US1883972A - Hair drier - Google Patents

Description

Oct. Z5, 1932. p. KUMAN ET AL 1,883,972

HAIR DRIER Filed Jim.. 29, 1931 2 Sheets-Sheet 2 Patented Oct. 25, 1932 UNITED STATES PATENT OFFICE PAUL KUNIAN AND JUIIUS GOLDBERG, OF MINNEAPOLIS, MINNESOTA; SAID GOLDBERG ASSIGNOR TO SAID KUNIAN HAIR DRIER Application led January 29, 1931.

This invention relates to hair driers of the portable self-contained type commonly used in beauty parlors for drying human hair after c a shampoo, finger wave or other hair treatment. c.

In most commercial hair driers utilized at this time Aair is projected upon the scalp by means of a rotary fan disposed axially of a Y casing and the air in its passage through said casing is heated. In such structures a rapid swirling movement is usually imparted to the projected air resultingr in unequal distribution of the air projected against the scalp and dead a-ir spaces beneaththe hood or deflecting i member. The volume of air projected in many of such devices is inadequate to quickly dry the hair.`

It is an object of our invention to provide a simple, improved and highly efficient hair drier which will, to a large degree, eliminate the disadvantageous swirling movement of the projected air, causing uniform substantially rectilinear projection of air into the hood or distributing member which encircles the head.

Another object is to provide a hair drier where a maximum amount of air may be circulated or projected upon the scalp by means of a single source of power, such' as a motor,

and whereby this air will be eficiently heated and distributed uniformly at different points upon the scalp.

More specifically it is an object to provide a hair drier wherein fresh air is drawn laterally into the casing of the device from oppositely disposed lateral air intake ports and projected longitudinally of the casing over efficient heating elements and the heated air under pressure distributed uniformly upon the scalp through a dome-shaped confining hood. Y

These and other objects and advantages of the invention will be fully set forth in the following description ma'de in connection with the accompanying drawings, in which like reference. characters refer to similar parts throughout the several views, and in which Fig. 1 is a side elevation of an embodiment of our hair drier with a portion of the headconfining hood broken away;

Serial No. 512,014.

Fig. 2 is a cross section taken on the line 2 2 of Fig. 1 showing the disposition of the heating elements with respect to the discharge passage of the main casing;

Fig. 3 is a cross section taken on the line 3-3 of Fig. 1 showing the disposition of the Inotor and fans;

Fig. 4 is a rear elevation of the device;

Fig. 5 is a side elevation of a suitable form of fan detached;

Fig. 6 is a plan view of the inner shell or dome which forms a portion of the confining hood, and

Fig. 7 is a view partially in top plan and partially in horizontal section of a somewhat l modiiied form of the invention.

Our hair drier is preferably mounted on a portable pedestal the base of which is not shown in the drawings, said pedestal including an upright tubular post 8 within which is slidably and adjustably mounted a supporting stem 9 carrying a suitable head l0 to which is secured an upstanding substantially semi-circular attachment bracket 11 which adjustably supports the drier proper. i5

Our device includes a main casing 12 which is preferably tapered from its rear to its forward end, the rear end of said casing being closed by means of an enlarged ornamental cap 12a preferably telescoped over the rear edge of casing 12 and suitably secured thereto. The forward end of casing 12 is in open communication with an air distributing chamber C, said chamber being defined by outer and inner dome- shaped hoods 13 and 14 respectively. Hoods 13 and 14 are of generally similar shape, being of different diameters.

The outer hood 13 has an enlarged cylindrical air intake opening formed therein and is 1 fitted or telescoped with the forward end of casing 12. The inner hood 14 is provided with an imperforate portion 14a extending directly in front of the forward end of casing 12 and has a series of air discharge ports 146 properly 1 disposed to effect a uniform distribution of the heated air upon different portions of the scalp. It will be noticed that the inner hoodv 14 has an outturned iange 140 which forms a closure at the lower end of chamber C, said 100 flange engaging the inner periphery of the outer hood 13. At the rear and lower portion of the inner hood 14 a series of relatively small air discharge ports 14d are formed adapted to direct air laterally from the rear of chamber C against the back of the head and neck portion of .a person treated by our device.

In the form of the invention disclosed in Figs. 1 to 6 inclusive a suitable electric motor M is disposed within the medial portion of casing 12 with its armature shaft 15 extending horizontally and transversely of the axis of said casing. Both ends Vof armature shaft 15 are projected for some distance beyond the ends of the motor casing and a pair of cooperating fans F are fixed to the projecting ends of the armature shaft. Fans F are of the centrifugal type whereby air will be drawn axially of the fan and discharged circumferentially thereof.-

Y Oppositely disposed air intake passages 16 are formed in casing 12 axially aligned with fans F and motor M and suitable circular gratings 17 are secured to the exterior of the casing over said air intake passages, said gratings having outwardlyextending bosses 17a which are pivotally connected by means of bolts 17?) with the upper ends of the forked or semi-circular supporting bracket 11. Wing clamping nuts 18 engage the outer ends of bolts 175 for the purpose of adjustably securing the casing 12 in a desired tilted position with reference to the horizontal axis of bolts 17 Within the forward end of casing; 12, heating elements H, as shown, two in number, are provided, said elements being disposed vertically and spaced from casing 12. As shown, elements H c-omprise coils of nichrome wire wound about insulated or porcelain cores, said cores being suitably supported from insulated plates'19 fixed to the interior of casing 12.

