US1081244A - Electric fan. - Google Patents

Description

fi LT G.. MARX v A.'

ELECTRIC PAE.

APPLICATON FILED Pai: me@ Dec. 9, ll-

LQSLQQL WITNESS/58'.'

G. C. MARX & A. F. BECKER.

ELBGTRIC FAN.

APPLICATION FILED FEB.23, 1910. 1,081,244 Patented Dec. 9, 1913.

2 SHEETSSHBT 2.

'INI/Emmi? TTRNEY MMM.

'UNITED 'STATES PA GUSTAVE C. MARX AND ADOLPH F. BECKER, OF ELIZABETH, NEW JERSEY, ASSIGNORS TO DIEHL MANUFACTURING COMPANY,

TENT OFFICE.

A CORPORATION lOF NEW JERSEY.

ELECTRIC FAN'.

in that classof electric fans having astationary base or standard upon which is pivotally mounted the motor-trame carrying the fan-blades and provided with means for communireiting a turning movement to the motor-frame upon its support. for varying thedirection ot'the air current produced thereby, and the invention has tor its pri mary object to provide a simple and compact train of speed-reducing mechanism for 1mparting an oscillatory movement of the moyt01'-l"ra-me, and which may be readily plied to or 'removed from the fan when desired.

In its most approved form the motorflame is constructed with a bearing boss for the rearward end of the armature-shaft upon the exterior ot which boss is fitted a hub formed in a gear fusing which carries a vertical crankshaft and a horizontal inf termcdiateshaft in transverse relation t-h'ereto. The lower end of the crank-shaft beneath the gearfase carries a crank-disk connected by means of a pitman with the supporting standard for the motor-trame, while upon the upper inner end of the crankshaft is iixed the hub ot' a crown-wheel whose. web is formed with a central cavity to accommodate 'the lower side of a worm-whirl fixed upon thefintermediate shaft and meshing with a worm upon the armature-shaft. a scc ondv gcarovheel being fixed upon the intermediate shaft and meshing with the crownwheel to "which it imparts a rotary motion derived from the armatlu'e-shaft through the described worm-gearing.

The standard is preferably formed in sections having their adjacent portions overlapped and united by means of a transverse clamp-screw, interposed Washers with annular series of corrugations being secured cach to its respective section, whereby the looseningmt' the clamp-screw permits the parts of fthcstandard to bc slightly sep- Specication of Letters Patent. Application tiled February 23, 1910.

Patented Dec. 9, 1913.' serial No. 545,291.

arated and shifted relatively to change the angle of the section carrying the motorframe and hence the direction of the air current induced by the fan.

In the accompanying drawings, Figure l is a side elevation of a desk fan embodying the present improvements, and showing the rearward armature-shaft bearing boss and the `gear case in section to expose the gearing; Fig. 2 is a detached sectional eleva-tion of the gear-case and its contents through the axis of the intermediate gear-shaft; and

Fig. 3 a view of the lower face of the crankdisk. Fig. 4 is an elevation upon an enlarged scale showing the sectional standard and its meansI of adjustment, and Fig. 5 a sectional elevation of the same. Fig. 6` is a. detached elevation of one of the sections of the standard, viewed at right angles to Fig. Fig. 7 is a face View and Fig. 8 an edge view partially in section representing \one ot the corrugated washers for the standard. Figs. 9 and 10 are sectional elevations of a diffe1-ent-torm of crank-member from that of the precedingY figures, and Fig. 11 a transverse section of the same.

The tan is constructed with the usual hase or standard 1, intermediate member 2 and socket-member 3 formed in the upper' end with an axial aperture entered by the cylindrical stud 4 depending from the body portion 5 of the motor-frame provided With the 'ti-ont and rear bearing caps 6 and "7.

with outwardly extending bosses 8 and 9 in which are journaled the opposite end portions of the armature-shaft, l0 carrying upon its forward end y the fan-blades ll. `The rearward bearing boss 9 is ,provided with a bushingl 1Q secured loosely in position by the locking screw 13 and affording the bearing tor the rearward end of the armatureshaft.

