US1283341A - Pneumatic upper-leather-cutting machine. - Google Patents

Description

S TS M. J. &'J. L. SLOAN. `PNEuNIATIc UPPER LEATHER CUTTING MACHINE.

APPLICATION FILED FEB. a. |911.

Patented oct. 29, 1918.

3 SHEETS-SHEET 2- /N VE/V TOR W/T/VESSES VIVI. I. i I. I.. SLOAN. PNEUMATIC UPPER LEATHER CUTTING MACHINE.

' APPLICATION FILED FEB. 8, |917. 1,283,3M. Patented 001;. 29, 1918.

3 SHEETS-SHEEI 3.

WITNESSE'S mi non :un: u.; rumumn. uumucrou. n c

MICHAEL J. SLOAN, 0F IBINGHAMTON, AND TOSPH L. SIiOAN, OF ENDICOATT, NEW YORK.

PNEUMATIG UPPER-LEATHER-CUTTING MACHINE.

Speccaton of Letters Patent.

Application filed February 8, 1917. Serial N o. 147,346.

To all 'whom t may concern:

Be it known that we, MICHAEL J. SLoAN and J osnrH L. SLoAN, citizens of the United States, residing at Binghamton Vand Endicott, respectively, in the county of Broome and `State of New York, have invented certain new and useful Improvements in Pneu matic Upper-Leather-Cutting Machines, of which the following is a specification.

The present invention relates to cutting and punching machines and has particular reference to a machine for cutting or stamping sheet material, such as leather or the like, more particularly for use in the manufacture of shoes.

An object of the present invention is` to provide a machineof this character which is automatic in operation; which may be con; trolled by compressed air or the like; which is provided with a plurality of cutters and means for selectively operating the cutters; and to provide the machine with means for automatically removing the blanks when cut and stacking them in their respective piles within a suitable receptacle.

The invention also aims at the provision of means in a machine of this character by which the cutters may be adjusted longitudinally and laterally as well as selectively over the sheet to be stamped for utilizing the entire sheet without waste, and so that the cut' ters may be manipulated to obtain the greatest number of blanks from a sheet of given size.

The above, and various other objects and advantages of this invention will be in part described, and in part understood, from the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawings, wherein:

Figure 1 is a plan view of a machine constructed according to thel present invention.

Fig. 2 is a transverse vertical section taken through the same intermediate the ends thereof.

Fig. 3 is a fragmentary, enlarged section taken vertically and transversely through the operating means, showing one of the cutters in position to Vbe actuated thereby.

Fig. 4 is a fragmentary enlarged section taken through the controlling valve for admitting an actuating fluid to the operating means.

Referring to these drawings, the machine in its present embodiment comprises a horizontal frame supported upon legs X, the

pair of closely spaced apart guide rods A upon which is supported a carriage comprising the block sections 4 and 5 connected together by rods 6. The blocks 4 and 5 carry rollers C bearing on the guide bars A for supporting the carriage and facilitating transverse adjustment thereof relatively to the frame. The block 5 of the carriage carries a depending shaft 8, rotatable in the carriage and carrying upon its lower end beneath the carriage a circular frame or support provided with a circular row of suitably spaced apart plungers 9 mounted for vertical movement through the frame 7 and held normally in raised position by springs 10. The upper ends of the plungers 9 are headed to receive impact of an operating device and to receive the upper ends of the springs 10 therebeneath for supporting the plungers.

The plungers are provided with sprocket wheels 11 arranged thereon preferably below the frame 7 and over which is trained a sprocket chain 16 which may be turned by hand for rotating all of the plungers simultaneously. A sprocket wheel 70 meshes with the chain 16 and is carried on the lower end of a shaft 71 adapted to travel with the carriage. Beveled pinions connect the shaft 71 with a hand wheel shaft 72 supported on the cross heads 33, the pinion of the shaft 72 being slidable thereon to follow the carriage. The lower ends of the plungers are provided with cutters in the form of cones 12 of the desired transverse configuration having cutting edges at their lower ends and having therein ejector blocks 13 held extended from the lower ends of the cutters 12 by springs 14 surrounding guide pins 15 connecting the blocks 13 to the plungers.

If desired, counters 40 of any suitable type may be mounted on the frame 7 adjacent the plungers 9 and provided with operating arms 41 lying beneath the heads of the plungers to be actuated thereby when depressed for keeping tally upon the number of operations of the respective plungers.

