US2332710A - Method of attaching wood heels to shoes - Google Patents

Description

Oct. 26, 1943. w c, soobc p, JR 2,332,710

METHOD OF ATTACHING WOOD HEELS TO SHOES Original Filed Juhe 26. 1942 Wl E/VTUAZ Patented Oct. 26,1943

1w moses-mic Original application 448,534. 1 Divided an HING Woon HEELS .TO d HOES. William o. Goodchild, J

Beverly, Mass, assign- Machineryf Corporation, Flemington, N. 'J.-, a corporation of-New Jersey June 26; 1942, Serial no. I] this application October Thisinvention relates to' the manufactureof shoes and is described herein with reference to improved methods of attaching heels to shoes on the last. 1

As explained in Letters Patent gSerialfNo. 44853;; filed June-26, 1942'; in my narnjefof whichthe present application is a division; it is,commcnpractice in the manufacture of:womens shoesfto attach a heel to a shoebyf the uselotajpermanent screw or other suitable'fastening drivnthfdugh a passage extending heightwise through the cone of a last upon which the shoe ismotinted." In orderto insure that the screw shall effectively hold the heel'on the shoeit i's desirable thatthe head of the screw bear substantial size. Accordingly, the passage in the last through which the permanent screw is driven has to be of largejdiameter and such a' passage" tends td-weaken the last. Be-

cause 'of the above and other considerations, shoe manufacturers have fb'een very reluctant to drill their lasts to accommodate permanent screws.

The number; ofshoes the heels ofwhich are attached by permanent'screws' driven through lasts, therefore; is negligible ascompa'red with the number 'of shoes menses of which are attached by the 'use of the commercially accepted tempt: rary screw attachers s'uch asdisclosed in United States Letters Patent No. 1,515,258, granted J annary-25, 1927, oh'an application filed in the name of Maurice V. B res'n'aha n. {Ifhe hole in the last for receiving the temporary attaching screw, which hole is approximately /32 of an inch in diameter application for United States 'and has little tendencytowea'kenthe last; is

too small toacc'oinmodate a screw having'a head sufi'icientlylarge to hold'the'sere'w' at the inside figl' gsl ge' l V T It is an objectcflthe present-invention to provide" forr-quickly and effectively attaching heels to shoes mountedupon lastsof the general-construction disclosed I in said Letters'fzPatent No. 1,615,258, "by the use" f 'perman'ent fastenings, without having materially l tdchange the' construction of' s aid a's'ts.' i

With tneabove object in view, 'theinvention 3 in its method aspect comprisesihlserting infa pas sage throughthe cone o'fa last,s'aidpassage hav ing an enlargement at its hlcel-seat end, a fastening with its headin the passage and with a collar surrounding the "shank and'lying in" the passage enlargement, assembling shoe parts on the last with a heel positioned on the'heel seat of the". shoe, and-driving the fastening --througl1 the heel seat-brine shoe and into the heel with the collar resting against the 'in'so1eoi'the shoe.

f form a pocket 42.

comprises a drive screw Bil (Fig'sf 1,

The invention will now be described with refer-i ence to the accompanying drawing, in which Fig. l shows'in side elevation'the heel endof an improved last, partly in sectionjan d an im; proved fastening unit assembled therewith, d'ur ing anearly stage inthe manuiactur'ej of a shoe? Fig. 2 is a side view, partly in section and partly broken away, showing a heelin theprocess of being attached to the shoe; Fig. 3 is an "enlarged side view, partly in sectionfof the fastening unit at the time it is assent-- bled with the last? l 1 Fig. 4 shows the fastening unit of Fig. 3 ate later stage in the manufacture of the shoe; 7

Fig. 5 is a side View, partly in section and artly broken away, showing the shoe in the process of having its heel attachedby the use ofmodified fastening unit; and

Figs. 6 and 'l are'enlarged side Views, partly in secticnfrespectively showing the modified fasfteningunit at the. time it is assembled with the last and after it has been driven into the were.

