US2382112A - Sole compressor for shoes - Google Patents

Description

-Aug; 14, 1945.. c. .1. SIMONETTI SOLE COMPRESSdR FOR SHOES Filed, March 30, 1942 2 Sheets-Sheet l INVENTOR wk) JJ'Z'JnaneZzEL' W- 1945. Y c. J. SIMONIETTIY 2,382,112

SOLE COMPRESSOR FOR SHOES Filed March 30, 1942 2 Sheets-Sheet 2 I N V EN FUR. fidi'kr J J 51220226285 'BYWM A TTORNEY' Patented Aug. 14,- 1945 UNITED STATES PATENT orFlc-E, I 1 1,382,112 f j j SOLE COMPRESSOR FOR SHOES, 2 l Charles 'J. Simonetti, Brooklyn, N. Y." Application March 30, 1942, Serial No. 436,778 1 Claim. (o1. 12'-124 provide a sole compressor machine incorporating I a"jack or last upon which the shoe is readily fitted and demounted. The sole compressing operation occurs at an intermediate stage in the manufacture of the shoes. With the system of my present invention, the second lasting operation, prior to the sole compression, is entirelydispensed with. Thus, the time consumed in mounting the shoes upon the second last and then stripping it off after the sole compression operation, is saved, reducing the cost of the shoe man ufacture. Also,'the investment in the lasts'requisite for the corresponding prior art operation is obviated. The invention is particularly applicable'to the manufacture of slippers, playshoes, and regular shoes, reducing the manufacturing cost thereof. 1

The above and other advantages, capabilities and objects of my invention will become more apparent in the following description'of a preferred form for practicing my invention illustrated in the following drawings, in which:

Fig. 1 is an end view of a sole compressor machine in accordance with my present invention.

Fig. 2 is a front view of half of the machine of Fig. 1.

Fig. 3 is a perspective illustration of the shoe jack mounted upon the sole compressor, in the operative position.

Fig. 4 is a perspective illustration of the shoe jack of Fig. 3, in position for inserting a shoe, preparatory to the sole lasting operation,

Fig. 5 is a vertical cross-sectional view through the shoe jack, taken along the line 5-5 of Fig. 3.

Figs. 6 to 8 show details'o'f a preferred embodiment of the shoe jack.

Referring now more particularly to the drawings, Figs. 1 and 2 illustrate the sole compressing machine incorporating the invention jack. The machine comprises a yoke I0, mounted on a pedestal I I, supported on base I2. The shoe jack or last I5 extends from a bar I6, pivoted at I! in yoke Ill. The elevation of bar I6 is adjusted through hand wheel I8, connected to a threaded rod I9, the endof which is coupled to a block 20. Block 20 rides in channel 2|, 2| ofbar I6, and is coupled to rod I9 through universal coupling 22. The elevation of bar I6 is adjusted in accordance with the length and size of last I5 supported above the machine bed.

The sole compressor machine includes a bladder 23 extending above the base il l of the'unit. The bladder may be of leather, rubber or the like.

I The bladder is inflated to provide pressure for the sole compressing operation for'the purpose hereinafter to be described. The inflation of bladder 23 is'accomplished when the operator depresses foot pedal 25'. Depression'of pedal 25 actuates lever 26 which in turn controls an air valve (not shown), which fills bladder 23 with compressed air, and presses it against the b'ottom of jack I5 in a manner known to those skilled in the art.

An important feature of the present invention resides in its adaptability for materially-facilitating the operation of r sole compressingin' the manufacture of shoes. The'shoe is fitted'on to the universal type jack I5. Towards this'end, jack I5 is provided with-a hinge or similar pivotal arrangement '21 to permit its-extension away from the vertical plane to the dotted position I5 shown in 'Fig. 2. The vertical position of jac k I5 corresponds to the sole compression position. After the shoe is inserted upon the jack- I5 when in the extended position I 5-, the jack bearing the shoe is returned to the vertical position. Hand wheel I8 has previously been adjusted so that bar It is at a proper angle to'holdjackIS and 'ar'shoe thereon contiguous with'bladder 23' when the jack is in a' vertical position; A 'p'ad28' shown in'Fig. 1 is preferably used beneath the rear or heel portion of the jack or shoe to afford acontinuous pressure actuation against the shoe duringtthe sole compression operation. By pressing on foot pedal25, the bladder 23 "is inflated to bear against the sole of the shoe mounted on jack I5 when in vertical position, to afford a uniform pressure of sufficient intensity against it. The hinged or pivoted arrangement of jack I 5, to be described in more'detail hereinafterj is such as to permit a sustained pressurein -a.=vertical plane or direction. After the compressing operation, the jack I5 is pivoted upwardly to position I 5', and the compressed shoe removed therefrom. Another shoe is then placed on the jack and the cycle of operations herein described is repeated.

