Heavy duty security lock

Details Heavy duty security lock Heavy duty security lock

1980-04-14

1981-11-17

Frazier, Roy D.

Closure fasteners

Bolts

Swinging

292DIG46, 292281, E05C 304

Patent

active

043007937

ABSTRACT:
A heavy duty security lock is shown that is easy to install to an existing movable closure for holding the closure in a closed position relative to a fixed enclosure. An important feature is the ease of mounting this security lock between the door and the door jamb. In order to prepare the door for receiving this lock, it should have a through hole near the vertical free edge of the door similar to the through hole for receiving a standard cylinder lock on the order of about two and one-eighth inches in diameter. The present invention incorporates a base plate having a perpendicular locking tongue fitted with a shortened collar that is mounted within the through hole in the door. An adjustable locking means engages the collar and fastens the base plate to the door. The locking tongue has a transverse hole. A second element is an eyebolt with a looped head that is mounted into the side of the door jamb so that the looped head is in alignment with the transverse hole in the locking tongue for receiving a padlock therethrough. Other modifications include a two-piece eyebolt or an eyebolt of L-shaped configuration.

REFERENCES:
patent: 277879 (1883-05-01), Burkhardt
patent: 878047 (1908-02-01), Darracott
patent: 1049381 (1913-01-01), Martineau
patent: 1195493 (1916-08-01), Nedrow
patent: 1197585 (1916-09-01), Archibald
patent: 1508091 (1924-09-01), Diesel
patent: 3094861 (1963-06-01), Sayles
patent: 3759557 (1973-09-01), Athas
patent: 3852981 (1974-12-01), Koning

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