AN IMPROVED MEANS AND APPLIANCE FOR LOCKING THE LEVERS OF WINDOW CATCH FASTENERS
Year: 1884

page_text: I GEORGE GUY of 11 Lismore Road, Haverstock Hill, Middlesex, Telegraph
Engineer, do hereby declare the nature of my said invention for "AN IMPROVED
MEANS AND APPLIANCE FOR LOCKING THE LEVERS OF WINDOW CATCH FASTENERS,"
to be as follows:-
:
The object of my invention is to so fit a drop paul or stud lever within a notch.
which I form in the catch guard that one end of the lever may drop or fall in
front of the catch lever and lock it securely when the catch lever is shut to. The
invention is applicable to all existing swing lever catch fasteners and when in.
position all attempts to open the lever from the outside are absolutely prevented.
For the purpose of my invention I notch or recess the catch guard from the end
or near the end and drill a hole through the fork or two arms thus formed. I then
hinge or otherwise secure, loosely, a stud lever whose inner end is heavier than the
outer end so as to fall in front of the catch lever when said catch lever has been.
pushed home the stud lever lifting freely to permit of this being done. When
the weighted end of the locking lever is down in front of the catch lever the
opposite or free end stands sufficiently above the level of the guard as to be easily
depressed to lift the weighted end clear of the catch lever when the window has.
to be opened.
The guard thus prepared can be affixed to all-windows without removing tho
back plate or catch lever from the sash.
H. GARDNER,
166, Fleet Street, London,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
I GEORGE GUY of 11 Lismore Road Haverstock Hill London in the County of
Middlesex Telegraph Engineer do hereby declare the nature of my invention for
AN IMPROVED MEANS AND APPLIANCE FOR LOCKING THE LEVERS OF WINDOW
CATCH FASTENERS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
.
The object of my invention is to so fit a drop paul or stud lever within a notch
which I form in the catch guard that one end of the lever may drop or fall in
front of the catch lever and lock it securely when the catch lever is shut to―The
invention is applicable to all existing swing lever catch fasteners and when in
position all attempts to open the lever from the outside are absolutely prevented-
For the purpose of my invention I notch or recess the catch guard from the end or
near the end and drill a hole through the fork or two arms thus formed-I then
hinge or otherwise secure loosely a stud lever whose inner end is heavier than the
outer end so as to fall in front of the catch lever when said catch lever has been
pushed home the stud lever lifting freely to permit of this being done-When the
weighted end of the locking lever is down in front of the catch lever the opposite
or free end stands sufficiently above the level of the guard as to be easily depressed
to lift the weighted end clear of the catch lever when the window has to be
opened The guard thus prepared can be affixed to all windows without removing
the back plate or catch lever from the sash.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that which
I claim is
1. The drop paul or stud lever on the plan herewith marked A which falls or
drops into the notch or recess on the plan marked B which together forms the
drawing on the plan marked C.