US2026634A - Machine for operating upon shoe parts - Google Patents

Description

Jan. 7, 1936. G HA E 2,026,634

MACHINE FOR OPERATING UPON SHOE PARTS Filed Dec. 29; 1932 Av VENTURE Patented Jan. 7, 1936 PATENT OFFICE MACHINE FOR OPERATING UPON SHQE PARTS George Hazelton, Leicester, England, assignor to United Shoe Machinery Corporation, Paterson, N. J:, a corporation of New Jersey Application December 29, 1932, Serial No. 649,356 In Great Britain January 7, 1932 13 Claims.

This invention relates to machines for operating upon shoe parts and is herein illustrated as embodied in a machine for reducing the thickness of exposed edge portions of the uppers of shoes.

In the manufacture of uppers for shoes it is common practice to fold over the edges of the material which forms the upper proper, i. e., the outer side which is visible in use, but when an upper is lined with leather it is frequently the practice to leave the edge of the lining in its natural unturned state, the lining being secured to the upper by stitching close to the raw unturned edge of the lining in such manner that in unnoticeable the action of thrusting the foot into the shoe is likely to force the extreme edge of the lining inwardly away from the upper thus rendering the shoe less finished in appearance. In -view of the foregoing, it is an object of the present invention to provide an improved machine for operating upon the edge portions of shoe parts such as shoe uppers which without sacrificing any of the characteristic advantages of such machines as heretofore constructed will be operable rapidly to reduce the thickness of edge portions ,ofsuch shoe parts.

-ij'To this end, and as illustrated, the invention provides a machine comprising a hammer and an anvil operable to press portions of the work and means for feeding the work between pressing joperations, together with a gage mounted for movement with the work as it is fed for locating edge portions of the work in operative position relatively to the hammer and anvil. Preferably, and as shown, the gage is located centrally of the faces of the hammer and anvil, one of such members being recessed to receive the gage during the pperationof the members in pressing the work. By means of the construction above outlined, work such as shoe uppers can be fed rapidly through the machine, the gage being effective at all times to control the position of the work so that the pressing operations of the hammer and anvil are limited to the marginal portions thereof with the result that especially compacted edge portions are produced.

Other features of .the invention will be apparent from the following detailed description when "taken in connection with the accompanying drawing and will be pointed out in the claims.

"In the drawing, v

Fig. 1 is a side elevation of the machine constituting an illustrative embodiment of the invention;

Fig. 2 is a plan view of a hammer and anvil mechanism illustrating one form of gage;

Fig. 3 is a side view of the hammer and anvil mechanism;

Fig. 4 is a side view of hammer and anvil mechanism embodying an alternative form of gage; and

Fig. 5 is a front elevation of a portion of the mechanism illustrated in Fig. 4 showing the hammer in depressed position.

Referring particularly to Figs. 1, 2 and 3, the machine comprises a base It] and a work table I2 associated with which there is an anvil l4 and a hammer is arranged for oscillation relatively to each other in pressing work such as shoe uppers. As shown in Figs. 2 and 3 the anvil I 4 is formed integrally with a lever IS. The hammer 16 comprises a lever 22 mounted upon a pivot 24 on the V lever l8 and is provided with a laterally extending striking portion 26 arranged to project over the upper surface of the anvil l4, said portion being secured to the lever 22 by a screw 28. The lever 22 is provided with an arm 30 to which is connected a link 32 arranged to impart movements of the hammer to cause it to oscillate relatively to the anvil M.

The hammer and anvil are arranged for oscillating movement transversely of the machine between oscillations of the hammer relatively to the anvil for imparting feeding movement-s to work gripped between the hammer and anvil by which the work is advanced over the work table I2 by short feed-steps. To this end, the anvil 35 supporting lever I8 is mounted rigidly with a rocking sleeve 34, Figs. 1 and 5, which extends longitudinally of the frame and is secured at its inner end to the hub of an arm 36. The outer end of the arm 35 is pivoted to a link 38 the lower 40 end of which is pivoted to an arm 40 rigid upon a rocking rod 42, the ends of which are journaled in the frame. A second arm 44 on rod 42 is pivotedto the lower end of the stem 46 of a yoke 48 which embraces a cam 59] on a drive shaft 52. Rotation of the drive shaft 52 results in a rocking of both the anvil and hammer transversely of the table [2.

