Sheet feeding or delivering – Feeding – By means to convey sheet
Patent
1974-12-16
1976-10-19
Saifer, Robert W.
Sheet feeding or delivering
Feeding
By means to convey sheet
271 14, B65H 510
Patent
active
039867137
ABSTRACT:
In sheet feeding apparatus of the type having a feed table, feed grippers movable back and forth to transfer sheets on the feed table, carrier means including an oscillating lever, a shaft, a crankwheel mounted on the shaft and a coupler connected between the crankwheel and the lever, the carrier means being movable above the feed table between a first and a second position for mounting the feed grippers thereon, drive means and operable means for respectively moving and lowering the carrier means so as to dispose the feed grippers below the top surface of the feed table as the carrier means commences a return movement to the first position, the improvement including an eccentric crankpin mounted on the crankwheel and connected to the coupler at a location thereof spaced from the location at which the coupler is connected to the oscillating lever; and motion generating means including the crankwheel actuated by the driving means for imparting a cycloid motion to said eccentric crankpin about the center of rotation of the crankwheel.
REFERENCES:
patent: 1203914 (1916-11-01), Schafer
patent: 1298485 (1919-03-01), Feldman
patent: 1893455 (1933-01-01), Stone
patent: 2922646 (1960-01-01), Buttner
Heidelberger Druckmaschinen Aktiengesellschaft
Lerner Herbert L.
Saifer Robert W.
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