US606375A - chandler - Google Patents

Description

(No Model.) 4 SheetsSheet 1.

-D.L.UHANDLER., COUNTER CUTTING MAUHINE.

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4 Sheetsr-Sheet 2.

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D. L. CHANDLER. COUNTER CUTTING MACHINE.

N0. 606,375. Patented June 28, 1 898.

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' llnirnn STAT-Es PATENT DANIEL L. CHANDLER, OF AYER, MASSACHUSETTS, ASSIGNOR TO {THE SPAULDING BROTHERS COMPANY, OF TOVNSEND HARBOR, MASSA- cnUsETT's.

COUNTER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 606,375,-dated June 28, 1898."

Application filed Zl'unel9i189fi. Renewed June 23,1897. Serial No. 642.729. (NomodeL) is a specification.

Myinvention relates to counter-cuttingmachines and is an improvement upon the machine described in Letters Patent No. 540,7 7 9, granted to myself and George J. Burns June 11, 1895; audit consists in certain novel features of construction,arrangement, and combination of parts, which will be readily understood by reference to the description of the accompanying drawings and to the claims hereto appended and in which myinvention is clearly pointed out. v v v Figure 1 of the drawings is a front elevation of a counter-cutting machine embodying my invention. Fig. 2 is an end elevation of the same. Fig. 3 is a sectional plan, the cutting-plane being on line 2 2 on Figs. 1 and 2. Fig. 4c is a plan of so much of said machine as is above said line 2 2. Fig. 5 is a vertical section of the feeding mechanism on line 3 3 on Figs. 1 and 4, with the grip-jaw closed on the feed-slide. Fig. 6 is a front elevation of the female clamping dies or molds and their supporting-plates with the notching-punches attached.

Figs. (3 and 7. Fig. 9 is a rear elevation of one of the clamping-plates with the blankdischarging bar and gages attached. Fig. 10 is a section on line 5 5 on Fig. 9 andthrough a portion of the knife-carriage with the knife removed. Fig. 11 is a rear elevation of the feed-pawl with spring attached. Fig. 12 is a side elevation of thesame.

Figs. 1, 2, 3, 4, and 5, and Figs. 1L and 12 are drawn to a scale three times that of Figs. 1,

2, 3, 4, and 5. Figs. 13 and 1a. are respectively Fig. 7 is an edge view of the same. Fig. 8 is a section of the same 011 line 4 4: on.

Figs. 6, 7, 8,9, and 10 are drawn to a scale double that of ton-like frame comprising upperand lower horizontal bars a a, two vertical end bars a a and a central vertical [-shaped bar A, supported upon the front and rear frames '13 and B, respectively, which frames are connected together by tie-girths B one at each end.

0 is the driving-shaft, mounted. in a bearing in the stand C, secured to the frame 13, said shaft having secured upon its outer end the driving-pulley O and upon its inner end the bevel-pinion C the teeth of which engage with and impart motion to the bevel. gearwheel C mounted upon the rear. end of the shaft D, which is mounted in bearings B and B formed upon the frames B and B, respectively, and having secured upon its front end the cran k-disk D and between the bearings B and B the cams D and D as shown.

The horizontal barso and er of the frame A are made somewhat wider than the vertical bars of said frame and are provided respectively, with a longitudinal guide-rib a and a upon which is mounted so as to be movable endwise of said frame A the knife-carriage E, to one end of which is pivoted one end of the link E,the opposite end of whichis pivoted to the upper end of the lever E fulcrumed at c to the frame 13, the lower end of which lever is, connected by the rod E to the crank-pin d, set in the disk D, as shown.

F is a plate secured to the front face of the central bar ofthe frame A by suitable screws, and having secured to its front face the female dies or molds F F and the plate F between the curved edges of which molds and plate are secured the fixed cutters e: c, as shown in Fig. 8.

G and G are two plates pivoted on centers f f totheframe A at their outer ends and having secured totheir inner ends the steel plates 9 respectively, a portion of each of which has acurved outline corresponding in shape and size to the curved outline of one of the molds F and beveled on its inner face around said curved portion to a, thin knifeedge, so that it may be presse d into its mold till its outer face is in the same plane as the outer edge of the fixed cutter e.

