Analog calculator for wind deflection of rifle bullets
OwnerWilliam Thomas Piferinventor
Life of this patent
Estimating the term…
Abstract
Certain embodiments of the disclosure may include systems and methods for calculating the wind deflection of a rifle bullet using concentric scales. The scales are marked radially on each side, one side pertaining to wind speed and the opposite side pertaining to wind direction. The scales of one side include indicia of deflection at various wind speeds, and the scales of the other side include indicia for various wind directions. Using both sides together and in sequence, correction can be made for both wind speed and wind direction.
Claims10
An analog calculator for determining deflection of a bullet comprising a flat disc having a first side and an opposite second side,
- said first side includes a first series of indicia of deflection at various wind speeds,
- an indicator member movably connected to said disc and having a scale of wind speeds,
- said indicator member including an indicator line positioned over said first series of indicia,
- said second side having a second series of indicia of deflection for various wind directions,
- said indicator member including a second indicator line positioned over said second series of indicia,
- a scale of values based on wind direction,
- a circular center portion of said indicator member for selection of said values based on wind direction,
- whereby a deflection for wind speed determined using said first side of the disc is transferred to said second side for correction for wind direction.
A method of using an analog calculator for determining deflection of a bullet, the method comprising:
- using the analog calculator, the analog calculator comprising:
- a flat disc having a first side and an opposite second side,
- said first side including a first series of indicia of deflection at various wind speeds;
- an indicator member movably connected to said disc and having a scale of wind speeds,
- said indicator member including an indicator line positioned over said first series of indicia;
- said second side having a second series of indicia of deflection for various wind directions;
- said indicator member including a second indicator line positioned over said second series of indicia;
- a scale of values based on wind direction;
- and
- a circular center portion of said indicator member for selection of said values based on wind direction;
- and
- transferring a value of deflection for wind speed determined using said first side of the disc to said second side for correction for wind direction.
Dependencies are inferred from the claim text.