US908736A - Oscillating electric fan. - Google Patents

Description

H. S. BROWN. OSOILLATING ELECTRIC PAN. APPLICATION mum n.5, 190s.

' Patented Jan. 5, 1909.

4 SHEETS-SHEET 1.

lvi l meaoeo b v kn um W hw 5 H. s. BROWN. OSGILLATING ELECTRIC FAN. APPLIUATION FILED JAR. 5, 1906.

908,736. 1 Ptented Jan. 5,1909.

4 SHEETS-SHEET 2.

al C 1 177 573 i '2 4 5 8 2 m o i J l APPLICATION FILED JAN.5, 1906.

Patented Jan. 5, 1909.

4 SHEETS-SHEET 3.

ZZZ- y- 72 H. S. BROWN. OSOILLATING ELECTRIC PAN. APPLICATION FILED JAN. 6, 190g.

Patented Jan. 5, 1909.

4 SHEETS-SHEET 4.

- HERBERT s. BROWN, OF- NEW YORK, N. Y.

' I no. 908,735.:

' Toqall whom it ma concern: t

' ';Be'it known that L'Hsntnnr S. BRO N,

M a citizen "of the United States, residing. in,

-- New Yorkcity, borough of Manhattan, New

- O SCILLATING ELECTRIC FAN.

York,.have invented certain new and useful Improvements in Oscillating Electric Fans,

- :of which the following is a specification. I My invention relates to improvements m T oscillating electric fans, and it has for its object to produce a structure wherein the-fan is capable of oscillating. automatically, 1n'

substantially any plane, without requiring j the use ofgears orof vanes or their equiva- J lents, employing a single pivot only, and

operative irrespective of an angle by which ts supporting or horizontal plane, being capable of support from beneath, from a side wall, or from the ceiling or other pendent positiom Thesaid. objects of my invention may be 'attained -bysmeans of thenovel detailspf improvement and combination of forces inherent in the structures that. will bemore elevation of a fan structure showing a modi p and as described inmy ending application;

fully hreinaftersetforth and then pointed out in the claims. p

' Referenc'eis to behad to the accompanying drawings forming parthereof, wherein,

Figure- 1., is an'elevation of a fan structure embodying my improvements, Fig.2, is a detail view, looking from the'left in Fig. 1, of. the support for'thefanandits motor, Figs.

.3, 4, 5 arese'ctions, r s ectively on the lines 3, 3; 4, 4, and 5', 5 ofli ig 2,"F1g. 6, is a side fication in .details, Fi 7 is a side view,

' lookingfrom the left in ig. '6, of the support for the fan and its motor, Figs. 8,9, and 10 are sections, respectively, on the lines, S, 8; 9,- 9,-and'10, 10 inFig. 7, Fig. 11, is a plan view, on a reduced scale, of Fig. 6,'illustrat ing acircuit for. the motor, Fig. 12, is a side elevation of a fan adapted for the utilization of gravity, and showing modified means'for controlling the circuit "of the motor, Fig. 13, is a rear view thereof, Figs. 14, 15 and 16 are diagrammatic views showingdifierent forms of pivotal supports forthe fan and its motor, Figs. 17, 18, and 19, are diagrammatic views illustratingsome of the different positions in which myim roveinents may be operatively supported. ig. 20 is a detail view illustrating anjofi -center support for the fan motor. I a

The ,jvarious'gjforce and combinations of forces utilized in,;myinvention are: (1)lever- A Specification of Letters Patent. Application filed-January 5, 1906. Serial No; 294,696.

by the fan, operative whenever. the axis'of ase mayvaryfrom the level Patented a, 1909.

