US1287551A

US1287551A - Stock-cutting machine.

Info

Publication number: US1287551A
Authority: US
Inventors: Erastus E Winkley
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1915-01-15
Filing date: 1915-01-15
Publication date: 1918-12-10
Anticipated expiration: 1935-12-10

Description

E. E. WiNKLEY.

STOCK CUTTING MACHINE.

APPLICATION FILED JAN. 15. m5.

Patented Dec. 10, L918.

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E. E. WINKLEY.

STOCK CUTTING MACHiNE. APPLiCATiON HLEDJAH. 15, e915.

Patented Dec. 10, 1918.

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STOCK cumwa MACHINE.

APPLICATION FILED JAN. 15. l9l5.

1,287,55 3., Patented Dec. 10, 1918.

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STOCK CUTTING MACHINE.

APPLICATTON FILED JAN. I5. 19I5. 1 21551, Patented. 960.10, T918.

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ERAS'IUS E. WINKLEY, or LYNN, MASSACHUSETTS, ASSIGNOR, BY ,MESN'E AssIeN- MENTS, To UNITED SHOE MACHINERY CORPORATIQN, or PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

STOCK-CUTTING MACHINE.

Specification of Letters Patent.

Application filed January 15, 1915. Serial No. 2,342.

To all whom it may concern.-

Be it known that I, ERASTUS E. WINKLEY, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Stock-Cutting Machines; and I d?) hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

This invention relates to stock cutting machines for operating upon leather and similar material. More particularly, the invention relates to a die cutting machine for dieing out blanks of shoe stock from a sheet of leather-board. I i

In the manufacture of heels and soles for boots and shoes it has been customary to die out lifts andtaps by a movable die cutting against a block upon which the material was fed forward by hand or some automatic feeding means. In machines employing a feeding means the stock is fed forward usually step-by-step by oscillating arms or by feed rolls, and with such mechanism when running at a comparatively high speed the stock from which the blanks are cut is. not accurately positioned. As a result the stock is fed either too far across the die, so that the material is wasted, or not com letely across the die, so that chipped blanlis are produced which are useless. This requires that the blanks be sorted to remove the damaged ones. This method incurs an expense for sorting as well as being wasteful of material. It is generally customary to cut the blanks from a strip of material which ap pronimates in width the length or width of the blank to be cut. Since the blanksare of irregular contour, a considerable amount of waste results from the blank cutting operation and there is necessarily a certain portion of the strip wasted at the end where the size of the blank being cut is such that the length of the strip is not an exact multiple of the width of the blank.

The obj cct of'this invention is to overcome the above mentioned difficulties, and provide a machine which will feed the stock to cutting position through an unvarying, predetermined distance and which will so position the cuts that the minimum amount of material will be discarded in the cutting operation and so that none of the blanks pro duced wlll be chipped or otherwise defective. In accordance with this obj eat, one feature .of the invention contemplates the provision in a die cutting machine comprising a die for cutting against a block and an intermittent feeding means to advance the stock across the die, of a stop mechanism for preventing further advance of the stock by the feeding means when the stock has been completely moved across the die into a position to produce blanks with the least waste of stock.

Another feature of the invention contemplates the provision in a die cutting machine for operating on a sheet of material, of a trimming knife coacting with the die totrim the'died out stock and form a guiding edge on the sheet, so that: the adjacent rows of cuts may be made in staggered relation to one another across the sheet.

These and other features'of the invention, including certain devices, combinations and arrangements of parts, the advantages of which will be readily recognized by those skilled in the art, will be fully set forth in the accompanying description and .then particularly pointed out in the appended claims.

The preferred form of the present invention is illustrated in the accompanying drawings, in which:

'Figure l is a side elevation with parts broken away to better illustrate certain features of the invention; j

Fig. 2 is a plan of the supporting table, showing the cutting die and the relation of the stock positioning means thereto;

Fig. 3 is a plan of a sheet of stock showing the relation of cuts made by the machine;

Figs. 4: and 5 form together a complete sectional elevation looking in the direction of the arrows on the line 4L5 of Fig. 2;

Fig. 6 is a partial plan partly in section showing details of the improved stock feeding mechanism;

Fig. 7 is a sectional elevation taken on the line Z7 of Fig. 2, looking in the direction of the arrows;

Fig. 8 is a detail showingthe mechanism for locking the feeding means out ofoperation;

Fig. 9 is a sectional detail taken on the line 99 of Fig. 4;

Fig. 10 is a detail view showing the stop finger locking mechanism; and

Fig. 11 is a sectionaldetail of the cutting block taken on the line 1010 of Fig. 1, looking in the direction of the arrows.

