US1570614A - Last - Google Patents

Description

l a transverse anchor pin Patented Jan. 26, 1926.

' LIMITED stares PATENT oFFicE.

GEORGE cLAUsiNe, orrPoRTsi/IOUTH, lonio, AssIGNon ToTHE vULcAN LAsT 00M- PANY, or PORTSMOUTH, omo, AcoRroRATIoN or omo.'

LAST.

Application filed May 18, 1925. Serial No. 31,098.

@To allwho'm 'it may concern: i

, Be it known that I, GEORGE CLAUsiNG, a 'citizen of the United States, residing at Portsmouth, in the county of Scioto and nState of Ohio, have invented certain new and useful Improvements in Lasts, of which the following is a specification, reference being had thereinto the accompanying drawing.

My invention relates to lasts.`

It is the obj ect of my invention to provide a last which will stay in either expanded or collapsed position and which will yieldingly resist movement from one position to the other. Y Y

It is an additionalobject to provide a: last in which the spring element resisting such movement will havethe maximum eect torv the size of the spring and in which a new spring may bereadily substituted.

It is an. additional objectto provide a .spring having the maximum oi leverage im posed upon itwithin the limitediarea permissible in a last, utilizing for this purpose to increase the leverage, the link system of joining the parts to one another.

Referring to the drawings: y

Figure 1 is a side elevation partially lin section of a last showing the arrangement oi levers, links and spring; and

Figure 2 is a detail plan view of the lever, link and spring system. u i

Referring to the drawings in detail, 1 is a toe part of a last and 2 is the heel part. The toe part is provided with a cut away slot 3 and the heel part with a cut away slot 4:; these slots are for the purpose of accommodating the link, lever and spring system.

The parts rock upon one another through'v a socket 5 and a knuckle 6 on the toe and heel parts respectively. The shoulders 7 and 8 below the knuckle joint limit the expanding movement of the last parts while the faces 9 and 10- of the' last parts limit the collapsing movement of the last.

The heel part of the last is provided with 11 passing through the cut awayslot l to the side walls of the heel partoi the last. This anchor pin carries pivotally the links 12 rwhich extend forwaidly to a pointl yWithin the toe part 1 in the' slot 3 ,where they are pivoted on the stud 13 which 'is carried in the elbow of the angular tivo ,nait leise 011e arm Qt which ,is

ing the middle portion thereof and has suspended in jaws 18 at the free end of the lever 17 a U-shaped spring 19 which has a free end turned over to form a hook 20 which engages with the forward side of a transversely located abutment pin 2l which extends through slots 22 in the links l2. The parts are so arranged that a line drawn between the center of the anchor pin 11 and the center of the stud 13 will pass over the center of the abutment pin 21 when the p-arts are moved from one position to the other, that is, from collapsed to expanded position.

.It will be understood that I desire to comprehend within my invention, such modifications as may be necessary to adapt it to varying conditions of use.

Having thus fully described my invention, what'I claim as new and desire to secure by Letters Patent, is

1. In a last, a toe part, a heel part, said parts being adapted to rock upon one another, an abutment carried by one of said parts, means to join said parts one to the other, said means being'pivoted upon one of said parts and upon a lever pivoted in another of said parts, a lever so pivoted, and positioned between said means, and a resilient U-shaped member carried in the free end of saidv lever engaging with said abutment.

2. In a'last, a toe part, a heel part, said parts being adapted to rock upon one another, an abutment carriedl by one of said parts, means to' join said parts one to the other, said means' being pivoted upon one ofy said parts and upon a lever pivoted in f, another of said parts, a lever so pivoted and positioned between said means, and a resilient U-shaped member carried in the free end ofsaid lever engaging withv said abutment, said abutmentbeing adapted to pass through said connecting means, said connecting means being adapted to move with respect to said abutment freely thereof.

3. Iiil a last, a toe part .and a. heel par@ adapted to rock on one another through a joint, a pair of spaced links connecting said parts, one end of said pair of spaced links being connected to one of said parts and the other end being pivoted to alever, a lever positioned between said links and pivoted in another of said parts and to one end of said pair of spaced links, a U-shaped spring connected to the free end of said lever engaging an abutment on one of the parts, and an abutment.

el. In a last, a toe part and a heel part adapted to rock on one'another through a joint, a pair of spaced links connecting said parts, one end of said pair of spaced links being connected to one of said parts and the other end being pivoted to a lever, a lever positioned between said links and pivoted in another of said parts and to one end of said pair of spaced links, a U-shaped spring connected to the free end of said lever engaging an abutment on one of the parts, and an abutment, the pivotal point of connection of the pair of spaced links with one of said parts being so arranged that a line drawn between the centers of the pivots will pass over the center of movement of the last parts as they move from one position to the other.

