US1418546A

US1418546A - Shoe last

Info

Publication number: US1418546A
Application number: US409877A
Authority: US
Inventors: Ernest A Eastman
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-09-13
Filing date: 1920-09-13
Publication date: 1922-06-06
Anticipated expiration: 1939-06-06

Description

'Pgter lt C a nc el1ed. by Court.

E. A. EASTMAN.

SHOE LAST. APPUCATION FILED SEPT-13,1920.

1,418,546. a ented J ne 6, 1922.

2 SHEETS-SHEET I.

; llllllllllIllllllllllllllmnm..... v 4 ullll lllllllllllllllfllllllln i I fllllllllllllllll 7 41 1Q style lasts into new shapes.

40 improve the process and mode of shoelasts for reshapn'w, whereby a niaX|.-'

nan-Est anneal/IAN, or rearsnoorn, onto.

snon kis'r.

' Application. filed September T all whom it may concern:

Be it known that I En:vns'r A. Eas'rnan, a citizenof the United States,resid1ng at Portsmouth, in the county of Scioto and 5 State of Ohio, have invented certain new and useful Improvements in Shoe Lasts. of which the following a specincation.

My invention relates to shoe lasts, and' particularly to a method of reforming old The styles of shoes change rapidly- These changes are frequently very marked, as from a flat pointed toe to a higher and broader toe and from one havin :1 hi h' I I 4 15 heel necessitating a. marked spring to the .toe, to one having a lower heel and having less angularity or spring of-thesole, and

vice versa.

It is a comparatively simple matter to return a last having a large toe into one oi less height and narrower or more pointed outline, but when the change involves an extension or enlargement of the last, considerable difliculty has been experienced.

The present scarcity'and high price of ma terials suitable for last making is an incentive to the conservation of such material by rebuilding, and shaping those lasts whit-h may not be worn out, but which have become obsolete through change in style of shoes.

The expansion of lasts and other bodies by the insertion of shuns or wedges," driven into saw kerfs, cut in the last has heen attempted, but the difliculties of sucressfully carrying out the operation and the losses incident to the splitting of the last has been such as to discourage the re-use of obsolete lasts.

The object of the present invention is to preparing mum degree of expansion may be effected .with minimum losses, through splitting or other damage to the last, and which "Wlll afford a completed rebuilt product, substantially equally as strong, as the original last, and capable of an. extended period of usefulness.

A further object of the. invention is to pro 0 vide reenforcement for the renewed last, and p "to further provide means for checking 'orintercepting the splitting tendency and to! increasing the flexibility of the last segment to facilitate the insertion of the expanding shims.

ipepification of Letters lkitent.

dental objects in. view as will more Patented June 6. 1922. 1520. Serial 1%. aeeew. Y

With the above primary and other incifully appear in the speeiiication; the invention consists of the features of constru'ctionyand the mode of'operation or their equivalents as hereinafter described and set forth the el aims.

- Referring to the drawings, l ligi l is a bot tom plan view'of narrow orpointd toeshoe last prepared according to the herein described. .niethod to receive the expanding shims, Fin; 2 is perspective "view otthe 'shoe' last, showing inserted therein the expansion shims for broadening the todand also raising the same and a transverse reentioroing dowel, priorto the reshaping of the last. Fig. is a like view of the same last upon the completion of the reshaping operation. 'l 'igz. 4 is aho-ttom plan view of the last shown in Fig. 1 after the insert tron. oi the expanding shims. Fig. 5 is aside elevation of a last illustrating thginsertion .of a shim for decreasing the spring of the toe, to accommodate the last to a shoe having a lower heel. i

Like parts are indicated hy similar characters of reference. throughout the several views. f

In the accompanying drawings, .1 is'a shoe last oi the ordinary pointed toe now ohscfiete, which it is proposed tojfe xpand,

and reshape into a usable last 'ot'}current style.

In order to expand or broaden thetoe of the last. two

divergent saw korts

2 and 3 ha e been provided extending inwardly as to leave an unsevered portion of the material. which serves to integrally retain the last segment. and which is by the insertion of the

shims

4 and 5. One of the dit'tioulties heretofore experienced is the tendency of the last to split in con yieldingl'y tinuation of the

kerfs

2 and 3 through the unyielding character of the remaining unsevercd material between the terminations of the kerfs. The destruction of such a large proportion of lasts, due to this cause has rendered the renewing of lasts a rather precarious undertaking.

