US1570613A - Last - Google Patents

Description

Jan. 26 1926.

.G- CLAUSING LAST Filed May 18, 1925 'Arrdmeva v:to another anchor pin;

Patented Jan. 26, 192.6.

' UNITED STATES P 'lE-NT. OFFICE.

GEORGE CLAUSING, or ron'rsmonrn, OHIO, AssIGNoa To THE VULCAN. LAST GOM- PANY, or roarsivronrn, OHIO, A. CORPORATION or omo.

LAST,

Application filed May 18,1925. Serial No. 31,097;

To all whom it may concern: 1

Be it known that I, GEORGE. CLAUsING, a citizen of the .United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in Lasts, of which the following is a specification, reference being had therein to the accompanying draw- My invention relates to lasts and in particular to a last which will stay in either In detail, it is my object to provlde last which will have a combined lever and spring and in which the last parts will be connected together by a link, the link being connected to the last part on one side, by an anchor pin and on the other s detothe lever wh ch car ries the sprmg and 1s connected pivotally It is, a further object to have the spring engage with the first mentioned anchor pin. It is an additional object to have the pivotal point of connection of the link to the lever and the aiichor pin .on which the link is pivoted and against which the spring abuts so arranged that a line drawn betweentheir centers will pass over the center of ,movement of the last parts when they are moved from one position to the other.

Referring to the drawings: Figure 1 is aside elevation partially in section, disclosing the link, lever, and spring mechanism of, the last;

Figure 2 is a plan v1ew partially in section of the link, lever and spring mechanism mounted on the anchor pins which are brokeniaway and shown only for a portion of their length.

Referring-to the drawings in detail, 1 is a toe part having a cut away portion or groove 2, cut in its instep portion, such groove having an outer open end along the rear face 3 of the toe part. Transversely located across this open mouth of the cut away portion 2 and across the rear .face of the last part 1 is a semi-circular groove or vsocket 1 to receive the transverse cylindrical projecting bearing member 5 which cooperates'with the socket toform a knuckle joint. The forward last face 6 of the heel part 'I of the last is cut away so asto permit the last parts to collapse. The lower adjacent faces of the last parts designated 8 and 9 engage when the last is in its expanded position below the knuckle joint to limit the extent, of the expansion. The heel part 01 the last is provided with a cut away slot 10 for receiving the spring and link. Transversely of this cut away portion is located the heel part anchor pinll upon which is mounted the rear end of the links '12 which connects the last parts together. These links are spaced to receive between theinthe lever and spring hereinafter mentioned. These they are pivoted on the stud 13. This stud 13 is carr ed by the lever 14,- one end of which is pivoted on the anchor pin 15 in the toe part of the last which crosses the lower part of-theslot 2 in the toe part of the links proceed forwardly to a point where I last. This lever-above thepin 13 proceeds I forwardlyland' rearwardly in a-gentle curving arm forming a lever arm 16 Which terminates above the anchor. p111 l1 and descends downwardly in the form of a book. 17 around the anchor pinsll and 15 will not, however,

pass over this centerpoint when the parts are moved.

It will be observed that due to the use of the lever 14 and the lever arm 16 it is pos sible to get considerable leverage ;of the spring 17 and to place that spring solely within theheel part and at the point where it will have the maximum elfect. The lever and spring are. prevented from turning by being embraced between the links 12 as will be more clearlyseen in Figure 2.

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. 1

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

' 1. In a, last, a toe part and a heel part adapted to rock one on the other, a link joining said parts, an anchor pin in one last partsupporting the link at one end,a

other end, an anchor pin in the other last part for supporting said lever, and means attached to said lever projecting from said lever in one last part to a point within the other last part for supporting a spring, and a spring engaging said first mentioned last part.

2. In a last, a toe part and a heel part adapted to rock one on the other, a link joining said parts, an anchor pin in one last part supporting the link at one end, a lever pivotally supporting the link at its other end, an anchor pin in the other last part for supporting said lever, and means attached to said lever projecting from said lever 1n one last part to a point within the other last part for supporting a spring, a spring engaging said first mentioned last part, said engagement being effected through the spring bearing upon the anchor pin in said part. I

3. In a last, a toe part and a heel part adapted to rock one on the other, an anchor pin transversely arranged in each of said parts, a link pivoted on one of said anchor pins, a lever pivoted on the other of sald anchor pins, said lever being projected nor-- mally forwardly over the anchor pin, said link being connected to the end of said lever at its forwardmost port-ion, a suspension member extending from the end of the lever rearwardly to a pin adjacent the other lastpart, and a spring suspended therefrom engaging with the first mentioned anchor pin.

