US1694317A - Electric fan - Google Patents

Description

Dec. 4, 192a 1,694,317

ELECTRIC FAN Filed Oct. 11, 1926 2 Sheets-Shem 1 z r j jV/////l////V as I 45 i i g 57 4 j; 5 0 755 jamzzelaacfi lNVENTOR ATTORNEY 5'. GOOD ELECTRIC FAN Filed Oct. 11, 1926 2 Sheets-Sheet INVENTOR ATTORNEY WITNESS:

Patented Dec. '4, 1928.

UNITED STATES;

PATENT OFFICE.

SAMUEL GOOD, OF .NEWTON, KANSAS.

' "nnnctrmo FAN.

'Application filed October ,11, 1926. Serial No. 140,940.

. room where the device is used.

An important object is the provision of a fan of this character in which the base and rotatable pedestal are provided with coacting contact means whereby the current supply will be fed to the motor, positive contact being maintainedat all times.

Another object is the provision of a fan of this character in which the pedestal carrying the motor and the fan proper rotate always in the same direction instead of oscillating or moving back and forth as is the action in some types. I

An additional object is to provide a device of this character which will be simple and inexpensive to manufacture, easy to assemble, positive in action, efficient and durable in service, and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction, the combination andarrangementpf parts to be hereinafter more fully described and claimed, and illus-' trated in the accompanying drawings, in which Figure 1 is a side elevation of the complete device with the major portion thereof shown in section. 1 4

Figure 2 is a cross sectional view taken on the line 2-2 of Figure 1. I

Fi re 3 is a horizontal section taken on the 11116 3-3 of Figure 1, with the bearing balls omitted.

Figure 4 is a bottom plan View of the relatively rotatable member which moves with the pedestal. I

Figure 5 is a top plan view of the relatively stationary member or that one carried by the base and equipped with the contact brushes.

4 Referring more particularly to the drawings, the numeral designates, generally, the

stationary supporting base upon which is rotatably mounted a hollow pedestal 11 which carries the electric motor 12 for driving the fan indicated'as a whole by the numeral 13.

The base-10 is preferably, though not necessarily, of circular form and is provided at one side with an opening 14 for the passage of the current carrying wires 15 which supply the necessary current to the motor 12. At its central portion the base is depressed at the top, as shown at 16 and is formed with gear teeth 17. Outwardly of the depressed portion the top of the base is formed with a circular ball race 18 within which are mounted bearmg balls 19 engaging within a corresponding race 20 in the lower end of the pedestal 11.

Located centrally of the depressed portion 16 of the base and suitably secured with respect thereto is a block-like member 21 of insulating material within which is suitably anchored a metallic sleeve 22 having a terminal stem 23 and containing a brush 24 ur ed upwardly by a coil spring 25. The mem er 21 is formed with a reduced portion 26 at its upper end, and within this reduced portion is suitably anchored a metallic sleeve 27 having a terminal stem 28 and containing a brush 29 urged upwardly by a spring 30. The current carrying wires 15 are'connected respectively with the stems 23 and 28 and secured thereto as by means of suitable nuts 31.

Extending centrally through the member 21 and rotatable therethrough is a shaft 32 having a preferably squared upper portion 33 extending through a rectangular opening 34 in a spider "or transverse member 35 with- .in the pedestal, securing being effected as by means of a set screw 36 to which access may be had from the outside of the pedestal in case it is desired to disconnect the pedestal from the base. Slidable and non-rotatably mounted about the shaft is a disk 37 of insulating material carrying a pair of concentric metallic rings 38 and 39 spaced apart or located in difl'erent planes, the ring 38 engaging the spring plressed brush 24 and the ring 39 engaging. t e brush 29. These two rings 38 and 39 are held upon the disk 37 as by suitable terminal bolts 40 and 41 respectively to which are connected wires 42 which connect with the motor 12. Obviously, current will be supplied through the wires 15 to the brushes and contact rings and thence throu h the wires 42 to the motor 12 regardless o the rotary movement of the pedestal 11 with respect to the base. A collar 43 carrying the disk by a depending portion thereof is suitably secured, as by a set screw 44, upon the squared portion '33 of the shaft, and engaging beneath a shoulder 45 onthis collar and abutting against the top of the disk 37 is a coil spring 46 provided for the purpose of urging the disk 37 downwardly to insure contact of the rings 38 and 39 with the brushes 24 and 29.

The motor 12 is of course provided with a shaft 47 which is journaledthrough a laterally elongated casing portion 48 of the pedestal and which carries the fan 13, the fan preferably operating within the confines of a guard 49 which is suitably secured to the easing portion 48. The shaft 47 also carries a worm 50 meshing with a worm wheel 51 on the upper end of an inclined downwardly extending shaft 52 which is journaled through suitable bearings 53 within the pedestal and which has its lower end carrying a gear 54 meshing with the gear teeth 17 In the operation of the device, it will be readily apparent that when current is supplied to the wires 15 and transmitted through the brushes, contact rings and wires 42 to the motor 12, the motor will be operated in the usual manner for rotating the fan 13. As the motor shaft 47 turns, it is clear that the worm 5O meshing thereon meshing with the worm 51 will operate to drive the shaft 52, and as this shaft carries the gear 54 meshing with the gear teeth 17 it is obvious that the pedestal and motor and fan carried thereby will rotate as a unit with respect to the base 10. Clearly, the draft of air produced by the action of the fan will thus be directed about all portions of a room or other encloreally believed that the construction, operation and advantages will be readily appar- 4 ent to one skilled in the art without further explanation.

While I have shown and described the preferred embodiment of the invention, it should be understood that I reserve the right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claim.

Having thus described the invention, I claim:

In' a device of the character described, a base having a depressed central portion in its top, gear teeth formed on the vertical wall of the depressed portion, a hollow pedestal mounted for rotation upon said base, an elongated casing portion formed with the upper end of the pedestal, a motor carried by the pedestal and the elongated casing portion, said motor being disposed laterally of the pedestal and upon one end of the casing portion, a guard secured to the opposite end, a shaft included in the motor and longitudinally disposed through the casing )ortion, a fan on the shaft and arranged in t he guard, superposed bearings projecting inwardly from the inner wall of the pedestal and disposed respectively at the top and bottom thereof, an inclined shaft arranged for rotation in the bearings, a gear on the lowe1 end of the inclined shaft and meshing with the gear teeth, means on the shafts for transmitting rotation from the motor shaft to the inclined shaft, a transverse men'fber arranged substantiall centrally of the pedestal, ashaft detachahly secured in said transverse member, cooperating contact members carried by the depressed portion and last mentioned shaft respectively, andmeans for electrically connecting one contact member to the motor and the other contact member to a source of electrical ener In testimony whereof I a 2: my signature;

SAMUEL GOOD.

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