Improved Method of and Means for Automatically Locking Sliding Windows at Different Heights.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Method of and Means for Automatically Locking Sliding
Windows at Different Heights.
We, WILLIAM THOMPSON HEAD, of Ferndale House, Chomley Street, Superin-
tendent Engineer, and NILS PETER NIELSEN, of Harrow Street, Hessle Road,
Engineer, both in Hull, in the County of Yorkshire, do hereby declare the nature
of this invention to be as follows:-
The object of our invention is to provide an improved method of and means
for locking or binding sliding windows at different heights whereby such windows
can be raised and lowered from the inside and securely locked at different points
in such a manner that they cannot be opened from the outside without the glass
having first been broken.
For the purpose of our invention we employ an automatic locking device which
is attached to the side recesses of the window in which the window frames proper
containing the glass, slide.
This locking device consists of a catch preferably with a rounded face and
straight back and having a projection on its tail which projection rests on an articu-
lated lever; a preferably V shaped spring is also employed one end of which rests
on a lip on the catch aforesaid.
The catch, lever and spring preferably work within a box mounted on a face
plate and having a cap or cover which may have a hole in it to take the tail of
the catch for which it acts as a guide, one end of the V spring bearing against
the inside of such cover.
Through the box a pin is passed such pin having a lip formed on it, this lip
lying under the articulated lever, the pin being employed for releasing the window
when locked.
The side of each window frame proper is provided with any desired number
of recesses at suitable distances apart, and for preventing the woodwork wearing a
metal plate may be fixed to such window frames, such plate having recesses in it.
It will be understood that in place of fixing the locking device to the recess in
which the window frame slides and forming the recesses in such window frame,
the locking device may be fitted to the window frame and the recesses formed in
the recesses which take the window frames, and the recessed plate fixed therein
instead of to the window frame.
The action is as follows: As the top or bottom parts of the window are raised
or lowered respectively the catches of the locking devices slip into the recesses
provided to receive them and so securely lock the window, the rounded part of
the catch being upward in the case of the halves of windows which have to be
raised, and the straight part being upward in the case of the halves of windows
which have to be lowered, the rounded face only allows of the closing of the

page_text: window the straight part acting as a bar against it being opened, the pin having
to be turned to release the catch before the window can be opened.
Dated this Fifth day of August 1899.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicants.
Improved Method of and Means for Automatically Locking Sliding
Windows at Different Heights.
We, WILLIAM THOMPSON HEAD, of Ferndale House, Cholmley Street, Superin-
tendant Engineer, and NILS PETER NIELSEN, of Harrow Street, Hessle Road,
Engineer, both in Hull, in the County of Yorkshire, do hereby declare the nature
of this invention, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
:-
The object of our invention is to provide an improved method of and means
for locking or binding sliding windows at different heights, whereby such windows
can be raised and lowered from the inside, and securely locked at different points
in such a manner that they cannot be opened from the outside without the glass
having first been broken.
DESCRIPTION OF DRAWINGS.
Fig. 1 represents a front view of a window and side frames with parts removed
to more clearly show locking device.
Fig. 2 represents a view of one side of a window frame with two locks fitted
therein.
Fig. 3 is a side view of one of the window sashes showing recesses for catch
to engage with.
Fig. 4 is a view of back of a double lock with caps removed to show inside
mechanism.
Fig. 5 is a side view of one of the locks with side wall removed.
For the purpose of our invention we employ an automatic locking device which
is attached to or fitted within the side recesses A of the window in which the
window frames proper or sashes B containing the glass, slide.
This locking device consists of a catch C preferably with a rounded face and
straight back and having a projection D on its tail E which projection rests on an
articulated lever F; a preferably V shaped spring G is also employed one end of
which rests on a lip H on the catch C aforesaid.
The catch, lever and spring preferably work within a box J mounted on a face
plate K, and having a cap or cover L which may have a hole M in it to take the
tail of the catch for which it acts as a guide, one end of the V spring bearing
against the inside of such cover L.
Through the box a pin N is passed, such pin having a lip O formed on it, this
lip lying underneath the articulated lever F the pin being employed for releasing
the window when locked. The pin N may be turned by means of an arm P
attached to it or by means of a key or other suitable device.
The side of each window frame B proper is provided with any desired number of
recesses Rat suitable distances apart, and for preventing the woodwork wearing, a
metal plate may be fixed to such window frames such plate having recesses in it.
It will be understood that in place of fixing the locking device to the recess in
which the window frame slides and forming the recesses in such window frame the

page_text: locking device may be fitted to the window frame and the recesses formed in the
recesses which take the window frames and the plate fixed therein instead of to
the window frame.
Each window may be provided with one or more of the locking devices
or if desired the lock may be made a double one so as to act on both the top and
bottom parts of the windows at the same time in this case one pin would operate
the two catches as shown in the drawing at Fig. 4.
The action is as follows: As the top or bottom parts of the window are raised
or lowered respectively, the catches of the locking devices slip into the recesses
provided to receive them and so securely lock the window, the rounded part of the
catch being upward in the case of the halves of windows which have to be raised
to be opened and the straight part being upward in the case of the halves of
windows which have to be lowered to be opened, the rounded face only allows of
the closing of the window, the straight part acting as a bar against it being opened
the pin having to be turned to release the catch before the window can be opened,
when this pin is turned by means of its handle or the like to withdraw the catch
from its recess the window may be slid up or down freely and such window can be
set at any suitable height by allowing the catch to come out and engage with the
recess which is opposite to it at that height, the window cannot then be opened
any further from the outside as the flat side of the catch prevents any movement
of the window in the direction in which it would have to move to be opened,
but the rounded side allows of it moving in the direction necessary to close it,
thus in the bottom parts of windows which have to be raised to be opened the
flat side of the catch being downward bears on the bottom part of the recess with
which it engages and so prevents such window being raised until the catch is
withdrawn, and this can only be effected from the inside of the apartment to which
the window is fitted as the pin is on the window frame inside such apartment,
the window can however be closed from the outside as the rounded face of the
catch allows of a downward movement of the window, it will thus be seen that
windows fitted with these improvements can be closed from the outside, but
cannot be opened, by this means effectually preventing the opening of windows
from the outside.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we delare that what
we claim is: -
1. For securing sliding windows to prevent them being opened from the outside,
the employment of a device consisting of a catch C having one face flat and the
other rounded, and having a tail E with a projection D thereon, an articulated
lever for the projection D to rest on, spring G to bear on a lip H on catch C, and
pin N with lip 0, the whole working in a box J with or without loose cover or cap L
mounted on a face plate or not such as K, in the manner and for the purposes,
substantially as shown and described.
2. In combination with recesses formed in window sashes or in the recesses
which take such sashes, the employment of a locking device, substantially as des-
cribed with reference to the accompanying drawings.
Dated this Twentieth day of November 1899.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicants.