US821020A - Magnetic clutch. - Google Patents

Description

PATENTED MAY 22, 1906.

H. H. BUTLER.

MAGNETIC CLUTCH.

PPIIATION FILED JAB. 18, 1902.

z sHBBTBsHEBT 1.

No. 821,020. PATENT@ MAY 22, 190e.

H. H. CUTLER. V MAGNETIC CLUTCH.

APPLICATION FILED JAHJB, 1902.

2 SHEBTS-SHEET 2.

UNITED STATES .PATENT OFFICE.

HENRY H. (QUTLER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE .ARNOLD MAGNETIC CLUTCH COMPANY, OF MILWAUKEE, WIS- OONSIN, A CORPORATION OF WSOONSIN.

MAGNETIC CLUTCH.

Specification of Letters Patent. Patented Maly 22, 1906.

Apulia-ation filed January 18, 1902. Serial No. 90.29B.

lTo :1.715 whom it may concern.-

Be it known that i', HENRY H. CUTLER, e citizen of the United States, residin at Milwaukee, in the county of Milwau ee siid State of Wisconsin, have invented o. certain new and useful Improvement in Magnetic Clutches, of which the following is e full, eiser, concise, and exact description, reference being had to the accompanying drew? in s, forming e part of this speeicetien.

y invention relates generally to in agnetic clutches, and more particularly to double clutches or clutches designed to drive e, movchie element at different speeds or in different directions or et dierent speeds and directions. Such devices are of use in various classes of machinery, among which may be mentioned metellaners, inV which it is desired to drive the hed of the machine in one direction et slow speed and in the reverse direction at a greater speed. In prior devices employing magnetic eiiitches for this lsind kindred purposes trouble is experienced in quiekiy causing the clutch to release or let go the magnetic member, owing to the residual magnetism, and in case of a reversing-clutch, as above mentioned, whore one clutching member is intended to release and the other to immediately clutch and rotate the driven part in the opposite direction, thc shaft tends to lock and the parts ere thus suhjected toiun due strain.

My invention `has for one of its objects the provision of means whereby a. sharp and heevjfr blow is (.lelivei'ed to the sticking errns.- ture when it is desired to free the sinne from the magnet-,poles and whereby in the double face or reversing type the said blow is delivered before the reversing clutch is applied'.

To'these ends and suoli others as may here inefter appear the invcn tion comprises in thel preferred construction a rotatebie or driven member adepted to communicate motion to the desired part, es a plenor-beiLthe op osite faces of said member having clienne s formed therein in which are located thc. magnet-coils. Suitable armature-disks coniprising the driving ports are adapted to cooperate with said magnet-faces and ere driven et desired speeds and in opposite'iimotions, whereby when one disk is attracted to the fece of the said member the etter is rotated in one direction sind when tho other is attracted thcret(` it is driven in the reverse direction. In order to prevent one disk from coming into Contact with the seid member before the opposite disk exigence therewith, even thou h the one shouid cng thereto, e Vplurality o ins are passed through the said member and) ere slightly louV er then the thickness of the seine. A slight play or lost motion is also permitted between the armetures and pins'.v When, therefore, the our rent is cut ofi' from one coil and thrown onto the other, the armature of the latter is suddenly attracted end owing to the said play or lost motion acquires considerable inoinen tum before it strikes the Said pins, whereby e sharp end heavy lilow is delivered to the `opposite armature, thus causing it to be freed from the seid member` The length vof the pins is such that but one disk can be in contact with the seid member at s. time, wherehy ell danger from the sticking armature is prevented. The relation of the attracting end attracted members may be reversed and the magnets located in the driving parts instead of in the driven part, but the principle would romain the seine.