The outer face of each of the plates G and G has secured thereon two steel cam-bars h 72, one at its upper edge and one at its lower edge, against which steel blocks or shoes h h, secured to the carriage E, act to move the free end of said plate G or G inward to cause the steel plate 9 or g to clamp a portion of a strip of leather-board between it and the mold F preparatory to severing a counterblank from said strip and imparting to said blank the desired curved and skived edge, said clamping-plates being moved in the opposite direction by the springs G G H H are two skiving-knives adj ustably secured to the carriage E by means of the clam ping-bolts & and set-screws t".

The construction, arrangement, and operation of the mechanism for clamping and ski'ving the blank are substantially the same as described in the before-cited Letters Patent, except that in said prior patent the cutting edges of the skiving-knives were in a horizontal plane, while in my present invention the edges of said knives are arranged in a vertical or nearly vertical plane.

The plate F has clamped to each edge thereof the stationary male cutting-die or punchj by means of the clamping-bar j and the screws 3' the front end of said punch cooperating with a female die j set in the plate g or 9, when said plate is pressed into the mold F to clamp the blank, and thereby cuts a notch in the center of the straight edge of the blank. A" plate or block it is fitted to partially surround said punch j,and is mounted upon a stem 75, fitted to a bearing in the plate F, and provided with a shoulder k to limit its forward motion, in which direction it is pressed by the spiral spring k for the purpose of insuring the releasing of the blank from said punch when the clamping-plate G g or G g is retracted by the tension of the spring G at the proper timein the movement of the knife-carriage E.

The inner or rear face of each of the plates G and G has secured thereto two rearwardlyprojecting gage-plates f 2 to serve the purpose of accurately locating the strip of material relative to the molds F, and said plates also have mounted in suitable bearings g g on their rear faces the blank-discharging bars 9 y the inner end of each of which is forked and has the extreme end portion of each prong of said fork turned at right angles. thereto and projecting a short distance toward the front, as shown in Figs. 3, 9, and 10. Each of said forked bars is moved toward the end of the frame A by the spring g until movement in that direction is arrested by the stopshoulder 9 coming in contact with one of the bearings 9 and said forked bars are moved in the opposite direction, or toward the center of them achine, to discharge the blank, by the action thereon of the upper end of the lever Z, pivoted to the end vertical bar of the frame A and provided at its lower end with the laterally-projecting lug or stud Z,with which the carriage E comes in contact near the end of its movement toward the end of the frame A.

The upper horizontal bar a of the frame A has formed upon its upper surface the dovetailed slide a upon which is fitted so as to be movable endwise thereon the carriage or feedslide carrier 1, provided with cars at m and the boss m and having bolted toits upper surface the stand J, having the vertical guidearm J, as shown in Figs. 2, 4, and 5.

The feed-carrier I and stand J J are moved horizontally in the direction of the length of the frame A, alternately in opposite directions, with a standstill at either end of its movement, by the action of the cam D upon the trucks n n, mounted on studs set in the bar or plate K, mounted in bearings K K, so as to be movable endwise therein, said bar having pivoted thereto one end of the link K the opposite end of which is pivoted to the lower end of the lever L, fulcrumed at n to the frame B or to a stand secured to some fixed part of the frame of the machine and having adjustably pivoted to its upper arm one end of the link L, the opposite end of which is pivoted to the ears on m on the feedcarrier I.

By adjusting the outer end of the link L on the slotted upper arm of the lever L to a greater or less distance from the fulcrum n the feed-carrier I will be moved a greater or less distance along the dovetailed slide a ,according as a small or large counter-blank is being out.

7 It should be understood that the narrower the blank to be cut is the greater should be the horizontal movement of the feed-carrier I, and vice versa.

The arm J of the stand J has fitted thereto so as to be movable vertically thereon the strip-feeding device or slide M, to which is pivoted at o the forked elbow-lever N, provided with pendent arms 0 and the upwardlyprojecting arms 0 each provided with an adjustable stop or abutment 0 the upper of said stops 0 being arranged to abut against the movable ends of the leaf-springs p, as shown in Figs. 1, 4, and 5. The feed-slide M also has pivoted thereto, within the guideway thereof, the grip-jaw O, the upper end of which is connected by the links (1 q to the end of the short arm of the elbow-lever N in such a manner that when the lower stop-screws 0 abut against the rear of the feed-slide'the lower end of the grip-jaw 0 will press against the back wall of the guideway of said feedslide or against a strip of material inserted therein, and when the long arm of the elbowlever N is raised, so as to compress the spring 19 and remove the lower stop-screws o from contact with said feed-slide, the lower end of said grip-jaw will be moved outward or from contact with the strip of material or the feedslide.

