| 摘要 |
An accessory for paper supply feeders on standard printing presses of the class utilizing a paper supply pile height sensor to position a platform having a substantial stack of paper to be fed to a printing press includes an adjustable, variable force biasing means for alleviating the downward force of a reciprocating cyclically applied pile height sensor as the sensor is applied to the top of a stack of paper so that the supply at the top of the stack does not become distorted. This permits the printing press to operate with a greater paper supply capacity while eliminating misfeeds or other interruptions in operation, reduces the set-up time and allows the press to be operated for substantially longer periods of time without requiring an operator's attention.
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