Automatic liquid pend drawing machine - employs parallel feed tubes with side entry pressure sensor and electromagnetic control of bellows feed

Abstract

Abstract The equipment comprises a cylindrical member or members with a small exit duct at the lower extremity with a side tube leading to a piezo-resistive pressure sensor. Signals are transmitted through a conductor (6) to an equalisation circuit (7) to a magnetic coil (8) so that the magnetic field may be varied around a push rod (9), which is in contact with a bellows unit (10). On the side of the bellows opposite to the push rod a tube (11) feeds the liquid to be automatically monitored and fed to the upper end of the vertical tube. A number of automatic pen tracing heads may be controlled by the same pressure sensor and regulator.

Inventors

• 👤 Gerold Anderka

Bibliographic Details