US1379478A

US1379478A - Expansible shoe-last

Info

Publication number: US1379478A
Application number: US400018A
Authority: US
Inventors: Schevitz Carl
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-07-30
Filing date: 1920-07-30
Publication date: 1921-05-24
Anticipated expiration: 1938-05-24

Description

C. SCHEVFKZ..l ExPANslBL'E sHoE LAST. APPLiCATION FIL'ED IULY 30, 1920.

' Patented May 24919211.

2 SHEETS-SHEET l.

INVENTo-R C. SCHEVITZ'.

EXPANSIBLE SHOE LAST. i APPLicAImN FILED :uw 30,'1920.

- @5379,478. Patented May 2541, 1921i.

f wvf A o Carl, "Scheviz BY ff" J? ATTORN E( CARL SCEVITZ, OF JACKSONVILLE, FLORIDA..

EXPANSIBLE SHOE-LAST.

Application filed July 30, 1920.

T 0 all whom t may concern Be it known that I, CARL SoHEvITZ, a citizen of 'the United States, residing at Jacksonville, in the county of Duval and State of Florida, have invented new and useful Improvements in Expansible Shoe- Lasts, of which the following is a specification.

This invention relates to shoe stretching means, the present invention being an improvement over that forming the subject matter of a patent granted to me on lDecember 23, 1919, Serial No. 1,326,100. lOne of the objects of the present invention is to provide a casing for inclosing the working parts and to shape the heel frame so that it will conform to the shape of the heel part of the shoe and the handle part of the heel frame will form a part of the inclosing casing when the device is not in use.

Another object of the invention is to so form the central portion of the device that it will conform to the arch and shank of the shoe when the device isv placed in the shoe.

Another object of the invention is to provide means whereby the instep stretching member Vmay have a greater degreev of movement than in the former device and to positively connect said member with the frame of the device.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an elevation of the improved device. A Y

Fig. 2 is a longitudinal sectional view. Fig. 3 is a plan View with parts in section.

Fig. 4 is a view of one of the 'cam frames.

Fig. 5 is a view of one of the sliding frames.

Fig. 6 is a view ofthe heel frame.

Fig- 7 is a view of the key for operating the various parts of the device.

Fig. 8 is a view of the instep stretching member. l

9 is 'a Vview of the side stretching member.

Fig. 10 is a View of the toe member.

In these views 1 indicates the main frame which is formed with the inwardly extending osetportions'rl", intermediate the ends of its side bars for forming the contracted portions for fitting in the shank of the shoe.

Specification of Letters Patent.

Patented May 24, 1921.

serial No. 400,018.

The 'side bars of Jthe frame are provided with the slots 2. At the rear of the main frame is secured the lower end of the upright 3. Vithin the main frame is located a pair of longitudinally extending strips 4, said strips being spaced apart and their front ends having upwardly extending por- -tions 5 which are slotted as at k6. These strips form a guideway for the longitudinally movable bar 7 which passes through an openingV in the front cross piece of the main frame. The front end of said bar is provided with a spring pressed pin 8 and this end is adapted to receive the toe stretching member' 9. The rear end of this bar is provided with a screw threaded bore which receives the screw threaded part of shaft 11. This shaft is connected with the upright shaft 12 by the gears 13. The shaft 12 is carried by lugs 14 formed on the upright 3. The upper end of the shaft 12 is square so as to receive the squared socket of the key 15.

Associated with the main frame is the heel frame 16 which is of substantially U- shape with the under edges of lthe legs of the U provided with a plurality of notches 17 and the upper edges at the ends of the legs provided with the projections 18. These notches and projections are adapted to engage the projections 19 on the upright 3 to permit the adjustment of said heel frame. The heel frame is also provided with the handle 20.

A pair of sliding frames 21 are located in the spaces between the sides of the frame and the strips 4. These side frames are of yoke-shape with their limbs brought close together to fit in the contracted part of the main frame and they are each provided with a. small laterally extending lug 22 at the extremity of one leg and an upwardly extending part 23 at the extremity of the 'other leg. Each leg is also provided with a pair of elongated slots 24 which are adapted to register with the slots 2 in the main frame and with similar slots inthe strips 4. The lugs 22 are also adapted to engage with the slots 2 in the main frame.

A pair of cam frames 25 are located in the frames 21 and both sets of frames are slidingly held in the main frame by the pins 2G, a pair of which is carried by each As shown in Fig. 4 the cam frames are of channel shape in cross section with one end closed and this closed end has an inclined corner 27, which forms a cam. These cam frames are of the same general shape as the frames 21. The closed end of each cam frame is adapted to coperate with the closed end of the frame 21 for adjusting the side stretching member 28.

The upwardly projecting part 23 or' each of the frames 21 has pivoted thereto a rack barv29, the teeth of which are adapted to engage a cross piece 30, which forms part of a channel bracket 31 secured to the uprigjit 3.

he rack bars are adapted to be held with their teeth engaging the cross piece by means of a rod 32 carrying a pin 33, which engages the upper edges of said rack bars, and said rod is provided with a guide 34 at its lower end which has sliding engagement with the bracket 31. The rod 32 is normally held with its pin in engagement with the rack bars by a spring 35. The upper end of the Vspring bears against a collar 36 loosely mounted on the rod and having its upper end engaging the bent over end 3 of the upright 3. The rod 32 passes through akeyholeshaped opening in said bent end and the rod is provided with a fiat portion for engaging the small part of this opening so as to hold the rod in its upper position, against thek tension of thespring and with the pin 33 out of engagement with the-rack bars to permit said bars t0 be movedlongitudinally so as to adjust the frames 21.

