US1922061A - Hair curler - Google Patents

Description

Aug. 15, 1933. K, STRQHER 1,922,061

HAIR CURLER Filed Feb. 25, 1932 INVENTOR. KARL G. STPO /ER /.f) BY Ma/1Q 46%..

A TORNEY Patented Aug. 15, 1933 UNITED srArEs 1,922,061 v HAIR CURLER Earl Georg Striiher, Rothenkirchen in Vogtland, Germany Application February 25, 1932, Serial No. 594,988, and in Germany July 23, 1931 5 Claims.

This invention relates to improvements in the art of hair waving and refers more particularly to a curling rod upon which a strand of hairis wound during a hair-waving operation.

Curling rods are known consisting of an elongated cylinder used for winding a strand of hair thereon. It has been noticed that such cylinders are quite inconvenient in use as the hair is liable to slip on the smooth surface thereof and for this reason special clamping means had to be employed to clasp the hair tightly on the curler, such means, however, being quite cumbersome and increasing the cost of the device.

An object of this invention is to eliminate the above-mentioned drawbacks by providing a hair curler adapted to tightly hold a strand of hair wound thereon without the aid of special clamping means on the curler.

Another object is to improve the art of hair 'iwaving by unevenly distributing the heat supplied to a wound strand of hair, such distribution being due to the particular shape of the hair curler carrying said strand.

I have found that the above objects can be realized by providing a hair curler having at least one longitudinal edge, more or. less sharply defined, instead of the cylindrical curlers used heretofore or, preferably, the curler may have a polygonal cross-section so as to present a plurality of edges.

I have also found that the art of producing hair waves by winding a strand of hair and subjecting it to heat may be improved by providing a hair curler, the length of which is divided into a plurality of portions having diiferent cross-sections. Preferably, the cross-sectional area of each portion is uniform and the smallest portion is disposed in the middle of the curler, with portions of gradually increasing size extending toward both ends so that, in effect, a stepped formation of said portions is produced. Due to this arrangement, a strand of hair is held tightly on the curler and an uneven distribution of heat is obtained during the treatment.

The invention will appear more clearly from the following detailed description, when taken in connection with the accompanying drawing, which illustrates preferred embodiments of the inventive idea.

In the drawing- Figure 1 shows one form of curling rod in side elevation;

Figure 2 is an enlarged transverse section on the line 22 of Figure 1;

Figures 3 and 4 are side elevations of modified forms of the curling rod; and

Figure 5 is a similar view of another form of curling rod of the so-called vertical type.

, The curling rod shown in Figures 1 and 2 com- 69 prises an internal electric heatingelement 6 surrounded by a casing 7 having the shape of a regular hexagon in cross-section. The casing 7 carries two knurled rollers 8 situated at the opposite ends of the casing and used as finger pieces for holding the curling rod during the winding of a strand of hair thereon. The heating element 6 may be secured to the casing 7 by any suitable means, such as a binder 9 inserted between said element and the casing at the ends of the latter. 7O Both ends of the heating element 6 project beyond the casing 7 and are adapted to receive connector plugs 10 for supplying current to said element.

In the modification shown in Figure 3, the casing 11 is also hexagonal in cross-section and, in addition, is tapered gradually from both ends toward the middle thereof. By making the rod with edges, it is apparent that when a strand of hair is wound thereon, it will be better held against slipping circumferentially about the rod than when a cylindrical rod is employed.

The casing of the curling rod shown in Figure 4 is composed of a plurality of portions 12a, 12b, and 120, which may be square in cross-section, if desired, and which are firmly connected with each other, or made from one piece of material. Each of said portions is of uniform crosssection throughout its length, but diifers in crosssectional area from the next adjacentportion so that with the smallest portion 120 in the center a stepped formation is provided from one end of the rod to the other. The casing is provided with a plurality of apertures 13 for the purpose of increasing the heating capacity of the curling rod.

The modification shown in Figure 5 refers to a so-called vertical curling rod which is placed at right angles to the adjacent portion of the scalp during the hair-waving process. This curling rod comprises an internal heating element 6, a casing 14 having the shape of a regular polygon in cross-section, and a supporting member 15.

Due to the angular shape of the rod casing, 05

the hair wound thereon is heated while in a sharplyebent form at the longitudinal edge or edges of the casing, resulting in the production of hair waves which are more durable than those produced on cylindrical curlers.

What is claimed is:

1. A curling rod for use in waving hair, comprising an internal heating element, and a casing of polygonal cross-section surrounding said element, said casing being tapered from the ends toward the middle thereof.

2. A curling rod for use in waving hair, comprising an internal heating element, and 8. casing surrounding said element and including a plurality of portions, each of a different crosssectional area from a next adjacent portion and 7 being rigidly connected one to the other in stepped formation.

3. A curling rod for use in waving hair, comprising an internal heating element, and 2. casing surrounding said element and including a plurality of rigidly interconnected portions, each of uniform polygonal cross-section throughout its length and of a difierent cross-sectional area from a next adjacent portion.

4. A curling rod for use in waving hair, comprising an internal heating element, and a casing KARL GEORG s'rRoHER.

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