A train of levers in which motion or force is transmitted from the arm of one lever to that of the next.

Related Terms

PRESENTATION FLANGE

The part of the ships pipeline onto which the reducer is fitted when connecting the loading/discharging hoses/arms prior to cargo operations.

PARALLEL LINKAGE

An automotive steering system that has a short idler arm mounted parallel to the pitman arm.

MASTER/SLAVE MANIPULATOR

A mechanical, electromechanical, or hydromechanical device which reproduces the hand or arm motions of an operator, enabling the operator to perform manual motions while separated from the site of the work.

KNIFE-EDGE

A sharp narrow edge resembling that of a knife, such as the fulcrum for a lever arm in a measuring instrument.

JIB CRANE

Any of various cranes having a projecting arm (jib).

ISOTHERMAL CALORIMETER ISOTENISCOPE

An instrument for measuring the vapor pressure of a liquid, consisting of a U tube containing the liquid, one arm of which connects with a closed vessel containing the same liquid, while the other connects with a pressure gage where the pressure is adjusted until the levels in the arms of the U tube are equal.

DAVIT

A crane arm for handling lifeboats, stores, etc.

INDEX MIRROR

The mirror attached to the index arm of a marine sextant

GOVERNOR SAFETY STOP

On throttling-type governors, the safety stop is a weighted arm that needs the support of a governor belt. If the belt breaks, the idler arm drops and shuts the steam supply valve to the engine. On Corliss units, the flyballs fall to the lowest position and knock off the safety cams; the cams disengage the catch blocks on the steam intake valves so that no steam is admitted to the engine.

BILL

The extremity of the arm of an anchor; the point of or beyond the fluke.

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