Hair drier
United States Patent 2048143

This invention relates to hair driers and more particularly to a novel multiple hair drier. Among the objects of the invention are: Provision of a plurality of hair drying units *5 mounted on a single stand. Generation of heat and velocity of drying medium (such as air) for all units within...

Seidman, Solomon H.
Fischer, Florian I.
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Seidman, Solomon H.
Fischer, Florian I.
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Other Classes:
34/82, 34/98
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This invention relates to hair driers and more particularly to a novel multiple hair drier.

Among the objects of the invention are: Provision of a plurality of hair drying units *5 mounted on a single stand.

Generation of heat and velocity of drying medium (such as air) for all units within the stand.

Provision for heating the drying medium before same is given velocity.

1,0 Provision for removing undesired particles from the drying medium before same reaches the drying units without introducing undue resistance of the current.

Provision for efficient low resistance distribu.15: tion of the drying medium to the points of emission from the drier units.

Provision for effective regulation of the outlets to effect desired concentration of drying medium at points necessary.

Central control for volume of intake to the number of drier units used at any time.

I Automatic regulation of heat required for the volume of intake to maintain approximately uniform temperature.

Automatic regulation of velocity of current for each unit used and volume of intake admitted to machine.

Other objects will appear from the disclosure of the invention.

The invention accordingly comprises the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth and the scope of the application of which will be indicated in the claims. For a fuller understanding of the nature and objects of the invention, reference should be had to:the following detailed description taken in connection with the accompanying drawings: Fig. 1; a side elevation of the device with parts removed for clarity of illustration; Fig. 2, an end elevation of the device; Fig. 3, a detail of the flue outlet; Fig. 4, a sectional elevation on line 3-3 in Fig. 1; Fig. 5, a sectional plan view on line 4--4 in Fig. 1; Fig. 6, a diagrammatic representation of an electric heater and controls.

Mounted on a base 10' is a stand I! which is preferably flared out at the upper extremity and adapted to receive the flues 12 on each side thereof. The flues 12 have outlets 13 over which sleeves 14 are rotatably mounted, and preferably flexible 55. outlet tubes 15 are affixed to the sleeves 14 and are adapted to support hoods 16. The hoods are preferably double walled with the inner wall 17 perforated and forming a rounded edge with the outer wall so cut off at an angle to the hood axis as to comfortably accommodate a human head. In the base 10 are secured a motor 18, a blower 19 driven thereby and an air heater 20 at the intake end of blower 19 which is preferably of the turbine type with its outlet 21 directed upwardly. The heater 20 is here shown of the gas type with a control valve 22 disposed near the intake end of blower 19. Air enters base 10 through opening 52 and leaves through 53. The gas flame and air in contact therewith is preferably confined in a chamber 23 open at the bottom but closed at its ends and top. The top plate 24 of chamber 23 is preferably deeply corrugated to provide maximum heating surface and an enclosure 25 approximately of the size of the intake opening to blower 19 is placed over the plate 24 to confine the heat above the plate 24 to the air sucked into blower 19. Thus only air unadultered by the products of combustion is admitted into the hair drier after being heated in passing through the heat chamber 25. Pivotally mounted on pin 26 and movable along the intake face of blower 19 is a shutter 27, adapted to vary the size of the intake opening 28.

The movement of shutter 27 is here effected by means of a rod 29 and moved up or down by means of a lever 30 controlled by a knob 31. Similarly linked to shutter 27 is a rod 32 which is adapted to open the gas supply valve 22 more and more as the shutter 27 exposes more and more of the intake opening and of course vice versa. These rods are preferably adjustable in length so as to permit variation in the relationship of air intake gas supply to the heater. This adjustment is effected by the threaded ends of rods 29 and 32 moving in tapped pivots 27' and 32' respectively. The velocity of the air driven into the flues 12 is also controllable by the same knob 31 through actuation of a rheostat lever 34, which may be applied to taps 35 of the resistance controlling the speed of the motor to vary same; incidentally the circuit to the motor may be entirely broken at the stop position 31' to shut off the machine.

Thus continuous rotation of knob 31 from its stop point 31', increases the intake opening, increases the amount of heat supplied and then starts the motor to blow the heated air to the flues 12.

An alternate structure utilizing electric heater units 36 each leading to taps 37 for varying the heat generated to that required, is shown in Fig. 6. This heater replaces the entire gas heater 20 with its chamber 23 and piping connection. The rod 32 is in this construction connected to the movable arm 38 in place of the control valve lever 22, arm 38 being adapted to move from tap to tap.

Within the stand I1, a flared outlet pipe 39 is mounted over the blower outlet 21 to gradually expand the air emitted and thus reduce the noise. A baffle 40 above pipe 39 splits the air current and deflects each portion with minimum resistance toward flues 12. The air current in each flue 12 is distributed to the hoods 16 through the respective outlets 13 located along the length of the flues. A baffle 41 is preferably suitably positioned at each outlet 13 in flues 12 to insure that the proper fraction of the air in the flue is deflected into each tube 15 with minimum resistance loss. The tubes 15 are preferably -flexible to permit easy positioning of the hoods IS.. Thus an effective distributing arrangement allowing the minimum in resistance loss is provided.

