A NEW METHOD OF REGULATING THE ADMISSION OF STEAM INTO PIPES OR OTHER VESSELS, AND FOR THE HEATING OF BUILDINGS AND OTHER PLACES
Year: 1818

page_text: TO ALL AND SUNDRY TO WHOM THESE PRESENTS SHALL
COME, I, HENRY CREIGHTON, of the City of Glasgow, Cevil Engineer, send
greeting.
WHEREAS His most Excellent Majesty King George the Third did,
by His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-second day of
July last, give and grant unto me, the said Henry Creighton, His especial licence
that I, the said Henry Creighton, during the term of fourteen years, in manner
therein-after mentioned, should and lawfully might use, exercise, and vend,
within England, Wales, and Town of Berwick-upon-Tweed, my Invention of
"A NEW METHOD OF REGULATING THE ADMISSION OF STEAM INTO PIPES OR OTHER
VESSELS, AND FOR THE HEATING OF BUILDINGS AND OTHER PLACES;" in which
Letters Patent there is contained a proviso obliging me, the said Henry
Creighton, by an instrument in writing under my hand and seal, to cause a
particular description of the nature of the said Invention, and in what manner
the same is to be performed, to be enrolled in His Majesty's High Court of
Chancery within two calendar months after the date of the said recited Letters

page_text: Patent, as in and by the same, relation being thereunto had, may more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Creighton, do hereby declare that my said Invention is described in
manner following, that is to say:
My Invention consists in the application of the force or power obtained by
the expansion and contraction of the pipes conveying and containing steam, or
by the expansion and contraction of other pipes or vessels, bars or rods,
connected with or placed pear to the pipes for conveying or containing steam,
to effect and regulate the admission of steam into the pipes aforesaid, and I
apply this expanding and contracting force or power to regulators for admitting
the steam in different methods, as circumstances may require. Such regulators
may consist of cocks, or valves, or other machinery now commonly employed.
My usual methods of applying the aforesaid force or power to the moving of
these regulators are as follows:-
First, A, B (Figure 1), is a pipe made of metal or other substance, capable
of being expanded by heat, for containing steam, and used to warm any
building or other place requiring heat. The end A is fastened to a wall or
other fixture, and near it is connected a small pipe a, for taking off the
condensed steam and air, and conveying the same into, any suitable place.
C is a pipe for supplying steam from the boiler in which it is generated.
D is a valve box, and d a valve which regulates the admission of the steam
into the pipe A, B. The valve box D is made fast, to a wall or other fixture,
and attached to it is a pipe E, connected by means of a stuffing box or sliding
joint with the end B. of the pipe, A, B, so that when the valve d is open there
is, a free communication betwixt the pipe last mentioned and that marked C.
9, is a bent lever centered upon a bracket or support affixed to the valve
box D ; one of its extremities. ¿ is connected with the stem of the valve d by
means of a joint, or otherwise, and the other j connected with, the end B of
the pipe, A, B, by a rod or link k, jointed at the ends, and having an adjusting
screw to, regulate its length. m is a spring acting upon the bent, lever, so that
it has always a tendency to keep the valve d shut. When the pipe A, B,
is not expanded by heat, the length of the rod K is adjusted so that
the valve d shall be open; when steam is admitted it, causes the pipe to
expand, and allows, the spring, m, to close the valve, d, gradually, until it admits
no, more steam than is necessary to keep the aforesaid pipe A, B, wholly or
partially hot; as may be required; that is, to say, if the pipe is. required to be
wholly heated, the rod or link k must, be so adjusted that it shall just allow the

