instant lock

instant lock

A lock which is actuated automatically (by a spring) as the door is closed.
References in classic literature ?
And the two gentlemen were for an instant locked in each other's arms; then Athos, looking into his friend's face and taking him by both hands, said:
Vertical Instant Lock is designed to securely affix stone and other hardscape materials to vertical surfaces in under five seconds.
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Remember, I love you." His eyes flew open, and for an instant locked with mine, then he closed his eyes again, dropped his head to the side and died.