The heating elements are electrically connected with contacts of a switch box (not shown)` mounted within the lower portion of cap 12a and other contacts of said switch box are electrically connected with service wires 20a disposed in an electrical cord 20 which may be plugged into a` suitable electrica-l outlet socket. The switch box may be provided with a series of switches of the tumbler type the handles 21 of which are disposed exteriorly of the rear of cap 12a and as shown three of said switches are provided, one for controlling the operation yof the electric inotor'and'one each for controlling the operation of the. respective heating elements.

The construction shown' in Fig. 7 is generally similar to the structure of the form of the invention first described with the exception, however, that motor M is positioned in the rear portion of casing12 with its arma- Vture shaft extending axially of said Vcasing In both forms of the invention illustrated eflicient means are provided for lubricating -he bearings of the motor. As shown, said means comprise apair of downwardly extending diverging oil tubes 26 connected at their upper ends with a valved oil gland 27 which projects through the top of the casing 12 above motor M. The lower ends of tubes 26 communicate with the bearings for the armature shaft 15 of the motor.

In operation the air will be drawn into casing 12 through the lateral intake passages 16 entering axially of fans F and being discharged circumferentially of said fans. Since the rear end of casing 12 is closed by means of cap 12a, the discharged air will be delivered forwardly of the casing and projected in substantially straight lines, most of said air impinging against the heating elements H which are spaced from the forward end of casing 12 and disposed advantageously in front of the converging intake passages of chamber C. The volume of chamber C which is defined by thespaced relation of dome hoods 13 and 14 is such that the air will be maintained; at slightly above atmospheric pressure within said chamber during the operation of our device. This heated air is discharged through air directing ports 145 and 14d upon the hair and scalp of the head which is confined within the hood. The ports are so arranged that a uniform and advantageous distribution of heated air will be effected drying all portions of the hair. It will be noticed that a number of relatively small ports 14d are disposed at the rear and lower portion of the distributing hood. These ports effect a lateral and slightly upward projection of air about the neck and lower portion of the head preventing the downward discharge of air against the shoulders and neck of the person treated and thereby relieving to a large extent the discomfort commonly caused by most commercial driers.

The cooperation of the two oppositely disposed fans in the tubular casing 12 with the heating elements and distributing hood formed by the spaced casings 13 and 14 provides an eliicient and advantageous means forV causing a relatively large volume of air to be uniformly distributed in the chamber C and projected upon the hair and scalp. It will be obvious that the rapid swirling movement of the heated air which is common to most commercial driers is eliminated.

From the foregoing description it will be seen that We have invented a thoroughly practical, efficient hair drier adapted to be manufactured at low cost, compact in struc-- ture and adapted to deliver and uniformly distribute a very large volume of heated air.

It will, of course, be understood that various changes may be made in the form, details, proportions and arrangement of the parts, without departing from the scope of our invention, which, generally stated, consists in a device capable of carrying out the objects above set forth and in the novel parts and combinations of parts disclosed and defined in the appended claims.

What is claimed is l. In a hair drier, a casing having an open forward end, a pair of centrifugal type fans mounted on the opposite ends of a common shaft which extends transversely and medially of said casing, a motor for driving said shaft, said casing having oppositely disposed air intake openings in the peripheral wall thereof substantially axially aligned with said shaft, a scalp confining hood attached to the forward end of said casing and comprising inner and outer spaced shells cooperating to form a substantially domeshaped air discharge chamber, said outer shell having a relatively large aperture formed therein for telescopically receiving the outer and open end of said casing, said inner shell having an imperforate portion disposed directly forward of the open end of said casing and having a series of spaced air distributing ports and heating units within said casing disposed between said fans and said scalp confining hood.

2. In a hair drier, a casing of substantially cylindrical cross section, a motor mounted within said casing and having its armature shaft disposed substantially diametrically of said casing, the armature shaft of said motor projecting from both ends of the motor oase, a pair of centrifugal type fans fixed to the projecting ends of said armature shaft, a scalp encircling hood connected with the forward and open end of said casing and supported thereby and having a series of air distribution apertures, heating elements mounted in said casing forwardly of said fans, said casing having a pair of oppositely disposed air intake passages axially aligned with said fans, spiders secured to said casing over said air intake passages, said spiders having central bosses, a U-shaped bracket p pivotally connected to said bosses, a standard supporting said bracket and means for frictionally connecting the outer ends of said bracket with the bosses of said spiders.

In testimony whereof we aiix our signatures.

PAUL KUNIAN. JULIUS GOLDBERG.

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