IMPROVEMENTS IN VALVES TO BLOWING ENGINES, ALSO APPLICABLE TO AIR AND OTHER PUMPS
Year: 1871

page_text: LETTERS PATENT to Charles John Galloway and John Henry
Beckwith, both of Manchester, in the County of Lancaster, for
the Invention of "IMPROVEMENTS IN VALVES TO BLOWING ENGINES, ALSO
APPLICABLE TO AIR AND OTHER PUMPS."
Sealed the 18th July 1871, and dated the 30th January 1871.
PROVISIONAL SPECIFICATION left by the said Charles John Galloway
and John Henry Beckwith at the Office of the Commissioners of
Patents, with their Petition, on the 30th January 1871.
We, CHARLES JOHN GALLOWAY and JOHN HENRY BECKWITH, both
of Manchester, in the County of Lancaster, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN VALVES TO BLOWING ENGINES,
ALSO APPLICABLE TO AIR AND OTHER PUMPS," to be as follows:-
:―
Our Invention consists in constructing the inlet and delivery valves to
the blowing cylinders of blowing engines of thin metal discs; these may

page_text: be held in position by merely having a central hole fitting loosely upon
a spindle fixed in the central boss of the valve seat, upon the top surface
of which boss, as also of the annular seat, the disc valve takes a flat
air-tight bearing; or the valve may be made without the central hole,
and then be held in position by small guide studs screwed into the valve
seat immediately outside the edge of the valve. These studs will be
provided with stops to prevent the valve opening too widely. By the
employment of such thin metal discs the inlet and delivery valves can
be brought very close together, thus obviating any unnecessary and
detrimental space in the passages. In arranging such valves in the
annular or other valve boxes of the blowing cylinder the delivery valve
seat may be made slightly smaller in diameter than the inlet valve seat,
so that for fitting the former in its place it can be passed through the
hole for the latter; both valve seats are coned in the same direction,
and are secured by one and the same spindle passing right through the
valve box and secured outside by a nut, by tightening which and also a
nut at the other end the valve seats are drawn into their holes. The
delivery valve seat is extended downwards somewhat so as to act as a
stop to the inlet valve, and a stop is also fixed on the spindle for the
delivery valve. Or the valves may be fixed directly on to the cylinder
covers, and in cases where for convenience it may be advisable to place
them in inverted positions or even moving horizontally they may, if
necessary, be held in position by light springs of steel, india-rubber, or
other suitable material. It is evident that this form of valve may be
fixed in various ways and positions with a view to simplicity of
construction and arrangement, and saving of space between such valves
and the piston.
Such before described valves are also applicable as non-return or
back-pressure valves in cases in which the ordinary piston or slide valves
are used in blowing engines.
We also employ such before described sheet metal disc valves for air
and fluid pumps generally, such as for the pump buckets, clacks, or foot
and delivery valves, they being more durable and suitable for higher
temperatures than india-rubber, canvas, or leather valves.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patents,
filed by the said Charles John Galloway and John Henry Beckwith
in the Great Seal Patent Office on the 28th July 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
JOHN GALLOWAY and JOHN HENRY BECKWITH, both of Manchester, in
the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of January, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, tho said Charles John Galloway and John Henry
Beckwith, Her special licence that we, the said Charles John Galloway
and John Henry Beckwith, our executors, administrators, and assigns,
or such others as we, the said Charles John Galloway and John Henry
Beckwith, our 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
usc, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN VALVES TO BLOWING ENGINES, ALSO APPLICABLE TO AIR AND
OTHER PUMPS," upon the condition (amongst others) that we, the said
Charles John Galloway and John Henry Beckwith, our executors or
administrators, by an instrument in writing under our or their hand
and seals, or under the hand and seal of one of us or them, 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 Seal Patent Office within six calendar months
next, and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Charles John Galloway and John
Henry Beckwith, do hereby declare the nature of the said Invention, and
in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement thereof, reference
being had to the accompanying Sheet of Drawings, and to the figures
and letters marked thereon, that is to say :-
Our Invention consists in constructing the inlet and delivery valves
to the blowing cylinders of blowing engines of thin metal discs, these
may be held in position by merely having a central hole fitting loosely

