Improvements in Ventilating Apparatus for Railway and other Carriages.
Year: 1889

page_text: Date of Application, 11th Feb., 1889
Complete Specification Left 11th Nov. 1889-Accented 14th Dec.. 1889
PROVISIONAL SPECIFICATION.
Improvements in Ventilating Apparatus for Railway and other
Carriages.
I WILLIAM EDWIN HEATH of 3 Canonbury Square, Islington Major (retired) do
hereby declare the nature of this invention to be as follows:-
For Railway Carriages I fix on the roof or other suitable place n long box preferably
of Metal and open at both ends the bottom having an opening to the interior of the
Carriage through the roof. In this chamber I place another box shorter and of the
form of a truncated cone the base being the size of the end of the outer chamber and
fixed to it forming an interior conical chamber open at both ends the sinall end
reaching nearly through the outer chamber. The large end is turned in the direction
the train is travelling the small end of the cone being in rear of the opening in the
roof the current of air (caused by the speed of the train) passing through the cone
induces the air in the carriage to follow it. The case may be of any other form
or mounted to revolve, the apparatus being substantially the same in any case.
1L W 1000
COMPLETE SPECIFICATION.
Improvements in Ventilating Apparatus for Railway and other
Carriages.
I WILLIAM EDWIN HEATH of 3 Canonbury Square Islington Major (retired 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:-
The object of this invention is to utilise the current of air produced by the motion
or speed of the train carriage or other vehicle when moving and independently of
ordinary wind by conducting the passing air through a tube and so arranging this
tube inside another tube that the foul air shall be drawn from the interior of the
carriage without causing any draught to be felt by the occupants.
I fix on the roof-side or other suitable place an elongated shell or box without
ends, one of the sides or bottom having an opening about midway communicating
with the interior of the carriage.
Inside this shell or box I place another shorter box of a taper form similar to a
Truncated Cone the larger end being the size of the end of the outer case and fixed
to it.
This inner box passes about three fourths through the outer box beyond the opening
leading to the interior of the Carriage opposite the small end of the cone I hang
a light balanced valve which closes when the carriage is at rest and excludes
draught.
The accompanying drawing shews the outer case marked A the inner conical
case B the opening in the side is shewn at C, the valve at D the arrows shew the
direction of the currents of air although the drawing shews rectangular form the
apparatus may be of round or oval section.

page_text: Having now described the nature of my invention and the manner in which it is to
be applied claim
A method of ventilating by the current of air set up by the passing of the carriage
through still air and more particularly in the drawing accompanying this description
for Railway Carriages.