USRE13554E - Frederick s - Google Patents

Description

F. S. ELLETT.

CLUTCH.

APPLIOATIUN FILED OOT.28,1911.

Reissued Apr.i15, 1913.

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of New UNITED STATES FREDERICK S; ELIiETT, OF ELMIBA, NEW 203 K.

PATENT OFFICE.-

cnurcn.

1911.' Seria1No.658;105.

I Specification .01 Reissued Letters Patent. Reiggued Apr, 15', 1913, I

No. 503,184. fipplicat'ion m reissue filed ember 25,

To all whom it may concern: Be it known that I, FREDERICK S. Ennnrr, a citizen of the United States, residing at Elmira, in the county of Chemnngen d State- York, have invented certain nevs and useful Improvements in Clutches, of

' which-the'foll'owing is a specification.

, out of 'enga This invention relates more particularly to improvements in clutches for motorcycles, whereby the driving pulley is thrown into or ement with the engine shaft; my object being to provide a simple and effective clutch for this purpose which may be actuated from the handle bar of the ma chine to take up the load; gradually when throwing in the clutch.

' 3'and4 a plan view y multiple able cone.

- arts of the clutch and o is rigidly fastened.

I attain -my object by constructing the crating mechanism in the manner illustrate in the. accompanyin' drawings in which, igure I presents a sectional View of the clutch as attached to the end of the engine shaft; Fig. 2, 'a detail showing a portion of the clutch, sectioned on the line w-w in liig'. 1, the'cap' piece? being removed; and Figs.

and side elevatio'm'respectively, of the operatin "lever tobeatq tached to one of the-hand es of the motor cycle. .v i Like numerals designate like, parts. in the several views.

To the end of the'engine shaft 1, a hill) 2 Upon this huh'the belt mounted on the -ball' bearing i$cha1nliered out'at 5 to receive the tion disks 6, 'and'thischambered' portion of the pulley '5 closed by a cap piece which is fastened thereto screws 8 lea ixrthechamber. This cap piece rides onnf caring 9 sn ported" uponflthe'adjust- 10 whic 's screw-threaded upon pulley 3 is The pulle one all the'outwar'd end of the'reducedportion 11 er the hub 2.. 4 5

3 setting- 1p mechanism setting-hp mechanism This outward end oftlhe'hub' is chambered at 12 to receive at the end of shaft 1, also to receive the of the; .clhtch. This Eonsists' of a screw 14 thread of steep pitch, which nut 15 held; stationeryby 16 fastenedfby means ofen having a double passes through a rt. The niit 15'-is' held in on "end of thehub by means of the'lock nutgiB I easing orotherfixed of the chamber 12 against the outer face of the cone 10. The screw connection between this cap and the hub ,is left handed, so that when said cap is screwed up against the cone 10, after said cone has beeti properly ad 'justed, the two parts are securely locked in place, As the cap piece 18 rotates with the engine shaft, while the-nut 15 is stationary I provide a ball bearing at 19 between it and the nut-Q An operating arm 20 is fastened tothe outward endof screw 14, and the inward end of this screw impinges against the disk' 21, which in turn presses against a disk 22 provided with arms '23, which pass through slots 24 provided therefor at the 76-. outward end of the hub 2. The arms 23 engage the rooves 25 cut into the outward face of the isk 26, which is slidably mountedon the reduced portion '11 of the hub 2, the per'ph'ery of this portion of the hub being made hexagonal, as shown at 27 in-Figc 2, end the disk 26 being' bro'ached out hexagonally to'fit the hub as to'be rotated thereby. Alternate friction disks 6 will also be fitted to this portion oi the hub, while the 80 intermediate disks will be coupled to the pulley shell by means of tongues 28 which project into grooves 29 formed at suitable intervals around the wall of the'chamber 5, (see Fig.' 2). The innermost friction. disk engages a bearing surface 30 formed on the pulley attire inward end of the chamberfi. To avoid friction'between disks 21.n1id22, and to provide for the freelrunning of the clutch when set up,e ball bearing disk 31 is inserted between these .twodislist L To operate the clutch I provide on the handle bar, of the motor cycle a lever-"37. iv; oted upon the end of an arm 32 fistenedhymeans of a clamp 33, to the underside of the 95 handle bar, in position. to be readily menipnhated by the thumb or'fin'ger where the hand of the rider the handle. This lever i connected with the'arm- 20 by a flexible-steel M11134, which is conducted from the handle 0 berth the'clutch bymea s of suitable guides .(not shown) attached to ,the' frame or other parts of the machine. T6 holdthe lever 37 in a, lockedfpositioh when the'clutch is set, provide a flat spring 35, whichextends from the clamp 33'ove'r e11d beyond the-leve r, said spring being rovided ct 36 with an inclmed catch over w ich the lever passes when setting the clutch, thespring' causing said cazsh to snap in back of the lever. when theclu h is fully set. To release the clutch, the spring is pressed upward until the catch is freed from the lever. This relieves the tension on arm 20, and the pressure back of the screw 15 causes it to turn outward, by reason of the steep pitch of the threads. In setting the clutch, the lever 37 is gradually pulled backward over the catch, thereby slowly taking up the friction and imparting motion from the driving shaft to the pulley.

\Vhat. I claim as my invention and desire to secure by Letters Patent is 1. The combination with a rotary shaft, of a. hub fastened upon one end thereof, a concentric wheel mounted for free movement upon said hub, one or more friction disks connected to the hub positioned in a-chamber provided thereforbetweenthe hub and wheel and adapted to engage a friction member or members on the Wheel, afixed nut-mounted concentrically at the outward end of the hub, a screw passing through said nut,means for imparting a turning movement tosaid screw, and means rotating with the hub and actuated-by'thescrew whereby the inward movement of the screw will be imparted to the friction disk ordisks.

