US2017103A - Machine for scoring metal containers or parts thereof - Google Patents

Description

Oct. 15, 1935. I. NEWMAN 2,017,103

MACHINE FOR SCORING METAL CONTAINERS OR PARTS THEREOF Filed y 2 9 4 Shets-Sheet 1 INVENTOR "BY m ATTORNEY Oct. 15, 1935. NEWMAN 2,017,103

MACHINE FOR SCORING METAL CONTAINERS OR PARTS THEREOF Filed May 1934 4 Sheets-Sheet 2 INVENTOR Afio NEY I. NEWMAN Oct. 15, 1935.

MACHINE FOR SCORING METAL CONTAINERS OR PARTS THEREOF Filed y 22, 1954 4 Sheets-Sheet 3 FIG. 6.

g INVENTQR w/MIEWQ ATTORNEY oct'. 15, 1935; I. NEWMAN 2,017,103

MACHINE FOR SCORING METAL CONTAINERS OR PARTS THEREOF Filed May 22, 1954 4 Sheets-Sheet 4 23.. J annl length of the score line.

Patented Oct. 15, 1935 HTED STATES TENT OFFICE MACHINE FOR SCORING METAL CON- TAINERS 0R PARTS THEREOF 12 Claims.

My present invention relates, to a machine for scoring metal members which may be containers, such as cans, or caps to be applied to cans, or other metal bodies which require scoring for the purpose of weakening the metal on definite lines. My invention also relates to a novel machine of simple and efiicient construction and operation which is adapted to carry out these operations.

It has heretofore been customary to score parts of metal containers or cans in order to weaken the metal along a certain line to permit the portion of metal included within the line to be broken away, partially or wholly, to form an opening for the discharge of the contents of the container. In some cases scoring has been provided around the outer portion of the entire cover of the can, whereas in some cases a cap of considerably less area than the top of the can has been applied at some position on one end wall of the can and the cap has been provided with a circular scoring so that the metal is reduced in thickness to permit the portion surrounded by the scoring to be broken away to permit the discharge of the contents of the can.

The scoring in such cases has heretofore been performed by pressing the sharp edge of a scoring die againstone face of the piece of metal while the latter is supported against a suitable platen or base die member from the opposite side and exerting sufiicient pressure with the scoring die to drive its cutting edge partially through the piece of metal in order to locally weaken it along the scoring line.

The difliculty of this operation has been that the metal at the scoring line was not universally reduced to the same thickness throughout the This was due partly to irregularities in the thickness of the metal; to the tendency of the metal to bend; and to the difiiculty of maintaining the whole of the sharp or cutting edge of the die perfectly in the same plane, as well as to irregularities of alignment of the die with the metal acted upon. While these variations in thickness. at different parts of the score line may amount to only thousandths of an inch, they are sufficient to interfere with the results which it is desired to obtain. If there are irregularities in the thickness of the metal at the different parts of the score line, the piece to be removed does not break away uniformly, cleanly and easily and different forces may be required to remove the piece from different cans all made on the same machines. These are disadvantages which have been tolerated but with the e ployment of the present invention they may be entirely eliminated.

Under my invention I employ a scoring die having a sharp edge the shape of which will correspond with the desired line of scoring to be formed upon the piece of metal, but instead of this edge acting throughout at one time against the piece of metal, there is a co-operating roller which presses the metal only locally against the sharp edge of the scoring die and while so pressing the metal, either travels around the scoring die or the scoring die revolves in relation to the roller, so that a local cutting action takes place at any given moment and it progresses until the entire line of scoring has been completed. By having the cutting action reduced to a rather line or limited locality at any given moment it is possible to perform the scoring operation in such manner that the thickness of the metal at the bottom of the scoring line will be absolutely uniform throughout.

The depth of the scoring may be adjusted or regulated from time to time to suit various conditions or requirements, but when the machine is set at any adjusted position its work is then uniform.

In the preferred construction of the machine a revolvable turret is provided carrying a number of scoring dies arranged in circular form upon the turret and adapted to be brought consecutively and individually into operative relation with the roller referred to; and in the preferred construction the roller is mechanically driven and the scoring die is revolved from theroller shaft while the turret remains stationary momentarily. The turret is advanced step by step by a Geneva" movement so that as each piece is scored by the co-operation of the roller and the scoring die, the turret is advanced to bring a new scoring die and a new piece of material into position to be operated on by its scoring die and the co-operating roller.

