US 1917305 A
Description (OCR text may contain errors)
y 1933- A. e. JOHNSON 1,917,305
OIL HEATER FOR PERMANENT HAIR WAVING EQUIPMENT Filed March 21, 1952 INVENTOR.
BY H- EJUHNBIJN m ATTORNEY.
Patented July 11, 1933 aver-ion e. JOHNSON, or ermuan, IOWA OIL F033, PERMANENT HAIR WAVING EQUIPMENT This invention relates to an oil heater primarily designed to be used in connection with the permanent waving equipment similar to that illustrated in my Patent No. 1,846,338 under date of February 23 1932 on a Device for permanently waving hair.
Therefore the principal object of my invention is to provide a portable electric heater for successfully and quickly heating oil satiil urated permanent waving pads.
1 further object of this invention is to provide a heater for heating oil saturated pads that maintains the pads at a predetermined uniform temperature.
A still further ob'ect of my invention is to provide a heater for permanent hair waving equipment that is sanitary and clean in use. i
A still further object of this invention is to provide an oil heater for permanent hair waving equipment that economical in manufacture and durable in use.
These and other objects will be apparent to those skilled in the art. My invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawing, in which:
Fig. 1 is a front view of my complete invention ready for use. j i
Fig. 2 is a top plan view of the device with the lid removed.
Fig. 3 is a cross sectional view of the heater taken on line 33 of Fig. 2 and more fully illustrates its interior construction.
3 Fig. 4 is an enlarged side view of a portion of the invention holding an oil saturated pad and pad holding clamp.
WVhen oil heat is used instead of electric heat to permanently wave hair, it is highly desirable that the oil saturated pads not only be of uniform and correct temperature when placed on the hair to be waved, but that sufficient hot pads be available to the operator at all times to complete the of the entire head of hair. I have accomplished this application filed-March 21, 1932. Serial No. 600,134.
by my heater as will ciated.
In the drawing I have used the numeral to generally designate the housing of the in vention having the hinged lid 11. This housing maybe of any shape, size or design. To facilitate its manual movement fromplace to place I haveprovided a handle member 12 on each side as shown in Fig. 1. In the bottom portion of the housing 10 is a drawer which I have designated by the numeral 13. The manual opening and closing of this drawer is facilitated by the knob 14:.
The numeral 15 designates a base member secured inside the housing 10 by any suitable means and positioned just above the drawer 13 as shown in Fig. 3. This base member 15 is of slab. construction and may be of any suitable insulating material such as composition, clay or like. Its dimensions are such that it completely incloses the bottom portion of the housing, providing thereby a compartment for the drawer 13. The numeral 16 designates coiled. resistance wire resting in a depression in the top surface of thebase 15. The numeral 17' designates a detachable tray member resting on the top of the base 15 and. over the resistance wire 16, as shown in Fig. 3. he numerals 18 and 19 designate two electric lead wires designed to hem communicationwith the positive and negative sides of a source of electrical energy; These two lead wires are connected in the usual manner to the two ends of the resistance wire 16. Interimposed in the lead wire 19 is an ordinary thermostat 20 shown in conventional form in Fig. This thermostat 20is positioned adjacent the side of the tray member 17 and is designed to automatically break the electrical circuit when the contents in the tray 1? reaches a predetermined temperature. The numeral 21 designates a liquid inside the tray 17. Although the fluid 21 may be any suitable liquid I recommend oil, due to the fact-that oil does not readily evaporate at high temperatures. Also interimposed in one of the lead wires 18 and 19 is an ordinary manually operated switch 22 positioned for convenience on the front of the housing 10 as shown in Fig. 1. 9
be hereinafter appre- The numeral 23 designates generally the pad supporting and holding element. This element loosely rests on the upper marginal edge of the tray 17 and has its bottom extending downwardly some distance into the tray as shown in Fig. 3.
The numeral 24- designates a plurality of parallel troughs formed in the top of element 23. These parallel troughs are quite close together and each have in cross section a curved bottom approximately that of a half circle. The bottom of the element 23 conforms to the general outline of'these troughs 24 to provide a greater heating surface on the bottom of the element 23 and to eliminate undesirable thickness of the element 23, which would otherwise interfere with the rapid transfer of heat. The numeral 25 designates a thermometer positioned in the central peri tion of the element .23 as shown in Fig. 2.
This thermometer 25 furnishes immediate temperature information to the operator. The numeral 26 designates insulating material such as asbestos inter-imposed between the housing 10 and the parts 15, 1'7 and 23, as shown in Fig. 3. This sheet insulation 26 prevents the housing 10 from becoming unduly hot. Similar sheet insulation may also be placed asshown in 3 between the base 15 and the tray 17.
I have designated the v.oil saturated pads.
to be heated by the numeral 27. Each of these pads are embraced and secured to two hinged shell members 28 and 29 as shown in Fig. 4.. These two shell members, when in a closed position, are of circular construction and as explained in my patent herebefore referred to with the pads 27 are capable of embracing a winding of hair to be permanently waved. The spring 30 normally holds the two shell members 28 and 29 in a closed position. The numerals 31 and 32 designate two handle members secured to the shells 28 and 29 respectively. These hand-le members 31 and 32 are used to manually carry the shell members to which they are secured. They are also used to open the two shell members which is accomplished by forcing the two handle members toward each other against the spring 30.
To use my device it is merely necessary, to place one or more pairs of shell members 28 and 29, holding the pads 27 into the grooves 24 as shown in Fig.2 and close the switch 22.
33 With the switch 22 closed theresistance wire 16 will become hot which will in turn highly heat the oil 21 in the tray 17. vVith the oil 21 engaging the bottom corrugations of the element 23, the heat will be evenly tran ferred from the oil 21 to the pads 27 in the grooves 24. With the thermometer 25 show ing sufiicient temperature the pads may be used as desired in the process of permanently waving hair. The grooves 24 which conform to the general outline of the shell members 28 and 29, when in a closed position, not only aid in holding the handles 81 and 32 in a desirableupright position, but embrace the shell members sufficiently to successfully transfer heat evenly to the pads 27 The element 23 and tray 17 holding the liquids may be lifted directly out of the housing 10 for cleaning purposes or for the replenishing of new liquid in the tray 17. The drawer 13 may be used to hold and sterilize certain equipment used in the permanent waving of-hair.
From the foregoing it will readily be seen that I have provided a very desirable heater for use in connection with permanent waving equipment using the hot oil method.
Some changes may be made in the construction and arrangement-of my improved oil heater for permanent hair waving equipment, without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modilied forms of structure or use of mechanical equivalents which may be-reasonably included within their scope.
I claim: 1. In a device of the class described, a housing, handle members on said housing, a drawer in said housing, an electric heating unit inside said housing designed to be in communication with a source of electrical energy, a tray in said housing designed to hold liquid, a supporting member above said tray, a plurality of depressions in the top of said supporting member adapted to receive pads used in the permanent waving of hair, the bottom of said supporting member conforming to the general outline of said depressions and capable of contacting the liquid in said tray, and a thermostat adjacent said tray for-disconnecting saidelectric heating unit with said source of electrical energy when'said tray reaches a predetermined tem perature. I V I 2. In a device of the class described, a housing, an electric heating unit inside said housing designed to be in communication with a source of electrical energy, a drawer in said housingand below said heating unit, a tray in said housing designed to hold liquid and positioned above said heating unit, a supporting member above said tray, and a plurality of receivinggrooves in the topof said supportingmember adapted to receive pads used in the permanent waving of hair.
AN THON G. JOHNSON lib