US2152112A - Oscillating fan - Google Patents

Description

March V28, 1939. TA H TORNBERG y 2,152,112

OSC ILLAT ING FAN WITNESSES: INVENTOR 72 v Torszef? Tornbe/j'q.

. ATTORNEY March 28, 1939. T. H; TORNEI-:RG

OSCILLATING FAN Filed May 25, 1957 3 Sheets-Sheet 2 I E 3fm 44@ L L I WITNESSES: INVENTOR 55a To/S/z A. Tor/Mery.

WM f5 k 50 ATTORNEY Patented Mar.. 2s, 1939 UNITED STATES PATENT vOFFICE to Westinghouse of Pennsylvania Electric & .Manufacturing Company, East Pittsburgh, Pa.,

a corporation Application May 25, 1937, seri-a1 No. 144,622 9 claims.' (ci. 23o-e256.)

My invention relates to oscillating fans andl more particularly to the construction of the,v driving mechanism of such fans. u

An object of my invention is to provide a rugged, compact, efficient, silently operating fandriving mechanism. 4

A further object of my invention is to provide a motor housing a portion of which will be part of a cover for the fan-driving mechanism. A further object of my invention is to provide a cover which will enclose the entire fan-driving mechanism.

A furtherobject of my invention is to provide an oscillating mechanism housing which will serve also as a bearing for the driving motor.

A further object of my invention is to provide a stop-block, which may be die-cast, in juxtaposition with the swivel pin.

A further object of my invention is to provide a.` motor construction whereby the stator is resiliently held in position within the motor housing and whereby the starting switch therefor is located between the housing and the stator.

Other objectsof my invention will either be pointed out specically in the course of the following description of the device embodying my invention, or will be apparent from such descrip- I tion.

Referring to the accompanying dravings, Figure 1 is a partial elevational end sectional view of a device embodying my invention,

Fig. 2 is a partial plan and sectional view of the device, I

Fig. 3 is a sectional view taken along the line. III-III of Fig. 1, 4

Fig. 4 is an elevational view of a portion of the device shown in Figs. 1 and 2,

Fig. 5 is a partial lsectional view of a swivel mechanism embodied in my invention taken along line V-V of Fig. l; and,

Fig. 6 is a partial front elevationalview of my device.

Referring to the accompanying drawings, I show a fan driving mechanism comprising a motor I2, an oscillating mechanism I3, a cover I4 which totally encloses the motor I2 and oscillating device I3, and a swivel pin mechanism I5 swing- 'ably mounted upon the stand I6. 'l

,- The motor I2 comprises a housing including a front bracket 20 and a removable rear bracket 2 I A laminated stator 22 and a laminated rotor 23 are operatively associated with the stationary bracket 2|] and'removable bracket 2|.

55 The stationary bracket 20 has a plurality of ribs 24 located therein and a double-wall dished section 25v located substantially in the bottom portion thereof, said dished section 25 being defined byupper and lower wall portions 25a and 25D, respectively. The ribs 24 have a notched 5 shoulder 26 on the inner surface thereof upon which the stator 22 rests. A bearing housing 21 is likewise located substantially in the center of such stationary bracket 20. A plurality of small protuberances 28 are located within the bracket 20 10 and each has an aperture 29 therethrough.

The removable bracket 2| is of dished shape and has a bearing housing 30 located substantially in the center thereof. The removable bracket 2| rests upon the ribs'24 and is held in position thereon by through-bolts 3|, which are inserted through an aperture 35 therein and through the aperture 29 located within the protuberances 28. The through-bolts 3| extend outside ofthe stationary bracket 20 and are heldV rigidly thereto 20 by means of suitable nuts 32.

The through-bolts 3| protrude throughthe apertures 33 located within the stator 22, and within a resilient member 34 located between the stator 22 and the removable bracket 2|, so that as through-bolt 3| draws the removable bracket 2| tightly against the ribs 24, against the action of the resilient member 34, such resilient member will bias the stator 22 .against the notched 3o shoulder portions 26 of ribs 24. It is, therefore, apparent that should the stator member 22 become loosened from the notched ribs 24 for any reason whatsoever, such as jars or vibrations, or the expansion of the stationary bracket 20 be- 35 cause of heat, the resilient member 34 will resiliently hold the stator within the motor housing. It is to be understood that while the stator member 22 may be resiliently held in position within the motor housing comprising the -sta- 40 tionary bracket 20 and the removable bracket 2 I, in a manner as hereinabove described, that any other suitable method of resiliently holding the stator within such housing will be satisfactory.

The oscillating mechanism I3 comprising a housing 38 and a removable cover 39 therefor, are preferably' integral with the removable bracket `2|. The energy-'translating mechanism 40, lo-

cated within the housing 38, conriprses` a series l of gears which change the horizontal rotational energy delivered thereby by--means of rotor 23 to the vertical rotational energy delivered therefrom by means of shaft 4|. An irregularly shaped crank 42 is rotatably attached to the bot- 55 tom of said shaft 4| and swingably attached to the oscillating block 43.