I have shown herein a simple device for applying caps or can tops or any other flanged mem bers consecutively upon the scoring dies at one side of the machine ready to be advanced into position for the scoring operation; and I have provided simple means for automatically removing the same pieces from the scoring dies after the scoring operation has been completed, in order that the feeding and discharging operations may be automatically performed by the machine.

I have provided simple means also for adjusting the distances between the periphery of the roller and the cutting edge of the dies, .50 that V6 13 line adjustment may be obtained with simple means for varying the depth of the scoring die upon the pieces.

In one form of the invention shown herein the shaft carrying the scoring roller is moved axially by a spring to cause a driving member on the shaft to be frictionally engaged with a driven member associated with the scoring die. In another form of the invention the shaft which carries the roller is adapted to be rocked in order to bring about driving engagement between the driving member on this shaft and the driven member associated with the scoring die.

Other objects and advantages will be set forth in the following detailed description of my invention.

In the drawings forming part of this application,

Figure 1 is a cross sectional view taken on the line I-l of Figure 2 and showing the cap for a can and having a score line formed in accordance with my invention, I

Figure 2 is a plan or face view of the cap with parts broken away,

Figure 3 is a sectional view similar to Figure 1 but showing the portion defined by the scoring being removed, I

Figure 4 is a plan view of the principal parts of a machine embodying my invention in one form,

Figure 5 is a sectional view taken on the line 5-5 of Figure 4,

Figure 6 is a vertical sectional view of a portion of the machine, Figure '7 is a plan view of the same portion of the machine as is shown in Figure 6 but with the main shaft broken away to show the parts below it,

Figure 8 is an enlarged detailed sectional view through a portion of one of the scoring dies and the co-operating roller and associated parts and illustrating the action of the scoring members on the cap,

Figure 8A is an enlarged detailed sectional view illustrating the condition of the cap after the scoring operation,

Figure 9 is an elevation with parts in section and showing a modified form of the machine,

Figure 10.is a detailed sectional view showing the cam device for rocking the shaft which carries the roller,

Figure 11 is a sectional View taken on the line H-l lof Figure 9, and

Figure 12 is a plan view of the parts shown in Figure 9.

In Figures 1 and 2 I' have shown a type of cap which is adapted to be attached to a can top by soldering or by seaming and these are commonly employed in connection with can tops where it is desiredto have a cap of lesser diameter than the whole can top, with a frangible portion within the confines of the cap, adapted to be removed by breaking out the frangible portion or disc to permit discharge of the contents of the can. 7

It willbe understood that my invention is applicable not only to thistype of article but also where the frangible member forms the major portion of the entire can top, but the illustrations herein will teach one application of my invention and from which other applications will be understood by those skilled in the art.

In Figures 1, 2 and 3 I have shown a cap consisting of a disc portion l formed at the bottom of a depressed or cylindrical portion Z which is drawn downwardly from the main portion 3. The latter at its periphery is turned downas shown at 4 to be readily soldered to a can top or to be attached thereto by seaming. The portion I is shown as provided with an annular raised portion or bead 5 and within this bead portion there is formed a local depression 6 preferably of hemispherical shape, to receive therein the end of an instrument by means of which the frangible portion of the cap is adapted to be struck from the remaining portion. There is a circular line of scoring 1 disposed around the cap and outside of the bead 5.

Under my present invention this scoring reduces the metal to an exact equal extent around the score line notwithstanding any local variations in the thickness of the metal, and notwithstanding any irregularities in the metal due to local bending.

When the cap is first formed it is in the condition shown in Figures 1 and 2 and is attached to the can top by any of the well known methods. I ,When the contents of the can are to be discharged, aninstrument such as a nail, screw driver, or any other similar device, is placed with its end in the recess 6 and isstruck with a hammer or other object, and this causes the disc 8 to be broken away from the remainder of the cap around the score line I, whereupon the disc 8 may be removed to provide an opening for the discharge of the contents of the can.

'In the construction of my machine as shown in- Figures 4 to 8 inclusive, I have shown a turret 9 which is revolvable with a central shaft iii.

