position adjusting plate13B light for ease of movement, the lock drive mechanism70and the like are preferably installed on the base plate13A. For this reason, an eccentric transmission mechanism50is provided to transmit a driving force from the lock drive mechanism70to the T-shaped key14c(14d)...
This key and keyway prevent rotation of the rod. The rod 47 projects into the interior of the cylinder 53 and has a reduced portion 47b receiving a piston 56 therearound. A shoulder 47c is provided at the base of the reduced portion 47b to bottom the piston 56. The reduced portion ...