AIMING DEVICE FOR LIGHT WEAPONS PARTICULARLY FOR COMBATING MOVING AIR TARGETS

• US 3,638,321 A
• Filed: 11/05/1969
• Issued: 02/01/1972
• Est. Priority Date: 12/20/1968
• Status: Expired due to Term

• Current Assignee: Hans Eglin
• Original Assignee: Hans Eglin
• Inventors: Eglin, Hans
• Primary Examiner(s): Martin, Jr., William D.
• Application Number:
  US04/874,232
• Time in Patent Office: 818 Days
• Field of Search: 33/49 89/41AA
• US Class Current: 89/204
• CPC Class Codes: F41G 3/00 Aiming or laying means sighting devices F41G1/00; determining direction, distance or velocity by use of radio or other waves G01S; computers G06; antennas H01Q
• CPC Class Codes: F41G 5/08 Ground-based tracking-systems for aerial targets
• CPC Class Codes: G02B 23/14 Viewfinders for photographic apparatus G03B13/02

Abstract

A device for determining lead values, appears with the lead directions being represented as apparent flight directions, in the viewing field of a telescope or reflex sight, in the form of radial line markings. The radial line markings are associated with at least one lead curve which is movable relative to the line markings and is driven only as a function of the elevation aiming movement of the weapon. Two lead curves are provided, each assigned to a respective different target speed. The lead curve assigned to the faster target speed is driven in accordance with the sine function of the elevation angle of the weapon, and the lead curve assigned to the slower target speed is driven in accordance with the cosine function of the elevation angle of the weapon. The radial line markings present lead markings formed by interruptions therein as well as by their inner ends adjacent the cross hairs of the viewing field.

Claims

1. In aiming apparatus, for light weapons, particularly for combating moving air targets, and of the type including a device for determining lead values, with the lead directions being represented, in the viewing field of a telescope or reflex sight, as apparent flight directions in the form of radial line markings on a transparent plate, with the radial line markings including a pair of radial line markings extending horizontally in opposite directions to form a hoRizontal diametric line marking, the radial line markings being associated with at least one lead curve on a respective transparent support which is movable downwardly relative to the line markings, and means driving each transparent support as a function of the elevation aiming movements of the weapon;

the improvement comprising said means driving at least one lead curve disk in accordance with the cosine function of the elevation angle of the weapon;

each lead curve being curved downwardly from the horizontal with its curved portion terminating at points on a horizontal line whose midpoint is aligned vertically with the center of said diametric line marking;

the lateral ends of said lead curve extending vertically upwardly from said points on said horizontal line;

whereby lead values are obtainable at every possible elevation angle of the weapon, as well as in pass-by flights of the moving air target, even at the critical point.

2. In aiming apparatus for light weapons, the improvement claimed in claim 1, including at least two lead curve supports each corresponding to a respective different target speed;

the lead curve corresponding to the faster target speed being driven in accordance with the sine function, and the lead curve corresponding to the slower target speed being driven in accordance with the cosine function, of the elevation angle of the vehicle.

3. In aiming apparatus for light weapons, the improvement claimed in claim 1, in which said radial line markings have lead markings formed by interruptions therein.

4. In aiming apparatus for light weapons, the improvement claimed in claim 1, in which the inner ends of said radial line markings, facing crosshairs in said viewing field, are spaced from said crosshairs to present lead markings.

5. In aiming apparatus for light weapons, the improvement claimed in claim 2, in which said radial line markings have lead markings formed by interruptions therein.

6. In aiming apparatus for light weapons, the improvement claimed in claim 2, in which the inner ends of said radial line markings, facing crosshairs in said viewing field, are spaced from said crosshairs to present lead markings.

7. In aiming apparatus for light weapons, the improvement claimed in claim 1, including means mounting each transparent support for movement and interchange.

8. In aiming apparatus for light weapons, the improvement claimed in claim 2, including means mounting each transparent support for movement and interchange.