In the lower part of the machine which is built upon a bed or base I I, there is a housing I2 having a boss l3 in which the lower end of the vertical turret shaft 10 has its bearing, and in this housing there is a Geneva movement'by means of which the turret and turret shaft are revolved, step by step, equal degrees or angles, and corresponding with the positions of the scoring dies on the turret. In the construction as illustrated in the drawings there are eight scoring dies and therefore the turret will be advanced one-eighth of a revolution at each operation of the Geneva movement. There is nothing new in the type of Geneva movement used herein and it will be understood that any type of Geneva movement may be used for advancing the turret.

I have shown the usual star wheel M of the Geneva movement attached to the lower end 5 of the shaft it where it projects into the housing 52 and this wheel is provided with slots IS on its periphery which are adapted to be engaged by the tooth l6 of the member which operates the star wheel, this tooth being carried on the short operates an endless chain 25' and this chain in turn operates the sprocket wheel 28 fixed on a short shaft 21. Thislatter shaft has a mitre gear 29 which meshes with and drives the mitre gear 29 which latter is fixed to the shaft i9 referred to above. Through the driving connections just described the motor serves to revolve the arm I! and the'pin i6 acting in the slots [5 of the star wheel I4 causes the shafts l0 and the turret to be periodically and intermittently turned.

The turret is shown as constructed of two main sections. The lower' section 39 rests and. revolves upon a small raised portion or table 3| formed on the upper plate 32 of the frame of the machine; and it has an annular raised body 33 in which is formed a series of recesses 34 each forming approximately one-half of the compartments in which the connections of the die carrying posts are housed. The inner portion of this lower section of the turret is preferably reduced in thickness as shown at 35 in order to reduce the weight of the turret; and I have pro vided radial ribs 36 to maintain sufficient strength in the turret structure.

The central hub 31 of the lower turret section is secured on the vertical turret shaft in and is preferably keyed thereto by the key 38. The upper turret section 39 is adapted to rest upon the lower turret section and it is formed similar to the latter except that the recesses 40 are disposed in the bottom of the enlarged portion 4! in order to face the recesses 34 and to co-operate therewith to form the pockets 42. The central hub 43 of the upper turret section is also secured to the turret shaft 10, preferably by the same key 38 which secures the lower section.

It will be understood that there may be any number of dies arranged around the turret but in the embodiment illustrated in the drawings there are eight scoring dies and I will so describe the machine without intending to limit my invention to any particular number of scoring dies. There are studs 44 each having a shoulder 45 adapted to rest in a shallow recess in the upper side of the upper turret section, and there is a screw 46 threaded into the lower end of this stud and pressing a washer 41 against the face of the recess 40 to hold the stud in fixed vertical position on the turret. As the construction is the same for each scoring die the description applies equally to each.

The scoring die includes a body 48 of circular form if the scoring is to be of circular form, and this body has an upstanding annular flange 49 the upper edge of which is made sharp to perform the actual cutting of the metal in producing the score line therein. The body of the cutter is reduced in diameter at and between the shoulder thus formed and the top of the turret there is arranged an annular ball bearing assembly 5! so that the scoring die revolves upon a ball bearing to reduce the friction and permit the easy revolution of the die. The body 48 of the scoring die is held in place on the ball bearings by reason of its being revolvable around the fixed stud 44 to which it is secured against rising vertically by means of a screw 52 threaded into the upper end of the stud 44, the screw holding a washer 53 against the top of the stud and the washer being sufficiently large to engage a portion of the top of the scoring die.

When the parts are assembled as shown in Figure 6 and as just described, the body 48 of the scoring die may revolve freely upon the ball bearings supported by the turret, the scoring die revolving around the stud 44 as its axis.

There is a friction member consisting of an annular body 54 which is fitted around the periphery of the body 48 and resting on a shoulder 55. This annular member either has a driving fit on the body 48 or else it is fixed against relative movement by suitable pins or set screws. The annular driven member has an annular flange 56 extending upwardly close to the flange 49 of the scoring die but terminating slightly below the top or cutting edge of the die. The caps shown in Figures 1 to 3, 8 and 8A are fed onto the scoring die into the position shown in Figures 6 and 8 so that the disc 8 of the cap rests on the cutting edge of the die and the flange portion 2 extends down snugly against the outer face of the flange 56 of the driven member 54.

