Apparatus for monitoring the draw-in procedure and the tearing-o

Details Apparatus for monitoring the draw-in procedure and the tearing-o Apparatus for monitoring the draw-in procedure and the tearing-o

1977-08-19

1979-05-15

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With apparatus using centrifugal force

34 54, 34159, 226 11, 226 44, 226 45, F26B 1312

Patent

active

041540042

ABSTRACT:
This invention relates to an improvement in an apparatus for monitoring the drawing-in operation and the tearing-off of a sheet of material in a dryer, wherein a sheet of material to be dried is guided over continuously-rotating screen-type conveyor belts, particularly jet dryers with conveyor belts positioned in several stages, and with means for transferring the sheet of material from one stage to the next-following stage, the improvement comprising a two-stage construction of the monitoring apparatus, a first stage comprising a first partial means for optically monitoring the path of the sheet of material during the drawing-in operation, and a second stage comprising a second partial means for monitoring the tension of the sheet of material in running operation, said first partial means releasing said second partial means upon completion of a malfunction-free drawing-in operation.

REFERENCES:
patent: 1543368 (1925-06-01), Carrier
patent: 2501537 (1950-03-01), Parkes
patent: 2928185 (1960-03-01), Drew
patent: 3016622 (1962-01-01), Gade et al.
patent: 3085347 (1963-04-01), Justus
patent: 3326436 (1967-06-01), Huck
patent: 3367039 (1968-02-01), Jacobsen
patent: 3921877 (1975-11-01), Gith

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