A hoist is a mechanism that provides a mechanical advantage when raising or lowering heavy loads such as bombs, mines, and torpedoes.

AERO 14C BOMB HOIST

    The Aero 14C bomb hoist consists of a gear train, drum and cable, brake mechanism, fishpole-type extension tube, and two cranks (a ratchet crank and a brake crank). The cable drum rotates in the opposite direction of the cranks. The ratchet crank is used only to help hoist the load. You can disengage it from the gear train by latching a ratchet pawl with a ratchet pawl latch. The brake crank is used to hoist and lower the load. After the load is lifted, a clutch-type brake holds the gear train fast. A spring-loaded roller riding on the top of the cable drum and a cable guide inside the extension tube keep the cable lying firmly in its groove. This condition is also true under a no-load condition.

    At the end of the extension tube, a swiveling clevis, which is used for hook suspension, couples the hoist to the bomb rack being loaded. The swiveling clevis lets you operate the hoist from different points on the ground. A tube clamp permits rotation of the cranking mechanism to any position around the extension tube.

    The Aero 14C bomb hoist is used to hoist various weapons. This hoist is also used for maintenance of aircraft such as engine removal and installation and for loading/unloading operations of various aircraft stores. The hoist cable is attached to the load by putting a pin through the clevis. When you rotate the ratchet and brake cranks in a clockwise direction, the load is hoisted. When you rotate the brake crank in a counterclockwise direction, it lowers the load. The Aero 14C bomb hoist is used with a variety of hoisting beams, adapters, and trolleys.

HLU-196B/E BOMB HOISTING UNIT

    The HLU-196B/E bomb hoisting unit 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 4,00 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 You can extend the cable by disengaging the clutch and manually pulling it until the necessary length is withdrawn.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. Maximum reel-in speed of the cable is 15 feet per minute.

    The HLU-196B/E is used to single or, by the use of various trolleys and adapters, double hoist various weapons and stores.

HOISTING BANDS

    Hoisting bands are used to encircle a load and provide a means for attaching hoisting equipment or other handling equipment. The hoisting bands are steel straps with either one or two points used to attach them to the hoist equipment.

    There are three different bands available-the short light-gauge hoisting band (HLK-275/F32K-5), the long light-gauge hoisting band (HLK-276/F32K-5), and the heavy-gauge hoisting band (HLK-277/F32K-5). These bands can be arranged for single or double point hoisting.

    There are many different types of hoisting bands available, but the hoisting bands described above are predominately used throughout the aviation ordnance field. They are used in conjunction with the Aero 14C and HLU-196B/E bomb hoists during aircraft loading operations.