Improved Methods of Utilizing Steam for Motive Power, Heating, and other Purposes, and Appliances connected therewith.
Year: 1892

page_text: Date of Application, 3rd Aug., 1892
Complete Specification Left, 5th June, 1893-Accepted, 3rd Aug., 1893
PROVISIONAL SPECIFICATION.
Improved Methods of Utilizing Steam for Motive Power, Heating,
and other Purposes, and Appliances connected therewith.
I, JAMES MURRIE, of 9 Granville Street, West, Glasgow, Lanarkshire, Engineer,
do hereby declare the nature of my invention to be as follows:-
-
This invention has reference to and comprises new or improved methods of and
arrangements and combinations of mechanical appliances for the use and application
of steam in steam engines, for motive power purposes, and also for heating, boiling
or other purposes, and which improvements will save much heat and fuel and at
same time separate the oils from the steam passed through the engines.
These improvements as applied to a compound high and low pressure cylinder
engine or engines consist in connecting the exhaust steam pipe from the high
pressure cylinder or cylinders with a low pressure reservoir steam boiler to be used
for heating or other boiling purposes which boiler may be heated up when desired,
in addition to connecting the exhaust steam pipe from each high pressure cylinder
as heretofore to the casing of the low pressure cylinder, and in fitting on each of
these pipes a stop valve, and in leading a separate pipe direct from the low pressure
reservoir boiler to the inlet pipe or casing of the low pressure cylinder or cylinders,
with a stop valve also on each. This euables the steam after doing its work in
the high pressure cylinder to be used and utilized by pipes led from the low pressure
reservoir boiler for heating, boiling, and other purposes while also working the low
pressure cylinder either conjointly or separately accordingly as the said stop valves
are manipulated, or shut off or open in the said improved arrangement of pipes for
this purpose, instead of as heretofore using the steam from the high pressure boiler
or boilers for low pressure heating or boiling purposes. Where two or more high
pressure boilers were used for supplying the steam to said engine or engines one
of these might be disconnected and used as the low pressure boiler for heating and
other purposes.
For applying these improvements to compound engines with low pressure steam
receivers between the high and low pressure cylinders, the receiver would be used
instead of the low pressure boiler in the former arrangement and the pipes taken
from it for using the steam for heating and boiling purposes, and stop valves would
be fitted on the pipes leading to and from the receiver, and a loaded valve chest
would be fitted on the receiver with a pipe fitted with stop valve leading the steam
to the inlet valve of the low pressure cylinder while an additional by-pass pipe with
a reducing valve would preferably be fitted between the initial high pressure boiler
and the low pressure receiver or reservoir boiler of the former arrangement. In
the arrangement of these improvements where a steam receiver or water heater is
used instead of the low pressure boiler, this is utilized for drawing or trapping off
the oil which is blown over with the exhaust steam from the high pressure engine
by leading this steam into a horizontal rose pipe in the receiver with perforations on
its upper side and immersed in the water of the condensed steam in the lower part
of the receiver and the oil floating on the top and the superfluous accumulated water
would be drawn off by a pipe at a level somewhat above the rose pipe into any
ordinary trap box for the purpose after which the oil would be separated from
the water.
In applying the improvements to two separate coupled condensing engines worked
with steam from two or more high pressure boilers, one of the engines would be
cut off from the condenser by a stop valve on its exhaust pipe and worked as a high
pressure cylinder engine, and have the exhaust steam from it as in the former

