US1476766A

US1476766A - Power-transmitting mechanism

Info

Publication number: US1476766A
Application number: US580998A
Authority: US
Inventors: Gratton S Reynolds
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-08-10
Filing date: 1922-08-10
Publication date: 1923-12-11
Anticipated expiration: 1940-12-11

Description

Dec. 11 1923. 1,476,766

G. S. REYNOLDS v POWER TRANSMITTING MECHANISM Fild Aug. 10. 1922 1 2 Sheets-Sheet 1 1 FIG. 2

XIVENTOR ATTORNEY Dec. 11, 1923. 6 1,476,766

G. S. REYNOLDS POWER TRANSMITTING MECHANISM Filed Aug. 10 1-922 2 Sheets-Sheet 2 FIG. 4 FIB- I %md2/E T6R, I

ATTORNEY ing material Patented fies. 11, i223.

GRATTON S. REYNOLDS, OF TARENTUM, PENNSYLVANIA.

POWER-TRANSMITTING MECHANISM.

Application filed August '10, 1922. Serial'Np. 580,998. 2

To all whom 2'25 may concern:

Be it'known that I, GnAT'roN S. REYN- onns, a citizen of the United States, residing at Tarentum, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Power-Transmitting Mechanism, of which the following'is a specification.

This invention is for a power transmitting mechanism, and relates to a device for imparting an intermittent movement to a driven shaft from a driving shaft. 7

Devices ofthis kind are adapted for a wide range of machines, particularly those machines having a feeding mechanism associated therewith, where the feeding device is driven from the machine, and the device is used in transferring proper motion to the feeding devicefroni the machine. An example, for instance, is a crushing mill having an automatic conveyor for supplythereto in proper amount relatively to the capacity of the crusher, the in vention being utilized to give the desired ratio of movement between a driven shaft and a driving shaft for the conveyor. The primary object of my invention is to provide an intermittent feed of this kind of extremely simple construction, which is positive in its operation and which is strong and durable. Other important objects are to provide means for regulating or varying the distance the driven shaft is rotated and for providing a safety device including-a yieldable'means for preventing damage to parts in the event of the driven shaft be coming jammed, for any reason.

The'invention may be readily understood by reference to the accompanying drawings, in which:

Fig. l is a side elevation of the device, showing the parts in operating position; Fig. 2 is an end View of Fig. l, with part of the device shown in'sectiong Fig. 3 is a detail view'showing a plan view of a crank on the driving shaft;

Fig. 4 is a view similar to in the parts in inoperative position,

Tig. 5 is an end view of the mechanism, as shown in Fig. 4; and

F igl 6 is a front view of the crank. In the drawings, 5 indicates a driving shaft whichis coupled with any suitable machine, not shown, andwhich, in most incontinuously rotating Fig. 1, showtudinally thereon stances, operates at a relatively high speed. On the end is a crank and cam structure,

6 having a hub 7 on which is formed'a cam 8 and a circular portion 9 having a radial arm 10 formed thereon. The arm 10 has a T-slot lltherein, extending from its outer end inwardly toward the center. At each side of this slot,

Having its head iii the T-slot, is a bolt 13 which is eccentric to the shaft and which may be moved toward or away from the center in the T-slot. Surrounding the shank of this bolt is a sleeve 14 having a head portion 15 in which are teeth adapted to mesh with teeth 12 on the crank. This sleeve is held in position by nut 16 and washer 17 on the end of the projecting outer end of the bolt. By means of the toothed head 15 on sleeve let'cooperating with the teeth"l2, the bolt may be adjustably clamped the desired distance from the center of the shaft'5.

Journalled about the sleeve 14 is the end portion 18 of a connecting link 19. The connecting link 19 has a removable head 20 secured thereon. Slidable on the link, below the head, is an exteriorly threaded nut 21, and interposedbetween the nut and the head is a compression spring 22. The upper end of the link is slidably retained in a cylinder 23, into the bottom or outer end of whichis screwed the nut'21, to hold spring 22 in place, preferably under some compression. Normally, the head 20 of the link abuts against the end of thecylind'er chamber, or an abutment therein, as shown in Fig. 2. i V

Extendingupwardly from the other end of The driven shaft is designated 26. Keyed thereto is a wheel 27 having an annularly toothed face 28, the teeth of which are pref erably relatively open or far apart and 'have straight vertical faces on-fone side thereof and inclined faces on theother, the tops of the teeth preferably being flat. Loose on theshaft 26 and slidable longiis a second clutch member or wheel 30 having a relatively long chub 31 and a disk'portio-n 32 having teeth 32 on the face thereofwhich is opposite-wheel 27. These teeth are shaped similarly to those of wheel 27, and are adapted to cooperate On that face of the disk which.

therewith.

arecorrug'ations or teeth 12. i

the cylinder is a rod portion 24 having an eye 25 on its upper end.

preferably comprising an integral casting 4L, inwhich position they remain until the roller 43, which is disposed in space between cani8 and disk f and against the action of spring isnot toothed is an ear 33 and on the periphery of'the disk is alug A bolt 35 passing through ear 33 and lug 3e is also passed through eye on rod 24, whereby the cylinder isconnected with the disk.

Abutting against the end of hub. 31 is av compression spring 36,

held in compression by a collar 37 fixed against longitudinal movement on the shaft. This spring urges the wheel into engagement with wheel 27. Pivoted betweenits ends to a fixed bracket by means of bolt. 4L0 passing through'it, is a lever 11 having a feather or separable collar v42, at its upper end engaging an amin lar groove inthe hub 31 of'wheel 30. The

lower end of the lever is provided with a suitable cam engaging means, such as a the annular 9 of member 6.

