US2332709A

US2332709A - Means for attaching wood heels to shoes

Info

Publication number: US2332709A
Application number: US448534A
Authority: US
Inventors: Jr William Clark Goodchild
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1942-06-26
Filing date: 1942-06-26
Publication date: 1943-10-26
Anticipated expiration: 1960-10-26

Description

w. c. GOODCHILD, JR 2,332,709

MEANS FOR ATTACHING WOOD HEELS TO SHOES Uct. 26, 1943 Filed Jur ze 26. 1942 Patented Oct. 26, 1943 oNirE o; amiss r "or-rice MEANS FOR arr-AGEING WOOD-HEELS To 3 1 2 v TSHOES ,William ClarkGcodehild, rcane, mass, as-{ signer to United Shoe Machinery Gorporatidn. Flemington, N. .L, a corppration ofgNew Jersey application June- 25, 1942', Serial No. 4483534 iciaims. (on. 85 2s. a

This invention relates" to the manufacture of shoes and is described herein with reference to improved means for attaching heels to shoes on thelastp In the manufacture of womens shoes? it is common practice to attach a heel to a shoe by the use of a permanent screw or other suitable fastener or fastening driventhrough a passage extending heightwise through the cone of a last 7 upon which the shoe is mounted. "In order'to insure that the screw shall'effeotively 110101 the heel on'the shoe, it is desirable that the head of the screw be of substantial size! Accordingly, the passage in the last through which thepermanent screw is driven has to beef large diameter and such a passage tends to weakenthelast; Because of the above and other considerations,-shoe manufacturers have been'very reluctant to: drill their lasts to accommodate permanent screws.

Flare-number of shoes the heels of which are attachedby permanent screws driven through lasts, therefore, is negligible ascoI-npared with the numberof shoes the heels of'which are attached by the use ofthe commerciallyaccepted temporary screw attache-rs suchas disclosed; in Uni-ted States Letters Patent No. 1,615,258, granted January 25, 1927-, on an application filed in the name-of Maurice V. Bresnahanl The hole in the last for receiving the temporary attaching screw, which hole is approximately g of' an inch in diameter and has little tendency toiweakra feature the present.

tilt laterally with relation to the fastener as it i forced into the work, said collar being-held against movement upon the head of the fastener by the work when the fastening unit has been driveninto the same. i I 1 a v The various features of the invention will-now be described and appreciated from the following-detailed description read in connection with the accompanying drawing, in which Fig.- lshows inside elevation the heel end of an improved last, partly in section, and an improved fastening unit assembled therewith, during'an early stage in the manufacture of ashoe; Fig.2 is a side view, partly in section and partly broken'away, showing a heel in the process of being attached to the shoe;

"Fig. 3 is an enlarged side view, partly in.section, of the fastening unit at the time it is assembled with thelast;

Fig-(4' shows the fastening unit of Fig. 3 at a later stage in the manufacture of the shoe;

Fig. 5 is a side view, partly in section and partlybroken away, showing the shoe in the process of having its heel attached by the use of .a modifiedifastening unit; and 1 '1 Figs. 6 and 7 are enlarged side views, partly in section, respectively showing the modified fastening unit at" the time it" is assembled with the last and afterit has been driven; into the work.

The invention is. described with reference to attaching a heel 28 (Figs, 2 and 5) to ashoe 22 which is'mounted upon alast 24 (Figs. 1,2 and 5), by the use of a fastening' unit 26 (Figs. 3 and a), or 28 (Figs. 6 and '7). uThe fastening unit 25 comprises a drive screw 3E (Figs. 1, 2, 3 and 4) and a frustoconicalecollar 32,;and the fastening unit 28 comprises a drive screw 3% (Figs..5,

dandfl) and afrustorconical collar 36. The last aheel to a shoe 2. fastening unit comprising a headed metallic fastener or fastening, having, a shank, and a large collar through a bore of which said shank passes, said Collaribeing held'in' frice tional engagementwith a shank portion ofv the fastener which is spaced a substantial distance fromthe head of the fastener andbeing" engaged by the head of the fastener during the'heeI-attaching operation and forming therewithfa large head, portions oftlreshankjo'f the {fastener ad'- jacentto saidheadf being smaller than thgbore of the collarin order that the'ool'lar can freely 24., which isprovided with acylindrical passage tilt-approximately of an inch indiameter, is

bottom, of which constitutes 'a' collar-supporting hasaFsteeply threaded shankl l (Figs. 3 and 4.)

