1. A horizontal cylinder about which rope or wire rope is wound in a hoisting mechanism. 2. A hollow or solid cylinder or barrel that acts on, or is acted upon by, an exterior entity, such as the drum in a drum brake. Also known as hoisting drum.


Related Terms

WHIPPING

Means of fixing a fibre rope so that the strands will not unravel. On wire rope it is called seize or wrap. Used tape or light wire. Can braze end of wire if going through drum or winch and take wire off.

BULLET

  1. A conical-nosed cylindrical weight, attached to a wire rope or line, either notched or seated to engage and attach itself to the upper end of a wire line core barrel or other retrievable or retractable device that has been placed in a borehole. Also known as bug; godevil; overshot. 2. A scraper with self-adjusting spring blades, inserted in a pipeline and carried forward by the fluid pressure, clearing away accumulations or debris from the walls of a pipe. Also known as go-devil. 3. A bullet-shaped weight or small explosive charge dropped to explode a charge of nitroglycerin placed in a borehole. Also known as go-devil. 4. An electric lamp covered by a conical metal case, usually at the end of a flexible metal shaft. 5. See torpedo.

BIRDCAGED WIRE

Wire rope whose strands have been distorted into the shape of a birdcage by a sudden release of a load during a hoisting operation.

CARGO WINCH

A motor-driven hoisting machine for cargo having a drum around which a chain or rope winds as the load is lifted.

TYE

A chain or rope used for hoisting or lowering a yard. A tye runs from the horizontal center of a given yard to a corresponding mast and from there down to a tackle. Sometimes specifically called a chain tye or a rope tye.

WORM PARCEL AND SERVE

Protecting a wire or rope by worm, parcelling and serving. Small tarred stuff is wound into the grooves of the lay to give the rope a smooth surface (worming). Tarred canvas is then wound around the smooth surface (parcelling). Finally a tarred seizing of thin wire or twine is tightly wound around all using a serving mallet to apply tension (serving).

AUXILIARY ROPE-FASTENING DEVICE

A device attached to an elevator car, to a counterweight, or to the overhead dead-end rope-hitch support, that automatically supports the car or counterweight in case the fastening for the wire rope (cable) fails.

BARREL BUOY

A buoy having the shape of a barrel or cylinder floating horizontally, usually for special purposes, including mooring.

SNOTTER

A wire or rope with eyes in each end for cargo work.

CROSS DRUM BOILER

A sectional header or box header type of boiler in which the axis of the horizontal drum is perpendicular to the axis of the main bank of tubes.

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