Stock feed apparatus

Advancing material of indeterminate length – By intermittent material-mover – Unicyclic mover

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Details

226147, 226150, 226158, 226162, B65H 2000, B65H 2306

Patent

active

046696458

ABSTRACT:
A fluid operated stock feed apparatus for intermittently advancing stock along a feed path. The feed apparatus includes a stationary body having fluid operated stock holding clamps mounted thereon. A stock feed head is mounted for reciprocation relative to the body and has fluid operated stock feed clamps mounted thereon and a feed piston is mounted in the body for extending and retracting the stock feed head. A main control valve is provided in the body for controlling the application of fluid pressure to the fluid pressure operated stock holding and stock feed clamps and a pressure operated auxiliary valve is provided in the body and is responsive to the pressure from the main control valve for controlling the application of fluid pressure to the feed piston. The main body is formed with a bore therethrough and the feed cylinder is provided in one portion of the bore. The pressure operated auxiliary valve including an auxiliary valve casing, an auxiliary valve member and a pressure operator therefor, is mounted another portion of the bore at one end of the feed cylinder. The feed cylinder is formed by a sleeve disposed in the bore and arranged to provide a pressure chamber around the sleeve.

REFERENCES:
patent: 3038645 (1962-06-01), Nordlof
patent: 4095733 (1979-06-01), Scribner
patent: 4175688 (1979-11-01), Scribner

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