Automatic surface bolt

Details Automatic surface bolt Automatic surface bolt

1975-09-15

1976-11-23

Moore, Richard E.

Closure fasteners

Trippers

E05C 114

Patent

active

039933377

ABSTRACT:
An automatic surface bolt for doors swinging in pairs having a stop to hold the active door open until the inactive door is closed and a top bolt which is actuated by movement of the stop to lock the inactive door as the active door completes its closing movement, the inactive door having also a bottom bolt arranged to be actuated by the top bolt so that the door is bolted top and bottom when both doors are closed; both bolts holding the inactive door are automatically released when the active door is opened.

REFERENCES:
patent: 1071656 (1913-08-01), Voight
patent: 1674760 (1928-06-01), Carroll
patent: 3894356 (1975-07-01), Amhoff

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