US924306A - Clutch. - Google Patents

Description

L. BAUOTH.

oLUTcH. APPLIUATION FILED AUG. 3. 1908.

Patented June s, 1909.'

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al EN Be it known that I, `LnoNHAnn BURo'rn, a citizen of the United States, and a resident others skilled in the art to which it apper Umm was PATENT @rrr-@4 LEo'NnARnBAtinojrn, or ToLEDdj oli'iozv citeren.

- No. ma@

To all may concern:

of Toledo, in the county of Lucas and 'State of Ohio, have invented a certain new and use'- ful Clutch; and I do hereby declare the following to be a full, clear, and exact description of the invention, such. as "will enable tains to make anduse the same, reference being had tothe accompanying drawings, and to the figures of reference; marked thereon, which form a part of this speciication'.

My invention relates to the class of clutches emplo ed empower-presses or other machines in w ichiit 1s desired to intermittently impart a single revolution to a shaft from a continuously-revolving element at the will of the operator..

The ob'ect of my invention is the provision of' a sitnpe, e'icient and improved clutch o'f this character, ,whichV is adapted to 'have a ositive land automatic release at each revo` utipn of the shaft, thus'rendering asecond revolution thereof impossible without the operator first releasing the treadle and again depressing it for such purpose, and which obviates the noise and clatter` heretofore inci- Y dent to the operationof clutches of this class.

The operation, construction and arran ement ofthe parts of theinvention are fu ly described in the following specification and illustrated in the accompanying drawings, in which, v

Figure 1 is a front elevation of a powerpress embodying my improved clutch, with a' portion of the .4 clutch mechanism' broken away and the clutch collar in released position. Fig 2 is a top plan view of the clutch parts disposed below the revolving parts with the bracketcarrying them 'in section, as along a line :c a: in Fig. 3, and Fig. 3 is an outer end view of said clutch parts and bracket.

Referring to the drawing's1 designates the shaft with which the clutch is associated, 2.a collar, which is keyed to the shaft, 3 a pulley or other continuously revolving element, which is loose on. the shaft, and 4 vthe clutchcollar, which is featheredy on the shaft inter mediate the collar 2 and vpulley- 3 to adapt it to be moved into or out of engagement with the clutch portion yof the pulley-hub'. The

clutch-collar 4 is influenced by coiled` compression-springs.5, interposed between it' and the collar 2, to, normally engage-,with the put leydmb, and is formed ciremferentially witl speetatatep er Lettersrama'.1 f Avv` iiatentea :rune e, isos. Apimcaaon med Aug'u'si a, 190s. serial No.fiae,`sle. i

l the V or taperewalled groove' and the cam groove 7 for the "purpose .hereinafter described.

- Supported-beneaththe collars'l2and 4, as by the -press iframe, is -a bracket 8, which is shown as being formed with the two vertically spaced ledgesfor shelves 8,but may be .of any other suitable construction. Working through vertically registering openings in the two shelves 8` 'ofthe bracket are the two' plungers 9 and 10, the former having lits upper end preferably wedge-shaped to adapt it to iit into the groove 6 of the clutch-collar 4', and the latter having its upper end preferably rounded to ada t it-to work in the camgro0ve7 of saidcol ar. These plungers are each influenced to enter their respective .grooves by the'action thereon ofthe coiled compression-springs*1'1, 11, which have their Yopposite end thrusts against the `top of the lower shelf 8 ofthe bracket' 8A and the lugs 9 ,and 10 projecting vfrom the.` sides of the respective plungers. A lock-bar 12 is also carried by the bracket 8 for'vertical movement beneaththe collar 2, and ispyieldingly l acted on by a spring 13 to cause its upper end to normally engage with a socket 2" in said vcollar when such socket is moved into register therewith, whereby to lock said collar and its shaft against rotation. The lockbar 12 has an arm lf2 projecting horizontally therefrom through incutsor 4recesses 14 provided in one side'crf'eachof theA plungers 9, 10

to adapt aflowering 'of the'lock-bar to lower said .p ungers out of engagement with the grooves', 7 in the clutchcollarand against the tension of their springsl, As it is necessary for the lock-bar 12 to move to release the collar 2 before the plungers 9, 10 are released from the clutch-collarto permit its engagement with thepulleyehub, the incuts 14 in thefsides of the -plungersare made of sufficient depth to preventy an engagement of f the Aarm- 125 on its lowering movement with the lower wall of the incuts until the bar 12 has moved free from its notch in the collar,