Upon the cylindrical exterior of the beuring boss 9 is fitted a hub lformed in the body l5 of the gear-case which is open at the, top rearward of the,l hub 14 and provided with a removable cover 16 secured in place by means of the screws 17. The gearcaseis formed with a depending bearing boss 18 in which is journaled ythe vertical crank-shaft 19 whose axis is in intersecting relation with that. of the armatiu'e-shaft. Upon the lower end ot' the shattl) is fixed by meunaot the transverse pin 20 the hub 2l of 'a cranki the throw of the crank-pin screw-stud orpin 23 em- As shown in 'the drawings, the base secplate 22 carrying a raced by one end of a link 24 whose oppotion 1 is formed with an axial a erture ensite end embraces a stud 25 ltapped into a tered by a dependin stud 2t o the intel mediate member 2 o the 4standard which is secured -in position by means of 37 with its head countersunk in the seme. The intermediate seetion2 of the standard is formed with an u lateral lug 26 upon the fixed soeketmember or section 3 of the standard.

Upon the upper end of the shaft 19 is ixed by means of the transverse pin 27 the hub 28 of a crown-wheel with toothed rim 29 and dished web 3() atl'ording a gear cavity or disk 38 provi ed with a transverse in theY upper face of the crown-wheel emthreaded socket 39 entered by the threaded braced by the series of bevel-gearsteeth 29x end portion of a elamlrscrew 40 'provid ofthe rim. with the head 41 having wings 42.0.1111 The gear-case is provided in its opposite entering a transverse aperture in the de walLs with alined threaded apertures in pending wing or dis 4.3 similar to the which are introduced the soeketedthr'emled disk 38 upon the Boeket-member 3 of the standard. Each of the disks 38 and 453 il provided with a series of transverse apertures 44, as represented in Fig. 6, to receive the bodies ot pins 45 whose outer ends enter similarly arranged apertures 46 in the washers 47 which are formed with central perfor-ations 48 and with annular series of'corrugations'49 at their peripheries, as re resented in'Fifvs. 7 and 8. One of the was ers t7 is applic( to the flat face of each of the disks 3S and 43, and secured thereon by riveting or upsetting 4,5, as rc )resented in F ig. 5.

As will be readily seen, when the clampserew 4t) `is tnrnedto-draw the parts 38 and 43 together, the corrugations of their rcspeetive washers 47 interlock and serve to insure against the shifting lof the standardseetion it upon the section 2, `but by retracting the clamp-screw 40 slightly, the arts 98 and 43 may he separated sutiieiently to enable the corrugations of their respective washers 47 to pass one another, an the members 2 and 3 may thus be shifted into ditl'ercnt angular relations measured by undtiplcs of the pitch of the corrugations 49, and thus their extent of adjustment lnay he determined within a very lt'ew degrees, while they may he as securely Alocked in our. as in another relative adjustment and with a wry little turning;r ol' thc clamp-screw 4o.

ln the uioditiration represented in Figs. t), l() and Il, the lower ond ot tlncrankshaft it) has loosely fitted thereon a collar it) forint-d in its upper rnd willi an oil rup or rarity 5| and havinglalow tln` saine a cross-liar 52 with a sorkrt i closed at out'. rnd and extending lengthwise thereot` and intorsortod by the enlarged lower ond of tho l.shalt i9, which is lornwd with a .st-ries otl diainrlrirall)7 arranged notches ifl. The rrorseliar fr: is provided iny its lower .sidiwith a slot) 57 t-onununiratin;r with tlu mrkrt 12. naar its open `ond` which is entered h 'r tho inner extremities ofthe bearing plugs 31 in which are journaled the opposite ends of the intermediate gear-shaft 32 disposed in transverse .relation to both the armatureshatt 10 and the crankshaft 19. Fixed upon the iirtermediate shaft 32 near one end is the bevel pinion 33 meshing with the crown-wheel teeth 29", and arranged centrally of the gear-case is the Worm-wheel 34 which is' pinned upon the shaft 32 and meshes with the worm 35 fixed upon the rearward end o'l'i the armature-shaft 10. As will be obf served, the cavity in the body of the crowir wheel affords ample clearance space for thel lower side of the wormwheel 34, while permitting the rim 29 of the crow`n-wheel to be extended into sutliciently close Vrelation with the transverse shaft 32 to establish operative relation with a pinion thereon ot a size necessary to transmit thereto rotary motion of the requisite speed for imparting:r a slow oscillatory motion to the motor-frame upon its pivotal. Stud It. l

1n order to vary the amplitude ot oscillation of the motor-frame, the crank-disk 22` is provided as shown in Fig. 3, with several apertures 22x at different distances from its center to receivey the stud-pin 21:3, whereby 23 is changed. To maintain the motonframe stationary in ease a Steady air current is desired in a given direction, the bottom of the shaft 1t) is formed with aI threaded aperture l9*, as also represented in liig. 3, into which the stud-screw 2? lnay be serewunl, whereby the link connection between the standard and the crankshaft will remain nuiforin.

