(under subclass 82) Traps of the direct-engaging latch type in which the latch is so made that when the striker is swung back to the set position the latch automatically catches or engages with the striker to hold it in that position without any aid from the operator.
(1) Note. The inaccurately-styled "self-setting" impaling traps are classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
83.5, for similarly operated latching elements not of the direct-engaging type.