US1196255A

US1196255A - Oscillating fan.

Info

Publication number: US1196255A
Application number: US3402515A
Authority: US
Inventors: Willard M Mcewen
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-06-14
Filing date: 1915-06-14
Publication date: 1916-08-29
Anticipated expiration: 1933-08-29

Description

W. M. MCEWEN.

OSCILLATING FAN.-

APPLICATION FILED JUNE 14. 1915.

Patented Aug. 29, 1916.

WILLARD M. MQEWEN, OF CHICAGO, ILLINOIS.

OSCILLATING FAN.

Application filed June 14, 1915.

To all whom it may concern:

Be it known that I, WILLARD M. MolEwnN, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Oscillating Fans, of which the following is a specification. 7

The main objects of this invention are to provide an improved form of mechanism for swinging an electric fan simultaneously in two different planes, as for instance oscillating the fan horizontally and at the same time tilting it in a vertical plane; and to provide improved mechanism of this kind which effects the oscillatory movement by the tilting movement. v

An illustrative embodiment of this invention is shown in the accompanying drawing wherein: Figure 1 is a front elevation partly sectional of an electric fan equipped with the improved mechanism. Fig. 2 is a fra mentary rear end view of the upper part of the fan, some of the parts of the front being omitted for the sake of clearness. Fig. 3 is a sectional detail of the base.-

Tn the construction shown in the drawings, the blower mechanism comprises a fan 1, connected to a motor 2 rotatably mounted in a casing 3. The casing is tiltably supported on a member or shaft 4 journaled in a supporting member or standard 5, which is rigidly supported on the base 5.1. The fan 1 and motor 2 may be of any desired construction, the fan being provided with. the usual protecting guard 6 supported on the motor casing 3 by means of arms 7.

The connection of the motor casing 3 to the shaft- 4 comprises a lug 8 formed on theunder side of the casing, Whichis pivotally connected to the bifurcated head 9 of said shaft by a stud bolt 10. The blower mechanism is thereby supported so as to be tilted in the plane of the axis of said shaft. A suitable connection 11 is attached to the inner end of. the shaft 1 for securing the shaft against upward longitudinal movement in the member 5.

A sleeve or member 12 embraces the shaft 4 and is rotatably supported on the standard 5 by means of ball bearings '13, so that it will freely rotate independently of the shaft 4. The member 12 is provided with an integral "transversely disposed annular flange or track 14 concentrically arranged Specification of Letters Patent.

Patented Aug. 29, 1916.

Serial No. 34,025.

with respect to the shaft 11. This track is of wave-like form, and in the form shown there is an odd number of waves so that the crowns are diametrically opposite troughs of the wave. Gear teeth 15 are formed on the periphery of the track so as to provide an annular rack or gear which meshes with a pinion 16 to cause the fan to travel on the wavelike track. Rollers 17 journaled on trunnions 18 carried by the lug 8 engage the track 14 at diametrically opposite points, and coact with the crowns and troughs thereof, causing the fan 1 to tilt up and down in a vertical'plane. The pinion 16 is carried on a shaft 19 journaled in the casing 3 and is connected to the shaft of motor 2 by means of a worm 20 and gear 21.

The blower mechanism is arranged and mounted 011 the support, so that the center of gravity of the entire mass thereof is located forwardly of the axis of oscillation for all positions of said mechanism in the range of the tilting movement. In the construction illustrated in the drawings, this is accomplished by inclining the standard 5 to the base 5.1, so that when the base rests on a level surface the axis of rotation of both the shaft 4 and the sleeve 12, as represented by' line A, is disposed at an angle to a lineB, perpendicular to the base 5.1. This disposition of the mass tends to keep the preponderance of weight at one side of the axis of oscillation, whereby the driving action between the gear 16 and track 15 during the tilting back and forth is more nearly uniform than would be the case if during the tilting the center of gravity were first on one side of the axis and then on the other side. This type of fan, employs the same principle of oscillation as is described in my copending application, Serial Number 29,129, filed May 19, 1915, for electric fans, wherein by tilting the axis of rotation of the fan in a vertical plane gyratory forces are brought into play which cause the fan to swing in a horizontal plane and to reverse the direction of horizontal swinging whenever the direction of vertical tilting is-reversed. Increasing the inclination of the axis of oscillation increases the slope of the track 14, and reduces the angular range of the horizontal swinging.

