Improvements in Multiple Expansion Steam Engines.
Year: 1889

page_text: Date of Application, 3rd Sept., 1889
Complete Specification Left, 30th May, 1890-Accepted, 12th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Multiple Expansion Steam Engines.
We, PETER FERGUSON and WILLIAM YOUNG FLEMING, both of Phoenix Engine
Works, Paisley, Renfrewshire, Engineers and Shipbuilders, do hereby declare the
nature of this Invention to be as follows:-
:-
This Invention relates to multiple expansion steam engines and it consists in
arrangements of cylinders combining with two or more cylinders connected to
the crank shaft in pairs by T shaped triangular or like connecting rods in the manner
described in the Specification of Letters Patent No. 2605 of 1887 of one or more
cylinders directly connected in the usual manner to a crank or cranks on the same
crank shaft.
In three cylinder compound or triple expansion engines for example one cylinder
provided with soparate valve gear is directly connected to a crank on the crank shaft
in line with and balancing a second crank to which the other two cylinders are both
connected through the T shaped form of connecting rod before referred to. In four
cylinder multiple expansion engines two of the cylinders are each connected to
separate cranks and the other two through the T shaped connecting rod to a single
crank on the same crank shaft; whilst in engines having a greater number of
cylinders one two or more cylinders are connected each to a separate crank on
the crank shaft and two or more cylinders are connected in pairs by T shaped
connecting rods to a crank or cranks on the same shaft.
Dated this Thirty-first day of August 1889.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Multiple Expansion Steam Engines.
We, PETER FERGUSON and WILLIAM YOUNG FLEMING, both of Phoenix Engine
Works, Paisley, Renfrewshire, Engineers and Shipbuilders, 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 relates to multiple expansion steam engines and it consists in
arrangements of cylinders combining with two or more cylinders connected to the
crank shaft in pairs by T-shaped, triangular or like connecting rods in the manner
described in the Specification of Letters Patent No. 2605 of 1887, of one or more
cylinders directly connected in the usual manner to a crank or cranks on the same
crank shaft.
In three cylinder compound or triple expansion engines for example one cylinder
provided with separate valve gear is directly connected to a crank on the crank shaft
in line with and balancing a second crank to which the other two cylinders are both
connected through the T-shaped form of connecting rod before referred to. In four
cylinder multiple expansion engines two of the cylinders are each connected to
separate cranks and the other two through the T shaped connecting rod to a single
crank on the same crank shaft; whilst in engines having a greater number of
cylinders one two or more cylinders are connected each to a separate crank on the
crank shaft and two or more cylinders are connected in pairs by T shaped connecting
rods to a crank or cranks on the same shaft.
In the accompanying drawings Figure 1 is an end elevation representing an
arrangement of engines in which two or more cylinders connected in pairs by

page_text: T-shaped, triangular, or like connecting rods are combined with one or more
cylinders connected directly to the cranks in the usual manner.
Figure 2 is a plan of a triple expansion engine in which the cylinder 1 is connected
directly in the usual manner to a crank A, and the cylinders 2 and 3 are connected
by a T-shaped, triangular or like connecting rod to a second crank B.
Figure 3 represents a quadruple expansion engine in which the cylinders 1 and 2
are connected directly to cranks A and B and the cylinders 3 and 4 are connected
by a T shaped, triangular, or like connecting rod to a crank C.
'
Figure 4 represents a quadruple expansion engine with a high pressure cylinder 1,
a first intermediate cylinder 2, a second intermediate cylinler 3 and two low pressure
cylinders 4 and 4. The cylinder 1 is connected directly to a crank A, the
cylinders 2 and 4 being connected by a T shaped triangular or like connecting rod
to a crank B and cylinders 3 and 4' in like manner to a crank C.
Figure 5 represents a triple expansion engine with one high pressure cylinder 1,
one intermediate cylinder 2, and two low pressure cylinders 3 and 3¹, the
cylinders 1 and 2 being connected directly to cranks A and B and the cylinders 3
and 3 being connected by a T shaped, triangular or like connecting rod to a
crank C.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed we declare that what we
claim is :-
1. In multiple expansion steam engines the combination with two or more
cylinders connected in pairs by triangular T-shaped or similar connecting rods of one
or more cylinders connected directly to separato cranks substantially as hereinbefore
described.
2. The several arrangements of multiple expansion steam engines hereinbefore
described with reference to the accompanying drawings.
Dated this Twenty-ninth day of May 1890.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.