Device for sensing and indicating the end of a tape in a tape re

Details Device for sensing and indicating the end of a tape in a tape re Device for sensing and indicating the end of a tape in a tape re

1978-09-19

1980-09-16

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

200 6117, 242198, G03B 104, G11B 1532, G11B 2304

Patent

active

042225361

ABSTRACT:
In the device disclosed, a rotatable tape end sensing lever is connected to a tape supply shaft at one end and an operational switch at the other end. In normal operation, a fly-wheel having an annular projection runs clear of the operational switch. At the end of the tape, the tension turns the lever which shifts the switch toward the annular projection. A break in the annular projection causes the switch to close and latches it. In one embodiment, a groove over a given angle of the rotating annular projection momentarily receives the switch and then moves into a position in which the switch is closed and an alarm signal is generated.

REFERENCES:
patent: 3971528 (1976-07-01), Komatsu et al.
patent: 4123015 (1978-10-01), Komatsu et al.

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