US1108225A - Trimming-machine. - Google Patents

Description

P. H. PERRY.

TRIMMING MACHINE.

APPLICATION FILED NOV. 3, 1913.

1,108,225. Patented Au 25, 1914.

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UNITED sTATEs PATENT o FIcE.

F EDERICK H. PER-RY, 0EBEVERLY, AssAonUsETTs, ASSIGNOR TO UNITED sHoE MACHINERY coMPAN oE rnrnnsolv, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TRIMM NG-MACH NE.

Specification of Letters Patent. Application filed November 3, 191 3.

Patented Aug. 25, 1914.. Serial No. 798,915.

To all whom it may concern. Q

'Be it knownit-hat I, FREDERICK H. PERRY, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have-invented certain Improvements in I Trimming-Machines, of which the following description, in connectionwith the accompanying drawings,is a specification, like reference characters on the drawings indicating like parts in the several figures. i

This invention relates to trimming 'machines of the characterusedin the manufacture of boots and shoes, and will be herein disclosed as embodied in a machine of the type described in my prior Patents Nos. 1,030,605, granted December 25, 1912, and 1,047,982, granted December 24, 1912. The machines shown in these patents are designed especially for performing the operation known in shoe manufacture as jointing that is, trimming that portion of the edge of a shoe sole between the line of the I heel breast and the point in the shank'at which the usual machine trimming opera tion is stopped. These machines each include a knife arranged to trim along the edge of the shoe sole and a second knife arranged to out transversely into the edge of the sole to detach the chip or shaving formed by the edge trimming knife, these knives being mounted to move alternately to the line of intersection of their paths. It obviously is not essential to have the shaving detached as rapidly as it is formed byjthe edge trim ming knife in cutting along the sole, as in these machines, but ming knife may-be allowed to complete its operation u to the line of the heel breast and the shaving then may be detached. A

edge of the machine arranged in this manner would have some ad-vantagesover. the machines shown in the patents mentioned since itwould require'less frequent'sharpening f the cutting-off-knife and would permit a less accurate adjustment of the knives in their holders,

It is an object of the present invention to devise a trimming machine inwhich the shaving detaching means shall be controlled by the work. In applying this invention to a jointing machine, this control may convenientlybe effected by providing means for positioning a shoe for the jointing operation and utilizing this positioning-means to conslideway for'a block the edge trimtrolthe operation of the detaching means. Preferably, the arrangement is made such that the detaching means is operated only at the breast of the heel of the shoe.

The invention will be readilyunderstood from the following description and the pended claims.

In the accompanying drawings, Figure l is a view in side elevation of a machine embodying the invention;

novel features will be pointed out in the ap- "as Fig. 2 is a plan view of the machine shown in Fig. 1;.Fig. 3 is a,

front elevationof the Figs. 1 and 2; Fig. 1 is a sectional view on the line 4%, Fig. 1; and Fig. 5 is a sectional view on the line 5 5, Fig. 1.

1 A P in the drawings at 2. Bolted to the side of this frame is a bracket 1 carrying a stationary horizontal spindle 6 frame 8 ismounted. Atits rear end this frame is provided with two parallel depending, arms 10 which are machined on their lnner surfaces to provide. between them a which is rotatabl mounted on a stud 12 projecting eccentrically from the end of a rotary shaft 14 that is supported inibearings formed in the machine frame 2 and the bracket 4. This atrangement of parts is substantially like that disclosed in the later patent above men tioned. V

