US2084576A - Cutting machine - Google Patents

Description

.kane/22, 1937. J. L .,DRAKE ET AL CUTTING MACHINE 8 sheen-snee@ 1 Filed July 3, 1935 www www A mmm wmf Gttorneg zJun 22, 1937.

J. L. DRAKE AL CUTTING MACHI NE Filed July 3, 1935 8 Sheets-Sheet 2 June 22, 1937. J. L DRAKE ET A1.

CUTTING MACHINE Filed July s, 19:55

8 Sheets-Sheet 3 :Snventor zz... ..5 Il

lll/ll//ll/lll Vue (lttorneg Jupe 22, 1937.I J. L BRAKE ET AL 2,084,575.

CUTTING maxim:

Filed July 3, 1955 8 Sheetsf-Sheet 4 y :inventors ttorneg June 22, 1937 J. L. DRAKE ET AL v 2,084,576

` CUTTING MACHINE Filed July 5, 1935 8 Sheets-Sheet 5 Bu l l June 22;--` 1937. J. L DRAKE ET AL. 2,084,576

` CUTTING MACHINE Filed July 5, 1935 8 Sheets-Sheet 6 ZIO @bf/N. L. 0mm. 50W/N fi. ,P06/N.

June 22, 1937. J. L. DRAKE ET A1. 2,084,576

CUTTING MACHINE Filed July 3, 1935 8 Sheets-Sheet 7 June 22, 1931. J; L. BRAKE ET AL 2,084,516

CUTTING MACHINE lhwentor E :1 :21- 1Q- dof/N ..DFAK/E..

.BB f- Gttorneg Patented June 22, 1937 UNITED STATES PATENT OFFICE CUTTING MACHINE Application July 3, 1935, Serial No. 29,635

17 Claims.

The present invention relates broadly to cutting machines and more particularly to a machine de-v signed primarily for the .cutting of glass sheets but which may also be adapted to the cutting of other sheet material.`

The primary object of this invention is the provision of a machine of novel and improved design for cutting a relatively large sheet of glass into a plurality of smaller rectangular plates or k sections rapidly and accurately and in a highly practical and elcient manner.

Another important object of the invention is the provision of a machine of the above character operable to effect the scoring of a sheet of l5 glass along a plurality of lines extending at right angles (relative to one another without turning the sheet or in any way disturbing the position thereof after it has once been set for cutting.

Another important object of the invention is the provision of a machine of the above character embodying two sets of cutting tools arranged at right angles relative to one another and movable successively across the glass sheet through intersecting paths to score the same along a plurality of lines both transversely and longitudinally thereof whereby the time required for cutting up a sheet of glass into a plurality of sections is materially reduced and the effort on the part of the operator correspondingly lessened.

Another object of the invention is the provision of an improved form of cutting mechanism wherein the cutter heads are of compact, rigid form and, further, wherein the cutting tools are capable of a plurality of individual and independent adjustments which provide for any desired accurate setting thereof to the end that the glass sheet can be cut in both directions to an exact dimension.

A further object of the invention is the provision of cutting mechanism which will automatically adjust itself to glass sheets of different thicknesses without previous manual manipulation and also embodying means for yieldably maintaining the cutting tools in engagement with the glass sheet to automatically compensate for any inequalities in the `surface thereof. A

A still further object of the invention is the provision of cutting mechanism embodying novel means for lifting the cutting tools up over the forward edge of the glass sheet at the beginning 0 of the cutting operation and placing them upon the upper surface of said sheet slightly inwardly of said edge whereby to prevent the tools from striking against the ledge of the sheet and chippin'g the same or being injured thereby.

Other objects and advantages of the invention will become more apparent during the course of the following description when taken in connection with the accompanying drawings.

In the drawings wherein like numerals are employed to designate like parts throughout the 5, same,

Fig. 1 is a plan view of a cutting machine constructed in accordance with the present invention,

Fig. 2 is an end view thereof, lo

Fig. 3 is a view, partially in elevation and partially in section, taken substantially on line 3-3 of Fig. 1,

Fig. 4 is a longitudinal sectional view through one of the cutter carriages taken substantially ori 15 line 4 4 of Fig. 1,

Fig. 5 is a plan View, partially in section, of one of the guide rollers for the cutter carriages,

Fig. 6 is a sectional View taken substantially on line 6 6 of Fig. 5, 20

Fig. 7 is a longitudinal vertical sectional view of one of the cutting units taken substantially on line 'I--l of Fig, 1,

Fig. 8 is a plan View, partially broken away. ci a portion of the cutting unit,

Fig. 9 is a perspective view of one of the cutter heads and its associated parts in disassembled position,

Figs. 10, 11, and 12 are detail sectional views taken respectively on lines Ill- HL |l-I|, and 30 i2--12 of Fig. 7, Fig. 13 is an end view of the cutting unit, partially in section,

Fig. 14 is a transverse sectional view of one of the oiling devices taken substantially on line 3:, ld-M of Fig. 1,

Fig. 15 is a sectionall view taken substantially on line i5-#I5 of Fig. 7,

Fig. 16 is a detail sectional view taken substantially on line lG-IB of Fig. 15, 40

Fig. 17 is a perspective view of the cutter guard member associated with each cutting unit, and

Figs. 18, 19 and 20 are views showing the different positions assumed by the guard member upon operation of the machine. 45

General 'machine assembly With reference now to the drawings and particularly to Figs. l, 2 and 3, the machine illusY trated therein includes generally a horizontal fit* supporting base A carrying the stationary rectangular table B upon which the glass sheet C to be cut is laid. Also mounted upon the base A are the two cutter carriages Dland E arranged at right angles relative to one another and each carrying a plurality of independently adjustable cutting units F.l The cutter carriage D extends longitudinally of the table and is mounted for movement transversely across the glass sheet whereupon the cutting units F carried thereby will effect the scoring of the said sheet along a plurality of parallel lines G. The cutter carriage E is arranged transversely of the table and after the carriage D has been moved over the sheet and returned'to its starting position, the said cutter carriage .E is moved longitudinally across the glass sheet whereupon the cutting units F carried thereby will effect the scoring of said sheet along a plurality of parallel lines H which intersect the lines G and extend at right angles relative thereto. Upon subsequent breaking of the glass sheet along the score lines G and H, the said sheet will be separated into a plurality of rectangular plates or sections I, the shape and size of which are dependent upon the positioning of the cutting units upon the cutter carriages. When not in use, the cutter carriages D and E are positioned outwardly beyond one side and end respectively of the table, as clearly shown in Fig. 1, so that neither carriage will in any way interfere with or obstruct the laying of the sheet upon the table; the movement of the other carriage across the glass sheet; or the breaking up of the sheet into the cut sizes.