":The invention is described with reference to attaching a heel 23 (Figs. 2-Qand*5) to a shoe Z2 which is mounted iipona last 2d (Figs.'-1, 2, and ,5) by the use of afa'stening unit 28 (Figs. Band 4) or 28 '(Figs. 6' and 77." The iastening unit 26 V 2, 3 and 4) and a frusto-jconical collar 32, and the. fastening unit 28 comprises a drive screw (Figs. :5,

6 and 7) and fa trusts-conical collar 3 5R The last 2 4,v which is provided with a cylindrical passage 38- approximately /g of an inch in diameter: is identical with the last disclosed in the above: mentioned Letters Patent No. 1,615,258 except for the 'factthat said passage terminates short of the heel seat 40 of'the last which is counterbored to l The pocket 62 may be con sidered as an enlarged extension of the passage 33 or, alternativelvthe passage 38 may be con- 'sidered as terminating at the pocket 42 the bot tom of which constitutes-a "collar-supporting ledge or shoulder 63 (Fig) 1).. The drive screw 35] ofthe fastening unit 26 has a steeply threaded shank M (Figsl 3ja nd 4) and a relatively small headof slightly less diameter than the diameter of the passage 38. The collar 32 is bored to provide a cylindrical passage or hole 43 and is -initially "assembleddn frictio nally binding relation upon the screw 30',

as shown-in Fig. "3, the diameter of the cylin;

-drical'passag'e being approximatelyequal to the '21 r P 2,332,710 7 f during the heel-attaching operation, is engaged by a spherical surface or bottom 52 of the screw head 46. The portion of the shank 44 of the screw 30 adjacent to the head 46 has a diameter somewhat less than that of the cylindrical passage 48 of the collar 32, the construction of the collar and the screw being such that during the heel-attaching operation the collarmay be tilted laterally upon the head of the screw so that the finished shoe a top face 54 of. the collar shall be approximately parallel to the inside face 56 (Figs. 2 and 5) of the heal seat of the shoel The collar 32, which may be described as being. mounted for universal movement upon the head}. 46 of the screw 36, together with said head forms an enlarged head for increasing thehclding powerof the screw at the inside of the shoe. 1 During the manufacture of the shoe the, fastening unit 26, shown in Fig. 3, is dropped into the pocket 42 and the passage 38 of the inverted las t 24 supported upon a last pin 58 and assumes the position shown Fig. 1. construction of the last '24 and the fastening unit 26 is such that when the collar 32 rests upon the shoulder 43Iof the last, the point of; the drive screw 3}], which is secured against falling through the pas- "sage 38 by the collar, is located just'beneath the plane of the heel seat 43 of the last. An insole 60 is then tacked to the bottom o fythe last 24 and the shoe is built up in the usual'manner upon the-lfast, the screw 30 being held in captive relation in the last during such process by the collar 32. After theheel-seat portionof the shoe 22 has been fitted, the heel is clamped againstsaid heel seat by the use of va machine such, for example, as disclosed in United States Letters Patent No. 2334,74 1,- granted March 24, 1936, on an applicationfiled in the-name of driven through theheel seat Of the. Sh 0 and into the heel by a driver 62 to attach the heel to the shoe. 'Duringt-he heel-attaching operation the-screw is forced through the collar 32 until the-ahead 46 of the screw'engages the surface50 ofthe collar, at which time the relationbetween the two members is as shown in Fig. 4.

; -'The axis of the driver-receiving passage 38 is inclined at an angle a (Fig. 1) to a line dis posed .at right angles to the heel-seat face 40 of the last, such angle representing the angle through which the collar 32 swings or tilts upon the head of the screw during the heel-attaching operation, thereby insuring that in the fin ished shoe the top face 54 of the collar 32 shall be parallel to the inside face 56 of the heel seat of the shoe. By providing for tilting movement of the collar 32 upon the head- 46 of the screw 30-, as above described, itwillbe clear that the screw does not have to be driven as far-'into-the insole 60 of the shoe as it would have to be driven were. the collar prevented from tilting on the head of thescrew. In order to insure that in'the finished shoe the head 46 of the screw 30 shall not extend beyondthe top face 54 of the collar 32 ;even though the axis of the. collar be: dis.-

pcsedat a substantial angle; to the axis of the screw, the depth of the recess 56 which houses the head of the screw is somewhat greater than the thickness of said head, as best shownin 1 The fastening unit 28 (Figs. 5, 6 and ,7) may be used in place of the above-described fastening unit 26 toattach the-heel -26to theshoe 22, theshoemaking procedure in both cases being thesame. The head 64 ofthescrew 34 is; of

of the United States is:

