US660927A - Fringe-pulling device for looms. - Google Patents

Description

No. 660,927 Patented Ot. 30, I900.

v T. nowcnon. FRINGE PULLING DEVICE FOR LOOMS.

(Application filed Mar. 30, 1900.

(No Model.)

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UNITED STATES PATENT OFFIQE THOMAS ROWCROF", OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE STAR AND CRESCENT MILLS COMPANY, OF SAME PLACE.

FRINGE-PULLING DEVICE FOR LOOMS.

SPECIEFICATION forming part of Letters Patent N 0. 660,927, dated October 30, 1900,

Application filed March 30, 1.900. serial No. 10,762. (No model.)

To all whom it may concern:

Be it known that I, THOMAS ROWCROFT, a citizen of the United States, residing in Philadelphia, Pennsylvaniadiave invented certain Improvements in Fringe-Pulling Devices for Looms, of which the following is a specification.

The object of my invention is to provide simple and efficient means whereby a rapid movement of considerable extent maybe automatically imparted to the take-up roll of a loom, so as to draw off warp in quantity sufficient to form a fringe of any desired length, thereby dispensing with the necessity of operating the take-up roll by hand for this purpose and rendering unnecessary any stoppage of the loom or the picking out of the shoots of weft-thread that would be inserted during the drawing of the fringe by hand if the loom was not stopped.

In the accompanying drawings, Figure 1 is aside view of sufficient of a loom to illustrate the application of my invention thereto, the loom-frame being shown by dotted lines; and Figs. 2 and 3 are plan views, on a larger scale, representing in their two difierent positions the parts to which my invention particularly relates.

. The main shaft ofthe loom is represented at 1, and to this shaft is secured a collar or hub 2, said hub having a projecting spindle 3, on which is loosely mounted a sprocketwheel 4, .having at one side a projecting lug 5, this sprocket-wheel being longitudinally confined between the hub 2 and a disk 6, which is secured to the spindle 3 and has a transverse opening for the guidance of a pin 7, carried by and projecting from a disk 8, which is free to slide upon the spindle 3.

At the end of the spindle 3 is a disk or plate 9, and between said plate and the disk 8 is interposed a coiled spring 10, the tendency of which is to thrust the disk 8 inwardly on the spindle 3, so as to bring its pin 7 into engagement with the lug 5 on the sprocketwheel 4. On the disk 8, however, is a camfiange 11, and mounted at some convenient point, so that its free end can engage with this cam-flange 11, is a pivoted lever l2,which is connected by a link 13 to an arm 14 on a rock-shaft 15, the latter being mounted in suitable hearings on the loom and having another arm 16, which has a pin 17 for en= gageinent with the lever 18 of the shuttle-box mechanism of the loom. The sprocket-wheel 4 receives a chain belt 19, which likewise engages with a sprocket-wheel 20 on the shaft 21, which carries one of the wheels of the train, whereby the take-up roll of the loom receives intermittent movement from the vibrating lay 22 through the medium of the lever 23 and pawl 24. Normally the lever 12 occupies the position shown in Fig. 3, its upper end engaging with the straight face 26 of the camdisk 8, so as to hold thelatter outwardly on the spindle 3 and withdraw the pin 7 from engagement with the lug 5 on the sprocket-wheel4. Hence the latter is free to turn as the take-u p roll of the 100m is intermittently operated by the usual take-up gearing above described. Then, however, it is desired to form a fringe ive movement is imparted to the shuttle-box lever 18, the movement contemplated in the device illustrated in the drawings being a downward movement of that end of the lever which engages with the pin 17. This movement has the effect of'rocking the shaft 15 in such a manner to lift the upper end of the lever 12 out of engagement with the straight face 26 of the disk'8, and'the latter is thereupon, under theinfiuence of the spring 10, moved inwardly on the spindle 3, so as to bring its pin 7 into position to engage with the lug 5 of the sprocket-wheel 4, as shown in Fig. 2, and thus impart rotating movement to the latter and to the shaft2l and take-up roll, this movement continuing as long as the upper end of the lever 12 is held free from engagement with the straight face 26 of the cam-disk 8. As soon, however, as the shuttlebox lever 18 is operated, so as to raise that end of the same which is in engagement with the pin 17, the upper end of the lever 12 will fall into engagement with the cam-face 25 on the disk 8 and will thereby cause the outward movement of said disk 8 on the spindle 3, so as to withdraw its pin 7 from engagement with the lug 5 of the sprocket-wheel 4, and the rapid movement of the take-up roll is thereby arrested. As soon as the disk 8 has by the action of the upper end of the arm 12 upon the fabric which is being woven, excessupon the cam-face 26 of said disk been pushed outwardly to the extent shown in Fig. 3 the lever 12 engages with the straight face 26 of said cam-disk and retains the latter in the outward position until there is a further operation of the lever 12 in order to again release the disk. The movement of the takeup roll necessary to draw out the proper amount of warp-threads to form a fringe is thus efiected automatically and without any stoppage of the loom, and the rotative movement of the take-up roll is so rapid that the necessary amount of warp to form the fringe will be drawn oif in so short a time as to prevent the introduction of a number of shoots of weft to be afterward removed, as when the fringe is drawn slowly forward by hand Without stopping the loom.

The lug 5 of the sprocket-wheel 4 and the pin 7 of the disk 8 constitute, in effect, the engaging members of a clutch, and other forms of clutch may be used without departing from the essential features of my invention. hen the pin is employed, the disk 6 serves to support the pin close up to the engaging end of the same, and thereby prevents the bending or distortion of the pin, which might otherwise occur.

I have shown and described the spring 10 as intended to force the clutch elements into engagement with each other and the lever 12 and cam-flange 11 as effecting separation of said clutch elements; but it will be evident that a reverse construction may be employed if desired-that is to say, the spring may tend to draw the clutch elements out of engagement and the lever and cooperating flange may thrust them into engagement. A weighted lever or equivalent yielding pressure device may also take the place of the spring.

Having thus described my invention, I claim and desire to secure by Letters Patant- 1. The combination in a loom, of the takeup roll, means for driving the same from one of the power-shafts of the loom, a clutch whereby said driving device may be rendered operative or inoperative,and means for throwing said clutch into or out of action, said means comprising a lever for acting on the clutch, a lever forming part of the shuttlebox mechanism of the loom, an intermediate lever acted upon by said shuttle-box lever, and a positive connection between said intermediate lever and the lever which acts upon the clutch, substantially as specified.

2. The combination of the take-up roll, a driving-wheel therefor on one of the powershafts of the loom, said driving-wheel carrying one member of a clutch, a disk rotating with but movable longitudinally on said shaft, and carrying the other member of said clutch, a yielding pressure device for moving said disk in one direction, a lever engaging with a cam-flange on the disk to move it in the opposite direction, and means under control of a moving element of the loom for throwing said leverinto and out ofengagement with the cam-flange of the disk, substantially as specified.

3. The combination of the take-up roll of a loom, a driving device therefor mounted on one of the power-shafts of the loomand having aprojecting lug, a cam-disk turning with said shaft but movable longitudinally thereon and having a projecting pin for engagement with said lug, a disk interposed between the cam-disk and the driving device and serving as a guide and support for said pin, a yielding pressure device for moving the camdisk in one direction, a lever for engagement with the cam-flange on the disk to move it in the opposite direction, and means under control of a moving part of the loom for throwing said lever into and out of engagement with the cam-flange of the disk, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOS. ROWOROFT.

Witnesses:

ROBT. G. WHITE, F. E. BECHTOLD.

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