IMPROVEMENTS IN STEAM ENGINES AND IN BLOWING ENGINES
Year: 1868

page_text: LETTERS PATENT to William Inglis, of Manchester, in the County of
Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN STEAM
ENGINES AND IN BLOWING ENGINES."
Sealed the 22nd May 1869, and dated the 23rd November 1868.
PROVISIONAL SPECIFICATION left by the said William Inglis at the
Office of the Commissioners of Patents, with his Petition, on the
23rd November 1868.
I, WILLIAM INGLIS, of Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of the said Invention for "IM-
PROVEMENTS IN STEAM ENGINES AND IN BLOWING ENGINES," to be as follows, that
is to say :-
This Invention comprises various improvements in the details of steam
engines and in arranging or combining the parts thereof, whilst an
improved blowing engine is formed by combining an air cylinder with
some of the arrangements.

page_text: The first part of the Invention relates to the adaptation of separate
cylindrical slide valves for steam and exhaust to the compound or
high and low pressure system of steam engines.
In one modification of the improved arrangements the small high-
pressure cylinder and large low-pressure cylinder are placed side by side,
with their pistons connected to cranks which are diametrically opposite
or nearly so. There are six of the cylindrical valve chambers with their
valves, which are placed with their axes parallel to each other and at
right angles to the crank shaft, two being between the cylinders to
control the passage of the steam from the small one to the large one,
whilst other two for admitting steam are on the outside of the small
cylinder, the remaining two for the exhaust being on the outside of the
large cylinder. All six valves may be worked in any convenient way,
as for example, by a single vibrating disc; or the four in connection
with either of the cylinders may be worked from a disc, whilst the
other two valves may be worked by a separate disc or rocking shaft.
In either arrangement adjustable liberating gear, such as is used in
single engines of the same class, may be applied to the high-pressure
valves for effecting the "cut-off."
In a second modification only four valves are used for the two
cylinders, those between the cylinders being arranged to both admit
steam to the small cylinder and transfer it to the large one, by making
each valve hollow so as when in one position to cover and put in
communication the ports of both cylinders.
In adopting any of the herein-before described arrangements in a
blowing engine the air cylinder may be placed either so as to be worked
directly by a piston rod from the small cylinder or so as to be worked by
one from the large cylinder.
The second part of the Invention relates to improved appliances for
closing the steam valves of the engines herein-before described, or for
closing any steam valves having the "cut-off" effected or controlled by
means of liberating gear.
In one modification of such appliances, where a plunger is arranged to
work through a stuffing box into a cylinder or chamber which is in
communication with the condenser, so that the atmospheric pressure
constantly tends to force the plunger inwards, the chamber is filled or
partly filled with oil or other suitable liquid, and the bottom of the
plunger is made conical to fit a conical seat formed for it in the inner

page_text: end of the chamber. The plunger is connected to the valve gear so as to
be drawn outwards when the valve is opened, and on the gear being
released moves the valve back, its own momentum being gradually
checked close to the end of its traverse inwards by its having to displace
the oil out of its seat. Instead of the plunger or its equivalent being
moved inwards by atmospheric or other fluid pressure the necessary
pressure for that action may be applied by a metallic or other spring,
the oil or other liquid being in all cases retained to prevent violent
concussion at the end of the inward movement.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Inglis in the Great Seal Patent Office on
the 22nd May 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
INGLIS, of Manchester, in the County of Lancaster, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of November, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Inglis, Her special licence that I,
the said William Inglis, my executors, administrators, and assigns, or
such others as I, the said William Inglis, my executors, administrators;.
and assigns, should at any time agree with, and no others, from time to.
time and at all times thereafter during the term therein expressed,.
should and lawfully might make, use, exercise,, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN STEAM ENGINES AND IN.
BLOWING ENGINES," upon the condition (amongst others) that I, the said.
William Inglis, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,.
and in what manner the same was to be performed, and cause the
same to be filed in the Great Scal Patent Office within six. calendar
months next and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William Inglis, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement in writing, reference being had to the accom-
panying Drawings, that is to say :-
My said Invention comprises various improvements in the details of
steam engines, and in arranging or combining the parts thereof, whilst
an improved blowing engine is formed by combining an air cylinder
with some of the arrangements.
And in order that my said Invention and the manner of performing
the same may be properly understood, I have hereunto appended two
Sheets of explanatory Drawings, to be herein-after referred to, and
representing examples embodying my improvements in a convenient
manner.
The first part of my Invention relates to the adaptation of separate
cylindrical slide valves for steam and exhaust to the compound or
high and low pressure system of steam engines.
One modification of my improved arrangements is shown on Sheet 1
of the accompanying Drawings; Figure 1 being a vertical section,
Figure 2 a side elevation, and Figure 3 a horizontal section. In these
Figures merely the cylinders with their immediate connections are
shown, and repetitions of some similar parts are indicated by colored
lines. The same reference numerals are used to mark the same or like
parts in all the Figures in which they occur. In this modification the
small high-pressure cylinder 1 and large low-pressure cylinder 2 are
placed side by side, with their pistons connected to cranks which are
diametrically opposite or nearly so, but which are not shown in the
Drawing. There are six cylindrical valve chambers each with its valve,
and they are placed with their axes parallel to each other and at right
angles to the plane passing through the axes of the cylinders. Two of
the valves 3, 3, are between the cylinders 1, 2, and control the passage
of the steam from the small one 1 to the large one 2, whilst other
two 4, 4, for admitting steam are on the outer side of the small
cylinder 1, the remaining two 5, 5, for the exhaust being on the outer
side of the large cylinder 2. The valves 3, 4, 5, and their chambers are
arranged and fitted like those of the same kind in single-cylinder engines,
and as will be easily understood from the Drawings; and the cylinders

