The printing head may reciprocate linearly relative to the printing bracket.

A force-returning device (8) is arranged on the frame in a reciprocating manner.

A linear actuator (22, 24) assembly moves the center tool back and forth between the upper (12) and lower (14) tools.

Thus an effect similar to the 'scratching' of a vinyl record by moving the record back and forth on a record player is obtained.

The housing (60) comprises a bore (61) into which the lifter (10) can be inserted so as to be able to move backwards and forwards.

An apparatus (10) to transfer power from rotary power to reciprocating power includes an odd numbered muiti-lobed rotating cam (12) that acts on a follower, which, in turn, causes or acts in response to reciprocation of pistons (36, 38).

In addition, the stroke center position of the reciprocal movement of the drive element (131) moved between the first position and the second position is configured to be variable.

The invention is primarily based on a process for the to and fro movement of an item with drillings during its wet chemical treatment.

This solid/liquid separator (10) is a device for separating unnecessary solid matter (SM) which has generated in a liquid.

Said pressure cup support(42) allows the pressure cup (6) to be displaced back and forth between the input point (4) and the processing point (9).

The spacing between the fuel-side seal (31) and the lubricating-oil-side seal (41) is set so as to be larger than the reciprocating motion distance of the axle.

The hydraulic motor drive carries out an advancing movement and rotation of the perforated drum by supplying water from the hydraulic motor system, the water also being usable for cleaning the panels.

In the connecting channel (9) there is a regulating cavity (10) with a variable volume, the volume being regulated by moving a regulating piston (11) of the apparatus back and forth.

The carriage assembly has a drum that rotates in response to linear reciprocation of the carriage assembly, and a suction lip is positioned proximal a wail of the drum.

The inventive door locking device comprises the following components arranged in a body: a cross bar (2) provided with a drive for reciprocatingly displacing it and a means for fixing the cross bar in the closed position.