There is a shaft 51 which I have shown disposed horizontally in the supporting standards 58 which are also mounted on the bed H of the machine. The left hand end of this shaft in Figures 6 and 7 extends over a portion of the metal piece and a portion of the cutting edge of the die, and the portion which is adapted to engage the metal piece is provided with a sleeve 58 fitted upon the end of the shaft, which piece is of hardened steel so that there will be no appreciable wear on its surface where it engages the metal discs. The sleeve 58 does not revolve in relation to the shaft 51 as it is fixed thereto but the portion of the shaft having the sleeve 58 acts as a roller in relation to the stock. There is mounted upon the same end of this shaft, by

means of a screw 59, a driving member 60 having a frusto conical surface 6| which is adapted to have frictional contact with the frusto conical surface 62 of the driven member 54. In order to hold these driving and driven members in at one end against a bearing member 66 which is adapted to be adjusted in position by the adjusting screw 61 for the purpose of increasing or decreasing the amount of end thrust of the spring upon the shaft.

I have shown a ball bearing device 68 resting against the end of the shaft 51 where it is held by a machine screw 69. One end of the coiled spring rests against one face of the ball bearing device to exert an endwise pressure on the shaft and the ball bearing permits free revolution of the shaft in relation to the spring.

It will be apparent that thisv spring exerts an endwise pressure on the shaft and that this causes the driving member 60 to be pressed tightly against the driven member 54 when the latter is in stationary position in alignment ready for the scoring operation on one of the caps.

On the shaft 51 there is fixed by means of a set screw 10 a sprocket wheel 'Il around which engages an endless chain 12 and this chain also engages around the sprocket 13 which is mounted on the sprocket shaft 23. Through these conneetions the driving force transmitted from the motor is applied to the shaft 51 to revolve the same, thereby revolving the roller member 58 above the scoring die.

In order to adjust'the shaft 51 and therefore the position of the roller 58 so that the scoring. may be carried to any desired depth, I have provided a wedge 14 which is movable horizontally and between the lower and upper halves of the standard 58, 15 in order to raise or lower the upper half of the standard and thereby shift the vertical position of the shaft 51. This wedge is adapted to be moved to the right and left in Figure 6 by means of the screw 16 which is threaded into an aperture 11 in the upper sectionof the standard. The screw has a flange 18 extending into a slot in the wedge so that the screw carries the wedge with it; and on the end of the screw there are holes '19 to receive a tool for turning the screw in either direction. By means of this wedge and the screw a very fine adjustment may be made in the vertical position of the shaft 51 so that the surface of the roller 58 may be arranged at various distances from'the cutting edge of the die in. order to change the depth or' cut of the die in making the scoring.

As stated above, I have provided means for automatically feeding caps onto and removing them from the scoring dies. As shown in Figures 4 and 5, there is an inclined chute 80 in which the discs 8| travel downwardly in contact with each other until they reach a position at the end of the chute directly over the paths of the several dies.

As a die moves with the turret under the end of the chute one of the caps moves down on top of the die and as the turret makes another step by step movement the spring arm 82, which is attached to the chute, exerts a downward pressure on the cap to snugly seat it on the die in the position shown in Figure 8. 7

Another arm 83 also arranged adjacent the path of the dies continues to press the cap onto the die' after it moves away from the spring arm 82. The dies finally move away from the spring arm 83 and progress step by step with one cap seated on the top of each die, until a die reaches the position under the roller 58 where the scoring operation takes place in the manner hereinafter described; and then as the turret continues to advance step by step the scored cap reaches a position adjacent the end of the discharge chute 84 which is inclined downwardly from the plane of the turret, as shown in Figure 5. When the cap arrives at the end of this chute the lower end or corner of a releasing arm 85 engages under the outer edgeof the cap. As the die to which the cap referred to again advances with the turret, the inclined end 86 of the arm 85 pries up the outer edge of the cap and finally releases it from the die so that the cap is forced by the forward edge 81 of the arm into the end of the chute 84 and the cap' finally moves by gravity down the chute to be discharged from the machine. Thus the caps are automatically applied to and removed from dies although they may be hand fed and hand removed, if desired. The applying and removing.

device herein described is not, per se, new in the present case and it will be understood that any other form of device may be used for the same purpose.

