US729384A - Stop-motion for spinning. - Google Patents

Description

No. 729,384. 7 Q PATENTED MAY 26, 1903.

W. G. MORRISON.

- STOP MOTION FOR SPINNING. APPVLIOATION FILED SEPT. 2. 1896.

NO MODEL.

UNITE STATES Patented May 26, 1903' PATENT OFFICE.

WALTER MORRISON, OF WILLIMANTIC, CONNECTICUT; HUBER CLARK, ADMINISTRATOR OF SAID MORRISON, DECEASED, ASSIGNOR TO THE ATWOOD-MORRISON COMPANY, OF STONINGTON, CONNECTICUT, A COR- PORATION OF JERSEY.

STOP-MOTION FOR SPINNING.

SPECIFICATION formingpart of Letters Patent No. 729,384, dated May 26, 1903.

Application filed September 2, 1896. Serial No. 604,637. (No model.)

To aZZ whom it may concern:

Be it known that I, WALTER G. .MORRISON, a citizen of the United States, and a resident of Willimantic, in the county of Windham and State of Connecticut, have invented certain new and useful Improvements in Stop- Motions for Spinning-Frames,"of which the following is a full, clear, and exact description, whereby any one skilled in the art can to make and use the same.

Myinvention relates to the class of devices used in spinning-frames for automatically stopping the winding operation when for any reason a strand or thread shall be broken;

and the object of my inventionis to provide a device of this class that shall be positive in operation, that will respond quickly upon the breaking of a thread, and that shall preserve an even tension upon the threads being wound, the device providing means whereby the supply of thread being wound is cut off rather than by the stopping of any of the running parts of the machinery.

Referring to the drawings, Figure 1 is a 2 5 detail diagram view, in side elevation, of parts of a spinning-machine and showing the relative location of my improved stop-motion de vice. Fig. 2 is a detail diagram view, in front elevation, .of parts of a spinning-machine,

showing my improvement. Fig. 3 is a detail bottom view of the stop-motion device. Fig. 4 is a detail side view of the stop-motion device shown in position to stop the winding operation. Fig. 5 is a detail view showing in front and side elevation drop-wires and illus-- trating the method of securing them to the foot.

In the accompanying drawings the numeral 1 denotes supply-bobbins mounted on the blade of a spindle 2 and from which thread 3, as silk, is supplied to the bobbin 4, upon which it is wound',,thethread passing through the thread-guide 5. This thread-guide is mounted on a reciprocating thread-guide rail 4 5 in a manner well known to this class of machines, and further description is deemed unnecessary. I My improved device is especially applicable in the twisting and doubling of silk threads motion therefrom by frictional contact. This eccentric is operatively connected to abellcrank lever S, mounted on a pivot '7, the opposite end ofthelever bearing a stud 9, to

which is connected a drag 10.

In spinning-machines in connection with which my device is readily adapted the spindles are arranged in groups placed close together, the threads from each spindle of a group being wound on a single bobbin. In devices used on spinning-machines of this class where the rotation of the receiving-bobbin ceases in the operation of the stop device a difficulty occurs from the fact that the loose ends of the light thread beingwound float about in the currents of air caused by the' revolutions of the spindles or like parts, and

become entangled therein or adhere to other threads, causing the breaking of other strands of thread, and this will continue for a considerable distance along a spinnin g-frame before the operative has time to take up the loose ends or stop the machine. In my improved device I have overcome this difficulty by continuing the rotation of the receiving-bobbin, thereby Winding up all loose ends. In this operation, however, it has been found necessary to break the remaining strands that are wound into a singlethread on a bobbin in order to prevent the winding of imperfect threads.

