IMPROVEMENTS IN SASH FASTENERS
Year: 1884

page_text: I EDMUND SQUIRE NORCOMBE of 107 Bath Row, Birmingham, in the County
of Warwick-Engineer-do hereby declare the nature of my invention for
IMPROVEMENTS IN SASH FASTENERS to be as follows:-
To the Arm or Lever of Sash Fasteners of the ordinary forms or shape, I attach
by means of a Screw or Rivet, a Shield or Tumbler made of metal-but by
preference of tempered steel which will prevent the Arm or Lever being sawn
through which shield is retained in its place or position by a small spring pressing
against the side of the Arm or Lever, so that it moves only with the Arm or Lever,
and its working parts are not subject to any wear when in ordinary use-for then
the Arm or Lever is opened or closed by the aid of the Handle or Knob. But if
an attempt is made to open it by the insertion of a knife, or other implement
between the sashes, the implement first presses against the Shield or Tumbler, and
a Stud or Pin-forming a part thereof is forced into a straight slot in the Plate
or Bed, which prevents the Arm or Lever being moved. But the Invention will be
better understood by referring to the accompanying sketches.
Fig 1 Represents a plan-A the Arm or Lever moving around the pin I.
B the Shield or Tumbler-attached so as to move easily-to the Arm or Lever A,
by means of the Rivet or Screw B². Ca small spring forming part of the Shield
or Tumbler B. which by pressing against the side of the Arm or Lever, keeps the
end of the Shield or Tumbler off Arm or Lever A which enables the Pin or Stud F
to move in the curved slot D. But on attempting to force back the Lever or Arm
by an implement inserted between the sashes, the press against that part of the
Shield or Tumbler, at or near the point G, the Stud or Pin F will be forced into
the straight Slot H and on reaching the end thereof, will prevent the Arm or Lever
being moved forward. 1' is the Knob or Handle.
Fig 2 is a vertical section.
Fig 3 plan of the Plate or Bed E to show more clearly the form of the slots, D
and H.

page_text: I EDMUND SQUIRE NORCOMBE of 107 Bath Row, Birmingham in the County
of Warwick Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN SASH FASTENERS, to be as follows and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
To the Arm or Lever of Sash Fasteners of the ordinary forms or shape I attach
by means of a Rivet or Screw a Shield or Tumbler made of metal-but by
preference of tempered steel, which will prevent the Arm or Lever being sawn
through, which Shield or Tumbler is retained in its place by a small spring
pressing against the side of the Arm or Lever, so that it-the Shield or Tumbler
moves only with the Arm or Lever and its working parts are not subject to any
wear when in ordinary use. For then the Arm or Lever is opened or closed by
the aid of the Handle or Knob. But if an attempt is made to open it by the
insertion of a knife or other implement between the sashes, the inserted implement
must first press against the Shield or Tumbler and a Stud or Pin forming a part
thereof is forced into a straight slot in the Plate or Bed which prevents the Arm
or Lever being moved. But the invention will be better understood by refering
to the accompanying drawing.
Fig 1 Represents a plan. A the Arm or Lever moving around the pin I.
B the Shield or Tumbler attached-so, as to move easily-to the Arm or Lever A
by means of the Rivet or Screw B². Ca small spring forming part of the shield
or Tumbler B. which by pressing against the side of the Arm or Lever, keeps the
end of the Shield or Tumbler off the Arm or Lever, which enables the pin or stud F
to move freely in the Arc slot D. But if an attempt is made to force back the
Lever or Arm by inserting an implement between the sashes, the implement must
press against that part of the Shield or Tumbler at or near the point G. the Stud
or Pin will be forced into the straight slot H, and on reaching the end thereof, will
prevent the Arm or Lever being moved forwards, and prevents the window being
opened. Fig 2 is a verticle section. Fig 3 plan of Plate or Bed to shew more
clearly the form of the slots D and H. Fig 4 Is a modification, having the spring
at the opposite end of the shield or tumbler.
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 what
I claim as my invention is.
The covering the Lever or Arm of a Sash Fastner with the Shield or Tumbler B
in the manner and for the purpose herein before described.
Dated this 29th day of September 1884.