US819630A - Oscillating motor-fan. - Google Patents

Description

(put-messes IATENTEDMAY 1, 1966.

R. E. BARKER.

OSGILLATING MOTOR FAN. I

APPLICATION IILED'DEG. 10, 1903.

iiiLi iii P1 q i -"F f fi l j it cement UUMPAJWL concern: it known. that i,

(tZZ whom iii 'E'R, a citizen of United iiitetegres 3, it AAFfIiD, in the county of Essex and Stet of Kissese cassette, invented certs-in new a mi improvements in @scillsting Mo of which the iciiowing is specificstionl This invention reiotes to n1otor-isns,end

more portion priy to that class in whieh the bl duo g meniher'is eutometlesii y" es:

means which. do not interfere with the his-st of air producer which not easily disarranged or gotten out-oi order. 1

Lin cerrying'out my invention .i mount upon a rock-ehsft journeled in s'support edsptecl to turn freeiy about it vertical; axis a motor and. rotary fan with their axis of rotetion per aliel thereto and counterbeienee the motor and fan so that thecenter of gravity is but e oei to the other toproduce s corresfondin short iiistznice shove the longitudinal rocksiieit, and In order to lim t the movement of the motor: and ten under'tiie force of gravity sway iron the vertical position stops arc pro-' vided upon the support in Zine with some projecting part of the motor, so'thst the norznsl position of the fan and its motor isto one side or the other of the {1X13 of the pivotal support, and when in operation the heck thrust the fan wiii produce a turning movement or the s stem about the ertical pivotoi axis. ii r to autoniuticeily sh iii/$133 position of the motor and ten from one side oi" the vertiosciilstion in the opposite direction t is rockshaft is provided with e crank-arm which 'engages one or the other of suitsblyplcoetl stops as the system approaches the end of each osciliation and causing the shaft and parts carried thereby to be partially rotated.

For a more complete understanding of the invention reference may be had to the following detailed description-end the correspondingdrawings forming it part of this specification, in Whi.ch-

Figure Itis a, perspective View of the rear f ASSAQHUSET specification of Letters itctent.

il'gipiieoticn filed ficnemesr 16,1993. Serial iris. 1.84.55 9

vice drawn to e reduced scale, showing to the trade es -oscil--' its onus extending horizontally Persist ci cles;

p a are Em ine end of an oscillating rnotor fen embodying my invention. Fig. 2 12 e senpien view of the pivotal support and suhhssewithf the;

stationery steps shown eonnected'thereto; and Fig. 3 is a rear end elevation of the dothe fan in one of its normal positions.

i mounted uponthe motor-Sheff, C, end-the guard ID may he of the usual construction and. eccordingly need not he described here detail. I

ASSIGNQR TU centrist CORPURATKQN or NEW rose.

1 se u s my '1, ieooi';

The motonfreme is provided upon its lower the ems of the pivoted support. To the lower end of the injection 1 a Wei in 3 is se'-' cured, which is of c size to nearly eounterbalw once the-Weight of the motor endpartscarried thereby, or so that the center of gravity of the systeln'of-these-rigidly-connected patts is 0111;? slightly above the axis of the shaft 2.

he pivoted supportingimme consists of two rigid arms send 5, bent up from o osite sides of a circular plate 6 prov; id at their upper ends w th bearings 7, iii" uhich the shaft .2 is 'journaied with the projection 1' anciweight 3 between the arms. The plate 6 is secured to it flat disk 8, pivotally mounted upon it suhbsse 9, consisting of a fiat disk having a concentric stub-shaft 18 extending from its upper surface, about which the disk 8 is journeled at its center, and between the adjacentsides of the disks 8 am Q is a series of ontifrictionimlls iLhelrl in place by odislv retainer 12, concentrically journsled .iipon the shaft 10.