As represented in dotted lines in Fig. the pivotal stud t olz tho uiotord'ramc is necked at; A1"', and the necked portion is rntored by4 a screw liti lapped into the .sorkob .section i3 for locking the inotor-l'rauic rrvoluhly upon ita supportini;r Istandard', but it is evident that by cniploynwnt otf a scr-ow Sti oi' sullicient length the latter may he cnn played to elauip the sind it against. turniinr.v and tho oscillating` mechanism, with. thtl goal-fasti by which it is carried, may he ronrlrcd aud the lanernployed in the ordinary niannel'.

nuto? w|thin tho socket. and haring!l sur rounding` its outer portion a birthing 53 adapted to ho embraced hy ono ond 'd' thu` link i211. "lho roll-.ir 5t) is Secured iu position wardly projecting wingV the ends of the pins upon the enlarged lower rnd ol lh;A shalt lJ' instaan h means .of a Washer 59 iny ractice riveted llt o enabled to upon the latter. The normally closed inner end of the socket 53 has an axial aperture through which. passes the coupling pin provided upon its outer extremity Yivith a knurled head 61 ixed thereon and provided 'with a transverse rib 62 adapted toenter a similarly arranged groove 63 in the adjacent end of the cross-ba r 52. The inner end of the pin GO is ttedto and adapted to enter the apertures or notches 544 of the shaft 19, and such pin is pressed tov/ard the latter by means of a spring G4 interposed between the closed inner end of the socket and a thrust-collar 65 fixed' upon the pin ('30 near its inner end. By retracting the pin 6() to discngagc its point from one `of the apertures 54; of the shaft i9, and turning the pin so that the transverse rib or tongue G2 is out of register with the groove (i3 of the cross-har 52, the point of the pin is maintained sinliciently retracted to enable the shaft to turn without imparting a correspondiiig movement to the cross-bar and consequently to the crank-pin 56 for oscillating the fan-motor, but hy turning the.

lmnrlcd head (Si of the pin from inoperative position represented in Fig. ll to operative position represented in Fig. l0, the pin is resume operative relation with the apertured4 lower end of the crank-shaft 1f) rin/ler the action of its spring G4. llVhile a single aperture 5d Wouldbe suficientto insure the coupling of the collar 50 and crosshar eL/ to the shaft 19 under the action of this spring (3l, the provision of a series of sin-h apertures insures the more prompt acion of the coupling pin GO under the action of its spring.

The employmen of a detachable gear-case .containing` the driven train of speei'l-reducin;` mechanism a feature of the present imprint-nient oi considerable importance, as it uol only enables the fan-oscillating mechanism to he applied and removed at will, hui; enables the fan-motor and its casing to he ennstrucled as usual regardless of Whether or not the oscillating feature is to be enihodi'ed in the struct-ure. ln practice the `gear-case huh is secured in position upon the boss t) ofthe motor-frame by means of a setserciv, hulY anyusual or suitable means may lie/provided for such purpose. Vhile the gear-ease may he used or not, as conditions may require, when applied to the motor- 'li'ame il.. const il mrs a removable part of the saine :and l'ornis a rigid part of the frameinferno-.diete and crank-shafts. As the hul i-'l ot ihr near-rase serves to accurately locato the intermediate sha'll. 3:2 with relation lo the arinature-shaft 10, and as the crank'- slmtt lf) with the' concave-wchhed crownivheel carried thereby has ils axis in interseifling relation with that of the shaft l0 a suitable boss With the certainty that thev driving and driven members of the train of speed-reducing gearing will be disposed in the proper relation for eliicient ,cooperation While the form of the crank-disk represented in Fig. 3 is the simpler, it will be found preferable in many cases to employ a carrier loosely mounted upon the lower end of the crank-shaft and provided with a coupling pin for establishing and interrupting operative connection between the crankshaft and the standard, as represented in Figs. l0 and l1, whereby the fan may be instantly converted from the oscillating variety to one in which the direction of the induced air current remains constant. In practice, the gear-case l5 serves not only to inclose the gearing and excludedust and dirt therefrom, but to hold grease, which is Vcommonly of a more or less plastic consistency, in -ivhich the lower portion of the mechanism is submerged. As the crownwheel 29 and Worm-Wheel 34 partially embraced thereby have diiferent planes of rotation, the grease iscontinually stirred, so that the worm-Wheel is not permitted to cut for itself a path in the grease and thereafter operatein conjunction With the Worm 35 without carrying the necessary lubricant t0 insure smooth running of such interengaging parts.

