US233177A

US233177A - Lasting-jack

Info

Publication number: US233177A
Authority: US
Publication date: 1880-10-12
Anticipated expiration: 1897-10-12

Description

(No Model.)

'G. W. WILLEY.

Lasting Jack.

N0. 233;177. Iiy. [Patented Oct. 12,1880.

UNITED STATES PATENT FFICE.

GEORGE W. WILLEY, OF ATHOL, MASSACHUSETTS.

LASTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 233,177, dated October 12, 1880.

Application filed June 7, 1880. (No model.)

To all whom it may concern Be it known that I, GEORGE W. WILLEY, of Athol, of the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Lasting-Jacks; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a side view, and Fig. 2 a vertical and longitudinal section, of a jack as improved by me, the nature of my invention be ing duly set forth in the claims hereinafter presented. Fig. 3 is a side view of the jackjournal with its clamp-screw and the stud thereto. Fig. 4 is a top view of the notched annulus or collar, to be hereinafter described.

In such drawings, A denotes a lasting-jack as commonly constructed, it being provided with a tapering journal, to, to enter and turn in a corresponding bearing, b, made in an orbital arm, B. Beneath the said bearing there is in the said orbital arm a cylindrical chamber, 0, open at bottom, and opening into the bearing by a circular aperture, d, down through which a clamp-screw, 6, passes. This clampscrew has extending from its shank a stud, f, there being a notch, g, in the bottom of the bearing, and opening into the aperture (1, to allow of the stud being moved with the screw a short distance into the chamber 0, or, in other words, into a notch, h, made as shown in Figs. 2 and 4, in a metallic collar or washer, i, arranged in they upper part of the chamber 0, and encircling the shank of the screw. This collar I prefer to make tapering, as shown in section at k in Fig. 2, and to have the tapering part bear against a counter-tapered bearing, 6, at the top of the chamber. A short helical spring, m, is arranged in the chamber 0, encompassing the screw, upon Whose threaded part is screwed a nut, G, to bear against the spring and force itup to the collar. By reason of the stud entering the notch of the collar it will be seen that on revolving the jack the collar will be caused to turn with it and in the chamber 0, the spring and nut also revolving with the collar. Were it not for the stud and the notched collar and the springbore directly against the top of the chamber, the nut would be liable to be either unscrewed from the screw or set up too far thereon in case of the jack being revolved; but the notched collar and its actuating-stud operate to prevent such loosening or tightening of the nut.

The orbital arm B, at its upper end, is provided with ajournal, m, whose axis produced is at a right angle with that of the jack-journal produced. The said journal m turns in a corresponding bearing in the upper part of a standard, D, for supporting the orbital arm, and fixed on the part of the journal that projects beyond the standard is a cylinder or head, E, provided on its inner end with a series of radial notches, n, arranged at equal distances apart around it.

There is suitably adapted to the standard a bolt, F, provided with a spring, G, to force the bolt upward, in order to cause it to enter either of the notches n'when such notch is directly over the bolt, or in a situation to receive it. The bolt is to be provided with a pedal and a proper attachment thereto, to enable an operator while using the jack, and when necessary, to force with his foot the bolt down out of a notch, in order for the orbital arm to be moved more or less in its circle of revolution, as circumstances may require, the bolt serving, with one of the notches, to hold the arm firmly in position.

The devices for sustaining the jack on the orbital arm enable such jack to be revolved independently of the arm, and with steadiness and more or less friction, as may be required.

I have recently applied for a patent for the combination of a rotary lasting-jack, an orbital curved arm, and a supporting-standard very like what is heretofore described; therefore I herein do not claim such, broadly; but

What I do claim as my present invention is as follows:

1. The orbital arm B, provided with the journal-bearing b, spring-chamber c, notch g, and passage d, arranged as described, in combination with the notched collar 2', the spring m, the out 0, and the rotary jack A, provided with the journal to, the clamp-screw c, and the stud f, extending from the latter into the notch of the collar, all being adapted and to operstandard,and to operatewith abolt,F,adapted ate substantially as set forth. to the standard, and provided with an actuat- 1o 2. The orbital arm B, applied to the jack ing-spring, G, all being as set forth. A, as described, and provided with the tapering journal m, in combination with the standard D, applied to such journal as shown, and with the notched head E fixed to the journal and arranged outside of and against such GEORGE W. WILLEY.

Witnesses:

E. O. \VILSON, J. J. COXETER.