US640542A - Safety-pin. - Google Patents

Description

Patented Ban. 2, H900.

Nu. Mmm.

U. A. DIE LUNG.

SAFETY Pl N.

(Application filed Apr. 19, 1899.)

(No Model.)

m: News PETERS co, PHOYOLITMO. WASHINGTON, n v.

TATLES stream OSCAR A DE LONG, OF GLEN RIDGE, NEV JERSEY.

S A F ETY Pl N SPECIFICATION forming part of Letters Patent No. 640,542, dated January 2, 1900.

Application filed April 19, 1899. Serial No. 713,569. (No model.)

(Z 0 aZZ whom it may concern.-

Be it known that 1, Oscar. A. DE Lone, a citizen of the United States, residing at Glen Ridge, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Safety-Pins, of which the following is a specification.

This invention relates to that class of safety pins kn own as the shielded variety,wherein a guard or shield is provided for the pin-point when closed; and the object of my improvement is to enable safety-pins of this type to be more conveniently handled, both in opening and closing them, as well as to provide a locking means to prevent the pinfrom being accidentally opened.

In the drawings accompanying this application, Figure 1 is a plan view of myimproved safety-pin in the closed position. Fig. 2 isa cross-sectional view, enlarged, taken on the line 2 of Fig. 1. Fig. 3 is a similar view to that shown in Fig. 2, but embodying another form of my modification.

As is well known, many improvements have been introduced in safety-pins in recent years, and the guard or shield that is employed in various forms performs a very useful function by covering the pin-point when closed, and thereby preventing its catching in the flesh of the unwary user; but I do not find that any satisfactory method has been hitherto made known to prevent the pin from becoming unfastened, excepting, of course,its spring tension derived from the usual coil. To remedy this deficiency, I have invented, in conjunction with a shield, a doubled guidestrip whose contiguous leaves each have a registering corrugation united to form a bulb. Said bulb, being located midway between the two walls of the shield and the space between each wall and the bulb being insufficient to permit the passage of the pin therebetween without tensional enlargement thereof, it will be seen that a frictional and ten sional lock is thus produced.

A indicates the shank of a safety-pin, B the tongue united therewith by coil 0, and D in dicates a guard or shield for the pointed end of the tongue. The shield D consists of a doubled strip of metal, which at a incloses the end of shank A and is clamped thereover, the two ends of the metal at this point being con tinued to form a guide-strip E, both of said ends having an outward corrugation a a in a plane parallel with shank A, said two corrugations coinciding and together constituting a bulbous formation, as seen. The folded strip of metal forming the shield D is curved from the point where it connects upon the end of shank A, and it terminates in an open portion F, which lies in a plane approximately parallel with shank A. Said portion F forms the socket for tongue B, and its walls or ears ff extend at the sides of and inolose the bulb a a, leaving a space between the lat ter and each wall somewhat less than the bulk of the tongue 13 that passes therethrough.

As seen in Fig. 3, the wall f is corrugated coincidently with corrugation a and the wall f with corrugation a a curved passage-way be ing thereby formed at each side of the guidestrip E, said passage-ways being throughout their extent somewhat narrower than the bulk or cross-section of the tongue B, so that said tongue when passed into its socket must traverse either one of said passageways under and against friction and tension and be returned in like manner. By this means the accidental unlocking of the pin is rendered well-nigh impossible.

The two members of guide-strip E meet at their free ends and preferably continue from the corrugations a a in pear form to present at their tips a rounded inclinedsurface that will permit the tongue 13 to slip thereover easily when pressed inwardly for the purpose of release. Likewise the opposite sides of corrugations a a are properly curved and not too abruptly rounded, so that the tongue B when being passed into its socket, may not catch solidly against the side of the bulb, but will slip thereover readily to enter the frictional tensional passage-way.

The edges of the walls or cars f f where met by the tongue B in closing may be slightly flared outwardly, as indicated in Figs. 2 and 3, the better to permit said tongue to find its entrance.

Having now described my invention, I declare that what I claim is- 1. In a safety-pin having a shank and tongue, a shield comprising a socket and a guide-strip integral therewith, whose contiguous leaves each. have a registering cor guide-strip with intervals therebetween, said walls being coincidently corrugated with said guide-strip, to provide curved passages there- 15 between.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

OSCAR A. DE LONG.

Witnesses:

L. T. SULLIVAN, LAURON INGELS.

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