The cutting machine comprises various novel and improved features of construction and arrangement which will now be described in detail and which cooperate to provide a machine which is highly efficient in its operation and with which it is possible for a relatively unskilled operator to cut sheets of glass rapidly and accurately to predetermined exact sizes.

Supporting structure and cutting table The supporting base A is substantially rectangular in plan and includes the longitudinally extending parallel side members 25 and 26 connected at opposite ends by the transverse end members 21 and 28. Supported upon the side members 25 and 26 are a plurality of spaced pedestals 29 and 30 (Fig. 2) upon which are mounted the longitudinally extending beams 3| and 32 respectively. upon the beams 3| and 32 are the spaced transverse beams 33 and 34 (Fig. 1) and the intermediate beams 35 adapted to carry the table B.

The table B, as shown in Fig. 7, is constructed of wooden planking 36 arranged on edge side by side in contacting relation and clamped together by a plurality of bolts 31 or other suitable fastening means. The upper edges of the wooden planks 36 are preferably covered with felt or the like 38 to prevent scratching of the glass sheet C. The table B 4rests freely upon the intermediate supporting beams 35 but is rigidly secured to the end beams 33 and 34 by screws 39 which pass upwardly through openings 40 formed in ears 4| on said beams. It is preferred that the openings 4i) be slightly larger than the screws 39 in order that a certain amount of relative horizontal movement can be had between the table and supporting beams upon loosening of the said screws to permit adjustment and proper positioning of the said table.

Carried by the longitudinally extending beams 3| and 32 are rails 42 and 43 respectively (Fig.

2) for supporting the cutter carriage E, while car.n ried by the transverse beams 33 and 34 are rails 44 and 45 respectively (Fig. 4) for supporting the cutter carriage D. Each of the said rails 42, 43,

Extending between and supported 44 and 45 may be secured to the respective beam by a plurality of machine screws or the like 46 (Fig. 4).

In order to facilitate the positioning of rails 44 and 45 at right angles with respect to rails 42 and 43, the transverse beams 33 and 34 carrying rails 44 and 45 are adjustably support-ed at their opposite ends uponthe longitudinally extending beams 3| and 32. As illustrated in Fig. 3, each beam 33 and 34 may be provided at each end with a horizontal foot 41 having openings 48 through which are loosely passed studs 49 threadedly received within the respective beam 3| or 32. The openings 48 for the studs 49 are slotted so that the opposite ends of the beams 33 and 34 may be adjusted horizontally independently of one another to not only bring the rails 44 and 45 in parallel alignment but also at right anglesto rails 3| and 32. This adjustment may be effected by set screws 59.

Longitudinal cutter carriage The cutter carriage D, which extends longitudinally of cutting table B, includes the two substantially Y-shaped vertical side members 5| and 52 arranged outwardly of the transverse beams 33 and 34 respectively and each carrying a pair of spaced rollers 53 and 54 (Fig. 2) which ride along upon the respective rail 44 or 45 and by means of which the said carriage is supported. The mounting for each roller 53 and 54 includes, as best shown in Fig. 4, a cylindrical housing 55 preferably formed integral-with the respective side member 5I or 52 andwithin which is received a bearing bracket 56 secured thereto by screws or the like 51, said bearing bracket being provided at its inner end with a recess 58 open at its lower end and within which the roller 53 or 54 is received.' The roller is mounted on a shaft 59 supported at one end in the bearing bracket 5S and at its opposite end in a plate 60 secured to said bracket by screws or the like 6|, said plate also serving to maintain the said roller in place.

Each side member 5| and 52 of the cutter carriage D is substantially Y-shaped to provide the spaced upwardly diverging arms 62 and 63, the arms 62 ofv opposed side members being rigidly connected together at their upper ends by a tubular member 64 while the arms 63 are also rigidly connected together by a tubular member 65 (Fig. 4). Secured within the opposite ends Vof the tubular member 65 are the stub end members 66 and 61 reduced in diameter as at 68 and 69 and clamped firmly against rotation in hubs 10 and 1| respectively formed at the upper ends of the said arms 63. Surrounding the tubular member 65 is a sleeve 12 rotatably supported at opposite ends in the ball bearing assemblies 13 and 14 arranged within collars 15 and 16 respectively secured to the said sleeve by screws 11 and 18. With this construction, it will be readily apparent ,that the sleeve 12 is rotatable relative to the rigid tubular connecting member 65.

The cutting units F carried by the cutter carriage D are mounted upon the sleeve 12, and upon turning of the said sleeve, the cutting tools are adapted to be moved simultaneously into and out of cutting position as will be more fully hereinafter described.

The side members 5| and 52 of cutter carriage D are provided at their lower ends with inwardly directed extensions 19 and 80 respectively arranged beneathl the beams 33 and '34 (Fig. 4). Carried by the extensions 19 and 8l] are housings 8| and 82 respectively and extending between and ilrmly clamped within said housings is a horizontal tubular member 93 which serves to connect the said side members together. Extending through the tubular member 83 is a tubular shaft 83' provided with the stub ends 84 and 85, each being rotatably supported by bearings 86 arranged within a ring 81 which is fixed to the tubular member 83. Also encircling each stub end 84 and 85 is an oil seal 88 secured to the ring 81 by screws or the like 89.