In the accom ienying drawings, Fi ure l is a. pien view o the invention es app ied to n reversing-ciu tch. Fig. 2 is e sectional view on the line 2 2, Fig, l looking in the direction of the arrows. Fig. 3 is a. sectional view on the line 3 3, Fig. 2, thc circuit arrangement being also shown. Fig. 4 is a view of e modi lied arrangement of' clutch and gearing as attached to plencrs; and Fig, 5 is en end view el.' the gearing.

Like reference characters designate like 'perts throughout. I

in Fig. 1 is shown the motor 2, e large pinion '3 upon. one ond of its shaft meshing with n gear 4, mounted upon mid ndeted to rotete the shaft 5, supported in eeriiigs 6, which hearings in case the device is used to eperatc a pliincr may he mounted directly upon the immo of thc planner. The motor is provided with siiitelile supporting lugs or feet '7 and may be ofr'eny desired type. U on the other end of the motor-shaft e snm ler pinion 8 is cerri'cd, which meshes )with en intermediate geni" il, supported in suitable bearings 1() und in turn meshin with e gear Il of s eciel typo Kridingr loosey upon the seid jslieft 5. This gem', es shown in Figs. 2 and x are connected by suoli planer in its movement. 5o

g5-a pulley adapted to 1o ot said bolts and having a slight reciprocating motion thereon..

The. driven member 17 has annular channels 18 formed in its opposite races, in which the magnet-coils 1t) are carried. These coils suitable wires 2t) und 21 with the collector- rings 22, 23, and 24, mounted upon the said member and insulated therefrom by the insulating bars or strips 25. Suitable brushes 26, 27, and 28, carried by 2o the suitable stationary support 29, are adapted to bear upon the rin s 22, '23, and 24 to make electrical contact t erewith. The said brushes are connected with the conductors 30, 31, and 32 ol' the electric circuit, a switch, 33, being provided to Shift the circuit from the conductor to the conductor 82. This Iswitch niay be conveniently arranged to be automatically shifted by the' bed ot" the The driving memier carries the ear-wheel 35, which is adapted to mesh wit the rack-gear carried upon the bed of the planer, although it will be understood that it may intermesh with other gearing or that it maybe made i n the form of communicate motion with the driven parts by means of' belts or other connecting devices. A suitable bearing-sleeve 36 is provided for said driven member and'provision is made at 37 and 38 4o for thoroughly oiling the said bearing.

At the side of the driven men'iber on which the weer 3.5 is located an armature-disk 39, simi ar to the opposite dish 16, is carried by and ada )ted to reciproeate sli fbtly upon the heads o bolts 40, secured in t ie spider-arms 41 ofthe sleeve 42, the said slee ver being secured to rotate with the sha1' t 5 by ineens of the key 43. In order that but one arnmturedisk may be brought into eontaet with the 5o driven member at a time, pins 45 extend through the said member and are slightly longer than the thickness ot said member, whereby when one ol' the disks is in contact with the corresponding face ot the member the opposite ends of the pins project beyond the adjacent lacc. A slight playY or lost motion is also permitted between the armaturedishs 16 und 3.) and the pins` 15, whereby when an armature is attracted it enquires sullicient 6o momentlun before striking the pins to deliver' n, heavy blow upon the pins and through them upon the opposite armature to free the latter troni the, ace ol tlfc driven member,

C5 circuit through. conductors :at :im .ti to the gized and attracts the armature-disk lt to that l'acc of the driven member and causes them to rotate together, thus drivin;r the rear S in onedirection at a slow speed. When the switch ist hanged to its other position to connect with the cmuluctor di, the current is cul, olll trom the said lirst coil ltl and passes through tlt` coil in the op iosite face, which energize this side ot the t rivcn member and attracts the disk ritt. Although the current has been eut oil from the coil of the o posite nuignet. the immature-disk 16 will e ing thereto, owing to the residual magnetism; butI the attraction of the, armature 39 causes it to strike the pins vt5 with sutlicient torce to separate the disk t6 from the adjacent lace ot' the driven member. The said member now in physical contact with the murature-dish Htl, which is rotating?T in the opposite direction at a greater speed, and therefore rotates with it in the direction reverse of that bet'ore described.

