US976788A - Heel-seat extension for lasts. - Google Patents

Description

J. A. DOW. HEEL SEAT EXTENSION FOR LASTS. APPLIoATIoN FILED AUG. 15, isos.

976,788. Patented Nov.22, 1910.

v 7g l 7'/ r @iw m //////f//////////////////.,/,/////,A

THE NaRRls PETERS co.. WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

JOSEPH A. DOW, OF LYNN, MASSACHUSETTS, ASSIGNOR T0 RELINDO CUSHION SHOE COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS. i

HEEL-SEAT EXTENSION FOR LASTS.

To all whom it may concern:

Be it known that I, JOSEPH A. Dow, of Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Heel-Seat EX- tensions for Lasts, of which the following is a specification.

This invention relates to a last for making a boot or shoe having an internal elastic heel cushion located above the rigid portion of the heel of the shoe instead of forming the tread portion of the heel, the heel portion of the innersole of the shoe being olset below the highest part of the shank portion to form the bottom and front end wall of a recess adapted to contain an elastic cushion, the upper portion or foot supporting surface of which is substantially flush with the highest part of the shank portion of the innersole.

The invention consists in a heel seat eX- tension having an attachment for an ordinary last and enabling a shoe having the above-mentioned cushion pocket to be made on the last.

Of the accompanying drawings forming a part of this specilication, Figures 1 and 2 represent plan views of the parts or members of a heel-seat extension embodying my invention. Fig. 3 represents a. section on line 3-3 of Fig. 1. Fig. 4 represents a section on line 4 4 of Fig. 2. Fig. 5 represents a modification of the part shown in Fig. 4. Fig. 6 represents a longitudinal section of the heel portion of a partially completed boot or shoe constructed in accordance with my invention. Fig. 7 represents a longitudinal section of the heel portion of the completed boot or shoe. Fig. 8 represents a perspective view of the curb lift.

The same reference characters indicate the same parts in all the figures.

In the drawings, 12 represents the heel portion of an ordinary last which is or may be provided with the usual metallic bottom plate 18, although the latter is not essential to the purposes of my invention.

Taking an innersole 14, the heel portion of which has a bottom layer 15, which in the completed shoe forms the bottom of a cushion pocket, and a top layer 16 which forms a cover for a cushion inserted in said pocket, said layers being formed either by splitting the heel portion of the innersole, or otherwise, I interpose between said layers 15 and Specicaton of Letters Patent. Patented N0V 22, 1910.

Application filed August 15, 1908.

Serial No. 448,637.

16 a curb lift 17, the margin of which is heelshaped, while the cent-er is cut away to form an opening 18, the margin of which constitutes the wall or edge boundary of the cushion pocket. In case the heel portion of the innersole is not split, the curb lift is applied above the heel portion of the innersole. The outer side of said lift is beveled at the front end of the lift to form an incline 19. The beveled portion of the curb lift 17 is preferably secured to the corresponding portion of the innersole either by a tack 20, or by sitches or cement. To the curb lift 17 I apply temporarily a heel-seat extension, which, in effect, constitutes a part of the last although it is not secured thereto, and is adapted to be applied and removed by the operator. Said extension is preferably composed of two parts or members, 21 and 22, which are made in separate pieces and are separable from each other. The part 21 constitutes a rigid filler for the opening 18 in the curb lift, said filler being a metal plate of substantially the same thickness as the curb lift, and having its margin formed to accurately fit the margin of the opening 18. Preferably, the margin of the opening 18 is enlarged to form a seat 24 which is inclined outwardly from an abutment or wall portion 25, the filling portion 21 having a flange 27 conforming to the enlarged portion 24, and a shoulder' 28 conforming to the abutment or wall 25. The part or member 22 of the heel-seat extension is preferably a relatively thin heel-shaped plate of greater area than the liller 21, and formed to bear on the outer side of the latter, and to project over the outer side of the curb lift, as shown in Fig. 6. The parts 21 and 22 are provided with centralorices 29 and 30, through which an attaching nail 31 may be driven to secure the heel portion of the outersole to the last. The parts 21 and 22 are also provided with longitudinal slots 32 which coincide and are adapted to receive fastenings such as tacks 33, the heads of which are wider than the slots, said tacks being driven through the slots into the portion 15 of the innersole, as shown in Fig. 6. The tacks and slots permit slight edgewise adjustments of the parts of the extension relatively to the innersole. The chief object of this adjustability of the eX- tension parts is to enable them to be moved forward or backward to compensate for variations in the stretch of the stock and to enable the laster to accurately fit the parts *in accordance with the stretch.

