An Improved Draught-excluding Device for Railway Carriage and. other similar Windows.
Year: 1893

page_text: Date of Application, 7th Sept., 1893
Complete Specification Left, 7th June, 1894-Accepted, 14th July, 1894
PROVISIONAL SPECIFICATION.
An Improved Draught-excluding Device for Railway Carriage and.
other similar Windows.
I, WALTER THOMSON, of Melrose House, Whitley, in the County of
Northumberland, Grocer do hereby declare the nature of this invention to be as.
follows:-
This invention relates to an Improved Draught-excluding Device for Railway
Carriage and other similar Windows.
To effect my purpose I make the grooved side boards or frames in which the
sashes work so that they can be turned or moved slightly on a central or other
pivot to a certain extent.
The pivotting allows the sash to be worked up and down in the side grooves in.
the usual way but when the window is closed the sash and pivotted side-grooved
boards can be moved together on their pivot slightly off the vertical line and thus
all draughts by this special construction can be avoided, the ends of the grooved.
boards and sash frames fitting against weather-proof stops or frames.
Dated this 6th day of September 1893.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent..
An Improved Draught-excluding Device for Railway Oarriage and
other similar Windows.
I, WALTER THOMSON, of Melrose House, Whitley, in the County of
Northumberland, Grocer, 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 an Improved Draught-excluding Device for Railway
Carriage and other similar Windows.
To effect my purpose I make the grooved side boards or frames in which the
sashes work so that they can be turned or moved slightly on a central or other
pivot to a certain extent.
The pivotting allows the sash to be worked up and down in the side grooves in
the usual way but when the window is closed the sash and pivotted side-grooved.
boards can be moved together on their pivot slightly off the vertical line and thus
all draughts by this special construction can be avoided the ends of the grooved
boards and sash frames fitting against weather-proof stops or frames.
I will fully describe my invention with reference to the accompanying drawings
in which
Figures 1 and 2 show sectional elevational views of a top-pivotted device the
window being shown in an open and in a shut position ;
Figure 3 is a section on line ay in Figure 2.
Figure 4 is a sectional elevational view of a centrally-pivotted device with the
window in the shut position and in the following description like marks of reference
designate like parts.

page_text: Referring to Figures 1, 2, and 3 of the drawings it will be seen that the window
sash a is fitted into and works or slides in and out of grooved side-frames a' of the
section shown in Figure 3. Such side-frames may conveniently be made in brass.
In Figs. 1 and 2, these frames are shown top-pivotted at P so that the frames are
hung from these pivots and their lower ends are allowed sufficient segmental travel
to enable the sash in the groove of the frame either to come opposite the opening
down which it is intended to slide when lowering the window or to rest on the
weather-proof stop W (as shown in Figure 2) when the window is shut.
The edges of the frames a¹ may be enclosed by brass or other cover-casings c¹
as shown in the figures.
The rebates in which the frames a¹ work must of course be formed to permit of
the necessary motion of these frames when adjusting them for the purpose of
opening or closing the window.
.
In Figure 4 the frames a' are shown centrally pivotted as at P, and the
sides E E E E' of the frames may if desired be bevelled off to suit the motions
of the frames to the shape of the casings in which they work.
In other respects
the principle and working of the device shown in Figure 4 resembles Figures 1 to 3
already described.
In Figure 4 however a small flange-piece or draught-excluding device F may be
secured to the frames a¹ as shown so as to extend the width of the window between
the frames and so tend to prevent draught inlets when the window is shut.
In the figures the letters O and I represent respectively "outside" and "inside
of window.
"
A window strap may be attached to the sash for adjusting its position in the
ordinary way. Perfect facility of working combined with freedom from window
draughts may thus be obtained.
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
I claim is.
1. The improved draught-excluding device for railway carriage and other similar
windows consisting in the combination with the window sash of grooved side-frames
which may be top-pivotted or centrally pivotted, and adapted to move in casings
laterally with the sash when adjusting it to open or close the window substantially
as herein set forth.
2. The improved draught-excluding device for railway carriage and other similar
windows consisting in the arrangement or combination of parts substantially as
described and illustrated in Figures 1, 2, 3, and 4 of the drawings hereto annexed.
Dated this 6th day of June 1894.
A. CRA WHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.