Improvements relating to Window Sashes.
Year: 1899

page_text: Improvements relating to Window Sashes.
1, JOHN JAMES HARLEY, of 27, Old Haymarket, Liverpool, in the County of
Lancaster, Ironmonger, do hereby declare the nature of this invention to be as
follows:-
My present invention has reference to window sashes of the ordinary sliding
type, and the objects are to so modify them that the window cannot be opened
beyond a certain fixed amount, and that it will probably be impossible for a
person, not acquainted with the construction, to remove the sash from its frame
even after removing the side beadings which usually hold the sash in place.
At one or both sides of the frame in which the sash slides, I firmly fix a stop
of brass or other suitable material which is quite concealed from view as it is
in that part of the frame which is covered by the sash and it projects into the
thickness of the latter.
At the corresponding positions in the edges of the sash, I cut a recess and in
this I firmly fix a brass or other metal piece which has or forms a slot of suffi-
cient cross-section to clear the stop and of such a length as to permit the sash to
slide a sufficient amount to give the desired opening.
In order that the sash may be put into or removed from its frame, the slots
are at one end carried laterally through to the face of the sash, the opening so
made being concealed by the beading when the latter is in place. These lateral
recesses are preferably so located that the sash can only be drawn away clear of
the stops when fully closed.
It will be seen that when the beadings are in place, the stops and their slots
are completely concealed and inaccessible, that the window cannot be opened
further than the length of the slots will permit, and that, even after the beading
has been removed, the sash cannot be withdrawn except when slid into a definite
position where the lateral recesses are opposite to the stops.
The improvements described may be fitted to either lower or upper sashes or
both, and they are especially useful in buildings where persons are kept in
restraint, as the latter have been known to make their escape by the windows
even when fitted with stops. these being generally accessible and removable.
On account of the special knowledge necessary to remove the sash from its
frame, my invention also obviously affords some protection against burglary.
Dated this 23rd day of November 1899.
SLOAN & LLOYD BARNES,
Chartered Patent Agents, 34, Castle Street, Liverpool,

page_text: I, JOHN JAMES HARLEY, of 27, Old Haymarket, Liverpool, in the County of
Lancaster, Ironmonger, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
My present invention has reference to window sashes of the ordinary sliding
type, and the objects are to so modify them, that the window cannot be opened
beyond a certain fixed amount, and that it will probably be impossible for a
person, not acquainted with the construction, to remove the sash from its frame
even after removing the side beadings which usually hold the sash in place.
I have illustrated my invention in the accompanying drawings, in which
Fig. I is a perspective view of the face of the window frame with the brass stop
piece in position; Fig. II is a perspective view of the sash with its stop piece
in position, in this view the sash is supposed to be turned round so that the
observer looks at the face of the sash which abuts against the window frame
shown in Fig. I. Fig. III is a front elevation of the window frame with its
stop piece shown in full lines. the outline of the sash itself and its stop piece
being indicated by the dotted lines; Fig. IV is a section on the line A A of
Fig. III. and Fig. V is a view similar to Fig III but shows how the sash
has to be inclined, when the beading is removed, in order that it may be
withdrawn.
i
1 is the window frame, 2 the sash which slides in the groove formed by the
beadings 3 and 4, the latter of which has to be removed before the sash can be
withdrawn, 5, 51 is the stop piece fitted to the window frame and 6. 6 the corre-
sponding piece fitted to the sash. The shape of these pieces will be clearly under-
stood from an inspection of Figs I, II and IV. and it will be seen. that they are
similar in shape but that the one on the sash is inverted; the body 5 of the
stop in the window frame is let into the frame. but the projecting "L" piece 5¹
stands out from the face of the frame; in the case of the sash both the body part 6
and the "L" shaped projecting piece 61 which forms the slot are let in flush
with the face of the sash, and the sash is further cut away as shown in Fig II
to permit its withdrawal when in its top position
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It will be seen that when the window is lowered from its top position. the
part 5 on the frame enters the slot formed by the part 61, and that in such posi-
tion the sash cannot be withdrawn even if the beading 4 be removed, and also
that the amount of opening is limited when the parts 5 and 6 engage as shown
in Fig III.
I have found the form of stop pieces illustrated to be convenient and effective,
but it is clear that they may be modified considerably without departing from
the scope of my invention;-For instance, the piece 5, 51 may be replaced by a
projecting stud or the like on the frame. and a simple slot may be cut either in
the sash or in a metal piece adapted to be secured to the sash.
It will be seen that when the beadings are in place, the stops and their slots
are completely concealed and inaccessible, that the window cannot be opened
further than the length of the slots will permit, and that, even after the beading
has been removed, the sash cannot be withdrawn except when slid into a definite
position where the lateral recesses are opposite to the stops.
The improvements described may be fitted to either lower or upper sashes or
both, and they are especially useful in buildings where persons are kept in

page_text: restraint, as the latter have been known to make their escape by the windows
even when fitted with stops. these being generally accessible and removable.
On account of the special knowledge necessary to remove the sash from its
frame. my invention also obviously affords some protection against burglary.
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
1 claim is: -
1. The improvement in window sashes, which consists in providing the frame
with a projection and the sash with a corresponding slot. each located out of
sight between the sash and the frame, and so arranged that when the window
opened the projection engages with the slot and prevents the withdrawal of
the sash, and limits the amount of its opening; substantially as described and
illustrated.
2. The improvement in window sashes, which consists in attaching a metal
projecting piece to the frame, and a second metal piece to the sash so as to
form a slot therein, said metal pieces being so located as to be hidden by the
sash when the latter is in position, and to be conjointly adapted. when the window
is open. to prevent the withdrawal of the sash and to limit the amount of its
opening; substantially as described and illustrated.
3. The improvement in window sashes; substantially as described and illus-
trated in the drawings
Dated this 23rd day of August 1900.
SLOAN & LLOYD BARNES,
Chartered Patent Agents, 34, Castle Street, Liverpool,