' age action of the fan 'bladesu on the air,- produced when the planepf the lades is set at an angle to the axis of the pivot of oseilla- 1 tion, causing onebladef always -to,be, at a '50 greater distance or leveragefrom the pivotal axis than the blade opposite, as is'familiar in. theart as, for instan'ce,-as shown in the patent to Wood, No. 697,697, of April 15,- 1902,

which shows a revolving fan structure-L .(2)

back pressureof the column 'ofair propelled the fan shaft is off center o'r-to one side-ofthe pivot of oscillation, 'asfamiliar in the regy 7Q arts are cent development of the art. scopic action of the rotating partsof the fan structure, present whenever said laced at an angle tothe horizonta as more ully'describedin my Patent No; 809,356,

' dated Jan. 9, 1906. "In addition to these three primary forces .three resultant or seesional reaction of a'twisted cord or strandsof elastic material, tending 'to return astructure aifixed to'one end of said materialto a centralpoint of equilibrium of the elasticfor torsional materiahwheneverthe structure rotated to onejs'ide ortheiother of this center, j as described fully in.- my above mentioned patent. (b) the'reaction' of one-or'more coiled, spiral, ,or'other springs to movement of theffan structure to. either side of a central point of equilibrium, substantially 'e uiva ent to the torsional reaction described a ove',"

for Letters Patent filed ugust 10, 1905, Se -f' rial No. 273,550. 1 (0) the action of gravit upon an unbalanced pivoted structure, ten

mg always to move the-center of-gravity of the system to the lowest possible pomt, as de scribed in my ending application for LettersPatent files ber 113,216,. and in aforesaid application, Serial No. 273,550.

Experiment appears to show. that any one ioo forces above mentioned, substantially unai ed, may cause oscillation of the three prime of a fan, provided'automati'c means are used wherebysaid force is madeto act alternately.

poslte directions, such means, as I am in o familiar withthe art, consisting mostly of structures whereby surplus energy ofthe ac- .tuating force maybe stored u and at suitable points be dischargedagamst a fixed or elast1c stop with sufiiei ent Impetus toshift ondary forces, 'develo ed by the action of the.

primary forces, may eutilized: (a) the tor-j- June 26, 1902',Seri'al. Numj patent operates which variations, ail.

a primary force (or combination offorces) is combined with a secondary force (or combination of forces); to produce oscillation without necessary reversal 1n direction of the primary force, the essential feature here againbeing ameans whereby the, point of rest of the opposing forces is automatically varied.

The suspending device shown in my said by means of intermittent vanations in the current supplied to the motor, eating the back pressure of the columnoffpropelled air, vary the angle posed I y the reaction of one or more s of inclination o ttejfan structurewith respect to tnehorinontal and to the supporting cord or pivot, thus .varying the intensity of both the leverage and, the gyrosco ic action. These latter'tilen directly act to disturb the point of equilibrium between themselves and the torsional reaction of the supporting structure, and thus maintain oscillation.

In the preferred form of my present invention the'dependence upon back pressure is omitted, it having been found that variation in any single one of the three primary forces, due to variations in the current supplied to the motor, is sufiicient tomaintain oscillation he forces utilized are properly proportioh In 1 he preferred form of --my structure (Figs. 1 to 11) I have useda combination of levera e. action and gyroscopic action, op

prings.

have found that this combination affords the nearest approach to universal ap licability, with aminimum of adjustment fiir operation in different planes.

Proceeding now to describe the structures and the operation of my present improvements, I refer to the drawings, Figs. 1 to 20 inclusive, in which the numeral -1 indicates a fan, shown of the'propeller type, carried by a shaft 2 of the electricmotorB, which parts may be of any well a pivotal sup ort whereby said cased with 7 ing and fan maylo'sci ate. In theexampl'e illustrated I have shown the support 4 gen- Referring now to to 5, I have illusknown or suitable con-. struction. The casing of motor 3 IS COIIIIGCt vthe resistance 1 as trated means for. normally holding the fan and its motor in a position of rest while permitting oscillation thereof, arranged as follows z-In order to secure a leverage action of the fan blades, the axis of the fan shaft 2 is inclined slightly from the perpendicular to the axis of the supporting pivot 5; and the fan 1 and motor 3 are then symmetrically balanced with respect to the pivot 5. A flat spiral spring 7 freely surrounds post 4 and is attached, as at 7, to said post and at its other end said s ring is connected with a stationary part, as to a projection 8 connected with post 4*, in the example illustrated said projection being carried by a sleeve 9 mounted upon post 4* and frictionall y held thereon, but so that said sleevemay be adjusted angularly by hand. The spring 7 is in circuit with a line wire a, and with a terminal of the motor 3,. as by wire 0; The other terminal of the motor is connected by a wire (1 with the line wire e and in the example illustrated, I provide a spring 11 connected with wired and loosel surrounding post 4 and connected at oneenrl with said post, as at 11, the wire (1 being connected with spring 11, and at the other end said spring is connected with a projection 12 that 18 connected with the part 4 as with the sleeve 9. The projection 12 is so situated that spring 7 may freely uncoil. I

