US1394975A - Oscillating fan - Google Patents

Description

P. DE CLAMECY. OSCILLATING FAN.

' APPLICAHON FILED MAR. 9. 1920.

Patented Oct. 25, 1921.

2 SHEETS-SHEET l.

P. DE CLAMECY. OSCILLATING FAN.

- APPLICATION FILED MAR. 9: I920- 1,394,975.

Patented Oct. 25, 1921.

2 SHEETS-SHEET 2.

fitness Inventor $.Ma/M fig; '7

M/L Z UNITED STATES PATENT OFFICE.

PHILIPPE DE CLAMECY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO B. F. STURTEVANT COMPANY, OF HYDE PAR-K, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

OSGILLATING FAN.

Application filed March 9,

T 0 all whom it may concern Be it known that I, PHILIPPE nn OLAMECY, a citizen of the United States, residing at Boston, in the county of Sufiolk and State of Massachusetts, have invented certain new and useful Improvements in Oscillating Fans; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 1

This invention relates to oscillating fans and more particularly to fans which are oscillated by the action of air currents produced by the rotation of the fan blades upon current obstructing means carried by the oscillating element of the fan and operated to alternately obstruct the delivery of, air at opposite sides of the axis of oscillation.

One object of the present invention is to provide a fan of the general character above indicated in which the current obstructing means is rendered operative to effect the reversal of the direction of oscillation of the fan solely by the action of air currents pro duced by the fan.

To this end a feature of the invention comprises the provision, in an oscillating fan, of a current obstructing device supported by the oscillating element of the fan, said device being free to rotate continuously in the same direction about the axis of rotation of the fan wheel and presenting to the air blast aface which is inclined to the plane of rotation of the fan blades.

Other objects of the invention and the features of constructionby which they are attained will be set forth hereinafter in con'-' nection with the following description of what is now considered to be the preferred embodiment of the invention illustrated in the accompanying drawings, in which Figure 1 is a View in front elevation'of the fan; Fig. 2 is a view in side elevation thereof, a portion being broken away to disclose parts of the fan otherwise obscured;

and Fig. 8 is a detail sectional view, on an enlarged scale, showing the current obstructing device, the section being taken on the line 33 of Fig. 1.

As illustrated in the drawings, anelectric motor 4: having a rotary fan wheel 5 secured to its armature shaft, is pivotally mounted Specification of Letters Patent.

Patented Oct. 25, 1921.

1920. Serial No. 364,422.

upon a post 6 which is journaled to oscillate freely in a hollow pedestal 7 rising from a stationary base 8. The pivotal connection between the motor 4i and the post 6, which permits tilting adjustment of the motor and fan to vary the path swept by the air blast of the fan, comprises a bolt 9 that extends transversely through the top of the post and through a pair of tongues 10 depending from the motor casing and embracing the post. The pivot bolt 9 is-provided with a thumb-screw 11 by means of which the tongues 10 areclamped to the post to hold the motor in its angularly adjusted position. The post 6 may be supported, as shown, upon ball-bearings 12 and it may be made hollow to permit the passage therethrough of the wires leading from the motor. The

fan wheel 5 is inclosed and protected from contact with exterior objects by the usual cage or guard frame 14 which is rigidly attached to the motor casing.

In order to attain a greater range of tilting adjustment of the motor and fan than that permitted by the pivotal connection between the motor and the post 6, provision is made for universal angular adjustment of the pedestal 7 and the base 8. To this end the pedestal and base are connected by means of a ball-and-socket joint, disclosed in a co-pending application Serial No. 359,998, filed February 19, 1920, by the pres ent applicant and assigned to the B. F. Sturt-evant Company. For the purpose of insuring that the fan will be easily oscillated by the action of its own air blast upon a current obstructing device, irrespective of whether the post 6 and pedestal T are sup ported in vertical or tilted positions, the motor l is so disposed with respect to the post 6 that the motor and allpartscarried thereby are perfectly balanced on opposite sides of the axis of oscillation of the fan.

The currentobstructing device, against this end the disk 15 is carried by a supporting arm 16, radially projecting from a bearing sleeve 17, which is ournaled on a stud 18 that is Carried by the cage or guard frame ture shaft of the motor.

