US1889746A - Method of and means for permanently waving hair - Google Patents

Description

Dec. 6, .1932. R. L. EVANS 1,839,746

7 METHOD 0F AND MEANS FOR PERMANENTLY WAVING HAIR Original Filed Jan. 21, 1932 i v i Hill Patented Dec. 6, 1932- .UNIT D STATES PATENT; orrlca RALPH I. EVANS, OI NEW YORK, N. Y, ABSIGNOR '10 ZOTOS OOBPORATION, OF NEW YORK, N. Y, A. CORPORATION OF NEW YOBK METHOD AHD mNS B PERMANENTLY WL'VIHG HAIR Original application filed 3mm 81, 1888, Serial No. 587,890. Divided. and 1988. Serial No. 815,081.

This invention relates to that class of hair waving in which a so called permanent wave is imparted toa pro-formed tress of ban by subjectin the tress to the action of a heating chemical, such as calcium oxide, which, when moistened, will of itself generate sufiicient heat to impart a permanent wave to the said tress.

This invention comprises a novel method of and a novel means for controlling the rate of cooling after the development of heat generated by the self heating chemical has ceased. a

I have found that the rate of cooling after the development of heat has ceased can be successfully controlled by enclosing the heating chemical in a covering of heat msulatlng material such as asbestos or wool so that the heat will be retained for thedesired length of time.

An example of a hair waving pad embodying my invention is represente 1n the accompanying drawing in which:

Fig. 1 represents an inside plan view of the pad in its unwra ped condition, the inner absorbent sheet belng shown at the side of the pad and the inner wrapper sheet being shown unfolded;

Fig. 2 represents an inside lan view of the pad in its unwrapped condition after the innor wrapper flap as been perforated and the mner face of the chemical containing envelope has been perforated, the inner absorbent sheet being shown interposed be "tween the inner face of the heating chemical containing envelope and the inner wrapper fin s 3 represents a side view of the pad wrapped around a wound tress as in use; and F 4 represents a longitudinal central section ugh the wrapped pad.

The outer wrap r of the self wavm pad is denoted by 1 and i: preferably made 0 nonabsorbent material, as for instance paper. The inner wra pen is denoted b 2 and is preferably ma e of metal foil. his inner wrapper 1s provided with a foldable flap 3. .An envelope 4 composed of a perforable impervious material, such as metal foil, is attached to the inner face of the inner wrapper 2, which envelope contains a heating chemical, such as calcium oxide in powdered form, which chemical, when moistened, will of itself generate suflicient heat to impart a so called permanent wave to a pre-formed tress when enclosed within the ad.

An inner remova le sheet 5 of absorbent material, such as cotton fabric is arranged to be moistened and inserted between the flap 3 and the envelope 4 after the inner face of the envelope 4 and the folded over flap 3 of the inner wrapper have been perforated. The pressing of the flap back into place will squeeze the moisture from the wetted inner sheet into the envelope containing the heating chemical. v

In practice, the tress 6 is wound as usual around a mandrel 7 The tress may be moistened either before or after it is wound, by a suitable waving solution, such for instance as an ammoma solution. The inner face of the impervious envelope 4 containing the hair waving chemical is perforated as shown at 8, and the folded over flap f the inner wrapper may be perforated at the same time as shown at 9. The inner sheet 5 is moistened by water or by a suitable hair waving solution, such as that used for moistening the tress 6.

The pad is then wrapped around the reformed tress and is preferably secured in position at the scalp end of the tress by a suitable scalp protecting guard of well known or approved form, such for instance as the self locking guard 10 shown in the accompanying drawing. The outer end of the pad may be secured around the mandrel 7, as for instance by twisting the outer wrapper of the pad around the same. The exothermic action starts at once because of the application of moisture by the wetted inner sheet 5 of the pad to the self heating chemical through the perforations in the inner face of the impervious envelope. Heat is then set up within the pad in order to impart a so called a permanent wave to the pre-formed tress withp out requiring application of heat from an outside source. It will be seen that the outside wrapper of the pad serves to confine the heat to a large extent within the pad, the steam application fled June 8,

- there? generated by the combination of the treatm solution with the chemical being permitte to escape through the crimped outer end of the outer wrapper. However, to control the rate of cooling after the development of heat has ceased I rovide a covering of heat insulating materi as asbestos or wool, which covering is herein shown as a thick tube 11 which may he slipped over the pad as shown 3 and 4 to completely envelop it and cause the heat to be retained for the desire period of time.

This application is a division of my co endin application filed January 21, 1932 rial 0. 587,890, entitled Method of an means for permanently waving hair.

What I claim is: 1. The method of waving hair comprising as my subjecting the hair to the action of a chemical which, when moistened, will generate suffieient heat to impart a permanent wave to the hair, and retaining the heat over a period of time after the developmentof heat has ceased.

2. The method of waving hair comprising subjecting the hair to the action of a chemical which, when moistened, will generate sufficient heat to impart a permanent wave to the hair, and controlling the rate of cooling after the development of'heat has ceased by enclosing the hair a heat insulating covering.

3. The method ofwaving hair comprisin subjecting the hair to the action of a chem1- cal "which, when moistened, will generate suf- -ficient heat to impart a permanent wave to the hair, and controlling the rate of cooling after the development of heat has ceased by enclosing the hair within a covering of as- 4 4. The method of waving hair comprising subjectin the hair to the action of a chemic which, w en moistened, will generate suflicient heat to im art a rmanent wave to the hair, and contro g t e rate of cooling after the development of heat has ceased by enclosing the hair within a covering of wool.

5. Means for waving hair including a chemical which, when moistened, will generate sufiicient heat to impart a permanent wave to the hair and means for retaining the heat over a period of time after the develop ment of heat has ceased.

6; Means for waving hair including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair and a heat insulating covering for controlling the rate of cooling after the development of heat has ceased.

Means for waving hair including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair and a heat insulating covering of asbestos for controlling the rate

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