US244538A - Stop motion mechanism foe winding ans twisting machines - Google Patents

Description

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s'TofP-MOTIONMBGHANISM PoR WIND-11m YMID'TwsTING MAoHINEs,'-&G; No. 244,538. Patented July 119 1881.

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J. BOYD. STOP MOTION MBOHANISM FOR WINNING AND TWISTING MACHINES, 6m. No, 244,538.

Patented July 19, 1881.-

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UNITED STATES PATENT OFFICE.

JOHN BOYD, OF GLASGOW, SCOTLAND. y

vSTOP-MOTION MECHANISM FOR WlNDlNG AND TWISTING MACHINES, &c.

SPECIFICATION forming part of Letters Patent No. 244,538, dated July 19, 1881.

Application iiledNoyember 30, 1880. (No model.) Patented in England duly 21, 1879.

To all whom it may concern:

Be it known that I, JOHN BOYD, a subject of the'Queeu of Great Britain and Ireland, re',- siding in Glasgow, Scotland, have invented cer.-

tain Improvements in Stop -Motion Mechanism for Winding and Twistin g Machines, Ste., (patented in England July 2l-A. D. 1879, N o. 2,953,) of which the following is a specification.

My invention `relates to stop-motions .for

1.o twisting and winding machines and other Inachines of analogous character; and the main feature of my invention consists in so constructing the machine that the tube or spindle carrying the bobbin is made to controla stop-motion trigger, another 'prominent feature of my invention consisting of mechanism, described hereinafter, for elevating the upper feed-roller above the driven rollers, and forl seizing 'the .threads in obedience to the action of. a'trigger or triggers on the breakage or failure of one or more of the threads.

Other features of my vinvention are too fully explained hereinafter to need preliminary description; q f i' '2 5 Figurel, Sheet 1, is averticalsectionof sufeient of a winding and twisting machine to give a general'view of my improvements ,"Fi gs. 2 and 3, Sheet 2, an ,enlarged vertical section of part of Fig. 1,A showing some of the operating parts in different positions; Fig. 4, Sheet 3, a perspective view of Fig. 3 5 Fig. 5, a detached view of part of Figf; Fig. 6, a detached view of part of Figs. 2 and 3,' and Fig. 7 a view vof a modification.

, The lend frames, A, of the machine are conneeted together by longitudinal rails B, B', B2, and B3, as in other |machines of the class to which my invention relates, O being one of the winding-spindles driven from a pulley or drum,

4o F, 4on the driving-shaft G by a band, D, which passes round a grooved pulley on the said spindie, the latter being provided with an ordinary hier, a, fortwisting the yarn and directing it to the bobbin c, which rests on the lifting-rail b,

There are in the present instance four threads to be twisted and wound, these threads being derived from'as manybobbins, which are shown most clearly in Figs. 2 andB. j Each bobbin H Vlits snugly, but so as to turn freely, on a tube,

5e h, Fig. 2, andrests .on a carrier,I,' intowhich the tube` is tightly tted, both tube and carrier being supported by a xed spindle, J, the apex of which is adapted to a recess in a lilling-piece fitted into the upper portion of the tube, the fixed spindle being carried by a bracket, K, on 5 5 the under side of a board, L, secured. to the rail B of the machine. From each carrier I, beneath the board L, projects a short arm, f, connected by a cord, f', to an arm, h', of the trigger M, which will be more particularly Ie- 6o ferred to hereinafter. The weight of the arm i of the said trigger is slightly in excess of that of the arm j, which is provided with an adjustable counter-balance for insuring this preponderance of the arm z'. From the carrier above 65 the'board L'projects an arm or crank, k, having averticalpin, 7c', against which the thread bears, the tension on the thread bein g so exerted on the arm that it tends to turn the carrier and to maintain the triggerin the'position shown 7o in Fig. 2. The perspective view, Fig. 6, illustrates` the manner of limiting the movement o 'the carrier by stops on'the bracket.

