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
Image generation based on a plurality of overlapped swathes
Polar nematic compounds
Code reading apparatus, sales registering apparatus, and sales registering method
Field device for determining or monitoring a physical or chemical process variable
Salts and polymorphs of desazadesferrithiocin polyether analogues as metal chelation agents
Method for generating codewords
Apparatus and method for extracting cascading style sheet rules
  Randomly Featured Patents
Process for the synthesis of carboxylic anhydrides using a vanadium, phosphorus oxygen containing catalyst composition
Air/fuel ratio feedback control system for internal combustion engine
Multi-dimensional transformation systems and display communication architecture for musical compositions
Reference picture prediction for video coding
Apparatus and method for determining whether machine readable information on an item matches the item
Semiconductor device, LED driving circuit, and apparatus for displaying an image
Continuous drier for plywood sheets
Porous implant device with improved core
Auto-correlation arrangement
Method and apparatus for a package having multiple stacked die