have shown the 8 ring 7 as provided with a contact finger 7 that engages acircular'contact 10 carried by sleeve 9 and less than a complete circle, wherebythecircuit of line wire a will be maintained closed during part of the oscillatoryfmovements of the fan and its motor, and whereby the direct circuit through wire a will be broken at or near one or both terminations of the desired oscillatory arc of the motor. For the urpose of reducing the strength or flow of tie current passing through the motor at oi near a termination of each oscillating movement thereof while still maintaining a flow of current.

provide a suitable resistance a: connected with line a and with spring 7, as by a wire I), so that when the circuit through a is broken by finger 7 b breaking circuit with contact 10, at or near a termination of the oscillatory movements of the motor, the circuit will be continued through the resistance 2: thereby reducing momentarily the flow of current 7 through the motor and causing a momentary reduction of speed of rotation of the fan. It will be understood, however, that if the resistance a: were not used and the finger 7 were permitted to break circuit completely with the line wires at or near a termination of the oscillating movements of, th power of the motor would be reduced in'much the same manner.

above stated so as not to completely break the circuit through the motor during operation. By adjusting or bending the contact 10 the point or points at 0 motor the M I prefer, however, to use;

which contacti'is was my be shifted at 'WIll, thus'regulating. the extent of-the oscil- ,1 latory movements.

xiThe-vspring .15

' Tjthe. fan and its motor normally'rest in a 4 v 7 and11-wind in opposite directions and are of such relative tension that .certain position of; equilibrium; the two springs for the purpose of reaction actin'g'sub--v stantially as onespring. When now the cu r-' 1 10.

rentis started through the motor-and the fan blades commence to revolve, the pivoted fan turn as it proceeds.

passing the slightadditional push Withthe hand during the first movement,'though this is not neces 'sary' when the fan is working in the particular-plane for. which it' has been ad usted,

reverse saidrnovement quickly were 1t not for moinentum -wh ch actmgjagainsti the serves to: overcome their force 'and' The -sp'ringsft7 and 11- now react, opposing movement upon pivot 5,,and would stop and sprin-lgs lengt 'enout the arcof oscrlfation.' Momentumj however, dies out asthe increasing tensio'n-ot the springs c'ausesxthe' oscillatorymovement to slowhup, and at some point the force of the sprmgs overcomes and reverses lating' back. and forth,- fin arcs tending to decrease until-finally the structure would come to rest' at the point, olf' nOrmaI equi-.

I librium., But by rea sori of variationsflin theare intermittently varied, thus the other operative factors,- andthe structure begins to 'return toward a point. at p all the forces are balanced or in equilibrlum. But by reason ofmo'mentum,'whichincreases- 'as 'thestructure 'i'ravels back toward the point of equilibrium, thisfpoint is passed and the structure moves'to the other side of the ,arc of oscillation, momentum now opposing the combined forces of leverage andvgyro scopicv actionsand the springs until these forces overbalance it and cooperating return the; structure to and again ast the point of normal equilibrium, the an thus oscilcurrent supplied to the motor, or to parts of it,- as existing in all commercial circuits; oras caused by irregular commutation the" fan'motor or automaticallyproduc'ed connection with the scillat'ory movements of the fan structure, the leverage and gyrothe' fan sturbing the point of'equilibrium of the operative forces and causing it to shift from time to scopic forces utilized in oscillating; 1

time. I find that these variations and con-.

sequent shiftings of'the' point of normal equilibrium are sufficient, even without being automatically augmented'in connection with the oscillatory movements of the fan,

operation,

to overcome frietionand'maintainoscillation ofthe fan structure: '1

'In'thls explanation for clearness' I- havepurgosel'yomitted reference to the function '70 oft e resistance as, Fi 1, and explained the operationas though t V is resistanoe'wereexi actly equal to that through the main circuit a, .or as though there were no automatic cutouti of the main circuit; as; shown in Figs.

