MENTS IN THE MANUFACTURE OF BOILER PLATES, ALSO APPLICABLE GENERALLY FOR THE RESISTANCE OF STEAM OR INTERNAL PRESSURE, AND IN THE APPARATUS OR MACHINERY EMPLOYED THEREIN
Year: 1860

page_text: Street, Deptford, in the County of Kent, for the Invention of "IMPROVE
MENTS IN THE MANUFACTURE OF BOILER PLATES, ALSO APPLICABLE GENERALLY
FOR THE RESISTANCE OF STEAM OR INTERNAL PRESSURE, AND IN THE APPARATUS
OR MACHINERY EMPLOYED THEREIN."
Sealed the 25th January 1861, and dated the 17th October 1860.
PROVISIONAL SPECIFICATION
left by the said William Ramsell at the
Office of the Commissioners of Patents, with his Petition. on the 17th
October 1860.
I, WILLIAM RAMSELL, Boiler Maker, of No. 218. Evelyn Street. Deptford,
in the County of Kent, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MANUFACTURE OF BOILER PLATES. ALSO APPLICABLE
GENERALLY FOR THE RESISTANCE OF STEAM OR INTERNAL PRESSURE, AND IN THE
APPARATUS OR MACHINERY EMPLOYED THEREIN," to be as follows:-
The boiler plates possessing radius, curvations, or corrugations to be rolled,
pressed, or stamped by steam, hydraulic, or other power into the form required,
leaving a flat surface all round the said plates for rivetting them together, and
[Price 8d.]

page_text: which curvatures will materially augment the strength of the said boiler
plates. Boilers constructed of plates made in accordance with this Invention
may dispense with all stays from the sides of the furnaces or fire-places. The
present system of staying boilers will by this application be diminished two-
thirds at least the heating surface of the boilers in the furnaces and flues
will be increased one-third over the present system, the boilers will be con-
siderably lighter & stronger, and, from the absence of stays, the boilers
constructed on this principle will be easily accessible for cleaning.
rollers or presses are made with radius, curvilinear, ridged, recessed, or dished
surfaces, with convexitics and concavities for the manufacture of the said
boiler plates.
The
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Ramsell in the Great Seal Patent Office on the 17th
April 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
RAMSELL, Boiler Maker, of No. 218, Evelyn Street. Deptford, in the County
of Kent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of October, in the year of our
Lord One thousand eight hundred and sixty, in the twenty-fourth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Ramsell, Her special licence that 1, the said William
Ramsell, my executors, administrators, and assigns, or such others as I. the
said William Ramsell, my 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,
nsc, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF BOILER PLATES, ALSO APPLICABLE GENERALLY FOR
THE RESISTANCE OF STEAM OR INTERNAL PRESSURE. AND IN THE APPARATUS OR
MACHINERY EMPLOYED THEREIN, upon the condition (amongst others) that I,
the said William Ramsell, my executors or administrators. by an instrument
in writing under my, or their, or one of their hands and seals. should par-
ticularly 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

page_text: in the Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Ramsell do hereby declare
the nature of my said Invention. and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed, that
is to say:
My Invention consists in forming boiler and other plates with dished or
recessed corrugations and indentations protruding on one or both sides of the
line of the plates. having a flange or flat surface all round or on every side to
allow of their being rivetted. In constructing boilers with these plates I am
enabled to dispense with stays from the sides of the furnace, and I obtain an
increased heating surface beyond that which would be afforded by flat even
plates. The plates are made by rolling or stamping; in apparatus hereafter
described, according to the shape of the corrugations or indentations to be
produced.
Figure of the accompanying Drawings is a plan. and Figure 2 a longi-
tudinal section. through the line, y, of the same Figure. of a boiler plate
made with corrugations on each surface, as shown. or. in other words. in
which the corrugations protrude on each side beyond the line of the plate.
a. a. are the corrugations: b, b, are the flat edges by which one plate is
rivetted to another.
Figure 3 is a side elevation, and Figure 4 an end view. of a pair of rolls by
which the plate before described is produced. c. d. are the grooved rolls
between which the plates to be corrugated are passed. By altering the shape
of the rolls. corrugations of a greater or less depth and width than those shown
can, with equal facility, be produced.
Figure 5 is a plan. and Figure 6 is a section through the line . . of
Figure 5, of a boiler plate formed with indentations. on which the 'indentations
are made to protrude on one side only.
Figure is a sectional view of a bed plate and stamping apparatus by which
these indentations are produced. c is the bed upon which the plate of metal
is placed, are tools or dies fitted into a frame g. where they are held by
nuts. These dies are made to correspond with depressions formed or
spaces left in the bed e. as shewn. h, h, are guides passing through the
frame g. by which the latter is guided. On motion being communicated to
the frame git descends with the dies on to the sheet of metal placed on the
bed e, and stamps indentations similar to those shewn in Figures 5 and 6.

page_text: Figures 8, 9, 10, and 11 are views of other forms of dies 1 sometimes employ
to make different forms of indentations. Any of these dies can be fitted into
the frame g, and there held by nuts, or otherwise.
Figures 12, 13, 14, and 15 are views of dies or tools for producing long
grooves on the surface by stamping or pressure in the manner before
described.
Figure 16 is a view of another form of die for producing indentations.
i is the matrix, and is the dic, guided by guides 1, 1; m is a hole for the
escape of air when the stamping takes place.
Figure 17 is a section of another apparatus for stamping boiler plates.
e is the bed f. f, are the tools or dies fitted in the frame g; k is a piston
rod connected to the frame and to the piston 1. working in the cylinder m.
The frame is free to move on guides h, h. As steam or other power is
admitted to and escapes from the cylinder m. so the piston rises and falls, and
with it the frame and dies, thereby pressing the metal laid on the bed into
whatever forms the dies may be set to produce.
Figures 18 and 19, Figures 20, 21, and 22, Figures 23, 24, and 25, and
Figure 26 are views, in plan and section respectively, of various other forms
of plates made by stamping or rolling in the manner before described.
Figure 27 is a side elevation, and Figure 28 an end view, of a pair of rolls
for rolling plates, in which the corrugations are produced in a longitudinal
direction on both sides of the plates. A plate of metal is inserted at A. The
rolls are caused to make one revolution, which corrugates the plate longi-
tudinally, leaving an even surface all round for rivetting, as before described.
To produce longitudinal corrugations in the manner. just described, with a flat
surface in the centre as well as at the sides and ends, the rolls make two revolu-
tions instead of one.
Figures 29 and 30 are end views of two pairs of rolls for corrugating plates
longitudinally on one side only. The length of the plates corrugated is regu-
lated by the circumference of the rolls.
It will be readily understood that any portion of a plate may be left plain.
by removing as many of the dies as may be required, and also that, according
to the shape of the plate, long or short dies may be used.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I do not limit myself to the
precise' forms of the corrugations or indentations shown, or to the exact method
of producing the same; but what I claim is,--
First, forming plates for boilers and other purposes with corrugations and

page_text: indentations, having a flange or flat surface all round or on every side, sub-
stantially in manner and for the purposes herein-before described and illustrated
in the accompanying Drawings.
Second, the employment of apparatus or machinery for producing corruga-
tions and indentations in plates constructed substantially in manner herein-
before described and illustrated in the accompanying Drawings.
In witness whereof. I. the said William Ramsell, have hereunto set my
hand and seal, this Thirteenth day of April. One thousand eight hundred
and sixty-one.
WILLIAM RAMSELL. (L.S.)