GB252286A - Improvements relating to the change shuttle box motions of looms - Google Patents

Abstract

252,286. Barbier, A. March 4, 1925. Change-box motions.-In a drop box motion for twelve boxes, four pinions s<1> - - s<4> are rotated on their respective shafts by toothed sectors b, b<1> on a rotating plate, the rear faces of the sectors b being in the same plane as the front faces of the sectors b<1>. The pinions s<1> - - s<4> are clutched at times to respective coaxially mounted discs c', c', d', d<2> by spring-controlled pins p operated by bell crank levers t and cables u from the card mechanism. Safety devices x are employed. The discs d<1>, d<2> control a lever o pivoted to a crank m<1> on a spindle carried by a main controlling lever j, whereby a rise of from one to four boxes can be obtained. The disc c<1> controls lever mechanism e<1>, f<1>, m and a rack h engaging a pinion i<1> on the spindle of the crank m<1>, which can thus be rotated to give a rise of a further four boxes,. whilst the disc c<2> controls the operation of a rack h engaging a pinion i for causing a rise of a further four boxes. A box-balancing spring y is. used.