page_text: are represented as steam-jacketed and as put together in the manner
described in the Specification of certain Letters Patent granted to me
and dated 20th May 1868 (No. 1659). All six valves may be worked
in any convenient way, as for example by a single vibrating disc; or
the four valves in connection with either of the cylinders may be worked
from a disc, whilst the other two valves may be worked by a separate
disc or rocking shaft. In either arrangement adjustable liberating gear,
such as is used in single engines of the same class, may be applied to the
high-pressure valves (4) for effecting the cut-off.
In the modification shown in Figures 1, 2, and 3 two vibrating
discs 6, 7, are employed; one, 6, being carried on a stud projecting from
the large cylinder 2, and acting by means of plain connecting rods indi-
cated by blue lines 8, in Figure 2, on levers on the ends of the spindles 9,
of the four valves 3, 3, 5, 5, appertaining to that cylinder. The other
vibrating disc 7 is carried on a stud projecting from the high-pressure
cylinder 1, and acts by connecting rods 10, fitted with liberating catches
and gear on levers on the spindles 11 of the two high-pressure
valves 4, 4. In most cases it will be better to impart the vibrating motion
to the discs 6, 7, from separate eccentrics on the crank shaft, but in
some cases they may be connected together or be otherwise arranged to
be actuated by a single eccentric or by a single pair of eccentrics. The
motion may be transmitted from the eccentrics to the discs in any
convenient manner.
In a second modification, which is shown in vertical section in
Figure 4, on Sheet 2 of the accompaning Drawings, only four valves are
used for the two cylinders 1, 2, those, 12, between the cylinders being
arranged to both admit steam to the small cylinder 1 and transfer it to
the large one 2, by making each valve with a hollow or concave covering
part, so as when in one position to cover and put in communication the
ports of both cylinders. The other two valves 5, 5, are for exhausting the
steam from the large cylinder 2, and are like the corresponding valves
of the first modification.
Figure 5 is a side elevation of the cylinders, showing a convenient
mode of working the four valves, namely, by means of a single vibrating
disc 6.
Figures 6 and 7 are a plan and side elevation of a horizontal blowing
engine with my improved arrangements adapted thereto. The air
cylinder 13 is represented as worked directly by a piston rod from the