Carried by the beam 33, outwardly thereof, is a longitudinally extending rack bar 90 secured to said beam by screws 9| and having formed upon its lower edge a series of rack teeth 92 with which mesh Ia pinion 93 keyed to the stub end 84 of tubular shaft 83'; Secured upon the underside of the beam 34 is a horizontal track plate 94 fastened to the beam by the screws 46 securing rail 45 and also by additional screws 95. Carried upon the underside of the track plate 94 adjacent the outer longitudinal edge thereof is a rack bar 96 secured to said pl-ate by screws 91 and'being provided upon its lower edge with teeth 98 with which mesh a pinion 99 keyed to the stub end 85 of the tubular shaft 83'. The pinions 93 and 99 meshing with the rack bars 90 and 96 serve to maintain the opposite ends of the cutter carriage A in alignment with one another.

Guide rollers for cutter carriage In order to prevent any side play or lateral vibratory movement of the cutter carriage D, the said carriage is provided at one side thereof with a pair of guide wheels or rollers |00 and IOI (Fig. 4), which are adapted to engage the opposite side edges of the horizontal track plate 94 carried by beam 34. The guide roller |00 is mounted in a housing |02 carried 'by the side I member 52 of the cutter carriage, while the roller |0| is mounted in a similar housing |03 carried by the extension of said side member. Inasmuch as the means for mounting the two guide rollers is exactly 'the same, a description of only one will be given. v

With reference particularly to Figs. 4, 5 and 6, it will be seen that each of the housings |02 and |03 is formed with a bracket plate |04 provided with three openings 05. within which are received screws |06 which serve to secure the housing to the cutter carriage. The cutter carriage is formed with bosses |01 within which the s aid screws |06 are threaded and each of these bosses is provided with a series of vertical serrations |08 with which mesh similar serrations |09 formed on the bracket plate |04. The openings I05 are horizontally elongated to permit adjustment of the housing and guide roller carried thereby toward and away from the track plate 94, the interengaging serrations |08 and |09 serving to maintain the housing in adjusted position.

Mounted within each housing |02 and |03 is a vertical shaft |I0 provided adjacent its upper end with an eccentric portion III upon which the respective roller |00 or |0| is mounted. The top of the housing is bridged over by a bearing plate ||2. Secured to the bottom of the housing, by a plurality of screws ||3, is a plate ||4 having a circular opening ||5 therein for receiving the shaft I|0 therethrough and being further y'provided with a series of radial horizontal ratchet teeth IIS arranged around said opening. Slidably keyed tothe shaft I|0 and received Within the opening I5 in plate I I4 is a sleeve |1 provided intermediate its ends with an annular ange |I8 carrying a series of ratchet teeth ||9 which are adapted to mesh with the teeth I I6 on plate |I4. Encircling the sleeve |I1 is a compression spring |20 bearing at its upper end against the annular flange ||8 of said sleeve and at its lower end against a nut |2| threaded upon the shaft I|0, said spring serving to normally urge the ratchet teeth II9 into engagement with teeth ||6.

As explained above, the guide rollers I 00 and |0| serve to prevent any side play or lateral vibratory movement of the cutter carriage D during the cutting operation. Furthermore, it is possible with the construction herein provided to take up any play which might result from wear on the guide rollers or track plate. Thus, when it is desired to take up `any side play occasioned by one reason or another, it is simply necessary for the operator to first loosen the nut |2| and rotate the shaft ||0. Due to the fact that the guide roller is mounted upon an eccentric portion |I the said roller can be moved toward and into proper relation with the plate 94. It will of course be understood that upon turningv of the shaft, the sleeve I|1 will turn therewith so that the teeth I|9 thereon will slip beneath teeth I I6 on the plate I I4 which remains stationary. After the desired take-up has been effected, the operator again tightens nut I2| to clamp the sleeve |I1 between the said nut and housing |02 whereupon any further rotation of the sleeve and shaft will be prevented. The shaft ||0 may be provided at its lower end with a wrench head |22 to facilitate the turning thereof. In mounting the guide rollers upon the carriage, the housings 02 and |03 are iirst moved asclose as possible to the track plate, and the screws |06 tightened, after which further and ner adjustment can be had by turning the shafts ||0.

Transverse cutter carriage The cutter carriage E, which extends trans- Y ranged outwardly of the longitudinally extending beams 3| and 32 respectively and each being provided with a pair of rollers |25 and |26 which ride along upon the respective rail 42 or 43 and by means of which the said carriage is supported. These rollers |25 and |26 may be mounted upon the carriage in the same manner as the rollers 53 and 54 of cutter carriage D.

Each of the side members |23 and |24 of cutter carriage E are provided with the upwardly diverging arms |21 and |28, the arms |21 of 0pposed side members being rmly connected together at their upper ends by a tubular member |29. Fastened to the upper end of each arm |28 is a support |30 and extending between and iirmly connecting the two supports of opposed side members is a tubular member |3I. It will be'noted that the side members of cutter carriage E project above the cutter carriage D s0 that upon movement of the said carriage E along rails 42 and 43, the tubular connecting members |29 and I3| thereof will pass over the carriage D.

Supported beneath the tubular connecting member |3I is a horizontal stationary supporting member |32 carried at one end by a sling |33 75 hung from the tubular rnei'nberv 13| and at its opposite end by the support |30 'f'iside member |24. Surrounding the supporting mrnber |32 and rotatably supported thereon is a sleeve |34 corresponding to sleeve 12 of cutter carriage D. The cutting units F carried by cutter carriage E are mounted upon the sleeve |34. It will be noted upon reference to Fig. 2 that the sleeve |34 is of such a length that it extends only over the cutting table B so that when the cutter carriage D is in inoperative position outwardly beyond the side of the table as shownY in Fig. 1, it will not interfere with the movement of carriage E.