' 2. The combinatiqn with a rotary shaft, of a hub fastened upon one end. thereof, a concentric wheel mounted for 'free movement upon said hub, lateral extensions (on the hub and wheel forming an annular chamber between the two, one or more friction disks in said chamber. connected to the hub and adapted to engage a friction member a ormembers on the wheel, adisk slidably mounted-in a central bore inthe outward end of .the hub extension, arms projecting from said disk through longitudinal slots in the hub extension into engagement with the friction disk or disks, a fixed nut mounted concentrically at the outward end of the hub extension, a screw .passingthrough said nut and adapted to press the armed disk inward, and means for turning the screw.

3. The combination with a rotary shaft, of a hub fastened upon one end thereof, a concentric wheel mounted upon a ball bearing upon said hub, lateral extensions on the hub and wheel-forming an annular chamber be-. tweenthe two, a plurality of friction disks in said chamber alternately connected to the hub and wheeLthe innermost disk adapted to engage a friction surface on the wheel, a cap piece fastened tolth'e outward end of. the wheel extension, a ball bearing said cap piece, a cone for. said bearing screwed upon the end of the hub extension, a .cap piece screwed'into acentral bore in the hub extension against said cone, a concentric nut mounted on a ball bearing in the outward end of the last named cap piece, means for holding said nut stationary, a. screw passing through the nut, a disk slidably mounted in the bore of the hub extension, a ball thrust bearing between said diskand the end of the screw, arms projecting from said disk through longitudinal slots in the hub extension into engagement with the outermost friction disk, and means .for turning the screw.

t. The combination with a rotary shaft, of a hub fastened upon one end thereof, aconcentric wheel mounted for free rotation upon said hub, concentric clutch members mounted between the wheel and hub, and means having connect-ion with the clutch members and concentrically mounted intthe' outward end of the huband independent of the rota- ,tions thereof for actuating the clutch mem-' bers.

5. The combination with a rotaryshaft, of a hub fastened upon one end thereof, a con ,"centric wheel mounted for free rotation upon said hub, concentric clutch disks mount." in

a chamber formed between the 'hub and wheel, a longitudinally movable member concentrically. mounted in the outward end of the hub and independent of the rotation thereof, and means actuated by the inward movement of said member for actuating the friction disks. a

6. The combination wlth amotor cycle, of a hub fastened upon the motor shaft, a

concentric pulley wheel mounted for free rotation upon said hub, clutch members between the hub and wheel, a screw mounted in a fixed nut concentrically at the outward end of the hub, means act ated'by said screw for actuating the clutch members, and means for turning the screw operable by the rider;

7. The combination with a motor cycle, of a hub fastened upon the motor shaft, a

concentric pulley wheel mounted for free rotation upon said. hub, clutch members between the hub and wheel, a screw'mou-nted in a fixed nut concentrically at the outward end of the hub, means actuated by said screw for actuating the clutch members, an

arm on the screw, and means on one of the handle bars of the machine for operating said arm.

8. A clutch for motor cycles comprising a rotary shaft, a member secured on the end of said shaft and having a tubular extension 'in axial alinement with; the shaft, spaced roller bearings 'on said member, a wheel carried by. said bearings, friction disks carried by said member between saidbearings, friction disks carried by said'wheel and alternately arranged with said firstment-ioned disks, a non-rotatable threaded member, a rotatable threaded member 0- operating with said non-rotatable threa ed member, means arranged in sald tubular ex-.

tension, and connecting one ofsaidthreaded members with' one of said dlsks, whereby the disk is actuated to effect engagement and releaseofthe disks, and means for ,operating said rotatable threaded mem er.

9. A clutch for motorcycles comprising a shaft, a member arranged on said shaft, two spaced roller bearings on saidmember, a Wheel having a chamber therein and an interior web which is mount-ed on one of said bearings, an end plate secured to said Wheel and closing the outer side of said chamber,said plate being mounted on the other of said bear: 111 s, friction disks carried by the wheel in sa1d chamber, friction disks carried by said member and alternately arranged with said first mentioned disks, a 'non rotatable threaded member, a rotatable threaded member cotiperating with said non-rotatable threaded member, means for holding one of said threaded members against axial movement whereby the other threaded mem ber is moved axially by the rotation of the rotatable threaded member, and means actu ated by the axial movement of said other threaded member to effect the engagement and disengagement of said disks. 10. A clutch for motorcycles comprising a shaft, a member arranged on said shaft, two

spaced roller hearings on said member, a wheel having a chamber therein and an interior web which is mounted onone of said bearings, an end plate mounted on the other of said bearings and secured to said Wheel, friction disks carried by the wheel in said chamber, friction disks carried by said member and alternately arranged with said first-mentioned disks, a non-rotatable threaded member, a rotatable threaded member cooperating with said non-rotatable threaded member, means for holding one of said threaded members against axial movement, whereby the other threaded member is moved axially by the rotation of the said chamber for engaging said wheel and said rotary member, and means comprising cooperating rotatable and non-rotatable threaded members one'of which is axially movable and is connected with one of said clutch members for moving said clutch members into gripping engagement.

12. A clutch for motor cycles, comprising a. rotary member, a wheel mounted for free rotation on said member and having an interiorly arranged abutment, a friction disk carried by said wheel, a friction dlsk carried by said rotary member; and adapted to be compressed between the first mentioned disk and said abutment, and means for compressing and releasing said disk, including an axially movable disk carried by the rotary member, a non-rotatable threaded member, a rotatable threaded member, and a thrust bearing between the axially movable disk and the rotatable threaded member.

FREDERICK S. ELLETT.

Witnesses J. Cosrnnno, D. H. CANFIELD.

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