US142990A - Improvement in machines for burnishing the shanks of boots and shoes - Google Patents

Description

A. c. CAREY. Machines for Burnishing theShanks of Boots and Shoes.

No. 142,990, Patented Septemb er23,l873.

NITED STATES PATENT Orrron.

AUGUSTUS c. CAREY, OF MALDEN, ASSIeNoR T0 HIMSELF ANn DEAN VPEABODY, OF LYNN, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR BURNISHING THE SHANKS OF BOOTS AND SHOES.

Specification forming part of Letters Patent No. 142,990, dated September 23, 1873; application filed August 25, 1873.

To all whom it may concern Be it known that I, AUGUSTUS O. CAREY, of Malden, Middlesex county, Massachusetts, have invented certain Improvements in Machines for Burnishing the Shank Portion of the Soles of Boots and Shoes, of which the following is a specification:

On the 12th day' of March, 187 2, Letters Pat ent of the United States numbered 124,479 were issued to myself and James K. Blanchard and Frederick S. Hunt for a machine for polishing or burnishing the bottoms of the shanks of boot and shoe soles, the principle of which machine consisted. in the employment of a burnishing-tool properly supported or mounted and operated, and moving in a reciprocating backward and forward path longitudinally of a stationary last or jack, which supported the boot or shoe. In practical operation of this machine, I have found that in mens work, in which the sole is comparatively flat, the reciprocating burnisher is all that is desired; but in womens work, in which the curvature or concavity of the sole is very much greater, the burnisher, traveling in a path nearly horizontal, does not adapt itself readily to such deep curvature or depression, but is liable to pass over without effectually burnishing some portions of the shank. To provide a remedy for this difficulty is the purpose of my present invention; and in carrying out the same I adopt a machine in general characteristics similar to that shown in Letters Patent before named, but I suspend the burnishing-tool over the jack from or upon a rocker-shaft, or otherwise apply it in pedestal, bearing at top a horizontal tablet or bed-plate, B,'upon one rear corner of which bed-plate a standard, 0, is erected, within the upper part of which a horizontal driving-shaft,

D, is mounted, such shaft carrying upon its inner end a crank or crank-wheel, E, to the Wrist-pin of Which the rear end of a horizontal pitman, F, is pivoted, the front extremity of such pitman being in turn pivoted to a stud or boss, G, erected upon the center of a'horizontal rock-shaft, H, which is mounted in vertical slots at a formed in perpendicular standards I I erected upon the front end of the table B, the rock-shaft H being disposed at some considerable elevation above and transversely of the bed-plate, and parallel to the driving-Shaft D. To each extremity or journal of the rock-shaft or beam H, I pivot the end of one of two rigid rods, J, the lower extremity of such rods being attached to opposite ends of a cross-bar, b, making part of a treadle or pedal, 0, which is disposed at the base of the pedestal of the machine, and pivoted to the rear portion thereof in a suitable manner, the foot-rest d of suchpedal being below the front end of the tablet B, and in a convenient position for the foot of the operator, the pedal, and consequently the rock-shaft and burnishing-tool, being elevated to their highest position by the action of a coiled spring, f, or its equivalent, which is secured to the pedal and tablet, as shown in the drawing.

The jack herein shown for supporting the boot is substantially the same as that shown in Letters Patent before referred to, and consists of a horizontal last, 9, pivoted or swiveled to the upper part of an upright post, h, in such manner as to be susceptible of freedom of motion, either in a longitudinal tilting direction ora lateral rocking one, while the post h is mounted upon the top of a sliding rest or plate, z', disposed and slidin g longitudinally upon the top of the tablet B and below the burnishing-tool, such plate *5, and with it the jackor last, being so situated with re spect to the said tool that the jack may be advanced toward the workman and from the immediate vicinity of such tool, in order to receive a boot, and having received a boot to be pushed back below the tool into such a position'as to be operated upon by the latter when lowered in contact with it.

The operation of this machine will be readily understood, as it will be at once seen that the driving-shaft. being in rotation, and the burnishing-tool describing a series of short vibrations, the workman has only to depress such tool into contact with the shank of the sole to elfcct the burnishin g of the latter, the jack and boot being moved backward and forward, and tilted longitudinally or rocked laterally as the burnishing progresses, until all parts of the shank are equaly well polished, the vertical variations of the tool throughout the curvature of such shank being governed by the treadle or pedal before named. v

The burnishing-tool is to be heated by suitable means, that herein adopted being a gaspipe entering a concavity of the tool, a jet or fianiie of gas imparting the desired heat to such too I claim-;-

1. In mechanism for burnishing the shanks of boot and shoe soles, the combination, with a jack for holding the boot or shoe, of a burnisher, located above or opposite to the sole of the jack, and vibrating upon an axis movable nearer to or farther from the jack, as oocasion demands, and during the continuance of the vibratory movement of 1 the burnisher,

substantially as and for the purposes hereln

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