thus preventing an enga ement of the clutch before the lock-bar is re eased from the col- .suitable manner by the bracket 8 for vertical reciprocatory movements and has its lower y,

end connected to a'f'o'ot-treadle 16 or other controllingmexnber, as by a rod 17` and rockshaft 1.8. Toone' side ofthe bar 15 is pivoted the lower endlotaltrip-finger 19, which isformed with a catch-lug 19 for engagement with a catch-lug 12a on the side of thelockbar arm 12 whereby a lowering' of the tripfinger will effect a lowering ot' the lock-bar. The trip-iin'ger 19 has its upper end projected incontiguous position to the lcollar 2 and offset, as shown, to adapt it to be engaged by acam-block or projection 20 on said. collar and moved thereby on its pivot to effect` an automatic release .of its catch-lug from that of thegarm 12 at la predetermined point in a revolution of the collar A2, thus permitting a return of the lock-bar 12 to position to again work into the collar notch 2 when the collar has completed a single revolution. The finger 19 after being trip ed is returned to normal position by the in uence thereon of a spring 21, while the bar 15 and treadle when released are returned to normal ele vated position by a spring 15, or in any other suitable manner.

As the rotation of the collars 2,l 4 and shaft 1 stops` instantly upon the release of the clutch-collar from the pulley it isnecessary to provide other means than the cam-groove to throw the end ofthe clutch-collar free 'from contact with the end of the ulley-hub in order to obviate the objectiona le knocking of the clutch surfaces and conse uent noise as one rotates past the other. accomplish this by circularly beveling the ends of. the clutch projections or teeth of the clutch-collar, as shown at 4', to enable the continued rotation of the pulley to force the clutch-collar back a distance equal to the depth of such bevel, due to the ends of the clutch projections of the pulley-hub working thereagainst. As the clutch-collar is thus moved free from engagement with the pulley-hub the wedge end of the plunger 9 moves into engagement with the V-groove 6 of the clutch-collar, thusholding said collar lcompletely retracted relative to the pulleyhub until the treadle is again depressed to draw the plungers 9, 10 and lock-bar 12 from engagement with their respective collars.

As the plunger 9 always engages with the groove 6 at the same point therein it is apparent that it is not necessary to extend the groove entirely around the clutclncollar as shown but merely to provide a notch or socket in proper position on the clutch-collar for such purpose.v

The operation of my invention is as follows :'-The operator,l wishing tol impart a revolution4 to the shaft 1, depresses the foottreadle 16, thus lowering the bar 15 and attached trip-finger 19'and eil'ecting a consequent lowering of the lock-bar 12, from locking engagement with the collar 2. .The lockbar 12 on lowering has a slight initial movement relative to the plungers 9, 10, due to its arm 12 working in the meute 14 in said respective grooves in the clutch-collar 4, thus effecting a release of the lock-bar from its collar before the plungers have been released from the clutch-collar sol that the shaft isr fr'eeto turn with, the pulley as soon `as the' clutch-collar moves into engagement with the latter. When the collars 2, 4 have turned a short'distance the trip-finger 19 is engaged and moved by the cam-block or projection 20, carried by the collar 2, to eilect a release of the catch-lug 19 of said linger from depressing engagement with the catchlug 12a ofthe lock-bar 12, thus permitting the lock-bar, actuated by its spring 13, to rise until stopped by contact of its end with the periphery of the collar 2, and also per* mitting the plunger 10 to move into engagement with the broadened )ortion ofthe camgroove 7 l'of the clutch-coliar. As the collars 2, 4 near the completion of a single revolution the cam surface 71 of the cam-groove 7 coacts with the plunger 1() to cllect an inward movement of the clutch-collar to release the pulley on the completion of the revolution of the shaft. At the end of the` revolution the rotation of the collars 2, 4 and shaft 1 is positively stopped by the upper end of the locle bar 12 moving into engagement with the` socket 2 in thecollar 2. On a continued rotation of the pulley 3 relative to the clutchcollar the clutch projections of' the pulley cooperate with the beveled ends of the clutch projections of the collar to effect a further retraction of the clutch-collar so as to permit the wedge end of the plunger 9 to work into the groove or recess 6 to maintain the collar-in such position until again released by a depression of the treadle.