Operation ,When the machine is in operation the turret the dies are brought successively adjacent the end of the chute'BO to receive individual caps over the top of each die. Likewise the dies, each with a cap applied thereto, are successively moved into scoring position and then the die and capare advanced step by step until the cap is removed by the arm 85; and the die continues to move step by step until it again reaches the feeding chute 80.

As the die arrives at the station where the scoring operation takes place the driven member 54 pressesagainst the driving member Sllforcing the shaft 5'! to the right in the position shown in Figure 6 where the spring 55 acting as a thrust force on" the shaft 51 retains the driving and driven members forcibly into frictional contact.

While the scoring die with the cap remains under the roller 58 and the'turret remains'sta 'tionary, the driving member 68 on the shaft 51 acts on the driven member 54 to frictionally drive the latter, and since the latter is fixed in relation to the die the latter is revolved around its stud 44 the die requiring very little force to drive it because of the ball bearing device 5|. While the die is under the roller 58 the cutting edge of the die and the surface of the roller have a fixed relation as far as the spacing is concerned and this spacing determines the depth of cut in the metal cap. As the roller and the die revolve, the cutting edge of the die and the surface of the roller press against opposite surfaces of the metal disc 8 so that the cutting edge is forced into the metal cap- Both the surface speed of the roller and the speed of the cutting edge of the die are the same so that as the die revolves with the cap, the roller 58 presses-locally on the cap against the cutting die.

The cutting die, at this point, pierces the metal to the same extent, that is to say, the thickness of the metal between the bottom of the scoring and the opposite surface of the metal is absolutely uniform when the die has made one complete revolution under the roller. Whereas under previous methods the entire die was simultaneously pressed against the metal cap, in the present case the pressure is local, that is to say, at the surface of the roller 58, so that if there are any'variations in the thickness of the cap or any deflection in d the wall which is being scored, the scoring will be carried to the same uniform degree throughout.

When the cutting die has made one complete revolution about its own axis in co-operation with the roller 58, the scoring operation will have been completed and by that time the turret will be advanced or turned another step. This will move the die which has just performed its operation on a cap away from the roller and into the next position toward the discharging device. It will also bring a new die and its cap into position under the roller 58 ready for this die to perform its scoring operation in connection with the cap seated on this die. These operations will take place successively so that as long as caps are fed onto the dies they will progress with the turret into a position to perform the scoring operation and thence, step by step, back to the starting position.

If it is desired to increase or decrease the cutting depth of the scoring die, the adjusting screw 16 is turned either right or left, according to which way the wedge 14 is to be moved to either raise or lower the standard 58 and thereby adjust the vertical position of the roller 58 in relation to the cutting edge of the scoring die.

It is to be understood that when this adjustment is being made the bolts 88 which secure the upper portion of the standard to the lower may be slacked off in order to allow the wedge 14 to be moved; and then these bolts are again tightened to secure the standard rigidly until a further adjustment is to be made.

In the form of the invention thus far described, the driving member 60 and the drivenmember 54 are held in frictional engagement by the action of the spring 65 which moves the shaft 51 lengthwise. It will be understood that any other means may berprovided for transmitting the motion from the shaft 51 to the scoring die for revolving the latter such as gears or other driving means.

In Figures 9 to 12 I have shown a modified construction wherein the roller shaft is rocked in order to bring about driving engagement between the driving and driven conical members 60, 54. In this form of the invention the bracket or standard for supporting the roller shaft consists of the lower section 89 which is bolted rigidly to the base 90 and. it is provided with ears 9| to receive the stud shafts 92. The upper section 93 of this standard is provided with ears 94 which overlap the ears 9| of the lower section of the standard. The studs 92 having smooth ends extending into the bores of the ears 9| have threaded sections screwing into the ears 93 whereby the upper section of the standard is pivotally mounted on the lower section so that it may rock in an arc the center of which is the axis of the studs 92. A coiled spring 95 which is arranged in a socket formed partly in the upper and partly in the lower sections of the standard, tends to rock the upper section of the standard into the position shown in Figure 9 in which position the driving member 60 will be just out of engagement with the driving member 54 due to the tilting or rocking of the shaft 51.