In the embodiment of the invention illustrated in the drawings, the machine frame has a head 12, in which a cutting die 14 (Fig. 1) is movably mounted, and also supports a casting 16 to which a table 18 is attached. Above the head 12 the frame has an overhanging arm 20 which carries the cutting block mechanism 22 and its thrust lever 24. The die 14 is mounted on a plunger 26 (Figs. 4 and 6) connected at its lower end with one arm of a toggle 28 (Fig. 1). The other arm 30 of the toggle is attached to the machine frame, and the knuckle of the toggle is connected by means of the

levers

32 and 34 with the arm 36 of an eccentric 38 mounted on amain cam shaft 40. The lever 34 is pivoted on a rod 42 which is carried in a pair of brackets 44 (see Fig. 1). WVith these connections the die will reciprocate toward and away from the cutting block for each revolution of the eccentric 38.

The shoe stock, in sheet form, is intermittently advanced across the table by feeding arms, and then clamped by the cutting block upon the support during the cutting operation while the feed arms retract to take a new grip upon'the stock. The edge of the sheet of the stock, during the feed, is held against a guide 46 (Fig. 2) which has a movable section 48. The section 48 extends approximatelyto the forward edge of the die, and, therefore, comes in the path of travel of the cutting block 22 which is indicated by dot anddash lines in Fig. 2. When the block is lowered to clamp the work upon the support, the section 48 is pushed down in a guideway 50 against the tension of a. spring 52 (Figs. 1 and 2) and when the cutting block is raised the section 48 will be drawn back by the spring into normal position. The stock is carried forward by a pair of up per and lower feed arms 54 and 56 (Figs. 4

and 5) which have

stock gripping fingers

58 and 60 respectively. The

fingers

58 and 60 bite into the stock and carry it forward upon the forward stroke of the feeding arms and the finger 58 is yieldingly pivoted to its arm 54' so as to permit a retraction of the feeding fingers to take a new grip on the stock. The feed arms are attached to a feed block 62 that is slidably mounted in the table, as shown in Figs. 2, 4 and 5. A feed slide 64 integral with the feed block has its forward end mounted in a clutch bearing 66, (see Fig. 7). The feed block and slide are reciprocated toadvance the stock step by step by means of a feed link 68 (Fig.5) which is connected with a take-up rod 7 0 yieldingly mounted in

brackets

72 and 74 depending from the feed block. The take-up rod 70 is slidably mounted in the

brackets

72 and 74 and is provided with fixed collars 76 which are normally held against the for ward edges of the brackets by means of a take-up feed spring 78. The feed link 68 has a pivotal connection at its rear end with an adjustable sleeve 80 which is attached to the take-up 70. The forward end ofthe feed link is adjustably connected with a slotted feed lever 82 (see Figs. 2 and 5). With the adjustable sleeve 80 and the slot connection with the lever 82, the feed link may be set to give any desired travel to the feed block to adjust for difierent sizes of cutting dies. The feed lever 82, is mounted for oscillation upon a vertical rock shaft 84 (see Figs. 1 audit) which has an arm 85 at its lower end. The arm 85 has a universal joint connection 86 with a cam lever 88 pivoted on the rod 42. The cam lever has a roll 87 which is yieldingly held in contact with an eccentric cam 90 on the main cam shaft by means of a spring 92 connected between the lever and the machine frame.