Anv oscillating knob 36 is removably.. attached to the upper or protruding end of the vertical clutch' cap 44a in any suitable manner. However, it is preferred that such knob have an irregular shaped aperture 41 located within the bottom portion thereof, as shown in Fig. 3 and Fig. '7, to 4cooperate with a correspondingly irregular shaped tine section 56 of such clutch cap 44a.

As the knob 36 is placed upon the cap 44a, the

parallel to the plane tines 51 will be forced together ensuring a good mechanical connection between the knob 36 and the clutch cap 44a. However, it is to -be understood, that due to the sliding fit between the knob 86 andclutch cap 44a, the knob 36 can be readily removed when desired.

v".Ihe cover I4 may comprise a front stationary section 28 which is the stationary bracket 28 of motor I2 and a removable rear cover 44 which is held tightly against the front bracket 28 and over the ribs 24 by means of a screw 45 operatively associated with the rear cover 44 and a shoulder portion 46 of the oscillating housing 38. The rear cover 44, in combination with the front cover or front motor bracket 20, forms a c over, which may be of any shape desired, that totally encloses the motor and the operatively associated oscillating 'mechanism. It is to be understood that the stationary front bracket covering 28 removably retains the removable bracket 2| and the rear cover 44 thereagainst by means of the through-bolts 3| which are inserted through the removable bracket 2| and said front bracket 28.

The swivel Apin mechanism I comprises a swivel pin 48, a stop block 49, a forked retaining member 58, a stop pin device 5| and a wing nut retaining screw 52. The swivel pin mechanism I5 including the forked member 58 may be mounted upon any suitable stand I6.

The swivel pin 48 comprises a hardened portion 53 and a head portion 54 with an aperture 55 therethrough. The stop-block 49 is preferably die-cast about the head portion of the swivel pin 48 and has an aperture 55a therethrough coaxially with the aperture 55 through the swivelpin head portion 54. The wing-nut 'bolt 52 is inserted through the forked portion 58, and a clutch plate 63 operatively associated with the die-cast stop-block 49 and swivel head portion 54 and the remaining tine of the form member 58. It is to be understood that with such a construction, the swivel pin 48 is then free to rotate about the wing nut bolt 52 in a plane substantially of the forked member 58 with the wing nut bolt 52 as an axis. The stop pin device 5| is rigidly attached to one tine of the fork member 58 or it may be an integral rpart of such forked member either as a pin or as an irregularly deformed portion of the forked mem-y ber whereby it will then prohibit the rotational movements of the swivel pin 48 and stop block 49. Thus the stop-block 49 when contactingv the stoppin device 5| will be limited in its rotation and thus act as a safety device by preventing the fan structure from completely rotating and injuring the fan blades.

A switch 58 is insulatedly mounted upon the stationary bracket .2,8 and has the handle portion 59 located on thegoutside of such casing. The switching portion gf mechanism 68 is located within the stationary front cover bracket 28 intermediate the bracket 28 and the resiliently mounted stator 22. 'I'he power leads 6I operatively associated with the switch 58 enter the cover I4 in any suitable :manner such as by insulating grommet 62. By having the switch 58 located between the housing 28 and the stator 22, such switch need not be constructed of the standard material, but may be merely a frame to support the switching mechanism 68. It is thus obvious that by locating the switch within the motor housing, such switch will not be subjected to the usual rough treatment of those switches located upon the outside of the motor housing. Such structure eliminates the need of a heavy casing for the switch and in turn reduces the cost of construction of such switch.

The stationary front cover bracket 28 is oscillatably or rotatably mounted upon the swivel pin 48 by having the shank portion 53 of the swivel pin 48 journaled within the double wall section 25 of the stationary bracket 28. By having the stationary bracket 28 oscillatably mounted upon the swivelfpin 48, it is obvious that the driving mechanism II will likewise be oscillatably mounted upon such swivel pin, since the y, stationary bracket 28 rigidly supports both the removable bracket 2| and the rear cover 44.

In assembling an oscillating fan driving mech-` anism as hereinabove described, the stator 22 is placed within the notched shoulder portions 26 of lthe ribs 24, and the rotor 23 is inserted through the sta-tor 22 and within the bearing housing 21 of the stationary bracket 28. The resilientmembers 34 are then located upon the stator 22. The removable bracket 2 I, operatively associated with the oscillating mechanism I3,v is then placed over and in operative relationship with the rotor 23, and upon the ribs 24, and resilient members 34. Then the through-bolts 3| are inserted within the apertures located upon the removable bracket 2|, the resilient member 34, the stator 22 and the stationary bracket 28, whereupon such re- 'movable bracketZI is drawn tightly against the stationary bracket 28 with the resilient member 34 biasing the stator 22 against the notched shoulder portions 26. yThen the rear cover 44 is removably mounted about theremovable bracket 2| and the oscillating mechanism I3, and held against the stationary bracket 28 by the screw 45 operatively associated with said cover and with the removable bracket 2|. The oscillating knob 36 is then removably attached to the shaft 4|, as hereinabove described` enabling an operator to control the oscillating mechanism 3 located within the rear cover 44. It is to be understood that, since the oscillating mechanism I3 is opera.- tively associated with the motor I 2 and the swivel pin 48, due to the operation of such oscillating mechanism the fan driving mechanism will be oscillatably rotated about the pin 48 with the operation of the motor I2.