3 The forward end of the rocker frame8 is shaped to forin'a knife holder 16 for the edge trimming knife 18. This holder consists Ora projection depending from the end machine shown, in 1 of the machine frame is indicated on which a rocker of the rocker frame having a dovetailed groove formed in its front face to receive the correspondingly shaped shank of the knife and slotted, as shown in. Fig. 1, to enable the clamping bolt 20 to spring the parts sufficiently to clamp the shank of the knife securely in the holder. It will be evident that, when the shaft 14; is motion will be imparted to the rocker frame 8; by means of the parts 10 and 12, which will cause the knife 18 to oscillate about the. axis of the spindle 6. This knife is provided with right and left cutting edges, as

best shown in Fig. 4, and in operation trims along the edge of the sole forming a shaving which usually must'be detached. For the latter operation two transversely cutting knives are used, one. at each end of the knife '18, arrangedto' chop into the edge of the sole rotated, a rocking and sever the shaving from the shoe. These right and left chopping knives are indicated in the drawings at 21 and 22, respectively; and they are provided with cylindrical shanks adapted to be secured for adjustment both vertically and angularly in knife holders 23 and 24f, respectively, which holders, in turn, are mounted for horizontal adjustment on the ends of their respective operating levers 25 and 26, as best shown in Figs. 1 and2. These leversare fulcrumed on the machine frame at a ,considerable distance from the knife holders and are operated by springs 27 and 28,, respectively, which hold the ends of the levers opposite the'knife holders against ratchet wheels 29' and 30 bothfixed on a short shaft 32 (see Fig. extending transversely through bearings supported in the bracket a above the shaft l-l. The shaft 32 is rotated constantly by means of a worm gear 36 fast thereon which meshes with a worm 38 (see Figs. 1 and 5) on the shaft 1 Each lever 25 is provided with a hardened piece remov: ably secured to the end opposite the knife holder which engages the ratchet wheel and takes the wear to which otherwise the lever itself would be subjected. As the ratchets 29 and 30 rotate in contact with theends of the respective levers and 26 each ratchet tooth operates through engagement with the end of the lever to move the knife at the opposite end of the lever away from the work while the spring throws the lever in 'he opposite direction as soon as the tooth passes, thus giving the knife its operative stroke. Consequently, unless some mechanism were provided to hold the levers away from their ratchets, both chopping knives would be reciprocated constantly.

As above stated, the operation of the knives 21 and 22 is controlled by the work, For this purpose, and also for the purpose of aiding the workman in positioning the shoe for the jointing operation, right and left heel breast stops ll and 42 are provided. These stops are adj ustably secured by screws to the under side of a sliding latch 4:4: that is supported by having its ends mounted in holes formed in ears 4:5 and 16 which are s e cured to opposite sides of an arm extending forwardly from the bracket 41-. Guideways are formed in these ears for the reception of the levers 25 and 26 (see Fig. 4-) and the slide 1 1 is provided with two shoulders 4:7 and 48, respectively, which are arranged to hold the forward ends of the levers in a raised position when the slide is in its nor mal position. At this time, thcreforepthe levers will be held out of contactwith their ratchets 29 and and, consequently, will be stationary. Two leaf springs 4:9. and secured on the outer sides of the respective ears 41:5 and 46 serve to hold the latch 44;

yierlingly in pos tion to lock both levthe line of intersection of their paths.

vers 25 and 26 in their inoperative positions.

The machine is also provided with an adjustable counter guard similar to that employed in the machine disclosed in the later patent above mentioned, consisting of a member 52 adapted to enter the crease between the welt and upper of the shoe and a slide 5-1, on which this member is mounted for vertical adjustment, the slide being supported for horizontal adjustment in the forward end of the arm that projects from the bracket 4:. A screw 56 serves to hold the slide 541 in adjusted position.