To insure against an under feed of the stock; the feed lever 68 is normally set so that it will be advanced by the throw of the cam 90 a greater distance than the stock is required to be advanced to properly locate the stock over the die. Therefore, as the stock advances with the feed arms it abuts against stop fingers which positively hold the stock from further advancement and in the proper position for cutting. The excess movement of the feed link is taken by the feed spring 78 without further advance of the feed arms. The stop fingers, shown at 94 and 96 in Figs. 2, 4 and 6, normally project above the surface of the support 18 and are located adjacent the front edge of the die 4, so that the forward edge of the stock will abut against them and thereby the stock will be positioned for a cut with the least waste of material. The stop fingers are mounted in adjusting blocks 98 (see Fig. 9) and may be moved forward and backward by means of screws 102 which are threaded into the shanks of the fingers and have their heads secured against longitudinal movement in lugs 97 at the rear ends of the blocks. The blocks are pivotally hung on a rod passing through the upper ends of stop levers 104, and springs 106 are arranged between the levers and lugs 108 depending from the adjusting blocks. These springs 106 hold the stop fingers normally in a position where they project above the table 18. The stop levers are keyedv to a rock shaft 110 (Fig. 4)

that is journaled in brackets 112 (Figs. 1

and 6) depending from the under side of the table 18.

The actuating mechanism for the stop fingers 94 and'96 1s timed, with relation to the feeding movement, so that they are projected above the surface of the table at a time when the stock has'been advanced by the feeding arms approximately one-half the width of the blank to be cut and are depressed below the surface of the table, after the blank has been cut, in order to permit the died-out stock to be advanced. The stop fingers are depressed below the surface of the table by means of a cam roll 114 attached to a rod 116 (Figs. 2, 4 and 6) said roll working on cam surface 118. formed on the surface of the stop finger adjusting blocks. The rod 116 is connected by means of a bell crank lever 120 mounted on a stud attached to the under face of the clutch bearing (see Fig. 7). The bell rank lever is connected for oscillation, by means of

arms

122 and 124,

' with the vertical rock shaft 84 so that as the feed cam 90 reci rocates the feeding mechanism, the cam r0 1 114 will, by its engagement with the cam surfaces 118, draw the stop fingers out of the path of movement of the stock. When the stock is brought into engagement with the fingers they are pushed forward slightly and the stop levers are oscillated which movement rocks the shaft 110. A locking lever 126 (Fig. 7) is keyed to the rock shaft 110 and is rotatably connected by means of a bifurcated link 128 (see Figs. 6 and 7) to a lockin block 130. This locking block surrounds t e feed slide 64 and extends within the clutch bearin 66 and engages and holds the clutch ro ls 132 in inactive position. When the lever 126 is oscillated, the block 130 is drawn out from the clutch bearing and releases the clutch rolls 132 to the action of their springs 134 thereby locking the feed slide against further advance. The clutch rolls are normally held in their inactive position, shown in Fig. 7 by means of a spring 136. This spring surrounds a pin 138 passing. through the lever 126 and pivoted to an arm on the bearing 112. A nut 137 on the pin permits an adjustment of the locking block 130 to vary the extent of its projection within the clutch bearing 66. It is thus seen thatwhen in its normal position, the block 130 forces the clutch rolls 132 back against the tension of the springs 134 and allows the feed slide to move freely through the clutch bearing. WVith this construction, when the stock is clamped by the feeding

fingers

58 and 60 and carried forward, the feed slide 64 is advanced with the parts in the position shown. in Fig. 5 until the advancing1 stock engages and moves one or both of t e stop

fingers

94 and 96 when its advance ceases by reason of the engagement of the clutch rolls 132 with the clutch jaws 140 which lock the feed slide from further movement. Any further movement of the feed lever 68, due to the throw of the feed cam 90, after the slide is locked, is taken up by a compression of the take-up spring 78, and take-up rod 7 0 sliding through its bearings 7 274.

After the stock has been advanced across the die, the cutting block descends to clamp the stock upon the table and provide a cutting abutment for the die as it rises to cut out a blank. The cutting block 141 (Figs. 1 and 11) is attached to an adjusting hollow screw cylinder 142 which is connected with a reciprocating head 144 mounted in the overhanging arm 20. The reciprocating head consists of a block 145 secured to a pair of plungers 146 slidably mounted in the casting 20 and connected together, above the casting, by a yoke 147. The yoke, and consequently the cutting block also, is nor mally held in elevated position by a leaf spring 148 mounted upon the machine frame. The cutting block head is adapted to be thrown into and out of connection with its thrust lever 24 so that the dieing operation may be stopped at will. The thrust lever is provided at its lower end with a roll which is held upon a cam 150 on the cam shaft 40 by a spring 152 (Fig. 1). The upper end of the lever 24 is adapted to contact a trip latch 154 that is pivoted to the head 144. With the latch in the position shown in Fig. 1 the cutting block mechanism will be reciprocated by the oscillation of the lever 24 but if the latch is swung to the right, viewing Fig. 1, the thrust lever will not operate the cutting block and it will be held in elevated position by spring 148.

