Pulley in the block


Related Terms

PLUG-AND-FEATHER HOLE

A hole drilled in quarries for the purpose of splitting a block of {

PERMISSIVE BLOCK SYSTEM

A block system in which a railroad train is permitted to enter a block section already occupied by a train.

NAILER

A wood strip or block which serves as a backing into which nails can be driven.

MULTIPLE-LOOP SYSTEM

A system whose block diagram has at least two closed paths, along each of which all arrows point in the same direction.

METER WHEEL

A special block used to support the oceanographic wire paid out over the side of a ship; attached directly or connected by means of a speedometer cable to a gearbox which measures the length of wire.

LIMELIGHT

A light source once used in spotlights; it consisted of a block of lime heated to incandescence by means of an oxyhydrogen flame torch.

LENGTH OF SHOT

The depth of the shot hole, in which powder is placed, or the size of the block of coal or rock to be loosened by a single blast, measured parallel with the hole.

KEEL BLOCK

A docking block used to support a ship's keel.

JOHANSSON BLOCK

A type of gage block ground to an accuracy of at least 1/100,000 inch (0.25 micrometer). Also known as Jo block.

HOME SIGNAL

A signal at the beginning of a block of railroad track that indicates whether the block is clear.

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