Safety chain
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A normally slack chain for preventing excessive movement between a truck and a car body in sluing. (Railroads)
Phrases & Compounds
- Safety arch
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a discharging arch.
- Safety belt
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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
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a buoy to enable a person to float in water; a safety belt.
- Safety cage
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a cage for an elevator or mine lift, having appliances to prevent it from dropping if the lifting rope should break.
- Safety lamp
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See under Lamp.
- Safety match
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a match which can be ignited only on a surface specially prepared for the purpose.
- Safety pin
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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
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See Fusible plug, under Fusible.
- Safety switch
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See Switch.
- Safety touchdown
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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
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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
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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.