US2254013A

US2254013A - Hairpin

Info

Publication number: US2254013A
Application number: US293481A
Authority: US
Inventors: Larson Raymond
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-09-05
Filing date: 1939-09-05
Publication date: 1941-08-26
Anticipated expiration: 1958-08-26

Description

Aug. 26, 1941. LARSON 2,254,013

HAIRPIN.

" Filed s t. 5, 1959 Patented AugQZG, 1941 I UNITED STATES PATENT OFFICE Larson,

Application September 5, issa's' ru No. seam '1 Claims. (Cl. 132-59) This invention relates to new and improvements in hairpins.

Among the objects of my invention is to provide an improved hairpin having a novel. surface whereby the retainment of such hairpin in prove the construction of the hairpin by pro-' viding the intermediate looped portion with a -fiat tened or thinned central section to cause such flattened section to extend outwardly of the adjacent side portions of the loop to facilitate the manual withdrawal of the hairpin from I '20 5 cross-section taken on the hair, l

I I am aware of the existence of hairpins which are coated with baked colored compositions to provide light diffusion and which compositions are of such type that'in drying a somewhat roughened surface is provided which is intended to resist the displacement of such hairpin, but

' I have found that none of these coatings actually compared to the size of a single hair, and therefore did not provide the necessary texture for the desired, resistance to displacement.

Others have attempted toproduce the desired 35 t n h rpin stock pr y of m l; hOW- displacement-resisting surface of such hairpins by mechanically roughening or rolling the metal stock to provide closely arranged angular faces,

7 grooves or corrugations but such mechanical treating did not provide the desired resistance because such grooves or corrugations were still comparatively too large and smooth in texture and not sufliciently irregular. Y

The structural texture of the surface of my improved hairpin provides the desired resistance to displacement of such hairpin'because such surface consists of exceedingly fine, preferably microscopic and very irregular, metallic particles or bronzes supported on the stock of the hairpin in pigmented lacquers, enamels or suitable colored liquid vehicles preferably of the quick drying type, the minute size, irregularity and color of such closely disposed metallic particles producing a surface texture of the desired frictional resistance and at the same time aflording the desired luster, and color to harmo withthesheenofthehair. It is therefore, an object of my invention to provide a hairpin of vimproved construction,

' color and surface texture whereby its practicability is substantially enhanced by facilitating its manual withdrawal, by increasing its resistance' to unduired displacement, and by reducing its degree of visibility through its color 10 harmony with the color of the hair.

- A preferred embodiment of my invention is illustrated in the attached drawing, wherein Fig.1 is a plan view of the hairpin; -I"ig.2isasideviewcfsame;

Fig. 3 is aplan' viewof the hairpin before the pin has been and b'e'nt'into the desired shape as shown in'l 'igs. '1 and 2; view of the, pin in the form' is aside line H of m. 4 showing thefiattened'mediai as accordance with my invention;

Figs. 7 and 8 are enlarged diagrammatic mydmprovedcoating, and

I Fig,9 is an enlarged elevational view of a portion of a hairpin metal stock twisted along its longitudinal axis to produce the improved surface finish.

As shown in the illustrations, It indicates a ever, it will be readily apparent that my invention is adapted for embodiment in hairpin stocks of other materials and cross-sections, and in hairpins or bob pins of other shapes and de-' i ns.

The strip of fiat material I0 is mechanically flattened intermediateits ends, as at l I, to provide a comparatively wider, arcuate and thinned portion in the medial part of the loop as shown in Figs. 1 and 2. The purpose of such flattened The mechanical flattening operation to produce the flattened medial portion ll 'may be accompanied by the crimping or bending operation of the spaced extensions ll to produce the curved or wavy portions i2 in the legs or extensions ll.

of the hair.

In the embodiment of my invention shown in the illustrations, the entire surface of the stock of the hairpin is covered or coated with a preferably comparatively quick-drying composition ll composed of very fine irregular metal particles, or finely ground crystalline quartz or silica particles, suspended or carried in a quick-drying liquid vehicle such as any suitable natural or colored lacquer. These metallic, quartz or silica particles 'must be reduced to a very fine and irregular size and preferably smaller in size than the cross-section of a human hair as comparatively diagrammatically illustrated in Figs. 7 and ,8. Very fine irregular metallic particles with I and colors harmonizing or blending with various colors of hair; as for example, pale gold for blond hair, silver for gray hair, gun metal for iron gray hair, various bronzes for various brown hairs, copper bronzes for red hair and black metallic powder lacquers for black.

These metallic powder lacquers afford desirable colors and produce a surface texture of the desired frictional resistance andwhile the frictional quality afforded is sufiiciently high to secure the desired resistance, the very sharp edges of the metal particles are sufllciently modified by the lacquer to prevent cutting or tearing In the embodiment of my invention illustrated in Fig. 9 the desired surface texture of the hairpin stock is attained by imparting to the metal stock I! a twist along its longitudinal axis. The

stock of round or other cross-sectionis bodily twisted along its longitudinal axis to thereby distort the surface and produce a satin finish of ridge-like lines IQ of spiral form longitudinally of the stock. The illustration in Fig. 9 shows one form of this modification greatly enlarged.

I claim:

l. A hairpin including the surface of the body thereof substantially completely coated with a composition consisting of finely divided particles of inorganic matter of irregular shapes carried in a hardened fluid vehicle.

2. A hairpin having the surface of the body substantially completely coated with a composition' consisting' of minute particles of metal carried in and coated with a hardened lacquer.

3. A hairpin having the surface of the body substantially completely coated with a composition consisting of minute particles of quartz carried in and coated with a hardened lacquer;

4. A hairpin having the surface of the body thereof substantially completely coated with a composition consisting of finely divided particles of inorganic matter of irregular shapes carried in a hardened pigmented fluid vehicle.

5. A hairpin having the surface of the body,

substantially completely coated with a composition consisting of minute particles of metal carried in and coated with a hardened pigmented lacquer.

6. A hairpin having the surface oi the body substantially completely coated with a composition consisting of finely divided particles of inorganic matter of irregular shapes carried in a hardened pigmented fluid vehicle.

7. A hairpin having the surface of the body