From the foregoin description it will now be understood that, when the shaft It is rotated, the edge trimming knife 18 will be reciprocated rapidly; and that the springs l9 and 50 will maintain the latch 4L4: in its normal position in which it will hold both of the levers 25 and 26 out of contact with their ratchets 29 and 30 and, consequently, in their inoperative positions. The workman stands in front of the machine and presents a shoe to the machine with the guide 52 in the crease between the welt and upper and the heel projecting backwardly toward the frame 2. If, for instance, he is trimming the left hand edge of a shoe he feeds the shoe past the knives toward his right so that the heel moves toward the stop 42. During this movement the edge trimming knife 18 will trim along the edge of the sole toward the heel breast until the breast of the heel strikes the stop 4:2 and moves the latch 4:4: far enough to disengage'the shoulder 4:8 from its cooperating lever 26. The motion of the slide Aid is then arrested by a shoulder formed on the under side of the slide, thus preventing any further feeding movement of the shoe. The adjustment of the stop 42 should be such that the shoe will be stopped with the heel breast in alinement with the chopping knife 22. As soon as the latch is moved in the manner described, the lever 26, which is released by this movement, will be operated by its spring 28 to force the knife 22 carried by the forward end of the lever into the edge of the shoe sole, thus causing it to out off the shaving previously formed by the edge trimming knife. Fig. shows substantially the positions of the parts at this time. The knife will be vibrated very rapidly by its spring and ratchet so that it will be given several cutting strokes before the operator can remove the shoe from the machine. Preferably the adjustment of the knives 18, 21 and 22 is such that each pair of coiiperating edges will cut alternately to Gensequently, the heel breast stops, if adjusted to arrest the movement of the shoe with the heel breast in line with the chopping knife, will set the chopping knifeinto operation catch the knife holding of the trimmingv combination with when the edge alinement with the heel breast and will prevent either of the knives from operating behind the plane' of the heel breast. As soon the shoe is removed from the machine the spring 49, sioned by the previous movement of the latch 44-, will return the latch to its intermediate or normal'position where it will lever 26 upon its next downward movement and will prevent any further motion of this knife until the latch is again operated by amovement of the stop 42. v i In trimming the right hand edge of a shoe, the shoe will be held with .the toe pointing toward the left as the operator stands in front breast of the heel will strike the stop 41, causing the same cycle of operations to take place with reference to the trimming instrumentalities for this side of the shoe that has just been described with reference to the opposite set of trimming devices. These heel breast stops are also highly useful in machines of the character described in my earlier patents above designated, in which, as in the present machine, they operate to limit the feeding movement of the shoe with reference to the trimming instrumentalities and to position the shoe for the completion or jointing operation. It will be noted that, since each of the stops consists of an arms may be swung toward and from each other in paths substantially parallel to the path of the trimming knife so that the point at which the shoe will be engaged by the stop and will be positioned thereby may be adjusted along the path of operation of the trimming means; By'arranging these stops so that their shanks extend 'backwardly away from the point at. which they engage the shoe, any interference with the free manipulation of the shoe is avoided, the end portions only of the stops being positioned in the path of movement of the shoe.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of theUnited States is 1. In machine of the class described, the combination with means for trimming the edge of a shoe sole and means for detaching the trimmed material from the sole,'of means arranged to be operated by the shoe forcontrolling the operation of said detaching means.

i 2. In a machine of the class described, the means for trimming the edge of a shoe sole of means normally inoperative fer detaching the trimmed material from the sole, and controlling mechanism for said detaching means arranged to ofthe knife 18 arrives in which has been ten of the machine, and the.

7 arm having its shank secured to the slideet by a screw, the ends of the the heel breast.

4. In a machine of the class described, the combination with a knife constructed to trim along the edge of a shoe sole in front of and adjacent to the heel breast, and mechanism for giving said knife rapid to and fro movements, of a second knife-normally inoperative but arranged to cut transversely into thesole edge substantially in line with the heel breast, and mechanism acting automatically upon the movement of the breast of the heel into alinement with said second knife to set the latter knife into operation.

5. In a machine of the class described, the combination with a knife constructed to trim along the edge of a shoe sole in front of and adjacent to the heel breast, and mechanism for operating said knife, of a second knife arranged to cut transversely into sole edge substantially in line with the heel breast, shoe positioning means arranged to engage the breast of the heel and operating mechanism for said cutting knife controlled by 6. In a machine of the class described, the combination with a knife constructed to trim along the edge of a saoe sole in front of and adjacent to the heel breast, and mechanism for operating said knife, of a second knife arranged to cut transversely into the sole edge substantially in line with the heel breast, a stop arranged to arrest the movement of the shoe beingv trimmed in position for the operation of said transversely cutting knife, operating mechanism for the latter knife and connections between said stop and said operating mechanism for normally preventing said second knife from operating on the work but acting upon the engagement of the shoe with said stop to cause said second knife to cut into the edge of the shoe sole.