P is a plate or bar secured to a block 4", pivoted to ears 4" 1", formed upon or secured to ICC a rearwardly-projecting stop-finger r at a point a short distance below the lower ends of the feed-slide M and the grip-jaw O, as shown in Fig. 5.

Q is a vertically-movable bar having a laterally-projecting arm Q at its upper end, in which is formed a horizontal slot 3, through which the end of the long arm of the elbowlever N projects, as shown in Figs. 2, 4, and 5.

The bar Q, is mounted in a verticalguideway formed in the stand Q secured to the rear side of the frame A, and rests at its lower end upon and near the free end of the lever R, pivoted at t to the stand R, fitted to and adjustable in an inclined guideway formed in the pendentbracket R formed in one piece withor secured to the frame A, said stand B being clamped in the desired adjusted position by the clamping-bolt t and nut 25 whereby the vertical movement of the bar Q and the feed-slide and grip-jaw may be increased or diminished, according to the desired length of counter-blank to be out.

The under side of the lever B rests upon and is moved about its fulcrum to raise the bar Q, by the cam D and is moved in the opposite direction by gravity, assisted by the tension of the spring S. (See Fig. 2.)

The frame A has secured to its upper side two stands Tone between each end of said frame A and the dovetailed slide a and each has set in its inner end an adjustable stopscrew u to limit the movement of the feedcarrier I in either direction.

U is an air-cylinder bolted to the upper surfaceof the frame A near its right-hand end and provided with the piston U, secured to one end of the rod V, the opposite end of which is secured to the feed-carrier I, so as to be movable therewith, said cylinder being provided near each end with a vent-hole o, only one of which is shown, all so constructed as to serve as a daslrpot or air-cushion to arrest the movement of the feed-carrier I without a shock.

The operation of my invention is as follows: The several parts of the machine beingin the positions shown in Figs. 1 and 2, if power is applied to the pulley C the shafts O and D and the carriage E will move in the directions indicated by the arrows on Figs. 1 and 2. When the carriage E has reached the limit of its movement toward the right of Fig. 1, the feed-slide M will have reached the limit of its upward movement, and the grip-jaw O is retracted from contact with said feed-slide, in which relative position said grip-jawremains until the bar Q begins to descend. During "this time the clamping-platehg is pressed into its mold and the plate 9 is retracted from its mold, as shown in Fig. 3. WVhile the feed-slide M is being moved up ward or before it begins to descend again,

the operator inserts a skived strip of material, as. shown in Figs. 13 and 14, endwise between the feed-slide M and the grip-jaw 0, until its end rests on the.rearwardly-projecting finger r of the plate P. A continuation of the rotation of the shaft D causes the feedcarrier I to be moved toward the rightof Figs. 1 and 4, and at'the same time the lever It and the bar Q are moved downward by the force of gravity, assisted by the spring S, thereby causing the grip-jaw O to be pressed hard against the strip of material and clamp itbetween it and the feed-slide M, and then causing said feedslide, grip-jaw, and strip of material to be moved downward until the lower end of said strip of material is between the upper portions of the right-hand mold F and the plate g, the carriage E in the meantime being moved toward the left of Figs. 1 and 3, and just as the right-hand movement of the feed-carrier I and the downward movement of the feed-slide M are completed the shoes h it come into engagement with the throw h of the cam-bars hand cause the clampingplate g to clamp the end of said strip of material between it and the mold F. A further rotation 'of the shaft D will cause the bar Q Q to move upward by the action of the cam D upon the lever B, the first effect of which is to move the long arm of the lever N upward about its pivotal connection to the feed-slide M, thereby moving the grip-jaw 0 about its fulcrum, so as to move its lower end and the lower end of the gage plate P outward or away from contact with the strip of material, while the spring w, attached to the inner side of said j aw,con'tin nes to lightly press against said material. When the stop-screws o in the arms 0 of the lever N have pressed the free ends of the springs p into contact with the feed-slide M, the continued upward movement of the bar Q Q will cause a corresponding upward movement of the feed-slide M, the grip-jaw O, and the gage-plate P, while said spring 20 presses lightly against the strip of material, the lower end of which is firmly held against any upward movement by being clamped between the clamping-plate gand it'smold F. During the upward movement of the feed-slide M the right-hand knife H moves to the 6X- treme of its movement toward the left of Fig. 1 and severs the portion of the strip of material that is clamped by the plate g. The

