US1283295A - Non-pinching attachment for lasts. - Google Patents

Description

.l. D. POTTS. NQN-PINCHING ATTACHMENT FOR LASTSY. APPLlCATlON man MAY 29. 1918.

. M my Patented Oct. 29, 1918.

Inverr J UNITED STATES JEFFERSON D. POTTS, OF ST. LOUIS, MISSOURI.

NON-PINCHING ATTACHMENT FOE LASTS.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Application filed May 29, 1918. Serial No. 237,355.

To all whom it may concern:

Be it known that I, JEFFERSON D. Po l'rs a citizen of the United States, residing at t. Louis, in the State of Missouri, have invented certain new and useful Improvements in Non-Pinching Attachments for Lasts, of which the following is a specifica tion containing a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part hereof.

M y invention relates to an improvement in shoe-lasts, and it consists in the novel con struction and arrangement of parts hereinafter fully described and claimed.

lleretoi'ore. in the manufacture of shoes upon the various machines which hold the work upon lasts, the construction has been su h that the jack-stand pin and its metallic thimbie have accidentally caught the material of the quarters and the lining thereof between said metallic parts and pinched one or both ot' them, and have in many cases, actually out the material of the lining and the leather quarters, in such a way as to greatly damage them and require replacement of the parts at considerable expense.

The object o'f'my invention is to provide such'an improved construction of the shank or ankle of the last that the jack-pin cannot pinch. cut or damage the material of the shoe during the various steps of manufacture.

In the drawings,

Figure 1 a side-elevation of a shoe mounted upon a last and jack-stand, and having my invention applied to said last.

Fig. 2 is a vertical section, taken on the hue 2-2 of Fig. 1.

Fig. 3 is a vertical transverse section of the parts of the last and jack stand shown in Fig. 2. enlarged somewhat.

Fig. 4 is a similar view, showing a modification.

Fig. 5 is an cation.

Fig. 6 is a rear elevation of a portion of the ankle of a last having my invention applied thereto. and

Fig. 7 is a diagran'imatic plan view of the cushion-leather, thimblc, and my anti-pinching construction of the ankle of the last. and a piece of material. to illustrite the opera tion of my invention upon the material.

The num rail 1 designates the usual jackatand; 2 the common pin thereof, and 3 the metallic thimble which is always seated in elevation of a further modifithe heel of the last and provided with the usual end-flange 4 to assist in taking the end-thrust of he said jack-stand pin.

Heretofore, the ankle of the last has had the flange of said thimble flush with a cushion of leather 7 fixed by cement or glue on the seat of said ankle, which has permitted the material of the shoe to he accidentally caught and damaged between said flange 4 and the said pin, in the operation of placing the last carrying the shoe in position upon said jack-stand.

In carrying out my invention I place upon the seat 6 of the last-ankle either underneath or exterior of the usual cushion 7, (when it is desired to apply my invention to the lasts in common use) an additional cushion, or a cushion 8 having an annular or circular recess 9 that is of such diameter that when the last is placed upon the jack-stand the pin 2 thereof will be cleared because of a considerable space or an annular space surrounding said pin, and extending such a distance outwardly beyond the outer face of the said flange 4 of said thimble 3 that under the ordinary circumstances of the work with the last it will be impossible for the shoe lining or shoe material to be pushed into the said thimble by the said jack-pin .and be pinched or out between the said pin and said flange of said thimble, but said material (if it should at all be caught by said pin) will be pushed a little way only into the said annular recess 9, and no damage will be done to said material.

Referring to Fig. 2, the numeral 11 indicates the leather quarters of the shoe 12, while the numeral 14 designates the lining quarters.

In all the figures the numeral 15 designates the last.

In Fig. 4 I have shown a single cushion layer 8, having said annular or circular recess formed in it, and placed directly upon the seat of the last ankle, as should be done in manufacturing new lasts; while in several other views I have shown the cushion in two layers, the outer one having my recess 9 in it, and which course may be followed whether the last be new or old at the time of application of my invention thereto.

In Fig. 5 I have shown my improved recessed outer cushion 8 applied to a smallsizejast, the sea-t of which 18 too narrow to permit me to cut thesaid annular or circular recess in it without weakening the angle too ill nun-h. and in such a ease I propose to make the said outer l'(('('H\ttl cushion layer wider than the inner layer 7, so that (as there shown) the opposite .-dges of said recessed layer projert a distance beyond the edges of the mill inner layer, and thereby preserve a Millieient bodv of the recessed cushion at the sides of the thimhle 3 to withstand the pres- -nre lIllIKhf'tl by the jack-stand during use of the last.

]lt)\\(\ll', n making new lasts of the smaller sizes the thickness of the ankle can he llltlPLhtfl while the wood of the ankle is heing fashioned. as may also its height; thereby doing away with the necessity of the inner la \er T, and locating, the flange 4 of said thinihle flush with the wood seat 1% of the last. as shown in Fig. 4,

In the operation of my invention rtferring to Fig. T. it will be seen that the sh w material ll. htn it is engaged accidentullv n the pin of the lurk-stand pa sing into the flanged mouth of said thimble 3, will push .-:aid material laterally into said annular recess J surrounding said pin, without reach- 25 ing or coming into Contact with the flange 4 or any part of said thiinble; and hence said shoe material will not be cut or damaged by said parts.

What I claim is:

A shoe-last having the usual flanged-thimhle in its ankle portion, and a cushion having an annular recess of greater diameter than the diameter of the bore of said thimble, and placed on the outer end or seat of said ankle 35 portion, exterior of said flange.

In testimony whereof, I have signed in) name to this specification in presence of two subscribing witnesses.

JEFFERSON I), POTTS.

\Vitnesses:

Famous Iloovrzn Rosexmun, Jenn U. IIIHDON,

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