IMPROVEMENTS IN WINDOW FASTENINGS, SELF-ACTING AND OTHERWISE
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by William Edward Partridge at tho
Office of the Commissioners of Patents on the 31st March 1877.
WILLIAM EDWARD PARTRIDGE, of Birmingham, in the County of Warwick,
Gun Action Filer. IMPROVEMENTS IN WINDOW FASTENINGS, SELF-ACTING AND
OTHERWISE."
"
This Invention has for its object improvements in window fastenings, which are
made both self-acting and otherwise.
The window fastenings (sometimes called sash fastenings) now generally in
use are not self-acting, and thus the window may be shut and left unsecured.
The first part of my Invention consists in applying a spring bolt, or spring lock,
or spring latch to windows for the purpose of making them self-securing when the
window is closed.
The second part of my Invention consists in giving a second action to the bolt or
lock for the purpose of drawing the two parts of the window closely together to
make them dust-tight, and to keep them from shaking; for this purpose I form the
front end of the bolt with one or more projections which pass into the staple when
the window is closed. I then turn the bolt upon its axis, the neck of the bolt knob
or handle working in a diagonal slot formed in the bolt case, and thus the pro-
jection or projections on the point of the bolt are brought behind the staple or
socket, and as the bolt handle travels down the slot the two sashes are brought
close together. In some cases I fix the bolt handle near the end of the bolt and
form the outside end of the bolt case inclined to draw the sashes together. I also
form a recess at the bottom part of the incline into which the neck of the bolt
handle springs, securing it, when desired, against being easily moved back. On the
other side of the bolt socket I generally form a slot, square with the bolt, so that
the bolt may be drawn back and turned into this slot when the window is being
cleaned to stop the bolt from acting. These bolts, locks, or latches, may be used of
any known action, and may be made of any desired shape, but I generally prefer a
round bolt, reduced at the back end to receive a spiral spring. These fastenings can
be made of any metal or material suitable.
The third part of my Invention consists in forming a lip on the hand lever of
the present ordinary window fastenings, and in fixing the curved guard under
which the lever passes in such a position that the projection on the lever will
gradually draw the two sashes together as the lever is turned round, that is, the
077

page_text: back of the guard would be accentric to the curve made by the lever handle. I
also form a recess at the under side of the guard at the furthest end, into which
the handle springs for the purpose of securing it against being easily unfastened.
The fourth part of my Invention consists in applying a supplementary staple
which would generally turn down flat upon the back sash, but when desired, this 5
staple, having one or more holes, could be turned up so as to allow the window to
be locked up at any desired position, or this object could be attained by fixing a
plate with a number of bolt holes at different elevations to a cross bar.