| 摘要 |
A jacquard device comprises a reciprocating part 4 in which a body 8 is formed with parallel cylinders each containing a piston 10 whose head makes selective engagement with an associated sensing pin of the device on reciprocation of the part 4, depending on whether the piston head is flush with the face of part 4 or is held in a retracted position. Retraction of selected pistons is effected by latching engagement with a hook 44 on a blade whose position is controlled by an electromagnet under electronically programmed control. The piston is normally extended by a spring 24. |