The end members |23 and |24 of cutter carriage E also project downwardly beneath cutter carriage D vand are provided with the inwardly directed extensions |35 and |36 which are rigidly connected together by a tubular member |31 fixed at its opposite ends in housings |38 and |39 (Fig. l) carried bythe extensions |35 and |36. Extending through and rotatably mounted in the tubular member |31 is a tubular shaft |31 similar to the tubular shaft 83 of cutter carriage D. Carried by the beam 3| is a longitudinally extending track plate |40 (Fig. 2) to which is secured a rack bar |4| with which meshes a pinion |42 carried at the adjacent end of the tubular shaft |31', while cairied by beam 32 is a rack bar |43 with which meshes a pinion |44 carried at the opposite end of said shaft. This construction insures that the opposite ends of the cutter carriage will be maintained in alignment with one another at all times.

For the purpose of preventing side play or lateral vibratory movement of cutter carriage E, there are provided the two guide rollers |45 and |46 engaging the opposite side edges of the track plate |40, said guide rollers being mounted in the same manner as the guide rollers |00 and |0| of cutter carriage D. By adjustably mounting the supporting beam 34 as described above, the track plate 94 carried thereby can be accurately adjusted to right angles with respect to track plate |40, thereby insuring that the paths of the two carriages will be square or at right angles with each other and facilitating the square cutting of the glass sheet. 1

Cutting units As pointed out hereinabove, in the operation of the machine the vcutting units F of one cutter carriage are rst moved across the glass sheet to effect the scoring thereof along a plurality of parallel lines extending in one direction, after which the cutting units F of the other cutter carriage are moved across the sheet in a direction at substantially right angles to the direction of movement of the first cutters to effect 60.

scoring of the glass along a plurality of parallel lines extending at right angles to the first mentioned score lines and intersecting the same. All of the cutting units F are of the same construction and one of them has been illustrated in detail in Figs. 7 to 13 inclusive, and 15 to 20 inelusive.

Each cutting unit comprises a supporting bracket |41 secured to the respective sleeve 12 or |34 of cutter carriage D or E, said bracket be ing formed with a pair of spaced ribs |48 and |49 (Fig. 15), each rib being notched as at |50 and fitting over a longitudinally extending key |5i secured to the sleeve by screws |52. The bracket |41 is formed with bosses |53 engaging the sleeve at one side of the key |5|, while each of the ribs ter arms |46 and |49 is provided with a boss |54 engaging the sleeve at the opposite side of said strip. The bracket is clamped to the sleeve by a plate |55 resting upon the top of the bracket and also upon the sleeve and through which passes a screw |56 threadedly received within Said brackct. Upon tightening of this Screw, the bosses |53 and |54 will be brought into firm engagement with the sleeve, the key |5| serving to insure that all of the brackets on each sleeve will be arranged in substantial parallel alignment.

Received between the ribs |48 and |49 is a cutter lever |51 pivotally mounted intermediate its ends upon a horizontal threaded pin |58. As illustrated in Fig. 15, this pin passes loosely through the ribs |48 and |49 but threadedly engages the lever |51 so that upon rotation thereof the said lever can be adjusted longitudinally of the sleeve 12. The pin |58 is reduced in diameter at one end as at |59 and carries a head |60 by means of which said pin may be readily rotated. Carried by the rib |48 is a plate |6| having a notch |62 tting over the reduced end portion |59 of pin |58 and secured to the said rib by screws |63. This plate |6| serves to prevent longitudinal displacement of the pin |58 upon rotation thereof. The pin |58 may be vturned from either end by means of a screw driver or other instrument inserted within the slots |64.

The pin |58 is prevented from accidental turning by means of a plug |58 arranged in an opening |65 in the cutterl lever |51 and held in engagement with the said pin by a set screw |66 threaded in the outer end of said opening. However, when it is desired to turn the pin |58 to effect adjustment of the cutter lever |51 relative to bracket |41, it is simply necessary to loosen the screw |66 to release the pressure of plug |64 upon pin |58.

The cutter lever |51 is provided with an offset f oot |61 and supported upon the outer end thereof is a substantially rectangular cutter arm |63, said arm being provided in its under surface with a transverse recess or channel |69 within which the outer beveled end |10 of the foot is received. The cutter arm |68 is secured upon the foot between the clamping screws |1| and |12 which engage the upper and lower surfaces` respectively of said arm. The screw threaded through an car |13 while the screw |12 is carried by the offset foot |61. The cutter arm can be bodily removed by simply loosening the screw |1|.

The cutter arm |68 is also provided with an elongated opening |14 (Figs. '1 and 8) and received within this opening is a ratchet wheel |15 mounted upon a horizontal screw |16 carried by said arm, said wheel being keyed to said screw at .|11. The foot |61 is bifurcated at its outer end to provide a recess |18 within which the wheel |15 is partially received, so that while the wheel is free to rotate upon turning of the screw |16, it is held against any transverse movement. With this construction, it will be seen ,that the engagement of wheel |15 with recess |18 serves to positively locate the cutter arm 68. Each wheel |15 may be accurately adjusted liorizonialiy in its corresponding cutter arm |58 to the saine relative location before the cutter arm is assembled with the cutter lever |51. Thus is facilitated the interchangeability of cut- |68 without any further adjustment after their installation. In order to prevent accidcntal rotation of the screw |16, there is provided a spring plate |18 secured at one end to the arm |88 by a bolt |80, while the opposite nd thereof engages the teeth of ratchet wheel The cutter arm |88 is provided at its forward end and along one side edge thereof with a vertical flange I8| having an arcuate slotl |82 therein, and carried by said flange is the cutter head, designa-ted in its entirety by the numeral |83 and illustrated in detail in Figs. 9 to 13 inclusive. The cutter head |83 comprises a substantially rectangular block |84 formed along one side edge thereof with a downwardly projecting flange |85 which is adapted to be disposed inwardly of and against the flange |8| on arm |68 when the head is secured in position.

