Patent GB-190415503-A (GB)
Title: Improvements in Apparatus for Slaying Warps
Inventor: JOUBERT JOSEPH
Filed: 1904-07-12
Granted: 1904-12-22
Abstract: 15,503. Joubert, J., and Suter, F. July 12. Loom reeds, drawing warp threads through.- In a machine for drawing warp threads through reeds, means are provided for moving the drawing-in hook and its tongue in an arc through the reed, for adjusting the hook and tongue to suit the thickness of the reed dents, and for adjusting the movement of the book to suit various reed widths. The reed is secured in a horizontal position in the frame of the machine, and above it is mounted a screwed spindle 1 in the frame sides 2, 3, which are connected by stays. On the spindle 1 between the sides 2, 3 are mounted a scroll 4 and a feed-wheel 5, projections 7, 8 on the scroll engaging in a longitudinal groove 6 in the spindle, and a spring pawl 9, secured to the wheel 5, engaging in the threads of the spindle. Upon a shaft 10, Fig. 2, carried by the frame sides, is mounted eccentrically a cylindrical body 11, to which are pivoted depending arms 12, 13, linked together at their lower ends by a shaft 14. Upon the shaft 14 is eccentrically and loosely mounted a cylindrical body 17, which carries an angular piece 18, U-shaped in section. The tongue 22 is mounted to turn on a stud 23 in the body 17, and has an extending arm provided with a V-edge engaging in the thread of a screw 25. The drawing-in hook 20 is secured on a rod 19 which is rotatably mounted in the piece 18, and a coiled spring 21 presses the hook against its tongue 22. The warp threads are placed by hand into the eye of the hook, when the latter is in its lowest position with the eye below the reed. The spindle 1 and its scroll 4 oscillate, and a strap 38, secured to a step 37 of the scroll and to the cylindrical body 17, causes the latter to swing around its rod 14, whereby the hook and tongue pass upwards and downwards through the reed. A crank-stud secured to the scroll is pressed against by the long arm of an angular lever 35, of which the short arm is secured in the cylindrical body 11, so that the whole parallelogram consisting of the body 11, the depending arms 12, 13, and the rod 14 is caused to swing on the shaft 10, and the hook while moving up and down also moves in the direction of the reed dents. This movement enables the reed dents to position themselves in relation to the hook when the latter is entering between the dents. By adjusting the lever 35 in the body 11, the movement of the hook in the direction of the reed dents can be regulated in accordance with the reed width. As the book simultaneously rises and recedes, it brings the warp thread placed in its eye to a chain 44, so that the thread is placed into one of the spaces formed between the eyes of the chain, and is taken out of the hook eye and carried away by the chain at the next movement of the latter. By adjusting the screw 25, the point of the hook is moved a short distance away from the tongue, as shown in Fig. 9, the distance being regulated according to the thickness of the reed dents. The hook and tongue move upwards together through the reed, but, when the hook moves downwards, it enters between the next pair of dents to the right, and the hook and tongue move downwards in different spaces, so that the warp thread cannot get pinched, and will remain hanging on the chain 44. The body 17 will move with the hook and tongue the distance of one dent to the right at each up-anddown movement, and an upward extension 32 on the arm 12 will move a bar 34, pivoted to it, so that the edge of a curved recess in the bar will move away from a stud 30 fixed to a double pawl 27, which is pivoted on a stay-rod 26. The upper end 28 of the pawl will engage a tooth of the feed-wheel 5, so that, during the downward movement of the hook, the wheel will be prevented from rotating, and, by the action of the spring pawl 9 in the screw-thread, will slide the scroll 4 to the right. When the scroll 4 has brought back the hook, the edge of the recess in the bar 34 presses upon the stud 30, and places the pawl 27 in a neutral position, as in Fig. 2, or, if the feedwheel has run too far, causes the end 29 to engage the wheel, so that the wheel is prevented from rotating upwards, and is moved back to its proper position. At each oscillation of the scroll, a partial turn is imparted to a wheel 49, loosely mounted on a stud 50, by means of a strap 55, a pivoted lever 46, and a link 47 pivotally connected to the wheel. A pawl 54, also pivoted to the wheel 49, acts upon a feed-wheel 52 attached to a pulley 43, which with a guide-pulley carries the chain 44. A partial rotation is thus given to the pulley 43 at each oscillation of the scroll, and an intermittent movememt simparted to the chain 44.