Patent GB-758191-A (GB)
Title: Self-actor mule for spinning yarns
IPC: D01H3/00
Filed: 1953-03-31
Abstract: 758,191. Spinning mules. MAK MASCHINENBAU KIEL AKT.-GES. March 31, 1953 [April 24, 1952], No. 8847/53. Class 120 (2). A spinning mule in which driving and control mechanisms are arranged in the carriage square is provided with three control members, one controlling carriage move - ments, one controlling spindle speeds and one controlling the timing of the carriage movements by means of a set of disc cams which make one revolution for each cycle of carriage movements. The three control members 25, 26, 27 are preferably driven by a common motor 28, but may be coupled to individual motors or to two motors. Drive to the carriage is through the member 25 to a shaft 8 extending along the entire length of the carriage and provided with sprocket wheels 10 that engage with links of chains 11 stretched parallel to the carriage rails. A roller 74 on the member 25 acts as a regulator for the carriage movements by responding, against the influence of a spring 75, to the tension exerted by a chain 76 controlled by a cam 38 that is rotated to correspond with carriage movements, a cam 56 that is rotated by the member 27 and so shaped as to determine the carriage speed during outward and inward runs, and a cam 52 that rotates during jacking-up at a rate corresponding to the spindle speed. Cam 52 carries an adjustable sector for adjusting the time of starting and the duration of jacking-up. Spindle speeds are controlled by the member 26 that is regulated through a roller 126 to which a chain 124 is attached that is moved by a cam 63, the movement being modified at appropriate times in the cop-building by a cam 41 driven from the carriage shaft 8. According to the kind of material being spun, the cam 63 is provided with one of several replaceable profile members. The profile of the cam 63 is also continuously modified during the formation of the cops by adjustment of an auxiliary cam member 129 that slides along the side of the cam 63 under the influence of a cam 42 driven from the carriage shaft 8. A cam 60 controls the movements of the faller 61 through a chain 109. The cam 60 is shaped to cause the faller 61 to traverse the cop chase and a cam 40 driven from the carriage shaft 8 modifies the movements of the chain 109 to raise the faller 61 gradually for cop building. A cam 57 controls the counterfaller 58 through a chain 87. Each cam shaft is provided with an electromagnetic coupling 39, 50, 54 by means of which the cams are caused to rotate at the appropriate times determined by switch control cams 36, 37, 51, 55. In order to drive the delivery rollers and bobbin drums from the carriage, a continuous chain is wrapped around an idler sprocket supported beyond the extreme outward run of the carriage and a sprocket beneath the roller beam that is geared to the bottom delivery roller and the bobbin drums. Movement of the chain by the carriage rotates the rollers. A sprocket on the end of the carriage normally idles on the chain, but at the beginning of the outward run the sprocket is rendered stationary to drive the chain. An adjustable stop determines the position at which the sprocket begins to idle and drafting stops. An electromagnetic or a mechanical coupling may be provided for rendering the sprocket stationary.