| 摘要 |
The invention relates to an electromechanical pulse device of a dobby, which, for pivoting out the pattern levers, contains sprung force-transmission pins actuated by sprung rails movable to and fro, the rails being provided with electromagnetic locks.
<??>The object of the invention is to form a simple electromechanical pulse device which allows a rapid and simple replacement of the mechanical pulse devices employed on dobbies used hitherto.
<??>According to the invention, the sprung force-transmission pins (43, 43') and upper and lower sprung rails (34, 34'), actuating them, for the two groups of pattern levers (21, 21') are arranged so as to be radially movable relative to the drive cam (36) mounted on a shaft, and the sprung force-transmission pins (43, 43') and the associated sprung upper rail (34) of one group of pattern levers (21) and the sprung force-transmission pins (43') and the associated sprung lower rail (34') of the other group of pattern levers (21') form with one another an acute angle ( alpha ) which corresponds to half the angle ( beta ) formed by two adjacent peaks of the drive-cam wheel.
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