EXtendin longitudinally of one of the guide bars is a shaft 55 suitably mounted in the frame and upon which is keyed a longitudinally slidablel beveled gear wheel 54 meshing with a corresponding beveled gear .wheel carried upon the carriage block 5 and which is connected lby intermeshing beveledgear wheels 52 and 53 to the frame supporting shaft 8. The shaft 55 has a spur gear wheel 61 near one side of the frame meshing with a -correspondingly formed gear wheel 61 mountedon a shaft 57 extending transversely-of the frame and mounted in bearings 36 carried on cross heads 33 at the sides of the frame, and which is provided with a thumb wheel 63 on its outerl end for manually turning the shaft. A number wheel 62 is preferably mounted upon the shaft 57 near the thumb wheel 63 by means of which the relative positions of the shaft 57 may be determined. The numbers on the wheel 62 preferably correspond to the cutters or plungers on the frame, and the cutters may be adjusted into a predetermined position over the anvil Y by turning the shaft 57.

The operating means is carried upon the block 4 of the carriage and is adapted to overhang the anvil Y. The operating means comprises a cylinder 3 rising from the block 4 and provided with a piston 25 therein normally urged toward the upper end of the cylinder by an expansion spring 26. The lower end of the spring 26 encircles an impact pin 27 suitably headed to receive the piston 25 thereagainst, and which is normally urged upward by a spring 28 between the head of the pin and the bottom of the cylinder 3. The pin 27 slidably engages through the block 4 and is adapted to move downwardly therethrough.

The block or carriage also carries a controlling valve in the form of a cylindrical valve casing 21 to one side of which is connected a pipe 20 opening into the top of cylinder 3. The casing 21 has a rotary valve therein with an axial port communieating witli a supply pipe Z leading fiom any suitable source of fluid pressure supply.-

The rotary valve has a radial port adapted to open into an exhaust pipe 64 which leads downwardly into a position beneath the carriage and adapted to register at one side of the cutter in operative position to deliver a blast of air transversely beneath the cutter and across the anvil Y. The rotary part of the valve 2l carries a bell crank lever on one end to which an adjacent end of a connecting rod 24a is connected, the opposite end of the rod having pivotal connection with a latch lever 22. rThe connecting rod is mounted in suitable brackets in the block 4 and is preferably spring tensioned at one end to retain the valve in closedposition. To prevent opening of the valve when a cutter is out of line with the operating mechanism the other arm of the bell crank lever has a stop bolt 69 depending therefrom and adapted to engage the upper surface of the frame 7l Theframe 7 has an aperture therein opposite each plunger to receive the stoplrod69 when the adjacent plunger registers beneath the impact pin 27, whereupon the valve may be opened and the apparatus actuated.

rllhe carriage is provided with a handle c which may be supported upon a pair of arms 18 converging laterally from the block 4, and which may be supported in an upwardly inclined position by a brace rod 19 arranged between the outer ends of the arms 18 and an intermediate portion of the cylinder 3. The latch rod 22 extends longitudinally of the arms 18 and is connected to a trigger 23 pivoted tothe handle a so that the trigger may be moved by the finger for actuating the valve 21.

The block 4 of the carriage has pivoted theretoa lever 30, the long arm of the lever extending upwardly and laterally beneath the arms 18 of the handle and being vguided and tensioned in its movement toward and from the handle by spring 31 and its guide bolt, and the arm 30 having a latch bar 32 the nose of which is adapted to enter a notch 334 in the latch bar 22 to lock the valve 21 closed.

The transverse shaft 55, used for adjusting the cutters into position over the anvil is connected at its end opposite to that upon which the gearwheel 6l is mounted to a shaft 55 arranged at the side of the frame, by intermeshing beveled gear wheels as shown in Fig. 1, and the shaft 55 is connected by beveled gear wheels 50 and 51 with a shaft 49 which operates a rotatably mounted receptacle or container in which the stacks of blanks cut are adapted to be deposited. The shaft 49 is connected by beveled gear wheels 47 and 48 to a vertical shaft 45 upon which the receptacle 44 is secured. The train of gearing between the shaft 45 of the receptacle and the shaft 37 for adjusting the cutters is so proportioned as to advance the cutter frame 7 and the receptacle simultaneously in predetermined stepped relation so that the blanks cut by one of the cutters are deposited in a predetermined stack or portion of the receptacle 44. A conveyer 43, preferably in the form of an extensible tube, which may comprise a plurality of telescoping sections as shown, is supported at one end above the receptacle 44 and at its opposite end upon a bracket 42 depending from the carriage to support the mouth of the tube 43 at one side of the cutter in operative position and directly opposite Vthe open end of the exhaust pipe 64. The conveyer tube 43 is adapted to receive the cut blank from the bed plate or anvil Y when the blank is blown into and through the tube by the air exhausting from the pipe 64. The tube 43 is of sectional or flexible construction toAv admit adjustment of the carriage laterally and longitudinally in the frame, and to convey the blanks from the ladjusted position `of the carriage to the receptacle 44 which is mounted upon the lorm bearings for a transverse shaft `37.

