Patent GB-190013717-A (GB)
Title: Improvements in and relating to Looms for Weaving.
Inventor: PERHAM CHARLES FOSTER
Filed: 1900-07-31
Granted: 1900-12-22
Abstract: 13,717. Lake, H. H., [Perham, C. F.]. July 31. Loom driving-mechanism.-A clutch for connecting the driving-pulley 512, Fig. 4, to the crank shaft 4 consists of a hub 12, keyed on the shaft and carrying by an arm 14 a split ring 13 with peripheral flanges 212, 213. The ring is expanded by a pin 15, which has an elliptical or flattened head 16 and is rocked by an arm 17, 18 and a sliding cone 20 in connection with the stop lever of the loom. Loom picking-sticks, checking.-A friction strap 62, Fig. 7, is coiled once around a pin 61 on the lay sword 8, and is connected at its ends to the picking-stick 10 and a spring 64. A stud 67 on the pin 61 passes through a slot in the strap, which only binds on the pin during the return motion of the picking-stick. Loom stop-motions.-To stop the loom when a warp thread breaks or becomes sufficiently entangled with adjacent threads to form a float, a series of wire droppers 30, Figs. 11 and 15, are suspended on a pair of parallel guide-bars 28, 29. The parts d of the droppers normally form a straight line across the warp, but in case of a fault at any place the corresponding dropper is not supported and the end of the part a descends across the horizontal groove 301, and prevents the oscillated feeler 31 from entering it. This causes a lever to be held in the path of a dagger on the lay, and the loom to be thereby stopped. The loom is also stopped, if the shuttle fails to box properly, by means indicated in the next paragraph. Looms, checking shuttles in; shuttle-relief motions.-A false wall 71, Fig. 17, of the shuttle box is acted upon by a swell 74, pivoted at 75 and operated by an arm 82 on a rocking-shaft 81. The shaft 81 has a yielding arm 83, Fig. 20, which is actuated by a cam-piece 93 and a spring-pivoted switch 95 on the breast beam 3. The shaft 81 also carries a dagger 98, which is normally held out of the path of the stop slide 99 by the swell, but if the shuttle fails to box, is raised into engagement with it. Loom shuttle-changing mechanism.-For inserting a new shuttle when the weft fails, the weft-fork slide, by oscillating the shaft 123, Fig. 25, causes a hook 122 to engage with a spring lever 116, which by means of pin and slot mechanism 118, 120 rocks the shaft 107 and causes the fingers 108, 109 upon it to allow a full shuttle to fall into the shuttle box from a reservoir 101. At the same time a pivoted plate is caused by an arm on the shaft 107 to deflect the incoming shuttle into a receptacle provided for it. The swell 74 also is prevented from being moved inwards, by the arm 82 on the shaft 81, by means of a finger 124 on the shaft 107 engaging with a spring- piece 125. Means are provided for preventing the shuttle-changing mechanism from acting in case the weft becomes slack owing to the power falling off a little, and for lifting the weft fork on the first reciprocation of the lay in starting the loom. The picking-stick is returned quickly, to permit the change of shuttles, by a lever 163 extending across the lever 116 and connected by a cord 162 to the spring 64 or strap 62.