US2401620A - Hairpin - Google Patents

Description

June 4, 1946. A DE JULIO 2,401,620

H AIRPIN Filed April 2, 1945 Patented June 4, 1946 UNITED STATES PATENT OFFICE 1 Claim. 1

This invention relates to hairpins, and more particularly to a hairpin designed and constructed so as to remain in position and to hold the hair where and as desired. Wire hairpins as heretofore constructed were made of a single strand of wire bent upon itself to provide tapering tines which are generally bent to form a waved section of wire between the ends of the tines. These hairpins have very little staying properties and do not effectively hold the hair in place or stay themselves in place in the hair. A form of hairpin commonly known as a bobble pin is resorted to when it is desired to hold a portion of the hair permanently in position or to hold something or some object of ornamentation to the hair.

It is an object of this invention to provide an inexpensive form of hairpin which is designed to give staying and holding qualities possessed, for example, by a bobble pin but which may be relatively inexpensively produced.

Another object of this invention is to provide a hairpin preferably of wire construction which is made up to include the structure of an ordinary single strand wire hairpin, and a secondary wire hairpin positioned between the tines of the single strand pin and joined thereto at a multiplicity of points and providing an ancillary hair gripping section which will effectively hold the pin in position in the hair and maintain the hair in position.

Other objects and advantages of this invention it is believed will be apparent from the following detailed description of a preferred embodiment thereof as illustrated in the accompanying drawing.

In the drawing:

Figure 1 is an elevation of a hairpin embodying my invention.

Figure 2 is a sectional end view taken substantially on the line 22 of Figure 1.

Figure 3 is a sectional view taken substantially on the line 33 of Figure 1.

In the preferred embodiment of my invention as illustrated in the accompanying drawing, the hairpin embodying my invention is illustrated as including two wire sections, an outer compression section I and an inner tension section 2. The outer compression section I is formed as an ordinary single strand hairpin bent upon itself to provide a curved apex 3 provided with substantially parallel tines 4. The tines 4 are crimped as indicated at 5 to provide gripping sections composed of a multiplicity of angularly related wire sections. The inner tension member is likewise formed of a single strand or length of wire curved at its apex 6 so that the diameter of its outer periphery corresponds substantially with the diameters of the inner surface of the apex 3 to provide a joiner section whereby the apexes 3 and 6 of the said sections are rigidly aflixed together in any suitable manner as by the simple process of welding at the seam 1 between the said curved apexes.

The inner tension section 2 is formed complementary to the outer section I with a pair of substantially parallel tines 8 and 9 which may lie parallel with and on the inside of the tines 4 of the outer section I.

The tines 8 and 9 of the inner section are crimped to provide a multiplicity of angled lengths H! which are substantially parallel with the angled sections of the crimped portions of the tines 4 which provide the gripping section 5. Thus there is provided a series of substantially closed hair-gripping pockets ll, l2 and I3 on the interior of the hairpin section, admission to which is provided through the throat l4 provided between the tines 4, 4 of the outer section I and the end sections l5 of the tines 8 and 9 of the inner tension member or section 2. The end sections H: are secured to the tines 4 of the outer section beyond the gripping section 5 in any suitable manner as, for example, by bending the said end sections to provide joining surfaces l6 which lie parallel to the inner surfaces of the tines 4 and by welding the two members together at their parallel surfaces.

The hairpin thu provided has the following mode of operation: When the tines 4 are spread apart in the direction of the double-headed arrow 11 as, for example, manually preparatory to inserting the pin in the hair or by the operation of a strand of hair passing through the throat l4 when the pin is inserted in the hair, the portion of the tines 4 which lies between the parallel surfaces l6 and the apexes 3 and 6 is placed in compression due to the bending action imposed upon the tines 4 with the point of joinder of the apex sections 3 and 6 acting as the center about which the bends are taking place.

As the tines 4, 4 of the outer compression section I are placed in compression, the tines 8 and 9 of the inner tension section 2 between the surface 16 and point of joinder of the apexes 3 and 6 are in tension due to the same bending force. Utilizing the foregoing principle and mode of operation, the hairpin embodying my invention has a greater gripping force and staying power within the hair, even though constructed of relatively fine gauge Wire, due to the forming of one ,of said members as a tension member and the outer members each formed of a single strand of material bent upon itself to form an apex 15 and a. pair of longitudinally extending tines, the

inner member being positioned between the tines of the outer member, and the apexes being secured together, the inner tines being shorter than the outer tines and having their outer ends secured to the outer tines intermediate the ends thereof, the inner tines each having a crimped tension section deformedinwardly out of lateral contact with the outer tines, the outer tines each having a crimped compression section opposed to the said tension sections, and the crimped tension sections defining between them a plurality of pockets for reception of the hair.

ARGEN TIN 0 DE J ULIO.

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