US543975A - Charles w - Google Patents

Description

' (No Model.)

0. W. W; BALL. LOOK FOR scmaw' STUDS.

NrTn iili STATES CHARLES W. W. BALL, OF NEW YORK, N. Y.

LOOK FOR SCREW-STUDS.

STPECIFICATION forming part of Letters Patent No. 543,975, dated August 6, 1895.

Application filed April 15, 1895.

To all whom it may concern.-

Be it known that 1, CHARLES W. W. BALL, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Looks for Screw-Studs, of which the following is a specification.

The object of my invention is to provide a new and improved lock for screw-studs, which is simple in construction, can readily be applied on and removed from screw-studs of all kinds, and which holds the stud firmly and securely and prevents pickpockets from unscrewing the stud or pulling it out.

The invention consists in a lock formed of two shanks mounted'to swing in substantially parallel planes, each shank being provided with a notch in its inner edge at about half its length.

The-invention also consists in details of construction, as will be fully described hereinafter, and'finally pointed out in the claims.

In the accompanying drawings, forming a part of this specification, and in which like letters of reference indicatelike parts in all the'views, Figure l is a plan view of my improved lock for screw-studs, the same being shown opened. Fig. 2 is a similar view of the same partly closed. Fig. 3 is a similar view of the same closed, the stem of the stud being shown in section. Fig. t is a side view of the same and a screw-stud on which it is applied. Figs. 5 and 6 show the device made of wire.

The improved locking device is composed of two sheet-metal blades or shanks A A, which are hinged or pivoted to each other at the ends a to swing in substantially parallel planes and so that one blade can be swung over the other. Each blade A A is provided at about half its length with a recess or notch B in its inner edge, the outer corners of the notches being slightly rounded off. The outer or free ends of the blades are rounded or bent outward, as shown at C, to facilitate inserting the finger-ball or end of the finger for the purpose of raising and swinging the blades apart when the device is to be opened. The blade A is provided along its inner edge and at or near the free end of the blade with a shoulder or flange D, which is preferably slightly inclined or beveled in the direction Serial No. 545,716- (No model.)

from the inner end of the blade toward the free or outer end.

The lock is applied and removed in the following manner: The screw part E of the stud F is screwed through the aperture in the shirt G (shown in dotted lines) in the usual manner. The lock in open position is placed against the back of the shirt-bosom in such a manner that the shank or stem H of the stud rests in the notch B of the blade A, and then the two blades are moved toward each other in such a manner that that part of the blade A between the hinge aand its notch B passes under that part of the blade A between its notch B and the hinge, and that part of the blade A between the-notch B and the free end of the blade A passes over that part of the blade A between its notch B and the free end of said blade, as shown in Figs. 2 and 3. The blade A in coming into this position passes over the flange D on the blade A, and the outer edge of the said blade A now rests against theinner edge of said flange, and thereby the blade A is locked in place and the two blades are locked together on the stem or shank H of the stud. As part of the blade A is below and part of the same above the blade A the two'blades are also interlocked, besides being locked by the flange D.

To remove the lock the end of the finger is inserted between the bent free ends 0 of the two blades and the blade A lifted a short distance from the blade A, whereupon the blades are swung from each other and into the position shown in Fig. 1, when the lock can be removed from the stud.

As shown in Figs. 5 and 6, the device may bemade of wire, and in this case it can be made of a single spring-wire at, having end buttons 0. It operates and looks like the device shown above.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A look for screw studs composed of two shanks mounted to swing in substantially parallel planes each shank being provided with a notch in its inner edge at about half the length of the shank and one of said shanks being provided with a projection that can engage an edge of the other shank, substantially as herein shown and described.

together by spring tension when one shank is folded over the other, substantially as herein shown and described.

In testimony that I claim the foregoing as my invention 1 have signed my name, in presence of two witnesses, this 9th day of April, 1895.

CHARLES W. W. BALL.

Witnesses:

OSCAR F. GUNZ, N. M. FLANNERY.

Images