US150363A - Improvement in nut-locks - Google Patents

Description

UNITED STATES PATENT OFFICE CHRISTOPHER O. SHELBY, OF SPRING VALLEY, NEW YORK.

y IMPROVEMENT IN NUT-LOCKS.

Specification forming part of Letters Patent No. 150,363, dated April 28, 1874 application tiled December 12, 1873.

To all whom it may concern:

Beit known that I, GHRlsTor'HER O. SHEL- BY, of Spring Valley, in the county of Rockland and State of New York, have invented a new and Improved Nut-Lock for Securing the Bolts of Fish-Plates; and I do hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawings forming part of this speciiication, in which- Figure l is a side elevat-ion, and Fig. 2 a horizontal section. v

Similar letters of reference in the accompanying drawings denote the same parts.

This invention has for its object to provide means for locking the nuts of sh-plates in a cheap, efficient, and expeditious manner; and to this end it consists in a perforated elastic strip of metal, so applied to the bolts of a fish-plate as to be conned under the nut at each end, and cover the central nuts. The perforations of the strip' are so located as to correspond vwith and tit over the bolts, and the ends of the strip are cut and bent so as to lock the end nuts, which confine it to the fish-plate, while the central portion of the plate, covering the central nuts, holds them in place, all of which I will now proceed to describe.

In the drawings, A represents the tishplate; B, the bolts, and O the nuts, all of the usual construction. D represents an elastic strip ot' thin metal, suoli as band, hoop, or sheet iron, provided with perforations d, adapted to tit over the bolts B, as shown.

In applying my invention, the ish -plate is secured by turning all thenuts, excepting one at each end. The elastic strip l) is now placed on the bolts over the nuts that are applied, and the end nuts are turned to their places outside of the strip, bending the ends of I the latter inward and clamping them against the fish-plate. The elastic strip is thus sethat the latter are securely locked. By this construction, the elastic locking-plate D acts as a bow-spring, the force or elasticity of the spring pressing directly on the outer surfaces of the interior nuts to hold them in place, and should the interior nuts, from the passage of trains or other cause, move or become partially unscrewed, the elastic or bowshaped spring D would then press with greater force on the outer surface of the interior nuts, thereby preventing any derangemeint of the parts. The ends of the strip are niclred or cut, as shown, and bent up against the end nuts, thereby locking the latter. l

I am aware that a strip of metal provided with orifices adapted to tit over the nuts of a sh-plate has been employed; but this method is not as convenient as mine, inasmuch as the nuts must all be turned so that their' edges will correspond with those of the oritices, in order that the plate may be fitted over them, while in my invention the positions of the nuts are of no consequence, as the strip has only to be iitted over the bolts.

The device is cheap and economical, as it is constructed of thin, inexpensive metal, this kind being` preferable on account of its elasticity.

Having thus described my invention, what I claim as new is The metallic elastic bow-sprin g lookin g-plate D, provided with peri'orations el d., and having its ends turned up, so as to abut against the end nuts when they are screwed down in place on their bolts, and over the metallic plate, in combination with two or moreinte rior bolts, passing through perforations in the metallic bow-spring locking-plate, the latter resting on the upper faces of the inner nuts to prevent them from turning, substantially as described, and for the purpose set forth. CHRISTOPHER O. SHELBY.

Witnesses:

MELVILLE CHURCH, N. K. ELLswORrH.

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