US1570615A - Last - Google Patents

Description

G. CLAU$|NG- LAST Filed May 28, 1925 y 01g; la///}/// /N VEN Ton QEoRqE CL eus/Nq,

. A TTRNEYS Patented Jan. 26, 1926.

maires `stairss..

PATE NT OFFICE f GEORGE CLAUSIITG, OEPORTSIVIOUTH,

onio, Assis-Non Tomlin vnLonN LAST COM- LAST. Y

Appiieaaon mear/ray 2s, 1925. seriai No. 33,353.

To da/hom it' may concern.'

Be it known that I., GEORGE' CLnUsiNmfa citizen of the United States, residing at Portsmouth, in the county ofScioto and State of Chio, have invented certain'A new and useful Improvements in Lasts, of which thev following is a specification, reference being had therein to the accompanying drawing.`

My invention relates to lasts.

It is the object of my invention to provide a last in which the toe part and heel part are pivoted on one another and are connected by a solid link having springs in the ends thereof torresist movement of the last parts from one position to the other and to vhold the parts in either position yieldingly. Y

Referring to the drawings Figure 1 is an elevation of the last parts partially in section showing the position ofV` the link and springs in expanded position;`

Figure 2 is a similar view` showing the parts when the 'springs are flexed Vas the parts pass overdead 'center or the center of movement; and

Figure Sis a 'section on the line 3-3 of Figure 1.

Referring to the drawings in detail, 1 is a toe part and 2 is a heel part which rockfupon one aizother through a knuckle joint consisting of a transverse projecting circular shoulder 3 and a receiving socket L1. The forward face of theheel part above the joint is cut away as at o. is vertical face 6 which acts as a limiting shoulder for the parts engaging with the shoulder 7 on the toe part. Through these shoulders the expanding movement of the last parts is limited. The forward last part or the toe part is provided with a slot S and the rear part is provided with a slot 9. In these slots or grooves is located the solid link 10. This link has expanded heads 11 with substantially T-shaped slots 12 arranged transversely thereof, anchor pins being located in the bottom of the slots. Such anchor pins are designated respectively 13 and 14. The ends of these slots as at 15 are slightly arched to permit the springs 16 carried between the anchor pins and the endS 15 of the slots to flex vwhen the parts pass over dead center. rIhus the bottoni of the T-shaped slot positions the link with respect to the anchor pin. The sides of the slots Below this joint.

l position the springs 16. The last parts rock about the center 17. The centers of the anchor pins 1S and 14 are so arranged that a line drawn between such' centers is below the center of movement-17 when the parts are in expanded"position and above said point when'they are in collapsed position; said line passes over said center of movement when the parts are moved from one position to the other. Due to the fact that in passingover this dead center the distance ybetween the anchor pins lengtheiis.V

this will cause the springs lto flex and the movement of the parts will be resisted or the parts will `be maintained in positionk yieldingly. i

I prefer toemploy two of such plates 10 side by side havingicoinciding slots and us` ing the same anchor-pins, Vand preferably usinthesame s rind 16.

It will be understood that Idesire to coin- Y prehend within my invention suchvmodifications yas'vmay beV Anecessary tol adapt it tok varyingconditionsand uses. f

I-Iaving thus fullyl described myv invention, what I claim as new and desire tov secure by Letters Patent, is

1. In a last, a toe part and a heel part, a link connecting lsaid parts, and yielding means comprising vertically arranged spring plates yseparably mounted in the ends of said link yto resist theinovement of the last parts from vexpanded or collapsed positions.

`2. 'In last, a toe part and av heel part, a link connectingsaid parts, yielding means comprising vvertically arranged spring vplaies separably mounted in the ends of said link to resist the movement of the last parts from expanded or collapsed positions, and means to support said link arranged in each of said last parts, said means being so arranged that the lines drawn between the centers thereof will be to one side of the center of movement of the last parts in either eX- panded or collapsed position of the parts.

8. In a last, a toe part and a heel part adapted to rock one upon the Vother about a center of movement, an anchor pin in the heel part, an anchor pin in the toe part, a link mounted on said pins, said link having ay T-shaped slot at each end thereof with the pins in the base of the slots normally, and vertically arranged spring plates arranged in said slots between the pins and the ends of the link, said pins engaging with said spring plates, said slots being sufliciently cut away to permit of the flexing of the springs when the pins engage therewith upon the movement of the parts from expanded or collapsed positions.

4. In alast, a toe part and a heel part adapted to rock one upon the other about a center of movement, an anchor pin in the heel part, an anchor pin in the. toe part, a link mounted on said pins, said link having a T-shaped slot at each end thereof with the pins in the base of' the slots normally, vertically arranged spring plates arranged in said slots between the pins and the ends of the link, said pins engaging with said spring plates, said slots being suiiciently cut away to permit of the flexing of the springs when the pins engage therewith upon the movement of the parts from expanded or collapsed positions, said pins being so arranged that a line drawn between their centers will be to one side of the center of movement of the parts in either expanded or collapsed position.

5. In' a last, a toe part and a heel part adapted to rock one upon the other about a common center of movement, links connecting said parts, an anchor pin in each of said parts supporting said links, T- shaped slots in which said pins are located in the ends of said links, said slots and said links coinciding, and a. common vertically disposed spring plate arranged in each end of said links engaging with said pins whereby said springs are flexed when the parts are moved from expanded or collapsed positions.

6. In a last, a toe part and a heel part adapted to rock one upon the other about a common center of movement, links connecting said parts, an anchor pin in each of said parts supporting said links, T-shaped slots in which said pins are located in the ends of' said links, said slots and said links coinciding, and a common vertically disposed spring plate arranged in each end of said links engaging with said pins whereby said springs are flexed when the parts are moved from one position to the other, said pins being arranged so that the centers thereof are to one side of the center of movement in either expanded or collapsed position.

7. In a last, a toe part and a heel part adapted to rock one upon the other about a center of' movement, an anchor pin in the heel part, an anchor pin in the toe part, a link mounted on said pins, said link having a T-shaped slot at each end thereof with the pins in the base of the slots normally, and vertically arranged spring plates ar-v ranged in said slots between the pins and the ends of the link, said pins engaging with said spring plates, said slots being Sufficiently cut away to permit of the flexing of the springs when the pins engage therewith upon the movement of the parts from expanded or collapsed positions, the pin in the heel part being closer to the center of movement than the pin in the toe part.

8. In a last, a toe part and a heel part adapted to rock one upon the other about a center ot' movement, an anchor pin in the heel part, an anchor pin in the toe part, a link mounted on said pins, said links hav-` ing a T-shaped slot at each end thereof with the pins in the base of the slots normally, and vertically arranged spring plates arranged in said slots between the pins and the ends of the link, with said spring plates, said slots being snfiiciently cut away to permit of the flex# ing of the springs when the pins engage therewith upon the movement of the parts from expanded or collapsed positions, said links having expanded heads to accommodate said springs, slots and pins.

In testimony whereof, I aflix my signature.

GEORGE CLAUSING.

said pins engaging

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