US291471A - dennis - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

. E. P. DENNIS. v MECHANISM FOR STRIPPING'THE PLA TS'OF GARDING ENGINES" No. 291,471. Patented Jan. 1, 1-884.

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2 SheetsSheet 2.

(No Model.)

E. P. DENNIS.

MECHANISM FOR STRIPPING THE FLATS OF GARDING ENGINES.

N 291.471. Patented Jan. 1, 1884.

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UNITED "STATES ED-WARD r n ENNIS, or LO ELL, MASSAGHUSETTS, ASSlGfiOR o HALF o J. smuDL on S ME rLAoE.

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SPECIFICATION forming part ofLetters Patent No. 291,471, dated January 1, Application filed January 15,1883. (No model.)

Jo all whom it may concern:

Be it knownthat I, EDWARD P. DENNIS, of Lowell, county of Middlesex, State of Mas- .sachusetts, have invented an Improvement in Mechanism for Stripping the Flats of Oarding- Engines, of which the following'deseription, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to means for intermittingly imparting fast and slow motion to the flatstripping mechanism whereby the cam which actuates the arms carrying the strippercard is automatically moved at a faster rate of speedwhile the said strippercard is operating to stripa raised fiat.

My invention is an improvement on what is commonly known as the Wellman Stripper for carding-machines. In such machinesthe axis )Of the main cylinder is driven by a belt running from one line of shafting, and the railway 1 head, doffer, and feed rollers are driven froma different line of shafting. This intermitting fast and slow motion of the said cam-gear has been produced in different ways. Inone instance, as in United States Patent No. 244,546, the belt which drives the stripping mechanism and the said cam forming a part of it, has been shifted from theslow-speedpulley,

o loose withrelation to the shaft of the main cylinder, l upon a fast speed pulley secured to theouter end of the shaft of the main cylinder, and vice versa; but such plan is objectionable becauseboth the said pulleys always move andfcontinue to operate the stripping mechanism as long as'the main cylinder is rotated, notwithstanding the feed-rollers and doffcr ,may have been stopped. Should the feedrollers be stopped for any cause, the stripping mechanism shouldalso stop as soon as the topflat then being stripped has been seated on tlie arch In another plan, toincrease the speed ofthe said cam, the short belt which drives the stripping mechanism has been jshiftedoutward at proper times from a loose slow-moving ,pulley driven from the shafting which actuates the feed-rollers anddoffer upon the fast-speed pulleysecured to the outer end of the shaft of the nfaincylinder; but in such plan, if for any reason the feed-rollers and shifted upon a pulley temporarily held fastby doffer are stopped while the fast-speed pulley is operative, the short belt of the'stripping mechanism, when shifted back from the moving fast-speed pulley, will, it will-be seen, be

reason of the stoppage of the feed-rollersan d doffer, and the belt and parts will be excessively strained. In the plan first referred 'to the fast and slow speed pulleys are so placed side by side that the loose pulley is always loose and the belt is Shifted from. one to the other without strain. r A

To overcome the difficulties experienced in thetwo plans referred to, I have secured the high-speed pulley on the main shaft of the carding-cylinder nearest the end of the said cylinder, and have placedthe slow-speed loose pulley outside of it, nearer the outer end of the shaft of the main cylinder, thus giving itthe position heretofore occupied-by the fast highspeed pulley in the plans referred to. The loose slow-speed pulley is chambered at its outer side and provided with a toothed ratch et, to be engaged by the pawls of a disk placed loosely on the hub of the loose pulley, and the said disk, provided with an elongated hub, is driven by a belt extended over it and over a pulley onthe shaft of one of the feed-rollers, and as the disk is driven its teeth engage the toothed ratchet fast on the looseslow-speed pulley and drive it a slower speed than that of thehigh-speed pulley alongside of itand secured to the main shaft of the cylinder. The said fast and loose pulleys receive the usual short belt which drives the stripping mechanism, as in the patent referred to, and

the said belt, when it is to be shifted from the hi gh-speed fast pulley, is moved laterally upon a loose pulley, which latter travels at thespeed of the belt being-shifted so long as the belt re mains in contact with the high'speed pulley,

1111610056 pulley traveling and, moving with the said belt, but at a higher speed than that normally imparted to it by the pawl-carrying disk, the ratchet-teeth of the said l-oose pulley running forward at such time at a faster speed under the pawls of the said disk and inthe direction of the movement of thelatter. Should the feed-rollers be stopped, the loose pulley will not be temporarily held fast, as in the plan referred to, but will remain loose to be run forward independently of the loose drivin gdisk, the rotation of which, with its pawls, is at such time arrested, and consequently I avoid all jar or strain when shifting the belt.