ln the moditied arrangement ol Fig. 4, 50 designates the motor, the shaft ol' which i provided with an extension 5l, ca"rvin; Y thc part 17 ol" the clutch, which is keyed thereto to cause it to rotate with the same. 'lhe attracted disks 52, which are shown o iposite the faces ot' the member 17. correspond to the similar disks lt and 3".) oil the previous Iig uros. They are'likewise carried upon suit able pins 5.), which are threaded Ihr( ugfh the arms` ol' thc .spiders tit and 4", f arricd bv the sleeves l2 and a l resper tively. lntthis` form, however. thc sleeves ride loosely upon the shaft and are secured to pinions 54 and 5.3, respectively, which intcrmesh with gears 5G and 57, carried upon a shalt 5S.A At the und of the latter Shaft a bevel-gear 5t) is secured and meshes with a corresponding gear titl, carried b v a vertical shalt. which is adapted to be connected with the mechanism ol the planer in yany suitable wav` ards G] and 62 are secured to the planta-bed (i3, carrying the shalt 5b and extension 5l ot the motor-slnll't. .ln this l'orm. ot thc invention tbe size of thc clutch may be materiali) reduced and its cost lessened. 'l`he clutch proper orthe member 17 is secured direeth to the motor-shaft'. and' as it carries the coils it is ol"considerable weight and serves the purpose of a (ly-wheel upon said lshall. 'l`he gears remain stationair)i even when the motor is running` il' neither side ot' the clutch is energized. 1t is not neeessaijv to form the gear-teeth upon the member 1T, as in the case ot' the form of invention shown in Figs. t, 2, and 3, 'lhe same arrangement as to the pins Ll5 existsin this l'orni as in that previousl)v described.

Suitable stand- IOC claim as new, and desire to secure by Letters Patent, iisl. The combination with clutch members, of a second member, and means to attract either of said clutch members and the second member together, and further means actuated when one of said members is first attracted to release by impact the other of said members, substantially as described.

2. The combination with two clutches, of means actuated when one clutch is energized to release by impact the second clutch, sub# stantialiy as described.

3. The combination with. two clutches adapted to be alternately energized, ofmeans actuated when one of said clutches is energized to release b impact the second clutch, substantially as ascribed.

4. The combination with two clutches adapted to drive machinery at different speeds and to be alternately energized, of means actuated when vone of said clutches is energized to release the V second clutch by impact, substantially as described.

5. The combination with two clutches ar ranged to drive machinery in opposite directions and adapted to be ener ized, of means for causin r one of said clutc es when energized to relbaso by impact the opposite clutch, substantially as described.

6. rl`he combination with two clutches arranged to o crate machinery in different directions an at different speeds, said clutches being adapted'to be alternately energized, of means to cause one of said clutches when acv tuated to release by impact the other clutch, substantially as described.

7. In a magnetic clutchdevice, the combination with a common member, of two copcratin members, one located opposite each face o lthe common member, means to cause mutual attraction between said common member and either of said coperating members, pins carried by the common member and adapted to be engaged by either cfsaid other members when attracted to the oommon member said pins bein slightly longer than the thic ness .of the sai carr 'ng member and slightly shorter than the distance between said op osin members when one is attracted and t e ot er unattracted, substan-4 the opposite armature substantially as described. Y

9. In a magnetic clutch, the combination with a clutch mem ber having channels formed in its opposite faces, magnet-coils located in said channels, armature-disks located opposite the said channels and adapted to be attracted by the ma nets, pins carried by the clutch member ancadapted' when one of said armatures is attracted to receive the impact of said armature and deliver it to the opposite armature whereby the latter is released from the clutch member, substantially as described.