The cutting block 141 is attached to a plate 156 by means of series of adjustable hooks 158 whichhook over a shoulder 159 on the block and have their heads inovab'ly mounted in the plate. The plate is rotatably mounted upon a plug 160 which is fixed from rotation on the interior of the screw cylinder 142 by means of pins 162 which project upwardly through openings in the block 145 (see Fig. 11). With this construction the plate 156 may be eccentrically mounted by means of the pin 164, so that the block may be adjusted laterally with respect to the die. In some classes of work the block 141 may be made of hardened steel, in which case it would not be adjusted by a rotation about the pin 164 until the cutting surface became defective. With other classes of stock it is desirable to construct the block 141 of wood, and in such a case the plate 158 may be provided with a set of peripheral teeth 166 which coact with the pawl 168 to give the block an intermittent rotation during the operation of the machine. The pawl 168 (Fig. 1) is connected with a bell-crank 170 which is pivoted on the machine frame 20, and the horizontal arm of the bell crank has a pin and slot connection 172 with the ad justing screw cylinder 142. Thus, as the cutting block is reciprocated the pawl 168 is actuated by the bell-crank 170 to advance the block angularly.

, j The cutting block and die have a uniform &

distance of travel to meet at a point above the table when cutting out the blanks. The support or table 18 is yieldingly mounted by means of spring plungers 176 (Figs. 1 and 2) which consist of a spring 178 held between a cylinder 180 on the casting 16 and a cylinder 182 attached to the table. As the cutting block comes down to form an abutment for the die, and also clamp the work any variation in thickness of the stock will be taken up by the yield of the table The block is made adjustable by means of the screw 11-2, in order to locate it properly with respect to the upward movement of the die, and is locked in its adjusted position by means of a set screw 17 1 (Fig. 11). WVhen using awooden block the cutting surface be comes rough more or less rapidly, and has to be trimmed down, so that in this case adjustment of the block is more frequently necessary. In case the stock is very thick, it is desirable to adjust the meeting plane of the die and the block so that the table movement will not be too great. When the table moves it carries the feeding and stop mechanism with it. This movement is very small and is easily taken care of by the con nections of this mechanism with the rock shaft 84: so that there is no binding of the parts.

lVhile the blank is being cut by the die 14, the stock is also trimmed so as to form a guiding edge for the next row of cuts. The trimming knife 183 Figs. 2 and 6) is: mounted on the plunger 26 which carries the cutting die 14. The trimming knife and die may be changed for different types of blanks, and such dies and knives are adjustably mounted in the plunger 26 by means of shim blocks 18 1 and set screws 186. Referring to Fig. 3, showing the mode of cutting a sheet of stock, as the die 14 comes down to cut out the blank at A, the trimming knife 183 will cut the between substance of the previously died out stock at B. These trimmed edges 188 form a straight edge to engage the guide 46 and properly locate the stock when making the next row of cuts.

The stop finger 96 is adapted to engage in the row of cuts previously made, having the trimmed guide edge, and the other finger 94 engages the stock in the row of cuts being made by the die. These stop fingers position the work so that the blanks of one row are in positions longitudinally intermediate those of the neXt row, thus producing rows in staggered relation and resulting in the saving of considerable material. It will be noticed that with this construction, the size of sheet of stock which may be used in this machine is practically unlimited, which also provides a saving of the usual waste material at the edges of sheets.

The cam shaft 40 is adapted to run continuously while operating the machine. Therefore, when it is desired to stop the dieing operation the cutting block is disconnected from the thrust lever and the feeding mechanism locked out of operation by the depression of a treadle. The treadle (not shown) is connected by means of a shifting rod 190 (Fig. 1), a bell crank 192 pivoted on the frame and a link 194, with the trip latch 154. When the thrust lever 24: is exerting no pressure on the cutting block, a depression of the treadle will move the shiftino' rod downward and rotate the latch out of the path of travel of the thrust lever.

