US1354098A

US1354098A - Oscillator for electric fans

Info

Publication number: US1354098A
Application number: US329960A
Authority: US
Inventors: Maurice M Glasser
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-10-11
Filing date: 1919-10-11
Publication date: 1920-09-28
Anticipated expiration: 1937-09-28

Description

M. M. GLASSER.

OSCILLATOR FOR ELECTRIC FANS.

APPLICATIQN HLED OCT. 11, 1919.

Patented Sept. 28, 1920.

3 SHEETS-SHEET I.

IN YEN TOR lfll'lassez' ATTORNEYS M. M. GLASSER.

OSCILLATOR FOR ELECTRIC FANS.

APPUCAHON FILED OCT. ll, I919.

Patented Sept. 28, 1920.

3 SHEETS-SHEET 2v A TTORNEYS MW. m8 m M. M. GLASSER.

OSCILLATUR FOR ELECTRIC FANS.

APFLECATHJN F ILED OCT. II l9l9.

Patented Sept. 28, 1920.

3 SHEETS-SHEET 3.

wmv TOR HHG Z0886 z' UNITED STATES PATENT OFFICE.

OSCILLATOR FOB ELECTRIC FANS.

Application filed October 11, 1919.

To all whom it may concern Be it known that I, MAURICE M. GLAssnR, a citizen of the Unitedstates, and a resident of Charleston, in the county of Charleston and State of South Carolina, have invented certain new and useful Improvements in Oscillators for Electric Fans, of which the following is a specification.

My invention is an improvement in oscillators for electric fans, and has for its ob ject to provide mechanism of the character specified for use especially in connection with ceiling fans, having mechanism for oscillating the motor casing to cause the blast from the fan to swing through a fixed are for continuously changing the direction of this arc, thus greatly broadening the scope of the fan.

In the drawings:

Figure 1 is a front view of a fan provided with the improved oscillator;

Fig. 2 is a view at right angles to Fig. 1;

Fig. 3 is a. section on the line 3-3 of Fig. 1; a

Fig. 4 is a vertical section through the fan mounting;

Fig. 5 is a similar view of the connection between the fan mounting and the oscillator.

The present embodiment of the invention is shown in connection with a fan composed of a suitable motor arranged within the easing 1, the fan 2 being mounted upon the motor shaft 3. This motor casing 1 has oppositely extending journal pins 4, which are journaled in bearings 5 in the arm 6 of a yoke whose body 7 has at its center an upstandingsleeve 8. Within this sleeve there is journaled the lower end of a hollow post 10 which has a base 11 ca able of being secured to the ceiling or 0t er fixed support.

As shown more particularly in Fig. 4 the post 10 is annularly grooved intermediate its ends as shown at 12, and a ball bearing 13 is arranged between the shoulder formed at the lower end of the groove and a washer 14 which is connected to theupper end of the sleeve 8 by screws 15 or the like. The sleeve 8 is rotatable on the hollow post 10, and the yoke and sleeve are supported by the 0st, by means of the ball bearing 13.

Tiie conductors 16 and 17 which carry the current to the motor "in the case 1 are connected with rings 18 and 19, respectively, which are held on the lower end of the 0st, the post having openings, as shown in 1g.

Specification of Letters Patent.

Patented Sept. 28, 1920.

Serial No. 329,960.

4, through which the conductors extend to their connection with the rings, it bein understood that the said rings are insulated from the post and from each other.

Brushes 20 are secured to the sleeve 8 at opposite sides thereof by means of binding posts 21, and

conductors

22 and 23 lead from the binding posts to the connections of the motor. The brushes, during the rotation of the yoke. move in contact with the rings 18 and 19, completing the circuit whatever the movement of the yoke 678.

In order to oscillate the motor casing on the journal pins 4' the upper end of the motor shaft 3 extends into an auxiliary casing 25 at the top of the motor casing 1. Within this casing the shaft has a worm 26 which actuates a worm gear 27 upon a horizontal shaft 28 journaled in the auxiliary casing and in an extension 29 from the said auxiliary casing. The outer end of this shaft carries a disk 30 and a link 31 connects this disk with a fixed disk 32 supported by the adjacent arm of the yoke 67, the link being connected eccentrically to both disks. The arrangement is suc that when the fan is rotating the shaft 2 will be driven and because the disk 32 is fixed the motor casing and the fan will be oscillated through an arc of approximately 30. With this arrangement the blast from the fan would sweep across the floor, for instance, in a straight line in one direction. However, I provide mechanism for continiilous-ly changing the direction of this line so that the blast from the fan will sweep over many lines, the said mechanism continuously rotating the yoke 7 on the hollow ost 10 in one direction.