Having thus set forth the nature of the invention, what We claim herein is p l. In an electric fan, having a shaft, a motor, a motor casing provided with bear-A ings for rotatably supporting said. shaft at both ends, and a standard on which the m0- tor casing is pivotally mounted, a fan-oscillating unit, including a gear-case having means for removably attaching it to the motor casing, a train of gearing therein, means for scparably connecting said train ofv gearing with the fan shaft, and means for separahly connecting said train of gearing with the standard, ivherely said fan-oscila lating unit is adapted to be detached from the motor casing without affecting the oper: ativencss of the fan independently of the hin-oscillating unit.

Q. .Mi electric fan, having a shaft, a motor, and a motor casing in-which said shaft is supported at both ends, and a standard on which the motor casingr is pivotally mounti ed, con'ibined with a Fan-oscillating mechanism, eoinprising essentially a gear-oase provided with means for attaching it to and removing it from the motor casing without affecting the` support of the fan-shaft, and a. train of gearing connected with the standard and adapted to be operatively connected with the fan-shaft.

3. ln an electric fan, in combination, a

crank-shaft and having its teeth surrounding said worm-wheel and in mesh with sai pinion.

5. In an electric fan, in combination, a motor-frame, a standard upon which said motor-frame is pivotally supported, a motor comprising an armature-sha having a worm thereon and journaled in said motorframe, a crank-shaft supported by the m0- tor-,frame upon an axis in transverse relation with that of the armature-shaft, an operative connection between said crankshaft and the standard, an intermediate shaft between said armatureand crankshafts and mounted upon the motor-frame in ftransverse relation to both of said shafts, a worm-wheel mounted upon said interme tliate shaft and meshing with the worm on thearmature-shaft, a crownwheel having a hub Iixed u on the crank-shaft, a toothed rim disposed adjacent to the intermediate shaft and surrounding said worm-Wheel, and a concaved connecting web into which said worm-wheel extends, a pinion mounted upon the intermediate shaft and meshing with said crown-wheel, and a easing closed at the bottom and surrounding sai worinwheel, crown-wheel and its operating pinion and adapted to hohl a supply of lubricant in which the latter operate.

In testimon) whereof, we have signed our names to this specification, in the presence ot' two subscribing witnesses.

GUSTAVE ADOLPH F.

motor-frame provided with a. projecting bearing oss, a standard upon which said motor-frame is pivotally'supported, a motor comprising an armature-shaft journaledin said bearing boss, a gear-case adapted to be removably fitted to and secured upon said hearing boss, s eed-reducing gearing mounted within sai' gear-case and adapted to be operatively connected with the armatureshaft, and an operative connection between said speed reducinv gearin and the supporting standard w'liereby tile motor-frame is oscillated u on the standard, the said gear-ease and its contained gearing being adapted to be removed from the mot-orframe without interfering with the operation of the motor.

4, In an electric `ian, in combination, a motor-frame, a standard upon which sai motor-frame is pivotally sup iorted, a motor comprising an armature-sha t -ournaled in saidmotor-frame, a crank-shait supported by the motorframe upon an axis 1n intersecting relation with that of the armature shaft, an operative connection between said crank-shaft and. the standard, an intermediate shaft between said armaturean crank-shafts and mounted upon the mot-orframe in transverse relation to-both of said shaftsl and in axially intersecting relation with said crank-shaft, and a train of speedreducing gearing connecting said intermediate shait with the armature-` and crankshaft-s and comprising a worm 0n the armature-shaft, a worm-wheel on the intermediate shaft meshing with said worm and a iiuion also mounted upon the intermediate shaft and spat-ed from Said worm-wheel,

and a coneaved crown-wheel fixed upon the C. MARX;

BECKER.

Witnesses:

llnxuv J. Minnen, llenar A.. KoRNEMANN.

Images