Device for computing the displacement of the line of aim for fire arms

Claim 1

RANGE CONTROL MEANS FOR A LEVEL TRAJECTORY FIRE WEAPON COMPRISING AN INDEX PLATE WITH A RETICULE PATTERN THROUGH WHICH THE TARGET IS VISIBLE FOR OBSERVING THE MOVEMENT OF A TARGET WHILE THE WEAPON IS STATIONARY, A PULSE GENERATOR FOR GENERATING A CONTINUOUS TRAIN OF PULSES, FREQUENCY CONTROL MEANS FOR ADJUSTING THE FREQUENCY OF REOCCURRENCE OF THE PULSES OF SAID TRAIN OF PULSES, SAID FREQUENCY CONTROL MEANS BEING CONNECTED TO SAID RANGE CONTROL MEANS SO THAT THE TIME INTERVAL BETWEEN TWO CONSEQUENT PULSES IN SAID TRAIN OF PULSES IS EQUAL TO THE TIME OF FLIGHT FOR A PROJECTILE FROM THE WEAPON TO THE TARGET, AND INDICATOR MEANS FOR INDICATING EACH PULSE IN SAID TRAIN OF PULSES AND FOR ENABLING THE OPERATOR TO OBSERVE THE POSITION OF THE TARGET ON SAID INDEX PLATE AT THE OCCURRENCE OF EACH PULSE IN SAID TRAIN OF PULSES.