Improvements in or connected with Railway Carriage Windows.
Year: 1897

page_text: Date of Application, 21st May, 1897
Complete Specification Left, 21st Feb., 1898-Accepted, 26th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in or connected with Railway Carriage Windows.
I, WILLIAM MCLAREN, of Moorgate Works, Moorfields, in the City of London,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the sliding windows for railway carriage doors and
comprises the improvements hereinafter described.
According to the said invention the grooves in the side pillars of the door are
so formed that the sliding sash will always be close against the outer side of the
grooves except at the instant when it is being put over the fence plate, and the fence
rail across the door on the inside immediately below the fence plate is made of
an inclined or wedge form so that the projecting lap plating at the bottom of the
sliding window, which goes over the fence plate, shall not prevent the sliding
sash from being kept close to the grooves in the door pillars, the lap plating
at the bottom of the sliding sash being placed to project in advance of the face of
the sash the thickness of the fence plate.
On the inside of the door and window I put a hinged garnish rail that
presses constantly against the inside face of the sliding sash to keep
throw it
it close against the outside of the grooves, and helps to
over the fence plate when it is lifted to the proper height. The sash does not
rest upon the hinged garnish rail whereby the difficulty hitherto experienced in
other hinged garnish rails, of either having to pull the garnish rail forward from
under the sliding sash before it can be lowered, or of having to push the hinged
garnish rail underneath the window after the window has been raised for the
window to rest upon will be remedied.
The advantage of this invention is that the sliding sash being always close to
the outer side of the grooves it will keep out the rain, dust and draught to an
extent that the ordinary formation of window with taper or curved grooves in the
door pillars cannot do, and whether the window is entirely closed or partly closed.
I provide a new form of window strap plate or loop to which the window strap
is attached, which enables a shorter strap to be used for the raising and lowering
of the window and thereby removes the difficulty that exists, when the strap is a
little too long, of the end of it being shut in and fastened at the bottom of the
door when the door is closed from the outside which prevents the sliding window
being put down from the inside of the carriage until the door has been opened from
the outside.

page_text: I, WILLIAM MCLAREN, of Moorgate Works, Moorfields, in the City of London,
Manufacturer, 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 the sliding windows for railway carriage doors and
comprises the improvements hereinafter described.
According to the said invention the grooves in the side pillars of the door are
so formed that the sliding sash will always be close against the outer side of the
grooves except at the instant when it is being put over the fence plate, and the fence
rail across the door on the inside immediately below the fence plate is made of
an inclined or wedge form so that the projecting lap plating at the bottom of the
sliding window, which goes over the fence plate, shall not prevent the sliding
sash from being kept close to the grooves in the door pillars, the lap plating
at the bottom of the sliding sash being placed to project in advance of the face of
the sash the thickness of the fence plate.
On the inside of the door and window I put a hinged garnish rail that
presses constantly against the inside face of the sliding sash to keep
it close against the outside of the grooves, and helps to throw it over the fence
plate when it is lifted to the proper height.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is an elevation of the inner side of a railway carriage door provided with
my improvements:
Figure 2 is a section on the line 2-2 Figure 1:
Figure 3 is a view of part of Figure 2 but drawn to a larger scale:
Figure 4 is a section on the line 4-4 Figure 3.
a, a are the usual side pillars of the door and b, b are the grooves formed therein
for receiving the sliding sash c, the wall of each groove nearest to the outside
of the door being straight throughout whilst the upper part of the groove b in which
the window is situated when closed is slightly widened.
e is the fence plate which is carried by the bar f of the door the said plate being
so arranged that it does not project into the grooves in which the sash slides, that
is to say, it is out of the plane of movement of the sash c. g is the lap plating
at the bottom of the sliding sash the said lap plating extending beyond the outer
face of the sash so that when the latter is in contact with the face d of the groove b
the lap plating can engage over the fence plate e as clearly shewn in Figure 3.
The upper part of the groove is widened out in the manner hereinbefore described
in order to permit of imparting the necessary forward and backward movement
to the sash to engage the lap plating with or disengage it from the fence plate.
h
h is the hinged garnish rail the ends i, i of which project into recesses com
municating with the grooves b, so that the garnish rail will cover the full width
of the window, springs j, j being arranged between the door and the ends of the
garnish rail in order to press the same against the sash. The said garnish rail is
fixed in such relation to the sash that at no time does it pass beneath it but always
presses against the face of the sash whereby the difficulty hitherto experienced
with other hinged garnish rails of having either to pull the garnish rail from under
the sliding sash before the latter is lowered or having to push the hinged garnish
rail beneath the sash for the latter to rest upon after it has been raised is obviated.
The hinged garnish rail arranged in this manner serves when closing the window

page_text: to push the sash outwards so that the lap plating will engage over the fence plate
and when opening the window the pull upon the sash to remove the lap plating from
the fence plate will be sufficient to push back the garnish rail against the pressure
of the springs j, j.
It will be understood that a window sash constructed as herein before described
possesses all the advantages of the ordinary sliding sash in so far as freedom of
operation is concerned, whilst at the same time it possesses the advantages of the
sliding sash working with the garnish rail, inasmuch as the sliding sash is always
close to the outer side of the groove so that it will keep out rain, dust and draught
to an extent that the ordinary sash cannot do.
It is well known that the strap of a carriage window is frequently so long that
the end of it is shut in and fastened at the bottom of the door when the latter is
closed which prevents the sliding window from being lowered until the door has
been opened and the strap released. To obviate this difficulty with my improved
window I attach the window strap plate or loop close to the upper edge of the
lower bar of the sash frame instead of in the middle thereof as is usual whereby
I am enabled to use a shorter strap which being suspended from a higher point
than is usual does not reach so far down.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The combination with a railway carriage window sliding in a groove having
a straight wall at one side, of a lap plate projecting beyond the outer face of the
window and engaging with a fence plate out of the plane of movement of the
window sash, substantially as described.
2. The combination with a sliding sash sliding in a groove of a hinged garnish
rail adapted at all times to bear against the back or inner face of the sash, sub-
stantially as described.
3. The combination with a sliding sash having a lap plate projecting beyond
the face of the window so as to engage with a fence plate out of the plane of
movement of the window, of a hinged garnish rail adapted at all times to press
against the back or inner face of the sash, substantially as described.
4. The improvements in railway carriage windows substantially as hereinbefore
described and illustrated in the accompanying drawing.
The 21st dor of February 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.