Improvements in Steam Heating Apparatus for Railway Trains.
Year: 1892

page_text: Date of Application, 22nd Sept., 1892
Complete Specification Left, 16th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by EMILE PICARD, of 11, Rue Royale, Brussels,
Belgium, Engineer.]
Improvements in Steam Heating Apparatus for Railway Trains.
I, HAROLD IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention to be as follows:-
The heating of a railway train has been sometimes effected by conducting steam
from the locomotive boiler along a pipe coupled from carriage to carriage and
communicating with heaters situated in the several compartments. This invention
relates to certain appliances to be used in connection with such heating apparatus
for the purpose of determining a moderate pressure of steam in the train pipe
and for regulating the amount of steam supplied to the various heaters, with
provision for escape of water of condensation, as I shall describe referring to the
accompanying drawings.
Figs. 1 and 2 are vertical sections on planes at right angles to one another of the
steam supply valve under control of the engine driver.
Fig. 3 is a vertical section of a modification in which a stop cock is employed
instead of a valve.
Figs. 4 and 5 are vertical sections on planes at right angles to each other, of the
cock or valve employed for regulating supply of steam to each heater and for
discharge of water of condensation.
Referring first to Figs. 1 and 2, from a flange A bolted on the boiler with
lenticular washer A' to make the joint tight, extends upwards the valve box in
which there is a diaphragm A2 forming a seating for a valve A³ which can be
forced to or drawn from its seat by a screw spindle A turned by a handle or hand
wheel. When the valve A³ is thus opened steam passes into the cavity B whence
a branch B' leads to the train pipe and a branch B² to a pressure gauge. Above
the cavity B is fitted a valve B3 which is kept seated by a spring B' adjusted to
the pressure desired in the train pipe. When that pressure is exceeded the valve B³
is raised from its seat and the noise of the steam escaping by the outlet pipe B
apprises the driver of the excess, who can then regulate the supply by more or less
closing the valve A³.
In the regulating cock shown in Fig. 3, parts corresponding with those in Figs. 1
and 2 are marked by similar letters of reference, a stopcock C being substituted
for the valve arrangement shewn in these figures.
Referring to Figs. 4 and 5 D D are parts of the train pipe which is situated
under the underframing of the carriage.
Between flanges on the pipes D D is clamped the body D' of the cock with
lenticular washers D2 to make tight joints.
In the cock there is fitted a spindle E which can be turned by a handle or hand
wheel worked by a strap or otherwise from the compartment in which is situated
the steam heater. This spindle has a coned collar E₁ pressed against a seating by
a spring E situated in the screw cap E³.
Within the cylindrical chamber of the cock is fitted a rotating slide F against
which bear arms projecting from the spindle E.
By turning the spindle, the slide F can be moved round so as to open more or
less the passage F¹ leading up to the steam heater in the carriage.
When the slide F is in the position shewn in Fig. 4 the steam supply being then

page_text: cut on, the water of condensation can pass from the heater above to a lateral
outlet F2.
Dated this 22nd day of Sentember 1800.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Steam Heating Apparatus for Railway Trains.
I, HAROLD INRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, 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 heating of a railway train has been sometimes effected by conducting steam
from the locomotive boiler along a pipe coupled from carriage to carriage and
communicating with heaters situated in the several compartments.
This invention relates to certain appliances to be used in connection with such
heating apparatus for the purpose of determining a moderate pressure of steam in
the train pipe and for regulating the amount of steam supplied to the various
heaters, with provision for escape of water of condensation, as I shall describe
referring to the drawings accompanying my Provisional Specification.
Figs. 1 and 2 are vertical sections on planes at right angles to one another of the
steam supply valve under control of the engine driver.
Fig. 3 is a vertical section of a modification in which a stop cock is employed
instead of a valve.
Figs. 4 and 5 are vertical sections on planes at right angles to each other, of the
cock or valve employed for regulating supply of steam to each heater and for
discharge of water of condensation.
Referring first to Figs. 1 and 2, from a flange A bolted on the boiler with
lenticular washer A' to make the joint tight, extends upwards the valve box in
which there is a diaphragm A2 forming a seating for a valve A³ which can be
forced to or drawn from its seat by a screw spindle A* turned by a handle or hand
wheel. When the valve A is thus opened, steam passes into the cavity B whence
a branch B' leads to the train pipe and a branch B' to a pressure gauge. Above
the cavity B is fitted a valve B which is kept seated by a spring B' adjusted to the
pressure desired in the train pipe.
When that pressure is exceeded, the valve B³ is raised from its seat and the noise
of the steam escaping by the outlet pipe B' apprises the driver of the excess, who
can then regulate the supply by more or less closing the valve A³.
In the regulating cock shown in Fig. 3, parts corresponding with those in Figs. 1
and 2 are marked by similar letters of reference, a stop cock C being substituted
for the valve arrangement shewn in these figures.
Referring to Figs. 4 and 5 D D are parts of the train pipe which is situated
under the underframing of the carriage.
Between flanges on the pipes D D is clamped the body D¹ of the cock with
lenticular washers D' to make tight joints.
In the cock there is fitted a spindle E which can be turned by a handle or hand
wheel worked by a strap or otherwise from the compartment in which is situated
the steam heater. This spindle has a coned collar E pressed against a seating by
a spring E³ situated in the screw cap E³.
Within the cylindrical chamber of the cock is fitted a rotating slide F against
which bear arms projecting from the spindle E.
By turning the spindle, the slide F can be moved round so as to open more or
less the passage F' leading up to the steam heater in the carriage.
When the slide F is in the position shewn in Fig. 4, the steam supply being then

page_text: cut off, the water of condensation can pass from the heater above to a lateral
outlet F³.
When two or more heaters have to be supplied, the cock is made with two or
more branches.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim, in respect of steam heating apparatus for railway trains, is :—
1. The steam supply valve substantially as described with reference to
Figs. 1 and 2.
2. The steam supply cock substantially as described with reference to Fig. 3.
3. The cock or valve for regulating admission of steam to each heater, substan-
tially as described with reference to Figs. 4 and 5.
Dated this 15th day of June 1893.
ABEL & IMRAY,
Agents for the Applicant.