US620879A - Nut-lock - Google Patents

Description

No. 620,879. Patented Mar. l4; I899. H. B. BAUMGARDNEB.

UNITED STATES PAT T" OFFICE.

HARRY B. BAUMGARDNER, OF POTTSGROVE, PENNSYLVANIA.

N UT-LOCK.

SPECIFICATION forming part of Letters Patent No. 620,879, dated March 14, 1899. Application filed November 23, 1898. Serial No. 697,236 (No model.)

To all whom it may concern:

Be it known that I, HARRY B. BAUMGARD- NER, a citizen of the United States, residing at Pottsgrove, in the county of Northumberland and State of Pennsylvania, have invented a new and useful Nut-Lock, of which the following is a specification.

This invention relates to an improved nutlock; and it has for its object to provide simple and efficient means for securely locking the nut on the bolt and also for releasing the same when it is desired to remove the nut from the bolt. I To this end the present invent-ion consists in the combination and arrangement of parts, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the drawings, Figure l is a perspective view of a bolt and nut having the improvements applied thereto. Fig. 2 is a longitudinal sectional view thereof. Fig. 3 is an elevation of the nut, showing the spring-pawl disengaged. Fig. 4 is a detail perspective view of the disengaging thumb-piece.

Corresponding parts are denoted by like reference characters in all the figures of the drawings.

' Referring to the accompanying drawings, 1 designates an ordinary threaded bolt having a plurality of longitudinal grooves 2 formed therein, and an ordinary nut 3. This nut is provided across one face thereof and to one side of its threaded bore with a recess 4, opening into the threaded bore, as at 5, intermediate its ends. The pawl is preferably formed of a single length of spring metal bent intermediate its ends, forming the spring-pawl 6 and the attaching-arm 7. The end of the pawl is preferably beveled, as at 8, to insure a positive engagement with the grooves of the bolt. The arm 7 is seated in the recess 4, extending the entire length thereof, and the free end of the spring-pawl extends through the opening 5 and into the bore of the nut. To hold the pawl securely in the recess, the ends of the latterare upset against the pawl, which provides "a simple and effective means for mounting the spring-pawl. The nut being thus equipped with the pawl may be screwed upon the bolt; but a reverse movement of the nut will engage the free end of the pawl with one of the grooves 2, as will be understood,

and prevent further turning of the nut in the latter direction. To disengage the pawl, a releasing-key in the form of a thumb-piece is provided, which is shown in detail in Fig. 4. This releasing-key is formed from a single length of metal comprising a horizontal body 9, having one end 10 bent at approximately right angles thereto and forming an operating-lever, and the other end is formed into a stop-shoulder 11, extending in the opposite direction from the lever 10. One edge of the shoulder 11 is curved or beveled, as at 12. The body 9 is mounted in a groove or notch 13 formed transversely across the recess 4 and beneath the spring-pawl 6, the stop-shoulder engaging against the inner edge of the pawl, with the lever 12 extending across the face of the nut. The pawl may be disengaged by throwing the lever 10 away from the bolt, which turns the body of the thumb-piece under the pawl and, acting as a cam, lifts the end of the pawl out of the groove in the bolt and thus releases the nut. The shoulder 11 is disposed across the inner edge of the pawl and prevents displacement of the thumbpiece, and the beveled edge 12 is normally disposed toward the bolt to permit of the shoulder turning with the thumb-piece.

By reason of the retaining connection between the pawl and the releasing-key the latter is normally carried by the nut, thereby always being in position for use.-

By the combination and arrangement of the several parts as herein set forth a simple and improved means is provided for disengaging the pawl, and this means is permanently carried by the nut.

Changes in the form, proportion, and minor details of construction and arrangement may be made without departing from the spirit and scope or sacrificing any of the advantages of the present invention.

Having thus described the invention, what is claimed is- 1. The combination in a nut-lock comprising a bolt having a groove therein, and a nut having a spring-pawl adapted to engage the groove, of an axially-movable releasing-key having a retaining connection with the springpawl whereby the key is normally carried by the nut, and accidental displacement thereof is prevented, and the key being adapted to exert a cam action against the pawl, substantially as shown and described.

2. The combination in a nut-lock comprising a bolt having a plurality of longitudinal grooves formed therein, and a nut having a spring-pawl, of a oross-sectionally flat rocking releasing-key com prising a body,a thu mblever at one end, and a stop-shoulder at the other end thereof, the body being mounted transversely beneath and in engagement with the pawl, the stop-shoulder engaging the inner edge of the pawl and the lever extending across the face of the nut, the engagement of the shoulder with the pawl forming a means whereby the releasing-key is normally held in place, substantially as and for the purpose set forth.

3. The combination in a nut-lock comprising a bolt having a plurality of longitudinal grooves formed therein, a nut having a recess provided in one face,and a spring-pawl mounted in said recess, of a rocking thumb-piece comprising a body having a thumb-lever at one end and a stop-shoulder at the other end, one edge of the shoulder being rounded or beveled, the body of the thumb-piece being mounted in the recess transversely beneath and engaging the pawl, the stop engaging the inner edge thereof and the lever extending across one face of nut, said thumb-piece being adapted to be turned'to disengage the pawl, the beveled portion of the shoulder facilitating the turning thereof, substantially as shown and described.

4:- In a nut-lock, the combination with a bolt having a longitudinal groove formed therein, and a nut having a recess formed in its outer face and intersecting the bore thereof, and provided with a notch formed transversely in the lower Wall of the recess, and a pawl mounted in the recess, of a rocking releasing-key having a stop-shoulder at its inner end, the key being mounted in the notch of the recess beneath and in engagement with the pawl, and the stop-shoulder engaging the inner edge thereof, whereby the key is normally carried by the nut, substantially as shown and described.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

HARRY B. BAUMGARDNER.

Witnesses:

THOMAS J. PAINTER, J. W. V AN KIRK.

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