IMPROVEMENTS IN BOILERS FOR GENERATING STEAM
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BENJAMIN
GOODFELLOW, of Hyde, in the County of Chester, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Eleventh day of March,
One thousand eight hundred and fifty-two, in the fifteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Benjamin Goodfellow, my exors, adiñiors, and assigns, Her especial licence,
full power, sole privilege and authority, that I, the said Benjamin Goodfellow,
my exors, adñiors, and assigns, or such others as I, the said Benjamin Good-
fellow, my exors, adññiors, and assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, my Invention of
"IMPROVEMENTS IN BOILERS FOR GENERATING STEAM;" in which said Letters
Patent is contained a proviso that I, the said Benjamin Goodfellow, shall
cause a particular description of the nature of my Invention, and in what
manner the same is to be performed, by an instrument in writing under my
hand and seal, to be enrolled in Her Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said in
part recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I,.the said
Benjamin Goodfellow, do hereby declare the nature of my Invention to con-
sist in the application to multitubular boilers of bent or curved tubes, through
which the products of combustion pass and give out their heat to the water
in the boiler. Such tubes, when combined to the plates of the boiler are less
liable to work themselves loose or to injure the plates into which they are
fixed, as any irregularity in the expansion and contraction between the tubes
and the plates produces only a slight alteration in the bend of the tube, and
not an injurious strain between the tubes and the plates into which they
are fixed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents a longitudinal section through one of my improved
boilers; and Figure 2 is a transverse section of the same. In these views,
A is the outer portion of a cylindrical boiler having hemispherical ends. I
prefer boilers of this shape as they are the strongest, but my improvements
may be applied to boilers of other shapes. B is the fire-place; and C, C, are
two blocks of brickwork on which the boiler is supported; D, D, are a series
of bent tubes through which the heat and other products of combustion pass
from the fire into the chamber F situated between the two blocks of brick-
work C, C, at each end, and a wall at each side. The upper row of the
series of tubes D is in part straight, and joins the flue directly above the firing
door E; by means of this arrangement the heat from the fire-place is more
uniformly distributed in the water of the boiler. It will be seen, on referring
to Figure 2, that the tubes are not only bent into semi-circles, but that the
ends are also bent so that they may enter the boiler plate at right angles, or
nearly so, for the purpose of facilitating the operation of securing the ends of
the tubes into the boiler plate, the bottom and end plates of which are made
thicker than the other portions to compensate for the holes into which the
tubes are fixed. The products of combustion pass from the chamber F into
the chamber H, through the series of tubes G, which correspond to those last
described, and thence to the chimney through the opening I. The method of
securing the tubes into the boiler plates does not require to be particularly
described, as it may be done by ferules, or by expanding the ends of the tubes
in the ordinary manner. When it is necessary to clean the tubes out, the
attendant enters in succession the chambers F and H, and passes and repasses
a bent wire through each tube so as to clean it. The combustion of the
smoke and gases may be very much increased by admitting air into the
chamber F. In Figures 3 and 4 I have shewn another boiler with bent

page_text: tubes; this arrangement of tubes is chiefly applicable to boilers of smaller
dimensions than the one above described. In these Figures A is the outer
portion of the boiler; B, the fire-place; and C, a block of brickwork on which
the boiler is supported at its centre. The bent tubes K are so arranged that
the products of combustion pass at once from the fire-place to the chamber L,
which is in communication with the chimney through the opening M. Another
modification of my Invention is represented in Figures 5 and 6. In these views
A, B, and C, indicate similar parts to those above referred to.. N, in Figure 6,
represents a block of brickwork extending from C to the end of the boiler
near the chimney; the bent tubes are arranged in two series 0 and P, and the
products of combustion are conducted from the fire-place B through the open-
ing Q, seen in Figure 6, along the left-hand side of the boiler, from whence
they make their escape to the right-hand side through the tubes O and P,
and they afterwards pass into the chimney through the opening R seen in
Figure 5. In Figures 7 and 8 I have shewn another combination of parts
forming my improved boiler, somewhat similar to the preceding; in these
views the parts A, B, C, N, and Q, correspond to the parts marked with the
same letters in Figures 5 and 6. The tubes S are arranged in a continuous
series, and the holes in the boiler plates form a spiral or diagonal line; this is
done with the view of distributing the heat more equally through the water to
be evaporated, and to prevent the boiler plates being as much weakened as
they would be if the holes into which the tubes are fixed were all in a straight
line. In Figures 9 and 10 another modification of my Invention is shewn.
This boiler is very similar to the two last described, but the tubes T are
arranged in alternate directions; by this disposition of the tubes the boiler
plates are not so much weakened as when the tubes are all placed in the same
direction.
Having now described the nature of my Invention, and the manner in
which the same is carried into effect, I declare that I do not confine myself
to the shapes of the tubes and plates, nor to the arrangement in which I have
shewn them in combination; but what I do claim is, the combination of such
bent tubes with plates to form a boiler, as I have shewn and described.
In witness whereof, I, the said Benjamin Goodfellow, have hereunto
set my hand and seal, this Seventh day of September, One thousand
eight hundred and fifty-two.
B. (L.S.) GOODFELLOW.

page_text: AND BE IT REMEMBERED, that on the Seventh day of September, in
the year of our Lord 1852, the aforesaid Benjamin Goodfellow came before our
said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Eighth day of September, in the year of our Lord One
thousand eight hundred and fifty-two.
Enrolled the Eighth day of September, in the year of our Lord One
thousand eight hundred and fifty-two.