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carriage I is then-moved toward the left of carriage E the plate g is forced into contact with said strip of material and presses it into its mold I and clamps aportion of said strip of material therein of suffieient length to form a counter-blank, and then the knife II at the left severs said blank from the strip and skives its curved edge. These movements are repeated as long as the material is supplied to the guideway of the feed-slide, whetherbyhand or automatically, and at each forcing of the clamping-plate into its mold the punch j, cooperating with female'die 7' cuts a notch in the center of the straight edge of the blank, and as said clamping-plate is retracted the tension of the spring k forces the clearer-block 7c outward and pushes the blank off the punch, and at each end of the reciprocation of the carriage E said carriage strikes the stud Z of the lever Z and moves saidlev'er about its fulcrum and causes its upper end to move the blank-discharging bar toward the center of the machine to insure the blank falling from its mold.

While I have shown the molds F F with the faces of their rims in vertical planes and the cutting edges of the skiving-knives in the same vertical plane, it is evident that said parts maybe inclined to a vertical or arranged horizontally Without affecting the principles of myinvention, the direction of movement of the feed-slide being correspondingly changed. It will be seen that each skiving-knife simultaneously severs a blank from the strip and skives the blank, thus making an independent severing-knife unnecessary.

\Vhat I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a machine for cutting counter-blanks from strips of leather-board or other material, the combination of a fixed frame; a pair of molds having in their outer faces recesses the outlines of which correspond to the desired outlines to be given to the counter-blanks when completed, with the outer faces of their rims in the same plane and their rounded edges toward each other; a pair of clamps for pressing the strip of material into said molds, mounted upon and movable about suitablyarranged axes; a reciprocating carriage mounted upon said frame; a pair of skivingknives secured to said carriage and arranged with their cutting edges in the same plane as the faces of said molds and toward each other; means for operating said clamps to press the strip of material into the molds; means for reciprocating said carriage; a blank-discharging bar carried by each of said clamps; and means for operating one of said dischargingbars by the movement of the knife-carriage at the end of each movement thereof.

2. In a machine for cutting counter-blanks from strips of leather-board or other material, the combination of a fixed mold having in its outer face a recess the outline of which corresponds to the desired outline of the blank to be cut; a fixed punch or male die having its operating end in a plane parallel to and nearly coinciding with the plane of the rim of said mold; a yielding clearer plate or block partially surrounding said punch; a clamp for pressingthe strip of material into said mold, and mounted upon and movable about an axis parallel to the plane of the rim of said mold; a female die set in said clamp in position to cooperate with said punch to cut a notch in the straight edge of the blank; a reciprocatin g frame or carriage; a skiving-knife mounted upon said carriage with its cutting edge in the same plane as the rim of said die; means for operating said clamp to press the strip of material into said mold; means for reciprocating said carriage; a blank-discharging bar carried by said clamp; and a lever mounted upon a fixed fulcrum and constructed and arranged to be acted upon by said carriage at one extreme of its reciprocation, to move it about its fulcrum, and causeit to engage and impart motion to said discharge-bar.

3. In a machine for cutting counter-blanks, the combination of a fixed frame; a pair of molds mounted upon one of the sides of said frame and having formed in their outer faces recesses the outlines of which correspond to the outlines to be given to the completed blanks and having the outer faces of their rims in the same plane and the curved edges of said recesses toward each other; a pair of pivoted depressors or clamps to press the material into said molds; means for moving said clamps; a reciprocating carriage mounted upon said fixed frame; a pair of skivingknives mounted upon said carriage with their cutting edges toward each other and in the same plane as the rims of said molds; means for reciprocating said carriage and knives; a longitudinally and laterally movable feedslide; a grip-j aw pivoted to and movable with said feed slide; means for operating said grip-jaw to engage and grip the material and release the same; means for movfng said feedslide longitudinally; and means for moving said slide laterally.

l. The combination of the fixed molds F F; the pivoted clamps G g and G g; the carriage E; the knives H H secured to and movable with said carriage; the frame A supporting said carriage and provided with the guideway or slide a the feed-carrier I fitted to and movable horizontally on said slide, and earrying the stand J J; the grooved feed-slide M; the grip-jaw O pivoted to and movable with said feed-slide M; the elbow-lever N connected to said grip-jaw O by the link q; means for moving the carrier I and stand J J endwise of said frame A; the vertically-movable bar Q Q provided with the horizontal slot S; the lever B; and the cam D all constructed, arranged, and operating substantially as described.