The shaft 37 carries pinions 39 upon its opposite ends which mesh with rack bars 34 in the sides of the frame. The shaft? has a hand wheel 39ai thereon, by means of which the shaft may be turned to adjust the carriage longitudinally in the frame The cross heads 33 are provided with vertically spaced apart 1pairs of grooved rollers 35 engaging against the Lipper and lower sides of the shafts 34 to hold the guide rods A to the frame.

The cross head 33 adjacent the spur gear wheel 61 is provided with a pawl 65 engaging the gear'wheell to hold the same `from turning in one direction so that the cutter frame? and the receptacle 44 may be turned in but one direction. The shaft 57 is pro vided with a cylindrical portion or drum between the cross heads 33 and the drum has a spiral row of perforations 58 therein adapted togbe engaged one at a time by a locking fdog 60 slidably mounted in a bracket 59 on the block 4 of the carriage. The dog 60 is yieldingly held against the drum and j yieldingly holds the frame 7 and the parts connectedl thereto in adjusted position.`

' In operation, afsheet of material is placed upon the anvil Y and the carriage is adjusted longitudinally inthe frame by turn-` ing the shaft 37, and isadjusted laterally in the frame by operating thehandle a, to adjust the operating mechanism over vthe desired portion of the sheet'on the anvil. `The shaft v57 is now turned to bring the desired cutter beneath the operating mechanism and the sprocket chain 16 is moved circularly to and'draws the trigger 23 to open the valve.

Qland admit compressed air, or other` suitable fluid medium, into the upper end of cylinder 3. The airforces the piston 25 down against the" impact pin 27, which latter strikes the head or" the adjacent plunger 9 and forces theplunger 'and its cutter 12 downward. v,As soon as the blank has been cut from the sheet, and the triggerrQSjre* leased, the valve`21 is closed by the spring actuate'dconnecting rod 24a, and the pipe 2O is placedin communication with the exhaust pipe 64. The fluid under pressure of the piston 25ands'pring26 isejected from the end of theV pipe 64 toward the mouth of the conveyer tube 43 with suliicient force to dislodge the blank from the lower end of the cutter and the anvil and force the blank through the tube 43 into the adjacent side of the receptacle 44. The carriage may now be .quickly shifted into another position and the cutting operation repeated. The blanks fled to the receptacle 44 are deposited one on topv of the other beneath the outlet end of the conveyer tube. Y, When a different cutter is adjusted into position beneath the operating mechanism the receptacle 44 is correspondingly adjusted to bring the corresponding compartment or stack 46 into position beneaththe delivery end of the tube.

It is of course understood that various changes and modifications may be made in the details of construction and design of the above specilically described embodiment of this invention without departing from the spirit thereof, such changes and modilications'being restricted only by the scope of the following claims What is Vclaimed is:

1. In a blank cutting machine, the combination of a frame, a carriage adjustably mounted in the frame, operating means mounted on the carriage, an anvil arranged beneath the carriage to support a sheet to be cut, means between the carriage and the frame to adjust the carriage into position over the anvil, and a plurality of cutters arranged to be selectivelyv disposed beneath the operating means for actuation thereby.

2. In a blank cutting machine, the combination of a frame, a carriage adjustably mounted in the frame, an anvil arranged beneath the carriage to support a sheet of material, operating means mounted on the carriage, a plurality of adjustable cutters mounted on the carriage for individual adjustment beneath the operating means for actuation thereby, and means for adjusting the angular positions of the cutters with re-y spect to the longitudinal axis of the frame.

3. In a blank cutting machine, the combination of a frame, a` pair of guide bars mounted transversely in the frame and adapted for longitudinal adjustment therein, a carriage adjustably mounted on the guide bars, operating mechanism mounted on the carriage, a cutter frame adjustably mounted on the carriage, a plurality of cutters mounted in the cutter frame, means for adjusting the cutterv frame to vselectively dispose theA nation of a frame, a carriage longitudinally` and laterally adjustable in the frame, operating means on the carriage, a plurality of cutters adjustably mounted on the carriage, meansV for moving the cutters selectively,

one at a time, into registerV with the operat-` ing means to'b'e actuated thereby, an anvil beneath the carriage to support a sheet of Genies oi.' this patent :may be obtained for material, a receptacle mounted on the frame, means connecting the receptacle to the cutters for adjusting the receptacle therewith, and delivery means for removing the cut blank from the anvil to a corresponding portion of the receptacle.