' InV practice, the heel-seat` portion is; preferably applied in the manner described to the innersole kin the stock-room of Ka shoe factory before the lasting operation. Vhen :the "laster applies the innersole to-the last,

he is enabled by means of the slots 32 to lnake such adjustment of the heel-seat eXtension as maybe desirable in view of the stretch 'of the 'upper kand innersole.

The innersole, with the cushion curb and heel-seat extension applied to it as described,

Yistaken by the laster and placed upon the lastand temporarily lsecured'thereto by the nail '31, after which the innersole is conformed to the .cushion curb' and the heel-` Vseat extension by a suitable leveling'or pressing operation which imparts an incline to the portion 35 of the innersole between `the Y,rear portion l5 and the shank portionthereof, `therear `portion 15 being offset from the bottom of the 'last so that it isfadapted to .subsequently form the bottom of 'the cushion 'pocket 36 shown in Fig. 7 lThe outersole 37, is neXt applied'and its' heel port-ion is ksecured to the oEset heel 'portion of the innersole by lshort nails 38 which are clenched upon the part22 "olf the heel-seat extension.

The usual leather heel 39 is then applied,the YVheel-attaching nails'llO being also clenched upon the'part 22 of the heel-'seat extension. Afterl the heel has been applied, the heelseat extensionis released from the innersole by the withdrawal Vof the tacks 38, and is Sthen withdrawn from the cushion curb, leaving-the. cushion pocket vacant and ready for the reception of a suitable elastic-'heel cushion shaped to conform accurately to said pocket. In removing the heel-seat eXten- 'sion, rtheirear portion of the cushion curb is swung outwardly to permit the `withof a clenching part S22-which is of greater f areafthan the' filling part 21. If desired,

however, the heel-seat extension may be made "in a single piece of thickness equal to the combined thickness of the two parts 21 and 22, asshown vin Fig. 5.

From the foregoing it Willbe seen that my invention is embodied solely in a heel seat extension for a last adapted to be used as :described to form a cushion-receiving pocket.

I claim:

l. A heel-seat extension for lasts comprisling a filling portion having an area considerably less than that of the heel seat of a lastwher'eby said filling portion may occupy an opening in a cushion-confining lift, and an outer clenching portion, said extension being separable from the last with which it is used.

2. A heel-seat extension for lasts comprising afilling portion having an area considerably less than that of the heel seat of a last whereby said filling portion may occupy an opening in a cushion-confining lift, and an outer clenching portion, said extension being formed in two parts which are separa- -ble from each other and from the last with which theyare used.

'3. A heel-seat extension for lasts compris- 'ing a filling portion having an area considerably less than that of the heel seat of a last whereby said filling portion may occupy anopening in a cushion-confining lift, and an outer clenching portion, said extension being separable from the last with which it is used, the extension being provided with fastener-engaging means which permit `adjustment of the extension relatively to the last and parts of the boot or shoe thereon.

n 4. A heel-seat extension for lasts comprising a filling portion having an area considerably less than that of the heel `seat of a -lastwhereby said-filling portion may occupy an opening in a cushion-confining lift, and an outer clenching portion, said extension being formed in two `parts which are separable from each other and from the last with which they are used, said parts being provided with coinciding longitudinal slots, adapted t-o receive fastening devices.

5. A heel-seat extension for lasts, separable from the last-with which it is used, said extension having an area considerably less than that of the heel-seat of such last, theentire margin of saidextension having an outwardly extending flange, substanti ally as and for the purpose set forth.

In testimony whereof I have aiixed my signature, inv presence of two witnesses.

JOSEPH A. DOI/V. Witnesses:

GILBERT C. BEMIs, ARTHUR H. BROWN.

Images