US1090484A

US1090484A - Variable-speed mechanism.

Info

Publication number: US1090484A
Application number: US76067213A
Authority: US
Inventors: Richard K Le Blond; William F Groene
Original assignee: RK Leblond Machine Tool Co
Current assignee: RK Le Blond Machine Tool Co; RK Leblond Machine Tool Co
Priority date: 1913-04-12
Filing date: 1913-04-12
Publication date: 1914-03-17
Anticipated expiration: 1931-03-17

Description

R. K. La 5mm' L W. F. GRGENB. VARIALE SPEED MQHANISM I APPLICATION FILED API. 12, 1913. LQQQ Pasemedvar. 17, 1914.

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VARIABLE SPEED MEGHANISM. APPLICATION FILED 11.142,12, 1913 Patented Mar. 17, 1914.

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- VARIABLE SPEED MECHANISM.

APPLIGATEOH FILED APR. 12, 1-913.

atented Mar. l?, 1914;

Es y rirnnr ormon- Rol-AR-D K. LE BLOND AND WILLIAM l?. GROENE, OF CINCNNATI, UHIO, ASSIGNORS TO THE K. LEBLONB MAHNE TOOL CMPANY, 0F CINCNNATI, OHIO, C'lf reserviert or ome;

VRABLE-SPEEB MEGHANISM.

Specification of Letters Patent. E-*awgd ga?, 11 1g Application filed April i2, 1913. Serial No. 760.672.

To ail 'ie/Lem it may com :ern

lie it known that We, RICHARD K. Ln

BLOND and Winmirr l?. Groeien, citizens oi i spindle and dririno sbzit't.

r iS also our objeet. to so' oo'nftrui't nud :irrnnge the bnfh geur drivin;l nierhzinism that it, will be beth simple :1nd inexpensive to manufacture und easy :rnd relinble in operation. i

Other objects will appear es the leseription proceeds.

The invention will lie first desi-ribed in connection with the accompanying drawings. which constitute a part. of'this specificat-ion1 and then set forth more specifically in the elnims at the end of the description.

ln the accompanying drawings, in which the suine referente Characters :ire used to designate similar parts throughout all the views: Figure 1 is n longitudinal section et n inthe liendstoek provided with our iini'iroved gearing, the section being taken through the spindle. intermediate shaft and ("lriving,- shaft :is indicated by the line 1-l in Fig. 3; Fig. 2 is :i longitudinal vertical section through'dm spindlezinigl back geur shaft on the line .lL-ll ot Fig. Fig. 3 is n vertical cross section on the line llllll of Figs. l sind Q, :md Fifi. 2i is e, front elevation of the liemlstoi-,k on a red need scale,

The driving slinft A, which is actuated by n. drive pulley a, Fig. l, carries cluster gears a, a? und o3, splined to seid shaft, und adopted to selectively mesh with gen1-s b', if sind Zr on the intermediate shaft B. Said cluster goers nmy be shifted by turning a rrnnlr C on the front, of the casing D. of the @liendstoeln the crank C being attire-hed to a rock shatte also carrying :in erin c pro-v vided with n shoe e2 engaging the groove a* in the cluster gears.

The gears b b2 and b3 are keyed to the 1z1- The Hrst. two oil these gears may be integr-nl. :ind lthe third sepa.- rnt-e, 'is illnstrutml. The intermediate. Shaft also enrries another grenr 7) which may be eut in the slnittbetiveen the goers i'i, 52 and the gear 53. This four 7,1 is constantly in mesh with .fi p 'ezir e loose on a sleeve E which is itself loosely mounted :ironnd the spindle F. The fear b is ronstnntly in mesh with :mother from' l" loose on the sleeve lil.