The shifting rod 190 also actuates a feed locking latch 196 pivotally mounted upon the machine frame adjacent the lever 88 (see Figs. 1 and 8). The latch 196 is connected to the shifting rod by means of a spring 198 which is attached to a horizontal pm 200 on a block 202 secured adjustably on said rod. The treadle can be moved to throw out the trip latch 154 at any time when the thrust lever i elevated and not exerting pressure upon the cutting block, but the feed locking latch 196 can only be operated by the spring 198 to lock the lever 88 and hold the feeding mechanism in in-- operative position when the lever has been moved to its lowest position by the eccentric cam 90. lVhen the lever 88 reaches its lowest position, after lowering the shifting rod 190 by a depression of the treadle, the forked end 201 of the locking latch 196 will be forced by the spring 198 to a position above the lever. Further rotation of cam 90 will permit the spring 92 to draw the lever 88 up into the fork 204 so that the latch 196 acts as a' strut to prevent the spring 92 from holding the lever 88 on its cam 90 during the greater part of the revolution of the cam.

The operation of the machine is as follows:

Assuming the machine to be in a position with the cutting block held in elevated position and the feeding mechanism disconnected from the driving parts, the stock is placed upon the table against the guide and stops. The block 202 on the shifting rod will be in the position shown 1n dotted lines in Fig. 8 and by releasing the treadle, the trip latch 154. will be shifted to its position shown in Fig. 1 to connect the cutting block with its thrust lever when said lever next rises. By shifting the rod 190, the block 202 is carried to the position shown in full line Fig. 8 and the shifting of the spring- 198 thereby tends to draw the locking latch 196 from its dotted to the full line position. The latch, however. will not be released by the lever 88 until the cam 90 has contacted the roll 87 and raised the lever out of the fork 204. At the time the feeding cam lever 88 is released to operate the feeding mechanism, the feed arms are at the forward end of their stroke. At this same time, the cam 150 and eccentric 38 are so arranged that the cutting block is clamping the work and the die 14; is rising to cut a blank. While the blank is being cut, the feed arms retreat to get a new grip on the work and the stop fingers are drawn down to get out of the path of advance of the stock. After the feed arms have taken a new grip on the work, the cutting block rises to permit the feeding means to advance. When the forward edge. of the stock has been advanced into engagement with the stop fingers, the stop levers 104 will be moved back to rock the shaft 110 and draw back the locking block 130, to lock the feed slide and prevent further forward movement of the stock.

The cutting block then again descends to clamp the work and the die and trimming knife rise, cut the blank and trim the died out stock. The died out blanks go down through a chute 206 in the plunger 26 (Figs. 1 and 4) while all of the trimmings from the cutting operation are held up by the table 18 and are pushed over the forward edge of the table by the feeding movement of the sheet of stock.

In making the first row of cuts on a sheet of stock, it may be necessary to adjust the guide 46 closer to the die to prevent waste of material and in such case, the stop finger 96 would be drawn down and locked in an inoperative position. The finger 96 is locked out of operation by means of a latch 208 (see Fig. 10) pivoted on the lug 108 of the adjusting block 98. The latch has a locking slot 210 which is adapted to hook over a pin 212 in thestop lever 104 onwhich the latch is slidably mounted when the stop finger has been drawn down to compress the spring 106. After the first row of cuts has been made and trimmed, a sinuous edge, such as shown in Fig. 3 is produced and then the guide 46 is set back and the finger 96 brought into operative position by releasing the latch 208 from the pin 212. Both of the stopfingers then cotiperate to position the stock in making the next row of cuts.

In the illustrated embodiment of the invention a double die for cutting heel lifts is shown, but, obviously, many types of dies or cutting tools could be substituted to make any desired form of cut. Those skilled in the art will readily recognize that the machine is equally well adapted for cutting strips of stock as well as the sheets described in connection with the illustrative embodiment of the invention, the particular character of stock to be used depending upon the fitness of the stock for the type of cut to be made. 7

Throughout the specification and the claims the terms forward front backward and back are used to denote positlons of the parts with relation to the direction of travel of the stock as shown in Fig.

4;. Further, in the following claims all references to position, or direction of movement of'the elements, are to be interpreted as terms of designation and not of limitation, as obviously, it is the relative position or relative direction of movement which alone is of importance.

