US818998A - Safety-pin. - Google Patents

Description

PATENTED APR. 24, 1906 W. W. BROWN.

SAFETY PIN.

APPLICATION FILED MAY 23. 1905.

UNITED sTATEs PATENT oEEioE.

WILLIAM BROWN, OF MEDIA, PENNSYLVANIA, ASSIGNOR TO ROBERT P. BROIVN MANUFACTURING COMPANY, OF NE\V YORK, N. Y., A CORPO RATION OF NE'W YORIL SAFETY-PIN.

Specification of Letters Patent.

Patented April 24, 1906.

To (LZZ whom it may concern:

Be it known that I, W'Irtnmr WV. BROWN, a citizen of the United States, residing at Media, in the county of Delaware and State of Pennsylvania, have invented certain new and useful Improvements in Safety Pins, of which the following is a specification.

My invention has relation to that type of safety-pin wherein the movable member is IO adapted to engage a shield or guard of the fixed member; and in such connection it relates more particularly to the arrangement of the movable member and the shield or guard to permit of a free sliding movement of the i 5 movable member in the shield or guard, but

to arrest and to limit the extent of such movement and to lock the member to the shield or guard when the same occupies an abnormal distorted position with respect to the shield or guard.

The principal object of my present invention is to provide a safety-pin having a shield or guard with a head having a smooth or even under bearing-surface and the movable member provided with a notch, which notch when the shield or guard and movable member are in engagement occupies a position within the shield or guard some distance from the under free edge of the shield or guard, whereby the movable member is afforded a free sliding movement so long as it does not occup y an angular or distorted position with re spect to the shield or guard, while when the movable member occupies a distorted angu- 3 5 lar position the notch thereof will engage the under smooth or even surface to securely lock, by means of the notch, the movable member to the shield or guard irrespective of the strain to which the movable member may be subjected in assuming its distorted angular form with respect to the shield or guard.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof,

in which Figure 1 is an enlarged side elevational view of a safety-pin embodying main features of my invention, the notched member of the pin being illustrated as released from the shield or guard of the pin and Fig. 2 is a similar view, partly sectioned, of the notched member illustrated as engaging the shield or guard and occupying with respect to the same, substantially in its normally operative position in the guard, a straight position and an abnormally angular distorted position whereof the notch is in engagement with the under free edge of the shield or guard.

Referring to the drawings, A represents a safety-pin comprising the fixed member (I, having at one end a coil (4, terminating in the movable member a". To the free end of the fixed member a is secured in the usual wellknown manner a shield or guard B, the head l) of which is provided with a smooth inner bearing-surface b and with downwardly-projecting wings If. The head I) so formed serves to receive and to retain the pointed end (1- of the movable member a", as shown in Fig. The movable member a? is provided with a notch or angular depression m, which in the normal position of the same is located within the head I) and a certain distance from the edge 5 thereof, as shown in dotted lines in Fig. 2. In this position and when the movable member a is slightly bent the same is afforded a free sliding movement on the smooth or even-beariug-surfacc l) of the head b, as there are no obstructions provided to hinder such a movement. Then, however, the movable member a is subjected to excess ive strain and is bent or distorted in the manner shown in full lines in Fig. 2, the notch (1, otherwise freely passing over the edge I) of the head I), is now arrested by the same. The edge I)" entering the notch a of the movable member prevents the same from becom ing disengaged from the head Z), and thus limits the movement of the movable member a in the head I). The greater the strain brought to bear against the movable member a the more securely will the same be locked to the head I), as a further bending of the movable member will only tend to hold the looking edge b with greater force in engagement with the notch (0*.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is-

A safety-pin having a shield or guard i11- closing the outer end of the fixed member of the pin formed as a continuation of the spring-acting member thereof, the latter being provided with a notch near its free end my signature in the presence of two subscriband said lspring-acting member when bent ing Witnesses. into an n ar osition en a in the outer under edg of th shield 0r guird in the notch of WILLIAM BROWN 55 the spring-acting member in such condition Witnesses: I

to become locked against disengagement. J. WALTER DoUGLAss,

In testimony whereof I have hereunto set THOMAS M. SMITH.

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