'ilie'genrs e and w" :1re equipped with eluteh members, jneteriibiy positive clutch members f2 und e, respectively, lering eneli other. Splined on ihr Sleeve il between said gears is n spool G havingvluteh members Ar/ :ind ff ivliieh nre sninxilenientnl lo the vlntvh members e2 und w". resieilively, 'l'he spool (i muy be shifted on the sleeve so :is to terniedinte shaft. l.

bring' either one ot its rlnteh members inte operative engiifvunent .vith the correspondin?,r rlnleh member el one or the other oi seid gears, by any suitable menus, such es :i iniud lever ll Carried by :i sind i1. provided with n volte fi having nv shoe 71.2 engaging the groove g2 in seid spool,

From the foregoing it will he Seen that the intermediate shiit muy 'ne driven nt three differentspeeds troni the driving-ij shzii't by reason of the cluster gears being adapted to mesh selectively with the fleurs b', b2 :ind L on said intermediate shaft, und that en'ch ot sind three speeds oi the letter shaft iinilf be trmismittedto the sleeve E :it tivo direrent speeds on account ot the meshing of the gears b and e, :ind 5 end-e, respectively, either of said gears e er e. being adapted to he looked to said sleeve by properly shift.- ingthe spool G. vHence the "sleeve E may be driven from ,the driving shaft at six different s eeds i v The s eeve may coup" directly with the spindle tfygetI the' gliev open drives of the letter, orsniii indie' may be driven from the driving' shari; indirectly through the back gear she-ft K, to get sixadditional,

is mounted a gear lo constantly in mesh with 'im Bil ved to the spindle, and a supple. 105

the gear c and a gear 3c adapted Ito mesh' with. the gear L. "The gear may be keyed to a bushing k2 which is splined on K, and the gear lo may be fast on said shaft, so that in order to move the gear le into and out of is movable axially.

Now it is obvious that the direct connection between the sleeve and spindle must be severed before the back gears are brought into play, and vice versa'. We have provided means for accomplishing both of these mperations in the proper order and times. rllhis means consists of a hand lever N carried by a stud a also carrying oppositely extending bifurcated arms n and n2. The arm n is provided with a shoe n3 engaging the groove fm. in the spool M The arm n2 has a shoe a* engaging the groove p in a collar l? fixed to the shaft K. By reason of this construction, the swinging of the lever N slightly to the right, Fig. 2, will shift the spool M to the right so asto bring its clutch member m into operative engagement with the gear L which'is the clutch member Z on fast onv the spindle, thus throwing in the direct or open drive. lt will be noted that in this position of the paris, the gear la is out of mesh with the gear L; Now if the leverN is swung to the left, Fig. 2, the spool M will be shifted to the left and the lgear 7: and shaft K will be shifted to the right with the result that the clutch member m will be [irst separated from the clutch member Z and 'the gear 7c will then be brought into mesh with the gear L, thus throwing out the direct or open drive and throwing in the indirect or back gear drive. This back gear 7 drive from the sleeve to the spindle is throughy ear e", gear 7n, bushing k2, shaft K, gear c', and gear L.

Having thus described our invention what we claim as new and desire to secure by Letters Patent of the United States is:

l. The combination with a spindle, of a 'sleeve loose thereon, means to drive the sleeve, a clutch member fast on.. the spindle, a supplemental clutch member' splined on the sleeve, whereby the spindle may be driven directly from the sleeve,'means for indirectly driving the nspiindleo' from the sleeve including agear fast on the spindle,

. a back gear shaft mounted to slide in 'its bearings, a gear fast thereon and adapted t0 mesh with the gea-r` which is fast on the spindle, constantly intermeshing gears on the sleeve and backgear shaft, and means `for shifting the clutch member on the sleeve and for moving they back gear shaft axially.

2. The, combination with a spindle, of a sleeve loose thereon, means to drive the sleeve, a gearffast on the spindle, a clutch member on said gear, a supplemental clutch member splined on the sleeve, whereby the theshaftf mesh with the gear L the whole shaftfspindle'may be driven directly from the 'sleev e, 'i

n means for indirectly driving the spindle from the sleeve including the gear fast on the spindle, a back gear shaft. mounted to slide in its bearings, a. gear fast there-- on and adaplted to mesh with the gear which is fast on t e spindle, constantly intermeshing gears on the sleeve and back gear shaft. and means for shifting the clutch member on the sleeve and for moving the back gear shaft axially.

