US1374658A - Electric fan - Google Patents

Description

G. H. HOHNSBEEN.

ELECTRIC FAN.

APPLICATION FILED FEB. 24. 1919.

1,374,658, Patented Apr. 12, 1921.

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UNITED STATES GEORGE E.

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PATENT OFFICE.

MINNE APOLIS, MINNESOTA.

ELEc'raIc FAN.

|Speci'fication of Letters Patent. Patented Apr. 12, 1921.

Application filed February 24, 1919. Serial No. 278,747;

To all whom it may concern: v Be it known that I, GEORGE H. HOHNS-, BEEN, a citizen of the-United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Electric Fans, of which the following is a specification. My invention relates to a fan used for creating a circulation of air within a room or inclosed space andthe object of the invention is to provide an attachment for the fan by means of which currents of cold air introduced into a room by means of the fan may be heated to any desired degree of temperature while passing the fan, and

thereby fresh pure air can be taken in from out of doors and delivered by means of the fan and its air heating attachment at any desired point where fresh air is needed but cold air, even though fresh, would be objec- .tionable.

The invention conslsts generally in various constructions and combinations, all a hereinafter described and particularlypointed out in the claims. In the accompanying part of this specification,

Figure 1 is a'front view of an electric fan with my attachment applied thereto.

Fig. 2 is a plan section of the" device.

Fig. 3 is a detail sectional view showing the manner of mounting the'heating device drawings forming 2 represents a suitable electric plug 3 at its lower end, adapted to enter a socket 4:- mounted in a base 5 and provided with a suitable electric conductor 6. The standard may be easily and quickly removed from the base and inserted into a socket in the wall or ceiling or any other suitable point where it is desired to mount the fan. The standard is provided with the usual forked arms 7 wherein an electric motor 8 is mounted. A conductor 9 leads from this motor down through the standard to the In the drawing, standard, having an plug 3 10 is the shaft of the motor and 11 a fan mounted thereon. 12 is the usual wire g-uard for the fan. On this guard I provide rods 13 composed preferably of a suitable gage of wire and held in parallel relatlon. Between the wires 13 on each side of the center of the guard I provide a block 14 of porcelaln or any other suitable non-conduct ng materialhaving recesses 15. in its long tudinal edges into which the wires 13 are-inserted for holding the block in place between them. Each block has a longitudinal recess 16 extending therethrough from end to end. In the center of the guard is a disk 17 having a plurality of contact surfaces 18 thereon and a switch arm 19 mounted to move backand forth'over the surfaces 18 for regulating the speed of revolution of the fan. A conductor 20 leads from the switch arm 19 to a bar 21 that is mounted in one of the recesses 16 by suit able means, such as screws 22, and from th1s 'bar a conductor 23 extends to the motor and a conductor 9 for regulating the current delivered to the motor and the revolution of the fan.

On the outside of each block 14: I provide a resistance coil 24 having conductors 25 at one end in circuit with the motor and conductors 26 and 27 at the other end leading to a contact surface 28 and a switch arm 29. By means of this switch arm the current may be broken through'the resistance coils" whenever desired to allow the fan to be used without the heater, and whenever theuser of the fan desires to heat-the currents of air 1t is only necessary to move. the switch arm air currents flowing temperature and whenever it is desired to use the fan merely as a means for moving the airin the-.room' without attempting to establish" incoming currentsof cold, fresh air, the switch of the heating device may be moved to the off position and the fan will .then be used as an ordinary desk or table air circulating fan.

The device maybe used on the standard,

as shown, or it may be mounted-in a socket provided in the ceiling or wall of the room or space where it is desired to heat theincoming air currents.

I claim as my invention:

1. The combination, with an electric fan and a guard for the-blades thereof and a standard adapted for mounting on a base or for wall or ceiling use, of rods mounted in parallel relation on said guard and extending across the same from side to side, blocks of insulating material supported by said rods on each side of the center of said guard,

fan blade and past which the currents of air are directed by the revolution of the fan,

said heating device including resistance coils mounted on the guard in front ofthe fan.

3. The combination, with an air circulat- =ing.fan, of a resistance coil mounted adjacent said fan and in the path of the air currents and having an electric circuit, and

' means for controlling the flow of the current through said coil, saidfan having a standard provided with an electric plug for mounting it in different positions. i

4. The combination, with an electric fan and a guard therefor and a standard for said fan having an electric plug for. mount- 1ng 1t 1n dlfi'erent positlons, of resistance coils mounted on said guard upon opposite sides of the center of the fan, electric conductors communicating with said coils and with the fan motor, and switches interposed between said coils for controlling the flow of the current to said motor and said-coils.

5. The combination, with an electric fan and a guard for the fan blades and a standard for the fan, of a demountable base for said standard having a socket for making an electrical connection with said standard,

said standard being adapted for mounting in said base or in a fixed socket for wall or ceiling use, and an electric heating device past which'currents of air are directed by the revolution of said fan, said heating device including resistance coils mountedv in front of the fan and having an electric circuit.

'6. The combination, with an electric fan and a standard for the fan having a plug for mounting it in a base or in a fixed socket for wall. or ceiling use, and an electric heating device mounted in front of and adjacent the fan blades and past which currents of air are directed by the revolution of the fan.

7. The combination, with an electric fan having a standard provided with a plug for mounting it on a base or in the wall or ceiling, of a heating device comprising resistance coils having an electric circuit and rods mounted on the guard of the fan and formingsupports for said coils.

In witness whereof, I have hereunto set my hand this 12" day of February, 1919.

' GEORGE H. HOHNSBEEN.

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