US2131845A

US2131845A - Means for operating upon the heelportions of shoes

Info

Publication number: US2131845A
Application number: US40287A
Authority: US
Inventors: William H Nutt
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1935-09-12
Filing date: 1935-09-12
Publication date: 1938-10-04
Anticipated expiration: 1955-10-04

Description

' Oct. 4, 1938.

W. H. NUTT MEANS FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Sept. 12, 1935 5 Sheets-Sheet 1 W. H. NUTT Oct. 4, 1938.

MEANS FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Sept. 12, 1955 5 Sheets-Sheet 2 V/VTUR W H MW,- 7

@ct. 4, 193a -r 2,131,845

MEANS FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Sept. 12, 1935 5 Sheets-Sheet 3 z 9a i waif 5% Oct, 4, 1%& I w. H. NUTT MEANS FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Sept. 12, 19 55 5 Sheets-Sheet 4 W. H. NUTT Oct. 4, 1938.

. MEANS FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Sept/'12, 1935 v 5 Sheets-Sheet 5 Inv llillIl-HHHHHK Patented Oct. 4, 1938 MEANS FOR OPERATING UPON THE HEEL- PORTIONS OF SHOES William H. Nutt, Beverly, Ma'ss., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application September 12, 1935, Serial No. 40,287

21 Claims.

This invention relates to the performance upon the heel portions vof shoes of such operations as the attachment. of heels thereto; A divisional application for improvements in lasts was filed in the United States Patent Office on January 21,

1937, Serial No. l2l,625.

In attaching heels, and especially those of wood, a recognized practice is to operate through a passage in the cone of a last within a shoe to be heeled to drill an opening through the heelseat of the shoe into a'heel clamped thereon, countersink the insole-material about the drilled opening, insert a screw in the last-passage, and finally set the screw in place with a screw-driver to draw the heel-seat and the cup of the heel together. An adhesive is customarily applied between the attaching surfaces. Difficulties are encountered in such a procedure. The last-passage must be of suflicient diameter to admit the head of the screw. Because of the sizeof the passage andthe consequent tendency of the drill and the point of the screw to enter the work out of correct axial alinement, it is desirable to have some centering means by which both are held in their true paths. Since, however, the drill and countersink and the screw-driver must rotate, in-

jury by these tools to a screw-centering device is liable to occur through wear or by breaking.

An object of my invention is to insure the correct positioning of the too-ls and of the fastening for insertion without endangering the means by which said fastening is positioned. To this end, I employ a last adapted to enter a shoe and to co-operate with a support to clamp the work for the operations upon it, said last having a passage opening through the heel-seat-surface. The lastpassage contains a fastening-centering device, preferably provided with yieldable arms extending into proximity to the opening, and movable through the passage is rotatableoperating means having a portion which may be held against rotation'by the centering'device. The operating means may be a drill and countersink by which the heel-seat and heel are prepared to receive a screw-fastening and a screw-driver by'which said fastening is inserted in the work. These operating means are shown herein asmounted on a frame, to a support upon which the'last clamps the work. The operating means, whether the drill and countersink or the screw-driver be considered, preferably consists of two concentric members, the outer of which is in the form of a sleeve held against rotation by the centering device while the inner is acting, For the drill and countersink, the latter furnishes the initially stationary member, it thereafter being given its op-,

lieved .to be patentable novelty irrespective of their particular use as herein described. The centering device, which may be termed a quill, is shown as mounted in the last-passage and held against longitudinal displacement by one or more projections from it, these projections either entering depressions in a last-thimble or extending between the end of the thimble and a sleeve threaded into the opposite extremity of the passage.

