US2073767A - Hair waving scalp protector - Google Patents

Description

March 16, 1937. H. F. THOMPSON HAIR WAVING SCALP PROTECTOR Filed May 28, 1955 FIG.

FIG. 2.-

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' INVENTOR ATTQRNEY Patented Mar. 16, 1937 UNITED s'rArss PATENT QFFICE 3 Claims.

This invention relates to improvements in hair waving scalp protectors, and more particularly for use in spiral waving.

Among the objects of the invention are to protect the scalp of the wearer from the discomforts of hair pulling and the dangers of scorching, scalding, electric shock and other incidental risks.

Another object is to reduce the weight and increase the strength of the protector.

Another object is to eliminate unsanitary materials from the protector..

A further object is to produce a protector that conforms to conventional technique in this art.

Other objects and advantages will appear as the description progresses.

Heretofore metal has entered very largely into the construction of protectors in this class. In the present invention metal has been dispensed with wherever possible without sacrifice of strength, because metal conducts heat from the heating unit to the scalp. There is also the danger of electric shock when metal intervenes between the scalp and an electric heating unit.

The electric hazard and the accumulated heat become a serious inconvenience when the scalp is entirely covered with the multiplicity of protectors'necessary to accomplish hair waving in accordance with this art; which should be taken into consideration in analyzing the structural departures in the present invention.

In this specification and the accompanying drawing the invention is disclosed in its pref-erred form. It is to be understood however that it is not limited to this form because it may be embodied in other forms without departing from the spirit of the invention as defined in the claims following the description.

In the one sheet of drawings:

Fig. 1 is an enlarged plan view from above of a hair clamp and protector constructed in accordance with this invention.

Fig. 2 is a side view of the same from the hinge side.

Fig. 3 is a similar view from the latch side. Fig. 4 is a view similar to Fig. 1, with some of the laminations broken away to show the hinge and latch structures.

Fig. 5 is a cross section taken on the line V--V,

Fig. 1. v

Fig. 6 is a side elevation of the clamp in operative position in combination with the hair wav-v protector adaptableto croquignole waving rods, the rod being omitted.

In detail the construction illustrated in the drawings, referring first to'Fig. 2, comprises a laminated formation made up of the top and bottom plates I, I and 2, 2, respectively, with the intermediate plates 3, 3 and the spacer plates t, i and 5, 5. These plates are preferably die cut from compressed fibrous sheets known in the trade as bakelite, which is hard, tough and 10 impervious with a high gloss finish.

These various plates are built up to form opposed jaws hinged together on the pintle pin 6. The plates I and 2 are cut away at I and 8 to form a close .arcuate fit with the circumference 15 of the extensions El and II on the plates I and 2, which overlap the lug II on the'opposed jaw of the clamp and pivot on the pin 6 to form a hinge.

On the opposite side of the clamp, the plates 4 and 5 are cut away at I2, on opposite. sides of 20 the center plate 3 to expose the'lug I3 on the plate 3, see Fig. 3. The metal straps I i, I4 lie within the cuts I2 in the plates 4 and 5 on opposite sides of the lug I3 and are pivotal on the pin I5. Similar cuts are made in the plates 25 6 and 5 in the opposed jaw, exposing the latch lug It, on the opposite sides of which the straps I4, Ii lie. The latch lever II is pivotal between these straps on the pin I8 and has the cam shaped head I9 engaging behind the latch lug IE, to forcibly draw the opposed jaws of the clamp together when the latch II is forced into the gap I'I' between the plates I and 2. The whole latch mechanism is thus gained into the clamp flush with the periphery, except for the protrud- 35 ing finger grip. 20, for dislodging the latch.

So that the axis of the waving rod 2I may project from the dead center of the clamp, the parting line 22 of the jaws is set lateral to the diameter of the clamp. The opposed edges of the jaws 4 on this parting line are provided with the resilient lips 23 and 24 respectively, see Fig. 5. The plates 3, 4, 5 are cut back adjacent this parting line to admit the ribs 25 and 26 of these lips which have lateral flanges extending flush with the outer 45 planes of the outer plates I, I, and 2, 2, respectively. It is the function of these lips to grip the lock of hair :r, adjacent the scalp, and when compressed by the latch mechanism I5-20 they will prevent vapor leakage through the clamp and minimize capillary attraction along the hair :1: to the scalp at x.

The arcuate notch 21 in the perimeter of the clamp receives the circumference of the adjacent clamp and permits a closer arrangement of the clamps upon the head of the wearer.

The laminated structure is held together by rivets placed at proper intervals as at 28, 29, 30 and 3| in addition to the pins 6 and [5. The heads of these pins and rivets are countersunk in the plates 2 and 2, and extend through the laminations and are riveted over the plates 1 and l'. The laminae may be cemented together and the transverse rivets dispensed with if desired.

The clip 32 held by the rivet 30 is provided to hold the ends of a string used in the manual technique of tying the hair at to the rod 2|, if required. In the present instance the rod 2| is provided with the hook shaped foot 2| which holds the hair and dispenses with the string.

The laminated structure permits the use of material reinforced with woven fabric which is not possible were the jaws of the clamp molded in homogeneous units having the parts l3, and I 6 of the latch and the thin members of the hinge cored therein. The laminations separated by air films are less thermoconductive than an equal thickness of the same material in one piece.

It has been the practice heretofore to interpose a layer of felt or similar material between the protector and scalp. In the compact rigid construction and joining of parts incidental to the laminated construction, the minimum amount of metal involved, the dielectric and low thermal conductivity of the material and the general efiiciency of the present invention renders absorbent pads unnecessary. The layer of sheet cork 33 cemented to the underside of the protector jaws and cut to the same outline as the plates 2 and 2 is nonabsorbent, dielectric and heat nonconducting and provides a comfortable sanitary pad next to the scalp. The whole protector is adapted to be thoroughly sterilized between operations.

This cork layer also insulates the scalp from the countersunk rivet heads.

In the present instance a protector for use in connection with spiral Waving is disclosed. The same laminated structure and general characteristics are equally applicable to clamp protectors for use in the croquignole technique, with appropriate modifications well within the spirit of the invention. This modification is shown in Fig. 7 with the comparative parts indicated by the same numerals as the spiral clamp with the addition of 0:.

Having thus described this invention, what is claimed and desired to secure by Letters Patent 1s:

1. A protector in the class described including a pair of laminated jaws of insulating material, certain of the laminae in each jaw being cut away to form hinge lugs, intermediate latch lugs, and recesses, respectively; a hinge pin engaging said hinge lugs; a latch embedded within the edge of the protector and engaging said intermediate latch lugs; and resilient lips embedded in said recesses and forming part of the meeting edges of said jaws.

2. A protector in the class described including a pair of hinged jaws having top, bottom and intermediate plates of insulating material; insulating spacer laminae interposed between said plates; and a compression latch engaging said jaws.

3. A protector in the class described including a pair of jaws having top, bottom and intermediate plates of insulating material; insulating spacer laminae interposed between said plates, certain of said plates and laminae being cut away to form interlocking lugs engaging a hinge pin, and independent latch lugs on the respective jaws; and a pivotal latch engaging said latch lugs.

HARRY F. THOMPSON.

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