Improved Draught Preventer for Railway Carriages and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Draught Preventer for Railway Carriages and the like.
We, CHARLES ARCHIBALD PARK, of The Gables, Wolverton, Buckingham-
shire, Engineer, and WILLIAM HENRY SEVILLE CRAVEN, of Heaton Villas,
Cheetham Hill, Manchester, Engineer, do hereby declare the nature of this
invention to be as follows:-
Our said invention relates to improved means for preventing the entrance of
draught into a railway or other carriage through the drop-light or window.
The
In its main features it consists of a frame inserted in rebates surrounding the
light. The frame is kept in position by hinges or jointed connections.
object of the hinges is to allow of a slight turning effect so that the frame may
follow and press closely against the sides top and bottom of the light when in
any position. The pressure of the frame against the light is effected by a spring
or springs attached to the sill of the frame so as to draw or press the frame
against the movable light. The light is raised and lowered by a suitable strap or
handles.
Dated this 24th day of June 1898.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improved Draught Preventer for Railway Carriages and the like.
We, CHARLES ARCHIBALD PARK, of The Gables, Wolverton, Buckingham-
shire, Engineer, and WILLIAM HENRY SEVILLE CRAVEN, of Heaton Villas,
Cheetham Hill, Manchester, Engineer, 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:-
Our said invention relates to improved means for preventing the entrance of
draught into a railway or other carriage through the drop-light or window.
In order that our said invention may be more clearly understood we will describe
the same with reference to the accompanying drawing in all the figures of which
the same letters refer to the same parts.
Fig. 1 is an elevation of a railway carriage window or drop light as seen from
the inside of the compartment.
Fig. 2 is a partial sectional plan through -- of Fig. 1.
Fig. 3 illustrates in section the details of the top portion of the drop light or
window

page_text: Fig. A illustrates in section detail of the lower portion.
The drop light or window a slides up and down in suitable guides by means
of a strap or handles a² a². A strap is preferable as giving a greater range
of movement.
The window is kept in its closed position by a strip a³ taking over a fence a
To lower the window it is raised out of engagement with the fence a and lowered
by means of the finger plate a². It is lifted by the handles or the strap and pushed
over the fence a*.
Inside the carriage we provide a frame fitting in rebates and suspended from
hinges b¹ bl. A steel spring 63 is secured to a plate or angle iron 63 on the sill of
the frame. The ends of the spring bear against the casing in such a manner
as to cause the frame b to bear continually against the drop light a.
The combined effect of the suspension of the frame from the hinges and the
action of the spring is that the frame b turns so as to press closely against the
sides the top and the bottom of the frame of the drop light when the latter is
in any position. Draught is thereby excluded and rattling of the window is
prevented.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
The combination with a carriage drop light of a frame secured by hinges at one
end and continually pressed against the drop light by a spring at the other end
substantially as and for the purpose set forth and shown in the accompanying
drawings.