Arrangement for horizontally orienting a rotatable platform for a weapon

An improved arrangement for horizontally orienting a rotatable weapon support platform, which arrangement has a base surface and adjustable means and support means disposed between said base surface and said platform for compensating for the sloping, if any, of said base surface, the improvement comprising in combination,

• a pair of members having parallel confronting surfaces, the bottom member of said pair of members being rotatably mounted on said base surface and the top member of said pair of members being rotatably mounted on the bottom member so that the bottom and top members are rotatable relative to each other;
• said top member having a first top surface on which said weapon support platform is rotatably mounted,
• said first top surface being capable to be oriented horizontally by rotating said top and bottom member relative to each other and relative to said base and weapon support platform,
• said top and bottom members having respective longitudinal axes along their respective top and bottom surfaces,
• said top and bottom members are formed as either hollow cylindrical discs or massive cyindrical integral members and each member has one end face which is parallel relative to the longitudinal axis of the member and one end face which is skewed relative to the longitudinal axis of the member.
• said base surface forming part of the fuselage or roof of an armored vehicle which base surface has a longitudinal axis, and a first swing axis of said weapon support platform and the longitudinal axis of the top surface of said top member assume a common predetermined horizontal position after the top and bottom members have been rotated in a common direction into a predetermined first position,
• and after said top and bottom member have been simultaneously uniformly rotated in mutually opposite directions into a predetermined second position, said weapon support platform is thereby swung about the longitudinal axis of the top surface of the top member to assume a horizontal position.