US2573445A - Drier-heater - Google Patents

Description

Get. 30, 1951 R. R. HUTCHESON 2,573,445

DRIER-HEATER Filed March 26, 1949 2 SHEETS-SHEET l a -i Z INVENTOR.

Fa y E jfidresalt )ww KM/ Patented Oct. 30, 1951 DRIER-HEATER Ray R. Hutcheson, Brooklyn, N. Y., assignor to E. A. Laboratories, Inc., Brooklyn, N. Y., a corporation of New York Application March 26, 1949, Serial No. 83,651

1' Claim. 1

This invention relates to a structurally and functionally improved apparatus primarily adapted for hair and other drying purposes, as well as for generally producing a forced flow of air for ventilation or heating purposes.

Among the objects of the invention are those of producing an extremely compact apparatus which will involve relatively few parts capable of economical production and ready assemblage to furnish a unitary apparatus operating over long periods of time with freedom from all difficulties and which apparatus may be used for numerous diilerent purposes although it will be especially valuable when employed for hair drying and where it is desired to direct a blast of heated or unheated air in a pre-determined direction. V v

With these and other objects in mind, reference is had to the attached sheets of drawings illustrating one practical embodiment of the invention and in which:

Fig. 1 is a perspective view of the complete apparatus;

Fig. 2 is a transverse sectional view taken along the lines 2-2 and in the direction of the arrows as indicated in Fig. 1;

Fig. 3 is a sectional side view of the unit taken along the lines 33 and in the direction of the arrows as also indicated in Fig. 1;

Fig. 4 is a sectional plan view taken along the lines 4-! and in the direction of the arrows as indicated in Fig. 3;

Fig. 5 is a perspective view of the heating unit which forms a part of the assembly; and

Fig. 6 is a somewhat schematic view of the wiring circuit which may be embodied in the apparatus.

Referring primarily to Fig. 1 the numeral It indicates a casing preferably formed of sheet metal and conveniently of rectangular configuration such that it may rest upon a supporting surface. The front and rear ends of this casing are closed by end members II and 12 which may be suitably retained in position by securing elements such as l3. A handle l4 may be attached to the upper face of easing I0 so that the latter may readily be transported. The front covering member H is preferably provided with an apertured grill or discharge member l5. The side walls of easing [0 may, as especially shown in Fig. 2, be provided with air-admitting grills l6 conveniently of an ornamental character.

As especially shown in Figs. 2, 3, and 4 a motor I6 is disposed within the casing 10. This motor is arranged midway of the inlets defined by the grilled or apertured guards l6. Secured to its shaft H is a member [8 mounting blades to define a blower wheel structure IS. The latter is encircled by a casing 20 having its side walls provided with openings. This assemblage of structure may be supported by a strap or bracket member 2| having its upper and lower ends secured as at 22 to the corresponding walls of casing. H1. The blow-er wheel housing 20 terminates in a discharge portion 23. An adapter 24 may be suitably secured to the latter and terminate in line with and within the discharge grill housing l5. As will be observed, the rear end of the adapter 24 is preferably larger than the discharge end 23 of housing 20.

Suitably supported within the adapter by, for example, brackets 25, is a body 26 convenient-1y of ceramic material. It is preferred that this body be cross shaped in section and that its longitudinal edges be grooved as indicated at 21. Within these grooves a resistance 28 is disposed so that the body of the resistance takes the form of a coil. A fusible link 29 is mounted upon the body 26 and has one of its ends connected to the resistance 28 substantially midway of the ends of the latter. The opposite end of this link may be connected to a power-supplying lead 30. The opposite ends of the resistance 28 are connected to leads 3| and 32.

A second power-supplying lead, 33, is connected with a switch 34 provided with a contact from which a lead 35 extends to motor I 6. A second lead 36 also extends from this motor and is directly connected with the power-supplying lead 30. A lead 31 extends from the same terminal or contact which supplies leads 35 and is connected with a switch 38. The latter has contacts 39 and 4!] connected to leads 3| and 32 respectively.

Thus, it will be understood that with leads 3!) and 33 connected to a suitable source of power supply, it will primarily be necessary to throw the mechanism of switch 34 to on position, to close the circuit through lead 35 which will cause a functioning of motor l6 and an operation of the blower wheel. Only at that time is lead 31 energized so that current may flow through re sistance coils 28. Normally switch 38 will be in the off or open position. When it is shifted so that current may flow from lead 31 to contact 40 and then through lead 32, one-half of the resistance will be energized. When switch 38 is shifted so that current may flow from lead 31 also to contact 39 and lead 3|, then both sections of the resistance are energized and a maximum degree of heat is generated. This will be the unit, then the temperature will build up to the critical degree and link 29 will fuse. This will interrupt a flow of current through the supply lead 30 to the resistance and accordingly the latter will be de-energized. It will be apparent that this result will obtain whether both or only a single section of the resistance are energized.

In using the apparatus it will be apparent that a blast of air will be generated by the blower wheel and discharged through the grill or guard housing l5. Dependingupon the position of the switch 38 this air may be either cold or warm. When that switch energizes contact 39 and leads 3|, a maximum degree of heat will be generated. When only contact 40 and lead 32 ar energized, then a lower degree of heat will be produced. As is apparent by having the adapter 24 of larger size than the discharge end 23 of the housing 20 air flow will be induced directly from the housing into the adapter. This will create a desirable condition such that a' maximum heat exchange and cooling of the resistance will follow.

Thus, among others, the several objects of the invention as specifically aforenoted are achieved. Obviously numerous changes in construction and rearrangement of the parts might be resorted to without departing from the spirit of the invention as defined by the claim.

I claim:

A heating apparatus including in combination a casing, a motor driven fan within said casing, an intake opening and a discharge opening in said casing, a rectangular tubular adapter shell adjacent to and extending inwardly from said casing discharge opening, a housing disposed around said motor driven fan formed with an inlet opening and a discharge portion, said dis charge portion adjacent to and having a slightly smaller cross-section than said tubular adapter shell, a path around said housing discharge portion for reception of air into said tubular adapter shell, a cross-shaped body positioned longitudinally of said tubular adapter shell and extending through a major portion of said shell length, longitudinal edges of said body supported on and adjacent to but spaced from an inner surface of said tubular adapter shell, an electrical resistance wound into a coil around said cross-shaped body and over said longitudinal edges, said coil projecting at said longitudinal edges into said air path in 's'aid'shell, and channels between said resistance coil and said body for passing air from said motor housing whereby, in addition to air emerging from said discharge portion of saidhousing flooring beneath said resistance coil, air flowing through said air path and over said elec trical resistance coil Will pass through said tubular adapter shell,

RAY R. HUTCHESON.

REFERENCES CITED The following references'are of record in the file of this patent:

' UNITED STATES PAIENIS Number Name Date 815,915 Fallek Mar. 20,1906 1,594,906 Gross Aug. 3, 1926 1,760,997 ShBltOn June 3, 1930 2,027,605 McCord et al Jan. 14, 1936 2,149,689 Smith et al. Mar. 7, 1939 2,311,899 Marlowe Feb. 23,- 1943

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