In order to adjust or regulate the oscillatory action of the fan, means are provided for changing both the inclination of the supporting haft 1: and the location of the ion center of .gravity. The inclination of the shaft 4 is controlled by a plate 23 on the base 5.1, as more clearly shown in Fig. 3. This plate is formed so that at one side it is thicker than at the other. A rim 24 fits around the base 5.1, and secures'the plate in position. A pin or lug 25 is formed on one side of the plate by means of which the plate may be moved around the base 1 for the purpose of adjusting the position of the thick and thin parts thereof with respect to the base 5.1 so as to alter the inclination of the axis of the shaft at. The adjustment it may be locked in position on the fan. This construction provides forkgscillating the fan back and forth in a horizontal plane at the same time that it is being tilted up and down in a vertical plane and provides means for regulating said movements. The movements occur in the following manner: As the motor 2 rotates the fan 1, the pinion 16 engaging the rack 15 causes a relative rotation of the sleeve 12 and the. shaft 4. This rotation of the sleeve causes the wave-like track 14 acting on the rollers 17 to tilt the fan up and down in the plane of the axis of the shaft, whereupon the fan swings back and forth as a result of gyratory action produced by' the tilting. If the rotation of the fanis'clockwise, then looking at the front of the fan the forward oscillation or swing to the left occurs during the downward tilting, and the backward oscillation or swing to the right occurs during the upward tilting. The angularity of the horizontal oscillations is controlled by the rate of change in the tilt of the fan, which in turn is de termined by the speed of the track. Theo retically, the forward oscillation of the fan should begin at the instant the fan begins to tilt downward, and likewise should begin the backward oscillation at the instant the upward tilting begins, but due to the inertia of the'parts the reversal of the oscillations is delayed momentarily after the changes in direction of vertical tilting movement.

The angular range of horizontal oscillation may be regulated bythe inclination of the axis of such oscillation and by changing the location of the center of gravity with respect to the track. may be controlled by the shifting of the plate 23, and the latter by either the shifting of the plate 23 or the adjustment of the weight 26 or both. The greater the inclination of the axis of oscillation and the farther out the center of 'gravity is from the axis of oscillation, the greater will be the load on the forward roller 17 and the shorterthe angular range of horizontal oscillation. The

nearer the center of gravity is moved toward The former of these the axis of rotation, the more uniform will be the pressure on both of the rollers 17 and the greater will be the range of the horizontal oscillation.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. In an air circulating device, the combination of a support, rotary fan mechanism mounted to freely oscillate horizontally thereon, and mechanism for tilting said fan mechanism vertically, the center of gravity of said fan mechanism being always noncoincident with the axis of oscillation, whereby gravity will cooperate with said tilting mechanism to control the angular range of horizontal oscillation.

.2. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, and coacting means on said motor driven mechanism and on the other said member .adapted to tilt said motor driven mechanism transversely to the plane of 1'0 tation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, the mass of said motor driven mechanism being disposed so that the center of gravity thereof is always located at one side of the axis of oscillation of said members whereby gravity will be caused to regulate the oscillation of said mechanism.

3. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, coacting means on said motor driven .meehanism and on the other said member adapted to tilt said motor driven mechanism transversely to the plane of rotation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, the mass of said motor driven mechanism being disposed so that the center of gravity thereof is always located at one side of the axis of oscillation of said memmes es motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, and coacting means on said motor driven mechanism and on the other said member adapted to tilt said motor driven mechanism transverselyto the plane of rotation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, said members being mounted on said support with the axis of rotation thereof inclined, whereby the center of gravity of said motor driven mechanism is always lo cated at the side toward which said axis is inclined so as to regulate the oscillations of said mechanism.

5. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, coacting means on said motor driven mechanism and on the other said member adapted to tilt said motor driven mechanism transversely to the plane of rotation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, said members being mounted on said support with the axis of rotation thereof inclined, whereby the center. of gravity of said motor driven mechanism is always located at the side toward which said axis is inclined so as to regulate the oscillations of said mechanism, and means for varying the inclination of said axis.

6. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, coacting means on said motor driven mechanism and on the other said member adapted to tilt said motor driven mechanism transversely to the plane of rotation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, the mass of said motor driven mechanism being disposed so that the center of gravity thereof is always located at one side of the axis of oscillation of said members whereby gravity will be caused to regulate the oscillation of said mechanism, and means shiftably mounted on said motor driven mechanism so as to be adjusted for the purpose of altering the center of gravity of said mechanism.

7. In an air circulating device, the combination of a support, blower mechanism mounted to oscillate thereon about an inclined axis, and mechanism fortilting said and coacting means on said blower mecha nism and said member adapted to tiltsaid blower mechanism in the plane of the axis of said shaft, whereby said shaft will be caused to oscillate relative to said support, the mass of said blower mechanism being disposed so that the center of gravity is always located forwardly of said axis so as to regulate the oscillations.

9. in an air circulating device, the combination of a support, a shaft journaled thereon, a member rotatably mounted on said support concentrically of said shaft, blower mechanism tiltably mounted on said shaft, driving mechanism connected to cause arelative rotation of said member and shaft, and coacting means on said blower mechanism and said member-adapted to tilt said blower mechanism in the plane of the axis of said shaft, whereby said shaft will be caused to oscillate relative to said support, the mass'of said blower mechanism being disposed so that the center of gravity is always located forwardly of said axis so as to regulate the oscillations, said support comprising two parts joined on a line inclined from a perpendicular to the axis of said shaft, said parts being relatively shiftable for the purpose of varying the inclination of the axis of said shaft.

10. In an air circulating device, the combination of a support, comprising a standard and a base, a shaft journaled on said standard, amember rotatably mounted on said support concentrically of said shaft, blower mechanism tiltably mounted on said shaft, driving mechanism connected to cause a relative rotation of said member and shaft, and coacting means on said blower mechanism and said member adapted to tilt said blower mechanism in the plane ofthe axis of said shaft, whereby said shaft will be caused to oscillate relative to said support, said standard being joined to said base with the axis of said shaft inclined from a perpendicular to said base, so that the center of gravity of said blower mechanism is located at one side of said axis.

11. In an air circulating device, the combination of a support, comprising a standard and a base, a shaft journaled on said standard, a member rotatably mounted on said support concentrically of said shaft,

blower mechanism tiltably mounted on said -to said base, so that the center of gravity of said blower mechanismis located at one side of said axis, and a plate shiftably connected to said base for the purpose of varying the inclination of said axis.

12. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, coacting means on said motor driven mechanism and on the other said member adapted to tilt said motor driven mechanism transversely to the plane of rotation of said members and therebycause the oscillation of said one member and said mo tor driven mechanism relative to said support, the mass of said motor driven mechanism being disposed so that the center of the oscillation of said mechanism, and a weight shiftably mounted on said blower mechanism and adapted to be adjusted to alter the location of said center of gravity.

13. The combination of a support, a pair of members journaled on said support and capable of rotating relatively to each other, motor driven mechanism tiltably mounted on one of said members, driving mechanism connected to cause a relative rotation of said members, coacting means on said motor driven mechanism and on the other said member adapted to tilt said motor driven mechanism transversely to the plane of rotation of said members and thereby cause the oscillation of said one member and said motor driven mechanism relative to said support, and means shiftably mounted on said motor driven mechanism for shifting the center of gravity thereof so as to control the oscillation thereof.

Signed at Chicago this 11th day of June 1915.

WILLARD M. MoEWEN.