The accompanying drawings illustrate a particularform of the invention, with two arrangements of the mounting of the last-quill. In these drawings, Fig. 1 presents in broken perspective theientire apparatus;

Fig. 2 is a central vertical section through the drilling and countersinking mechanism, the tools being partially inserted in the last-passage; Fig. 3, a perspective view of the quill used in the last of Fig. 2;

Fig. 4, a broken perspective of the sleeve for securing the quill in the last-passage; r

Fig. 5, a View similar to Fig. 1 at the time of completion of the drilling and countersinking operations;

Fig. 6 a perspective View of the drilling and countersinking mechanism;

Fig. 7, a view similar to'Figs. 2 and 3 but showing the screw-inserting mechanism;

Fig. 8, a detail in perspective of. the screwdriver and its co-operating sleeve, these elements being separated; I

Fig. 9, a central, vertical, longitudinal sectio through the heel-end of a last provided with a quill differing from that of the preceding figures;

Fig. 10, a perspective view of the quill of Fig. 9; and V Fig. 11, a similar view of the last-thimble by which the quill is retained in place.

The apparatus illustrated in Fig. 1 is organized-generally as is that disclosed in Letters Patent of the United States No. 1,826,723, Bertrand, October 13, 1931, and designed for attaching heels to shoes. In this apparatus, a frame It) has supports l2 for a shoe S and its heel I-I'. With these supports co-operates a last I4 within the shoe, to clamp it and its heel together by pressure applied to a member I6 contacting with the top of the last-cone and actuated through a yoke I8 by treadle mechanism, not illustrated. A column 20 of the frame carries a motor 22, which, through gearing enclosed in a casing 24, continuously rotates

shafts

26 and 28 arranged for universal movement. These shafts operate, respectively, drilling and countersinking mechanism A and screw-inserting mechanism B.

Referring to Figs. 2 and 5, the last I4 has extending vertically through its cone a passage which at its upper portion may be protected by a thimble 30. Threaded into the lower portion of the passage is a sleeve 32 (Fig. 4) of greater internal diameter than the thimble. Held between the adjacent extremities of the thimble and the sleeve are outward projections 34 from a tubular body 36 of a centering device for a screw or other fastening; As'is best shown in Fig. 3, this device is in the form of a springquill, there being resilient arms 38, which may be three in number, depending from the body 36 in proximity to the heel-seat-opening of the last-passage. When the arms are forced outwardly against the inside of the sleeve 32, the internal diameter of thepassage between them is preferably substantially the same as that of the thimble 30. Another form of mounting for the quill appears in Figs. 9, 10 and 11. Here, a thimble 40 lines the entire last-passage and has in its wall openings or depressions 42. The quill has an extended body 44, a fiange 46 of which lies at the top of the last-cone. Projections 48 are shown as struck out of the body, these being inclined outwardly and upwardly toward the flange. They are so located that when the quill is forced into the last-passage until the flange bears against the top of the'cone, the projections will spring into the openings 42 and lock the elements together, as may be seen in Fig. 9. From the quill-body depend screw-engaging arms 50 which, when expanded, will have an internal diameter similar to that of the body 44, curved ends 52 of the arms then lying in a lower enlargement 54'of the thimble. In either form of the device, the lower ends of the arms converge downwardly and inwardly to normally approach relatively close to each other and, as illustrated in Fig. '7, so contact with the thread of a screw 5 that the point will be positioned substantially at the axis of the last-passage. The head of the screw fits the bore of the thimble of Fig. '7 and the body of the quill of Fig. 9 to move freely therethrough, yet with little lateral play. Therefore, when the screw is dropped into the lastpassage, it will be so retained by the quill-arms that its axis and that of the passage practically coincide. Both the

projections

34 and 48 retain their respective quills 36 and. 44 against disin a socket at the lower extremity of the spindle by. a set screw 64 is the shank of a drill 66, of the proper diameter to produce a hole in the work countersink (Fig. 5)

to receive the screw s. The handle is extended by a sleeve 68 attached to a lug I0 depending from said handle and by a bracket I2. The end of the spindle 60 turns in the upper portion of the sleeve at I4, while rotatable in the lower portion of the sleeve, concentric with the drill, is a sleeve or tube I6, the lower inclined end of which has cutting edges I8 furnishing a countersink. Below the sleeve 68, thecountersink-tube 16 has a bearing in a slide 80, which is guided for movement longitudinally of the handle by a tongue-and-groove connection 82 with the sleeve and by a rod 84 passing through and operating in an angular end-portion of the bracket I2. The countersink-tube is compelled to move longitudinally with the slide while free to turn therein by

