US910339A - Welt-skiving machine. - Google Patents

Description

E. E. WINKLEY. WELT SKIVING MACHINE. APPLICATION FILED JAN. 18, 1904.

Patented Jan. 19, 1909.

2 SHEETS-SHEET 1.

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E. E. WINKLEY. WELT SKIVING MACHINE. APPLICATION FILED JAN. 18, 1904.

Patented Jan. 19, 1909.

2 SHEETS-SHEET 2.

Alw a n-oa 0437M? -%1-9@l u, n. c. r": NORRIS pzrsns cm, wasnmarc UNITED srnrns rnrnr enrich ERASTUS E. WINKLEY, OF LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WELT-SKIVING MACHINE.

Specification of Letters Patent.

Patented Jan. 19, 1909.

To all whom it may concern:

Be it known that I, ERASTUS E. VVINKLEY, 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 lVelt-Skiving Machines and I do 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 the same.

In the manufacture of welt shoes it is a common practice to remove a skiving from the lower outer edge of the welt at the shank portions of the shoe in order to reduce at these points the thickness of what is commonly termed the projecting edge of the sole. This operation is usually performed after the welt has been sewed to the insole and upper and before the outsole has been laid. In my prior patent Yov 620,205, dated February 28, 1899, I have disclosed a machine for per forming this operation, and the object of the present invention is to improve the construction, arrangement and mode of operation of the various parts of said machine.

To this end the present invention consists in the devices, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the fol lowing description.

The invention will be clearly understood from an inspection of the accompanying drawings, in which Figure 1 is a view in side elevation of a welt skiving machine embodying the same in its preferred form, Fig. 2 is a detail view in front elevation of the work support, feed wheel, skiving knife and presser foot, illustrating the relative positions of these parts, and Fig. 3is a detail plan view of the parts illustrated in Fig. 2.

The frame of the machine illustrated in the drawings comprises a base portion 1 and a head 2 pivotally mounted at its rear end upon the rear standard of the base and having its forward end received between vertical guides extending upwardly from the front standard 'of the base. The head 2 is thus mounted so as to be capable of a swinging movement in a vertical plane. The head is pressed downwardly by means of a spring 3 coiled around a rod 4 and interposed between an adjustable nut 5 on the rod, and a lug projecting from the head 2 through which the rod 4 passes. The lower end of the rod 4 passes through a lug on the base of the machine and is provided at its lower end heneath the lug with a nut 6. A stop screw 7 mounted in the front portion of the head 2 is arranged to engage a fixed portion of the base 1 to thereby limit the downward movement of the head 2 in substantially the same manner as in the construction described in my prior patent above referred to.

The machine is provided with a work support shaped to enter the crease between the upper and welt of a welted shoe and support the welt in position to be acted upon by the skiving knife. This work support is indicated at 8 and is of substantially the same shape as the work support disclosed in my prior patent, being frusto-conical in shape and being arranged to rotate upon a vertical axis with the base of the cone in a horizontal plane. This work support is journaled upon the outer end of a slide 9 which is mounted in a horizontal guideway in the base 1 of the machine. The slide 9 is capable of adjustment in its guideway and is secured in adjusted position by means of a clamp 10 and clamping bolt 11. An adjustable stop screw 12 mounted in a projection from the base of the machine and arranged to bear against the rear end of the slide serves as a means for determining the position of the slide.

For feeding the welt against the skiving knife, a feeding roller is provided, as in the machine disclosed in my prior patent, but this feed roller is arranged in a different position and acts upon a different part of the shoe. The feed wheel is indicated at 13 and is secured to the outer end of a shaft 14 journaled in hearings in the head so that the feed roll is yieldingly pressed against the work by the action of the spring 3. To the rear end of the shaft 14 is secured a gear 15 which meshes with a pinion 16 upon the driving shaft journaled in the base of the machine and provided with the driving pulley 17. A constant rotation is thus imparted to the feed wheel from the driving shaft. In the construction disclosed in my prior patent, the feed wheel is arranged to bear upon the welt in advance of the skiving knife, and not only acts to feed the welt but also to hold it down against the work su ort in position to be acted upon by the slfiving knife. In the present machine the feeding wheel is arranged at one side of the work support so that it bears upon the junction of the welt with the upper and insole, which portion of the shoe is usually termed the inseam.

