Improvements in or relating to Window Sash Fasteners.
Year: 1897

page_text: Improvements in or relating to Window Sash Fasteners.
I, JAMES WOOD, of 10, College Road, Maidstone, in the County of Kent, Retired
Smith, do hereby declare the nature of this invention to be as follows:-
This invention relates to sash fasteners of which the one member comprises a
pivoted lever and the other a tongue or catch under which such lever may be swung
when the sashes are closed and the fastening secured. To avoid the thrusting
back of this lever from outside the window I provide in a recess in the plate under
the catch a spring carrying a tooth one face of which is inclined to permit the
lever to ride over and depress the tooth when it enters the catch, such tooth
A stud for depress-
subsequently rising behind the lever and locking the latter.
ing the spring is provided, and to guard this stud a shield is made on this member of
the fastener so that the stud cannot be tampered with by an instrument inserted
between the sashes, but may be readily accessible from within when the fastener
is to be opened.
HERBERT HADDAN & Co.,
Agents to Applicant.
improvements in or relating t
I, JAMES WOOD, of 10, College Road, Maidstone, in the County of Kent, Retired
Smith, 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:―
This invention relates to sash fasteners of which the one member comprises a
pivoted lever and the other a tongue or catch plate into engagement with which
such lever may be swung when the sashes are closed and the fastening secured.
To avoid the thrusting back of this lever from outside the window I provide in a
recess in the plate which engages the catch a spring carrying a tooth one face of
which is inclined to permit the lever to ride past and press back the tooth when it
enters the catch such tooth subsequently moving behind the cover and locking the
latter. A stud or projection is provided for pressing back the spring when the
fastener is to be undone and to guard this stud or projection a shield may be made
on this member of the fastener so that the stud or projection cannot be tampered
with by an instrument inserted between the sashes, but may be readily accessible
from within when the fastener is to be opened.

page_text: The annexed drawing shows a fastener of this nature; Fig. 1 being a plan view
of the same and Fig. 2 a cross section on the line 2-2 of Fig. 1.
a is a lever bolt pivoted at a¹ in the member A and is a slot in the plate b
forming the member B into which the hook a² on the under side of lever a moves
when the fastener is closed, c is a spring fastened at c¹ and having a nose c³ adapted
to spring behind and lock the hook a³ of the lever a, when the latter is in its
locking position.
The spring is extended at c³ to form a projection by which the spring may be
drawn back by hand to release the lever a. d is a guard piece on the member B
which may be omitted if desired.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is: -
In a window sash fastener of the nature described the combination with the
lever and its catch plate of a spring having a nose adapted to lock the lever in its
closed position said spring being suitably provided with a projection or stud for
pressing it out of engagement with the lever for releasing the latter, the whole
substantially as set forth.
Dated this 12th day of February 1808
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, London.