page_text: valve d to close when said pipe is full of steam, and expanded to its greatest
length. If a part of the pipe when heated gives sufficient warinth for any
required purpose, then k must be lengthened so as to allow the valve to close
when such part is filled with steam and expanded. The pipe A, B, may be
placed horizontally, inclined, br. vertical, as circumstances may require, and
the position of the valve and its apparatus varied to suit different situations.
Great nicety is not requisite in the proportion which the size of the pipe C
and the valve d bear to the surface of the heating pipe A, B. One square inch
of area in the valve and pipe C to thirty square feet of surface of the heating
pipe A, B, will be sufficient for general, purposes of warming buildings to a
moderate degree of heat; but in heating vessels containing water or other
liquids, or in heating articles in a wet or moist state; where a quick process of
evaporation is required to dry them, the size of the valve and pipe for
admitting steam must be enlarged according to circumstances.
Secondly, the said expansion, force, or power may be applied to fegulate the
admission of the steam by the use of a rod of bar placed near and attached to the
apparatus in manner shewn in Figure 2. P, Q, R; S; is the section of a vessel
required to be heated (and is here shewn), containing an inner one p, q, r, §;
and which may contain water or other substance to be acted upon by the
heat). C, D, d, the pipe, valve box, and valve for admitting the steam;
i, j, and m, à lever and spring acting for the same purposes as in
Figure 1, though arranged in different situations, as an inspection of the
Figure will shew.
d, R, á pipe for conveying off the condensed steam
from the vessel P, Q, R, S. A, B, à bar or rod of metal or other substance
that will expand when heated, made fast at A, and passing through the pipe
a, R, to the lever g, i, j, (contained within the vessel last mentioned), and to
one end of which lever it is connected by a joint as shewn. The rod A, B,
is provided with an adjusting screw, and is so regulated that when it and the
vessels and apparatus are cold the valve d shall be open, and when steam is
admitted. and the whole heated, the expansion of the aforesaid rod will act
upon the valve and regulate the admission of the steam in the manner
described in Figure 1. The situation and form of the lever and valve box
may be varied, and the pipe a, R; may be placed horizontally, inclined, or
vertical, according to circumstances, and may be of any convénient length, ifi
order to suit that of the bar A, B; so as to obtain a greater or lesser degree
of expansion suited to the purpose required. In situationis where a great
length of bar or pipe would be inconvenient; the arrangeïneitt shewn iii
Figure 3, No. 2, may be adopted. The bat A; By instead of being niade fast

page_text: at the end A, is there jointed to the end of the lever A, t, u, centered
and supported at t; the end u is connected.with a rod which joins a pro-
jection firmly attached to the end a of the pipe a, R. It is obvious that.
when this pipe expands by heat that it will act upon. the lever u, t; A,
and move its end A in the direction of A, B, and thereby encrease the
quantity of motion and effect of the bar A, B, in regulating the admission of
the steam.
I have thus described different methods by which the aforesaid force or
power obtained by the expansion and contraction of the pipes containing and
conveying steam, or by the expansion and contraction of other pipes or vessels,
bars, or rods connected with or placed near to the pipes for containing or
conveying steam) may be applied to the effecting and regulating the admission
of steam. But my Invention consists in the application of these forces or
powers to effect and regulate such admission. The methods by which the
force and power aforesaid can be applied to the purpose above specified are
various. Those which I have described are what I generally adopt, and will
readily suggest other methods of applying the aforesaid force and power to the
purpose above specified. And the said Paper of Drawings hereunto annexed is
signed by me as relative hereto.
In witness whereof, I, the said Henry Creighton, have hereunto set my
hand and seal, at Glasgow, this Eleventh day of September, in the year
of our Lord One thousand eight hundred and eighteen.
Eidingtoun Smeeton Hutton, Civil Engineer, maketh oath and sayeth, that
he did see Henry Creighton, named and described in the Deed Poll hereunto
annexed, sign, seal, & deliver the same, as his act and deed, in presence of
this Deponent, and of William Buchan, Clerk; that the signature "Henry
Creighton," appearing to the said Deed Poll as the subscribing party thereto, is
of the handwriting of the said Henry Creighton; and that the signatures
Eidingtoun Smeeton Hutton and William Buchan, appearing as the Witnesses