In the present instance this difficulty has been overcome by providing a hole 8, ap proximately at the projected intersection of the kerf, that is to say, at a. point at which the kerfs would intersect if projected, or substantially in the lineal direction of the grain of the last block, from the termination of the

insert receiving kerfs

2 or 3. While this hole 8'is preferably located in spaced relation with both the insert receivlng and clearance kerf, it may be located at the extremit of the insert receiving kerf and intersecte by such kert as shown at 8, in Fig. 1. This hole in any event inter sects a split, which may be developed in the last and by the severance of the separating fiber, it arrests the splitting tendency. and suliiciently weakens the connecting portion of the last to enable the flexing of the lateral segments. It will be obvious that the fibers of the last remaining intact upon the opposite side of the hole 8 from any split de veloped by the insertion of the stem will not readily yield or permit the continuation of such splitting action beyond the hole.

The

shims

4 and 5 are tapered or wedge shaped pieces of wood or other material, driven lengthwise into the saw kert's '2 and 3, thereby forcing the lateral segments outwardly and expanding or broadening the toe of thelast. This outward deflection of the lateral segments of the last is compensated for by the closing of the transverse or angularly disposed clearance kert's 6 and 7.

In order to raise the heights of the toe an additional kerf 9 is cut horizontally from the toe of the last rearwardly substantially parallel with'the bottom or sole. This toe elevating kerf is preferably cut subsequent to the insertion of the expanding or broadening shims 4. and 5, and extends through such shims. A co-actin clearance kerf 10 is cut across the top of t 1e toe, at a substantially mid-point between the tip and the comb of the last. To check any splitting of the last, and to increase the'flexibility of the top segment, a hole is bored transversely through the toe of the last at 11 in proximity tothe termination of the toe elevating kerf 9. This transverse hole maybe intersected by the kerf 9 or the hole may be in spaced relation with the end of the kerf in the lineal direction of the grain of the last, therefrom. A wedge shaped shim 12 is then driven into the saw kerf 9, which elevates the top segment of the comb of i the last substantially closing the transverse misses lcerf 10. It will be understood that prior rated portionset the last and the inserts or shims are firmly and securely united one to the other. To further strengthen the last, reenforcing it against separation of its parts. and strengthening it to compensate for the various saw cuts made therein, dowel pins 14 are inserted and securely. glued or cemented in the

holes

8, 8' and 11. These dowels not only close the holes, which after the insertion of the shims have served their usefulness, but restore the original strength and durability of the last. The inserted shims and expanded segments of the lasts are then reduced and shaped to the desired contour, producing in the renewed last, an enlarged sole, having a con tour agreeing with the modern style and materially different from the flat narrow toe of the obsolete last operated upon, While the operation heretofore described and as illustrated in the drawing, pertains to the enlargement of the toe portions of the last on1y,-it will be obvious that other portions of the last may be modified by the same method, whereby the shape and contour of the heel may he changed, the comb of the last heightened or the extreme thin comb last of recent years materially thickened. The process to be employed is the same as before described, the difference being merely in the location of the saw kerfs. In each instance the use of the hole, which checks the splitting tendency and increases the flexibility oi the connecting portion of the last will he found of material advantage and perform its function as before described.

A common modification is to reduce the spring of the last to accommodate a lowered heel. Such a renewal is shown in Fig.

'5, wherein the insert receiving kerr' 15 is provided across the top or instep of the last and the clearance kerf 16 is substantially in line therewith, but in the bottom or sole of the last. The terminations of these hcrt's are separated by an intern'iediate uncut portion of the last, in which is located a trans verse hole 17. This. hole may be in spaced relation with both of the kerfs or may he intersected by the insert receiving kert' 15,

which latter location is preferred in this aziness The driving of a shim d8 into the kerf 15 deflects the toe of the last downward thereby changing the angle of the bottom or sole of the last after which the last and insert are dressed to uniform contour and re.

shaped into the renewed torn.

While 'the process herein-described is primarily intended tor-the renewal of shoe 1asts,'in which at the present time, it finds its widest range of usefulness, the process is not'liiiiited 'toshoe lasts alone, butmay be employed quite generally in the reformation,

renewal and expansionolf'. v'ari oi'is articles .is susceptible of modification in its form.-

-pr0portions. detail construction and arrange ment of parts without departing from the principle involved or sacrificing any of its advantages.

While in order to comply with the statute the invention has been described in language more or lessspecitic as to structural features, it is to be understood that the invention is not limited to the specific details shown, but that the means and construction herein disclosed comprise but one of several modes of putting the invention into eiiect, and the invention is therefore claimed in any of its forms or modifications with the legitimate and valid scope of the appended claims.