anid arelativelysmallhead 46' of slightly lesserameter than the diameter of the passagetll; The collar His-bored toprovi'de a cylindrical passa e or hole 48 and is initially assembled in frictionally binding relation upon the screw 30, as shown in Fig. 3, the diameter of the cylindrical passage being approximately equal to the diameter of the major portion of the shank of the screw. The

bore of the collar 32 also comprises a concavelar 32, the construction of the collar and the screw being such that during the heel-attach ing operation the collar may be tilted laterally upon the head of the screw so that in the finished j shoe a top face 54 of the collar shall be approximately parallel to the inside face 56 (Figs. 2 and,

5) of the heel seat of the shoe. The collar 32, which may be described as being mounted for universal movement upon the head .46 of the screw, 38,1together with said head, forms an enlarged head for increasing the 1holding power of the screw at the inside of the shoe. v v

During the manufacture of the shoe the fastening unit 265, shown in Fig. 3, is dropped into the pocket Hand the passage 38 of the inverted last 2-; supported upon a lastpin 58 and: assumes the position shown in Fig. '1. The construction of the last 24 and the fastening unit 26 is such that when the collar 32 rests uponthe shoulder 43 of the last, the point, of the, drive screw 30, which is secured against falling through the passage 38 by the collar, is located just beneath the plane of the heel seat 40 of the last. An insole is a then tacked to the bottom of the last 24 and the shoe is built up in the usual manner upon the last, the screw 36' being held in captive reforced through the collar 32 until the head 46 of the screw engages the surface 50 of; the collar, at which time the relation between the two members isas shown in Fig. 4. V

The axis of the driver-receiving passage. 38 is inclined at an angle a (Fig. 1) to a linedisposed 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'duri'ng the heel-attaching operation,

thereby insuring that in the finished shoetthe 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 movementof the collar 32 upon the head at of the screw 30, asabove described, it will be clear that the screw'doe's 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 the screw. In order to insure that in the finished shoe the head A6 of the screw 30 shall not'extend beyond the top face 5 1 of the collar 32 'even though the axis of the "collar be disposedjat a substantial angle to the axis of th'e screw, the

depth of the recess 50 which houses the head of ing unit 26 to attach the heel 20 to the shoe 22; 1

the shoemaking procedure in both cases being the same. The head 64 of the screw 34 is of frustoconical shape and during theiheel-attaching operation i forced into. a complementally shaped frusto-conical portion 66 of a bore of the collar 36. The shank 68 of the screw 34, including the portion of the shank-adjacent to the head 64, has a diameter equal to that of a cylindrical portion I 79 of the bore of the collar and, accordingly, said collar cannot tilt to'any' extent upon the head 4 of the screw during the heel-attachingoperation;

It will be understood that, if desirable, a conventional screw (not shown) may be substituted for either of the screws 35, 34, in which event a rotatable crew driver (not shown) will be used.

The method practicedinattaching wood; heels to shoes by the use of the above fastenin'g unit constitutes the subject matter of, adivisional-application Serial No. 462,281, filed October 16, 1942. Having describedmy invention, what I claim as new and desire to secure 'by Letters Patent of the United States is: M

1. A fastening unit for use in attaching a heel to a hoe comprising a headed metallic fastener heel-attaching operationand forming therewith a large head; portions of the'shank of the fastener adjacentto said head being smaller :than the bore of thecollar in order that .the collar can freely tilt laterally with relation to the fastener as it is forced into the work, said collar beingheldagainst movement upon the head of the fastener by the work .when the fastening unit has been driven into the same. V

2. A fastening unit for"use-inattaching a heel to a shoe comprising-ascrew having a small head the bottom of which is spherical, and a larger collar-whichis mountable upon said head and hasa bore a-portion of which is complemental to. the spherical bottom. of, said head and another portion of .which is substantially larger than the shank of the screw adjacent to said head, the 001-" lar during the heel-attaching operation being tiltable upon the head and-forming with said head a large fastening unit head, said collar'being held against movement upon the head ofthe screwby the work when 'the fastening unit has.

been driven into the same.

3. A fas'tenin'g unit for use in attachinga heel to a shoe comprising a screw having a head the bottom of which is spherical, and a larger collar which is held'frictionally to'the shank of the screw' and has an opening comprising a concave spherical face complemental to thespherical bottom oif said-screw head and a passage whichis larger than the shank of'the screw adjacent to said head, the screw during the heel-attaching. operation being forced through the collar until the spherical'bottomof its head engages the con- I, cave spherical face of the collar, the collar being 1 tiltable [upon said. screwf head during the heelattachingieperation and together with the screw head constituting.a largeffastening unit head, i sa d collar being held againsthiovement upon'the collar to tilt laterally upon the screw head during the heel-attaching operation and thus'insuring that in the finished shoe an upper face of the collar shall be parallel to the inside face of the heel seat of the shoe irrespective of the angle at which the screw i driven into said heel seat, said collar being held against movement upon the head of the screw by the work when the fastening unit has been driven into the same.

WILLIAM CLARK GOOD CHILD, JR.