5. In a last, a toe part and a heel part, a pair of spaced links connecting said parts, a lever `positioned between said links and pivoted on one of said parts, a U-shaped spring carried on the free end of said lever, an abutment engaging the free end of said spring, whereby the movement of the parts is resisted from one position to the other.

6. In a last, a toe part and a heel part, a link connecting said parts, a lever pivoted o-n one of said parts, a spring carried on the free end of said lever, an abutment engaging the free end of said spring, whereby the movement of the parts is resisted from one position to the other, the points of connection of the link 'being so arranged that a line drawn between the centers thereof will pass yover the center of the abutment when the parts are moved from one position to the other.

7. In alast, a toe part and a heel part, a link connecting said parts, a lever pivoted y on one of said parts, a spring carried on the free end of said lever, an 'abutment engaging the free end of said spring, whereby the movement of the parts is resisted from one position to the other, the points of connection of the link being so arranged that a line drawn between the centers thereof will pass over the `center ofthe abut-ment lwhen the parts are moved rom'one position to the other, said abutment being adapted to Vpass through said "link which can move `freely with respect thereto.` A

8. Ina last, a toe part and a heel part, means of pivoting said parts one 'on the other, a pair of spaced links pivotally mounted on an anchor pin in one part and upon an angular lever in another part, an angular lever having its center portion positioned between and pivoted to said links, one end pivoted to the other last 'part and its other free end carrying a U-shaped spring, and a U-shaped spring engaging an abutment on one of the last parts, said links each having a slot therein.

9. In a last, a toe part and a heel part, means of pivoting said parts one on the other, a pair oit spa-ced links pivotally mounted on an anchor pin in one part and upon an angular lever in another part, an angular lever having its center' portion positioned between and pivoted to said links, one end pivoted to the other last part and its other 'free end carrying a spring, and a spring engaging an abut-ment on one oil the last parts, said links each having a slot therein, said abutment being adapted tov pass through said slots.

l0. In a last, a toe part and a heel part, means of pivoting said parts one on the other, a pair of spaced links pivotally mounted on an anchor pin 1n one part and upon an angular lever in another part, an angular lever having its center portion positioned between and pivoted to said links, one end pivoted to the other last part and its other i'ree end carrying a spring, and a spring engaging an abutment on one of the last parts, said links each having a slot therein, said abutment being adapted to pass through said slots, and said spring being so arranged that it is U-shaped, the free end of the spring having a hook bearing against the abutment.

ll. In a last, a toe part and a heel part, means of pivoting said parts one on the other, a pair of spaced links pivotally mounted on an anchor pin in one part and upon an angular lever in another part, an angular lever having its center portion positioned between and pivoted to said links, one end pivoted to the other last part and its, other free end carrying a spring, and a spring engaging an abutment 0n one of the last parts, said abutment being adapted to pass through a slot in each of said links, and said spring being so arranged that it is U- shaped, the free end of the spring having a hook bearing against the abutment, and its other end carried in a j aw in the free end of the lever.

12. In alast, a toe part and a heel part, a pair of links lspaced from one another pivotally mounted on one of said parts at one end and pivotally mounted on an angular lever at the Vother end, means for pivotally mounting said lever on one of the last parts, said lever being adapted to extend. labove said links, a spring suspended :from the end of said lever passing downwardlyt'o a point between said links, and an abutment engaging said spring at its Jfree end, said abutment passing through slots in said links.

13. In a last, a toe part and a heel part, a pair of links spaced from one another pivotally mounted on one of saidparts at one end and pivotally mounted on an angular lever at the other end, means for pivotally mounting said lever on one of the last parts, said lever being adapted to extend above said links, a spring suspended from the end of said lever passing downwardly to a point between said links, and an abutment engaging said spring at its free end, said abutment passing through slots in said links, and said lever being positioned between said links.

14. In a last, a toe part and a heel part, a pair ol links spaced from one another pivotally mounted on one oic said parts at one end and pivotally mounted on an angular lever at the other end, means for pivotally mounting said lever on one of the last parts, said lever being adapted to extend above said links, a spring suspended from the end of said lever passing downwardly to a point between said links, and an abutment engaging said spring at its Jfree end, said abutment passing through slots in said links, Said lever being positioned between said links, and said links being so constructed that they are arched to clear the pivotal means for supporting the lever in one of the last parts.

15. In a last, a toey part and a heel part, means to permit of said parts rocking on'one another, links connecting said parts, an anchor pin inone part for supporting the links at one end, an anchor Vpin in the other part for pivotally supporting a lever below said links, a lever pivoted on said last partY located between said lin is, means for pivoting said links on said lever, a spring suspended from the free end of said lever having its free end located between said links, and an abutment, said abutment projecting through said links and spaced therefrom, the centers of said first mentioned anchor pin and the point of pivotal connection of the links with GEORGE CLAUSING.

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