4. In a last, a toe part and a heel part adapted to rock one on the other, an anchor pin transversely arranged in each of said parts, a link pivoted on one of said anchor pins, a lever pivoted on the other of said anchor pins, said lever being projected nor mally forwardly over the anchor pin, said link being connected to the end of said lever at its forwardmost portion, a suspension member extending from the end of the lever rearwardly to-a pin adjacent the other last part, and a spring suspended therefrom engaging with the first mentioned anchor pin, said parts being so arranged that a line drawn from the center of the first anchor pin to the point of pivotal connection of the link to the lever will pass over the center of movement of the last parts when they move from one position to the other.

5. In a last, a toe part and a heel part adapted to rock one on the other, an anchor pin transversely arranged in each of said parts, a link pivoted on one of said anchor pins, a lever pivoted on the other of said anchor pins, said lever being projected normally forwardly over the anchor pin, said link being connected to the end of said lever at its forwardmost portion, a suspension member extending from the end of the lever rearwardly to a pin adjacent the other last part, and a spring suspended therefrom engaging with the first mentioned anchor pin, said suspension member being resilient.

6. In a last, a toe part and a heel part having an intermediate knuckle joint to enable them to rock one upon the other and cut away portions opening towards each other, links arranged in said cut away portions, an anchor pin located in each of said last parts passing through said cut away portions transversely thereof, said links being pivoted on one side upon one of the anchor pins and at the other upon a transverse pin carried by levers, a transverse pin, levers carrying said pin, said levers being pivoted on the other of said anchor pins, and a rearwardly extending arc-h shaped suspensionmember carrying an S-shaped spring at its free end adapted to engage with the first mentioned anchor pin.

7. In a last, a toe part and a heel part having an intermediate knuckle joint to enable them to rock upon one another and cut away portions opening towards each other, links arranged in said cut away portions, an anchor pin located, in each of said last parts passing through said cut away portions transversely thereof, said links being pivoted on one side upon one of the anchor pins and at the other upon a transverse pin carried by levers, a transverse pin, levers carrying said pin, said levers being pivoted on the other of said anchor pins, and a rearwardly extending arch shaped suspension member carrying an S- shaped spring at its free endadapted to engage with the first mentioned anchor pin, said parts being so arranged that the point of connection of the links with the first anchor pin and the point of connection of the links with the lever are so located that a line drawn between their centers will pass over the center of movement in the knuckle joint of the last parts when they are moved from one position to the other.

8. In a last, a toe part and a heel part having an intermediate knuckle joint to enable them to rock one upon the other and cut away portions opening towards each other, links arranged in said cut away portions, an anchor pin located in each of said last parts passing through said cut away portions transversely thereof, said links being'pivoted on one side upon one of the anchor pins and at the other upon a trans verse pin carried by levers, a transverse pin, levers carrying said pin, said levers being pivoted on the other of said anchor pins, and a rearwardly extending arch shaped suspension member carrying an S-shapedspring at its free end adapted to engage with the first mentioned anchor pin, said parts being so arranged that the point of connection of the links with the first anchor pin and the point of connection of the links with the lever are so located that a line drawn between their centers will pass over the center of movement in the knuckle joint of the last parts when they are moved from one position to the other, said links being so arranged on either side of the said lever. and said 3- shaped spring as to prevent thelever and spring from turning upon their supports laterally.

9. In a last, a toe part and a heel part adapted to rock upon one another, means comprising a non-yielding link and lever arm to connect said parts together as they rock one upon the other, yielding means attached to and forming an integral part of said lever arm engaging the heel part tending to maintain said parts in either expanded or collapsed position, said link and lever arm forming a lever arrangement for increasing the effect upon said yielding means on the movement of the parts from one position to the other.

In testimony whereof, I afiix my signature. v

GEORGE CLAUSING.

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