I used to trip over these daily while working aboard aircraft carriers in the US Navy.
HLU-196B/E BOMB HOISTING UNIT The HLU-196B/E bomb-hoisting unit (fig. 9-23) is a lightweight, portable, gasoline, engine-driven unit. It consists of a gasoline engine, speed-reducing gearbox and brake, and a cable assembly and storage drum that incorporates a clutch and a boom. All components and controls are mounted on a two-wheeled frame assembly. The entire unit weighs 75 pounds. It has a direct, single-cable lift capacity of 2,000 pounds. A double-cable lift capacity of 4,000 pounds is obtainable by using various trolleys and rack adapters that are available. You can extend the cable by disengaging the clutch and manually pulling it until the necessary length is withdrawn. To reel the cable in, you must start the engine, engage the clutch, and carefully throttle the engine to control the reel-in speed of the cable.
http://navyaviation.tpub.com/14313/css/Hlu-196B-E-Bomb-Hoisting-Unit-209.htm