Nothing herein contained is to be interpreted as limiting this invention in the scopeof its application to use in connection with the particular machine, or the particular mode of operation, or both, selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention, it isnot to be undercombination, a cutting tool, a block against which the tool operates, an adjustable support for a sheet of stock, means to move the block through a constant distance to clamp the stock" upon the support, and means to advance the tool to cut blanks.

3v A stock cutting machine, having, in combination. a feeding device for advancing the stock, comprising a pair of cooperating reciprocating arms, feed fingers mounted on the arms for gripping the stock, and a stop adapted to project into the path of advance of the stock to positively hold the stock and thereby insure that the forward edge of the stock will be entirely across the die at the end of a feeding stroke.

4. A stock cutting machine, having, in combination, a cutting block, a die for cutting against the block, means to relatively move the die and block, and a trimming knife movable with the die for trimming the sheet of stock to prepare the stock so that the next row of blanks may be cut in be died out in staggered relation upon the sheet.

6. A stock cutting machine, having, in combination, a block, a die for cutting against the block, feeding means for advancing the stock, and a stop at the front of the die adapted to be projected into the path of advance of the stock during the feed to positively engage the stock and prevent the advance of the stock more than the Width of the die.

7. A stock cutting machine, having, in combination, a cutting tool, a feeding device for advancing stock to the tool com prising a reciprocatory feed block, stock gripping arms carried by said block for advancing the stock, a yieldingly mounted feed arm connected With the block, and a stop mounted adjacent the tool for arresting the advance of the stock and holding it against the yielding mounting of the feed arm to prevent an over-feed of the stock.

8. A stock cutting machine, having, in combination, a die, a cutting block above the die, feeding means for intermittently feeding the stock between said parts, a stop finger adjacent the die, and means opera tively connected With the stop for stopping the advance of the feeding means when the stock has been brought against the stop.

9. A stock cutting machine, having, in combination, feeding means comprising a reciprocatory block, stock gripping arms mounted upon. the block, a stop finger in front of the gripping arms, and means connected with the stop finger to lock the feeding means from movement When the feeding means has advanced the stock against the finger.

10. A stock cutting machine, having, in combination, a support, a reciprocatory feeding means for advancing stock across the support, and a stop finger located in the line of advance of the feeding means adapted to project above the support to stop the advance of the stock and to be retracted below the support toapermit the advance of the stock after it has been operated upon.

11. A stock cutting machine, having, in combination, a die and cutting block for cutting blanks in rows, feeding means for advancing the stock, a pair of stop fingers adapted to project into the path of advance of the stock, one of said stop fingers being in advance of the other of said fingers to engage the stock in line of previously cut row of blanks to insure that the stock will be cut in rows in staggered relation to one another.

12. ,A stock cutting machine, having, in combination, a reciprocatory block, a reciprocatory die, a support for the stock, yielding means for sustaining the support Whereby movement of the block to clamp the stock upon the support will move the sup port to accommodate varying thicknesses of stock, and means for reciprocating the die and block.

13. A stock positioning means comprising, a support, an edge gage upon the support for guiding the stock, feeding means for advancing the stock, and stop fingers for limiting the advance of the stock, one of said stop fingers being adapted to engage the stock in the line of the present cut, and another of said fingers adapted to engage the stock in the line of a previous cut to thereby insure a staggered relation of the blanks in adjacent lines of cuts.

14. A stock cutting machine, having, in combination, stock positioning means comprising, feeding arms for advancing the stock, a feeding lever normally having a feed movement greater than the distance through Which the stock is to be advanced, a stop finger to gage the advance of the stock, and means connected with the feed lever to take up the excess movement thereof after the stock has engaged the finger.

15. A stock positioning device comprising, feeding arms for advancing the stock, a reciprocatory block for supporting the arms, a feed slide attached to the block, a feed lever, having normally a greater feeding movement than the required advance of the stock, connected With the block, a stop finger to determine the extent of advance of the stock, locking mechanism connecting the stop finger With the slide, means to ad-.

Vance the feeding arms to actuate the stop finger and lock the slide, and means to take up excess movement of the feed lever after the slide has been locked.

16. A stock cutting machine, having, in combination, a cutting block, a die for cutting against the block, a table for supporting the stock, feeding arms for engaging and advancing the stock, a slide connected with the feeding arms, locking mechanism mounted upon the slide, a movable stop finger for positioning the stock, operative actuating connections between the stop finger and the locking mechanism, and means to advance the arms to bring the stock into a position to move the stop finger to thereby set the lock and stop the advance of the stock.