collars

86, 86, fast on the tube at opposite sides of the slide. A spring 88 surrounds the rod 64 and urges the slide and countersink-tube down to an extent determined by engagement with the bracket I2 of a head 90 upon the rod. When this relation exists, the tube I6 is so yieldingly held that the point of the drill 66 is just at the countersinking surface I8. At the same time, a toothed clutch-surface 92 at the upper end of the countersink-tube is held spaced from a like surface 94 at'the lower end of the spindle-portion I4, by a distance approximating the depth which the drill is to enter the work. Fulcrumed on the handle 62 is a hand-lever 96 normally so held by a spring 98 that a roll I00 rotatable upon it below the fulcrum-point is above a retaining projection I02 from the slide 80. With the elements thus related, the drill and countersink are latched together with the clutch members separated, as shown in Fig. 2.

The operator, grasping the handle 02 but leaving the lever 96 in its latching position, introduces the

tools

66 and 16 into the thimble 30 of the last.I4 by which the shoe S and heel H are clamped together upon the supports I2. The countersink having no driving force applied, save through the slight frictional engagement of the continuously rotating drill, upon contact with the arms 38 of the quill is held by these against rotation and presses them back against the inner wall of the sleeve 32. As the force applied to the quill-arms is therefore only longitudinally thereof, without the rapid rotary effect which would be imparted by a tool driven by the spindle, the quill is but little affected and will require only infrequent renewal. Were the rotary contact permitted, the quill-arms would be subjected to much wear, and, if they were caught at the edges by the tool, might be torn off. The descent of the tools will be stopped by the contact of the countersink with the insole of the shoe. When this is felt by the operator, he will unlatch the handle from the countersink by actuating the lever 96 with the fingers of the hand grasping the handle, thus withdrawing the roll I00 from above the slide-projection I02. The lever may be released after the roll has reached the under side of the projection. Downward pressure upon the handle will lower the drill through the counter- 'sink, which serves to center and guide it axially of the last-passage. The drill will therefore enter the insole substantially at right-angles to its surface. The spring 88 is compressed during this movement. The drill bores into the heelseat-material and heel until the clutch-teeth 94 upon the spindle engage the teeth 92 upon the The travel will be such that the hole approaches the desired depth for the screw. Because of the clutching together of the continuouslyrotating spindle and the countersink, the latter will be driven and will produce'a depression in the heel-seat-material in which the head. of the screw may lie, the drilling of'the opening being simultaneouslycompleted'.

The rotation of the countersink-tube in contact 7 To limit the action of both tools, the leverfifi may carry' one portion of astop device, as a screw I08,threaded vertically through it and locked by. a set-screw 'IIU. The other stop-element-may be "furnished by a small standard- H2 rising from the frame It! at the outer-[side of firework-supports l2. The stop-screw is so 'setthat when it engages the companion element; the depth of both the drilling and countersinking will be determined. The operator then raisesthe handle 66 and actuates the by a hook H4 near the rear of the frame. Having prepared the shoe and heel as just described, the operator dropsa screw s point down into the last-passagev (1 ig."7).. Here, its head will engage the wallzof the thimble with its lower threaded portion" resting upon the quill- 'arms 38, it thus being axially alined with the passage and with the drilled opening in the Work.

The point therefore cannot catchdn the'insolematerial, and the slot in the screw-head will be properly positioned to receive the screw-driver which is to insert" it.

