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
Methods and devices for central photoplethysmographic monitoring methods
Selective undo of editing operations performed on data objects
Supporting frame for cup-like objects
Ram air turbine deployment actuator
Light emitting device
6-cyclylmethyl-and 6-alkylmethyl-substituted pyrazolepyrimidines
Apparatus, and associated method, for paging a mobile station with page addresses upon a paging channel
  Randomly Featured Patents
Balance for teaching
Image forming apparatus including a developer replenishing device which uses an air feeding device for a two-ingredient type developer
Semiconductor device and method of testing the same
Multimode optical fiber
Area efficient stacking of antifuses in semiconductor device
Mono-planar pedicle screw method, system and kit
Apparatus for synchronizing the driving and driven members during gear shift operations
Remote monitoring device and process
Blow-molding machine comprising a closing and locking mechanism
Rail mounted patient lift