Found 2 items, similar to Safety lamp.
English → English
Definition: safety lamp
n : an oil lamp that will not ignite flammable gases (methane)
[syn: Davy lamp
English → English
Definition: Safety lamp
(l[a^]mp), n. [F. lampe, L. lampas, -adis, fr. Gr.
?, ?, torch, fr. ? to give light, to shine. Cf. Lampad
1. A light-producing vessel, device, instrument or apparatus;
formerly referring especially to a vessel with a wick used
for the combustion of oil or other inflammable liquid, for
the purpose of producing artificial light; also, a similar
device using a gas as the combustible fuel; now referring
mainly to an electric lamp. See sense .
[1913 Webster +PJC]
2. Figuratively, anything which enlightens intellectually or
morally; anything regarded metaphorically a performing the
uses of a lamp.
Thy word is a lamp unto my feet, and a light unto my
path. --Ps. cxix.
Ages elapsed ere Homer's lamp appeared. --Cowper.
3. (Elec.) A device or mechanism for producing light by
electricity, usually having a glass bulb or tube
containing the light-emitting element. Most lamps belong
to one of two categories, the Incandescent lamp
) or the fluorescent lamp
see also arc lamp
[1913 Webster +PJC]
4. A device that emits radiant energy in the form of heat,
infrared, or ultraviolet rays; as, a heat lamp.
, a hollow ball of copper containing
alcohol which is converted into vapor by a lamp beneath,
so as to make a powerful blowpipe flame when the vapor is
(Elec.), a form of lamp in which the voltaic arc
is used as the source of light.
, an apparatus for the instantaneous
production of a flame by the spontaneous ignition of a jet
of hydrogen on being led over platinum sponge; -- named
after the German chemist D["o]bereiner, who invented it.
Called also philosopher's lamp
, an aphlogistic lamp.
, the part of a lamp where the wick is exposed
and ignited. --Knight.
, a reservoir for oil, in a lamp.
. See 2d Jack
, n., 4
, a screen, as of paper, glass, or tin, for
softening or obstructing the light of a lamp.
(Zo["o]l.), any brachiopod shell of the genus
and allied genera. The name refers to the
shape, which is like that of an antique lamp. See
, a miner's lamp in which the flame is
surrounded by fine wire gauze, preventing the kindling of
dangerous explosive gases; -- called also, from Sir
Humphry Davy the inventor, Davy lamp
To smell of the lamp
, to bear marks of great study and
labor, as a literary composition.
Safety chain \Safety chain\
(a) (Railroads) A normally slack chain for preventing
excessive movement between a truck and a car body in
(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.]
(Arch.), a discharging arch. See under
, v. t.
, 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.
, a buoy to enable a person to float in water; a
(Mach.), a cage for an elevator or mine lift,
having appliances to prevent it from dropping if the
lifting rope should break.
. (Mining) See under Lamp
, a match which can be ignited only on a
surface specially prepared for the purpose.
, a pin made in the form of a clasp, with a guard
covering its point so that it will not prick the wearer.
. See Fusible plug
, under Fusible
. See Switch
(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
(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.
, 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.