The inserting mechanism B is shown in detail in .Figs. 7 and 8. 1 The" continuously rotating shaft 28 is connected to aspindle I H5, at the lower extremity of which is formed a screwedriver-bit Surrounding this, portion I20, andbearing at its innerend against a shoulder 122, is a sleeve I24 having the same external diameter as the spindle H6. Studs I26, I26-extend through the sleeve and, entering'a groove I28 of the spindle, retain said sleeve against outward displacement. The sleeve extendsbeyon'd the spindle-portion I20,leaving only the bit I I8 projecting. The sleeve l24actsiduring the insertion of the screw-driver as did the sleeve J6 of the mechanism A, so that it' is. held against rotation by engagement with the quill-arms: 38, pressr .ing these back'without appreciableywear or distortion when the screw-driver-bitl I8 enters the -slctin the screw and inserts it in thehole drilled in the heel. A like protection is afiorded the quill upon the withdrawal of the screw-driven.

As in the Bertrand patent previously referred to, a clutch I38 maybe interposed between the shaft 28 and the spindle 'I I6 so the resistance set up upon the complete insertionpf the screw will cause the clutch to slip and thus stop the application of the driving force to the work. A hook I32 is shown upon the frame for holdingthe mechanism B in inactive position.

When, in this specification, such a phrase as *"rneans forinitiating the rotation of said tools successively occurs, it isto be understood that thiscovers equally the initiation of rotation of the tool first actuated, either at the beginning of a period of use, to continue uninterrupted through succeeding operating cycles, or initiation at the beginning of each operating cycle included The lower end of thespindle at I20 is'of reduced diameter.

in such period, with intermediate intervals ofrest.

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

i 1. Means for operating upon the heel-portions of shoes comprising a last having a passage opening throughthe heel-seat-surface, a fasteningcentering device secured in the passage at the heel-'seat-end and provided with yieldable arms extending in proximity to the heel-seat-opening of the passage, and-rotatable operating means movable through the passage and having a portion constructed and arranged to be held against rotation by engagement with the centering device.

2. Means for operating upon the heel-portions of shoes comprising a last having a passage openingthrough the heel-seat-surface, a fastening-centering device secured in the passage at the heel-seat-end and provided with yieldable arms extending in proximity to the heel-seatopening of the passage, a concentric inner drill and outercountersink movable through the lastpassage, and means for rotating the drill and countersink, said countersink being initially free to be held against rotation by the centering device. I

3. Means for operating upon the heel-portions of shoes comprising a last having a passage opening through the heel-seat-surface, a fastening-centering device secured in the passage at the heel seat-end and provided with yieldable arms extending in proximity to the heel-seatopening of'thepassage, a rotatablescrew-driver movable through the last-passage, a sleeve surrounding the screw driver and free to be held against rotation by'engagement with the centering device, and means for rotating the screwdriver. 4. Means for operating upon the heel-portions of shoes comprising a frame, a shoe-support thereon, a last between which and the support a shoe may be clamped, said last being provided witha passage through its cone and with a screwcentering quill at the heel-seat-end of the passage, means for applying pressure to the last to clamp the work, and drilling and countersinking to turn relatively about said spindle, the sleeve extending in proximity to the end of the spindle at the bit to enter the last-passage therewith for contact with the quill, and means for rotating the spindle.

6. In an apparatus for operating upon a heel through a last having a passage provided at one extremity with a spring-quill, operating means comprising a spindle having at its end a reduced portion at the inner extremity of which is a shoulderand at the outer extremity of which i is a screw-driver-bit, a sleevesurrounding the reduced portion of the spindle and being substantially equal in external diameter to the body of the spindle, the sleeve abutting against the shoulder and extending in proximity to the end of the spindle at the bit for engagement with the quill and means for preventing longitudinal displacement of the sleeve upon the spindle while permitting it to rotate relatively thereto, and means for rotating the spindle.

7. In an apparatus for operating upon a heel through a last having a passage provided at one extremity with a spring-quill, operating means having an inner drill and an outer countersink arranged concentrically, means for applying power to rotate the drill, the countersink being arranged to enter the last-passage and to be held initially against rotation by the quill, means for rotating the drill, and means for communicating the rotation of the drill to the countersink.

