US2473044A

US2473044A - Self-locking safety catch

Info

Publication number: US2473044A
Application number: US575982A
Authority: US
Inventors: Yasnor Morton
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-02-03
Filing date: 1945-02-03
Publication date: 1949-06-14
Anticipated expiration: 1966-06-14

Description

June 14, 1949. M YASNQR SELF-LOCKING SAFETY CATCH Filed Feb. 3, 1945 Patented June 14, 1949 UNITED STATES PATENT OFFICE SELF-LOCKING SAFETY CATCH Morton Yasnor, Brooklyn, N. Y. Application February 3, 1945, Serial No. 575,982

1 Claim. 1

This invention relates to an improved safety catch for pins and brooches, and the like, and one of its objects is to provide a spring pressed safety catch, which can be forced to release or open position, by the pressure of the shank of the pin against the side of the safety catch, and which will then automatically hold th pin in locked position.

Another object of the invention is the provision of a spring pressed safety catch or retainer, with a U-shaped frame, which is pivotally supported against the sides of a keeper by trunnions struck from the sides of the keeper, to close the through or pin entrance of the keeper, and which will yield to open position against the keeper, so as to allow a free entrance for the shank of the pin.

With the above and other objects in view the invention consists in certain new and useful constructions, combinations, and arrangements of parts, clearly described in the following specification, and fully illustrated in the accompanying drawings, in which- Fig. l is a side view of a brooch provided with the improved safety catch.

Fig. 2 is an end view of the safety catch, closed.

Fig. 3 is a similar view, showing the catch open.

Fig. 4 is a detail horizontal sectional view, taken on line 44 of Fig. 2, looking in the direction of the arrows.

Fig. 5 is a sectional View, taken on line 5-5 of Fig. 3, looking in the direction of the arrows.

Referring to the accompanying drawings, which illustrate the practical construction of my invention, 5 designates a decorative or face plate of a brooch, or other pin bar, which ma be of any form of construction, and which is provided near one end with hearing lug 6, on which the eye I of the pin shank 8 is pivoted. This pin shank is provided with the usual pointed end 8a.

On the opposite end of the brooch my improved safety catch I0 is located. This safety catch includes a keeper H, which is in the form of a narrow strip of metal, and is formed with a base attaching flange l2, and with an overhanging loop l3. The sides of the keeper ll are formed with integral trunnions I 4.

A spring I 5, formed of fiat spring stock, and provided with a U-shaped loop IS on its lower end, is secured against the keeper H by means of the lug [1, which is struck from one side of the keeper and folded over, as 5, against the spring, thereof to the keeper.

A U-shaped rocker or frame [8, which includes shown in Figs. 4 and so as to secure the lower end the side wings I 9 and 20, and the intermediate and connecting safety catch bar or member 2 l, is hinged by the side Wings to swing on the trunnions i l, each of these Wings having bearing holes to receive the trunnion it engages. The upper end of the bar or member 2i is slightly deflected at 2! a, so as to have full contact with the depending end Hit of the loop l3, and the upper end of the spring 15 is also formed with a bent end portion l5a, which bears against the inner surface of the member or bar 2|, and which normally presses the outer surface of the bar or member 29 against the inner surface of the depending end l3a of the loop l3, so as to maintain the pin entrance 22 between the loop end Mia of the keeper ll normally closed.

The wing I9 of the safety catch frame or rocker i8 is provided with an integral lever arm 23, so that the frame of the safety catch may be manually pressed to open position, against the resistance of the spring l5. This is one way of opening the frame l8. The entrance 22 may also be opened by pressing the end portion of the pinshank 8 against the side of the rocker or frame I8, to overcome the resistance of the spring l5. When this is done the intermediate bar 21 of the rocker It forms a guiding surface for the shank of the pin, which can be moved over the rocker to a point above it, so as to allow the rocker to close by the reaction of the spring l5, to assume the position shown in Fig. 2, when the pin shank will be confined in the loop I 3 of the keeper II.

It is seen, therefore, that my improved safety catch is normally closed or in locked position, so that the shank of the pin cannot be accidentally displaced from under the keeper, and that to release the pin shank, it is necessary to manually force the safety catch to open position, but that it automatically returns to closed or looking position, as soon as manual pressure is released from the swinging or rocking frame Hi.

It is understood that various changes in the details of construction, their combination and arrangement may be resorted to, within the scope of the invention, as defined by the claim hereof.

Having described my invention, I claim as new:

A self-locking safety catch, comprising a bar having a base and a hook overlying the base and spaced therefrom, the bar being formed with integral trunnions on the opposite side thereof, a guard having side wings provided with hearing openings which receive the trunnions and provided with a terminal portion which engages the inner side of the hook, said first-named bar having an integral lug disposed in clamping relation thereto, and a fiat spring having a hooked lower REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Knaus Dec. 3, 1901 Seng May 2, 1905 Goozey Apr. 16, 1918