Textile machine

Claim 1

A textile machine for processing yarns or threads which comprises a drive shaft, at least one drive shaft coupled to said drive shaft by switchable multistage gearing composed of multiple drive gears capable of being coupled in various gear combinations for the adjustment of the rotation rate ratio between said drive and driven shafts, each driven shaft rotatably driving a plurality of respective spindles, delivery members, draw off members, stretching devices or the like mounted in common on each driven shaft, and an electronic control system for switching the respective couplings of the multistage gears, said system containing feed-in means for decimal numbers for the feeding in of desired rotation rate ratios and a coding circuit with storer means on the output side of the feed-in means for the conversion of decimal numbers into binary-coded signals independent of time, a storage means with scanning means, the storage means generating signals, corresponding to rotation rate ratios settable by means of the multistage gears for the bringing about of the gear combination desired in each case, of coupling switch commands allocated for the gear combination providing the appropriate rate of rotation of said driven shafts to attain the desired technical properties for the particular yarn or thread, and digital comparison stages whose inputs are connected with either said feed-in means or said coding circuit with said storer means, as well as to the scanning means, said digital comparison stages producing an output signal which triggers the issuing of one of said coupling switch commands by said storage means when the input rate of rotation ratio of said feed-in means or said coding circuit corresponds to a rate of rotation ratio stored in said storage means.