Projectile ram depth and orientation gauge for a cannontube
AssigneeThe United States of America as represented by the Secretary of the Army
InventorJim A. Faughn
Life of this patent
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Abstract
A combination gauge measures (1) the depth of the projectile inside a cantube bore after the projectile has been rammed and seated in the lands and grooves of the rifling of the cannontube and (2) any angular deviation of orientation of the rammed/seated projectile normal to the centerline of the cannontube. A data logger electronically records the measured data and a computer stores and analyzes the data.
Claims23
A combination gauge for measuring both the depth of a projectile inside a cannontube bore after it has been rammed and seated in the lands and grooves of the rifling of the cannontube and the angular deviation of orientation of the projectile from its normal position with respect to the centerline of the cannontube, the cannontube comprises an elongated chamber having a forward section for housing the projectile and having a forward open end and a rear section constituting the breech chamber and having a rearward open end;
- the gauge comprising in combination:
- an elongated body substantially corresponding to the dimensions of the breech chamber when inserted through the rearward open end of the cannontube;
- a shaft member mounted centrally within the elongated body and adapted to move axially fore and aft in a radially timed manner for deriving the depth dimension measurement of the rammed/seated projectile in the cannontube bore;
- means associated with the shaft member for aligning the shaft member within the breech chamber and positioning with the cannontube or breech face;
- additional means associated with the shaft member for deriving the deviation of orientation measurement;
- and means for electronically recording the derived measurements.
A combination gauge for measuring both the depth of a projectile inside a cannontube bore after it has been rammed and seated in the lands and grooves of the rifling of the cannontube bore and the deviation of orientation of the seated projectile normal to the centerline of the cannontube, the cannontube comprises an elongated bore chamber having a forward section for housing the projectile and having a forward open end and a rear section constituting the breech chamber and having a rearward open end;
- the gauge comprising in combination:
- an elongated body substantially corresponding to the dimensions of the breech chamber when inserted through the rearward open end of the cannontube;
- a shaft member mounted centrally within the elongated body and adapted to move axially fore and aft for deriving the depth dimension measurement of the rammed projectile;
- first and second disk means mounted on the shaft member in a spaced relationship by a connecting tubular member for aligning the shaft member within the breech chamber and abutting the interior wall of the cannontube bore;
- additional means associated with the shaft member for deriving the deviation of orientation measurement;
- and means for electronically processing the derived measurements.
A portable gauge device for quantifying the measurements of the seated depth of a rammed projectile in a guntube bore and for verifying any deviation of orientation of the projectile normal to the centerline of the guntube;
- comprising in combination:
- an elongated body adapted to be inserted in the breech chamber of the guntube;
- a shaft member mounted centrally within the elongated body and adapted to move axially fore and aft for deriving the depth dimension measurement of the breech chamber;
- means associated with the shaft member for aligning the shaft member within the breech chamber;
- additional means associated with the shaft member for deriving the deviation orientation measurement;
- and means for electronically processing the derived measurements.
Dependencies are inferred from the claim text.