The block |84 is provided with an opening |86 extending substantially vertically therethrough and within which is arranged the cutter holder or ferrule |81 carrying at its lower end the cutting diamond |88. The upper end portion of the ferrule |81 is externally threaded as at |89 and received thereupon is a sleeve |90, the upper end portion of which is split to form a collet |9| said split p ortion being internally threaded and adapted to threadedly engage the threaded portion |89 of said ferrule. The split upper end portion 9| of ,sleeve |90 is also externally threaded as at |92 to receive thereon a nut |93, said sleeve being held in place by a plate |94 secured to the top of block |84 by screws |95. The sleeve |90 is further formed upon its outer surface with a worm wheel |96 which meshes with a worm |91 arranged within a transverse opening |98 in the block |84, said worm being provided at each end with a head |99 to prevent longitudinal movement thereof.

In mounting the cutter head |83 uponl the cutter arm |68, the said head is so positioned that the Aen flange |85 thereof is disposed inwardly of and against the flange 8| and is then secured thereto by screws 200 and 20| which pass through openings 202 and 203 in the flange |85 and are threaded withinv openings 204 and 205 formed in an arcuate plate 206 which is inserted in the arcuate'slot |82. It' will be noted that the plate 206 isrelatively shorter than the slot |82 so that the cutter head |83 can be swung through an arcuate path substantially concentric with the point of the diamond to vary the angle of inclination of the cutting edge of the diamond |88 relative to the glass sheet. When the dia- 'mond or the cutting edge thereon is new, it is possible to bring a relatively long portion of the cutting edge into engagement with the glass sheet. However, as the cutting edge becomes worn, the angle of inclination of the diamond must be changed to gradually shorten that portion of the cutting edge which engages the glass sheet. This adjustment may be accomplished in the manner above described.

When it is desired to adjust the ferrule vertically within the cutter head, the nut |93 is loosened and the said fcrrul-e rotated. Upon subsequent tightening of the nut |93, the ferrule will be firmly clamped in the collet |9| 0f sleeve |90. In order to rotate the cutting ferrule to bring the cutting edge of the diamond into proper position, the worm |91 is rotated to turn the worm wheel |90 and sleevey |90, and since this sleeve is in clamping engagement with the ferrule, the said icrrule will rotate therewith. After the cutter' head has been mounted in place and after all necessary adjustments have been made, the ferrule is made rigid with the head and arm by a clamp 201 engaging the ferrule beneath the block |84 and secured in place by the screw 20|.

, During the cutting operation, the cutting diamond |88 is yieldably maintained in engagement with the glass sheet by means of a tension spring 208 so that it is capable of a limited amount of free vertical movement to take care ofany irregularities or waves in the glass. The spring 208 is connected at one end to an offset extension 209 on cutter lever |51 and at its opposite end to a screw 2|0 which passes loosely and non-rotatably e through the bracket |41 and has a nut 2I| threaded upon its end. This spring normally tends to rock the lever |51 in a counter-clockwise direction upon-pin |58 to urge the cutting diamond downwardly and the tension of said spring can be regulated by proper adjustment of the nut 2| The rocking movement of the lever |51is limited by a set screw 2|2 passing therethrough and engaging the bracket |41, said screw being held in place and prevented from accidental rotation bya clamping screw 2 I3.

Cutter actuating means and general operation of machine Although the machine herein provided is not limited to any specific use, it has been especially designed for the cutting of photographic plates. These plates are usually of fractional dimensions and the requirements of the trade for plates of accurate and precise dimensions are rigid and exacting.

In the operation of the machine, the desired number of cutting units F are first secured upon the sleeves 12 and |34 of the cutter carriages D and E respectively, with the cutting diamonds being properly spaced from one another depending upon the size of plates to be cut. The glass sheet G is then laid upon the table B and while this is being done the two cutter carriages D and E will be in the positions shown in Fig. 1, the carriage D being to one side of the table and the cutter carriage E beyond one end thereof. One of the cutter carriages, for instance carriage D, is then drawn forwardly by the operator across the glass sheet C and immediately returned to starting position. During the forward movement of the carriage D, the cutting diamonds will be maintained in elevated or non-cutting position and will be automatically lowered into cutting position when the cutter carriage reaches the end of its forward movement, said cutters remaining in this position during the rearward cutting movement of the carriage and being automatically elevated to inoperative position after the cutting has been completed.

To automatically effect the movement of the cutters into and out of cutting position, there is provided at one end of the cutter carriage D a linkage mechanism including the two toggle links 2 I4 and 2 |5 pivotally connected at their adjacent ends by a pin 2|6. The link 2|4 is` also pivotally mounted intermediate its ends upon a horizontal pin 2|1 carried by the end member 5| of the cutter carriage and carried at the lower end of this. link is a freely rotatable roller 2|8. The link 2|5 is pivotally connected at its upper end as at 2|9 to a plate 220 secured by screws or the like to the collar arranged within sleeve 12 (Fig. 4), said,

plate having an opening therein and fitting about an oil seal 22|. The plate 220 actually serves as a lever fastened to the sleeve 12.

As pointed out above, the cutters are normally held in elevated or non-cutting position. Thus, the weight of the brackets |41 and the concom- 65 ward cutting movement of saidcarriage to. effect towet the glass sheets along the lines to be 65 itant parts of the cutting units to .theright of is not thought to be necessary. However, when the axis of-rotation of the sleeve 12, as viewed in the cutters are in raised or non-cutting position, Fig. .7, will be sufficient to normally rotate the the toggle links assume' the position L and when said sleeve ina clockwise direction, thereby caus- I the cutters are in lowered or cutting position, the

ing a downward thrust onthe link 215 (Fig. 2) said links assume the position M. Bumper means and causingthe toggle to be locked in the posisimilar to that provided for cutter carriage D is.

tion indicated ,at J whereupon the. cutters will be also provided for carriage E. maintained in`elevate'd position. Therotation of the sleeve 12 and consequently the upward movement of the cuttersis limited by the link 214 en.