In the manufacture of shoes of a certain type, the shoe platform is McKay stitched to the shoe body. Such operation requires the original shoe last to be removed. Heretofore it was then necessary to replace the last in order to continue.

with the sole mounting and compressing opera tions. The present invention, as hereinabove set forth, eliminates this second relasting operation in the following manner. The McKay stitched platform is cemented and dried. The sole to be of jack l5.

'cordance with the corresponding surface of bladder 23..

adhered to the platform is also cemented and dried. The sole is then spotted with glue or cement to its position on the platform. The shoe with the sole spotted thereto is then inserted onto the Jack I 5, when in the raised position l.

' 1 The jack is then put in the vertical or compression position and the sole compressed directly 1 thereon under the high pressure provided by the extension of bladder 23 with the compressed air. Aftenthe compression the shoe is removed by turning, the -jack to the outside position l5. The operation is then continued successively the second lasting is eliminated.

' with other shoes and without requiring rela'sting thereof. Thus, the number of lasts required i in the manufacture of shoes is cut in half, since Figs. 3 and 4 are enlarged perspective illus- 5 trations of a preferred'form for-the construction tion 30 connected to a fastening element 3| through hinge 21." Bar portion 30 extends to a position-beyond the hinge 2'! connection to form a projection 32. Thus, a type of hinged ar- Jack l5 extends from a fiat bar porrangement'is formed which permits the jack [5 to sustain a tremendousvertical pressure in the shoe compressing operation without twisting from its vertical alignment. When the bladder from the jack when in the extended position referred-i to. The-jack I5 is' connected to the service bar l6 through connecting piece 3| which A cotter The'slope of bar |6is adjusted through hand wheel |8 in acslope on the ,Jack. I5 is provided with anadjustable sole member. 36 so that one J'ackmay beused for several shoe sizes. The bottom section 31 of jack |5 generally conformsin shape to the type of shoe it is used for. However, therear section 38 is made a'little narrower than the actual shoe I to facilitate the ready mounting and demounting of the shoe on the lasts. I have found that the small discrepancy between the bottom surface ,31 of the last with respect to the'actual inner surface of the shoe does not affect the uniformity and quality of the sole compression therewith. Also, by extendingthe sole section of the last through sole member 36, a larger size shoe is readily accommodated by the machine. thermore, the intermediate or blankspace 39 Fur- 4 23 is in the deflated condition, the jack l5 may 3 i be manually twisted away from, the vertical po-. 1 sition to that shown at I5 in Fig. 2 and in Fig. 04. Ashoe may be readily put onor removed IGCGSSGS.

formed when sole section 36 is extended, does not affect the compression result. Thus,.one, two or three jacks of :this type may be employed for a whole line of shoe sizes.

1 3, 5 and 7. Rib 40' rides in a channel 43 in the bottom of jack l5; and plate 4| rides in a contiguous wider channel 44 within jack l5. Aset screw 45 is threaded into the central body portion of jack I5 and turned against top surface of plate 4| to hold the sole extension member 36in any desired adjusted position. Actual shoe sizes may be marked by scale 46 on the extending surface of plate 4| and rib 40 as shown in Figs. 3 and 7, to facilitate adjustment to a desired shoe size. Scale 46 is read at the contiguous last edge 41, shown in Fig. 3. Instead, a. scale may be marked on the underside 39 of the last as shown at 48 in Figs. 4 and 6.

' An extension member 50 may be mounted on bodiment for carrying out'my'present invention,

it is to be understood that changes'may be made therein falling within the broader scope thereof,

and accordingly I do notintend to belimited except as set forth in the following claim.

What I claim is:

A shoe jack comprising a'body portion having a sole shaped portion and a heel portion, a member adjustably extensible from said sole portion for increasing the shoe size of the jack, said membercontaining a longitudinal rib, a plate secured longitudinally of said rib, said plate and rib being fitted into a corresponding T-shaped channel in said body portion and said plate supporting said member on said body portion, means for securing said plate and said member to said body portion in their --adjusted position, said heel portion having a pair of longitudinally extending recesses therein, and a heel member selectively connectible to said heel portion for increasing the shoe size of the jack, said heel member having a pair of pins engageable in said CHARLES SlMONEII'II.

Production can therefore proceed with negligible handling or re-

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