The Collaborative International Dictionary
Safety chain \Safety chain\
(Railroads) A normally slack chain for preventing excessive movement between a truck and a car body in sluing.
An auxiliary watch chain, secured to the clothes, usually out of sight, to prevent stealing of the watch.
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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.
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.
Usage examples of "safety chain".
Then he went to remove the safety chain, all of which he had been assured were absolutely necessary to keep fastened at all times if one wished to remain alive in New York City for the better part of an afternoon.
I think the fact that the safety chain was intact is proof that it was an accident.
The door popped open, then stopped as it hit the end of a safety chain.
Adrianna closed the door so she could remove the safety chain, then invited him inside with a smile and a wave of her hand.
Heart pounding, Marisa locked the door, and then slid the safety chain in place.
Angelina said as she double-locked the hall door, put on the safety chain and propped a chair under the handle.
The safety chain was still on and she looked out at Jamie through the narrow opening.