US1428445A - Tensioning device for shuttles - Google Patents

Description

A. R. -MEEKS. TENSIONING DEVICE FOR SHUTTLES. APPLICATION FILED m 12,1922.

1 ,428,445 Patented Sept. 5, 1922.

I I" {ii-IN Patented Sept. 5, 1922.

, lildiilil STATE ARTHUR; H. MEEKS, O1? COLUMBUS, GEORGIA.

TENSIONING; DEVICE SHUTTLES.

Application filed May 12, 1922., Serial No. 560,462.

To all whom it may, concern: I I

Belt known that i, ARTHUR .lt. lvlnnns, a

citizen of the United States, residingat Columbus, in the county of Muscogee and State. of Georgia, have invented certain. new and.

useful Improvements in Tensioning Devices for Shuttles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such: as will enable others skilled in the art to which it appertains to make and use the same. b i

The present invention relates to improvements in tensioning devices for sl'iuttlesjin which the filling strand is led through a spring pressed device as it leaves the bobbin, and before it emerges through the eye of the shuttle whereby to avoid looseness in the filling which results in injury to the cloth, impairing its commercial value.

lln thepresent operation of looms, the filling thread is found to slough off the spool in such wise as to create a tangled mass of the thread in the shuttle. This tangled mass is woven lnto the cloth, and causes unevenness, and often resultsin the breaking of the thread.

An object of the invention is therefore to prevent rapid unwinding of the filling thread from the spool except as it is directly required for proper weaving in the cloth, to accomplish this by arelatively small and compact device admitting of its placement in the shuttle without alteration in the construction thereof and without affecting the movements of the spool or the proper progress of the fillingthread.

Another object of the invention resides in providing a device for the above'purposes which will be inexpensive to make, easy to install, accessible at all times, and effective in its action of placing a check or restraint upon the undue unwinding of the filling thread.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views,

Fig. 1 shows a fragmentary plan view of a shuttle with the improved device mounted therein;

Fig. 2 is a longitudinal section of the same;

Fig, 3 is a side view of the improved tensioning device on an enlarged scale;

F g. 4 1s a front view of the same; and Fig. 5 1s a cross section of the device through the tension arms.

Referring more particularly to the drawmgs, 1 designates a shuttle, a portion of which is illustrated in Figs. 1 and. 2; and 2 represents a. bobbin or spool fitting in the shuttle in' the customary manner, and having wound thereon the filling strand 3..

After passing through the head of the i shuttle the filling strand 3, as indicated in Fig. emerges through the shuttle eye 1, it being drawn out from the spool as the shuttle moves back andforth in the race.

The improved tensioning device is situated within the shuttle adjacent the delivery end of the spool 2, and in a position todirectly receive the filling strand 3.

The improved device consists of a pair of 1 arms 5 and 6 preferably of metahand of a slightly resilient character. The arms are provided with upper free extremities 7 and 8 bent in opposite directions to form flaring jaws for guiding the fill'ing strand down between the arms 5 and 6. If desired the associated arms. Below, the arms are supported by diagonal bases 10 and 11 converging upwardly from the lateral portions 12 and 13, which are joined by a connecting bar 14. The device is provided further with a shank 15, illustrated in Figs. 2, 8 and 4, the same being. elevated above the plane of the connecting bar 14, a web 16 joining these parts together. An opening 1.7 is made in the shank 15 to receive an appropriate fastoning by which the device is secured in the shuttle head.

A coil springlS is fitted between thelateral portions 12 and 13 of the yoke, which portions are situated suitably far apart to receive a spring of the requisite number of turns. A bolt 19 passes axially through the spring 18 and through the lateral parts, while a nut 20 threaded upon the opposite end of the bolt engages adjustably against the outside face of the other lateral yoke dart.

1 Inthe use of the device, the same is mounted in the shuttle as appears in Figs. 1 and 2; whereupon the filling 3 is drawn into contact With the flaring jaws 7 and 8 and guided between the arms 5 and 6. Now the arms and yoke of which they form a part are of resilient metal and the bending of the metal is such as to cause the arms to spring yieldingly together upon the filling and impose the required tension. In this action the arms are resisted by the coil spring 18 tending to open the arms. The nut and bolt adjustment restricts the scope of action of the spring. Thus there are two forces acting in opposite directions upon the arms 5 and 6 which makes them extremely sensitive. This sensi tiveness may be accurately gauged and finely adjusted by the nut 20. The device there fore provides an adjustable tension which. is regulated in accordance with the character of the filling and will avoid the sloughing off of the latter and its massing in the head of the shuttle.

' The shank l5 lies within the shuttle head and is appropriately secured therein, while the web 16 strikes against the head and acts to steady the device and to prevent lateral creeping or casual movement further into the head. The jaws 7 and 8 are also guided in the cut-out portions 9 of the shuttle and the light spring arms are therefore unmoved by the passing of the filling except, of course, the normal opening and closing movement thereof.

' I have illustrated and described a preferred and satisfactory embodiment of my invention, but its is obvious that changes may be made therein within the spirit and scope thereof as defined in the appended claims.

What is claimed is:

1. A tensioning device for shuttles comprising a metallic yoke having substantially parallel arms brought together upon the tilling and having free extremities, the portion of the yoke adjoining the arms being relatively wide, resilient means placed 'in the relatively wide portion of the yoke, and ad justing means also connected with the relatively wide portion of the yoke, substantially as described. p

2. A tensioning device for shuttles comprising a yoke made from a single piece of sheet metal having a relatively broad connecting portion bent to provide lateral parts remote from each other and a pair of filling engaging arms relatively close together and having unconnected free ends, spring means mounted between the relatively wide parts of the yoke member and a tensioning bolt passing through the spring and connecting the relatively wide parts, and a shank also formed in the same piece "from the yoke and extenllii'ig at substantially right angles to the armsand being off-set slightly from the plane of the connecting portion of the yoke.

said shank adapted to receive fastenings for connect1n the device to a shuttle, substantially as described.

ARTHUR 1a. MEEKS.

Images