Automatic hold speed setting control method and apparatus used w

Details Automatic hold speed setting control method and apparatus used w Automatic hold speed setting control method and apparatus used w

1978-02-23

1980-04-29

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 52, F26B 300

Patent

active

041998715

ABSTRACT:
An automatic hold speed setting control method and apparatus is used in conjunction with the method and apparatus of a continuous wood veneer dryer conveyor speed control monitoring computer apparatus. This automatic hold speed setting control apparatus is triggered when electrical signals cease, that were being generated by a tachometer monitoring the conveyor speed of the continuous wood veneer dryer. It then allows the automatic speed control monitoring computer apparatus to remain on the line possibly throughout two minutes to determine whether or not the shutdown of the dryer conveyor is perhaps only temporary. If not temporary, this automatic hold speed setting control apparatus becomes effective in disconnecting the automatic speed control monitoring computer apparatus and in holding a conveyor speed setting established just before the dryer conveyor shutdown. When the conveyor operates again, the electrical signals again being generated by the tachometer, are delayed in their effectiveness for a period representing the discharge of a load of wood veneers being dried, and often an additional limited extended period. Thereafter, these electrical signals become effective as before within the circuitry of the automatic wood veneer dryer conveyor speed control monitoring computer apparatus.

REFERENCES:
patent: 2942352 (1960-06-01), Eicken-Estienne
patent: 3395459 (1968-08-01), Taylor
patent: 3732435 (1973-05-01), Strandberg, Jr. et al.
patent: 3961425 (1976-06-01), Swanson et al.

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