A pair of curved varms 37 is connected with the rear part or" the main frame by the links 38 and the front ends of these arms are pivotally connected 'to the cam Jframes 25by pins 39 passing through'the reduced portions of said cam frames. The upper ends of the arms are pivotally connected to the socket members 41 and these socket members receive the ends of the screw threaded shafts 42 which pass through the screw threaded collars 43. Said collars are held against rotation in the part 3 of the upright 3.' The upper ends of theshafts 42 are squared to receive the key 15. f

An arm 44 is pivota-lly mounted to the bracket 45 which extends forwardly from -the upright 3 and the front end of the said I `arm carries a roller 46 which is adapted to surrounds the upper part of the device and.

extends under the upper end of the instep member 47. The part 2O of the heelmembei' 16 is of curved shape in cross section and will form the rear part of the casing whe the device is in closed condition.

It will thus be seen that the interior parts of the device will be covered up by the casing, the instep member 7 and the heel member 16. This member 16 fis also formed to conform to the shape of the rear part o the 5 shoe as willvbe seen from the drawings.

Ialso provideabottom plate 51 for the device which is secured to the main frame .1 and this bottom plate is provided with a central arch part 52,' the side barsoit the- L main frame being cutaway at their lower edges to receive this' arch. vThis will make the deviceconform to the'shape of the inner sole of the shoe.

I also form the toe member 9 with a, I curved recess 53 on each side of its stem 54 which is socketed to receive the end of the Ymember 7. The-instep member 47 is provided with a `slot 55 at its front end and a pair of rounded extensions 56 on each side fof the slot which will pass into the recesses 53 when the instep member is'tilted upwardly. In this action the slot 55 receives the stemr 54. This arrangement of parts will permit a greater degree .of movement, 3

of the member 47than inthe former construction.

I also form the key 15 with a handle 15 of the shape shown in Fig. 7 and with a roughenedextension 15X which projects'v abovejthehandle. This will to berapidly rotated. A

The operation of the device is` as 'follows permit the key vThe last is placed within the shoe and the L heel frame adjustedlto make the last fit the shoe. lThe key' is then placed on the shaft 12 and the same rotated to force the toe stretching means 9 into the toe.'A The key is then placed on shaft 47 t0 move the arm'44 to f adjust the instep supportfto stretch the instep. Then the key is placed on one of the shafts 42, according towhich'side the side stretching member 28 is located. By raising the rod 32 the rack bars'are unlocked and by rotating the shaft by the key both the cam frame and the side frame can be adjusted longitudinally to place the side stretching member 28 in its proper position. The frame 21 is locked by lowering the rod 32 so that upon further rotation of the shaft the cam frame will move within the frame 21 and thus press the shank 28 of the side stretching member 28 between the ends of the two frames and the pressure of the cam 27 against the inclined face of the shank will cause said member 28 to move laterally away from the side of the main frame.

It will thus be seen that the whole adjustment may be carried out from the exterior of the shoe so that it is not necessary to place the hands within the shoe.

When the locking rod 32 is in raised position the guide 34 will be raised so as to hold the rack bars above the cross piece 30 and thus permit free movement of the frames 21.

The casing and the instep member will give the device the appearance of an ordinary last while at the same time protects the working parts from dust and dirt and the formation of the casing, the heel plate and the bottom plate, as shown in Figs. 1 and 3 will make the device conform to the shape of the interior of the shoe.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is 1. An expansible shoe last comprising a main frame having a contracted central portion, an upright member secured thereto at the rear thereof, slidable members in said frame, operating shafts for said members journaled in the upright member, a casing secured to the upright member and surrounding the shafts and provided with curved lower portions for conforming to the shape of the shoe and shoe expansion members connected with the slidable members.

2. A shoe last of the class described comprising a frame having a contracted central portion and an arched bottom, a bottom plate carried by the frame also having an arched part, slidable members in the frame, shoe expansion members carried by said slidable members, an upright secured to the frame, shafts journaled therein for actuating the slidable members, a casing secured to said upright and inclosing the shafts and having its lower part curved to ft in the contracted portion of the frame, said casing being extended over the main frame and shaped to fit the shoe and an instep member connected with the front part of the frame and having its other end resting on the extended part of the casing.

3. A shoe last of the class described comprising a frame having a contracted central portion and an arched bottom, a bottom plate carried by the frame also having an arched part, slidable members in the frame, shoe expansion members carried by said slidable members, an upright secured to the frame, shafts journaled therein for actuating the slidable members, a casing secured to said upright and inclosing the shafts and having its lower part curved to fit in the contracted portion of the frame, said casing being extended over the main frame and shaped to fit the shoe, an instep member comiected with the front part of the frame and having its other end resting on the extended part of the casing, and a heel plate including a handle part of curved shape in cross section and formed to conform to the rear part of the shoe.

4. A shoe last ofthe class described comprising a main frame, a slidable member therein, a toe stretching member connected with said sliding member, said toe member being recessed, an instep stretching member pivotally connected at one end to the frame and having an extension adapted to engage the recess in the toe member when the said instep stretching member is tilted, means for tilting said member and means for moving the sliding member.

5. A shoe last comprising a main frame having a contracted side portion for fitting in the shank of the shoe, a pair of slidable frames located in the main frame, a cam frame located in each sliding frame, said sliding and cam frames having contracted portions working in the contracted portion of the main frame, a side stretching member having a shank adapted to be engaged by the cam fra-Ine and means for moving the sliding frame and the cam frame to adjust the position of the side stretching member and to move the cam frame in the sliding frame to force the side stretching member laterally.

In testimony whereof I alix my signature.

CARL SCHEVITZ.