Registers – Calculators – Single axis
Patent
1980-04-04
1982-01-19
Hix, L. T.
Registers
Calculators
Single axis
235 88R, G06C 2700
Patent
active
043119026
ABSTRACT:
A calculating device and a method of use thereof for determining the lead required to shoot a projectile at a moving target such as game including cooperating logarithmic scales with parameter indicia corresponding to the range of the target, the speed and direction of movement of the target, the speed of the projectile and the required lead displayed on a fixed and a slide member. Markers representative of various projectiles are disposed on the projectile velocity scale at locations corresponding to their normal speed and words descriptive of game speed are disposed at appropriate locations along the target speed scale so that calculations may be made by persons not having knowledge of game and projectile speeds in numerical terms. The lead is calculated from a knowledge of the parameters in a two step process of moving one member relative to the other. In accordance with one embodiment of the invention, the scales are arcuately disposed on members which may be rotated about a common axis.
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Fuller Benjamin R.
Hix L. T,.
LeadRite Corporation
Nixon Larry S.
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