8. In an apparatus for operating upon a lasted shoe through a last-opening, two concentric cutting tools, one of which is movable through and beyond the operating end of the other to penetrate the work, and means made effective during themovement for communicating the rotation of such movable tool to the other tool.

9. In an apparatus for operating upon a lasted shoe through a last-opening, two concentric tools each adapted to enter said opening, one of which is movable through and beyond the operating end of the other to act upon' the work after the passage of such other tool through the opening into contact with the work, means to impart feeding movements to said tools by a single movement of said means, and means for initiating the rotation of said tools successively.

10. In an apparatus for operating upon a lasted shoe through a last-opening, two concentric tools, one of which is movable through and beyond the operating end of the other to act upon the Work, and means for rotating one of said tools continuously and the other intermittently.

11. In an apparatus for operating upon a lasted shoe through a last-opening, two concentric tools, means for rotating the inner tool continuously, and means for intermittently communicating the rotation of the inner tool to the outer tool.

12. In an apparatus for operating upon a lasted shoe through a last-opening, two concentric tools arranged to enter the last-opening, means for rotating one of the tools While the second is non-rotatable during the entrance of the tools into the last-opening, and means by which the second tool is rotated after both are within the last-opening.

13. In an apparatus for operating upon a lasted shoe through a last-opening provided with a spring-quill, a countersink arranged to enter the last-opening and contact with the quill, a drill situated normally with its operating portion within the countersink and movable longitudinally of its axis to be projected into operating relation upon contact of the countersink with the shoe, and means for rotating the drill and countersink.

14. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a tool carried by the spindle, a second tool rotatable upon the spindle and surrounding the first tool, cooperating clutch members upon the spindle and outer tool, and means for holding the clutch members normally separated.

15. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a tool carried by the spindle, a second tool rotatable upon the spindle and surrounding the first tool, co-operating clutch members upon the spindle and outer tool, means for holding the clutch members normally separated, and means carried by the handle for controlling the engagement of the clutch members.

16. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a tool carried by the spindle, a second tool rotatable upon the spindle and surrounding the first tool, co-operating clutch members upon the spindle and outer tool, and a lever fulcrumed upon the handle and normally retaining the clutch members separated, said lever being movable by the operator to allow the engagement of the clutch members.

17. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a tool carried by the spindle, a second tool rotatable upon the spindle and Surrounding the first tool, cooperating clutch members upon the spindle and outer tool, and a lever fulcrumed upon the handle and normally retaining the clutch members separated, said lever being movable by the operator to allow the engagement of the clutch members and having means to limit the advance of one of the tools.

18. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a drill fixed in the spindle, a' bearing member mounted to move upon the handle longitudinally of the spindle, a countersink rotatable in the bearing member and surrounding the drill, clutch members for rotating the countersink from the spindle, and means movable upon the handle and engaging the bearing member for controlling the engagement of the clutch members.

19. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a drill fixed in the spindle, a bearing member mounted to move upon the handle longitudinally of the spindle, a countersink rotatable in the bearing member and surrounding the drill, clutch members for rotating the countersink from the spindle, a spring interposed between the handle and bearing member to normally separate the clutch members, and means movable upon the handle and engaging the bearing member for controlling the engagement of the clutch members.

20. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a drill fixed in the spindle, a bearing member mounted to move upon the handle longitudinally of the spindle, a countersink rotatable in the bearing member and surrounding the drill, clutch members for rotating the countersink from the spindle, and a lever fulcrumed upon the handle and having a portion for contact with the bearing member.

21. In an apparatus for operating upon shoes, a handle, a spindle rotatable thereon, a drill fixed in the spindle, a bearing member mounted to move upon the handle longitudinally of the spindle, a countersink rotatable in the bearing member and surrounding the drill, clutch members for rotating the countersink from the spindle, a lever fulcrumed upon the handle and having a portion for contact with the bearing member, and a screw threaded through the lever for contact with a relatively fixed element.

WILLIAM H. NUTT.