A NEW APPARATUS FOR RAISING SAFETY VALVES IN CASES OF EITHER HIGH STEAM OR LOW WATER
Year: 1872

page_text: LETTERS PATENT to Samuel Lees, of Huddersfield, in the County of
York, Engineer, for the Invention of "A NEW APPARATUS FOR RAISING
SAFETY VALVES IN CASES OF EITHER HIGH STEAM OR LOW WATER."
Scaled the 24th January 1873, and dated the 27th July 1872.
PROVISIONAL SPECIFICATION left by the said Samuel Lees at the
Office of the Commissioners of Patents, with his Petition, on the
27th July 1872.
4
°
I, SAMUEL LEES, of Huddersfield, in the County of York, Engineer,
do hereby declare the nature of the said Invention for "A NEW APPARATUS
FOR RAISING SAFETY VALVES IN CASES OF EITHER HIGH STEAM OR Low WATER,"
to be as follows:-
This Invention consists of an apparatus fixed on the top of a steam
boiler or any other vessel requiring relief from internal pressure, fixed in
a vertical or other form, and consists generally of a cylinder containing
a ball valve, seating and piston, to which is attached a rod, so that when
the ball valve rises from its seat it forces the piston and regulates the

page_text: lift of a lever connected with a valve to any height required. The
weighting of the apparatus and valve can be accomplished by lever
weights inside the boiler or vessels.
And in order that my said Invention may be readily understood,
reference is made to the accompanying Drawings, wherein a shows a
small block for the apparatus to be erected upon; c is a cast or. wrought
iron pipe; D is a brass seating, or any other metal I may prefer to use
for it; E is a ball valve fitted to the seating D, and also made of brass or
other metal; B is a rod of wrought iron attached to the valve E and
weighted down by a weight N; G is a cylinder, made of brass or other
metal; F is a piston, made of brass or other metal and fitted inside the
cylinder G, and when the valve E rises from its seat it forces the piston F,
which is attached to the rod H, and coupled to the rod J with a brass
coupling J, which has a nut K on the top underneath the joint L,
which regulates the lift of the lever M and the valve O, to any height
required.
The weighting of the apparatus and the valve O can be weighted by
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Samuel Lees in the Great Seal Patent Office on the
24th January 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
LEES, of Huddersfield, in the County of York, Engineer, send
greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of July, in the year
of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Samuel Lees, Her special licence
that I, the said Samuel Lees, my executors, administrators, and
- assigns, or such others as I, the said Samuel Lees, my executors, ad-
ministrators, 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,
•

page_text: within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "A NEW APPARATUS FOR
RAISING SAFETY VALVES IN CASES OF EITHER HIGH STEAM OR LOW WATER,"
upon the condition (amongst others) that I, the said Samuel, Lees,
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 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 Lees, 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 :—
This Invention consists of an apparatus to be fixed on the top of a
steam boiler or any other vessel requiring relief from internal pressure,
fixed in a vertical or other position, and consists generally of a cylinder
containing a ball valve, seating, and piston, to which is attached a rod,
so that when the ball valve rises from its seat it forces the piston and
regulates the lift of a lever connected with a valve to any height
required.
And in order that my said Invention may be readily understood,
reference is made to the accompanying Drawings, wherein A shews a
small block for the apparatus to be erected upon; C is a cast or wrought
iron pipe; D is a scating of brass or any other metal I may prefer to use
for it; E is a ball valve fitted to the seating D, and also made of brass or
other metal; B is a rod of wrought iron attached to the valve E and
held down by a weight N; G is a cylinder, made of brass or other metal;
F is a piston, made of brass or other metal and fitted inside the cylinder G,
and when the valve E rises from its seat it forces the piston F, which is
attached to the rod H and coupled to the rod J with a brass coupling I,
and which, has a nut K on the top underneath the joint L, which
regulates the lift of the lever M and the valve O; to any height
required.
Having thus described the nature of this my said Invention, and the
mode of carrying the same into effect, I declare that what I claim and
desire to be secured to me by the herein-before in part recited Letters

page_text: Patent is, the said Invention for a new apparatus for raising safety
valves in cases of either high steam or low water, substantially as herein
described, and as shewn on the accompanying Drawings, or any mere
modification thereof,
B
In witness whereof, I, the said Samuel Lees, have hereunto set
my hand and seal, this Twenty-third day of January, in the
year of our Lord One thousand eight hundred and seventy-
three.