| 摘要 |
A dispenser for coiled sheet material which can be operated either through lever action or by a rotatable crank without modification of the dispenser. The dispenser includes a pair of cooperating feed rolls, one of which is a drive roll having a drive shaft. A gear is connected to the drive shaft through a one-way clutch mechanism and a gear segment, which is pivotally connected to the frame of the dispenser, is engaged with the gear. Connected integrally with the gear segment is a lever having a removable knob or handle which extends outwardly through the cabinet of the dispenser. By pushing downwardly on the handle the lever and gear segment will be pivoted to thereby rotate the gear and drive the feed rolls to dispense a length of sheet material. After dispensing, the lever is biased upwardly to its original position by a torsion spring. To convert to a crank mode of operation, the handle is removed from the end of the lever, enabling the biasing mechanism to urge the lever to a further upward position where it will move the gear segment out of contact with the gear, thereby disabling the lever mode of operation. A crank arm can then be removably secured to the end of the shaft, so that rotation of the crank will dispense a continuous length of sheet material.
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