- '1 to Y 311. is utilizedinthe; present inodificat onsflof the broad featuresof my invention merely as ag'brake or-cheekfto F rventQexg fcutout in thecircuit, as in-r g ia This -Z5 cessive oscillationor racing ofit evstructure about the. pivot 5 when bygchanceexcessive variations in. the currents sup lied to" the motor shift-the normal center 0 equilibrium:

more than is 1 required to pfiset'fnctiongand pose I haveth'e. main circuit {broken pref? forces impel the structure, the break 'on the tend to build; up jlonger --c:an"d l; more rapid oscillationsthan are desired,- For thispurs5 erably on the sidetoward-which'the primary 'opposite side being jadjusted ata point rarely y Ereached. By slight modificationsin this cir-' .p cuit interruptingdevicel findit possible to use this. device "to assist in the-intermittent variatioln's of current-upon whichlI depend to maintain oscillation; but ias such variationsaresuflic entj for the des red purpose withoutaut'omaticassistance, I have not shown such-"modifications in the present structure, theipresent function of the cut out or interrupter jbein merely. cooperative with and regulativeof t e main actuating forces as described above. 1

1 'When it is desired to'shift the'diietfiqn of g the air currents. fiowingffrom the fan the sleeve-9 may "be turned around thep'a'rt 4.,

which will cause "the springs7 and 11 to shift with respect to base 6;.totl'1ereby alter thev position of the axis of thenfan', "instead of same ptrposeif desired.

springs 7 and 11 as in. convo1ute' form, substantially the same resultsfmay be accomplished by utiliz in a' cord 'or strands ofelastic material as iliis'trat'ed in my aforesa d To this our and to provide for includin the of oscillation of the fan structure-in, one di rection orboth, I provide in'this inodification the followingarrangement The Wire a connects with a contact a and the sprin'g7 is connected with a wire or spring '13 thatis sect red'at its other end to the sleeve 9, as by a sci ew 14, the contact, 13 beingnormally in engagement with contact. a. The contact 13 is connected with wire b, as by wire b eonshifting the baseG, though' it willbe'understood that the base 6 may be shifted for the, 'Wh le 1n Figs; '1, to'5i IT-have shown the Letters Patent No. 809,' f 56, or by utilizing r 'spi'ral springs 7 11", as'm F1gs. .6. to 11, the a spring 7 bemg'connected'withiwires a and b,

while the s ring 11 is connected with wire e.

1202 resistance a: in the circult at or near the imit fan oscillates will move said wlre out of ennected with screw 14 and with a screw 15 on sleeve 9 to which 'wire bis also connected.

I hen the fan structure rotates, as to the left in big. 11, and arrives near the limit of its movement in that direction, the tension of spring 7 will lift contact 13 out of engagement with contact a and thus break the direct circuit through line wire a and thereby include the resistance a: in the circuit, thereby reducing the potential of the current through the motor to cause a momentary reduction in s eed of rotation of fan 1. In order to regulate or adjust the time at which contact 13 will disconnect from contact a the contact 13 maybe ut under more or less tension, and thismay e done by attaching the wire 13 rigidly to screw 14, as by assing the wire 13 through a hole 14" in sai screw (Fig. 10), and then byturning said screw to the right or left; thus the spring 7 when the agement with contact a" sooner or later. lde from the form of the s rings and circtit interru ter 1 sed, the modification of my invention s own in 1 igs. 6 to His substantially identical with, and operates in the same manner as, the structure shown in lsigs. 1 to 5. i in the form of my invention illustrated in Figs. 12 and 13 I have shown ho'wlgravity may be utilized as a-reac'ting force instead of a spring or springs shown in ligs. l to 12. In order to conduct the current supplying the motor past the junction of the fixed and moving arts of the structure, I have shown contact gers 7, 11, connected with suport4, as bythe sleeve 9 thereon, which] ngers engage annular contacts 15, 16 carrie by post 4, the fingers 7, 11 sliding on l the contacts 15, 16 during oscillation of the i fan structure. In this form of the invention, as in the forms shown in ligs. 1 to 11, leverage and g roscopic actionsare utilized as the primary cross in the oscillation of the fan, the plane of the fanblades being inclined to the axis of the support 4, and the axis of the support 4 being inclined with respect to the horizontal. 1