' Having thus described my invention, I- claim:

1. The herein described method or altering wooden objects, wherein a shim. is driven into one of two kerr's. the innerends of which approach into approximate relation one to the other. characterized by providing a hole in the body in juxtaposition to the approacl'iing ends of the lterfs by which the resistance to flexing action of the at tached' portion of the section defined by the kert's. is decreased and incidental splitting of the body minimized.

25 A wooden object having therein two keri's. the inner ends of which extend into approximate relation one with the other, and a shim inserted in one oi the lteris to expand the body by dcflccting a section thereof defined by said hcrt's, characterized by having a hole formed in said body' in juxtaposition to thc'adjacont ends of the kert's and cxtcnding substantially parallel with the plancs of the ltcrt's.

I). A wooden body having therein two kcrfs co-acting to define a flexible section of a, The herein described method of reins 'lorcing 'a'n altered wooden body Wherejinfa.

spreading wedge has been inserted .kert, to expandv the body, characterizedfby inserting m sa d body a dowel arranged in: v

substantially parallel relation with thepla of the inserted spreading Wedge and approxiiiizite relation to the apex thereof;

A shoe last, the toe porton of which is provided with tworearwardly extending divergent slots and wedge shaped shims inserted in said slots deflecting the lateral portions of the last in opposite directions in relation with the medial body portion thereof.

6. A. shoe last having in the toe portion thereoi. rearwardly extending horizontally and vertically disposed intersecting slots and wedge shaped shims inserted within the intersecting horizontal and vertical slots to expand the last toe vertically and laterally. I 7. The herein described method of altering shoe las 5 consisting in providing rear- Wardly extending divergent kert's in the toe portion of the last to form lateral yielding tongues and deflecting: saidi tongues outwardly by inserting in said kerfs Wedge shaped shims whereby the greatest de ree of expansion will be effected at the forward extremity of the last.

8. The herein described method of altering shoe lasts consisting in providing in the toe portion of the last, a. rearward extending her. inserting in said keri't' a spreading wedge torrnin' in said toe portion a second lzei'l interse mg the plan of the first mentioned lccri and inserting a second spreadinn wedge in said second kerf.

9. A shoe last having slots formed therein extending in intersecting directions, but terminating in spaced relation one with the other. said last, having a round hole located in the intervening portion of the last body in proximity to the terminals of the slots whereby the flexibility of such uncut portion of thebody is increased, and a wedge shaped insert rlriven in one of the slots thereby displacing the portion'bt the body intermediate the slots by flexing: the body in the vicinity of the hole. and a dowel subsequently secured in said hole.

ii). A wooden body having therein a saw kerl substantially parallel with the grain of the body to receive an expanding wedge, and a dowel pin insertcd in said body in the plane of the licri', and in proximate relation to the end thereof.

11. The process of preparing wooden bodies for reshaping including providing therein a saw kerf, substantially alined with my hand this 24th dey of August, A. D. the-grain of the body to receive a spreading 1920. Y wedge, providing in approximation to the termination pf the kerf, a hole in the plane ERNEST A. EASTMAN. 5; of the kerf and inserting a dowel pin in said Witnesses: v

hole. EDMUND J. KRICKER,

In testimeny whereofl I have hereunto set M. LOUISE BALMER'I.

DISCLAIMER.

1,418,546.Emest A. Eastman, Portsmouth, Ohio. SHOE LAST. Patent dated June 6, 1922. Disclamer filed January 20, 1926, by the patentee. Hereby enters this disclaimer to that part of the claims in said specification which are in the following words, to wit: a

5. A shoe last, the toe portion of which is provided with two rearwardly extending divergent slots and wedge-shaped shims inserted in said slots deflecting the lateral portions of the last in opposite directions in relation with'the medial body portion thereof.

6. A shoe last having in the toe portion thereof rearwardly extending horizontally and vertically disposed intersecting slots, and wedge shaped shims inserted within the intersecting horizontal and vertical slots to expand the last toe vertically and laterally. a

7. The herein described method of altering shoe lasts consisting in providing rearwardly extending divergent kerfs in the toe portion of the last to form lateral yielding tongues and deflecting said tongues outwardly by inserting in said kerfs wedge shaped shims whereby the greatest degree of expansion will be effected at the forward extremity of the last.

8. The herein described method of altering shoe lasts consisting in providing in the toe portion of the last, a rearward extending kerf, inserting in. said kerf a spreading Wedge forming in said toe portion a second kerf intersecting the plan of the first mentioned kerf and inserting a second spreading wedge in said second kerf.

[Ofiicz'al Gazette F ebruarg 9, 1926.]