10. The combination witha common rotatable member, means for energizing each face thereof, a second rotatable member mounted Y opposite each said lace of said common member, and means whenone of said second members is initially attracted to the adjacent face of said common member to release the other second member by the impact of a blow def livered thereto bythe said attracted member,

substantially as described.

ll. The combination with a magnet member, of two opposed members free to rotate inde endently of each other and adapted to be allternatelyattracted by said magnet member, and means to release onesueh member from the magnet member by the other opposed member when the latter is attracted, substantially as described.

l2. YThe combination with a shalt, of a clutching mechai'iism mounted upon said sha-ft and comprising a cinnmon member, and a second member opposite cach face of said common member, means to attract either. of

'said second members and said common member together, and further means actualed when one of said second members and the common member are initially attracted together to release .t'liie other of said second Vmembers from said bommen member by the im act of a blow delivered thereto, substantia ly as described.

13. In a magnetic clutch, the combination with a rotatable main bod 'and an eue rgizing coil located on each side or said main body, of independently-rotatable armatures, one on each side of said main body, arid a sliding rod extending through said main body of a'length somewhat greater than the width of said main body, whereby as one armature moves up to said main body the other is forced away therefrom.

14. In a variable-speed device, a revoluble shaft, a magnet having a plurality of coils .fastened thereon, inde endent transmittingwheelsloose] mounts on said shaft, an ar- `mature ri idly connected with each of said wheels eac i armature facingr a pole or poles of said magnet means for controlling the energization oi the actuating-coils of the magnet IIC independently of eachother, and means for preventing said armatures from simultaf neously eontaeting with. their respective magnet-laces when the eoils ol" said magnet are energized.

l5. ln a variable-speed deviee, a revolublf` shalt, a magiA at having a plurality of eoils fastened thereon, tra]lsmittlng-wheels of dil'- ferent diameters` loosely mounted on said shaft, an armature rigidly connected with each of said wheels eaeb armature laeing :l pole or poles ol' said magnet, means ['or eontrolling the energixation ol the inagnetwoils independently of eaeh other, and means for preventing said armatures from simultaneously eontae ting with their respective in a gnet-laees when theeoils of said magnet are energized, said means Comprising a rod or rods extending through said. magnet and having a length slightly greater than the distanee between the opposing faces of said magnet.

ll. In avaliable-speed mechanism, a revolublo shaft, a magnet fastened thereon` independent translnitting-wheels loose] r mounted on said sha f1 eaeh of said wheels )eilig fastened to a disk which faces a, pole or polesof the magnet and forms an armature therefor, and a rod or rods passing through said magnet whereby said armatures are prevented from simultaneously (.vontaeting with the opposing l'aees ol said magnet.

l?. In combination, a revoluble shaft, a double-faced eleetromagnet mounted on said shaft, two independent armatures loosely mounted on said shaft and adapted to eoaet with the opposing faees of saidmagnet, and a rod or rods carried by said magnet for the purpose of forcing one armature away from its magnet-lace when the other armature 1s 1n Contact with its magnet-face.

18. In a magnetic eluteh, the combination with the main body and energizing-coils loeated on either side of said mainbody,` of relatively rotatable armatures on op osite sides ol' said main body, a sliding rod) extending table body is foreed away from said third body.

20. The combination with two relatively movable bodies, of a third or (ventral/body,

electromagnetic windings for bringing either of said relatively movable bodies into engagement with said third body and means whereby when one of said relatively-movable bodies is brought into engagement with said third body the other relatively movable body is foreed away from said third body.

21. The combination with two relatively movable bodies, of a third or central movable body, eleetroma netie windings lor bringing either of said re ativelymovable bodies into engagement with said third body, and a rod supported bysaid third body for forcing one of said relatively movable bodies away from said third body when the other relatively movable body is in engagement with said third body. 4

In witness whereof I have hereunto subscribed my name in the presence of two witnesses` HENRY H. CUTLER. Wlitnesses:

F. lt. BAeoN, F. L. Planer-1.

Images