| 摘要 |
The paper towels dispensing appts. includes a housing, a supply roll of a continuous paper web, a drive for advancing the paper web outside the case, a device for partially cutting the paper web protruding from the case, and a motor. The motor is an electric d.c motor which is rotated in a first direction until a paper web of predetermined length is advanced outside the case. The rotation is then reversed so that the paper advancement is stopped and the paper web is out. A first unidirectional coupler is arranged between the motor and the cutter to selectively actuate either of the advancer or cutter according to the rotational direction of the motor. The length of the dispensed towel is an integer multiple of an elementary length and the number of elementary lengths by which the paper web is advanced before being but is selected by properly setting a number of switches. |