5. The combination of the fixed frame A provided with the guideway (F; the feed-carrier I mounted upon said guideway and earrying the stand J J; the movable feed-slide M mounted on said stand J J; the grip-jaw O pivoted to said feed-slide M; means for operating said jaw O to grip the material and reciprocate said jaw and feed-slide; means" ment of said carriage in either direction.

(3. The combination of the fixed frame A provided with the slide a the feed-carrier I mounted thereon and carrying the stand J J; the horizontally-reciprocating bar K provided With the trucks at and n; the cam D constructed and arranged to act alternately upon said truck to intermittently move said bar in opposite directions; the lever L fulcrumed upon some fixed part of the machine; the link K connecting said reciprocating bar with the lower end of said lever L; and the rod L pivoted at one end to said carrier I and connected at its other end to the upper slotted arm of said lever L, as and for the purposes described.

7. The combination, in a counter-cutting -machine, of the fixed frame A provided with a slide a and the guide-ribs a and a the molds F F having recesses formed therein corresponding to the desired shape and size ranged axes; means for vibrating said clamps to alternately clamp a section of the material and to release the severed blank ;the carriage E mounted upon and movable endwise of said guide-ribs a and a the skiving-knives H II adj ustably secured to said carriage E; means for reciprocating said carriage; the feed-carrier I mounted upon the slide cf; the stand J J mounted upon said carriage; means for moving said carriage endWise on said slide; the feed-slide M movable up and down upon the guide-arm J of the stand J; the grip-jaw O pivoted to said slide M; the elbow-lever N pivoted to the slide M and provided with the arms 0 and 0 an adjustable stop-screw set in each of said arms 0 and 0 the springs 19 secured to the slide M, with their free ends between the stop-screws in the arms 0 and said slide; the links q connecting the short arm of said lever N to the upper end of the grip-jaw O; the upright bar Q provided with the lateral arm Q, having the horizontal'slot s to receive the long arm of the lever N; the lever B mounted upon an adjustable fulcrum; and the cam D, all constructed, arranged, and operating substantially as described.

8. In combination with the longitudinally and laterally movable feed-slide M and the grip-jaw O pivoted thereto, and means for op crating said grip-jaw; the plate P provided with the finger r and secured to the bar 7' pivoted to said feed-carriage, and the springs,

r as set forth.

9. In a machine of the character specified,

the combination of a pair of fixed molds, a pair of alternately-acting clamps for pressing blank material into said molds, mechanism for presenting one end of an elongated strip of material to the two molds and clamps alternately, and a pair of reciprocating skivping-knives movable over said molds and.

clamps, each knife acting to simultaneously sever a blank from the strip and to skive the blank.

10. In a machine of the character specified,

the combination of a pair of fixed molds, a pair of alternately-acting clamps for pressing blank material into said molds, a feeding device havinga longitudinal movement to cause it to move a strip of material forward step by step, and a lateral movement to present the strip to the tWo molds and clamps alternately, said feeding device including means for alternately gripping and releasing the strip, and a pair of,reciprocating skivingknives movable over said molds and clamps, each knife acting to simultaneously sever a blank from the strip and skive the blank.

11. In a machine of the character specified, the combination of a pair of fixed molds, a pair of alternately-acting clamps for pressing blank material into said molds, a longitudinally-reciprocating feeding device or slide having means foralternately gripping and releasing a strip of material, afeed-slide carrier reciprocated in a path substantially at right angles With the path of the feed-slide, and a pair of reciprecating skiving-knives movable over said molds and clamps, each knife acting to simultaneously sever a blank from the strip and skive the blank.

12. In a machine of the character specified, the combination of a mold, a clamp adapted to press blank material into said mold, a feeding device adapted to move an elongated strip of material step by step and present one end of it to the mold and clamp, and a skivingknife movable over said mold andclamp and adapted to simultaneously sever a blank from the strip and skive the blank.

In testimony whereof I have signed my name to this specification, in the presence of two subscribingwitnesses, this 25th day of May, A. D. 1896. l I g DANIEL L. CHANDLER.

Vitnesses:

CHARLES F. Wononsrnn, E. ALONZO Bnoon.

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