Improvements in Ventilators for Railway Carriages, Motor and Tram Cars, and similar Vehicles.
Year: 1898

page_text: Date of Application, 8th June, 1898
Complete Specification Left, 4th Mar., 1899-Accepted, 8th June, 1899
Improvements in Ventilators for Railway Carriages, Motor and Tram
Cars, and similar Vehicles.
We, JAMES ARNOTT, of 5, Grimthorpe Terrace, Headingley, Leeds, in the
County of York, Mechanical Engineer, WALTER RAMSDEN and NORTON CARTER,
of the Firm of Cartel, Ramsden & Carter, of 82, Albion Street, Leeds aforesaid.
Solicitors, and CHARLES HENRY WILSON, of 8, South Parade, Leeds aforesaid,
Chartered Accountant, do hereby declare the nature of this invention to be as
follows.
This invention relates to improvements in the means or method of ventilating
railway carriages motor and tram cars and similar vehicles, and its object is to
provide a cheap and efficient means of ventilating this class of vehicle free from
any probability of incommoding the passengers by down or cross diaughts
For this purpose we employ one or more ventilating passages or conduits pre-
ferably outside along the top of the vehicle and we enlarge the ends conically
that is to say we provide bell shaped or trumpet shaped ends to the said passages
which may project more or less beyond the vehicle The ventilating passages
may be of any suitable cross section but we prefer an approximately
"D" shaped section with the flat side downwards as such a form may be cheaply
made and be readily secured to the top of the vehicle
One or more openings is or are made through the 100f of each compartment
into the ventilating passage or passages above and each of these openings may be
fitted with a rim piojecting into sad passage These 11ms may be in the form of a
truncated cone having the base downwards A number of the said openings may
be made in a metal plate or fitting let into or fixed to the roof of the vehicle
and they may have a connecting chamber below then bases
It will be readily understood that whilst the vehicle 18 in motion an alr
current will be created in the ventilating passage or passages which rushing at
1ight angles across the opening communicating with the compartments tends to
draw the air out of the compartments
Suitable means may be provided for closing or regulating the ventilators
Dated this 8th day of June 1898.
COMPLETE SPECIFICATION
Improvements in Ventilators for Railway Carriages, Motor and Tram
Cars, and similar Vehicles.
We, JAMES ARNOTT, of 13, Grimthorpe Terrace, Headingley, Leeds, in the
County of York, Mechanical Engineer, and late of 5, Grimthorpe Terrace afore-
[Price 8d.]
Improvements in Ventilators for Railway Carriages, Motor and Tram
Cars, and similar Vehicles.
We, JAMES ARNOTT, of 13, Grimthorpe Terrace, Headingley, Leeds, in the
County of York, Mechanical Engineer, and late of 5, Grimthorpe Terrace afore-
[Price 8d.]

page_text: said, WALTER RAMSDEN and NORTON CARTER, of 82, Albion Street, Leeds afore-
said, Solicitors, and CHARLES HENRY WILSON, of 8, South Parade, Leeds aforesaid,
Chartered Accountant, do hereby declare the nature of this invention and in what
manner the same 18 to be performed, to be particularly described and ascertained
in and by the following statement
This invention relates to improvements in the means or method of ventilating
railway carriages motor and tram cars and similar closed vehicles, and its object is to
provide a cheap and efficient means of ventilating this class of vehicle free from
any probability of incommoding the passengers by down or cross draughts
5
For this purpose we employ one or more ventilating passages or conduits pre- 1
ferably outside along the top of the vehicle and we enlarge the ends conically
that is to say we provide bell shaped or trumpet shaped ends to the said passages
which may project more or less beyond the vehicle The ventilating passages
may be of any suitable cross section but we prefer an approximately
"D" shaped section with the flat side downwards as such a form can be cheaply
made and readily secured to the top of the vehicle
One or more openings is or are made through the 100f of each compartment
into the ventilating passage or passages above and each of these openings are
fitted with a rim projecting into said passage
These rims are each in the form of a
truncated cone having the base downwards A number of the said openings may
be made in a metal plate or fitting let into or fixed to the roof of the vehicle
and they may have a connecting chamber below the bases
It will be readily understood that whilst the vehicle is in motion an air
current will be created in the ventilating passage or passages which, rushing at
right angles across the opening communicating with the compartments tends to
draw the au out of the compartments
Suitable means may be provided for closing or regulating the ventilators
To fully describe our invention reference is made to the accompanying sheets
of drawings, forming a part of this specification, in which Figure 1, represents a
side view of portions of a railway vehicle fitted with my improvements
Figure 2, is a plan view and Figure 3, 18 an end view of the same
Figure 4, 18 a side view of portions of the ventilating passage on a larger
scale Figure 5, 18 a plan view and Figure 6, 18 an end view of the same
The ventilating passage A may be made of sheet metal secured by its flanges B
to the roof C of the carriage D In the top of each compartment a number of
conical eyelets E are fitted and they project through into the ventilating passage.
When the vehicle 18 in motion the enlarged front end F of the passage gathers
the air and a strong current is produced in the passage which as it passes over
the open tops of the eyelets E tends to draw the air out of the compartments in
communication with them
Instead of carrying the passage A along the 100f it may be carried on one
or both sides above the doors Oi short passages may be provided along the top of
each door as shown in Figures 1 and 3
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 18:-
The combination with a ventilating passage open at the ends of cross openings
projecting therein and communicating with the interior of the vehicle, sub-
stantially as herein ahown and described and illustrated in the accompanying
drawings.
Dated this 3rd day of March 1800
DRACUP & NOWELL,
Patent Agents, Bradford