Safety lamp

Safety lamp
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.

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  • Safety lamp — Lamp Lamp (l[a^]mp), n. [F. lampe, L. lampas, adis, fr. Gr. ?, ?, torch, fr. ? to give light, to shine. Cf. {Lampad}, {Lantern}.] 1. A light producing vessel, device, instrument or apparatus; formerly referring especially to a vessel with a wick… …   The Collaborative International Dictionary of English

  • safety lamp — n. a miner s lamp designed to avoid explosion, fire, etc.: see also DAVY LAMP …   English World dictionary

  • safety lamp — n a special lamp used by ↑miners, with a flame which will not make underground gases explode …   Dictionary of contemporary English

  • Safety lamp — A safety lamp is any of several types of lamp, which are designed to be safe to use in coal mines. These lamps are designed to operate in air that may contain coal dust, methane, or firedamp, all of which are potentially flammable or explosive… …   Wikipedia

  • safety lamp — a miner s lamp in which the flame is protected by wire gauze to prevent the immediate ignition of explosive gases. [1810 20] * * * ▪ coal mining       lighting device used in places, such as mines, in which there is danger from the explosion of… …   Universalium

  • safety lamp — noun an oil lamp that will not ignite flammable gases (methane) • Syn: ↑Davy lamp • Hypernyms: ↑oil lamp, ↑kerosene lamp, ↑kerosine lamp * * * ˈsafety lamp f15 [safety lamp …   Useful english dictionary

  • SAFETY LAMP —    name of a variety of lamps for safety in coal mines against fire damp, a highly explosive mixture of natural gas apt to accumulate in them; the best known being the Davey Lamp, invented by Sir Humphrey Davy; the Geordie, invented by George… …   The Nuttall Encyclopaedia

  • safety lamp — light used to ensure safety, emergency lamp …   English contemporary dictionary

  • safety lamp — safe′ty lamp n. min a miner s lamp in which the flame is protected by wire gauze to prevent the ignition of explosive gases • Etymology: 1810–20 …   From formal English to slang

  • safety lamp — /ˈseɪfti læmp/ (say sayftee lamp) noun a miner s lamp in which the flame is protected by wire gauze, thus preventing immediate ignition of explosive gases …  

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