Figure 1 represents in side elevation, par-- 1 tially broken out, a sufficient portion of a card ing-machine to enable my invention to be unat each end of the main cylinder-and each arm is moved by a cam like that marked B These cams B are moved in customary manand feed it to the main cylinder.

her by the usual gear, a b c, the gear a being on a shaft provided with the belt-pulley (I, over which is extended the usual belt, 6, controlledas to its position by a belt-shipper, e",

actuated by a cam, J, substantially as in the patent referred to, where the like cam is designated by the same letter. The shaft of the main cylinder has on. it at one end a pulley,

(shown in dotted lines, Fig. 1,) over which is passed the belt f, which rotates the main cylinder and the high-speed pulley 72, fast thereon.

(See Fig. 2.)

The shaft 9, driven from or in unison with the usual railway apparatus, has a pulley, g,

which, by belt drives pulley g on shaft 2,

and by gears g 9 drives the shaft 9, which in practice will carry the usual doffer. The shaft 2 has a bevel-gear, m, which engages bevel-gear m on the shaft m having at its other end a bevel-gear, m, which engages a bevel-gear, W, on a short shaft, 3, having a connected pinion, n, which engages a toothed gear, a, fast on the shaft a, of the usual under feed-roller of the pair of feed-rollers, which take the cotton from the usual lap or roll L The. shaft n has 'on it a belt-pulley, a", which drives the belt a extended over the hub 19 of the disk r, placed loosely on the hub s of the slow-speed pulley s, loose on the main shaft A. (See Fig. 2.) The disk 1' has, as herein shown, a series of pawls, 1", some of which normally engage the teeth of the ratchet disk or plate 15, attached by screws 4 to the loose pulley 8 within its *that ef the high-speed pulley h, fast on the main shaft A".

The pulley s isalways free to turn in the direction of the arrow 6, (see Fig. 1,) notwithder the pawlsr.

standing the disk 1*, belt a, and shafts n and m have been stopped, and when the pulley s is driven by the belt a its speed is less than that of the pulley h, so that the belt e, whenever shifted from the hi gh-speed pulley h upon the loose pulley, acts to carry the said loose pulley with it at the speed of the said belt, and that irrespective of the fact thatthe disk 1" is moving or stationary, as under both conditions the loose pulley will be taken up and moved by the belt 6, and at its increased speed its ratchet-teeth will run ahead of and slip un- The belt a and disk r having been stopped, and a top-fiat having been stripped and returned to its seat on the usual arch, the cams B and J will have shifted the belt 6 wholly upon the loose pulley s, when further movement of the stripping mechanism the cardingcylinder may be continued in motion.

- By employing a loose pulley and disk and pawl and ratchet, as described, it is possible to turn the belt by hand and operate the shipping mechanism while the feed-rollers and doffer are at rest.

I claim 1. The combination, substantially as here- 'inbefore set forth, with the main shaft A the will cease, notwithstanding the main shaft of pulley h fast on the shaft A the slow-speed pulley 8 outside of it and loose on the said shaft, the ratchet-plate rotating with said slow pulley, the loose disk and its pawls, and means to rotate the said disk independently of the main shaft, as and for the purpose set forth.

2. The shaft 16* of the feed-roller, belt-pulley thereon, belt 11*, actuated by it, and the pawl-carrying disk driven by the said belt,

the shaft A and the slow-speed loose pulley and its ratchet, combined with the high-speed fast pulley, the belt 6, belt-shipper, and means to actuate it, substantially as and for the purpose described.

3. The main shaft A and high-speed fast pulley thereon, combined with a slow-speed loose pulley placed at the side of it, the ratchet wheel attached to the said pulley, and the loose disk provided with a series of pawls, and means to rotate the said disk at a speed slower than that of the high-speed pulley, and a belt-shipper and belt whereby when the said belt is shifted from the high to the slow speed pulley the latter pulley is moved at a speed corresponding with that of the belt, and its ratchet-teeth are moved forward under the teeth of the said pawls irrespective of the movement of the said disk, substantially as and for the purposeset forth.

4. The shaft A means to move it, thepulley h fast thereon, the pulley s loose thereon, the disk 0, loose with relation to the said shaft and the said loose pulley, means between the said loose pulley and disk to permit the said disk to turn the said pulley with it in one loose pulley moves the latter at a speed faster than the speed of the said loose pulley derived IO from the said disk.

- In testimony whereof I havesigned my name a to this specification in the presence of two subscribing witnesses.

EDXVARD P. DENNIS.

XVitnesses:

JOHN H. CAVERLY, HENRY A. ROACH.

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