Adjustable chain door guard

Closure fasteners – Extension link – Chain

Patent

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Details

E05C 1736

Patent

active

040799735

ABSTRACT:
A chain door guard which is constructed in a manner so that the chain coupler element can be set into a position of the slot member wherein the chain has limited slack. The coupler element, when positioned in the slot member that keeps the chain substantially taut, limits the opening of the door to a minimal distance. Limiting the opening of the door to a minimal distance will provide greater protection of the premises for it will not allow sufficient open space between the door and the door frame, when the door is opened, to allow a chain cutter or jimmy to be used in cutting or breaking the chain. In addition, the construction of this chain guard provides for a person to alternatively set the chain coupler element into the long slot of the slide bracket. Thus the chain will have a maximum of slack in this disposition of the coupler element, thus allowing the door to be opened sufficiently for the occupant of the premises to see and converse with someone standing at the outside of the door.

REFERENCES:
patent: 252309 (1882-01-01), Goebel
patent: 2076605 (1937-04-01), West
patent: 3920273 (1975-11-01), Scholtze

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