In order to regulate and control the ex tent of gravitational reaction at will, the pivoted structure is made adjustable transversely with res ect to the axis of support 4, and to this en I have shown a screw 17 meshing in a threaded hole-insupport 4 and extending transversely thereof and connected with the casing of fan 3, by a yoke or frame 18 attached to said casing, and in which yokejor frame the screw 17 is journaled. Guides 18" on said frame, bearing against sup 'ort 4, or entering recesses therein, serve to alance and center the fan structure upon the su port. By this means the fan structure can )9 adjusted more or less to one de of the of support 4. to thereby induce a more or less forcible gravitational reaction of the fan structure during oscillation. The base 6 may be adjusted to adesired angle with res ect to the horizontal to thereby deflect the an blades or toaflect the gravitational reaction as by 19 connected with said base.

Figs. 14, 15 and 16 illustrate diagrammatically different ways of supporting the fan structure for the purpose of utilizing the forces before mentioned or combinations of forces. In each of the said structuresthe operation is substantially identical with that described in my Patent N 0. 809,356, referred to above. In Fig. 14 the fan casing is mounted upon the pivot 4 and has a depending .wei ht portion 3, in the so'clret3 of which t e su port 4 passes, the'tende'ncy of which is to a ways return the, fan structure to a position of equilibrium, the depending weight 3 thus acting against and varying the forces employed in operating the fan structure for causing oscillation of the latter. In Fig. 15 the fan casing is supported from ried by the .pivotal'support' 4, said spring permitting the fan structure to swing bodily rearwardly under the varying ressure of the column of air flowing from t e fan blades,

means of screws above b means of a curved s ri 3 carthus varying the movement of the fan structure'about the supporting device as a pivot.

In Fig. 16 the fan structure is supportedin the manner of a universal joint by means of a yoke 20 carried by pivot-Sand having a horizontally disposed shaft 21 pivoted to the yoke above the motor casin to which shaft saidzcasing is attached. n this case the back pressure of the air upon the rotating fan blades causes the fan structure to swing rearwardly on the axis of shaft 21, thereby changing the leverage action of the blades upon the surrounding air and causing the fan structure to oscillate more or less rapidly according to such leverage action.

Figs. 11 18, and 19 illustrate diagrammatically means for supporting the fan structure in such a manner that adjustment can be made to direct the air current flowing from the fan at different angles to the horizontal. In'this modification the sustaining post 4 for the motor is shown connected with a base 6 by a clamp joint 6, which may be in the form of a screw 6 provided with a nut fi c'onnecting the part 4 with base 6 by a lug 6% By this means when the base is held substantially horizontally min Fig. 17 the fan structure may be moved to one side of the vertical and held "in, position by the screw and nut; if the base 6 be attached to a wall, as in Fig. 18, the fan structure may also be inclined to the vertical as desired and held in such position by the screw and nut; and if the base be attached to a ceiling or over-head support, as in Fig. 19, the fan thereof. on the opposite sideof 1 1n- Figs} 17, 1 8,19 and 20the a azement;

f tially the samew'ay.

Having-now described verticaland held in such position. In either tions in the flow of. current through the. fan

case the fan structure maybe adjusted so.

{that the'axis of. oscillation. of the fan struc- 1 5 ture will beverticalgif desired.

3 The balancing of the pivoted structure symmetrically with res ect to the pivot of oscillat on,- as shown in igs. l to 1'1 and 17 to 20, makes the device substantially intion equally well in any plane; except that the g'yroscopic action increases in proportion ast e I an anglev of',from either thevertical or 15 if disturbingforce ondevicesi not specially 'ad-: qustedfor operation at excessive angle'sfrom dependent of gravity and capable of, operaaxis of the rotating parts approaches the horizontal, and to some extent acts as a the horizontal.' I find that an inclination of 1 the fan axis of ten to fifteen degrees from the horizontal in either direction does 'not ma- -terial'ly-disturb the action ofa fan adjusted to' wo'rk near 'thehoi 'izor ital,.witli' a very slight-Bgyroscopic'comdponent.

