Compound lever

Compound lever
Lever Le"ver (l[=e]"v[~e]r or l[e^]v"[~e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate}, {Leaven}, {Legerdemain}, {Levee}, {Levy}, n.] 1. (Mech.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures. [1913 Webster]

2. (Mach.) (a) A bar, as a capstan bar, applied to a rotatory piece to turn it. (b) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it. [1913 Webster]

{Compound lever}, a machine consisting of two or more levers acting upon each other.

{Lever escapement}. See {Escapement}.

{Lever jack}. See {Jack}, n., 5.

{Lever watch}, a watch having a vibrating lever to connect the action of the escape wheel with that of the balance.

{Universal lever}, a machine formed by a combination of a lever with the wheel and axle, in such a manner as to convert the reciprocating motion of the lever into a continued rectilinear motion of some body to which the power is applied. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • compound lever —   n.    a lever tumbler that has two or more distinct sweeps contacted by two or more different keys …   Locksmith dictionary

  • Lever — Le ver (l[=e] v[ e]r or l[e^]v [ e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate},… …   The Collaborative International Dictionary of English

  • Lever escapement — Lever Le ver (l[=e] v[ e]r or l[e^]v [ e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate} …   The Collaborative International Dictionary of English

  • Lever jack — Lever Le ver (l[=e] v[ e]r or l[e^]v [ e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate} …   The Collaborative International Dictionary of English

  • Lever watch — Lever Le ver (l[=e] v[ e]r or l[e^]v [ e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate} …   The Collaborative International Dictionary of English

  • Compound control — Com pound con*trol (A[ e]ronautics) A system of control in which a separate manipulation, as of a rudder, may be effected by either of two movements, in different directions, of a single lever, etc. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

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  • Universal lever — Lever Le ver (l[=e] v[ e]r or l[e^]v [ e]r; 277), n. [OE. levour, OF. leveor, prop., a lifter, fr. F. lever to raise, L. levare; akin to levis light in weight, E. levity, and perh. to E. light not heavy: cf. F. levier. Cf. {Alleviate}, {Elevate} …   The Collaborative International Dictionary of English

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