14 and is disposed co-axially with the arma- The stud 18 is removably secured to a hub 19 (Fig. 4) from which the guard frame wires radiate, the stud having at one end a reduced threaded portion which projects through a central opening in the hub 19 and which is provided with a nut 20 that is tightened against the outer face of the hub. The bearing sleeve 17 is confined and free to turn between a head 21, at the inner end of the stud 18, and a spacing collar 22 that is interposed between the sleeve and the hub 19 of the guard frame. 7

The current obstructing disk 15 is of such form and is so disposed, with its face inclined to the plane of rotation of the fan wheel, that the blast of air produced by the fan will tend to rotate the disk about thestud 18. In order to facilitate the rotation of the obstructing disk 15, the weight of the disk, the supporting arm 16, and certain other associated parts, shortly to be described, are exactly balanced'by a counterbalance Weight23 that is carried by a weight arm 24: radially projecting from the bearing sleeve 17 on the opposite side of the stud 18 1 from the disk-supporting arm 16.

In the construction shown, the obstructing disk15 is st ffened and maintained in its laterally flexed condition by means of a. fiat reinforcing disk 25 having laterally projecting from its periphery a segmental flange 26. The flat reinforcing disk 25 is disposed in a plane parallel to the plane of rotation of the fan wheel. The edge of the flange 26 rises gradually'from each of its ends, which lie in the plane of the disk 25,

to the middle point of said edge, and one side of the curved obstructing disk 15 is secured adjacent its periphery to this edge of the flange 26 and to the marginal portion of the disk 25 which intervenes between the a the guard frame 14.80 as to readily effect the oscillation of the motor and fan, a

ends of said flange. I

. In order to transmit the thrust of the obstructingdisk to the peripheral portions of spherical roller 27 is journaled on a pin 28 projecting radiallyifrom the flange 26 of the supporting frame for the obstructing disk, and arranged'to roll over an annular I, ported in a plane parallel to the plane of rotation of the fan wheel with its peripheries concentric with the path of rotation of the roller 27. With this construction, the

bearing stud 18, about which the obstructingv disk rotates, is relieved of the thrust of said 5 f disk, and the obstructing disk itself is prevented from being laterally displaced by the force of the air blast from the fan. 7

name of the manufacturer of the fan or an appropriate name-plate or trademark. In order that any legend or display which it may be desired to associate with the obstructing device shall be constantly maintained in an upright position so that the display will be readable or properly presented to view at all times, provision is made for preventing the display matter from being turned relatively to the axis of the fan as the obstructing device rotates. To this end a separate disk 30 is provided to carry the legend or display, and thisdisk 30 is centrally pivoted by a pin 31 to the front of the reinforcing disk 25 and the display disk 30 is provided with a weight or thickened portion 32 which causes the former to rotate freely about its pivot 31, as it travels bodily with the obstructing member about the stud 18, so that its thickened portion 32 is maintainedllowermost by gravity.

1 While the particulars of construction herein set forth are well suited to one form of the invention, it is to be understood that these particulars are not essential since they may bevariously changed or modified without departing from the true scope of the actual invention as definedoby the following claims. a 1 1,

Having described'the invention, what is claimed as new is I 7 1. An oscillating fan having, in combination, a motor, a fan wheel, a support upon which the motor and fan wheel are arranged to oscillate, a current obstructing device adapted to be rotated about the axis of the" fan wheel to cause the, fanto oscillate alter nately inopposite directions as it, rotates,- a guard frame carried by the motor and in-.

closing the fan wheel, a track supported by the guard frame, and a bearing membercarr ed by the current obstructing device for engaglng Wlth' the track as said dev1ce;ro-' tates.

p 2. An oscillating fan having, in combina-: tion, a motor, a fan wheel, a support upon,

which the motor and fan wheel are arranged to osclllate, and a current obstructingdevice adapted .to' be rotated continuously about the axis of the fanwheel to cause the fan tooscillate alternately in. opposite directions as it rotates.

3. An oscillating fan having, in combination, a motor, a fan wheel,asupport upon which the motor and fan wheel are arranged" to-oscillate, and a current obstructing device adapted to be rotated continuously about 7 theaxis of the fan wheel by the action of iao the current of air produced by the fan to cause the fan to oscillate alternately in opposite directions as it rotates.

