US392782A - Linus p - Google Patents

Description

(No Model.)

L. P. CLAWSON, J. A. KELLER 8v J. W. SEE.

MEGHANISM POR TRANSMITTING MOTION.

No. 392,782. Patented Nov. 13, 188:8.v

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Inventors, L., -u/mw TY. Sm',

Witnesses Attorney vIliurrnn Srarns- Partnr' LINUS P. OLAIVSON, JOHN A. KELLER, AND JAMES IV. SEE, OF HAMILTON', OHIO, ASSIGNORS TO THE BLACK J @LAWSON COMPANY, OF SAME PLACE.

WIECHANBSM FOP? TRNSNHTTING lVlO''lON.

SPECIFCATION forming part of Letters Patent No. 392,782, dated November 132, 1888.

Application filed July 21, 1888.

To @ZZ whom it may concern:

Be it known that we, LINUS P. CLMVsoN, JorrNA. KnLLnR,and Jarras W. Snn,of Harnilton, Butler county, Ohio, have invented certain new and useful Improvements in Mechanism for Transmitting Motion, of which the following is a specification.

This invention pertains to mechanism for transmitting motion, and relates particularly lo to a device for transmitting rotary motion to two shafts in such manner that the rotary force will be transmitted equally to the two shafts, while the velocity of rotation of the two shafts may vary with reference to each other, according to the degree of resistance offered to the rotation of the individual shafts.

An example of the utility of our mechanism may be found in machines for winding paper. Assume a roll of wide paper to be slitted into 2o two narrower webs and wound into rolls. The wide web of paper is usually carried over the slitters, and the resulting two continuous narrower webs go to two spindles which wind them into rolls. The motion or the paper is generally produced by the winding up of the two narrower webs, the pull thus produced on the paper causing the paper to unroll from the initial roll and to properly pass through t-he slitters. It is obvious that the paper will loe 3o Wound up faster as the diameter' of the rolls increases, the unwinding from the initial roll becoming of course correspondingly more rapid. So long as both of the narrow rolls maintain precisely equal diameters the strains upon the two narrow webs will of course be the same; but one of the rolls is liable to in crease in diameter faster than the other, and consequently the larger roll of the two, both being driven positively at the same rate of 4o speed, would determine thevelocity with which the paper is unwound from the initial roll and pulled through the slitters. It is obvious that the smaller roll ofthe pair will in such case be unable to wind up its web as fast as supplied. Furthermore, one of the webs of paper is liable to be broken, and, in case the other web continues to wind up, one of the webs becomes disordered and often largely wasted. Winding machines are often arranged to drive Serial No. 280,607. (No model.)

through the medium of friction in such man- 5o ner that the roll under greatest .strain will slaclren its velocity, so that the several webs are kept at equal tautness. Sometimes winding devices are operated through the medium of compensating gearing in such manner that the velocities of rotation of the several windingspindles apportion themselves to the strain imposed upon them by the pull of the web which they wind. Vinders thus arranged with co1npensating gears have heretofore involved a multiplicity of shafts-that is to say, a greater nu mher of shafts than there were windingspindles.

Ourinventioninvolvesaeompensating-gearing system, but necessitates the use of no more shafts than there are windingspindles--that is to say, it' we wish to produce the motions for two winding-shafts we involve no intermediate shaft. A

W'e illustrate our invention in connection with a mechanism adapted to transmit motion to a two-spindle Winder.

Our improvements will be readily understood from the following description, taken in connection with the accompanying drawings, in which Figure l is a plan of a transmitting mechanism arranged to transmit motion to two winding-spindles, much of the mechanism appearing in horizontal section upon the line a c of 8o Fig. 2; Fig. 2, aside elevation of the pulley D; Fig. 3, a sectional plan of the pulley D and its immediate accessories, the section being taken upon the line b b of Fig. 2; and Fig. 4, a diametrical section of the pulley D iu the same plane as the section in Fig. 1, this View representing the gearing in modified but equivalent form.

In the drawings, A represents frame-work for the support or" two rotary shafts, B, one of 9o the shafts to which rotary motion is transmitted, this shaft beingillustrated as provided upon one of its ends with a squared portion to engage the usual square socketin the end of a removable windingspindle; C, a second similar shaft arranged parallel with the rst one and intended to be rotated in the same direction; D, a pulley loose on the shaft B and intended to receive the drivingbelt for transmitting rotary motion to the apparatus; E, a gear fast on the shaft B; F, a planet-spindle housed in the pulley D parallel with the shaft B; G, a broad pinion on this spindle, this piuion gearing with the gear E; H, a gear loose upon the shaft B and similar in size to the gear E; J, a sprocket-gear united to the gear H and arranged to revolve with it; K, a sprocket gear fast on the shaft C; L, a chain belt transmitting motion from the sproeket-gearJ tothe sprocket-gear K; M, a second planetspindle journaled in the pulley D parallel with the planet-spimlle F; N, a pinion fast upon one end of this second planet-spindle, this pinion gearing into the pinion G, but not gearing into thegear llandl), asimilar'pinion fast upon the opposite end of the second planetary spindle, M, and gearing into the gear H.

