US1892391A - Method of and means for permanently waving hair - Google Patents

Description

R. L. EVANS Dec. 27,1932.

METHOD OF AND MEANS FOR PERMANENTLY WAVING HAIR Original Filed Jan. 21. 1932 ATTORNEYS Patented Dec. 27, 1932 UNITED STATES PATENT OFFICE RALPH L EVANS, OF new YORK, N. Y ASSIGNOB TO ZO'I'OS CORPORATION, OF NEW YORK, N. Y, A. CORPORATION OF NEW YORK mnon OF AND MEANS FOR PERMANENTLY WAVIN'G HAIR Original application fled September 22, 1982, Serial No. 634,290, which in turn is'a division of application fled January 81, 1982, Serial No. 587,890. Divided and this application fled November 12, 1932. Serial This invention relates to that class of hair waving in which a so-called permanent wave is imparted to a pre-formed tress of hair by subjecting the tress to the action of a heating chemical, such as calcium oxide, which, when moistened, will of itself generate sulficient heat to impart a permanent wave to the said tress.

This invention comprises a novel method of and a novel means for controlling the development of the heat generated by the self heating chemical wherein certain materials are used to extend the development of the heat over a longer period of time than could be done by the heating chemical itself.

I have found that the development of the heat may be extended successfully over a considerable period of time by combining with the moistening solution a substance, as for instance an ammonia compound which would emit a volatile gas, thereby removing the heat and keeping the temperature down. 4

I have also found that the development of the heat may be extended successfully over a considerable period of time by combining with the moistening solution a diluent, such as an alcohol.

It is to be understood that the heating chemical may be used in its dry powdered state or that it may be pressed into easily friable cakes, in which case a suitable binder, such as dry glycerin, etc.,- may be used.

An example of a hair waving pad embody ing my invention is represented in the accompanying drawing, in which:

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

Fig. 2 represents an inside plan view of the pad in its unwrapped condition after the inner wrapper flap has been perforated and the inner face of the chem cal containing envelope has been perforated, the inner absorbent sheet being shown interposed between the inner face of the heating chemical containing envelope and the inner wrapper flap;

Fig. 3 represents a side view of the pad wrapped around a wound tress as inuse; and

Fig. 4 represents a longitudinal central section through the wrapped pad.

The outer wrapper of the hair waving pad is denoted by 1 and is preferably made of non-absorbent material, as for instance paper. The inner wrapper is denoted by 2 and 1s, preferably made of metal foil. This inner wrapper is 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 heatin chemical, such as calcium oxide in powdere 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 pad.

An inner removable sheet 5 of absorbent material, such as cotton fabric is arran ed to be moistened and inserted between the up 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.

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 ammonia 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 3 of 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. I

The water or solution may be treated to produce the results hereinbefore set forth.

The pad is then wrapped around the preformed tress and is preferably secured in position at the scalp end of the tress by a suitable scalp protecting ard of well known or approved form, such or 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 a plication of moisture by the wetted inner eet of the 5 pad to the self heating chemical through the perforations in the inner face of the impervious enveloge. A regulable heat is then set up within t e pad in order to impart a so called ermanent wave to the pre-formed tress without 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 largeextent within the pad, the steam generated bythe combination of the treating solution with the chemical being permitted to escape through the crimped outer end of the outer wrapper.

This 'application'is a'division of my copending application filed September 22, 1932, Serial No. 634,290, which is in turn a division of my copending application filed January I 21. 1932, Serial No. 587,890.

What I claim is:

1. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium, the development of the heat being extended over a considerable period of time by combining a suitable medium with the moistening medium.

2. Imparting a permanent wave to hair by subjecting the air toheat generated by the reaction of an exothermic material with a moistening medium,-the development of the heat being extended over a considerable period of time by combining a diluent with the moistening medium.

3. Imparting a permanent wa e to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium,- the development of the heat being extended over a considerable pe-' riod of time by combining an alcohol with the moistening medium.

4. Impartinga permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermicmaterial with a moisteningmedium, thedevelopment of the heat being extended over a considerable period of time by combining a salt with the moistening medium.

5. Imparting a permanent wave to hair by subjecting thehair to heat generated by the reaction of an exothermic material with a moistening medium, thedevelopment of the heat being extended over aconsiderable period of time by combining ammonium sulphate with the moistening medium.

6. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium, the development of the heat being extended over a considerable pee5 riod of time by combining ammonium sulphate, which will emit a volatile gas, with the moistening medium.

7. Means for waving hair including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the ha1r, a material being combined with the moistenin medium for extending the develo ment 0 the heat over a considerable period 0 time.

8. Means for waving hair including a chemical which, when moistened, will generate suffic ent heat to impart a ermanent wave to the halr a salt being combined with the moistenmg medium for extendin the development of the heat over a considera 1e period of time.

9. Means for waving hair including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair, ammonium sulphate being combined with the moistening medium for extendmg the development of the heat over a considerable period of time.

v In testimony, that I claim the foregoing as my invention I have signed my name this 28thday of oaober, 1932.

RALPH L. EVANS.

Images