US2190118A - Motor driven fan - Google Patents

Description

Feb. 13, 1940. G. F. HARDIN 2,190,118

MOTOR DRIVEN FAN Filed Jan. 28, 1937 5 Sheets-Sheet 1 Feb. 13, 1940. a. F. HARDIN MOTOR DRIVENTAN Filed Jan. 28, 1957 5 Sheets-Sheet 2 I Feb. 13,1940.

G. F. HARDIN MOTOR DRIVEN FAN Filed Jan. 28, 195';

3 Sheets-Sheet 3 QWUMM Patented Feb. 13, 1940 1 UNITED srlvrss smear oasis MOTOR DRIVEN FAN George F. Hardin, McKenzie, Tenn. Application January 28, 1937, Serial No. 122,871 3 Glaims. (Cl. 230--254) This invention relates to alr conditioning apparatus, the primary object of the invention being to provide an electrically controlled -fan having means whereby the fan may be adjusted 6 to cause the. fan to revolve, oscillate or remain stationary, to the end that the fan may be employed asa means for creating a circulation throughout-the entire area of the room, or may direct a current of air. to a particular location within the room; at the Will of the operator.

An important object of the invention is the provision of means whereby the blast of air caused by the fan, may be utilized in controlling the movements of the fan, thereby eliminating the necessity of using mechanical means, such.

as motors or the like, for controlling the movements of the fan.

Another important object of the invention is to provide an electric fan constructed in such a way that heated or cooled air may be drawn through the fan and directed into the room to be circulated-by the fan.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and inthe details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the'finvention herein described, maybe made within the scope of what is claimed,

without departing from the spirit of the invention.

Referring to the drawings: Figure 1 is a side elevational view of a fan constructed in accordance with the invention, the base and pedestal of the fan. being shown in vertical section.

Figure 2 is a front elevational View of the fan.

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 1.

employed for tilting the control blades.

Figure 9 is a modified form of fan construction, illustrating the fan as positioned over hot 5 air or cold air ducts.

Figure 8 is a top plan view disclosing the mean Figure 10 is a plan view disclosing themeans for operating the control blades. 9

Figure 1.1 is a plan view of the control blade adjusting means.

Referring to the drawings in detail; the rei- 5 erence character 5 designates a hollow base in which the tubular support 6 is mounted, the tubular support being connected to the head i,

.to which the motor casing 8 is adjustably connected, as at 9. Roller hearings it are mounted 10. within the hollow base, and have connection with the tubular support '0 in such a way that free. rotary movement of the tubular support 6 within the hollow base 5, will be permitted.

As clearly shown by Figure 1 of the drawings, the tubular support 6 extends an apprer ciable distance below. the lower roller bearing H], where it provides a support for the nuts 1 I, between which the spring arms it are held. These spring arms l2 curvedownwardly and in 2'0 wardly', and provide supports for the contact. members l3 which wipe the collector rings 24 mounted in the'block it, that is constructed of insulating material. Wires It, which connect with a suitable source of electricity supply, p'ro- 25 vide means whereby electric current may be sup"- plied to the collectorrings Hi, through the contact rings-l1, to which the wires It are. connected. Thus it will be seen that due to. this .construction, a sliding contact is had betweenso the tubular support, and the base. Wires t8 connect with the contact members 13, and lead tothe fan motor, which is mounted within the motor casing 3. The fan motor is of the usual and well known construction and includes the bladesZfl that are mounted on the motor shaft 21.:

The fan guard is indicated generally by the reference character 22' and is constructed preferably of wire arranged in such a way as to provide bearings 23 that accommodatethe shafts 40. of the control blades 2 that are disposed directly in front of the blades 29; of the fan. Rods 25 have pivotal connection with the control blades so that the blades move in unison. Secured at the upper end of the shaft on which. the central control blade is mounted, is an actu-- ating member embodying spaced arms 25 and 21,

which arms are provided with threaded openings through which the adjusting screws 28 extend, the position of theadjusting screws being such that the inner ends thereof will lie in the path of travel of'the central control blade .24 for purposes to be hereinafter more fully described. Forming a part of the actuating device,.is an arm 29 that extends rearwardly therefrom,the am:

