Title:5.5 INCH AND 4.5 INCH GUNS: PART 1: GENERAL DESCRIPTION [Main Title]
Film Number:DRA 281
Other titles:FIVE POINT FIVE INCH AND FOUR POINT FIVE INCH GUNS: PART 1: GENERAL DESCRIPTION [Main Title]
Summary: An instructional military training film describing the workings of the 5.5 inch and 4.5 inch artillery guns, using the 5.5 inch gun to explain the principles of both.
Description: (Reel 1) A brief history of artillery from the twelfth century until the 1940's. Range and size of ammunition displayed of both guns. Detailed mechanical breakdown of 5.5 inch gun. Description of chassis - split trail legs, saddle supporting bracket and axles, wheels, trail eyes, brackets for fixing gun including loading tray, spade housing brackets, cradle clamp inside trail legs, legs locking lever. Diagrams of spring loading locking plungers, movement of axle tree and wheels.
(Reel 2) Detailed mechanics of the superstructure including the saddle and saddle support bracket, traversing hand wheel and the traversing stop. Also of the elevating gear including carry gun and recoil system trunnions, quick loading gear, elevating arc and elevating handwheel.
(Reel 3) Explanation of loading angle, the role of the plungers on the quick loading mechanism, siting system and recoil system. Diagram of this illustrating the loose barrel and the jacket with breech ring and sealing collar. Breech and firing mechanism put in place. Step-by-step guide to removing the barrel to the tune of "Roll out the barrel".
(Reel 4) Inspection of the jacket, cleaning and replacing the barrel. Diagram of trunnions and balancing springs. Adjusting the tension of the springs. Finally a gun in action on a farm in summer.
Alternative Title:FIVE POINT FIVE INCH AND FOUR POINT FIVE INCH GUNS: PART 1: GENERAL DESCRIPTION [Main Title]
