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
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
Electric motor
Bio-stimulant for improved plant growth and development
Method and apparatus for determining storage capacity error for a data storage device
Method of treating lung cancer
Electrical conduit containing a fire-resisting thermoplastic composition
TRPM8 antagonists and their use in treatments
  Randomly Featured Patents
Die seal ring structure
Barrier coating and penetrant providing oxidation protection for carbon-carbon materials
Method of purifying flue gas waste slurries for use in gypsum production
Image-shake correcting device
Administration of CPAP treatment pressure in presence of apnea
Dehydration procedures for induction of cryptobiosis in insect larvae
Temperature control system having central control for thermostats
Optical beam steering system
Slide lock for a report cover