AN IMPROVEMENT IN THE CONSTRUCTION OF GAS REGULATORS OR GOVERNORS
Year: 1825

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
CROSLEY, of Cottage Lane, City Road, in the County of Middlesex, Gentle
man, send greeting.
WHEREAS His most Excellent Majesty King George the Fourth, by.
His Letters Patent under the Great Seal of Great Britain, bearing dato at
Westminster, the First day of February, in the sixth year of His reign,
did give and grant unto me, the said Samuel Crosley, my exors, admors, and
assigns, that I, the said Samuel Crosley, my exors, admors, and assigns,
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England and Wales and the Town of Berwick-
upon-Tweed, my Invention of "AN IMPROVEMENT IN THE CONSTRUCTION OF
GAS REGULATORS OR GOVERNORS;" in which Letters Patent there is contained
a proviso obliging me, the said Samuel Crosley, particularly to describe and
ascertain the nature of my said Invention, and in what manner the same
is to be performed, by an instrument in writing under my hand and seal,
and to cause the same to be inrolled in His Majesty's High Court of
Chancery within six calendar months next and immediately after the date
of the same Letters Patent, as in and by the same Letters Patent, relation
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Samuel Crosley, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by these Presents, reference being made to the Draw-
ing hereunto annexed (that is to say):-
The gas governor is an instrument for the purpose of so regulating the

page_text: discharge of gas through any opening or burner that it shall issue therefrom
with a uniform velocity, or nearly so, notwithstanding any variations which
may take place in the pressure within the pipes of supply. In order to shew
more clearly the nature of my said Invention, I shall state two modes by
which this object has already been effected. In both of theso modes the gas
is made to pass through an aperture capable of being increased and diminished
in its opening by the variations in the pressure or force of the gas itself. One
of these modes is by means of a small gas holder or inverted vessel, the
mouth of which is immersed in water. The gas passing from the source of
supply to the place of exit is made to pass into and out of this inverted vessel,
which is made of such a weight as is necessary to contain the gas at that
degree of compression which is sufficient for the supply of the burners, and to
enable it to rise or fall with any variations of pressure which may occur
within the pipes. The gas-holder, by its own action is made to regulate the
size of the aperture that admits the gas into it by means of a conical rod
suspended by its smallest end at the top of the inside of the gas-holder. This
conical rod, with its widest end downwards, passes through the aperture, so
that when the gas-holder rises to its highest elevation the cone fills the
aperture, and on the contrary, when the gas-holder falls to its lowest point,
the cone also descends and leaves the aperture wide open. Another mode
referred to, is by connecting the conical rod to the upper or moveable part of
an air-tight vessel made to collapse in a similar manner to that of a common
or organ bellows, the two boards or plates at top and bottom being connected
by means of leather or other flexible substance forming the sides and pro-
ducing an air-tight vessel. One of the plates is made stationary to contain the
inlet and outlet aperture, the other is moveable in order to give motion to the
conical rod which passes through the inlet aperture and regulates the supply
after the same manner as the gas-holder just described.
My improvement in the construction of gas regulators or governors consists
in the using of a small tank or cup, having the regulating aperture in the
bottom, the upper part of which near to the top is covered with gold-beater's
skin or any other delicate and flexible air-tight substance joined air-tight
round the sides of the tank or cup, but instead of stretching this cover tight
it must have sufficient play, so that when a slight force or pressure of the gas
is allowed to enter the vessel the flexible cover will rise in the centre forming
a convex top; on the contrary, when there is no pressure the center of the
cover will fall and form a concave top. To the center of this flexible cover
I attach a conical rod which passes through the inlet or regulating aperturo
at the bottom of the tank, and the outlet through which the gas passes to
the burners is at the side of the tank. By these means I effect the same

page_text: operation as is already described by the two former modes. The rod, instead
of being conical may be of four or any number of sides, so that it is of a
shape gradually thickening towards the bottom. One of the forms among
many others in which this governor may be constructed is represented in the
Drawing annexed, being in section taken nearly through the middle of the
apparatus, and is explained by the references thereto, but the size, form, and
arrangement of the parts may be varied according to the number of burners,
the situation in which it is placed, or other circumstances attending the same,
as would be naturally suggested by my descriptions, to persons conversant
with the subject, without at all deviating from the principle of my Invention.
A, A, B, B, represents a section of my improved gas-governor taken nearly
through the middle of the apparatus. c, c, c, is the flexible cover made air-
tight at the sides between two plates or rings, with lating or otherwise. c, d, is
the conical rod which is attached to the flexible cover by pastboard collars or
other washers luted and screwed air-tight against a collar near the top of the
rod. ff, is the aperture in which the conical part of the regulating rod
moves. The present position of the flexible cover represents the aperture at
its greatest opening; but if the gas at a certain pressure be admitted under
the flexible cover it will rise up as represented by the dotted line, and the
widest part of the regulating cone will then close the aperture. h, h, h, is an
outside cap for protecting the flexible cover from injury, the gas coming from
the source of supply enters at the pipe e, passes through the aperture f, f, and
goes out to the burners at the outlet pipe 9, and any required pressure is put
on to the flexible cover by small weights upon the card in the centre. I do
not confine myself to any particular material to be used in the construction of
the tank or other parts of this governor; it may be constructed of iron, tin,
wood, or other suitable material, and the flexible cover may be made of gold-
beater's skin, varnished silk, or any other material capable of being made air-
tight, and of sufficient flexibility.
In witness whereof, I, the said Samuel Crosley, have hereunto set my
hand and seal, this First day of August, in the year of our Lord
One thousand eight hundred and twenty-five, and in the sixth year of
the reign of King George the Fourth.
SAM (Ls.) CROSLEY
35 Signed and sealed by the within-named.
Samuel Crosley, in the presence of
JAMES BURRA,
Sol', 8,-King S',
London.

page_text: AND BE IT REMEMBERED, that on the First day of August, in the
year of our Lord 1825, the aforesaid Samuel Crosley came before our said
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the 5
tenor of the Statute made for that purpose.
Inrolled the First day of August, in the year of our Lord One thousand
eight hundred and twenty-five.