page_text: upon a spindle fixed in the central boss of the valve seat, upon the top
surface of which boss, as also of the annular seat, the disc valve takes a
flat air-tight bearing, or the valve may be made without the central hole
and then be held in position by small guide studs screwed into the valve
seat immediately outside the edge of the valve; these studs will be
provided with stops to prevent the valve opening too widely. By the
employment of such thin metal discs the inlet and delivery valves can
be brought very close together, thus obviating any unnecessary and
detrimental space in the passages. In arranging such valves in the
annular or other valve boxes of the blowing cylinder, the delivery valve
seat may be made slightly smaller in diameter than the inlet valve seat,
so that for fitting the former in its place it can be passed through the
hole for the latter; both valve seats are coned in the same direction, and
are secured by one and the same spindle passing right through the valve
box, and secured outside by a nut, by tightening which and also a nut
at the other end the valve seats are drawn into their holes. The delivery
valve seat is extended downwards somewhat so as to act as a stop to the
inlet valve, and a stop is also fixed on the spindle for the delivery valve.
Or the valves may be fixed directly on to the cylinder covers, and in
cases where for convenience it may be advisable to place them in inverted
positions, or even moving horizontally they may if necessary be held in
position by light springs of steel, india-rubber, or other suitable material.
It is evident that this form of valve may be fixed in various ways and
positions with a view to simplicity of construction and arrangement, and
saving of space between such valves and the piston.
Such before described valves are also applicable as non-return or back
pressure valves in cases in which the ordinary piston or slide valves are
used in blowing engines.
On the accompanying Sheet of Drawings are shewn some of the
various modes in which our before described thin metal disc valves may
be applied.
Figure 1 shews a vertical section, and Figure 2 shews a sectional plan
on line X, X, Figure 1, of a blowing cylinder A, in the annular valve
boxes B, B, of which are fitted the thin metal inlet valves C, C, and
delivery valves D, D, which are shewn to an enlarged scale at Figures 3
and 4. The valve seats E, F, are secured in the valve boxes by means of
one and the same spindle G passing through the top of the valve box, the
seats being tightened up by the screw nuts G', G². The valve seats may be

page_text: fitted in an air-tight manner either by means of india-rubber rings H, H,
placed under shoulders on the valve seats, as shewn at Figures 1 and 3,
or they may be coned and fitted into conical holes in the valve box, as
shewn at Figure 4. The delivery valves D and their seats F are made
sufficiently smaller in diameter than the inlet valves C and valve seats E
to allow of their being passed through the holes for the latter in the
valve box. The disc valves C, D, have central holes through which the
spindle G passes, and they rest in an air-tight manner, with their outer
circumference upon the annular seats, and with the central portion upon
the central bosses of the seats. The extent of their motion is regulated
by the stops or guards I, J, of which the stops I to the inlet valves are
conveniently made to form part of the seats F of the delivery valves, as
shewn. Holes i, j, are formed in the stops in order to prevent the valves
from adhering to them when raised.
Figure 5 shews a vertical section, and Figure 6 shews a sectional plan
on line Y, Y, Figure 5, of a blowing cylinder A of different construction,
in which the disc valves C, D, are fixed directly in the cylinder covers
A', A; C, C, are the inlet valves, and D, D, are the delivery valves.
The former are drawn against their seats by springs K, K, attached
thereto, and to brackets L, L, fixed to the covers A', A'; they are guided
in their motion by pins M, M, provided with stops fixed inside the
covers at the circumference of the valves. The delivery valves D are
pressed down upon their seats by springs N, N, fitted over small
spindles fixed centrally to the valves, and passing through holes in the
guides O, O.
Figures 7 and 8 shew the improved disc valves applied as non-return
valves to piston valves of blowing engines; Figure 7 shews a longitudinal
section through the valve box, and Figure 8 shews a transverse section.
P is the piston valve; Q, Q, are the ports of the blowing cylinder, and
R is the delivery air passage, in which are fitted the disc valve S, S,
which have central holes through which the bolts T pass that carry the
guards U, U, for controlling the extent of lift of the valves.
Figures 9 and 10 shew the application of the disc valves to the air
pumps of steam engines, or to pumps generally. Figure 9 shews a
5 vertical section, and Figure 10 shews a plan of the pump. The disc
valves are here applied at V, V, as suction valves; W, W, as bucket
valves; and at Z, Z, as delivery valves. The guards a, a, which have

page_text: '
projecting central bosses over which the disc valves fit with central holes
are secured to the seats by the screw bolts b, b.
Having thus described the nature of our Invention, and in what
manner the same is to be performed, we wish it to be understood that we
do not limit ourselves to the various modes of applying the same as
shown on the accompanying Drawings; but what we claim is,―
First. The use in blowing engines and in air and other pumps
generally of valves formed of thin metal discs, substantially as herein-
before set forth.
Second. The special modes of constructing and arranging such afore-
said thin metal disc valves herein-before described with reference to the
accompanying Drawings.
In witness whereof, we, the said Charles John Galloway and John
Henry Beckwith, have hereunto set our hands and seals, this
Twenty-second day of July, in the year of our Lord One thousand 1
cight hundred and seventy-one.
CHARLES JOHN GALLOWAY. (L.S.)
JOHN HENRY BECKWITH.
(L.S.)
Signed, sealed, and delivered
in, the presence of
JNO. B. PAYNE,
Solicitor,
Manchester.