4. An oscillating fan having, in combination, a motor, a fan wheel, a support on which the motor and fan wheel are mounted to oscillate, the support comprising a base and a pedestal connected therewith with provision for angular adjustment relatively thereto, the motor being so disposed relatively to the support that the weight of the motor and fan is balanced on opposite sides of the axis of oscillation of the fan, and a current obstructing device adapted to be rotated continuously about the axis of the fan wheel by the action of the current of air produced by the fan to cause the fan to OS- cillate alternately in opposite directions as it rotates.

5. An oscillating fan having, in combination, a motor, a fan wheel, a support on which the motor and fan wheel are arranged to oscillate, and a current obstructing device supported by the oscillating element of the fan, said device being free to rotate continuously about the axis of the fan wheel and presenting to the current of air produced by the fan wheel a face inclined to the. plane of rotation of the latter whereby the action of said current effects the rotation of said member.

6. An oscillating fan having, in combination, a motor, a fan wheel, a support on which the motor and fan wheel are arranged to oscillate, a current obstructing device pivotally mounted for balanced rotation about the axis of the fan wheel and presenting an inclined face to the current of air produced by the fan whereby the obstructing member is caused to rotate continuously and the fan wheel to oscillate alternately in opposite directions during the rotation of the latter.

7. An oscillating fan having, in combination, a motor, a fan wheel, a guard frame carried by the motor and inclosing the fan wheel, a support on which the motor and fan wheel are arranged to oscillate, and a current obstructing device for causing the fan to oscillate alternately in opposite directions as it rotates, said device comprising a disk mounted to present an inclined face to the current produced by the fan at one side of the axis of rotation of the latter, a support for said disk, a bearing stud carried by the guard frame and arranged coaxially with the armature shaft of the motor on which the disk support is mounted to rotate, a counter weight for balancing the weight of said disk and disk support, an annular track carried by the guard frame, and a roller carried by the obstructing device and bearing against said track to transmit thereto the thrust of the obstructing device.

8. An oscillating fan having, in combination, a motor, a fan wheel, a stationary support on which the motor and fan wheel are arranged to oscillate, a current obstructing device supported by the oscillating element of the fan and adapted to be rotated continuously about the axis of the fan wheel by the action of the current of air produced by the fan to cause the fan to oscillate alternately in opposite directions as it rotates, and a display member pivoted above its center of gravity to said obstructing device to cause it to rotate about its pivotal connection with the obstructing device as the latter rotates about the axis of the fan wheel so asto prevent the display member from being turned relatively to the stationary fan support during said rotation of the obstructing member.

9. An oscillating fan having, in combination, a motor, a fan wheel, a stationary support on which the motor and fan wheel are arranged to oscillate, a current obstructing disk supported by the oscillating element of the fan and adapted to be rotated con tinuously about the axis of the fan wheel by the action of the current of air produced by the fan to cause the fan to oscillate alternately in opposite directions as it rotates, a display disk disposed in a plane substantially normal to the axis of the fan wheel and centrally pivoted to the obstructing disk, and a weight secured to said display disk adjacent its periphery to cause the latter to rotate about its pivotal connection with the obstructing device as the obstructing device rotates about the axis of the fan wheel so as to maintain the display disk against turning relatively to the stationary fan support during said rotation of the obstructing disk.

10. An oscillating fan having, in combination, a motor, a fan wheel, a stationary support on which the motor and fan wheel are arranged to oscillate, a current obstructing device supported by the oscillating element of the fan and adapted to be rotated continuously about the axis of the fan wheel by the action of the current of air produced by the fan, said device presenting an inclined face to said current of air and having an oppositely directed display face disposed in a plane normal to the axis of the fan wheel.

11. An oscillating fan having, in combination, a motor, a fan wheel, a support on which the motor and fan wheel are arranged to oscillate, a current obstructing device supported by the oscillating element of the fan, said device being arranged to rotate about the axis of the fan wheel and presenting to the current of air produced by the fan wheel a face inclined to the plane of rotation of the latter, and means for transmitting the thrust of said member to the outer portions of said oscillating element.

PHILIPPE DE' CLAMECY.

Images