Year: 1887

page_text: Date of Application, 5th July, 1887
Complete Left, 21st Jan., 1888
Complete Accepted, 13th Apr., 1888
CHARLES DOUGLAS NORTON of 17 Arthur Road Stoke Newington Middlesex Builder
do hereby declare the nature of this invention to be as follows:
This invention has for its object the improvement of the ordinary window fastener
or catch and consists in attaching to the underside of the catch a plate of metal which
is secured loosely by a rivet on the outside bedplate. This metal plate lus a heart or
shaped slot hole which is worked by a pin or key projection on the underside of the
shaft or crank. When the window is required to be fastened the catch or shaft is
worked in the ordinary manner at the same time the pin works in the slot hole and
throws the plate to the front of the left side and over the joint of the meeting rails of
the sashes thereby preventing the fastening being in any way tampered or interfered
with from the outside.

page_text: COMPLETE SPECIFICATION.
Improvements in Window Fasteners or Catches.
1 CHARLES DOUGLAS NORTON of 17 Arthur Road Stoke Newington in the county
of Middlesex Builder do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention has for its object an improvement on the ordinary window or sash
fastener or catch to prevent the possibility of the arm of the sash fastener being
pushed back by any person on the outside of the window by means of a knife or any
other instrument to enable them to open the window to make an entrance as the said
fastener is fitted with a safety guard. This invention consists of attaching to the
underside of the leg of the sash fastener a plate of metal which is secured loosely by a
rivet which rivet acts as a pivot pin for the plate to work on and is fixed on the right
hand of the outside bed plate this aforesaid metal plate is bent or turned up at the
other end like the letter shape which is worked by a slot hole formed to fit the foot
portion of the lever leg and worked by a pin or key projection on the underside of the
arm. When the window is required to be fastened the leg is worked in the ordinary
manner and at the same time the pin works in the slot hole of the plate and throws
the plate to the front on the left side and over the joint of the meeting rails of the
sashes thereby preventing the fastening being in any way tampered or interfered with
from the outside.
If preferable 1 can hinge the guard or plate and attach a tongue piece constructed
so that the leg will when required to open or release the sashes come in contact
and throw the guard out of gear when required. This invention may be fixed to
any ordinary sash fastener. And in order that my invention may be thoroughly
understood now proceed the describe the accompanying drawings thereof reference
being had to letters and figures marked thereon.
Figure 1 represents the sash fastener in its locking position with guard or plate A
and the guard part B, worked on the pivot C. Figure 2. the plan of the plate A
the guard part-B. Figure 3 the side view of figure 2. Figure 4 the end B. of
figure 2. Figure represents the guard plate A hinged J with a tongue piece K to
permit the leg F to strike against and throw the guard plate out of gear the fastener
being open. Figure 6 denotes the fastener closed with the guard plate in its fixed
position.
Like letters refer to like to like parts in each of the figures. A the plate or
guard B the guard portion of the plate. the pivot D the meeting rails F the leg
& the knob H the catch I the rose J the knuckle of the hinge K. the tongue.
Having now fully described the nature and object of my invention and the
manner in which the same is to be performed I claim as new and novel the
following:
First. The combination of a metal plate A fixed to a sash fastener by a rivet C
which rivet acts as a pivot pin which the plate works on and the plate with the slot hole

page_text: for the pin on the underside of the leg to throw in or out of gear to permit the turned
up portion marked B. to act as a safe guard against all contrivances for opening the
window from the outside substantially herein described and according to the
accompany drawings.
Secondly. The combination of the guard B. of the plate A hinged to the plate or
outside bed plate and worked out of gear by means of a tongue K fixed to the knuckle
of the hinge J, and when fastened in its stationary position is a sure protection against
anyone tampering with the fastener to open the window substantially herein described
and according to the accompanying drawings.