page_text: small steam cylinder 1, but if preferred it may be worked directly from
the large steam cylinder 2. The steam cylinders are represented as
furnished with six valves, as in the modification shown on Sheet 1 of
the Drawings.
The second part of my Invention relates to improved appliances for
closing the steam valves (4) of engines like those shown in Figures 1, 2,
3, 6, and 7, and herein-before described, or for closing any steam valves
having the "cut-off" effected or controlled by means of liberating gear.
One modification of such appliances is shown as made with my
improvements in Figure 8, on Sheet 2 of the accompanying Drawings.
The parts are in duplicate to serve for the two opposite steam valves of
onc cylinder, and one set of the parts is shown in section. A plunger 14
is arranged to work through a stuffing box into a cylinder or chamber 15,
which is in communication with the condenser by a pipe 16, so that
the atmospheric pressure constantly tends to force the plunger inwards.
The chamber 15 is filled or partly filled with oil or other suitable liquid,
and the bottom of the plunger 14 is made conical to fit a conical seat 17
formed for it in the inner end of the chamber 15. The plunger 14 is
connected to the valve gear by the spindle 18 (as shown in Figure 2),
so as to be drawn outwards when the valve is opened, and on the gear
being released moves the valve back, its own momentum being gradually
checked close to the end of its traverse inwards by its having to displace
the oil out of its seat. Instead of the plunger 14 or its equivalent being
moved inwards by atmospheric or other fluid pressure the necessary
pressure for that action may be applied by a metallic or other spring,
the oil or other liquid being in all cases retained to prevent violent
concussion at the end of the inward movement.
Figure 9 is a sectional elevation of a modification embodying a
convenient mode of applying a metallic spring, a spiral steel spring 19
being placed between the plunger 14 and the cover of the chamber 15,
and in a state of compression sufficient for forcing the plunger 14 home
into its scat 17. It is the modification of my improved valve-closing
appliances shown in Figure 9 which is represented as applied to the
engines in Figure 2.
Having thus particularly described my said Invention, and the
manner in which the same is to be performed, I have to state that I do
not restrict myself to the precise details herein described or delineated,
but that what I believe to be novel and original and claim as the

page_text: Invention secured to me by the herein-before in part recited Letters
Patent is,―
1. The applying of cylindrical slide valves to compound or combined
high and low pressure cylinder steam engines, substantially in the modes
herein-before described.
2. The combining of an air cylinder with the improved compound
steam cylinders, substantially as herein-before described.
And, 3. The applying of oil or other suitable liquid to prevent the
concussion of plungers acted on by springs or equivalent pressure in
valve-closing appliances, substantially as herein-before described.
In witness whereof, I, the said William Inglis, have hereunto
set my hand and seal, this Fourteenth day of May, in the year of
our Lord One thousand eight hundred and sixty-nine.
5 Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
WILLIAM INGLIS. (L.S.)

page_text: he woras printed in Lates are vew
Filed 22nd July 1871.
En the Matter of a Patent granted to WILLIAM INGLIS, of
Manchester, in the County of Lancaster, Engineer, on the
Twenty-third day of November One thousand eight hundred
and sixty-eight, for his Invention of "IMPROVEMENTS IN STEAM
ENGINES AND IN BLOWING ENGINES."
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
entered by the said William Inglis at the Office of the Com-
missioners of Patents for Inventions, pursuant to an Act passed in
the Session of Parliament holden in the fifth and sixth years of the
reign of His late Majesty King William the Fourth, intituled "An
Act to amend the Law touching Letters Patent for Inventions,"
and also to an Act passed in the Session of Parliament holden in
the fifteenth and sixteenth years of the reign of Her present Majesty
Queen Victoria, intituled "An Act for amending the Law for
granting Patents for Inventions."

page_text: WHEREAS since the date of the said Letters Patent and of the filing
of the Final Specification thereof I have discovered that doubts may be
raised as to the validity of the second and third claims respectively of my
said Invention contained in the said Specification, and that some slight
verbal or literal errors exist in the said Specification :
And whereas I have been advised that it would be advisable to
disclaim such second and third claims respectively, and to correct
such verbal or literal errors, and to limit the said Specification to the
first claim of my Invention therein contained by making and executing
the Disclaimer and Memorandum of Alteration herein-after expressed
and contained:
And whereas such Disclaimer as aforesaid will render necessary an
alteration in the title of my said Invention by omitting from such title
the words "and in Blowing Engines:"
Now therefore, I, the said William Inglis, do hereby alter the title of
my said Invention to an Invention for "IMPROVEMENTS IN STEAM ENGINES,"
and I, the said William Inglis, do hereby disclaim the second and third
claims of my said Specification, and I do hereby alter the said Specifi-
cation by omitting the parts struck out and inserting the words written
in red ink in the copy of the same hereunder set forth so that the said
Specification when altered by this my Disclaimer and Memorandum of
Alteration shall be in the words, letters, and figures following, that is to
Bay:-
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
INGLIS, of Manchester, in the County of Lancaster, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of November, in
the year of our Lord One thousand eight hundred and sixty-eight, in
the thirty-second year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said William Inglis, Her
special license that I, the said William Inglis, my executors, admi-
nistrators, and assigns, or such others as I, the said William Inglis,
my, executors, administrators, and assigns, should at any time agree
with, and no others, from time to time, and at all times thereafter
during the term therein expressed, should and lawfully might make,

