US1577461A - Ceiling fan - Google Patents

Description

March 23 1926.

M. M. GLASSER CEILING FAN Filed Oct. 7, 1922 6310: new! Patented Mar. 23, 1926.

warren raves MAURICE M. GLASSER, F CHARLESTON, SOUTH CAROLINA.

CEILING FAN.

Application filed October 7, 1922. serial No. 593,031.

To all whom it may concern Be it known thatl, Harmon M. GLASS'ER, a citizen of the United States, and a resident of Charleston, in the county of Charleston and State of South Caroliiia, have invented certain new and useful 1m provements in Ceiling Fans, of which the following is a full clear, and exact description, reference being had to the drawinga torn'iii'ig a part of this specification.

This invention relates to ll1'1131'0\"t.l11':1i in ceiling fans. I v

.In my prior Patent No. 1,409,090, dated March 7, 1922, there is disclosed a ceiling fan embodying means for alternately increasing and decreasing the area affected by the blasts of air created by the revolving fan blades. This result is obtained in said fan by oscillating or swinging the blades alternately in opposite directions transversely of the horizontal plane in which they revolve.

The present invention has for its object to improve upon the mechanism for obtaining the oscillatory motion of the revolving fan blades. f

In the accompanying drawings- Figure l is a side view of a tan embodying the present improvements;

Fig. 2 is a top plan view of the fan, and

Fig. 3 is a vertical sectional view of a portion of the fan structure showing the mechanism for oscillating the fan blades.

As illustrated in the drawings a casing 10 is provided 'for the fan motor, preferably an electric motor, and saidcasing and motor are rotatably mounted on the lower end of a depending shaft 11 whose base 12 is secured to the ceiling. Shaft 11 may be made hollow and the lead wires for supplying current to the motor may extend therethrough,

Extending radially from the casingior rotor of the motor 10 is a series of fan blades 13 adapted to revolve with said casing or rotor 10 and, as in my prior patent before mentioned, the blades are pivotally supported at their inner ends by suitable pivotal connections 14 that will permit them to swing up and down or transversely of the plane in which they revolve.

In accordance with the present invention, however, a vertically disposed worm 15 is rigidly mounted on the shaft 11 and surrounding and in mesh with said worm is a series of gear wheels 16 rotatably mounted on axes parallel to the pivotal centers of blades 13 and corresponding is were is the sure her of said blades. Said wheels 16 are journaled in a suitable supportingframe journaled on shaft 11 to permit said wheels to revolve bodily about worm 15, thereby imparting a rotary movement to the wheels about their journals and this rotary movementof the wheels is utilized to etlect the oscillatory motion of blades 13.

Proi'erably each blade 1 of the fan has one end of a link 1'7 pivotally connected thereto while the opposite end of each link is pivotally connected to a crank pin or one of the gear wheels. As the blades 13 are caused to revolve by the motor they will, through the link connection 17, cause wheels 16 to travel around worm 15 with the result 7 that the wheels will be rotated on their own axes and this rotary movement of the gear wheels will gradually raise and lower the blades relatively to the plane in which they revolve, depending upon the direction of movement of the ends of the links that are eccentrically attached to the wheels. In other words, as will be apparent, one complete revolution of one of the wheels 16 will distances from the axis of the wheel and the upper end of link 17 may be attached at any one of the sockets by a crank pin 19. Other formsot detachable connections for the links and wheels will readily suggest themselves but the form snown is n'eterred as it has practically no weakening effect on the wheels. This connection also permits the blades to be adjusted with respect to each other so as to permit one blade to move upwardly as the opposite blade moves downwardly or they can be adjusted to move in the same direction simultaneously.

lVhile the gear wheels 6 may be carried in any desired form of supporting frame,

so long as they are arranged on axes parallel to thepivotal centers of blades 13 and are free to travel around worm 15,,said wheels are preferably journaled in bearings formed in depending forked arms 20 adjustably so:

cured at their upper ends to a disk 21 rotatably mounted on shaft 11 or, as shown, on the worm screw which is adjustably mounted on shaft 11.

The present mechanism is cheap, simple to install and presents the advantage of a smooth, regular action in shifting of the angles of the blades without producing noise when the change in direction of movement occurs.

Obviously any type of motor with internal or external rotors may be employed as this forms no part of the present invention.

What is claimed is: V

1. In a ceiling fan, the combination of a motor and its rotor, a series of hinged blades carried by said rotor, a shaft supaorting said motor and blades, and means carried by the shaft and connected to said blades for swinging said hinged blades transversely of the plane in which they re volve, said means, with the exception of the connections with the blades, being fixed longitudinally of the shaft.

2. In a ceiling fan, the combination of a motor and its rotor, a series of hinged blades carried by the rotor, a shaft supporting said motor and blades, and actuating means carried by the shaft and connected to the hladrs for swinging the hinged blades, there being adjustable connections between said actuating means and blades, said actuating means with the exception of the connection with the blades being fixed longitudinally of the shaft.

In a ceiling fan, the combination of a supporting shaft, a motor and its rotor eavried on the shaft, blades hinged to the rotor, a worm on said shaft, a series of rotatable gears meshing with said worm, and connections :arried by said blades for moving the worm and the series of gears relatively to one another for rotating the gears and thereby oscillatin the blades a. In a ceiling fan, the combination of a supporting shaft, a motor on the shaft, blades hinged to the rotor of the motor, a

worm rigidly mounted on the shaft, :1 series of worm gears meshing with said worm, and connections between the blades and gears whereby rotation of the blades will revolve said gears around the worm and oscillate the blades.

In a ceiling fan, the combination of a supporting shaft, a rotatable casing, radially extending blades carried by the casing and hinged thereto to swing transversely of the plane in which they revolve, and means carried by the shaft and connected with the blades and controlled by the revolution of the blades for swinging said blades, said means with the exception of the connection with the blades being fixed longitudinally of the shaft.

6. In a ceiling fan, the combination of: a supporting shaft, a rotatable casing, a series of blades adapted to revolve with the rotating casing and pivoted to swing transversely of the plane in which tney revolve, a worm mounted on said shaft, a series of worm gears meshing with said worm and rotatable on xes parallel to the pivotal ce iters of the. blades, and connections between said. blades and gears for lk r volving the gears around the worm, said connections being attached to the gears eccentrically of the centersof the gears whereby rotation of the gears will oscillate the blades on their pivotal centers.

'7. In a ceiling fan, the combination of a supporting shaft, a rotatable casing, a series of blades adapted to revolve with the rotating casing and pivotally mounted to swine, transversely of their plane of rotation, a worm mounted on the shaft, a series of go meshing with the worm and adapted to travel around said worm, each of said gears having a series of sockets arranged eccentrically of its center, a link connected to each blade. and means for detachably connecting each blade and link to one of said gears at one of the sockets in the latter.

llIAUIt-ICE M. GLASSER.

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