GB162474A - Improvements appertaining to change box mechanism for looms - Google Patents

Abstract

162,474. Barker, D. V. Feb. 28, 1920. Change-box motions.-In order to prevent vibration of the change-box in rotary or oscillating change-box motions wherein hooks 7, 7a, Fig. 1, are adapted to engage pegs on a wheel 2 and a spring-controlled hammer 5 is adapted to engage a star-wheel 3 on the shaft of the changebox, the spindle 5a of the hammer is locked by the operation of either of the hooks after it has turned the box by means of one of two levers 10 or 10<a> having arms d, d<1>, Fig. 6, adapted to be placed in the path of the end of the spindle 5a to prevent it from moving downwardly. When a hook, e.g. the hook 7a, is moved downwardly to turn the box, the star-wheel 3 causes the spindle 5<a> to be depressed, and upon further movement of the hook, a spring 12<a> carried thereon presses against the arm d<1> of the lever 10<a>, as shown in Fig. 4. When the box has been turned into its required position, the star-wheel allows the spindle 5a to rise, and the spring 12a then forces the arm d' beneath the end of the spindle to lock it. The levers 10, 10<a> are acted upon by a spring 11 so that their arms d, d<1> are normally held out of the path of the end of the spindle 5a.