The mechanism for oscillating the hammer l6 comprises a yoke 54 loosely mounted upon the sleeve 34 and embracing a cam 56 carried by shaft 52, the lower arm of the yoke having a stud 58 loosely connected to a link 60 similarly connected to an arm 62 mounted on the hub 64 of an arm 66 which makes screw threaded connection with the rod 32. The arm 62 has lugs 68 and I0 engaging portions of the arm 66 for oscillating the latter. Rotation of the shaft 52 results in the operation of the mechanism just described to effect reciprocating movements of the rod 32 to cause oscillations of the hammer it relatively to the anvil I l. The timing of the cams 53 and 5B is such that thework is held between the hammer and anvil during rocking movement thereof thus to advance the work transversely of the feed table. The mechanisms for producing oscillations of the hammer and for carrying out the work feeding movements of the hammer and anvil are not herein illustrated in detail, and for a more complete description of the construction and operation thereof reference may be had to United States Letters Patent No. 1,702,598, granted February 19, 1929, upon application filed in the name of P. R. Glass.

Means is provided for guiding work positioned on the work table across the surface of the anvil. To this end the anvil is provided with a work edge guide or gage in the form of a curved pin 72 which is secured in a slot in the anvil by a set screw M threaded through a bolt 15 extending through the anvil. The guide pin 12 is curved along the segment of a circle of radiusequal to the distance of the pin from the pivot upon which the hammer oscillates. The outer side of the pin it can, therefore, always contact while the hammer is oscillating with the end of a slot 18 cut in the hammer to receive it. Thus the work guide 72 forms a gage definitely limiting the insertion of the work between the operative faces of the hammer and anvil and is always located in fixed position relatively to the forward edge of the hammer of the pin regardless of the oscillatory movements of the hammer and anvil in feeding the Work.

The operative face of the hammer is plane over that part of its surface which extends on either side of the slot which receives the guide pin 5!. However, in front of the slot the active under surface of the hammer is beveled as shown at 8!! so as to provide a striking portion comprising a surface which will be at a small angle to the operative face of the anvil when the hammer is positioned close to the anvil.

Figs. 4 and 5 illustrate a modified form of construction comprising an anvil 82 having an opening 33 within which is mounted a spring pressed pin 84 which normally extends vertically from the face of the anvil midway between its sides and at a short distance from its front edge (in practice about I /3 of an inch.) This pin acts as a guide or gage for the edge of the work similarly to the pin 12 above described, and its spring 86 allows the pin to be depressed by the contact of the face of a hammer 88 which engages the upper end of the pin which is forced downwardly until such end is substantially flush with the anvil surface when the hammer is down. The forward portion of the operative face of the hammer 88 is provided with a beveled striking portion 9i] the inner edge of which lies adjacent to the gage pin 84 when the hammer is down. As shown, the width of the operative face of the hammer is reduced by bevelling its leading and trailing edges 92 and 94.

-When operating upon some kinds of work it is found desirable that the work be subjected to the action of heat. To this end, as shown in Fig. 4 there is provided a gas jet 96 located adjacent to the hammer 88 in position for heating it.

In the operation of either of the constructions above described a blank such as ashoe upper is placed lining upwards upon the work table and one end of the edge to be pressed is entered between the hammer and anvil with said edge against the gage E2 or the gage 8 Upon operation of the hammer and anvil the work will be fed transversely of the work table step by step by the hammer and anvil and the edge portions will receive a blow at each step. The operator maintains the blank in position with its edge portions in operative relation to the beveled face of the hammer by keeping the edge of the blank pressed against the gage. The gage is so positioned that when the hammer is down the beveled front edge portion only of the latter projects over the work. The work thus receives a blow at a slight angle to the horizontal which efiectively serves to condense the material along the edge with the result that the lining edge presents a finished appearence and offers substantially no projection which would offer resistance to the insertion of a foot in the assembled shoe.