The skiving knife is located in substantially the same position as in the machine of my prior patent and is indicated at 18. This skiving knife consists of a disk-shaped plate provided with a central stud which 15 secured by means of a split clamp upon a knife carrier 19. By turning the disk in the clamp the edge of the knife can be adjusted in the direction of feed to bring the cutting edge into the proper position and to compensate for the wearing away of the knife in regrinding. In addition to this adjustment of the knife, the knife can also be adjusted angularly to change the inclination of the bevel produced on the wall; and can be adjusted vertically for operation upon welts of different thickness and to regulate the thickness of the skiving removed. To these ends the knife carrier is adjustably secured in a segmental guideway formed in a plate 20 which issecured so as to be capable of a vertical adjustment on one of the guides for the front end of the head 2. The knife carrier is held in adjusted position on the plate 20 by means of a clampmg screw 21 passing through a slot in the plate and screwing into the knife carrier. The plate 20 is adjusted vertically by means of an adjusting screw 22 passing through an overhanging flange on the plate and bearing against the top of the guide for the head and is secured in adjusted position by means of a screw passing through a vertical slot in the plate.

In order to hold the welt down against the work support in position to be properly acted upon by the skiving knife, a presser foot is provided arranged to bear u on the welt in front of the skiving knife an at one side of the feed roll. This presser foot is indicated at 23 and consists of a plate, the front pertion of which bears upon the welt and the rear ortion of which rises and passes over the s iiving knife as is clearly shown in Fig. 2. The presser foot is provided with a vertical shank which passes through a bearing upon a bracket 24. secured to the plate 20 by means of a screw 25. The shank of the presser foot fits the upper portion of the earing in the bracket 24, the lower portion of the bearing being enlarged to receive a cup 26 secured to the shank of the resser foot. A spring 27 coiled around the siank of the presser foot and interposed between the shoulder formed by the enlarged portion of the bearing and the bottom of the cup forces the presser foot yieldingly against the welt. The downward movement of the presser foot under the force of the spring is limited by means of adjustable stop nuts 28 upon the upper end of the presser foot shank. To

prevent the shank of the presser foot from turning in its bearing, a pin 29 projects laterally from the shank through a slot in the bearing.

The machine is designed to operate upon a welted shoe after the welt has been secured to the upper and insole and before the outsole has been laid. In the operation of the machine, the welt is inserted between the presser foot and work support, the edge of the work support entering etween the upper and the welt, and thus serving as a guide for the shoe, and the feeding wheel bearing u on the inseam. The rotation of the feed wffeel forces the welt against the skiving knife which removes a skiving from the lower outer edge of the welt. During this operation the welt is pressed against the work support by the presser foot and held in osition to be properly acted upon by the s iving knife. The presser foot extends close up to the cutting edge of the knife so that there is no liability of the welt being displaced before being acted upon by the knife. The pressure eX- erted by the presser foot is suflicient to keep the welt in position but allows the shoe to be manipulated so as to cause the knife to act properly u on the welt at the curved shank portions of the shoe. The feeding wheel 13 being mounted in the head 2 is pressed against the work with sufficient force to firmly engage and feed the'same, and as it does not extend across the welt but bears upon the inseam does not interfere with the proper manipulation of the shoe during the skiving operation.

It will be understood that the specific constructions illustrated in the drawings and above described embody the present invention in its preferred form only and that the invention can likewise be embodied in other constructions and arrangements.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States. a

1. A welt skiving machine, having, in combination, a welt support arranged to sup ort the welt of a welted shoe, a skiving rnife arranged to skive the lower outer edge of the welt, a presser foot arranged to bear upon the welt in front of the skiving knife and a feed wheel arranged to bear upon the shoe at one side of the presser foot, substantially as described.

2. A welt skiving machine, having, in combination, a welt support arranged to support the welt of a welted shoe, a skiving knife arranged to skive the lower outer edge of the welt, a feed wheel arranged to bear upon the inseam, and a presser foot arranged to bear upon the Welt in front of the skiving knife, substantially as described.

3. A welt skiving machine, having, in combination, a skiving knife arranged to skive the lower outer edge of the welt, means for supporting the welt of a welted shoe and for feeding the welt against the skiving knife, and a presser foot arranged to bear upon the welt in front of the skiving knife, and to eX- tend over the cutting edge of the knife substantially as described.

4. A Welt skiving machine, having, in combination, a Welt support arranged to support the welt of a Welted shoe, a skiving knife arranged to skive the lower outer edge of the Welt, a presser foot arranged to bear upon the welt in front of the skiving knife, and a feed Wheel arranged above and at one side of the work support to bear upon a portion of the shoe other than the welt, substantially as described.

5. A welt skiving machine, having, in combination, a welt support arranged to support the welt of a Welted shoe, a skiving knife ar ranged to skive the lower outer edge of the welt, a presser foot arranged to bear upon the welt in front of the skiving knife, and means engaging a portion of the shoe other than the Welt for moving the shoe to feed the Welt against the skiving knife, substantially as described.

In testimony whereof I afiix my signature, in presence of two witnesses.

ERASTUS E. WINKLEY.

Witnesses:

HORACE VAN EVEREN, FRED O. FISH.

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