In machines in which the bobbins turn at a high speed, or where there is friction enough 7 5 of the bobbin on'the carrier, the crank-pins may be-dispensed with and the cord simply coiled round the tube or a spindle adapted to bearings.

i The threadsv from the four bobbins pass 8o through an eye, g, thence over the feed-rollers N N and beneath the upper feed-roller, P, to the hier, by which they are twisted and wound round the bobbin c.

The feed-rollers N-N have journals adapted 8 5 to bearings on the frame, as usual, and are driven from the shaft G through the medium of appropriate gearing, as indicated by dotted lines lin Fig. 1, and hereinafter .referred to.

The upper roller, P, (best observed in Fig. 9o 5,) is supported by the rollers NN', and by its weight presses the four threads .against these rollers as long as all the four threads remain unbroken; but when any one or more of these threads is broken or fails arod, Q, owing to mechanism explained hereinafter, willinstantly rise and elevate the roller l?, which will be supported by a concave plate, m, on the upper end of the rod, all the,threads beillfg then grasped and confined between the plate and roo the roller.

Y Referring to Fig. 5, it will be noticed that a grooved journal, p', projects from one end of the roller l?, and that a slotted plate, m', secured to the rod Q, is adapted to the groove of this journal, the object of this plate being to maintain the rollerl? in its proper position. The vertical rod Q passes through andis guided by the rail B of the frame, andis connected at its lower end to a lever, R, which is pivoted to a bracket, n, secured to the rail B2, this lever being so weighted that, under the circumstances explained hereinafter it will raise the rod Q and perform the functions described above.

It will be understood that there is a trigger,

M, for each thread, and hence that there are in the present instance four triggers for one set of four bobbins. The four triggers are pivoted independently of each other to a springbolt,S,whicl1 passes through and is guided by the rail B of the frame, the peculiar construction of which will be best understood by reference to the perspective view, Fig. 4, Sheet 3. A bent arm, p, projects from the rear of the bolt S, and carries a plate, q,having upwardlyprojecting lugs t, which, with the arm p, form four recesses, and in each recess is pivoted a trigger by a pin common to all four of the trig gers. The movement of the triggers is limited in the direction of the arrow, Fig. 4, by arod, u, and in the opposite direction by the rail B, Fig. 2. A spring, V, contained within a slot in the bolt and confined between one end of the slot and a plate bearing against a flange of the rail B, tends to force the said bolt in the direction of the arrow, and part of this bolt is reduced in thickness, so as to form an inclined shoulder, x, faced with a steel plate, the reduced portion of the bolt passing through a slot, y, Fig.5, iu the vertical bar Q,tl1e rear of this bar having also a steel plate, the upper edge of which is ilush with the bottom of the slot. As long as all the threads continue to unwind from the bobbins, the carriers, by the tension of their threads caused by the friction of the bobbin, will be turned round on their spindles or pivots, and all the triggers will be in the position shown in Fig. 2, the upper feedroller will be supported solely by the rollers N N', and the rod Q will be retained in its depressed condition, owing to the bearing of its steel plate against the under edge of the steel plate on the shoulder w of the bolt S, and the drawing ef all four threads through the feedrollers will continue. The moment one of the threads breaks or fails its bobbin and carrier and trigger, owing to the preponderance of its arm i, will automatically cause the unwinding of the cord on the carrier, and will assume the positions shown in Fig. 3, and the end of the arm will be within range of cam-like projections T' on a shaft, T, which has its bearings on the frame, and which is driven in the direction of the arrow from the drivin g-sllaft through the medium of suitable gearing.

As indicated by dotted lines in Fig.l,a belt passing over a pulley on the shaft G drives a shaft carrying acog-wheel gearing into awheel on the shaft T. The latter imparts motion to the back feed-roller, N', through a pinion on the shaft gearing into a pinion on the roller. The roller N is driven from the roller N' through the medium of an intermediatepinion. (Shown by dotted lines.)