I g.v 20, 'instea 6f sustaining the fan structurein such manner as to-utiliz'e levere'of the fan blades upon thesurrounding air, I have shown an arrangement whereb' {the-fanstructure isrpivotally'sup .rted'o center wherein the connection oft eisupport 4 with theiniotor casing is at oneside off-a; plane passing .vertical-ly==through the axis of.

'the fan blades ormother words the line 8 It Pa through. the a s of sup ort 4 is at Dno side of theaxis-of th fan 8 aft it t.

'35 111' W "to balance the struct e ith r -l li its, counterweight on thecas-iiig of the. motor.

assumed to be substantially similar, to those I 'shown. inFig's. 1 to 11 and operate'su-bstan Iclainiisi- 1L The combination, with an electric .mo- .topd -ivenjtan: havin fits axis. placed at an ,angle tothevertica gai'id arran ed to de- 1 liver a stream .Qf a'irin the general rection of defice'asfia-pivot, whereby variationsin the tain oscillation of the, fan;

2. The combination in a pivotal fan struc- Ienceeded by. the reaction caused by said I invention what ally said axis,'- ofa pivotal supporting device has neathfthe' fan' 'an'd connected therewith his; .;-ing -m'eans for producing reaction to the "movement of the, fan about the supporting current supplied to t e motor serve to mainmotor during its operation cause thefanto; oscillate.

may here also be inclined at an angle to the I mechanical-means, all arranged so that VBJI'lite- The combination in a pivotal fanstr'uc}.

ture of means'whereby gyroscopic action acts. to rotate thefanm one direction, mechanical .means connected-with-said structure and."

simultaneously rea'ctingto rotate it in thoi, opposite direction, and automat cmeans con tions in the flow of current through the fanv S h ng its operation cause .the fan. tg oscillate. a

' 4, The combination of an. electric inotordriven fan, means for pivotally sustaining said fan, and r neans for producing an oscilla- 'tory movement of the fan with automatic means connected with the fan andcontrolled by its oscillatory movement for Varying the its-operation. 1 5-. The combination of an oscillating else:

how of current through the fan motor during trio tan, with an automatic interrupter. for I thecurrent supplied to the fan motor con-- grolled by oscillatory movement of. the

The combination of an electric motordrivenfanhaving its axis placed at an angle 3 to the vertical and arranged to deliver a stream of. air .in the general direction of said axis,.\=means for. pivotally sustaining said fan,

nd; means for reducing an .oscillatoi'y ovement of the an with automatic means.

ilow of current through the fan motordurin'g its operation. i a 7 The comhinationfofan oscillating elecconnected. with the fan and controlled. by ithe os'cillationsof the fan for varying the trio motor-driven fan, .and means for pivotsustaining said fan, with means 'con-. trolled b vcurrent; t rou h the fan motor at or near-a termination o the oscillatory movement of the-fan.

the fan for altering the flow of 8. The' combination of van oscillating elecf tric' motor-driven fan and means for pivot ally sustaining said fan, means for alter ng the flow of current through the motor during its operation and means controlled by the fanfor reducing the otential of the current flowing throu h the an motor ator near a termination 0 its oscillatory movement.

9; The combination of" an electric motordriven'fan, means for pivotally sustaining. 1

sai d'fan, and means for producing an oscillatory movement of said fan, with means for connecting the fan motor with linewires,-

producing reaction to the movement of the ,fan about its'sustaining device, and means 1 associated with the fan and controlled by the oscillatory movement of the fan structure and'located in themotor circuit for causing variation in the flow of current to the motor ""during its operation.

11. The combination with an electric motor-driven fan, of means for pivotally sustaining said tan and motor, means effective through the motive power whereby the fan is turned upon its pivotal support, means for producing reaction to the movement of the tan about its sustaining device, and means operated with the fan and operativel y located at or near a termination of the oscillatory movement of the fanand located in the motor circuit and controlled by such movement of the fan for causing variations in the flow of current to the motor during its operation.