page_text: are diametrically opposite, or nearly so, but which are not shown in
the Drawing. There are six cylindrical valve chambers, each with
its valve, and they are placed with their axes parallel to each other
and at right angles to the plane passing through the axes of the
cylinders. Two of the valves 3, 3, are between the cylinders 1, 2,
and control the passage of the steam from the small one 1 to the large
one 2, whilst other two 4, 4, for admitting steam are on the outer side
of the small cylinder 1, the remaining two 5, 5, for the exhaust being on
the outer side of the large cylinder 2. The valves 3, 4, 5, and their
chambers are arranged and fitted like those of the same kind in single
cylinder engines, and as will be easily understood from the Drawings,
and the cylinders are represented as steam jacketed, and as put together
in the manner described in the Specification of certain Letters Patent
granted to me and dated 20th May 1868 (No. 1659). All six valves
may be worked in any convenient way, as, for example, by a single
vibrating disc, or the four valves in connection with either of the
cylinders may be worked from a disc, whilst the other two valves may
be worked by a separate disc or rocking shaft. In either arrangement
adjustable liberating gear, such as is used in single engines of the same
class, may be applied to the high-pressure valves (4) for effecting the
cut-off.
arrangement
In the modification shown in Figures 1, 2, and 3 two vibrating discs
6, 7, are employed, one 6 being carried on a stud projecting from the
large cylinder 2, and acting by means of plain connecting rods indicated
by blue lines 8 in Figure 2 on levers on the ends of the spindles 9 of
the four valves 3, 3, 5, 5, appertaining to that cylinder. The other
vibrating disc 7 is carried on a stud projecting from the high-pressure
cylinder 1, and acts by connecting rods 10, fitting with liberating catches
and gear on levers on the spindles 11 of the two high-pressure valves
4, 4. In most cases it will be better to impart the vibrating motion to
the discs 6, 7, from separate eccentrics on the crank shaft, but in some
cases they may be connected together or be otherwise arranged to be
actuated by a single eccentric or by a single pair of eccentrics. The
motion may be transmitted from the eccentrics to the discs in any
convenient manner.
arrangement
In a second modification, which is shown in vertical section in
Figure 4 on Sheet 2 of the accompanying Drawings, only four valves

page_text: are used for the two cylinders 1, 2, those 12 between the cylinders being
arranged to both admit steam to the small cylinder 1 and transfer it
to the large one 2, by making each valve with a hollow or concave
covering part, so as when in one position to cover and put in commu-
nication the ports of both cylinders. The other two valves 5, 5, are
for exhausting the steam from the large cylinder 2, and are like the
corresponding valves of the first modification arrangement.

page_text: mode of applying a metallie- spring, a spiral steel-spring-19-being-placed
between the plunger 14 and the cover of the chamber 15, and in a state-of
compression-sufficient for foreing- the plunger 14 home into its seat 17. It is
the modification of my improved valve closing appliances shown in Figure-9
which-is-represented as applied to the engines in Figure 2.
Having thus particularly described my said Invention, and the manner
in which the same is to be performed, I have to state that I do not
restrict myself to the precise details herein described or delineated; but
that what I believe to be novel and original and claim as the Invention
secured to me by the hercin-before in part recited Letters Patent is,-
+. The applying of cylindrical slide valves to compound or combined
high and low pressure cylinder steam engines substantially in the modes
herein-before described.
2.-The--combining of an air cylinder- with the improved--compound-steam
eylinders, substantially-as-herein-before-described.
And 3. The applying of oil or other suitable liquid to prevent the concussion-of
plungers-acted on by springs or equivalent pressure in valve elesing-appliances,
substantially as herein before decoribed.
In witness whercof, I, the said William Inglis, have hereunto set
my hand and seal, this Fourteenth day of May, in the year of
our Lord One thousand eight hundred and sixty-nine."
THAT TO
WILLIAM INGLIS. (L.S.)"
In witness whereof, I, the said William Inglis, have hereunto set
my hand and seal, this Twenty-fourth day of May, in the year of
our Lord One thousand eight hundred and seventy-one.

page_text: To the Commissioners for Patents for Inventions.
I hereby grant my fiat, giving leave to the above-named William Inglis
to file in the Great Seal Patent Office, with the Specification to which
the same relates, the above-written Disclaimer and Memorandum of
Alteration.