Counting device

Details Counting device Counting device

1976-07-19

1977-10-18

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92V, 235 92R, 250222PC, B65G 5136

Patent

active

040547795

ABSTRACT:
A seed monitor for a multiple station planter includes a light source adjacent each seed path and a pair of phototransistors positioned in alignment with each light source. The phototransistors for each seed path are connected to pulse generating means, each of which provide a constant width pulse in response to an interruption in light received by a phototransistor from its light source. An OR gate is connected to the pulse generating means so as to provide an output signal whenever there is a pulse at one of its inputs. The light sources for the multiple seed paths may be operated to periodically monitor each planting station.

REFERENCES:
patent: 3537091 (1970-10-01), Schenkenberg
patent: 3700904 (1972-10-01), Stobble et al.
patent: 3928751 (1975-12-01), Fathauer
patent: 3955179 (1976-05-01), Planke

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