IMPROVEMENTS IN THE CONSTRUCTION OF STEAM BOILERS, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO THE CONSTRUCTION OF OTHER VESSELS OF A LIKE CHARACTER
Year: 1866

page_text: LETTERS PATENT to Richard Cherry, Engineer, Edwin Crossley and
William Bower, Boiler Makers, all of Halifax, in the County of York,
for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF STEAM
BOILERS, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO THE CONSTRUCTION OF
OTHER VESSELS OF A LIKE CHARACTER."
Sealed the 13th July 1866, and dated the 16th January 1866.
PROVISIONAL SPECIFICATION left by the said Richard Cherry, Edwin
Crossley, and William Bower at the Office of the Commissioners of
Patents, with their Petition, on the 16th January 1866.
We, RICHARD CHERRY, Engineer, EDWIN CROSSLEY and WILLIAM
BOWER, Boiler Makers, all of Halifax, in the County of York, do hereby
declare the nature of our said Invention for ".IMPROVEMENTS IN THE CON-
STRUCTION OF STEAM BOILERS, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO THE
CONSTRUCTION OF OTHER VESSELS OF A LIKE CHARACTER," to be as follows:-
This Invention has for its object the construction of steam boilers in
such manner that the seams or joints of the plates (vertically or hori-
zontally) are not continuous in the same line or plane. In constructing
steam boilers according to our Invention one angle or corner of each plate
is "rounded off" or made semicircular, the other angle or corner: of such
plate (diagonally opposite) is formed to the arc of a circle; the plates are

page_text: secured by the ordinary method of rivetting in the following order :-A
plate with its corner or angle rounded off will be secured to a second plate,
the arc of the second plate covering (or being under) the rounded corner
of the first-mentioned plate with the usual "lap;" this arrangement being
repeated to the completion of the boiler. It will be seen that the longi-
tudinal seams of the various plates will form a series of short seams or lines
one above the other, the vertical seams varying in the same degree, the
variation from an horizontal or vertical line being determined by the degree
of rotundity and radius of the arc cut from each plate.
Boilers constructed as above described obviate the objection of con-
tinuous seams longitudinally or vertically, thereby breaking and distributing
the action or pressure of the steam on the seams or joints, such seams or
joints being in no case longer in the same plane than the width or length
of a single plate, thereby reducing the weaker parts of a boiler so con-
structed to a minimum. Although we describe the plates with one corner
formed to a semicircle and the corner diagonally opposite forming an arc
of a circle, it is evident that boilers may be constructed possessing the
advantages herein set forth by cutting away the angle of or cutting out a
rectangular or square piece from such plate, but we prefer the form of
plate first herein mentioned.
The construction and arrangement of plates herein described is equally
applicable for other vessels or receptacles for compressed air, gases, or
liquids, and in the construction of the shell or hull of iron ships.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Cherry, Edwin Crossley, and William
Bower in the Great Seal Patent Office on the 14th July 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RICHARD
CHERRY, Engineer, EDWIN CROSSLEY and WILLIAM BOWER, Boiler Makers,
all of Halifax, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of January, in the year of our Lord
One thousand eight hundred and sixty-six, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said Richard Cherry, Edwin Crossley, and William Bower, Her
special licence that, we, the said Richard Cherry, Edwin Crossley, and
William Bower, our executors, ádministrators, and assigns, or such others

page_text: as we, the said Richard Cherry, Edwin Crossley, and William Bower, our.
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, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel.
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE CONSTRUC..
TION OF STEAM BOILERS, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO THE
CONSTRUCTION OF OTHER VESSELS OF A LIKE CHARACTER," upon the condition.
(amongst others) that we, the said Richard Cherry, Edwin Crossley, and
William Bower, our executors or administrators, by an instrument in
writing under our, or their, or one of their hands and seals, should parti-
cularly 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Richard Cherry, Edwin Crossley, and
William Bower, do hereby declare the nature of our 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 has for its object the construction of steam boilers in
such manner that the seams or joints of the plates (vertically or hori-
zontally) are not continuous in the same line or plane. In constructing
steam boilers according to our Invention one angle or corner of each plate
is "rounded off" or made semicircular, the other angle or corner of such
plate (diagonally opposite) is formed to the arc of a circle; the plates are
secured by the ordinary method of revetting in the following order :-A
plate with its corner or angle rounded off will be secured to a second plate,
the arc of the second plate covering or being under the rounded corner of
the first-mentioned plate with the usual "lap ;" this arrangement being
repeated to the completion of the boiler. It will be seen that the longi-
tudinal seams of the various plates will form a series of short seams or lines
one above another, the vertical seams varying in the same degree; the
variation from an horizontal or vertical line being determined by the degree
of rotundity and radius of the arc cut from each plate.
Boilers constructed as above described obviate the objection of con-
tinuous seams longitudinally or vertically, thereby breaking and distributing
the action or pressure of the steam on the seams or joints, such seams or
joints being in no case longer in the same plane than the width or length
of a single 'plate, thereby reducing the weaker parts of a boiler so con-

