Safety switch
Switch Switch, n. [Cf. OD. swick a scourage, a whip. Cf. {Swink}, {Swing}.] 1. A small, flexible twig or rod. [1913 Webster]

Mauritania, on the fifth medal, leads a horse with something like a thread; in her other hand she holds a switch. --Addison. [1913 Webster]

2. (Railways) A movable part of a rail; or of opposite rails, for transferring cars from one track to another. [1913 Webster]

3. A separate mass or trees of hair, or of some substance (at jute) made to resemble hair, worn on the head by women. [1913 Webster]

4. (Elec.) A device for shifting an electric current to another circuit, or for making and breaking a circuit. [Webster 1913 Suppl.]

{Safety switch} (Railways), a form of switch contrived to prevent or lessen the danger of derailment of trains.

{Switch back} (Railways), an arrangement of tracks whereby elevations otherwise insurmountable are passed. The track ascends by a series of zigzags, the engine running alternately forward and back, until the summit is reached.

{Switch board} (Elec.), a collection of switches in one piece of apparatus, so arranged that a number of circuits may be connected or combined in any desired manner.

{Switch grass}. (Bot.) See under {Grass}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Safety switch — Safety chain Safety chain (a) (Railroads) A normally slack chain for preventing excessive movement between a truck and a car body in sluing. (b) An auxiliary watch chain, secured to the clothes, usually out of sight, to prevent stealing of the… …   The Collaborative International Dictionary of English

  • safety switch — See neutral safety switch park safety switch …   Dictionary of automotive terms

  • safety switch — apsauginis išjungiklis statusas T sritis radioelektronika atitikmenys: angl. emergency switch; protective switch; safety switch vok. Schutzschalter, m; Sicherheitsschalter, m rus. предохранительный выключатель, m pranc. interrupteur de sécurité,… …   Radioelektronikos terminų žodynas

  • safety switch — apsauginis jungiklis statusas T sritis automatika atitikmenys: angl. safety switch vok. Sicherheitsschalter, m rus. защитный выключатель, m; предохранительный выключатель, m pranc. interrupteur de sécurité, m; interrupteur de secours, m …   Automatikos terminų žodynas

  • safety switch — noun : an electric switch completely enclosed in a metal box with an external control handle and so designed that the box cannot be opened while the switch is closed and the switch cannot be closed while the box is open …   Useful english dictionary

  • landing gear safety switch — A switch in the landing gear that prevents the inadvertent retraction of landing gear on the ground. This switch usually is located in the port landing gear. There is, however, a provision for overriding the switch so that the landing gear can be …   Aviation dictionary

  • neutral safety switch — A switch which allows the starter to be engaged only when the automatic shift lever is in either park or neutral …   Dictionary of automotive terms

  • park safety switch — A switch which allows the starter to be engaged only when the automatic shift lever is in either park or neutral …   Dictionary of automotive terms

  • Safety arch — Safety chain Safety chain (a) (Railroads) A normally slack chain for preventing excessive movement between a truck and a car body in sluing. (b) An auxiliary watch chain, secured to the clothes, usually out of sight, to prevent stealing of the… …   The Collaborative International Dictionary of English

  • Safety belt — Safety chain Safety chain (a) (Railroads) A normally slack chain for preventing excessive movement between a truck and a car body in sluing. (b) An auxiliary watch chain, secured to the clothes, usually out of sight, to prevent stealing of the… …   The Collaborative International Dictionary of English

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