In operation, shaft 5 is continuously rotated. Due to the crank pin provided by the'bolt and sleeve construction-being eccena tric, a reciprocable movement is imparted to link 19. This movement is transmitted when the link 19 moves downwardly through spring 22 to cylinder 23. the spring being suiiiciently stiff to resist yielding under normal conditions. Upward movement of link 19 raises cylinder 23 by reason of the head abutting against the end wall of the cylinde r.

as rod 24 is pulled dow nwardly, wheel 30 rotates w heel 24 in a corresponding direction.

Just after the crank pin reaches its'lowermost position, cam '8, engaging roller 43,

rocks the lever on its pivot 41 in a direction to, withdraw wheel through feather 49..

from operative engagement with wheel 27 parts are then in the position shown in Fig,

crank pin begins its .ne-Xt'dow-nward arc of movement. Thus, while shaft 5, continuously rotates,

' oscillated, the wheel 27'. and consequently toward or awayfro-m theshaft- 26, is moved in one direction only, andonly through a cessive movement. V

By suitable adjustment of the crank pin the center of the shaft, the movement ofthe shaft 26 with each rotation of shaft 5 may be varied. The teeth 12 on the crank preferably bear a certain known relation to the teeth on the wheels 2-7 The and wheel 30 is continuously limited arc at each -suc and 30, so that the teeth of these two wheels will always move into mesh at the proper time.

If, for any reason,'the resistance offered to the rotation of tel-mined maximum, the spring LZQ will yield, 'allowinga relative movement between link 19 and cylinder 23. This will allow the shaft .5 to continue to rotate without being subjected todamaging strains in the event of the load on shaft .26 becoming too great, or. in the event of shaft 26 becoming jammed;

shaft 26 exceeds a prede-.

i in order to providea manual. control,

which will enable shaft driving shaft 26', I provide a hand lever a5 pivoted on bolt v4:0 and havingan angular arm 46- thereon in which is a laterally projecting pin 47. WVhen lever. L5 is pulled down, pin tacting with lever 41 above itspivot point, thereby holding wheel 30 out of operative 5 to rotate without V a7 is swung through an arc, conposition against the compression of spring. 7

By referring to Figs. 1 and seen that the sleeve 14: of the crank pin construction is of sufficient length to enable end portion 18 of link 19 to slide tlierealong' with. the sliding movement of wheel30.

Niththe parts arranged as shown in the drawings, shafts 5 and 26 are rotated in the same direction By reversing the wheels on the shaft 26, that shaft may reverse direction. Various changes may tailed construction tion, and within the sCope oflthe appended claims.

What I claim is l v 1. A power transmission device compris= inga driving shaft, a driven shaft, a pair of wheels on the driven shaft having their op} posed faces providedwith one of said wheels being and the other wheel being keyed thereto,

one of. said wheels being reciprocable on the be made in the deand arrangement of; parts within the contemplation of my invenhe driven in a its inter-fitting teeth, free on the shaft shaft into and out of operative engagement with theother, means for imparting anoscil V j latory movement from said driving shaft to said free wheel,; and] means H means on the driving shaft for effecting the reciprocation of said reciprocable wheel, whereby said wheels are in operative engage inent during'a portio io'nly of the oscillatory.

travel of said free wheel. V a p 2. A powerltransmission device comprising a driving. shaft, a driven shaft, a clutch on said driven shaft reciprocable 'longitudi nally of the shaft into and out of operative a crank on the driving shaft, means for'connecting the crank and clutch member l position,

for imparting an oscillating movement operated by thereto, means driven fromv the driving shaft for reciprocating said clutch member whereby it will be in operative position throughout a portion only of its oscillatory travel, and adjustable means for varying the oscillatory movement of said clutch member to vary the rotative movement imparted to the driven shaft with each cycle of oscillation of the clutch member.

3. A power transmission device including a driving shaft, a driven shaft, cooperating wheels on said driven shaft, one of which is movable longitudinally into and out of engagement with the other, one of said wheels being keyed to the shaft and the other one being free thereon, a crank on the driving shaft, means connecting the crank and the free wheel on the driven shaft, whereby an oscillatory motion is imparted to said wheel upon rotation of the driving shaft, a cam on the driving shaft, a lever reciprocated by the rotation of said cam, and means on said lever for efiecting a reciprocable movement of the longitudinal movable wh el, whereby said wheels are in cooperative relation during a portion only of the oscillatory movement of the free wheel. i

t. A power transmission device including a driving shaft, a driven shaft, cooperating wheels on said driven shaft, one of which is.

movable longitudinally into and out of engagement with the other, one of said wheels being keyed to the shaft and the other one being free thereon, a crank on the driving shaft, means connecting the crank and the free wheel on the driven shaft, whereby an oscillatory motion is imparted to said wheel upon rotation of the driving shaft, a cam on the driving shaft, a lever reciprocated by a driving shaft, a driven shaft, cooperating driven shaft, one of which is wheels on said movable longitudinally into and out of engagement with the other, one of said wheels being keyed to the shaft and theother one being free thereon, a crank on the driving shaft, means connecting thecrank and the free wheel on the driven shaft, whereby an oscillatory motion is imparted to said Wheel upon rotation of the driving shaft, a cam wheels out on the driving shaft, a lever reciprocated by the rotation of said cam, and means on said lever for effecting a reciprocable movement of the longitudinal movable Wheel, whereby said wheels are in cooperative relation dur-. ing a portion only of the oscillatory movement of the free Wheel, said connecting means including a yieldable connection arranged to yield when the wheels are in cooperative relation when the driven shaft en counters a predetermined maximum resistance against rotation. i V Intestimony whereof I hereunto afiix my signature.

GRATTON S. REYNOLDS,