Resources Contact Us Home
Press-feed units

Image Number 3 for United States Patent #4223821.

A press-feed unit is operative to feed a length of stock material to a press. The unit comprises a body for fixing adjacent the press and a transport section reciprocable relative to the body by a pneumatic piston and cylinder assembly, the stock being clamped to the transport section during forward feed strokes of the latter. The unit further comprises a control valve, and a transport feed valve which is controlled by a pilot pressure signal from the control valve and operable to feed the transport cylinder. A pilot signal connection is provided which can be blanked off to enable the unit to operate independently, or connected through a pilot pressure pipe to a basically similar unit to provide a duplex arrangement of two units, one of which is directly controlled in dependence on press ram position and provides a pilot signal through said pipe to operate the transport feed valve of the other unit.

  Recently Added Patents
Battery loading and unloading mechanism
Distylium plant named `PIIDIST-I`
Data architecture and user interface for plasma processing related software applications
Satellite fleet deployment
Method for repairing or replacing damaged tissue
Transmission apparatus, receiving apparatus, method, and storage medium
Gyroscope utilizing torsional springs and optical sensing
  Randomly Featured Patents
9-julolidinyl derivatives and process of preparing them
Pyrazinium substituted cephalosporins
Apparatus for performing diagnostic and therapeutic modalities in the biliary tree
Communication bus system operable in a sleep mode and a normal mode
Frame and runner elements
Cleaning apparatus for copy machines
Method and apparatus for leakage blocking
Switch having at least two stable positions, especially for a motor vehicle
Apparatus for testing the load bearing strength of an architectural structure