page_text: structed to a minimum. Although we describe the plates with one corner
formed to a semicircle and the corner diagonally opposite forming an arc
of a circle, it is evident that boilers may be constructed' possessing the
advantages: herein set forth by cutting away the angle of or cutting out a
rectangular or square piece from such plates, but we prefer the form of
plate first herein mentioned.
The construction and arrangement of plates herein described is equally
applicable for other vessels or receptacles for compressed air, gases; or
liquids, and in the construction of the shell or hull of iron ships.
.
Such being the nature and object of our said Invention, we will now
proceed to describe more in detail the manner in which the same is to be
or may be performed or carried into practical effect, and in order that the
same may be 'distinctly understood we have hereunto annexed a Sheet of
Drawings illustrative thereof, and have marked the same with figures and
letters of reference, the same letter referring to the same part in the various
views or Figures.
Fig. 1 is a side elevation of a steam boiler constructed according to our
Invention, and Fig. 2 is a plan view of the same; Fig. 3 is an enlarged
view shewing method of arranging plates (in the construction of other
vessels of a like character, and in the construction of the shell or hull of
iron ships) with corners or angles cut off; at Fig. 5 is shewn an arrange-
ment of plates with a square or rectangular piece cut from one corner, or
the corners may overlap as shewn by dotted lines.
.At A is shewn a boiler plate with its corner or angle at B rounded off
or made semicircular, the other angle or corner B¹ of such plate (diagonally
opposite) is formed to the arc of a circle. The plate A with its corner or
angle rounded off, as shewn at B, is secured by revets to the plate C; the
arc C¹ being covered by the rounded part of plate A with the usual "lap;"
this arrangement being continued to the completion of the boiler: It will
be seen that the longitudinal seams of the various plates form a series of
short seams or lines one above another, the vertical seams varying in the
same degree, the variation from an horizontal or vertical line being deter-
mined by the degree of rotundity and radius of the arc cut from each
plate. In the Drawings we have shewn the angle or corner of each plate
rounded off and the angle or corner diagonally opposite formed to the arc
of a circle extending to near one-third the width of each plate, this degree
we prefer. In constructing a steam boiler with three plates in its circum-
ference we employ a plate E one-third and a plate F two-thirds the width
of the plates A and C, so as to "break" or cross the seams or joints of the

page_text: plates in commencing to construct a boiler. The opposite end of the.
boiler will finish or be completed by the use of two plates of similar pro-
portions and one plate of the size of the plate A. The form and arrange-
ment of the plates above described and illustrated in the accompanying
Drawings is the same when applied to the construction of other vessels or
receptacles for compressed air, gases, or liquids, and in the construction of
the shell or hull of iron ships.
Having thus fully described and ascertained the nature and particulars
of this our said Invention for "Improvements in the Construction of Steam
Boilers, which Improvements are also applicable to the Construction of
other Vessels of a like Character," together with the manner in which the
same is to be or may be performed or carried into practical effect, we
would remark in conclusion that we claim as our Invention the construc-
tion of steam boilers and other vessels of a like character as above parti-
cularly described and illustrated in the accompanying Drawings, or any
mere modification of the same.
In witness whereof, I, the said Richard Cherry, have hereunto set
my hand and seal, for and on behalf of myself and the said Edwin
Crossley and William Bower, this Thirteenth day of July, in the
year of our Lord One thousand eight hundred and sixty-six.
Witness,
WALTER BRIERLEY,
Patent Agent,
Halifax and Blackburn.
RICHARD CHERRY. (L.s.)