17. A stock cutting machine, having, in combination, a cutting tool, a block for the cutting tool, means for actuating the tool, feeding arms for advancing stock, a feed slide for actuating said feeding arms, a feed lever having normally a greater feeding movement than the required advance of the stock operatively connected with the slide, a stop finger for determining the extent of advance of the stock, locking,mechanism connecting the feeding arms with the slide, means for operating the feeding slide to carry the stock against the stop finger to thereby lock the slide, and means to take up the excess movement of the feed lever.

18. A stock cutting machine, having, in combination, a reci-procatory cutting block, a reciprocatory die for cutting against the block, means for actuating the die, an edge guide, feeding means for advancing the stock, stop fingers for limiting the advance of the stock, one of said fingers being adapted to engage the stock in the line being cut, and another of said fingers adapted to engage the stock in the line of a previous cut to thereby insure a staggered relation of the blanks in adjacent lines of cuts.

19. A stock cutting machine, having, in combination, a die, a reciprocatory cutting block, means for reciprocating said block, and means for disconnecting the cutting block to stop the cutting operation while the machine continues in operation.

20. A stock cutting machine, having, in combination, a die, a reciprocatory cutting block, means for feeding stock to the die, a continuously operating cam shaft, means connected with said shaft for operating the cutting block and feeding means, and mechanism to disconnect the cutting block and feeding means from the shaft to stop the cutting operation during the continued oper ation of the shaft.

21. A stock cutting machine, having, in combination, a reciprocatory die, a reciprocatory cutting block, means for reciprocating the die and cutting block, and means to disconnect the cutting block to stop the cutting operation during the continued operation of the die.

22. A stock cutting machine, having, in combination, a cutting block, a cutting die for cutting out blanks from the stock, a plunger sustaining the die, a trimming cutter mounted on said plunger for trimming the died out stock, and means for operating the die and cutter.

23. A stock cutting machine, having, in combination, a cutting tool and a cutting block relatively movable to cut the stock, means for feeding stock across the tool, and means controlled by the advance of the stock for automatically stopping the feed of the stock when it has been advanced a predetermined distance.

24; A stock cutting machine, having, in combination, a die, a reciprocatory cutting block, a sectional edge gage for guiding the stock, one section of said gage being yieldingly mounted and located in the path of travel of said block, and means for reciprocating the block.

25. A stock cutting machine, having, in combination, a die, a cutting block, means to relatively move the die and block to cut blanks from the stock, means for advancing the stock, and a plurality of stops located different distances from the die to engage an uneven forward edge of the stock at a plurality of points as it is advanced by the feeding means to determine the cutting position of the stock.

26. A stock cutting machine having, in combination, a cutting die, a cutting block, and means for intermittently advancing stock in a predetermined position over the die {comprising stock engaging means, a yieldable driving member for said means, a yieldable stop mounted in the line of feed of the stock, and connections between the stop and said means to lock the means from advancing movement when the stock has been brought into engagement with the stop.

27. Stock positioning means for a stock cutting machine comprising a stock engaging device for advancing the stock, a yieldable stop for positioning the stock, yieldable driving mechanism for the stock engaging device, and a connection between the stop and said mechanism whereby the advance of the stock will be stopped when the stop has engaged the stock.

28. A stock cutting machine having, in combination, a die and cutting block for cutting blanks in rows, feeding means for advancing the stock, and a stop arranged in the path of advance of the stock to engage the stock in the line of a previously cut row of blanks to insure that the stock will be cut in rows in staggered relation to one another. i

29. A stock cutting machine having, in combination, cutting means for cutting blanks in successive rows from the stock, feeding means for advancing the stock to said cutting means, and means, against which the stock is advanced, adapted to in sure that the blanks are cut from the stock in rows in staggered relation.

30. A stock cutting machine having, in combination, work cutting means, a stop for positioning the work in definite relation to the cutting means, means for feeding the work and devices to discontinue the feeding movement of the work when it has pressed the work against the stop with a predetermined pressure.

ERASTUS E. WINKLEY.

Witnesses:

BURTON W. GARY, ELsm Pnnss.

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