The means for. limiting the eccentric movement of the motor A and arts carried thereto side of the vertical position consists of a U shaped yol e-piece 1.3, secured at its middle to one of the arms 5 of the pivotal support with into the path of travel of the projection'l and each provided with an adjustable set-screw, 14, ode ted'to engage and vary the extent of swing of IO the. projection 1 and parts connected there-- with and thereby vary the rate-of oscillation about the vertieslcxis, g a

he motor A, the rotary hisde'memhcr B, l

- peri hery of the base.

' themotor-s en the parts are in the position incliJ cated in Figs. 1 and 3, the back thrust due to the action of the rotating member upon the column of. air set in motion thereby exerts a turning movement to the left of the vertical axis tending to revolve the system in a counter-clockwise direction about the vertical axis, bringing in the course of its travel the arm 15 into engagement withthe right-hand stop 17, which upon further revolution of the system effects a rotationof the shaft.2 and t e parts carried thereby until the vertical position is passed, whereupon the action of gravity continues the turning movement upon shaft 2 until the projection 1 is arrested by engaging1 the opposite stop-screw 14, with aft'C 1n the position; as indicated in dotted lines, Fig. 3, to the right of the vertical axis, so that the back thrust exerts a tendency to revolve the system inla clockwise direction about the vertical axis until the position of the motor relative to the vertical axis is again shifted by the arm 15 engaging the left-hand stop 16.

It has been found inpractlce that with the.

parts carefully constructed and symmetric ally arranged there is a sluggishness about the shifting of the motor in one direction with respect to the vertical position and an acceleration in the op osite movement due to effect of the torque o the armature upon the motor frame. torque eflect, I provide upon one of the radial arms of the guard D a balancin weight .20, adapted to be moved toward an away from the axis of the motor and to be secured in ad' justed position by a binding-screw 21.

. I do not desire to restrict myself to the particular form of construction of parts herein described and shown for it is apparent that they may be changed and modified without departing from my invention.

What I claimas new, and desire to secure by Letters Patent of the U uitcd States, is

- l 1. The combination olapivotod support, a

In order to overcome. this rotary fan eccentrically mounted thereon, and means for automatically changing the eccentricity thereof.

2. The combination of a pivoted support, a rotary fan eccentrically mounted thereon, and means for periodically changingthe eccentricity thereof.

3. The combination of a pivoted support, a rotary fan eccentrical-ly mounted thereon, and means for shifting the position of the fan from side to side of the axis of the pivoted support.

4. The combination of a pivoted support, a rotary fan eccentrically mounted thereon with its axis in a plane at right angles to the axis of the pivoted support, and means for shifting the position of the axis of the fan from side to side of the axis of the pivoted support.

. 5. The combination of a pivotedsupport, a rock-shaftcarried thereby, a notary fan mounted upon said rock-shaft, and means to automatically rock said fan from side to side of the axis of the pivoted support.

6. The combination of a pivoted support, a rotary fan mounted thereon to oscillate about an axis parallel to its axis of rotation, and means to automatically rock said fan from side to side of the axis of the pivoted support.

7. The combfnation of a pivoted support, a rock-shaft journaled therein at ri ht angles to the axis of the support, a rotary fim mounted on said rock-shaft with its axis parallel thereto, and means for periodically rocking said fan from side to side of the axis of the pivoted support.

8. The combination of a pivoted support, a rock shaft journaled therein, a rotary fan counterbalanced thereon, oppositely-disposed stops for limiting the movement of said ,fan from the vertical, and means for rocking said fan from one stop to the other.

9. The combination of a pivoted support,

a countcrbalanccd motorfan :nvmgmgly mounted thereon about a transverse axis, an arm secured to said motor-fan, and stationary abutmcnts located in the path of travel of said arm and adapted to act thereon to rock the motor-fan from side to side of the pivoted support.

in witness n hcrcof l have hereunto set my hand this 7th day of lhu'ombtl', 1903.

RALPH l BARKER.

VVitnossc's: DUGAIJ) MoK. hlOKILLOl, Jouu A.MMANus.

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