The hoods 16 as stated hereinabove have perforated inner shells II through -which the heated air is finally ejected for drying the .scalp. In the preferred construction, a plurality of shutters 42 are slidably mounted between the two walls of the hood and a knob 42' on the outside-of the hood provides the means for adjusting the shutters 42 to cover a portion of the perforations 3s in shell I17. Thus when those portions of the head -which have a light amount of hair had been dried, the current of air directed at those .portions may be shut off by means of the shutters 42, thereby correspondingly increasing the drying medium at the other portions of the head. Outlets 43 preferably extend through the hood 16 from wall to wall, to permit the dampened air to, escape after the drying medium had passed over the wet hair. This is preferred to forcing all the air out from between the shell T1 and the person's head.

Simple provision is made for rendering each drier unit operative or notat will. This is effected by mounting the tubes 15 on sleeves 14 over the flue 12 so that the tubes may be oscillated with the sleeves in planes normal to the longitudinal axis of the flues 12. Slots 44 in flues 12, preferably extending through an arc of 90 degrees are each adapted to receive a knobbed pin 45 passing through the sleeve 14, and thereby limit the movement of the sleeve 14 and hence tube 15 between the position of alignment of hole 13 and the end of tube 15 and the position of. their disalignment. In the former position the air is admitted to the hood 16 for drying the hair, in the latter the air cannot of course enter the tube 15.

At the same time, in the former position the hood 16 is in a position to receive the head, while in the off position the hood is out of the way, so so that a chair in front of it may be utilized for other purposes.

Preferably disposed at the point of division of the air current emerging from pipe 39 and: constituting the largest section .available, are air wy cleaners 46 for removing all solid particles from the air before same is applied to the hood as a drying medium. In present hair driers, the drying medium contains the dust, the tiny hair particles floating about in the air as a result of the 7i hair trimming, and other unsanitary elements, and this air is applied to a freshly shampooed head whose pores are still open because of the heat applied. To overcome this serious defect, the preferred construction of air filters 46 is a 7S foraminous body of glass wool having a film of oil thereon to catch and retain the solid particles.

Due to the particular smoothness of the glass and the larger section at which it is mounted, the air current passes through in being purified with minimum obstruction effect. The filters are preferably retained in loop holders 47 secured to the baffle 40, so that renewal of same is readily made after easy removal of the baffle from the stand l. . The heat dissipated by the baffle 40 is preferably utilized to intensify the sterilization of brushes, combs etc. 48 deposited on a mesh platform 49 in the sterilizer compartment 50 mounted over the baffle 40 and containing the absorbent substance -5 impregnated with a suitable sterilizing solution. The heated fumes thus generated by the vaporization of the solution effect a rapid thorough sterilization of the articles in the sterilizer.

The operation of the device is evident from the above .description. If one individual requires a hair drying treatment, one hood 16 is adjusted over the'head, -which automatically connects it with theilue 12 in view of -alignment'of -opening 13 with the end of.tube 1:5. The knob 3J1 s turned so that lever 434 contacts the first of taps 35.; 'This causes first the shutter: 27 to expose a sufficient portion f the intake to the blower 19, second, the gas supply valve 22 in burner 20 to automatically open the proper amount and the 3K gasibe ignited by a pilot light 33' to give a lanie offering :sufficient-heat for the air passing thru chamber 23 above it, and third, to start the motor -1I.to drive-the blower 19 and buildup'a :suitable vetcity. If another individual is ready for similar treatment, another hood 16 is adjusted and knob 3 i turned to the second of taps 35 andiso forth. One.plant at the Lbase 10, thus supplies the proper amount of clean drying medium ejected from hoods .6 for -a plurality of individuals with 4 proper velocity and temperature -of drying medium tor each. . It will thus be seen as the embodiments of the various features of this invention have been fully described, that they attain: the various objects io sought and are well suited to the requirements of practical use. Of course, many changes can be made in the above construction without violating the spirit of the invention, and many different embodiments .of this invention could be made without 'departing from the; scope thereof. It is therefore intended that .all matter contained in the description and drawings be interpreted as illustrative .and not in :a limiting sense except as defined in the appended claims. - -:- 0: Accordingly 'what is- claimed and desired to secure .by 'etters'Patent, is: 1. -In a device of the class described, 4n combination, an air blower provided -with an intake opening, a flueoconnected tosaid blower iat.said .0 intake opening, -a source of heat applied to-the outside of-,said flue -for heating the air -passing through said flue, a shutter at said intake opening, -means for moving aid shutter to vary the size of said intake opening of said blower and means actuated by said shutter'for automatically regulating the heat supplied by said source of heat. : 2. In a hair drier, in combination a housing, a blower therein provided with an intake opening, a horizontally disposed flue -within said housing and -having two openings, one opening directly communicating with a source of air outside one wall of said housing and the other opening connected to said intake opening of said blowefrand heating means for providing circulation of hot gases within said housing around the outside of said flue for transmission of heat to the air passing through said flue, the circulation of said hot gases through said housing being substantially independent of the air current passing through said flue and means for simultaneously regulating the size of the intake opening and the quantity of heat supplied by said heating means.

3. In a hair drier, in combination, an air blower provided with an intake opening, a flue at said intake opening and communicating with a source of air, a source of heat applied to the outside of said flue, longitudinal corrugations in said flue for facilitating heat transfer to the air passing through said flue, a valve for varying the size of said intake opening and means for simultaneously actuating said valve and regulating the quantity of heat supplied by said source of heat.