Assume for the time being, in connection with Fig. I ,that pinions G and I areboth fast upon spindle F and that the spindle is free to revolve in its bearing in the pulley. Under such circumstances itis obvious that if rotary motion be transmitted to the pulley it will revolve freely upon the shaft B and that no motion will'be transmitted tothe shaft or to gears E and H by reason of thefact that the assumed planetary spindle and its two pinions would be at liberty to freely rotate during their planetary travel. Under theassumcd construction the device would therefore be inoperative; but let it be observed that the pinions G and l are upon two separate spindles and that these two spindles are geared together by the pinions G and N. Now, whenwe revolve pulley D the tendency of the planetary work to free rota tion is met by the condition that the two planet systems must revolve in opposite directions during the planetary travel. As the two planet systems are geared together, they can not rotate in the same direction. It follows that as the pulley D rotates the two planet systems practically locked together act as dogs, tending to drag the gears E and H around and compel them to partake of the same rotation as the pulley l). 'Under such circumstances the two gears E and'H will rotate as'fast as the pulley D, and the gear E being fast onshaftB will rotate that shaft, and the gear H will transmit motion to the shaft C through the medium of the sprocketgears J and l and the belt/L. Under these conditions the two shafts/ l5 and C will be driven at the same speed as the pulley D, and the planetary system would be acting merely as a driving-dog. New, however, assume that some extraordinary resistance were offered to the rotation of the shaft B. Assume that it were even absolutely locked against rotation.l Now, when pulley D rotates the pinion G is forced into rotation by its engagement with the then stationary gear E. `The pinion G, gearing with the pinion N, transmits rot-ary motion to planet-spindle M, and thence to the pinion P, which causes rotation of gear H and ultimately of shaft C. By'analyzing the resultant ve1oeity it will be found that the shaft'Cwll re volve at twice the speed of pulley D. Briefly, rotary motion having been suppressed'in shaft B, all of the rotation becomes transmitted to shaft C. lf, instead of assuming absolute nonrotation of shaft B, we assume such a re sistance as will permit of slow rotation, then we will find both shafts B and C revolving at speeds inversely proportionate to the resistance which they offer to rotation. rlherefore, if both shafts are operating winding-spindles they will peform the winding with equal force, and if the weight of one of the winding-spindles becomes increased over the other the second spindle will increase its speed of rotation, while the first one slackens its speed, thus equalizing the winding strains. If one we b of paper being wound should become accidentally or intentionally broken, then the winding strain will be imposed entirely upon the second winding-spindle, and under these conditions the second windingspindle will cease to rotate and the first windingspindle will. rotate with great rapidity, no winding of course being done under such conditions by' reason of the fact that the spindle connected with the paper does not rotate and-the one that docs all of the rotating has no connection with the paper.

In Fig. 1 it should be observed that pinion G is a mere idle-pinion, serving to transmit motion between pinion N and gear E and to properly change the direction of motion. It is therefore immaterial whether planet-spindle F is fast in its pinion and loose in its bearings or whether it is a mere fixed stud on which the pinion G may loosely rotate.

It was shown in a hypothetical case above given that if pinions G and l?, engaging gears E and H, as in Fig. 1, were both fast on one planet-spindle the device would be inopera tive. Employing pinion G as a mere idle-.pin i011 to reverse the direction of motion effects,

at once, changes in the character of the device,

and any equivalent system ofgearing introduced between gear E and the spindle of pinion l. will produce the same effect. An equivalent is shown in Fig. 4, in which a sprocketwheel, Q, takes the place of gear E, sprocket pinion It takes the place of pinion N, and chain belt S takes theplace of idle-pinion G, the effect of the transmission and reversion of matters being precisely the saine, while sprocketaud-chain gearing is a welbknown substitute for toothed gearing. Other well-known equivalent gearing may also be used instead of chain-gearing for transmitting motion from gear H to shaft C.

We claim as our invention In mechanism for transmittingmotion, the combination, substantially as set forth, of two parallel rotary shafts, B and C, a pulley loose on shaft B, two gears upon shaft B, one loose and one tight thereon, means for transmitting rotary motion from the loose one of said gears to said shaft C, a planet-spindle journaled in said pulley, a pinionon one end of saidplan- IOC) IIC

in one direction and the other of said gears tends to resist such rotation.

LINUS P. CLAWSON. JOHN A. KELLER.

etz-spindle gearing with one of said gears on shaft B, and gearing connecting the other end of said planet-spindle with the other of said gears on shaft B in such manner that the mo- 5 tion effects are reversed at the two ends of I! JAMES W. SEE. said planet-splindle, whereby when said pnlv ley rotates on shaft B one gear on shaft B tends to urge the planet-spindle into rotation t Witnesses:

ED. HELWIG, Ww A. SEWARD.

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