Francis L. Brandt, and the screw 30 is then i frusto-conical shape and during the heel-oat taching operation is forced into a complementah ly shapedfrusto-conical portion 66 of a. bore of" the collar 36. The shank '68 of the screw 34,

including the portion of theshankv adjacent to the head .64, 'has a diameterequal'to that of a cylindrical "portion "10 of the' bore of the collar and, accordingly, said collar cannotvtilt to any extent upon the head of the screw during the l heel-attaching operation. v

It will be understood that, if desirable, a conventional screw (not shown) may be substituted for either ofthe screws 30, 34, in which event a rotatable screwdriver (not shown) will be used. 1 r

I-I aving described my invention, what I claim e by Letters Patent as new and desire to scour 1. The method of shoemaking which comprises inserting in a passage through the cone of a last,

said passage having an enlargement at the; heelseat-end, a fastening with its head mine-passage and with aacollar surrounding the shank and lying in the passage enlargemenhasseni- I, bling shoe parts upon the; last with a heel posi- 7 tioned on-the heel seat, and driving the fasten. V

collar resting against thev insole.

2. That improv 4 ing which comprises inserting in. a driver passage of a last a fastening having a smallhead and inserting in a pocket which is formedin theheel seat of the last and in which said passage tering through the heel seat into .the heel with the minates a collar secured-to thev shank of the fags tening, building a shoe up'on theilast, attaching a heel to the shoe by driving the, fastening through the heel seat of the shoe and into the heel, and forcingthe fastening throughthe collar until its head;engagesthesame, the collar and the head of thefastening thereafter fbe ing driven'into the heel seat-of theshoe and fo'rming an enlarged head for effectively holdingzthe fastening 'at the inside of the shoe. 1 3. 'I'hat'improvement in methods of shoemaking which comprises'securinga' heel-attaching fastening having a head and a shank agains escape from a driver passage formed inlaflast' 1 by. utilizing'a collar whichis secured frictionally to the shank of the fasteningrand engages the bottom of a counterbored pocket formed'in-the heel seat of the last,'building a shoe. onthe last, attaching a heel to the shoe by driving the fastening through the heelseat'of the shoe and'into the heel, and simultaneously therewith forcing the fastening, through the collar until thee-head,

of the fastening engages; theficoll'aryformlng therewith an enlarged head which is thereafter 1 driven into the heelseat of the shoe and serves effectively to increase, the ,hjoldingpower of the screw. 1

l 4. That improvement in methcdsnof shoemalr I ing which comprises insertin'ghiii captive relation' in' a. last, whichhas a p'ocke'tiirl itsgheel seat and which has a driver-receiving", passage extending heightwise'through Iits cone from the bottom of the pocket, a unit comprisingia headed metallic 1 fastening and a collar frictionally se- ,cured to the shank f the fastening. bl nd n shoe upon the last, attaching the heel to the shoe by driving-the fastening through the heel seat of the shoe and intotheheel; and simultaneously therewith j forcing the-i1- fastening through the collar until its head engages tne same; the fastening and-the 'collarthen being driven together into the heelwseat said head h I ement inmethods of s own;

taneously therewith forcing the through the collar until the head of the fasv and collar forming an enlarged fastening head which will efiectively increase the holding power.

gages a transverse shoulder in the passage, build ing a shoe on the last, attaching a heel to the shoe by driving the fastening through the heel seat of the shoe and into the heel, and simulfastening tening engages said collar and forms therewith an enlarged head which is driven into the heel seat of the shoe.

6. That improvement in methods of shoemaking which comprises providing a fastening unit including a screw having a small head and a larger collar which is frictionally secured to the shank of the screw, providing a last which has in its heel seat a pocket constructed to receive the collar and which has a passage extending from the bottom of the pocket to the top of the cone of the last, the passage being constructed to receive the screw but not the collar, inserting the fastening unit in the last with the head portion of the screw housed within said passage and the collar and the pointed end portion of the screw housedwithin said pocket, the collar engaging the bottom of the pocket to insure against the screw falling through the passage, building-a shoe upon the last, attaching a heel to the shoe by driving the screw through the heel seat and into the heel, and simultaneously therewith forcing the screw through the collar until the head of the screw engages said collar and forms therewith an enlarged head which is driven into the heel seat of the shoe and effectively secures the screw at the inside of the shoe.

WILLIAM c. GOODCI-IILD, JR.

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