Means for locking threaded nozzles to a fire hydrant

Details Means for locking threaded nozzles to a fire hydrant Means for locking threaded nozzles to a fire hydrant

1977-08-08

1979-02-27

Stein, Mervin

Pipe joints or couplings

With means blocking release of holding means

Thread lock

285 91, 403280, 403355, 403368, 137296, E03B 906, F16B 300, F16B 3902, F16B 4100

Patent

active

041415744

ABSTRACT:
A fire hydrant of either the "dry" barrel type or the "wet" barrel type having an improved means of locking a replaceable hydrant nozzle to the hydrant barrel. The means for locking the hydrant nozzle to the boss of the hydrant barrel prevents removal of the nozzle by unauthorized personnel and it includes an elongated rod member having teeth thereon extending generally transverse of a longitudinal axis of the rod member, the rod member being wedged in a particular manner between the hydrant barrel and the hydrant nozzle after the hydrant nozzle has been inserted therein to a predetermined torque.

REFERENCES:
patent: 692572 (1902-02-01), Wilcox
patent: 799975 (1905-09-01), Criste et al.
patent: 859814 (1907-07-01), Hughes
patent: 1086342 (1914-02-01), Anderson
patent: 2107550 (1938-02-01), Schmidt
patent: 2318590 (1943-05-01), Boynton
patent: 2797109 (1957-06-01), Conrad
patent: 2857635 (1958-10-01), Maple et al.
patent: 3390900 (1968-07-01), McCormick et al.
patent: 3399910 (1968-09-01), Fawkes
patent: 4000753 (1977-01-01), Ellis

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