CERTAIN IMPROVEMENTS IN VALVES FOR STEAM ENGINES
Year: 1863

page_text: LETTERS PATENT to Samuel Bury, of Manchester, in the County of Lan-
caster, Calenderer and Finisher, and John Price, of the same Place,
Engineer, for the Invention of "CERTAIN IMPROVEMENTS IN VALVES FOR
STEAM ENGINES."
Sealed the 26th January 1864, and dated the 4th August 1863.
PROVISIONAL SPECIFICATION left by the said Samuel Bury and John
Price, at the Office of the Commissioners of Patents, with their Petition,
on the 4th August 1863.
We, SAMUEL BURY, of Manchester, in the County of Lancaster, Calenderer
and Finisher, and JOHN PRICE, of the same Place, Engineer, do hereby declare
the nature of the said Invention for "CERTAIN IMPROVEMENTS IN VALVES FOR
STEAM ENGINES," to be as follows:-
Our Invention relates to an arrangement of valves to be employed in a
similar position and for the same purpose as the ordinary "throttle valve,"
that is, to regulate the amount of steam to be supplied to the cylinders in
steam engines.
The improvements consist in the employment of two ordinary conical valves,
each having a "seating" near the ends of a horizontal partition or plate,
which divides a steam box into an upper and lower portion. The said valves
are connected by means of vertical rods passing through stuffiing boxes in the
steam-box cover to each end of a centrally balanced beam, which is connected
to the ordinary "governor " of the engine, whereby the slightest alteration in

page_text: the position of the "governor" is caused to elevate or depress one end of the
beam, and so to open or close both valves simultaneously, so that the amount
of steam which is supplied to the lowest compartment becomes regulated with
precision in its passage to the upper and so to the cylinders, the balancing
of the valves effecting a considerable improvement in the regulation of the
steam.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Bury, and John Price in the Great Seal Patent
Office on the 3rd February 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, SAMUEL
BURY, of Manchester, in the County of Lancaster, Calenderer and Finisher,
an: JOHN PRICE, of the same Place, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of August, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year .of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said Samuel Bury and John Price, Her special license that we, the
said Samuel Bury and John Price, our executors, administrators, and
assigns, or such others as we, the said Samuel Bury and John Price, 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, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "CERTAIN IMPROVEMENTS IN VALVES
FOR STEAM ENGINES," upon the condition (amongst others) that we, the said
Samuel Bury and John Price, our executors or administrators, by an instru-.
ment in writing under our, or one of our, 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 Seal Patent Office within six calendar months next.
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Samuel Bury, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following.
statement and accompanying Drawings (that is to say) :-
:-
Our Invention relates to an arrangement of valves to be employed in a

page_text: similar position and for the same purpose as the ordinary "throttle valve,"
that is, to regulate the amount of steam to be supplied to the cylinders in
steam engines.
The improvements consist in the employment of two ordinary conical or
other valves, each having a "seating" near the ends of a horizontal partition or
plate which divides a steam box into an upper and lower portion. The said
valves are connected by means of vertical rods passing through stuffing boxes
in the steam-box cover to each end of a centrally balanced beam, which is
connected to the ordinary "governor" of the engine, whereby the slightest
alteration in the position of the "governor" is caused to elevate or depress
one end of the beam, and so to open or close both valves simultaneously, so
that the amount of steam which is supplied to the lowest compartment
becomes regulated with precision in its passage to the upper, and so to the
cylinders, the balancing of the valves effecting a considerable improvement in
the regulation of the steam.
In order that the Invention may be better understood and explained in
detail, we have hereunto attached a Sheet of Drawings made about the full
size, having letters of reference marked upon corresponding parts.
Fig. 1 represents a longitudinal sectional view of the apparatus to be
employed as a "throttle valve," in which the valves are shewn slightly open
as admitting steam from the lower to the upper portion or division of the
steam box.
In Fig. 1, a, a, is a steam box formed into an upper passage b and a lower
passage c, by means of the plate or partition d, upon the upper and lower
surface of which the valves e, e, close, and wherewith when closed a steam-
tight joint is formed. These valves are here shewn as "plate valves," but the
ordinary conical or other form of valve may be used, so long as the surfaces
upon which the steam nets are of the same area. The valves are connected
by means of the spindles and shafts f, f', (which pass through "stuffing
boxes") to the balanced lever g, and the spindle f¹ is connected to the lever
from the ordinary or other "governor," so that the valves become acted upon
by the "governors" to admit or withhold steam from the cylinders, both
valves both valves being opened and closed simultaneously, whereby the
passage of the steam is regulated with precision. The arrows indicate the
direction of the steam.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, we wish it to be distinctly
understood that we claim,-
First, the novel application and use of two valves connected at each end of

page_text: a balanced lever, and acting simultaneously above and beneath (or at cach
side of) a plate or partition dividing the steam box for regulating the passago
of steam through the valve opening therein.
Secondly, we claim the general arrangement, construction, and combination
of the apparatus as berein-before described, set forth, and fully illustrated in
the Drawings attached.
In witness whereof, I, the said Samuel Bury, have hereunto set my hand
and seal, this First day of February, in the year of our Lord One
thousand eight hundred and sixty-four.
SAMUEL BURY. (L.S.)