US1697059A - Last - Google Patents

Description

Patented Jan. 1, 1929.

I v 1 OFFICE.

GUY B. FITZ, OF AUBURN, MAINE, ASSIGNOR T0 FITZ -EMPIRE DOUBLE PIVOT LAST COMPANY, OF AUBURN,.1VLAINE, A. CORPORATION OF MAINE.

LAST.

Application filed. December 4, 1926. SerialNo. 152,703.

This invention relates to lasts and is herein disclosed as embodied in'a collapsible last of the type shown in United States Letters Patent No. 784,149, granted March 7, 1905,

on the application of Amos G. Fit-z. v

Lasts of this type are provided with a hinge or bonding mechanism consisting of two links, one above the other and each pivotally .united to the heel part and the forepart at each end One of the links ec-operates witha spring which forces it in such a direction as to tend to extend the last when it is collapsed. Difficulty has been experienced in the last factory in assembling such lasts in that it is di'fiicult to holdthis link against the spring pressure in proper position to permit driving the last of the two pins which go through it. The stiif spring forces it away from the proper position, and it has to be wedged with a curved tool in the last part containing the spring to permit the driving of the pin in the other last part, and then the tool has to be removed. This procedure is wasteful of time, and the slipping of the r tool results in considerable injury to the workmen.

Accordingly, it is an object of the present invention to avoid this difficulty by providing a last bonding mechanism having a spring pressed member and a second member arranged to hold it in assembling position against the spring pressure. In the illustrated last this is accomplished by constructing the links themselves in such manner as to enable the link which does not co-operate directly with the spring to hold the one that does so co-operate in proper assembling position. This is accomplished by providing the former link with an extension beyond its pivot pin which may be wedged up under the latter link to hold it in assembling position.

This and other features of the invention comprising certain combinations and arrangements of parts will be apparent from the following description of a preferred embodiment of the invention shown in the accompanying drawing which shows the last in full lines in collapsed or assembling position and in dotted lines in extended position.

The forepart and the heel part 12, separated by a cut of convenient form, are united by an upper link 14 and a lower link 16 mounted inslots in the last parts. The link 14 is provided with a lug 18 which abuts against the end of a spring 20, tending to throw the link clockwise as seen in the drawand 28, as shown in the drawing and in the Letters Patent referred to.

In assembling the last the spring 20 and the links are first assembled with the forepart. The lower link is put in first, and the spr ng and upper link are then inserted. The spring throws the upper link down against the lower link. The upper link must then be turned counterclockwise and held in some way in the full line position to permit the attachment of the heel part to it, after which thelower link is'pinned in the hole in the heel'part. It has been the custom to hold the upper link temporarily in position to permit the driving of the pin 24 by driving a pin or tool like a curved nail down between the lug 18 and the upper side of the springhole. This is a troublesome operation, the removal of the tool is inconvenient, and its occasional slipping results in loss of time and may injure the workman.

To avoid this difficulty I have provided the link 16 with an extension or lug 32, just long enough to crowd under the lower front edge 34 of the upper link. The upper link is pulled up into proper position, and the lower link is swung clockwise until the extension 32 wedges under the upper link between the pin holes, thus holding it positively in proper assembling position until the pin 24 can be driven. The link 16 is then swung back counterclockwise to its dotted line position and. the last extends under the spring pressure. The driving of the fourth pin through the rear end of the link 16 and the hole 30 affords no difliculty.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a last, a forepart, a heel part, and a bonding mechanism connecting them comprising two links and a spring arranged to act on one of the links in a direction to tend to extend the last, the other link being constructed and arranged to hold the first-named link in last assembling position against the spring pressure, to facilitate attachment of the heel part to the forepart.

2. In a last, a forepart, a heel part, and a bonding mechanism connecting them comprising two links arranged in the same plane and pivoted in. one last part and a spring in that last part arranged to act on one of the links to extend the last, the other link being constructed and arranged to hold the first-named link in last assembling position against the spring pressure.

3. In a last, a. forepart, a. heel part, and a bonding mechanism connecting them. comprising two links and a spring arranged to act on one of the links to extend the last, the other link being arranged to be wedged under the first-named link to hold it in last assembling position against the spring pressure.

4. In a last, a forepart, a heel part, and a bonding mechanism connecting them comprising two links arranged in the same plane and pivoted in one last part and a spring in that last part arranged to act on one of the links to extend the last, the other link having an extension constructed and arranged to wedge under the first-named link to hold it in last assembling position against the spring pressure.

5. A last comprising a heel part, a. torepart, two links, each pivoted to both last parts and lying one above the other, a spring arranged to throw one of the links in a direction to extend the last, and a lug on the other link, beyond its pivot in the last part containing the spring, constructed and arranged to wedge under the first-na1ned link to hold it in the position corresponding to the collapse of the last, against the pressure of the spring.

6. A collapsible last having a heel part, a forepart, and a bonding mechanism comprising a resilient member. a. second member cooperating therewith to extend the last, and a third member arranged to hold the secondnamed member in last assembling position against the pressure of the resilient member.

7 A last part having two links pivoted thereto and arranged to connect said last part to a complemental last part, and a spring arranged to throw one of the links in a direction to straighten the last after such connection, the other of said links having a lug arranged to be wedged under the spring impelled link to hold it in last assembling position against the spring pressure.

In testimony whereof I have signed my name to this specification.

GUY B. FITZ.

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