The said mec anism comprises a ratchet wheel 38 rigid with the lower end of the hollow post 10, and a pawl 34 pivoted on an arm 35 extending radially from the lower end of the hollow post. The arm is loosely journaled on the post to swing with respect thereto, and the pawl is normally pressed into engagement with the, ratchet wheel by a spring 36. This arm 35 also carries a depending pin 37 which fits between the arms of a fork 38 on the upper end of an arm 39 extending radially upward from one of the journal pins 4 and rigid with the motor casing. The arrangement is such that when the motor casing oscillates the arms of the fork will move the pin in opposite directions. In one direction the pawl 34. will slip idly over the teeth of the ratchet Wheel, while in the other direction the pawl will engage the ratchet teeth. turning the ratchet wheel and imparting intermittent movement in the same direction to the yoke ti -7.

In operation. as the fan rotates. the motor casing will be oscillated. swinging on the journal pins l. that is. swinging on a horizontal axis when the fan is mounted on the ceiling. At each complete swing or oscillation of the motor casing the ratchet wheel 33 is moved through a predetermined are. and since it is rigid with the yoke (i-l the yoke will be turned. so that each sweep or oscillation of the fan will have a differ ent angle. Thus the sweeps or oscillations of the fan will rotate about a fixed center. namely. the axis of the post 10.

I claim:

1. In an electric fan. the combination with the motor casing. of a yoke comprising a body and arms having bearings. the motor casing having journal pins journaled in the bearings. a connection between the tan and the yoke for oscillating the motor casing on the journal pins when the tan is rotated. a sleeve extending transversely of the body of the yoke at the centerthereof. a post for supporting the fan on which the sleeve is journaled. a ratchet wheel secured to the lower end of the post. an arm pivoted to the post below the ratchet wheel. a pawl car ried by the arm and engaging the wheel. said arm having a depending pin. and a fork carried by the motor casing. the pin engaging between the arms of the fork.

2. In an electric fan. the combination with the motor casing. of a yoke com n'ising a body and arms having bearings. the motor casing having journal pins journaled in the bearings, a connection between the fan and the yoke for oscillating the motor casing on the journal pins when the fan is rotated. a sleeve extending transversely of the body of the yoke at the center thereof. a post for supporting the fan on which the sleeve is journaled, a ratchet wheel secured to the lower end of the post. and means controlled by the oscillation of the motor casing for intermittently advancing the yoke in the same direction.

3. In an electric, fan. the combination with the motor casing. of a yoke comprising a body and arms having bearings. the motor casing having journal pins journaled in the bearings, a connection between the fan and the yoke for oscillating the motor casing on the journal pins when the fan is rotated. a support for the fan with which the body of the yoke is rotatably connected to rotate on an axis at right angles to the axis of oscillation of the motor casing, means controlled by the oscillation of the motor casing for intermittently rotating the yoke on its sup port, said means comprising a ratchet wheel supported by the fan support. an arm pivoted at the axis of the ratchet wheel and carrying a pawl engaging the wheel. the motor casing carrying a fork and the arm having a pin engaging between the arms of the fork.

4. In an electric fan. the combination with the motor casing. of a yoke comprising a body and arms having bearings. the motor casing having journal pins journalcd in. the bearings. a connection between the tan and the yoke for oscillating the motor casing on the journal pins when the tan is rotated. a support for the fan with which the body oi" the yoke is rotatably connected to rotate on an axis at right angles to the axis of the oscillation of the motor casing. and means controlled by the oscillation of the motor casing for intcrmittcntl rotating th yoke on its support.

5. In an electric fan. a yoke comprisiim a body mounted to rotate at its center on an axis per])endicular to the body. and arms. the motor casing of the fan being journalcd between the arms to swing on an axis at right angles to that of the yoke's rotation. means controlled by the rotation of the fan for oscillating the motor casing with respect to the yoke. and means controlled by the os cillation of the motor casing for intermit tently rotating the yoke on its axis in the same direction.

6. In an electric tan, a yoke for support ing the motor casing of the fan. a support for the yoke with which the yoke is con nected to rotate on an axis coinciding with the axis of rotation of the fan. a connection between the yoke and the motor casing for oscillating the casing on the yoke when the fan is turning. a connection between the motor casing and the yoke for intermittently rotating the yoke on the support when the motor casing is oscillated. said support having rings of conducting material connected with the terminals of the circuit. for the fan. and brushes connected with the terminals of the motor and engaging the rings.

7. In an electric fan, a yoke comprising a body and arms. the yoke being mounted to rotate at its center on an axis perpendicular to the body. the fan having a motor casing journalcd between the arms of the yoke to swing on an axis at right angles to that of the yokes rotation. and means controlled by the oscillation of the motor casing for intermittently moving the yoke on its axis.

MAURICE M. GLASSER.