Guard means for cutting tools 'Ihe cutting mechanism herein provided also the side member 51 of the cutter carriage. -How-LY-ftingzunit@for lifting the cutting diamond up over ever, when the carriage D reaches the end of its the forward edge of the glass sheet at the beforward movement across the table, the roller 218 ginning of theecutting operation to prevent the 15 is adapted'to engage a stop cam 222 carried by said diamond fromisvtriking against and chipping 15 cross beam 33, and upon continued forward or otherwise marring the edge 'of the sheet or movement of said carriage, the toggle links`2l4 being injured thereby. Such means comprises and 215 will be swung to the position indicated at a guard member 221i pivotally mounted upon the K, Causing the sleeve 12 to be rotated in l.a councutter arm |68 of each` cutting :unit at the forter-clockwise direction andI lowering the cutters ward end thereof, said guard member being 20 into cutting position. The distribution of weight adapted, as illustrated in Figs. 18, 19 and 20, to will likewise lock the toggle in the position indi-` engage the forward edgeiof `the sheet slightly in l cated at K and will maintain the cutters in Cutadvance of the cutting diamond and to lift the tins Position vupon rearward movement of the -saiddiamondpup over said edge and place it upon carriage. As the cutter carriage is then moved the upper Surface ofthe sheet slightly inwardly 25 rearwardly across the table/the cutting diamonds. n of the edge thereof, moving over and in engagement with the glass Each guardmember 228 is substantially U- sheet will effect the scoring thereof along the shaped and comprises a. body portion 229 from lines G. i Y Y which extend thespaced parallel ears 231| and After the cutting operation has been comp1et 23|, said body portion "and ears having formed 3o ed, the roller 28- iS adapted t0 engage a second integral therewith the outwardly projecting cam 223 also carried by beam 33 whereupon the shoulders 232 and 233.A Carried at the forward toggle links 214 and.215 will be again moyed'tol end of the flange 181 of cutter arm 168 is a position J, thereby causing the cutters to be autoy transverse block 234 secured in place by rivets 35 matically returned to noncutting position., 235 and having a depending leg 236. Positioned 35 From the above, it will be seen that the center` of between saidl leg and the flange 181 is the guard gravity of the assembled sleeve 12 and cutting member 228 pivotally mounted uponpins 231 urlitS F iS always tending to-lock the toggle. and 238 which pass through the ears 230 and In order .to eliminatelinsofar as possible lin-f 23|. `The guard member is free to swing in either 40 rIleCBSSalfy jai and Shock t0 the machine when .direction but its downward and inward move- 4,0 the carriage reaches the end of its forward and ment is limited by jthe shoulder 233 engaging rearward movements, suitable bumper means `flange 181, as shown in Fig. 13. may be provided. As here shown,.each of the After each lcutter carriage has been moved housings 8| and 82 carried by cutter carriage forwardlyacross the glass sheet, the cutting dia- Y D is provided with a boss -224 adapted to engagel monds lowered into cuttingl position, and the 45 a rubber pad 225 carried by beam 32 when the said carriage started backwardly, the guard memcarriage reaches the .end of its forwardmove-` bers are adapted to engage the forwardr edge of ment, while carried by beam 31',` adjacent each the glass sheet slightly in advance of thediaend thereof, is a bracket 226 with which engages monds (Fig. y18) and to lift the said diamondsup apad 225' carried by the carriage when the saidl over` the said edge, as indicated in Fig. 19, and 50 carriage reaches the end of its rearward movelay Vthem upon the upper surface of the sheet ment. slightly inwardly of each edge as in Fig. 20. 'In

After the cutter carriage D has been moved other words, the point of engagement of the guard transversely across the table to score the glass member with the glass sheet will provide acen- 55 along the lines G, the carriage E is moved longiter about which the pivot * pinsA 231 and 238 of 55A tudinally of the table in the same mannerto score the guard member will be swung, thus effecting the glass along the lines H. In other words, as the lifting of the cutting diamond as it passes the cuttercarriage E is drawn forwardly across over the edge of the sheet. During the cutting the table, the cutting tools carried thereby will stroke ofthe cutter carriages, the guard membe held in elevated or non-cutting position. How-` bers 22B lslide freely over theglass sheet. 60

ever, when the carriage reaches the end of its forward movement, the cutters are adapted' to be Glass sheet ailing vmeans automatically lowered into cutting position and To facilitate the cutting operation and better Y to be maintained` in such position during vrearthe action of the cutting diamonds, it is desirable the scoring of vthe glass.l When the carriage traveled by the cutting tools with some suitableI reaches the end of its cutting movement, the cut-yy uid suchas kerosene oil, turpentine, etc. For ters are adapted .to be automatically returned to this purpose thereY are provided twO @lling d@- nonacutting position. To this end, similar linkvices, one for each group of cutters, the oiling age means, designated in its entirety bythe device'for' the'cuttersof carriage D being desig- 70 numeral 221 and shown in Fig. 3, may be pronated 239 kand extendinglongitudinally of the vided for effecting the movement of the cutters tabl-e, while the oilingdevice for the cutters of into and out of cutting position. Since this linkcarriage E is designated 240 and is arranged agemeans is the same as described above for transversely of said table. Each olli/ng device cutter carriage D, a detailed description thereof COmprise's a horizontal channel member/24| i.Fig. 75

gaging one end wall of the slot 216' formed in embodies novel means associated with *eachV cut-.

14) providing; a. receptacle for the supply of kerosene oil or other fluid 242. Supported upon the opposite longitudinal edges of the channel ineml ber are plates 243 and 244 having their inner longitudinal edges turned downwardly as at 245 and 248 to provide spaced lips between which the substantially vertical wick 241 is clamped. In order to facilitate the securing of the plates 243 and 244 in position, .a plurality of blocks 248 may be fastened within the channel member and the said plates may be secured to these blocks by screws 249. The kerosene oil or other iiuid is supplied to the channel member through a fixture 250 closed at its outer end by a plug 25|.

