IMPROVEMENTS IN SELF-ACTING ESCAPE OR RELIEF VALVES APPLIED TO THE CYLINDERS OF STEAM
Year: 1867

page_text: LETTERS PATENT to Walter Samuel Scott, of 11; Lacey Terrace,
Kennington, and William Henry Steel, of 159, Park Road, Clapham,
both in the County of Surrey, for the Invention of "IMPROVEMENTS IN
SELF-ACTING ESCAPE OR RELIEF VALVES APPLIED TO THE CYLINDERS OF STEAM
Sealed the 10th December 1867, and dated the 3rd July 1867.
PROVISIONAL SPECIFICATION left by the said Walter Samuel Scott and
William Henry Steel at the Office of the Commissioners of Patents,
with their Petition, on the 3rd July 1867.
We, WALTER SAMUEL SCOTT, of 11, Lacey Terrace, Kennington, and
WILLIAM HENRY STEEL, of 159, Park Road, Clapham, both in the County of
Surrey, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN SELF-ACTING ESCAPE OR RELIEF VALVES APPLIED TO THE CYLINDERS OF STEAM
ENGINES," to be as follows:-
This Invention has for its object improvements in self-acting escape or relief
valves applied to the cylinders of steam engines for the purpose of effecting
the free escape of the condensed steam and water that may flow over into the
cylinders from the priming of the boilers. This is effected by the fitting of a
pipe from each end of the cylinder to a box or chamber containing two valves
fixed on the same spindle with corresponding valve seats in such a manner
that one valve acts upon the other alternately, so that as one valve is. closed

page_text: by the steam entering one end of the cylinder from the boiler the other is
thereby opened to allow the escape of the water from the condensation of the
steam and priming water from the exhaust end of the cylinder. We also
effect the same object by fixing separate valve boxes at each end of the
cylinder, the spindle of each valve connected by a rod or other suitable means,
so that the induction of steam may close the one and open the other, thereby
permitting the eduction of the condensed steam and priming water.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Walter Samuel Scott and William Henry Steel in the
Great Seal Patent Office on the 2nd January 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WALTER
SAMUEL SCOTT, of 11, Lacey Terrace, Kennington, and WILLIAM HENRY
STEEL, of 159, Park Road, Clapham, both in the County of Surrey, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Third day of July, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Walter Samuel Scott and William Henry Steel, Her special licence
that we, the said Walter Samuel Scott and William Henry Steel, our execu-
tors, administrators, and assigns, or such others as we, the said Walter
Samuel Scott and William Henry Steel, 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 "IMPROVEMENTS IN ESCAPE OR RELIEF VALVES TO THE CYLINDERS OF STEAM
ENGINES," upon the condition (amongst others) that we, the said Walter
Samuel Scott and William Henry Steel, our executors or administrators, by
an instrument in writing under 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 we, the said Walter Samuel Scott and William
Henry Steel, do hereby declare the nature of our said Invention, and in what

page_text: manner the same is to be performed, to be particularly described and ascer
tained in and by the following statement :-
This Invention has for its object improvements in self-acting escape or relief
valves applied to the cylinders of steam engines for the purpose of obtaining
the free escape of the condensed steam and any water that may be carried
over into the cylinders from the boiler. This is effected by the fitting of a
pipe from each end of the cylinder to a box or chamber containing two valves
fixed on the same spindle with corresponding valve seats in such a manner
that one valve acts upon the other alternately, so that'as one valve is closed by
the steam entering one end of the cylinder from the boiler the other is thereby
opened to allow the escape of the water from the exhaust end of the cylinder.
We also effect the same object by fixing separate valve boxes at each end
of the cylinder, the spindle of each valve connected by a rod or other
suitable means, so that the induction of steam may close the one and open the
other, thereby allowing the eduction of the water.
Having thus stated the nature of our Invention we will proceed to the
description of the Drawings..
Figure 1, horizontal double self-acting relief valve. A and Al, inlets
connected with each end of cylinder'; B and B1, valves; C, rod connecting
the two valves B and B 1; E and E¹, valve chambers with passages for
escape of water shewn in dotted lines; D, outlet for the discharge of
water.
Figure 2, transverse section of valve chamber shewing passage for escape
of water.
Figure 3, vertical double self-acting relief valve; A and A¹, inlets connected
to top and bottom of cylinder; B and B¹, valves, B¹ is made larger than B
in order to overcome weight of rod, &c.; C, rod connecting the two valves B
and B¹; D, outlet for discharge of water; E and E¹, valve chambers with
passages for escape of water, shewn in dotted lines; section same as
in Figure 2.
Figure 4, vertical double self-acting relief valve. A and A¹, inlets con-
nected to top and bottom of cylinder; B and B¹, valves; C, rod connecting
the two valves B and B¹; D, outlet for discharge of water; E and E¹, valve
chambers with passages for escape of water, shewn in dotted lines; F, piston
attached to bottom valve to overcome weight of rod, &c.
Figure 5, transverse section of Fig. 4, shewing the passage G for escape of
water.
Figure 6, A and A¹, inlets connected with each end of cylinder; B and B¹,
valves suspended by hinge joints at top of valve chambers; cast on one side of

page_text: each valve is a small joint for the long rod C to be connected with, by which
the working of the valves is effected; D, outlet for discharge of water; E and
E', valve chambers with passages for escape of water.
Figure 7 vertical double self-acting relief valve. A and A¹, inlets, connected
with top and bottom of cylinder; B and B', valves; B¹ is valve suspended by
hinge joint, cast on one side is a projecting arm connected with rod C to effect
the working of the valve.
Having thus described the nature of our Invention, with Drawings of
the same, we would have it understood that what we claim is, the action of
one valve upon the other, adapted in the construction of a double self-acting
relief valve for effecting the discharge of water from the cylinders of steam
engines.
In witness whereof, we, the said Walter Samuel Scott and William
Henry Steel, have' hereunto set our hands and seals, this Second day
of January, in the year of our Lord One thousand eight hundred and
sixty-eight.
WALTER SAMUEL SCOTT. (L.S.)
WILLIAM HENRY STEEL. (L.S.)
WALTER SAMUEL SCOTT. (L.S.)
WILLIAM HENRY STEEL. (L.S.)