Velocity computing chronograph

Details Velocity computing chronograph Velocity computing chronograph

1976-06-01

1977-06-21

Wise, Edward J.

Registers

Transfer mechanism

Traveling pawl

324178, 235 92BD, 250222R, 235 92T, G01N 2310, G06M 306

Patent

active

040313735

ABSTRACT:
A velocity computing chronograph includes a chain of BCD counter stages having a clock input signal gated via the outputs from a pair of spaced apart photo-electric screens for measuring the time of flight of a bullet between the screens. BCD coded numerical switches are provided for the manual entry of the distance between the screens. A multiplexer serially applies the BCD digit signals first from the numerical switches and thereafter from the counter stages to the BCD data digit input of an integrated circuit calculator chip. The calculator circuit has divide and equal command input terminals which are driven automatically at appropriate times for the projectile velocity to be computed in the calculator circuit and display on an LED display driven thereby.

REFERENCES:
patent: 3127768 (1964-04-01), Mason
patent: 3215932 (1965-11-01), Sims et al.
patent: 3567951 (1971-03-01), Montgomery, Jr. et al.
patent: 3610895 (1971-10-01), Wollesen
patent: 3750019 (1973-07-01), Blanyer
patent: 3787770 (1974-01-01), Cote et al.
patent: 3792354 (1974-02-01), Slaght et al.
patent: 3824463 (1974-07-01), Oehler
patent: 3859512 (1975-01-01), Ritzinger

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