The oiling device 239 for the cutter carriage D is carried upon a horizontal plate 252 (Fig. 2), being supported upon shims 253 and secured to the beams 33 and 34 by bolts 254, while vthe oil-V ing device 24|ly for cutter carriage E is carried upon a horizontalplate 255 (Fig. 3) mounted upon an eye beam 256 carried by a plate 251 supported upon shims 258 and secured to the beams 3l and 32 by bolts 259.

Carried upon the .underside of the cutter arm |63 of each cutting unit F is a wiper 260 of felt or the like secured to a spring plate 26| carried by bolt |30. .When the cutter carriages D and E are maintained in non-cutting position, as shown in Fig. l, the Wipers 260 are adapted to rest upon the wick 241 of the respective oiling devices (Figs. 2 and 3). As the carriages are then moved successively acrossthe glass sheet, the wipers will beY `drawn across and in contact with the sheet in advance of the cutting diamond to effect the desired wetting of theV glass along the lines traveled by the said diamonds.

It is to be understood that the form of the invention herewith shown and described is to be taken as the preferred embodiment of the same,

and that various changes in the shape, sizeand arrangement of parts may be resorted to without departing from the spiritrof the invention or the scope `of the subjoined claims.

- 'We claim:A Y

1. In sheet cutting apparatus of the character described, a stationary table for supporting the sheet to be cut, apair of cutter carriages movable successively across the table through intersecting paths, a group of cutting elements` carried by each carriage, means for maintaining the cutting elements of 4each group in non-cutting 'Y position during movement of the respective carriage in one direction, and meansfor maintain- Y ing said cutting elements in cutting position during movement'of Isaid-carriage in the oppositey direction. f

2. In sheet cutting apparatus of the character describedr a stationary table for supporting the fsheetstobe cut,apair of cutter carriages movable successively acrossithe table through intersecting paths, a group of cutting. elements carried by each carriage, means for maintaining the cutting elements of eachMgr-oupain,,non-Cutting position during non-cutting movement .of the respectivrriage, means for moving saidcutting elements into cutting position when the carriage approachesvthebeginning of its cutting movement, means for maintaining the said cutting elements in such position during cutting movement of said carriage, and means for causing said cutting elements to return to non-cutting position after the completion of the cutting movement.

sheet to be cut, a pair of cutter carriages movable successively across the table through'intersecting paths, a group of cutting elements carried by each carriage, moans for,utilizing the force of gravity for maintaining the .cutting elements of each group in non-cutting position during forward movement of the respective carriage, means actuated by said carriage for moving said cutting elements into cutting position when the carriage reaches the end of its forward movement, means for locking the said cutting elements in such position during rearward movement of said carriage, and means actuated by the carriage at the completion of the cutting movement for releasing said locking means and causing said cutting elements to return to non-cutting position.

4. In sheet cutting apparatus of the character described, a stationary table for supporting` the sheet to be cut, a pair of cutter carriages movable successively across the table through intersecting paths, a movable supporting member carriedby each carriage, a plurality of cutting units controlled by each movable supporting member and each unit including a cutting element, said cut-Aw ting elements acting to score the sheet along a plurality of lines extending at right angles relative Ato one another upon movement of the carriages, means actuated by movement of either carriage in one direction for causing the respec-l tive supporting member to bring its corresponding cutting elements into cutting position,'and means actuated by movement of the carriages in the opposite directions for causing said supporting member to bring the cutting elements into non-cutting position.

. ,5.HIn sheet cutting apparatus of the character ber and each unit including a cutting element, Tsaid' v'ciittingf'e'lements" acting'f to s'ore the sheet along a plurality of lines extending at right angles relativeI to one another upon movement ofthe carriages, the cutting elementsv being maini tained in non-cutting position by the force of gravity during non-cutting movement of the respective carriage, r'iie'aris for rotating said supporting member to bring the cutting elements carried therebynto-.cutting position when said carriage approaches the beginningaofits..cutting movement, means for maintaining the said cuttingnelgements in such position during cutting movement of the carriage, and means actuated by the movement of the carriage after the completion of the cutting operation for Arotating saidv supporting member to return the cutting elements tol non-cutting position.-

6. In-sheet cutting apparatus of the character deseribed,ra table for supporting the sheet to be `cut. a cutter support mounted abovel the table,

means forY effecting relative movement between saidrtable andn cutter support, a cutting unit carried'by said support and including axcutting tool normally disposed when in operative position at.

a point beneath the upper surface of the sheet to be cut, and means for liftingthe said tool up over the forward edge of the sheet and placing it upon the upper surface of said sheet inwardly of said edge at the beginning of the cutting operation and upon relative movement between the table and cutter support. Y

'7. In sheet cutting apparatus of the character described, a table for supporting the sheet to be out, a'cutter support mounted above the table, means for effecting relative movement between said table and cutter support, a cutting unit carriled''by said support and including a cutting tool normally' disposed when in operative position at va point beneath the upper surface of the sheet to b e cut, and pivotally mounted means for lifting the said tool up over the forward edge of the sheet'and placing it upon the upper surface of said Vsheet inwardly of said edge at the beginning of the cutting operation and upon relative movementlbetween the table and cutt-er support. -8. I^n sheet cutting apparatus of the character described, a table for supporting the sheet to be cut, a cutter support mounted above the table, means for effecting relative movement between said table and cutter support, a cutting unit carriedby said support and including a cutting tool normally dispos-ed when in operative position at a point beneath the upper surface of the sheet' to be cut, and means pivotally carried by the cutting `unit and adapted to engage the forward edge bf. the sheet and to lift the said tool up over saidedge and place it upon the upper surface of the sheet at the beginning of the cutting operatiom-a-'nd upon relative movement between the tabljeland cutter support.