7. In a machine of the class described, the combination with means for trimming the edge of a shoe sole, of means normally inoperative for detaching the trimmed material from the sole, and-controlling mechanism for said detaching means arranged to be actuated by the shoe to set the detaching transversely said shoe pos1- means into operation, said controlling mechanism being adjustable to vary the point at which its operation is begun.

8. In a machine of the class described, the combination with a knife constructed. to trim along the edge of a shoe sole, and mechanism for constantly reciprocating said knife, of a second knife arranged to cut transversely into the edge of the shoe sole, constantly operating means for reciprocating the latter knife, and means for normally preventing the operation of said knife by its operating mechanism but arranged to be actuated by the shoe to set said knife into operation.

9. ln a machine of the class described, the comoination with a knife constructed to trim along the edge of a shoe sole, and mecha ni. n for operating said knife, of a second knife arranged to cut transversely into the sole edge, a latch normally operative to prevent said second knife from operating on the work,

and a device connected with said latch and arranged to be engaged by the heel breast of the shoe being trimmed to trip said latch and cause said knife to cut into the work.

10. In a machine of the class described, the combination with a reciprocating knife constructed to trim along the edge of a shoe sole, a second reciprocating knife arranged to cut transversely into the edge of the sole, and operating mechanism for said second knife comprising a member carrying the knife, of a driven device for operating said member, means for yieldingly holding said member in contact with said device, and mechanism for normally holding said member out of contact with said device but adapted to be operated by the work to release said member.

11. in a machine of the class described, the combination with a reciprocating knife havin right and left cutting edges arranged to trim along the edge of a shoe sole, of a pair of transversely cutting knives arranged to cooperate with the respective edges of said edge trimming knife, operating mechanism for said transversely cutting knives, a latch acting normally to hold said knives out of contact with the work, and right and left heel breast steps or 'anged, when on by the work, to trip said latch to permit the corresponding knife to operate.

12. In a machine of the class described,

Gopiea of this patent may be obtained for the combination with means for trimming theedge of a shoe sole in front of and up to theline of theheel breast, of a stop having a part to engage the breast of the heel to position the shoe for the operation of said trimming means, and means for supporting said stop for swinging adjustment to vary the point at which it will position the shoe with reference to the path of operation of said trimming means.

13. In a machine of the class described, the combination with means for trimming the edge of a shoe sole in front of and up to the line of the heel breast, of a stop having a part extending into position to engage the breast of, the heel of the. shoe being trimmed to limit the operation of said trimming means along the sole edge, and means supporting said step for a swinging adjustment of said part in a'direction substantially parallel to the path of said trimming means.

Ll. In a machine of the class described, the combination with right and left trimming instrumentalities arranged, respectively, to trim the right and left edges of a shoe sole in front of and up'to the line of the heel breast, of right and left stops each having a part arranged to engage the breast of the heel of the shoe being trimmed to position the shoe for the operation of said trimming means, and means supporting said stops for swinging adjustment toward and from each other.

15. In a machine of the class described, the combination with means for trimming the edge of a shoe sole in front of and up to the line of the heel breast, of a stop comprising an arm having an end portion arranged to engage the breast of the heel of the shoe being trimmed, and a'shank portion extending backwardly away from said end and mounted for swinging adjustment to vary the point at which said end portion will engage the heel with reference to the path of operation of said trimming means, and means for holding said stop in adjusted position. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK H. kERRY. l/Vitnesses CHARLES E. Gnnsn, JOHN H. MOCREADY.

five cents each, by addressing the Commissioner of Eatents Washington, D. G.

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