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 watch. (c) A chain of sheet metal links with an elongated hole through each broad end, made up by doubling the first link on itself, slipping the next link through and doubling, and so on. [Webster 1913 Suppl.]

{Safety arch} (Arch.), a discharging arch. See under {Discharge}, v. t.

{Safety belt}, a belt made of some buoyant material, or which is capable of being inflated, so as to enable a person to float in water; a life preserver.

{Safety buoy}, a buoy to enable a person to float in water; a safety belt.

{Safety cage} (Mach.), a cage for an elevator or mine lift, having appliances to prevent it from dropping if the lifting rope should break.

{Safety lamp}. (Mining) See under {Lamp}.

{Safety match}, a match which can be ignited only on a surface specially prepared for the purpose.

{Safety pin}, a pin made in the form of a clasp, with a guard covering its point so that it will not prick the wearer.

{Safety plug}. See {Fusible plug}, under {Fusible}.

{Safety switch}. See {Switch}.

{Safety touchdown} (Football), the act or result of a player's touching to the ground behind his own goal line a ball which received its last impulse from a man on his own side; -- distinguished from touchback. See {Touchdown}. Same as {safety}

{Safety tube} (Chem.), a tube to prevent explosion, or to control delivery of gases by an automatic valvular connection with the outer air; especially, a bent funnel tube with bulbs for adding those reagents which produce unpleasant fumes or violent effervescence.

{Safety valve}, a valve which is held shut by a spring or weight and opens automatically to permit the escape of steam, or confined gas, water, etc., from a boiler, or other vessel, when the pressure becomes too great for safety; also, sometimes, a similar valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, to prevent collapse. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • 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 …   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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