IMPROVEMENTS IN PORTABLE ENGINES
Year: 1874

page_text: LETTERS PATENT to Nathaniel Clayton and Joseph Shuttleworth, both
of Lincoln, in the County of Lincoln, Engineers, for the Invention of
"IMPROVEMENTS IN PORTABLE ENGINES."
:
Scaled the 25th September 1874, and dated the 1st April 1874.
PROVISIONAL SPECIFICATION left by the said Nathaniel Clayton and
Joseph Shuttleworth at the Office of the Commissioners of Patents,
with their Petition, on the 1st April 1874.
WC, NATHANIEL CLAYTON and JOSEPH SHUTTLEWORTH, both of
Lincoln, in the County of Lincoln, Engineers, do hereby declare the
nature of our said Invention for "IMPROVEMENTS IN PORTABLE ENGINES,".
to be as follows:-
This Invention relates to improvements in the mode of securing the.
road wheel axles to the boilers of portable engines, and consists in the
adoption of circular discs of wrought, cast, or malleable cast iron.
secured by bolts or otherwise, one on each side of the boiler shell con-
taining the fire-box of portable engines, and each formed witļi a tapered.

page_text: hole through its central portion (diminishing from the inner face of the
disc or shell of the boiler) into which and projecting through the outer
face of the same the axle formed with a corresponding taper at its inner
end is fitted and secured by studs screwed from the inner face of the
disc into corresponding holes tapped diametrically half into the discs and
half into the axles; or by any other system of keys, screws, rivets, or
pins that
may be found most effective.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Nathaniel Clayton and Joseph Shuttleworth in tho
Great Seal Patent Office on the 20th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, NATHANIEL
CLAYTON and JOSEPH SHUTTLEWORTH, both of Lincoln, in the County of
Lincoln, Engineers, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of April, in the year of
our Lord One thousand cight hundred and seventy-four, in the 37th
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Nathaniel. Clayton and Joseph Shuttle
worth, Her special license that we, the said Nathaniel Clayton
and Joseph Shuttleworth, our executors, administrators, and assigns, or
such others as we, the said Nathaniel Clayton and Joseph Shuttle-
worth, our exccutors, administrators, or assigns, should at any time
agree with, and no others, from time to time and 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 "Im-
PROVEMENTS IN PORTABLE ENGINES," upon the condition (amongst others)
that we, the said Nathaniel Clayton and Joseph Shuttleworth, our
executors or administrators, by an instrument in writing under our hands
and seals, or under the hand and seal of one of us, should particularly
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
immediately after the date of the said Letters Patent.

page_text: L
NOW KNOW YE, that we, the said Nathaniel Clayton and Joseph
Shuttleworth, 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, reference being had to
the accompanying Drawings and to the letters and figures markod
thereon, that is to say :-
1
This Invention relates to improvements in the mode of securing the
road wheel axles to the boilers of portable engines, and consists in the
adoption of circular discs of wrought, cast, or malleable cast iron
secured by bolts or otherwise, one on cach side of the boiler shell con-
taining the fire-box of portable engines, and each formed with a tapered
hole through its central portion (diminishing from the inner face of the
disc or shell of the boiler) into which and projecting through the outer
face of the same the axle formed with a corresponding taper at its inner
end is fitted and secured by studs screwed from the inner face of the
disc into corresponding holes tapped diametrically, half into the discs and
half into the axles; or by any other system of keys, screws, rivets, or
pins that may be found most effective.
And in order that our said Invention may be fully understood we shall
now proceed more particularly to describe the same, and for that purpose
shall refer to the several Figures on the annexed Sheet of Drawings
the same letters of reference indicating corresponding parts in all the
Figures.
Figure 1 is a side sectional elevation of our improved mode of securing
the road wheel axles of portable engines, and Figure 2 a front end cleva-
tion of the same.
}
A represents a circular flanged or other suitably shaped disc made of
wrought, cast, malleable cast iron, or other metal, and secured by bolts a,
as shown; or by screws, rivets, or otherwise, to the outside of the shell
or plating B of the boiler (one on each side of the fire-box) of a portable
engine. Each disc A is formed with a central tapered hole, tapering
from its largest end at the inner face of the said disc (or that face
immediately against or in contact with the said shell or plating B) to
its smallest end at the outer face of the disc A. Into this central
tapered hole the inner end of the road wheel axle C formed with a cor-
responding taper is fitted and secured by screwed studs or keys D, D,
which are screwed from the inner face of the disc A into corresponding

page_text: holes tapped diametrically half into the inner or tapered end of the axle
C and half into the disc A, as shewn; or the axle C may be secured
within the disc A by any other suitable system of keys, or screws,
rivets, or pins, that may be found most effectual.
Having now described and particularly ascertained the nature of our
said Invention, and the manner in which the same is or may be used
or carried into effect, we would observe in conclusion, that what we
consider to be novel and original, and therefore claim as the Invention
secured to us by the herein-before in part recited Letters Patent is,
carrying the road wheel axles of portable engines by discs secured to the
sides of the boilers, substantially as horein-before described and illus.
trated by our Drawings.
In witness whereof, we, the said Nathaniel Clayton and Joseph
Shuttleworth, have, to this our Specification set our hands and
seals, the Twenty-second day of September, One thousand eight
hundred and seventy-four..