3, The combination with a spindle, of a sleeve loose thereon, means to drive the sleeve, a clutch member fast on the spindle, a supplemental clutch member splined on the sleeve, whereby the spindle may be driven directly from the sleeve, means for indirectly driving the spindle from the sleeve including a gear fast on the spindle, a back gear shaft mounted to slide in its bearings, a gear fast thereon and adapted to mesh with the gear which is fast on vthe spindle, gear on the sleeve, a second gear mounted on the back gear shaft to turn therewith, but held against axial movement with the same so as to constantly mesh with the gear on the sleeve, and means for shifting the moving the back gear shaft axially.

4. The combination with a spindle, sleeve loose ,thereon sleeve, a clutch member fast to the spindl, a supplemental clutch member splined on the sleeve, whereby the spindle may be driven directl from the sleeve, means for indirectly driving the spindle from the sleeve including a gear fast on the spindle,

a back gear shaft mounted to slide 1n its' bearings, a gear fast thereon and adapted to mesh with the gear which is fast on the spindie, a ear on the sleeve, a second gear mounte on the back gear shaft and constantly in mesh with the gear on the sleeve a bushing inte osed between said shaft a second gear t ereon, said bushing being keyed to said secondgear and splined to the back shaft, and moans for shifting the clutch member on the sleeve and for moving the back 'Rar shaft axially.

.5. e combination with a sleeveloose thereon, means to drive the sleeve supplemental clutch members on the spindle, and? sleeve, one of said clutch members being movable to and, from the other, a gear fast on the spindle, mounted to slide axially in its bearings, a gear fast on said shaft and adapted to mesh with the gear on the spindle, constantly intermeshing gears on the sleeve and shaft, a

clutch member on the sleeve and for means to drive thev los y spindle, of a 116 a. back gear shaft 120 hand lever, and means for operating the 125 sleeve thereon, means to drive the no sleeve, supplemental clutch members on the spindle, and sleeve, one of said clutch members being movable to and from the other, a gear fast on the spindle, a back gear shaft mounted to slide axially in its bearings, av

`eur fast on said shaft and adapted to lnesh with the gear on the spindle, constantly intermeshing gears on the sleeve and sha t, an intermediately pivoted lever operatively connected at one end with the movable clutch and at the other end with the back "car shaft, and means for swinging said lever for the purpose specified.

7. The combination with a spindle, of a sleeve loose thereon, means to drive the sleeve. supplemental clutch members on the spindle and sleeve, one of said clutch members being movable to and from the other, a gear fast on the spindle, a back gear shaft mounted to slide axially in its bearings, a gear fast on said shaft and adapted to mesh with the gear on the spindle, constantly intermeshing gears on the sleeve and s aft, an intermediately pivoted lever oerativelv connected at one end to the mova le clutc and at the other end to the back gear shaft, and means connected directly to said lever for swinging the same, whereby the clutch will be moved in one direction and the shaft in the opposite direction.

8. The combination with a spindle, of u sleeve loose thereon, means to drive the sleeve, supplemental clutch members on the spindle and sleeve, one of said clutch members being movable to and from the other, a gear fast on the spindle, a back gear shaft mounted to slide axially in its bearings, a gear fast on said shaft and adapted to mesh with the gear on the spindle, constantly intermeshing gears on the sleeve and shaltt, an intermediately pivoted lever operatively connected at one end to the movable clutch and at the other end to the back gear shaft, and means connected directly to said lever for swinging the same, whereby the clutch will be moved in one direction and the shaft in the opposite direction, the pivot of said lever being arranged nearer the end which is connected to the clutch in order to give a greater movement to the shaft than to said clutch.

In testimony whereof we have signed our names to this specication in the presence of two attesting witnesses.

RICHD. K. LE BLOND. lVM. F. GROENE.

Witnesses:

GRACE A. PUGH, In. INGEasoLL.

Copies o! this patent may be obtained for live cents each, by addressing the Commissioner of Patents Wsshington, D. 0."