Apparatus for cocking a breechblock
AssigneeWerkzeugmaschinenfabrik Oerlikon-Buhrle AG
InventorHeinz Schellenberg
Life of this patent
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Abstract
An apparatus for cocking a breechblock of an automatic firing weapon equipped with an electric motor which is operatively connected through the agency of an electromagnetic coupling with a displacement mechanism for the breechblock in order to move the breechblock into its cocked position, an electric switch which, upon reaching the cocked position, cuts-off the coupling. An overload device is provided which upon exceeding a certain value of the displacement resistance of the breechblock actuates the electric switch for cutting-out the coupling.
Claims2
An apparatus for cocking a breechblock of an automatic firing weapon comprising, in combination:
- A. an electric motor;
- B. a displacement mechanism for the breechblock for moving the breechblock into its cocked position;
- C. an electromagnetic coupling for connecting said electric motor with said displacement mechanism;
- D. transmission means arranged between the electric motor and the electromagnetic coupling;
- a. said transmission means forming an overload device including:
- 1. a worm;
- 2. a worm gear meshing with said worm;
- 3. a spring cooperating with said worm;
- E. means for mounting said worm to be axially displaceable against the force of said spring;
- F. a conical portion provided for the worm;
- G. an electric switch for disconnecting the electromagnetic coupling when the breechblock reaches its cocked position;
- H. said conical portion actuating said electric switch during axial displacement of the worm for disconnecting the electromagnetic coupling upon encountering a displacement resistance of the breechblock which exceeds a predetermined value.
Dependencies are inferred from the claim text.