There is a lever 96 pivoted upon the shaft 91 on a bracket 98 forming part of the frame of the machine. One arm of this lever has a recess 99 engaging the rounded end of a plunger I which extends upwardly through aligning apertures in the base and the lower member 89 of the standard. The upper, rounded end of this plunger engages in a similar recess llll in the bottom of the upper section 93 of the standard. The lever 96 has another arm which carries an anti-friction roller I02 and this roller engages with a cam 03 on the sprocket shaft 23.

It will be observed that at each revolution of the cam Hi3 the lever 98 is rocked, and this causes the standard section I04 together with the shaft 51 carried by it to rock anticlockwise from the position shown in Figure 9, and thence back again to this position. When the plunger I00 moves upwardly and rocks the upper standard section and the shaft 51 counterclockwise, it forces the driving member 60 into frictional engagement with the driven member 54 and at the same time it brings the pressure roller 58 down against the cap and presses it against the edge of the scoring die.

While the parts are in this position, the scoring die makes its revolution, completing the scoring operation, whereupon the plunger I80 moves downwardly and the spring 95 rocks the standard section EM and the shaft 51 back into the position shown in Figure 9. When this latter occurs, the turret advances another step and brings another die and its cap into position for another scoring operation. The same form of wedge and adjusting screw are shown in Figures 9 and 11 for adjusting the relation of the roller 58 to the scoring die to control the depth of the cut of the latter as in the first described form of my invention.

Where caps are scored in the manner described herein, the discs defined by the scoring may be readily broken away with a single blow, the break being clean throughout the line of scoring.

It will be understood that the cutting edge of the scoring die need not be a circle, but it may be in the form of the figure 8, oblong, oval, or of any other contour, but the scoring operation will be performed nevertheless in the manner described above. The surface of the pressure roller 58 is made sufficiently wide to accommodate scoring dies having cutting edges of various shapes, as referred to.

In Figure 8A I have shown a section through a cap, scored in accordance with my invention, in which the score line 1 is shown extending part way through the metal of the cap. If a section is taken through any other portion of this same cap, the thickness of the metal between the bottom of the scoring, and the opposite surface of the cap will be uniform down to one-thousandth of an inch, whereas this uniformity could not be obtained under the methods and machines heretofore used.

It will be understood that instead of small caps the heads to be used for tin cans may be scored in the same manner as described above, except of course, that the size of the dies will necessarily correspond with the size of the can heads. 15

Having described my invention, what I claim is:

l. A scoring machine having a die provided with a flat plane, ring shaped cutting edge, said die adapted to receive a piece of stock thereon to be scored, and a roller arranged to press the stock against the cutting edge of said scoring die and acting at a single point at a time and acting progressively on the stock to progressively score the same along the scoring line defined by the cutting edge of said die, means for revolving said die and stock in relation to said roller, and means for revolving the roller on its own axis while pressing the stock against said die.

2. A scoring machine having a die provided with a flat plane, ring shaped cutting edge, said die adapted to receive a piece of stock thereon to be scored, and a roller arranged to act at a single point at a time to press the stock against the cutting edge of said scoring die and acting progressively thereon to score the same along the scoring line defined by the cutting edge of said die, said roller being cylindrical and mounted with its axis parallel to the plane of the cutting edge of said die, means for revolving the die and stock in relation to the roller, and means for revolving 40 the roller on its own axis while the stock and die are being revolved.

3. A scoring machine having a die provided with a fiat plane, ring shaped and continuous cutting edge, said die adapted to receive a piece of stock thereon to be scored, and a cylindrical roller mounted on an axis parallel to the plane of the cutting edge, of said die and radially of said die, said roller arranged to act at a single point at a time to press the stock against the cutting edge of said scoring die and acting progressively thereon, means for revolving the die and stock in relation to the roller, and means for revolving the roller on its own axis while the die and stock are being revolved.

4. A scoring machine having a revolvable die provided with a flat plane, ring shaped cutting edge and adapted to receive a piece of stock thereon to be scored, a shaft part of which acts as a roller, said roller arranged to act at a single point at a time to press the stock against the cutting edge of said scoring die and acting progressively thereon, means for revolving the shaft, and means for transmitting operating force from said shaft to revolve said die and stock in relation to the roller and in synchronism therewith.