page_text: arrangement led by a pipe fitted with a stop valve to a low pressure reservoir boiler
which might be one of the set of high pressure boilers cut off for that purpose or
connected by a reducing pressure valve and thus enable the exhaust steam from the
one engine when thus worked high pressure to be utilized for boiling and heating
purposes. And when applying these improvements to two separate or coupled low
pressure engines worked from two separate low pressure boilers, the boilers would
be isolated and one of them worked high pressure, and one of the engines connected
to it to be worked high pressure by fitting a stop valve on its exhaust pipe to the
condenser, and having an exhaust pipe with a stop valve on it led to the low pressure
boiler, which supplies the initial steam to the other low pressure engine. Thus the
steam from this low pressure boiler, after having done its work in the high pressure
engine, would by these improvements be enabled to be used for heating and boiling
purposes.
Dated the 2nd Avent 1800
W. R. M. THOMSON & Co., .
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improved Methods of Utilizing Steam for Motive Power, Heating,
and other Purposes, and Appliances connected therewith.
1, JAMES MURRIE of 9 Grauville Street West Glasgow Lanarkshire 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 :-
This invention has reference to and comprises new or improved methods of
and arrangements and combinations of mechanical appliances for the use and
application of steam in steam engines for motive power purposes and also for
heating boiling or other purposes and which improvements, will save much beat and
fuel and at same time separate the oils from the steam passed through the
engines.
These improvements as applied to a compound high and low pressure cylinder
engine or engines consist in connecting the exhaust steam pipe from the high
pressure cylinder or cylinders with a low pressure reservoir, steam boiler, to be
used for heating or other boiling purposes which boiler may be heated up when
desired in addition to connecting the exhaust steam pipe from each high pressure
cylinder as heretofore, to the casing of the low pressure cylinder, and in fitting on
each of these pipes a stop valve, and in leading a separate pipe direct from the low
pressure reservoir boiler to the inlet pipe or casing of the low pressure cylinder, or
cylinders with a stop valve also on each. This enables the steam after doing its
work in the high pressure cylinder to be used and utilized by pipes led from the
low pressure reservoir boiler for heating, boiling and other purposes, while also
working the low pressure cylinder either conjointly or separately accordingly as the
said stop valves are manipulated, or shut off, or open in the said improved
arrangement of pipes, for this purpose, instead of as heretofore using the steani
from the high pressure boiler or boilers for low pressure heating or boiling purposes.
Where two or more high pressure boilers were used for supplying the steam to said
engine or engines one of these might be disconnected and used as the low pressure
boiler for heating and other purposes.
For applying these improvements to compound engines with low pressure steam
receivers between the high and low pressure cylinders, the receiver would be used
instead of the low pressure boiler in the former arrangement and the pipes taken
from it for using the steam for heating and boiling purposes and stop valves would
be fitted on the pipes leading to and from the receiver, and a loaded valve chest
would be fitted on the receiver with a pipe fitted with stop valve leading the steam
to the inlet valve of the low pressure cylinder while an additional by-pass pipe with

page_text: a reducing valve would preferably be fitted between the initial high pressure boiler
and the low pressure receiver, or reservoir boiler of the former arrangement.
In the arrangement of these improvements where a steam receiver or water
heater is used instead of the low pressure boiler this is utilized for drawing or
trapping off the oil which is blown over with the exhaust steam from the high
pressure engine by leading this steam into a horizontal rose pipe in the receiver
with perforations on its upper side and immersed in the water of the condensed
steam in the lower part of the receiver and the oil floating on the top and the
superfluous accumulated water would be drawn off by a pipe at a level somewhat
above the rose pipe into any ordinary trap box for the purpose, after which the
oil would be separated from the water.
In applying the improvements to two separate coupled condensing engines
worked with steam from two or more high pressure boilers, one of the engines
would be cut off from the condenser by a stop valve on its exhaust pipe and
worked as a high pressure cylinder engine, and have the exhaust steam from it as
in the former arrangement led by a pipe fitted with a stop valve to a low pressure
reservoir boiler which might be one of the set of high pressure boilers cut off for
that purpose or connected by a reducing pressure valve and thus enable the
exhaust steam from the one engine when thus worked high pressure to be utilized
for boiling and heating purposes. And when applying these improvements to two
separate or coupled low pressure engines worked from two separate low pressure
boilers, the boilers would be isolated and one of them worked high pressure,
and one of the engines connected to it to be worked high pressure by fitting a stop
valve on its exhaust pipe to the condenser and having an exhaust pipe with a stop
valve on it led to the low pressure boiler, which supplies the initial steam to the
other low pressure engine. Thus the steam from this low pressure boiler, after
having done its work in the high pressure engine, would by these improvements be
enabled to be used for heating and boiling purposes.
In order that my said invention be fully understood I shall refer to the several
figures in the annexed sheet of drawings, the same references indicating correspond-
ing parts in all figures.
Fig. 1. illustrates an ordinary compound coupled condensing engine arranged to
work in the following different ways.
•
First. In this arrangement the steam generated in the high pressure boiler A
is made to drive the high pressure engine and exhausts into a receiver or low
pressure boiler B by means of an extension on the exhaust pipe E and a valve E 3
on said extension to shut off the exhaust in the direction of receiver B when the
engine is wrought in the usual manner. The extension on pipe E is conveyed from
valve E3 by means of pipe E 2 to stool & chest E 4 on top of boiler or receiver B.
The receiver B is provided with outlet valve F to permit steam being drawn off for
boiling and other heating purposes. An automatic escape valve G on top of boiler
serves to permit the surplus steam escaping and this steam serves to drive the low
pressure engine D. Said steam is conveyed from the receiver B by means of
pipe G to the original high pressure exhaust pipe E. Valves El and G11
guiding the steam in the desired direction. The exhaust steam from low pressure
cylinder D is condensed in condenser F in the usual manner.
Second. In this arrangement the low pressure engine is made to work as a high
pressure engine and its exhaust is led to a receiver or low pressure boiler. In
carrying this out, the high pressure feed pipe H is continued to H, provided with
a valve H, at the cylinder end, the condenser exhaust pipe is provided with a
branch pipe K fitted with a stop valve K₁ and the junction with coudenser F is
likewise provided with a stop valve K₂. The exhaust after passing through
valve K, is either joined on to pipe G 1 or pipe El and conveyed to receiver or
boiler B. When the exhaust steam is led into an independent receiver at the same
or different pressure than that in receiver B, separate pipes convey the steam to
said independent receiver.
Fig. 2. illustrates an arrangement whereby the steam after driving a coupled