I wish it understood that I do not desire to be restricted to the exact details of construction and arrangement ofthe parts of the invention shown and described, as obvious modifications will occur to persons skilled in the art.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is`,-

1. In combination., a shaft, a clutcl'i-pulley loose thereon, a spring-actuated clutch-collaY feathered to the shaft-and having a periph eral cam groove, a yieldingly mounted plunger adapted to normally coperate with the cam-groove to move the clutch-collar to released position at a predetermined point in a revolution of the shaft, movable means for` mitanengagement ofthe clutch, and means for moving the tripfinger on its pivot at a- ,t predetermined point in a revolutlon of the i positions. 25

. having 'a peripheral camroove and the ends y moving said part and element to release the permit its return 'to locking position and the lplunger to move t'o engage said cam-groove,

lley loose on the shaft,- a `sprin ber With'the beveled ends of its clutch pro'- .of its clutch projections beveled, a movable the shaftv to release said-locking means' to.

substantially as described. i

'2. In combination, a shaft, a clutch-pulactuated clutch-collar feathered to the sha t and having a cam-groove,l a plunger normally 'actuated to engage'the camgro o ve to force the. clutch-'collar vout of engagement with the pulley at the end of each revolution of the Shaft, a lock-bar influenced tonormall lock of en agement with` its groove, a manually y ivoted `to said memberand movable therewith to effect a releasing movement of the lockbar to"per'.

shaft to effect a release of the lock-bar to permit it and the plunger to return to normal .3. In combination, a shaft, a drive mem-` ber loose on said shaft, a'clutch-collar feath ered to the shaft and normally influenced to engage the drive-member, said clutch-collar of its clutch projections eveled, a movablev part iniuenced to normally coact with said grooveto move the clutch-collar to released position, a `yieldingly movable element adapted to normally coperate with the clutch-collar to hold itinv a `position to which it is movedby the'coaction of the drive-'mem jeetions, and mechanism for' moving said part and element out. of engagement with the clutch-collar and automatically releasing them prior to, -a complete revolution of the collar to permit their rengagement with the collar, substantially as described.

4. In combination, a shaft, a drive mem ber loose on said shaft, a clutch-collar feathered to the shaft andnormally inlueneeii to engage the drive-member, said clutch-*collar having a peripheral cam-groove and the ends part influenced to normally coact withsaid groove to movethe clutch-collar to released position, a yieldingly movable element adapted 'to normally coperate with the clutch-collar to hold it in a position to which it-is moved by the coaction of the driveemember with the beveled ends of its clutch projections, manually controlled mechanism for;

and .element at a redetermined point in a drive-mem-V with a cam-groove and with a recess havin tapered Walls, a plunger normally influence to engage the cam-groove whereby to force theclutch-collar to released determinedpointin a revo ution thereof, a ,plungernormally influenced to engage said recess and to hold the clutch collar in a position to which it is forced by the drive member Working. against -itsbeveled end, meeh- `anism movable to draw the two plungers out 'of engagement with the collar, and means acting on said mechanism to release said plun ers to permit them to' move to engage the c utch-collar at a predetermined point 1n a revolution of the shaft;

6. In combination, a shaft, a' drive part loose thereon, a collar-keyed to the shaft and having a socket therein and aV cam projection, a clutch collar feathered to the-shaft and influenced to normally engage the drive position at a prepart, said clutch-collar having a peripheral cam groove and a taper-nailed recess and -also havuig the ends o' its clutch-projections circula'rly beveled, a bracket fixed laterally of said collar, a langer yieldingly carried by the bracket an( inlluenced to normally pro- -ject within said cam groove, a plunger yieldto normally project within the recess in said clutch collar, 'a' lock-bar carried by the bracket andinfluenced tonormally project within the socket in said keyed collar whereingly carried by the bracket and inliuenced.

ice

by. to lock the `same against rotatiom,4 said loe-lidiar having engagement with said'two pluugers from the clutch-collar when the lar, and means for moving the lock-bar to elle-et its releaseA from the keyed collar and a release of the tuo plungers from the clutch` signed'my name to this specilieation in the 115 presence of two subscribin" witnesses.

LEoNHAR) erinnern. Witnesses:

clutch-collar, and means adapted to coperate with said mechanism torelease said'partic. W. oww,l

Continu: Scnxnxnnn.

eck-bar is moved to release the keyed-col# plungers nlwreby to effect a release of said

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