'5. `In a blank cutting machine, the combination of a frame, a carriage adjustably m'ounted in the frame, a 'rotary frame mounted on the carriage, a circular roW of cutters mounted on the rotary frame, means for turning the frame to adjust the cutters, a cylinder rising from the carriage', a spring actuated piston in the cylinder" normally urged into the upper end of the same, a controlling valve on the carriage, a pipe from the valve to the upper end of the cylinder, a source of fluid supply communicating with the valve, said valve being adapted to be opened to admit fluid tothe top of the cylinderl for moving the piston down, an impact pin mounted on the carriage beneath the piston to be `depressed thereby, and means associated with the valve for freeing` the same for operation when a cutter is adjusted into register Vwith said impactpin. Y

G. In a blank cutting machine, the combination ofa frame, a carriage in the frame, a fluid pressure cylinder mounted on the carriage, a controlling valve, a pipe connectingl "the valve to the cylinder for" delivering` fluid to the latter `when the valve is open, anv anvil arranged 4beneath the carriage adapted to support a sheet to be cut, a cutter for adjustment beneath the fluid cylinder to be actuated bythe piston thereof, a receptacle for blanks, a conveyer leading from the4 anvil to the receptacle,and an exhaust pipe leading from the valve to the anvil and opening toward the conveyer adapted to deliver fluid exhausted from the cylinder into the conveyer for feeding cut blanks thereto.

j 7. In a blank cutting machine, the combination of a frame, a movable carriage mounted on the frame, a handle on the carriage for adjusting the same, a fiuid cylinder on the carriage, a valve on the carriage controlling fluid pressure to the cylininder, a trigger on the handleV connected tothe valve for operating it, a cutter frame adjustably mounted on the carriage, a plurality of cutters on the cutter frame, means on the `carriage for j adjusting the cutter frame to selectively register the desired cut-` ter with the fluid cylinder for actuating the cutter, a receptacle mounted on the frame, a connection between the receptacle and the cutter frame for'ad'justing the receptacle therej'vith, and means for delivering cut blanks to the receptacle.

8. na blank cutting machine, the combination of a frame, operating means adjustably mounted on the frame, an anvil be neath the operating means for supporting a sheet of material to be cut, a plurality of cutters arranged in the frame for Vadjustment, one at a time, into line with the operating means, a flexible conveyer tube secured at one end beneath' the operating means and adapted toropen at oneA side of a cutter' when in operative position, a re-V ceptacle fixed to the frame at the opposite end of the conveyer tube, said conveyer tube being adapted to flex during the adjustment of the operating means, and means associated with the operating means for delivering cut blanks from the handle through `the conveyer tube into the receptacle.

9. ln a blank cutting machine, the combination of a frame, a carriage adjustably mounted in the frame, an anvil fixed beneath theframe adaptedto support a sheet of material to be cut, operating means carl a flexibleconveyer tube, secured at one end to the bracket, and opening at theopposite side of said cutter, and a receptacle into which said tube discharges, said operating means being adapted to deliver' fluid under pressure from the cylinder to said pipe for dislodginga .cut blank `from beneath the cut-` ter and delivering the blankthrough said tube into the receptacle. I j j 10. In a blank cutting machine,`the combination of a frame, operating means mount! ed in the frame, a cutter frame adjustably mounted in said first frame, a plurality of cutters mounted on the cutter frame and adapted to be adjusted, one at a time, into position beneath said operating means, an anvil adapted to receive a sheet to be out, a receptacle` having compartments therein corresponding to the number of cutters on the cutter frame, blank feeding means leading from the anvil to the receptacle to de-fA n posit blanks in the compartments of the receptacle, one at a time, and a connection between the cutter frame and the receptacle for simultaneously adjusting the same to den liver blanks cut by the cutters-into their respective compartments inthe receptacle.

In testimony Whereofwe have affixed our signatures in the presence of two witnesses.,A

" MICHAEL J SLOAN.

JOSEPH L. SLOAN. Witnesses:

\ A.`L. SCHWAB,

E. M. Howler. j

ve cents each, by addressing the Commissioner of Patentmi Washington, D. 6"

Images