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

page_text: Date of Application, 9th June, 1892
Complete Specification Left, 10th Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improved Method of Utilizing Steam for Motive Power and Heating
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 a new or improved method, and
arrangement and combination of appliances for utilizing and economising steam for
motive power and heating purposes.
The improvements consist under one arrangement in taking the exhaust steam
from a single, compound or multiple expansion engine or engines by a main pipe or
pipes and leading same by a branch connection to an ejector or other condenser ;
while another branch connection would be taken to a separate low pressure boiler
working under a back pressure or to a reservoir. Valves would be fitted on these
pipe connections so that the steam supply may be shut off to the condenser, or to
the reservoir as may be desired. By this means the steam in the separate boiler or
reservoir can be utilized for heating purposes. A branch connection fitted with a
valve would or may also be made leading to the atmosphere, so that the exhaust
steam may be discharged therefrom when so desired. Or instead of separate
valves, a two, three, or multiple ported valve may pass and regulate the steam to
the condenser, reservoir, or atmosphere. And a check valve would or may be fitted
on the main exhaust steam pipe to prevent the return of the steam back to the
engine.
A pipe connection fitted with a valve would or may also be made with the branch
pipe leading to the separate low pressure boiler or reservoir, so as to conduct the
exhaust steam or part of same to heat a feed water heater or heaters, or this branch
connection may be made from the reservoir to the feed water heater.
In applying my improvements to two cylinder coupled engines which would work
either as compound expansion or as separate single expansion engines I take an
exhaust pipe connection, fitted with a stop valve, from the one cylinder to the
other, so that the steam may pass from the high to the low pressure cylinder. But
when to be used as separate engines both working with live or high pressure steam,
I lead said steam by branch connections fitted with valves, to the steam casings of
both cylinders, and thus the high pressure steam would be supplied to either or
both cylinders by opening or closing the valves on these branches. The exhaust
steam would be led from one or both of these cylinders by branch connections
fitted with valves, to a condenser and reservoir or reservoirs to be utilized in the
same or an analogous manner to that described in the first arrangement.
Dated the 8th June 1892.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improved Method of Utilizing Steam for Motive Power and Heating
Purposes, and Appliances connected therewith.
I, JAMES MURRIE, of 9 Granville Street, West, Glasgow, Lanarkshire Engineer,
do bereby 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:-
My invention has reference to and comprises a new or improved method and

page_text: arrangement and combination of appliances for utilizing and economising steam for
motive power and heating purposes.
The improvements consist under one arrangement in taking the exhaust steam
from a single, compound or multiple expansion engine or engines by a main pipe or
pipes and leading same by a branch connection to an ejector or other condenser,
while another branch connection would be taken to a separate low pressure boiler
working under a back pressure or to a reservoir. Valves would be fitted on these
pipe connections so that the steam supply may be shut off to the condenser, or to
the reservoir as may be desired. By this means the steam in the separate boiler or
reservoir can be utilized for heating purposes. A branch connection fitted with a
valve would or may also be made leading to the atmosphere so that the exhaust
steam may be discharged therefrom when so desired. Or instead of separate valves,
a two, three, or multiple ported valve may pass and regulate the steam to the
condenser, reservoir or atmosphere; and a check valve would or may be fitted on
the main exhaust steam pipe to prevent the return of the steam back to the
engine.
A pipe connection fitted with a valve would or may also be made with the branch
pipe leading to the separate low pressure boiler or reservoir so as to conduct the
exhaust steam or part of same to heat a feed water heater or heaters, or this branch
connection may be made from the reservoir to the feed water heater.
In applying my improvements to two cylinder coupled engines which would work
either as compound expansion or as separate single expansion engines I take an
exhaust pipe connection fitted with a stop valve, from the one cylinder to the other,
so that the steam may pass from the high to the low pressure cylinder. But when
to be used as separate engines both working with live or high pressure steam, I
lead said steam by branch connections fitted with valves, to the steam casings of
both cylinders, and thus the high pressure steam would be supplied to either or
both cylinders by opening or closing the valves on these branches. The exhaust
steam would be led from one or both of these cylinders by branch connections
fitted with valves, to a condenser and reservoir or reservoirs to be utilized in the
same or an analogous manner to that described in the first arrangement.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended two explanatory sheets of drawings which I will
now proceed to describe."
Figure 1 is a diagrammatic view of one arrangement of my improvements.
Figure 2 is a similar view of a different arrangement.
A is the pipe conveying the live steam from the boiler to the engine; while B is
the connection from the cylinder C to the condenser D; and E the connection to
the receiver G. Valves H and I are fitted to these pipe connections B and E, thus
allowing the steam supply to be shut off to the condenser D or receiver G as may
be found necessary.
I may also have a branch pipe J fitted with a valve K
leading from the pipe connection E to the atmosphere, so that the exhaust steam
may be discharged therefrom when desired. I may also provide the main exhaust
steam pipe E with a check valve L to prevent the steam returning back to the
engine.
I may also have a pipe connection M with a valve N leading from the exhaust
steam pipe E, so as to allow the exhaust steam or part of it to heat a feed water
heater O; or in place of leading this pipe M from the main steam exhaust pipe E
as described, it may be led from the receiver G.
Referring to Figure 2:―
In applying my improvements to separate expansion engines working at high or
low pressure I take the exhaust pipe connection E with stop valve P from the
cylinder C to the other cylinder C, so that the exhaust steam may pass from the
high to the low pressure cylinder, and the exhaust from the low pressure cylinder
may be carried away to the receiver or condenser as already described with
reference to Figure 1. When both are to be used with live or high pressure steam
I lead the live steam pipe A to the steam casings of both cylinders so that by the

page_text: opening of the valves Q, Q¹ fitted to this pipe A high pressure steam would be
supplied to both cylinders, and by the closing of one of the valves high pressure
steam would be shut off from one of the cylinders. The exhaust steam from both
cylinders would be led off by connections as already described with reference to
Figure 1.
It is to be understood that although I have only shewn the exhaust steam
working a second engine there may be a series of engines all working separately
and independently at different pressures and the exhaust from these engines may
also be used for driving other engines or be sent into heaters and utilized for other
purposes.
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 :-
1. The general arrangement and combination of the parts for taking away the
exhaust steam from a single, compound, or multiple expansion engine or engines to
be utilized for other purposes substantially as described and shown on the accom-
panying drawings.
2. The utilization of the exhaust steam from a high pressure single, compound,
or multiple expansion engine to drive a separate and independent engine or engines
at a lower pressure and the exhaust from said engine or engines being utilized to
drive, in a similar manner, another engine or engines at a still lower pressure, or to
be used for heating or other purposes, substantially as described and illustrated on
the accompanying drawings.
3. The utilization of the exhaust steam from steam engines under back pressure
to heat the feed water for steam boilers, substantially as described and shewn on
the accompanying drawings.
Dated this 8th day of Anril 1893
JAMES MURRIE,
Applicant.