12. The combination with an electric motor-driven fan, of means for pivotally sustaining said fan and motor, means .efi'ective through the motive power whereby the fan is turned'up'on its pivotal support, means for producing reaction to the movement of the said fan about its sustaining device, means for connecting the motor with line wires, a resistance for the motor circuit, and means operated with the fan for throwing the re sistance into direct circuit with the motor at or near a termination of theoscillatory movement of the motor for varying the flow of current through the motor during its operation.

13. The combination with an electric motor-driven fan, of means for pivotally sustaining said fan and motor, means effective through the motive power whereby the fan is turned upon its pivotal support, means for reducing react-ion to the movement of the ian-aboutxits sustaining device, means for connecting the motor with line wires, a resistancecoiinec-ted with one line wire, and

means included in the motor circuit operated by and with the fan for breaking the normal circuit of the motor through the line wires and including said resistance in the circuit of the motor at or near a termination of the oscillatory movement of ,the fan for varying the fiow of current through the motor during its 0 oration.

14. The com ination of a fan and its motor, means for pivotally sustaining the same,

and means effective through the motive power whereby the fan is turned upon its pivotal support, with a spring connecting the motor with a stationary part for producing reaction to the oscillatory movement of the fan, and means operating with and controlled by the fan and included in the motor circuit for causing variation in the flow of current ghrough the motor during oscillation of the 15. The combination of a fan, its motor fan and in engagement with the first named contact and adapted to break engagement therewith during oscillatory movement. of the fan, and means for connecting the'other terminal of the motor with a line wire whereby the flow of current through the motor may be varied. c l

16. The combination ofa fan-and its motor, means for ivotally sustainin the same, and means e ective through the motive power whereby the fan is turned upon its pivotal support, witha lurality of springs connecting the motor wit a stationa part for producing reaction to the oscil atory movement of the fan, a contact connected with a line wire, and a'contact connected with one of said springs to make and break circuit with the first named contact whereby the flow of current through the motor may be varied.

17. The combination of a fan-and its motor, means for ivotally sustaining the same, and means e ective through the motive power whereby the fan is turned upon its pivotal support, with a plurality of springs connecting the motor with a stations. part for producing reaction to the oscil atory movement of the fan, a contact connected with a line wire, a contact connected with one of said springs to make and break circuit with the first named contact, and a resistance connected with the other of said springs and with a line wire, whereby when the circuit through said contacts is broken the resistance will be included in the circuit of the motor whereby the flow of current through the motor may be varied. v a

18. The combination of a fan, its motor and means for ivotally sustaining the same, and means e ective through the motive power whereby the fan is turned upon its pivotal support, with a spring connect ng the motor with a stationary part for producing reaction to the oscillatory mot "cent of the fan, a contact located concentrically with respect to the axis of oscillation of the fan structure, a contact connected vvith the fan structure and in engagement with the first flowv of current through the 19. The combination of a fan and motor, means for Eivotally'sustainingkthe same,

and, ineansle ective through t e] motive power-whereby the fan is turned upon its pivotal support with 'a spring connecting the motor with a stationary part-for produc-- ing reaction to theoscillatory'movementoi thefan', a contact located concentricall with respect to the axis. of oscillation oft 6 fan structure, a contact connected with the fan' structure and in engagement with the first "jo named contact, means to cause said contacts to break engagement during. the oscillatory movement of t e fan vstructure,and a resistance connected witha line wire controlled by said contacts, whereby when circuit is of the structure I I g HER-Bear's, BROWN.

' brokenthrough said contacts current will flow. .throu h the; resistance to the motor and v where y the fiowof currentthrough the motor will bevaried;

20; The c'ombination of a fan and its mow. 30

tor, with a pivoted 'p'ost connected with the motor, a member independent of the fan structure disposed concentrically. with respect to the ivot'al axis of said structure and adjustable a out-said axis, a sprm COH eCi'r,

ing said adjustable member with t e-moto'r, and means adapted to cooperate with sald spring in any position of the'adjustable memher to produce an oscillatory movement of the fan structure about 'its'pivotal axis, the

general direction of the. column of air flowing from the-fan being alteredby moving the" adjustable member around-the pivotal axis Witnesses: T; F, vBoumwn,

R. 'E. LIEBESMAN}.

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