page_text: compound engine can when desired be conveyed to a receiver or low pressure
boiler at a pressure greater than atmospheric pressure, from which boiler or
receiver, the steam is drawn off for heating or boiling purposes.
The same
references as Fig. 1 apply. The condenser exhaust pipe L is provided with a stop
valve K2, branch K and pipe K, to receiver B.
In any of the aforesaid arrangements or those hereinafter described the high
pressure boiler or boilers may be connected with the low pressure boilers or
receivers, said connection M being provided with stop or reducing valves M.
Also, it is not necessary having a receiver or boiler, a series of pipes serving as
the receiver when such is an advantage.
Fig. 3. illustrates an ordinary single cylinder coupled engine arranged to work
when desired at different exhaust pressures. One cylinder C exhausting into a
receiver or low pressure boiler B and the other D into a condenser.
The same
references as in Figs. 1 and 2 are used in shewing how this arrangement is carried
out. The exhaust pipe leading to the condenser is divided by means of valve E 5,
one cylinder exhausting its steam under a pressure greater than atmospheric
pressure into the receiver B and the other cylinder exhausting into condenser F
through the opposite half of exhaust pipe. When there are independent con-
densers for each cylinder, one engine only has its exhaust pipe altered in a similar
manner to that described.
Fig. 4. illustrates arrangements whereby the exhaust from a coupled single
cylinder engine can be diverted either to the condenser, to the atmosphere or to a
pressure receiver. O shews the connection leading to the atmosphere, K, K, and
K, to the receiver or low pressure boiler.
Fig. 5. illustrates a double valve for diverting the steam in either direction by
one motion of a hand wheel. C, represents the cylinder, P, the exhaust to valve
Q the valve, L, the exhaust from valve to condenser or receiver, R, the exhaust to
receiver, S. a trap door, T the hand wheel for actuating valve with double face.
Fig. 6. illustrates the arrangement for freeing exhaust steam from oil and
impurities. C, the cylinder, V the exhaust, A the receiver, W the dip pipe X the
perforated pipe.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1st. In a compound or multiple expansion coupled engine the arrangements illus-
trated under Fig. 1 whereby the exhaust from the high pressure engine is conveyed
to a low pressure. boiler or receiver at a pressure greater than the atmospheric
pressure, and is partly utilized for heating and boiling purposes, the surplus being
utilized by means of an automatic valve to drive the low pressure engine
substantially as hereinbefore described.
2nd. In a compound coupled engine the arrangement illustrated in Fig. 1 whereby
the low pressure cylinder is wrought as a high pressure cylinder and the exhaust
conveyed to a low pressure boiler or receiver under a greater than atmospheric
pressure.
3rd. The arrangements described and illustrated under Fig. 1 whereby a coupled
compound engine can be wrought as an ordinary condensing engine, or as described
under claims one and two, without altering the engine.
4th. In a compound coupled engine the utilization of the exhaust from the low
pressure cylinder by leading it to a receiver at a pressure greater than atmospheric
pressure, substantially as hereinbefore described, and illustrated under Fig. 2.
5th. The arrangement of valves on the exhaust pipe of a compound coupled
engine illustrated under Fig. 2, and hereinbefore described.
6th. The mode and arrangement of apparatus for working a single cylinder
coupled engine as a condensing engine wholly or one cylinder exhausting into a
receiver under pressure and the other into a condenser substantially as hereinbefore
described and illustrated under Fig. 3.

page_text: 7th. In a single cylinder coupled engine the combination of valves on the exhaust
illustrated and described under Fig. 4.
Sth. The two faced valve described and illustrated under Fig. 5.
9th. The mode and arrangement of apparatus for freeing exhaust steam from oil
described and illustrated under Fig. 6.
JAMES MURRIE.