9. In sheet cutting apparatus of the character 30 described, a table for supporting the sheet to be cut, a cutter support mounted above the table, means. for effecting relative movement between said table and cutter support, a cutting unit carriedb'y said support and including a cutting tool '35 Inormallydisposed when in operative position at afpoint beneath the upper surface of the sheet to be cptand a guard member pivotally carried by utting unit to swing on a horizontal axis n dapted to engage-the forward edge of the sheet and to lift the said tool up over said edge and place it upon the. upper surface of the sheet at thev beginning of the cutting operation and upofnlrelative movement between the table and cutter support, the point of engagement of the d member with the sheet providing a center I hich the horizontal axis of the said guard m r will be swung during the lifting of the cutting tool.

1'0. In sheet cutting apparatus of the character described, a table for supporting the sheet to be ,.cut, acutter support mounted above` the table,

l'means for effecting relative movement between `said"-table and cutter support, a cutting unit carried by said support and including a cutting toolVV normally disposed when in operative position l`at a point beneath the upper surface of the sheetT to be cut, a guard member pivotally carried by the cutting unit to swingA on a horizontal axis and adapted to engage the forward edge 60 of they sheet and to lift the said tool up over said edge and place it upon the upper surface of the sheet at the beginning of the cutting operation and 'upon relative movement between the table and cutter support, said guard member being free `to swing in either direction, and means for Y limiting the downward and inward movement of the guard member.

11. In sheet cutting apparatus of the character described, a table for supporting the sheet to be cut., a cutter support mounted above the table, means for effecting relative movement between saidftable and cutter support, a cutting unit carriedlby said support and including a bracket me ber, a cutter lever pivotally mounted upon racket member, a cutter arm carried by said lever, a cutter head carried by said arm and provided with a cutting element, means for adjusting said cutter arm transversely of said cutter lever including a horizontal screw carried by the cutter arm, a ratchet wheel keyed to said screw and received Within a recess in the cutter lever whereby the ratchet wheel, while iree to rotate upon turning of the screw, is held against transverse movement, means engaging the ratchet wheel for preventing accidental rotation of said screw, and means for normally urging the said lever about its pivot to maintain the cutting element in yieldable engagement with the sheet.

, 12. In sheet cutting apparatus of the character described, 4a table for supporting the sheet to be cut, a cutter support mounted above the table, means for effecting relative movement between said table and cutter support, a cutting unit carried by said support and including a bracket member, a cutter lever pivotally mounted upon said bracket member, a cutter arm carried by said lever, a cutter head carried by said arm, and provided with an opening extending'substantially vertically therethrough, a. ferrule rotatable within said opening and carrying a cutting diamond at its lower end, the upper end portion of the ferrule being externally threaded, a sleeve received upon said ferrule and having its upper end split to form a collet, said split portion being internally threaded and adapted to engage the threaded portion of said ferrule, and a. nut threaded upon the split upper end of said sleeve and adapted, upon being tightened, to firmly clamp the ferrule against rotation in said collet.

13. In sheet cutting apparatus of the character described, a table for supporting `the sheet to be cut, a cutter support mounted above the table, means for effecting relative movement between said table and cutter support, a cutting unit carried by said support and including a bracket member, a cutter lever pivotally mounted upon said bracket member,' a cutter arm carried by said lever, a cutter head carried by said arm and provided with an opening extending substantially vertically therethrough, a ferrule rotatable Within said opening and carrying a cutting diamond at its lower end, a sleeve received upon said ferrule, means for securing said ferrule and sleeve together, a worm wheel carried by said sleeve, and a worm carried by the cutter head and meshing with said worm wheel, said worm being held against longitudinal movement and, upon rotation, being adapted to rotate the sleeve and ferrule to bring the cutting edge of the diamond into proper cutting position.

14. In sheet glass cutting apparatus of the character described, a substantially rectangular stationary table for supporting the sheet to be cut, a pair of spaced parallel rails extending longitudinally of the table, a wheeled cutter carriage mounted for movement along said rails, a

stationary table for supporting the sheet to be,

cut, a pair of spaced parallel rails extending longitudinally of the table, a carriage mounted for movement along said rails, a pair of spaced parallel rails arranged transversely of said table. a second cutter carriage mounted for movement along saidlast-named rails, each cutter carriage including a pair of vertical side members, supporting rollers carried by said side members and riding along upon the respective railsa supporting member extending between and connecting said side members, and a pluralityr of glass scoring tools carried by each supporting member for scoring the sheet along a plurality l ing rollers carried by said side members and rid.-

ing along upon the respective rails, a supporting member extending between and connecting said side members, av plurality of cutting elements carried by each supporting member for scoring the sheet along a plurality of lines extending at right angles relative to one another upon successive movement of the cutter carriages along their respective rails,'pairs of horizontal beams for supporting said rails, a rail plate carried by one beam of each pair, a pair of' guide wheels carried by each cutter carriage and engaging the opposite side edges o! the corresponding rail plate, and an eccentric mounting for each guide wheel whereby the said wheel may be moved toward the rail plate to take up wear and prevent lateral vibratory movement of the cutter carriage.

17. In sheet cutting apparatus of the character described, a substantially rectangular stationary table for supporting the sheet to be cut, a pair of spaced parallel rails extending longitudinally of the table, a carriage mounted for movement along said rails, a pair of spaced parallel rails arranged transversely of said table, asecond cutter carriage mounted for movement along said last-named rails, each cutter carriage including a pair of vertical side members, supporting rollers carried by said side members and riding along upon the respective rails, a supporting member extending between and connecting said side members, a plurality of cutting elements 1carried by each supporting member for scoring the sheet along a plurality of lines extending at right angles relative to one another upon successive movement of the cutter carriages along their respective rails, pairs of horizontal beams for supporting said rails, the side members of each cutter carriage projecting below the table, bearings carried by said side members beneath the table, a horizontal shaft extending between said side members and rotatably supported in said bearings, pinions carried by said shaft, and rack bars carried by said beams and with which the said pinions mesh.

JOHN L. DRAKE. EDWIN A. ROSIN.

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