When one of the projections on the shaft strikes the arm i of the trigger the bolt will be pushed back, the rod Q will be released from the control of the bolt, and, influenced by the weighted lever R, will rise and elevate the upper feed-roller, P, as described above. The feeding will consequently be discontinued, and all the threads, including that which was (broken, between its bobbin and feed-rollers,

will be confined between the said roller P and the plate on the top of the rods. When the rod Q rises its steel plate, acting on the in clined steel plate of the bolt, will push thelatter back farther than it was pushed by the projection on the shaft T', so that the trigger will be entirely beyond range of' the projections until the rod Q is depressed.

When it is desired to stop the machine by hand this may be readily done by simply pressing on the projectln g end w of the spring-bolt S so as to release the rod Q.

.After a broken thread has been pieced and the bobbin has been turned until the tension on the thread lifts the trigger, the rollerP and rod Q may be depressed until the former bears on the other rollers and the end of the bolt, owing toits spring, assumes its former' position, Fig. 2.

Instead of mounting each bobbin H on a tube attached to a carrier, the bobbin may be mounted directly on a spindle, h2, adapted to bearings in the frame, and having the cordf', which is connected to the trigger, wound on the spindle by the tension or friction of the yarns or threads, as illustrated in the modification, Fig. 7.

Instead of causing the friction of the bobbin on the tube or spindle to control the stopmotion trigger through the medium of a cord, f', other mechanical devices-such as a lever or cam-may be employed. Any of the ordinary braking appliances may be combined with the rod Q and intervening actuating mechanism for this purpose. I may state, however, that I prefer as a means of stopping the spindle a device which forms the subject of a separate application for a patent filed by me November 30, 1880, serial No. 21,368, and which may be briefly described as follows: When the rod Q rises the cord D, which drives the spindle, is slack, and this cord is griped between a jaw on the lower end of the rod Q and a fixed jaw, so that the motion of the spindle must be arrested; but when the rod Q is depressed a pulley on the lever R will tighten the cord, which will at the same time be released from the jaws.

I do not desire to claim, broadly, in this application the combination of the camshaft, stop-motion trigger, and spring-bolt with a rod or lever which is adapted to be supported by IOC IIO

the saidl bolt, and which, when released, pushes the trigger back out ofthe Way of the rotating cam-shaft, as this combination forms the subjectof a separate application iiled by me April 30, 1880, serial No. 8,753; nor do I desire to claim in this application the special means shown for counterbalancing vthe trigger, as this forms the subject of a separate application filed by myself and T. A. Boyd, May 7, 1880, serial No. 9,180.

I claim as my invention- 1. The combination of winding mechanism,

spindle, and carrier with a stop-motion trigger connected to or operating in connection therewith, said carrier having a crank-pin for the thread to bear against, substantially as specied.

2. lThe combination of winding mechanism and carrier or spindle on which the bobbin is fitted with a stop-motion trigger having an y arm connected by a cord to the said carrier or spindle, all substantially as set forth.

3. The combination of the ixed spindle J, the carrier I, the tube h, tted and secured to the carrier and supported by the spindle, substantially asV described.

4. The combination of the bracket K and spindle with the carrier I and stops on the bracket for limiting the movement of the carrier.

5. The combination of the rollers N N and driving mechanism, the roller P, and a rod,

Q, carrying said roller P, and devices for irnparting an upward tendency to said rod with a stop-motion trigger, and a spring-bolt for retaining and releasing the rod in obedience to the action of said trigger.

6.- The combination of rollers N N and rod Q, having a plate, m, with the roller P, carried by said rod, substantially as described, Whereby on the raising of the said rodthe roller P will rest on said plate m.

7. The combination of the rollers N N and movable rod Q, having a plate, m, and slotted plate m', with the roller P, having a grooved iournal adapted to said slotted plate, as set forth. i'

8. The combination of the frame, rollers N N', and driving mechanism, the roller P, and rod Q, carrying said roller P,and devices for imparting an upward tendency to said rod, with a spring-bolt for retaining the rod, and having an end, w, projecting beyond the frame-rail, as and for the purpose set forth.

In testimony whereof I have signed my name to this speciication in the presence of two subscribin g witnesses.

JOHN BOYD.

Witnesses:

JAnms F. ToBIN, HARRY SMITH.

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