29 being provided with a pin near its free end, over which one end of the coiled spring 30 is mounted, the opposite end of the coiled spring 30 being connected to the central control blade 24, near one edge thereof, as shown by Figure 8 of the drawings. Thus it will be seen that due to this construction, the control blade at the center of the fan guard, will be held in a predetermined position, for a period of time to permit the blade to cause a rotary movement of the entire fan on its base. Pivotally connected to the central control blade 24, and disposed adjacent to the lower end thereof, is an arm 3 I, which.

arm is of a length to extend to a point where it shown by Figure 9 of the drawings.

may contact with the arms 32 mounted on the posts 33, as the fan rotates. These posts 33 are carried by the members 33 that are frictionally held within the base of the fan, the posts extending through slots in the base, so that the arms 32 may be adjusted with respect to each other to regulate the movements of the fan. When the arms 32 have been moved to positions within the path of travel of the arm 3!, and the arm 3! contacts with the arms 32, it will be seen that further rotary movement of the fan will cause the control blade to move to a reverse position, with the result that the spring will snap past dead center and move the blades to positions to direct air from the fan in the opposite direction, which will of course rotate the fan in the opposite direction returning the fan to its initial position.

As the fan rotates to a position to engage the arm 32 at the opposite side of the fan base, the

control blades are moved in the opposite direction reversing the movement of the fan. It will of course be understood that when the arm 3! has sult in the fan rotating continuously.

In the form of the invention as shown by sheet 3 of the drawings, a double fan structure is provided, and includes the hollow base 34 in which the tubular support 35 is mounted, the tubular support being held in roller bearings, as clearly The motor casing is indicated by the reference character 35', and completely surrounds the motor indicated at 36, the fan casing 35 being in communication with the hot air pipe 31, and cold air pipe 38. The hot air pipe 31 is in communication with a source of hot air supply, so that hot air may be drawn into the fan casing 5 by the fans, and directed into the room for heating purposes. Should it be desired to cool the temperature of the room, the damper 39 in the cold air pipe 38,

is moved to allow cold air to pass into the fan casing where it is blown into the room.

Damper 40 controls the passage of hot air through the hot air pipe 31, into the fan casing.

In this form of the invention, the control blades are indicated by the reference character fill, the central control ,blade being so arranged that it may be moved to a position between lugs 4| of the bar 42, with the result that the control blades may be moved to various positions of adjustment, and at various angles with respect to the air blast from the fan. It will of course be understood that as the air from the fan strikes the control blades, the casing together with both fans supported by the casing, will be rotated continuously.

From the foregoing it will be seen that due to the construction shown and described, I have provided an electric fan which may be controlled to cause the fan to rotate continuously, oscillate, or remain stationary at the will of the operator.

Having thus described the invention, what is claimed is:

1. An electric fan comprising a base, a motor supported on the base, pipes having enlarged upper portion merging into a discharge opening and providing communication between the pipes, said base being mounted'within the enlarged upper portions of the pipes, a housing in communication with the pipes and completely encasing the motor, ians operated by the motor and adapted to draw air through the pipes and housing, and means for controlling the passage of air through the pipes and housing.

2. An electric fan comprising a base, a motor mounted on the base, an air inlet pipe, said base being mounted within the upper end of the air inlet pipe and spaced therefrom to allow air to pass upwardly to the fan through the air inlet pipe, and means for rotatably mounting the motor on the base.

3. An electric fan comprising a base, a motor supported on the base, pipes having enlarged upper end portions merging into a discharge opening and providing communication between the pipes, said fan base being mounted within the enlarged upper portions of the pipes, a housing rotatably mounted at the upper ends of the pipes and communicating with the pipes through said discharge opening, said motor being mounted within the housing and being completely encased in the the pipes and housing.

GEORGE F. HARDIN.

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