US1374039A - Clutch and change-speed mechanism - Google Patents

Description

0. R. STROM E.

CLUTCH AND CHANGE SPEED MECHANISM.

APPLICATION FILED DEC. 1. 1919.

1,374,039. Patented Apr. 5, 1921.

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033m B. s'rnoMn, or PLEASANT nALE; SASKATCHEWAN, CANADA...

CLUTCH Ann orianeEsrEnn MECHANISM.

To all whom it may concern: f

Be it known .that I, ORRIVN R. 'STROME, a citizen of the United States, residin at Pleasant Dale, in the Province of. askatchewan, Dominion of Canada, have mvented certain new and useful Improvements in Clutch and Change-Speed Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art. to which it appertains to make and use the same v This invention relates to. power transmitti-ng mechanisms, and'has for its object to provide a mechanismoperating upon the principle of friction, by means of which power may be transmitted from a drive shaft to a driven shaft; by means of which the driving connection may be severed at times; and by means of which the relative speed of the two shafts may be gradually varied from a one-to-one ratio, in either direction. 3

Another object is to provide a structure which will be relatively simple and compact. In the drawings: Figure 1. is an elevational viewrpa'rtly in section, partly broken away, and partly in, dotted lines illustrating the present lnven- 131011. V Fig. 2 is a view similarly illustrative of the structure, the parts being shown in top plan.

A Fig. 3 is a detail view partly broken away and partly in section, showing one of the rolls in elevation,

Fig. 4 is a detail section through the transverse shaft and. the movable sleeve which is splined thereon.

The present invention includes generally a pair ,of opposed friction disks indicated in thedrawings at 18 and 19 which disks are shiftable toward and away from each other as will be later explained, this shifting movement of the disks being provided in order that they may be broughtinto and out of contact with a .pair of friction rolls indicated'at 22 and 22 in the drawings.

These rolls are mounted for movement diametrically of'the disks, and means is provided for moving them in unison, the structure being such that when one roll is shifted toward the periphery of the disks the other,

roll is shifted toward their centers. One of the rolls is carried by a drive shaft inclicated 3,1324 while the other is carried by Specification of Letters Patent.

Application filed December 1, 1919. Serial No. 341,824.

Patented a driven shaft indicated at 23, and since,

as will be seen from the drawings, thefric-r Apr. 5, 1921.

operation; and purpose,

casing'including end'walls 7*and 8, side walls 9 and 10 and top and bottom walls N} each indicated at 6.. Mounted transversely of the casingfand extending outwardly ,be-

yond the side walls 9 and lO'there is ashaft 11, the outer ends of which aremounted in supporting and bearin .members 12, the

the walls 9 and 10.

Engaged upon the shaft and lying one.

in each ofthe openings 13 there are slidshaft being engaged wit inopenings 13 in able sleeves-13 .and 13*, the sleeve 13 being splined upon the shaft 11 as illustrated in Fig. 4. These sleeves 13 and 13*. carry re- H spectiv'ely the disks 18 and 19, thesedisks being located within ithe casing but having portionsthereof projecting outwardly of the casing through .suitableslots indicated at Z. ,A collar; B is engaged with each of the sleeves 13 and 13 for rotation of the sleeve with respectfthereto but for movement of the sleeve through movement of Q the collar, and toggle link mechanism-indi.-,

cated at v14 is connected with each collar and with the adjacent bearing member 12 as clearly shown in Fig. 12., Suitable levers C are connected by means of links C with the toggle link mechanisms and these levers C are connected through the medium oflinks 15 with-a yoke 16, which, in turn, .is' connected through the medium of aball-and-v socket D and links E.with a hand lever 17 ;shown best ;in Fig; 1. The structure is thus such that when the hand lever 17 is moved in one direction the resultant'operation of the link mechanisms 1 1 shifts the sleeves 13 and'13 inwardly and moves the disks 18 and 19 toward each other,'moverectionseparating the disks. I

As set forth inthe general statement of .ment of the hand lever in the opposite di-.

structure and operation, the friction rollsj 22 in unison, there is provided a structure which includes two cross members 28, one for each roll, these cross members including collars 27 engaged in circumscribing grooves 26 formed in hub extensions of the rolls. The ends of these cross members are provided with heads 32 which are slidably engaged in slots 31 formed in the top and bottom walls 6 of the casing, and the two cross members 28 are connected bylongitudinal rods 29 slidably engaged in guideways 30 formed in the web 20. 1 A hand lever 33 is connected with one of thecross members 28 by suitable linkage indicated at F and it will thus be apparent that when thehand lever 33 is moved in one direction the roll 22 Will beshifted inwardly toward 3 0 .the centers of the disks 18 and 19 while the roll 22 is shifted outwardly toward the peripheries of the disks.

In the operation of the structure, the

I drive shaft 24L'is rotated and carries the roll 22 'therewith. The disks 18 and 19 having previously been brought into contact with the tworolls, these disks are rotatedby the roll 22 and they, in turn, impart rotation to the roll 22 which carries the driven shaft 23 therewith. If the rolls 22 and 22 are equi-distant from the centers of the disks 18 and 19, a one-toone ratio betweenthe" shafts 23 and 24; is established. If the roll;

I 22 be shifted outwardly with resultant in ward movement of the roll 22, the speed of the shaft 23 is'increased, while if the roll 22 be moved inwardly while the roll 22 is moved outwardly the speed of the shaft 23 is reduced. 7

A special advantage of the present construction lies in the fact that by reason of the arrangement of parts a very compact mechanism may be produced. This advan tage results from connecting the two rolls 22 and 22 for movement thereof in unison since inward movement of the roll 22'. re-

direction results in a considerable change of the gear ratio between the two shafts 23 and 24:. j e

It will of course be understood that operation of the lever 17 to shift the disks 18 and 19 out of contact with the rolls 22 and 22 disconnects the two shafts 23 and 2 1' absolutely from each other sothat the shaft 2 1 may rotate freely without impart ing rotation to the shaft 23. p 7 1 If desired, the shaft 11 may be provided withan extension at one end as indicated at X so that power may be taken from this shaft as well as from the shaft 23.

It will bejunderstood, furthermore,-that while the present invention has been described as mounted with the disks 18- and 19 lying in vertical. planes, they may. be disposed in any desired plane without affecting the operation ofthe mechanism.

InFig. 1 there is illustrated at A a means 7 for lubricating the bearings of the several shafts which are formed *by the web 20.

- What is claimedisr. 1

A mechanism of the class described including a casing having guideways therein, a web located in the casing, a shaft j ournaled in the casing and in the web, friction disks mounted uponthe shafts for independent rotation, means for moving the friction disks toward each other, shafts] journaled in the casing and in the web in alinement with each other, friction rolls slidably mounted upon the alinedshafts for rotation therewith, a shifting frame connected with both of the rolls for movement of the. rolls upon their shafts, guide heads carried by the shifting frame and ar ranged to work in the guideways, said web having guideways therein, said shifting frame being slidably engaged in the guide ways of the web, and means for moving the shifting frame.

Witnesses ALICE VVooLsnY, CLELLA HENNING.

ORRIN R. sTnoMEj

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