US1276183A - Safety-catch for pins. - Google Patents

Description

R. V DAVHS.

SAFETY CATCH FOR PINS.

APPLICATION FILED mm. H. 1918.

1,276,183. v Patented Aug. 20, 1918.

v U I TAT S PATENT OFFICE.

To all whom it may concern:

Be it known thatI, RAYMOND V. DAVIS,

rangements and combinations of parts here inafter described in detail and claimed in a succinct manner, reference being had to the accompanying drawing wherein- Figure 1 is a side elevation of the improved safety catch embodied in a bar pin;

Fig. 2 is a transverse section through the pin and depicting the catch in elevation;

Fig. 3 is a fragmentary longitudinal section through the catch end of the pin; and

Fig. 4: is a view similar to Fig. 2 showing the keeper rotated to have its pin seat register with pin-retaining pocket.

Referring to corresponding parts throughout the several views by like characters of reference, the numeral 1 designates the body of the bar pin, 2 the pin part pivoted at one end. 3 of the bar, and 4: thesafety catch constituting the subject matter of the present invention.

This catch comprises a base or pocket portion having side flanges 5 extending outwardly from the upper part thereof to provide a concave, semi-cylindrical easing into which opens the pin-retaining pocket 6 that is formed in the base. The outer end of this concave casing or guard is closed by a transverse end wall 7 in which is secured one end of a shaft 8 that rotatably supports a cylindrical keeper 9. This keeper is mounted concentrically to its guard or casing 5 and has radially formed therein a pin-receiving groove 0r seat 10 which opens through its periphery and is adapted to be alined with the retaining pocket or recess .6 upon rotation of the keeper, the peripheral surface of the latter being corrugated or roughened to facilitate the turning thereof.

In practice, the pointed end of the pin is RAYMOND v. DAVIS, or DENVER, COLORADO.

SAFETY-CATCH FOR PINS.

Specification of Letters Patent. 1Patented Aug, 20, 1918, Application filed January 11, 1918. 'Se1'ia1No. 211,393.

engaged in the outwardly facing seat of the keeper, the latter being disposed substantially as depicted in Fig. 2, and said keeper 1s then rotated to aline its seat with the pocket 6 of the base when the pin is pressed from the seat into the pocket and held therepin out for freemovement about its pivot 3.

To prevent the rotary keeper from turning too freely, or in an unauthorized man ner, the end of the cylinder opposed to the end wall 7 is bored to form a chamber 11 111 which is disposed a coiled, tensioned spring 12 bearing at one end on the end wall 7 and at its opposite end against the keeper so as to frictionally retain the latter in a set position. By varying the tension on the spring, or by the substitution of different spring, the frictional lock may be increased -or decreased accordingly.

The device is simple and eflicient in operation, being a sure lock and having no proecting parts to engage in the wearing apparel. The catch is economical in construction since the base may be stamped from sheet metal and requires only a pin or shaft connection for mounting the keeper thereon.

What is claimed is:

l. A safety catch for pins comprising a base having a concave guard and a pin-retaining pocket opening thereinto, said concave guard provided with a transverse end wall, a shaft secured in the end wall, a cylindrical keeper journaled on the shaft concentrically to the guard and formed with a pinreceiving groove registrable with the pocket of the base, the end of the keeper opposed to the end wall being chambered, and a friction-affording coiled spring arranged in the chamber of the keeper to serve as a friction pocket of the base and designed to receive a pin for carrying it past the guard to and from the pocket.

3. A safety catch for pins comprising a I guard having a pin retaining pocket and an upstanding Wall at oneend, and a keeper rotatably carried by the Wall in overlying relation to the guard and its pocket, and formed With a peripheral seat for receiving the pinto transfer it to the guard pocket, said keeper serving to keep the pin in said guard pocket.

4. A safety catch for pins comprising a guard formed with a pin-retaining pocket,

" and a combined keeper and transfer member formed With a pin-receiving cut-out for receiving the pin to deliver it to and taking it from the pin retaining pocket of the guard when communicating therewith, said memberbeing movableto and from a position connnunicating with the pocketwhereby to serve as a keeper for the pin WllGIl'lIl said guard pocket.

5. 111 a safety catch for pins, a rotary keeper havinganaxlal pln-transfer groove, and a concentric casing formed with a pocket normally closed by the keeper and adapted to register With the groove on rotation of the keeper to receive the pin from the keeper groove for retention thereinby the keeper subsequent to a movement of the latter for disalining the groove and pocket.

6. A safety catch for pins comprising a guard having 'a pin-retaining pocket in its upper face andan upstanding endwall, a cylindrical keeper journaled horizontallyin the end Wall and overlying the/guard and its pocket, said keeper formed with a oove to receive a pin and registrabIew-ith t e underlying guard pocket for delivering and taking the pin to and from the pocket,- and means for holding thekeeper against rotation.

In testimony whereof I afiix my signature.

' RAYMOND: v." DAVIS.

Copies of this patent may be obtained for flve cents each by addressing'thc Commisflenenoi Patents,

1 Washington, D. 0.

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