A frame consisting of upward-projecting side parts 11, downward-proj ecting side parts 12, and forward-projecting side parts 13 is mounted underneath the bobbin 4:. A triplever 14 is pivoted between the forward-projecting side parts 13, and a drop-wire 15, appurtenant to each spindle in the group, is pivoted on said lever. Each drop-wire is secured to afoot 16, projecting therefrom at an angle preferably horizontally, the weight of this foot being sufficient to swing each of the dropwires backward when not supported in an upright position. A rocking lever 17 is pivoted between the downward-projecting side parts 2 of the frame and is connected by a link 18 with the trip-lever 14. .This rocking lever 17 is provided with cam-surfaces 19, each located at an angle with the other, and a spring 20, secured to the frame, bears against these camsurfaces. 'lhread-engaging arms 21 project forward from the rocking lever in a position to engage the threads from the supply-bobbin, one of these arms being provided appurtenant to each spindle from which thread is being supplied. The spring 20 is provided for the purpose of causing the rocking lever 17 to operate with some force after a certain degree of movement has been imparted to the device by means of engagement of the drag 10 with a foot 16, the spring bearing with considerable force against oneor the other flat cam-surfaces 19 and causing rotation of the parts under the impulse of the spring after the drag has ceased to operate thereon.

The operation of the device is as follows: The parts being in the relative position shown in Figs. 1, 2, and of the drawings, with the thread 3 projecting upward through eyelets in the thread-engaging arms 21 and in engagement with the ends of the drop-wires 15, as the drag 10 is reciproeated by the eccentric 22 the drag escapes contact with the foot portion 16 of the drop-wire. \Vhen a thread breaks for any reason, the drop-wire is tipped backward by the weight of the foot 16 into the path of movement of the drag 10, the drop-wire engaging a fixed stop on the ten sion-lever. As the drag encounters the foot of the drop-wire the trip-lever is rocked on its pivot, and, through means of the connecting-link 1S, throws the threadengaging arms 21 on the rocking lever 17 downward and backward, which movement is accelerated as the spring 20 comes in contact with the next cam-surface on the rocking lever. This breaks the remaining thread or threads from the group of spindles, and the ends are immediately wound upon the bobbin 1 until such time as the operative shall take up the ends and start the machine in operation.

It is obvious that a single eccentric device may be used for operating a number of the stop motion devices appurtenant to each group of spindles, the upper branch of the bell-crank lever in this instance being attached to the pivot 7 and arms extending downward therefrom appurtenant to each of the stop-motion devices. The drags may exthe foot 16.

custom to secure the drop-wire to the foot in the process of casting, but this necessitated the removal of the foot from the machine and the substitution of a new one. By my improved method of attachment the wire can be easily and quickly removed from the foot with the latter in place and a new one substituted at any time when needed. A groove 23 is formed lengthwise along the upright arm of the foot, into which the shank of the dropwire 15 is inserted. The wire maybe held in this groove by any desired means, the side parts of the groove preventing the wire from moving sidewise. In the preferred form of the device a hole 24 is made through the upright arm of the foot portion 16, the lower end of the wire inserted within this hole and then bent backward, resting against the back of the upright portion of the foot. The backturned portion of the wire prevents it from being forced out of the groove and the side walls of the groove prevent any sidewise movement. This manner of attachment of the drop-wire provides an inexpensive means of attachment and one in which a wire may be readily removed and replaced by a new one.

I claim as my invention- 1. In combination in a spinning-frame, a plural number of spindles adapted to receive supply-bobbins, a drop-wire arranged to engage a thread from each of said bobbins, thread-engaging arms to engage each thread from a set of bobbins, each of said armsbeing' mounted on a common swinging support, and means adapted to be connected with the dropwires for swinging said support to simultaneously snap all the threads common to a set of bobbins.

2. In combination in a spinning-frame, a plural number of spindles adapted to receive supply-bobbins, drop-wires arranged to engage threads from said bobbins, thread-engagin arms to receive each thread from a set of bobbins, said arms being mounted on a common swinging support, and means set in operation by the drop-wire on failure of the thread for forcibly swinging said support to simultaneously break all of the threads.

3. In a spinning-frame, in combination with a number of spindles adapted to receive supply-bobbins, a drop-wire appurtenant to each of the threads, thread-en gaging means appurtenant to each drop-wire, means for initially moving the thread engaging means, and means for forcibly moving said means to snap all of the threads on the breaking of a single thread.

4. In combination, a base having a lengthwise groove, and an opening through the base depthwise of the groove, a drop-wire with its shank located in the groove, and with its end projecting through the opening and backturned along the base.

WALTER G. MORRISON.

Vitnesses:

HUBER CLARK, HENRY F. PARKER.

IIO

Images