5. A scoring machine having a revolvable die provided with a fiat plane, ring shaped cutting edge, said die adapted to receive a piece of stock to be scored, a shaft part of which acts as a roller and arranged to act at a single point at a time to press the stock against the cutting edge of said scoring die, means for revolving said shaft and co-operating frusto conical members, one associated with said shaft and the'other associated with said die whereby operating force is transmitted from said shaft to said die to revolve the latter and the stock in relation to said roller.

6. A scoring machine having a revolvable die provided with a flat plane, ring shaped cutting edge, a driven member fitting around the periphery of said die, a shaft having its axis disposed parallel to the plane of the cutting edge of the die and having a portion acting as a roller acting at a single point at a time to press the stock against the cutting edge of said die, anda member mountedon said shaft and co-operating with said driven member to transmit operating force from said shaft to said die to cause the latter and the stock to revolve in relation to the roller.

7. A scoringmachine having a die provided with a flat plane, ring shaped cutting edge and revolvably mounted on a support, a driven member fitting on the periphery of said die and having a frusto conical friction surface, ashaft disposed parallel to the plane of the cutting edge of said. die and havinga portion acting as ajroller acting at a single point at a time to ,press the stock against the cutting edge of said die, a driving member on said shaft having a frusto conical friction surface to co-operate with the frusto conical friction surface of said driven member, means for revolving said shaft and means for exerting an end thrust on the shaft to press said driving and driven'members into frictional engagement.

8. A scoring machine having a revolvable die provided with a fiatzplane, ring shaped cutting edge, a shaft having a portion acting as a roller arranged with its axis parallel to the plane of the cutting edge of said die, said roller portion acting at a single point at .a time progressively on the stock to press the .same against the cutting edge of said die, means for revolving said roller on its own axis and for revolvingsaid die and stock, and means for adjusting the position of said shaft to regulate the distance between :the periphery of said roller portion and .the cutting edge of said die.

9. A scoring machine having a revolvable die provided with a flat plane, ring shaped cutting edge, asshaft having a portion acting as a roller arranged with itsaxis parallel to the plane of the cutting edge of said die, said roller shaft acting at a single point ata time progressively on the stock to press the same against the cutting edge of said die, means for revolving said roller on its own axis and for revolving-said die and stock, and

means for adjusting the position of said shaft to regulate the distance between the periphery of said roller portion and the cutting edge of said die, including a wedge and a screw for moving said wedge.

10. A scoring machine having a turret and means for intermittently revolving the same step by step, a plurality of dies revolvably mounted in 5 circular relation on said turret, said dies adapted to receive pieces of stock thereon and each provided with a flat plane, ring shaped cutting edge, a roller to which said dies are progressively presented by the movement of said turret, said roller being disposed parallel to the plane of the cutting edge of the dies and acting at a single point at a time progressively on the stock at a time to press the same against the cutting edge of a die when presented thereto, means for revolving the dies when presented in operative relation to said roller and means for revolving the roller while the same is pressing the stock against the cutting edge of the die.

11. A scoring machine having a revolvable turret and means for revolving the same step by step, a plurality of scoring dies revolvably mounted on said turret in circular relation, each die having a flat plane, ring shaped cutting edge disposed in a horizontal plane and adapted to receive a piece of stock thereon to be scored, a shaft mounted horizontally adjacent one of the stopping positions of the die on said turret and having a cylindrical roller portion arranged to act at a single point at a time on the stock to press the 3 same against the cutting edge of the die when the latter is presented in operative relation thereto, means for revolving the die and the stock when presented in operating relation to said roller, means for revolving said shaft, and means for ver- 5 tically adjusting the position of said shaft to vary the spacing of the periphery of said roller portion from'the cutting edge of the die.

12. A scoring machine having a turret provided with a plurality of dies revolvably mounted there- 40 on, means for revolving said turret step by step to present the'dies and the stock successively into operative position, a driven member for each die, each die having a flat plane, ring shaped cutting edge, a shaft disposed with its axis parallel to the plane of the cutting edge of said dies, a driving member on said shaft for operating said driven members, a cylindrical roller on said shaft acting at a single point at a time and pressing against the stock to press the same against the cutting edge of a die, rocking means for supporting said shaft, and means for periodically rocking said shaft support to rock said shaft and thereby throw said driving and driven members into and q out of operative relation.

ISIDOR NEWMAN.

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