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

l. A machine for operating upon shoe parts comprising hammer and anvil members, means for causing relative movement between the members to produce pressure applying operations upon work presented between the members, means for moving the members together in a direction to feed the work while the latter is engaged by said members, and a gage movable with the members for locating edge portions of the work in operative position relatively to said members.

2. A machine for operating upon shoe parts comprising a work table, hammer and anvil members. means for causing relative movement between said members in producing pressure applying operations upon work presented between them, means for oscillating the members while in engagement with the work to feed the work across the work table, and a gage movable with one of the members constructed and arranged continuously to engage the work during the pressure applying and the feeding operations.

3. A machine for operating upon shoe parts comprising a work table, an anvil associated with the table, a hammer arranged for oscillation relatively to the anvil to produce pressure applying operations upon work positioned upon the table, means for moving the anvil and hammer in a direction to feed the work along the table, and a gage mounted upon the anvil for locating edge portions of the work in operative position-relatively to work engaging faces of the hammer and anvil.

4. A machine for operating upon shoe part blanks comprising hammer and anvil members cooperable to press a blank presented between the members, means for causing the members progressively to feed the blank, and a gage movable with the members for locating edge portions of the blank in operative relation thereto.

5. A machine for operating upon shoe parts comprising an anvil, a hammer mounted for oscillation relatively to the anvil and having therein a slot one wall of which is curved about the axis of oscillation of the hammer, and a gage pin mounted upon the anvil and having a curved portion extending within the slot in engagement with the curved wall thereof.

6. A machine for operating upon shoe parts comprising an anvil, a hammer pivotally mounted for movement toward and away from the anvil and having therein a slot one wall of which is curved about the pivot of the hammer as an axis and having a beveled striking face adjacent to the slot, and a gage mounted upon the anvil and engaging the curved wall of the slot for 10- 5 cating edge portions of the work relatively to the beveled portion of the hammer.

7. A machine for operating upon shoe parts comprising an anvil member, a. hammer member mounted for oscillation relatively to the anvil,

one of said members having an opening in the face thereof within the periphery of the face, and a gage mounted upon one of the members and extending into the opening for locating work with its edge portions in operative position re1a'- 5 tively to operative faces of the members.

8. A machine for operating upon shoe parts comprising an anvil, a hammer mounted for movement relatively to an anvil for producing pressure applying operations upon work posi- 20 tioned upon the anvil, the hammer having an operative face a portion of which is beveled and having a slot adjacent to the beveled portion, and

a gage mounted upon the anvil and extending into' the slot in the hammer for locating edge 25 portions of the work in operative relation to the beveled portion.

9. A machine for operating upon shoe parts comprising an anvil, a hammer pivotally mounted for movement toward and away from the anvil 30 in producing pressure applying operations upon work positioned upon the anvil, the hammer having an operative face a portion of which is beveled and having a slot adjacent to the beveled portion, and. a gage pin mounted upon an anvil and extending into the slot in the hammer for locating edge portions of the work adjacent to the beveled portion of the hammer 10. A machine for operating upon shoe parts 5 comprising an anvil having a work-supporting face, a hammer mounted for oscillation relatively to the anvil, and a work gage mounted upon the face of the anvil for movement heightwise thereof. 10

11. A machine for operating upon shoe parts comprising an anvil, a hammer mounted for oscillation relatively to the anvil, and a work gage resiliently mounted upon the anvil in the path of movement of the hammer.

12. A machine for operating upon shoe parts comprising an anvil having a work-supporting face, a hammer mounted for oscillation relative to the anvil and having an operative face a portion of which is beveled, a retractable gage mounted upon the face of the anvil and so positioned as to locate edge portions of work upon the anvil in operative relation to the beveled portion of the hammer.

, 13. In a machine for operating upon shoe parts, an anvil having a work-supporting face, a ham mer mounted for movement toward and away from the anvil, and a retractable gage mounted upon the face of the anvil and constructed and arranged to engage the hammer adjacent to its operative striking face.

GEORGE HAZELTON.

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