US234912A - And henry g - Google Patents

Description

' (No Moqel.) 2 Sheets-Sheet 1.

H. P. FAIRFIELD. Lasting Machine.

No. 234,912. Patented Nov. 30,1880.-

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N.PE\ERS, PHOT0-L|THOGRAPMR, WASHINGTON. D. c.

(H0 Model.)

Lasting Machine.

N. PETERS. PHOTO-LITHOGRAPNEn. WASHINGTON. D c.

UNrrn STATES Aram* einen@ HADLEY I. FAIRFIELD, OF IVEST MEDFORD, ASSIGNOR TO GORDON MCKAY, OF CAMBRIDGE, MASSACHUSETTS, AND HENRY Cr. THOMPSON, OF MILFORD, CONNECTICUT, TRUSTEES.

I AsTlNe-MACHINE.

SPECIFICATION forming part of Letters Patent No. 234,912, dated November 30, 1880.

Application tiled October l, 1880.

l'o alt whom t may concern:

Be it known that I, HADLEY I). FAIRFIELD, a citizen of the United States, residing at Vest Medford, in the county ot' Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Lasting-Machinesfand I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or gures ot' reference marked thereon, which form a part of this specification.

rI his invention relates 'to lasting 3;machines for boots and shoes, and is an improvement on United States Letters Patent No. 231,076, August' l0, 1880, to which reference may be had.

In ordinary lasting-machines it is customary to employ at the heel of the last a U-shaped quarter-clamp to extend about the qua-rter on the last and hold it in position while the edges ot the upper are turned over by the heel-cri m ping jaws or devices; but in said machines the AU-shaped clamps have never been so constructed and operated as to cause the clamps to impinge the quarter at the ends ot' the usual quarter or counter stiffener upon the last near the shank of the shoe. -In the operation of lasting a shoe it is quite essential to the performance of good work that the quarter at that part where the ends of the usual stiffening for the quarter ends should be forced closely and positively inward near, but just at the rear of, the shank of the shoe, and be there held while the edges of the shoe being lasted are tacked or secured to the inner sole. To accomplish this I have combined with the quarter clamp suitable devices, preferably arms or levers, which at the proper time are automatically moved and caused to vact upon the quarter-clamp near its ends, thus closing the open mouth or end of the said clamp, forcing its ends together against the quarter, causing the ends of the clamp terminating at the ends of the quarter or counter stiffening just at the rear of the shank to thus positively forcethe quarter and counter stiffenin g against (No model.)

the last quite up to or into the shank, thus fitting and shaping the quarter and counter to the contour of the heel of the last, and holding it there while the edges of the shoe upper and quarter are turned over upon the inner sole, thus preventing bulging at the shank. These arms or levers, acting upon the quarter-clamp, also determine and maintain the last in central position in the machine.

In heavy brogau-work, where the counterstii'ening isvery thick, I lind it of great advantage in mechanical lasting to divide or slot the ends ot' the clamp so as not to bear upon the side of the quarter just at that point or along the line where the uppercurved edge of the quarter-stiftening and quarter contact, to thus permit the ends ofthe clamp to bear upon the quarter near the inner sole, and also at a point beyond the upper edge of the stiff'- ening, thus holding the quarter and last firmly and lavoiding the rocking of the last, as would be the case were the jaws not slotted or cut` away, or shaped at their ends so as not to rest upon the quarter immediately outside the upper edge ot' the quarter-stiienin Figure lis a partial vertical cross-section of sufficient ot' a lasting-machine to illustrate my invention, the parts being considered fully closed together, as at theinward position ofthe usual jaws. Fig. Zrepresents the samein side elevation, a portion ot' one of the usual jawcarriers and pad-actuating levers at the right ot' Fig. l being broken oft' at the top to better show the pads and -the levers or arms for moving the toe -pads and quarter clamps together; Fig. 3, a top view of Fig. l; and Fig. 4, a detail, illustrating the inner member of the quarter-clamp in position on the quarter of a shoe, the broken line showing the usual said patent did not show a quarter-clamp. The quarter-clamp herein shown is composed of an outer U-shaped shell of metal, a sheet,

j', ot india-rubber 'or other elastic material, and an inner shell, g, also of sheet metal. As so far described this quarter-clamp is common and in use. I slot this inner shell, as at et, or otherwise shape or form it that only the portions 2 3 at the lower and upper portions of the shell touch the quarter, the shell being so shaped at its ends as not to bear upon the side of the quarter in the line where the quarter and upper edge of the usual quarter-stitening come together. This construction of theinner shell enables the quarter, both above and below the upper edge of the thick stiffening, to be held iirmly in place in contact with the last.

At the sides of the quarter-clamps I have placed devices, shown as levers It, pivoted at 7L. rIhese levers are provided each with adjusting-screws h2, which, as the levers b are closed by the wedge L, act upon the said screws, and, according to their position, cause the levers It, in contact with the outer shell ofthe quarter'- clamp, to push upon and simultaneously close the ends ofthe said clamp together, thus forcing the quarter land stiti'ener connected with it tirmly against the last quite up to and into the shank of the last, holding the same powerfully during the lasting operation. The toepads L are simultaneously closed upon the n pper at the toe of the last by the levers r. The shank-pads c are fixed with relation to the length ofthe last; but the levers 1 and h, that actuate the toe-pads and quarter-clamps, are fixed upon carriages S Sf, connected and made simultaneously adjustable by means ot' the screw u, thus enabling the said levers to act for shoes and lasts of different sizes, and for rights and lefts, as is particularly described with relation to the toe and shank pads ot' the patent hereinbefore referred to. rIhe rod J (also shown in the said patent) is herein re ciprocated at the proper times through the agency of a toggle-joint, m m2, connected with a link, m3. This link has upon it an adjustable hook, m4, which is acted upon by a pin, 8, of an arm, m5, ofthe main shaft p when it is desired to straighten the toggle and lift the rod. The shaft p has upon it a toothed gear, A, driven by gear B on shaft C, having` a beltdriven pulley, D.

In Fig. 4t the broken line indicates the upper edge of the quarter-stiffener, and it may be either at the inner orouter side ofthe quarter, according to the class of shoe being lasted.

I claiml. In a lasting-machine, the quarter-clamp, combined with means, substantially as described, to close and hold its ends together upon the qua-rter and counter during the lasting operation, substantially as set forth.

2. The quarter-clamp and levers or arms to positively close its ends upon the quarter, and the toe-pads and levers to close them upon the toe and heel ofthe shoe, combined with a screw to simultaneously adjust the said pads to adapt them to lasts and shoes ot' different sizes, substantially as set forth.

3. In a lasting-machine, the quarter-clamp having its inner ends at 2 2 shaped to bear upon the quarter above and below thejunction of the upper edge of the quarter-stiiiening and quarter at the sides of the quarter to hold the quarter tirmly against the last, substair tially as and for the purpose set forth.

In testimony whereof I affix my signature in presence ot' two witnesses.

HADLEY P. FAIRFIELD.

Vitnesses:

GEo. M. FINGKEL, GEO. F. GRAHAM.

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