The rotor 23 has a shaft 65 extending through the stationary bracket 28 and bearing housing 21 and has a fan 66 removably attached'thereto by means of a suitable collar 61 and set screw 68. A guard 69 is removably attached to the stationary bracket 28 by means of through-bolts 3| and nut 32. The guard 69 may have a plurality of irregular yradial wires 18, each havinga loop 1| therein, which are placed between the stationary bracket 28 and the nut 32 and are held in place thereon by through-bolts 3| and nut 32.

It is therefore obvious that with the Afan driving mechanism having a construction as hereinabove described, the housing therefor serv'es as a bearing for the driving motor and as a portion 02,'

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nism may be oscillatably mounted upon any suitable stand.

It is further obvious that the method of resiliently mounting or holding the stator within the motor housing by means of the powerful resilient member, as hereinabove described, ensures that such stator will remain permanently xed within the housing, and permits the removable bracket to be readily mounted in its proper position with respect to the motor stator and rotor.

Various modifications may be made in the device embodying my invention without departing from the spirit and scope thereof, and I desire, therefore, that only such limitations shall be placed thereon as imposed by the prior art and the appended claims. v

I claim as my invention:

1. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a rst cover portion in which one end of the rotor is journaled, means for supporting said stator within the first cover portion, a bracket within which the opposite end of the rotor is journaled, means for securing the bracket to said cover portion and a second cover portion enclosing said bracket and engaging the rst cover portion.

2. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a rst cover portion in which one end of the rotor is journaled, a plurality of ribs formed in the interior of the rst cover portion for supporting said stator in spaced relation within the first cover portion, a bracket within which the opposite end of the rotor is journaled, means for securing the bracket to'said ribs, and a second cover portion enclosing said bracket and engaging the rst cover portion.

r 3. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a rst cover portion in which one end of the rotor is journaled, means for supporting said stator within the first cover portion, means for biasing the stator inwardly of the first cover portion, a bracket within which the opposite end of' the rotor is journaled, means for securing the bracket to said rst cover portion, a second cover portion enclosing said bracket and engaging the rst cover portion, and means for securing said second cover portion to said bracket.

4. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a casing for enclosing the stator and rotor, a plurality of ribs formed on the interior of the casing for supporting said stator in spaced relation Within the casing, and a switch for controlling the operation of the motor disposed intermediate the casing and the stator, vsaid switch being supported by .the casing, and means disposed exteriorly of the casing for actuating the switch.

5. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a rst cover portion in which one end of the rotor is journaled, means for supporting said stator Within the rst cover portion, an oscillating mechanism operatively connected to the rotor and including a housing within which the opposite end of the rotor is journaled, means for securing the oscillating mechanism to said first cover portion and a second cover portion secured to and enclosing the oscillating mechanism, said second cover portion engaging the iirst cover portion.

6. 'I'he combination as claimed in claim 5 including means interposed between said oscillating mechanism and the stator for biasing the stator inwardly of the first cover portion.

7. In a fan driving mechanism, the combination of a motor including a stator and a rotor, a rst cover portion in which one end of the rotor is journaled,' means for supporting said stator in spaced relation within saidrst cover portion and including a plurality of ribs extending inwardly from said first cover portion, an oscillating inechanism including a bracket portion secured to said first cover portion, said bracket portion dening a journal for the opposite end of the rotor, a spring interposed between said bracket and said stator for biasing the latter inwardly of the first cover portion, and a second cover portion engaging the first cover portion in end-to-end relation for enclosing said oscillating mechanism.

8. In a fan driving mechanism, the combination of a motor, an oscillating mechanism driven thereby, a casing for enclosing the motor and oscillating mechanism, a substantially vertical pin about which said casing is oscillated, said casing including spaced walls adjacent the bottom thereof for deningl'a dished chamber, said pin extending through said spaced walls and the dished chamber, and means for connecting the oscillating mechanism to the portion of said pin that is disposed in the dished chamber.

9. In a fan driving mechanism, the combination of a motor, an oscillating mechanism driven thereby, rstand second cover portions disposed in end-to-end relation and enclosing the motor and the oscillatingimechanism, one of said covers being removable without disturbing the oscillating mechanism or the motor, an adjusting device for rendering the oscillating mechanism active and inactive and including a knob extending exteriorly of said one cover portion, said knob being removably carried by the adjusting device.

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