CERTAIN IMPROVEMENTS APPLICABLE TO LOCOMOTIVE AND OTHER STEAM ENGINES
Year: 1840

page_text: TURNER'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I EDWIN
TURNER, of Leeds, in the County of York, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Letters Patent, under the Great Seal of Great Britain, bearing date
at Westminster, the Seventh day of July, One thousand eight hundred and
forty, in the fourth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Edward Turner, her especial licence,
full power, sole privilege and authority, that I, the said Edwin Turner, my
executors, admistrators, and assigns, and such others as I, the said Edwin
Turner, my executors, administrators, and assigns, should at any time agree
with, and no other, 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 and Wales and the Town of Berwick-upon-Tweed, my
Invention
of "CERTAIN IMPROVEMENTS APPLICABLE TO LOCOMOTIVE AND OTHER STEAM ENGINES;"
in which said Letters Patent is contained a proviso that I, the said Edwin
Turner, shall cause a particular description of the nature of my said Invention,
and in what manner the same is to be performed, 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.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Edwin Turner, do hereby declare that the nature of the said Invention,

page_text: and the manner in which the same is to be performed, is particularly described
and ascertained in and by the Drawings hereto annexed, and the following
explanation thereof (that is to say) :-
My Improvements applicable to Locomotive and other Steam Engines consist
in a peculiar mode of constructing a part of the boiler or steam generator,
and its feeding apparatus, which is designed in order that the water for
supplying the boiler may be forced through certain tubes situate at the bottom
of the furnace (constituting hollow fire bars), and which by that means will
become considerably heated before it enters the boiler, thereby greatly
economizing the expenditure of fuel, and cause the steam to be generated with
increased facility.
In the accompanying Drawing, Fig. 1 represents a longitudinal elevation of
a locomotive engine, shewing the arrangement of the tubes for conducting the
water from the tank of the tender to the boiler, with the pumps for forcing it,
and the cock and valve through which it passes, the hollow fire bars being
shewn in section.
Fig. 2 is a horizontal view of the same, exhibiting the transverse arrange-
ment of the tubes and of all the hollow fire bars under the furnace, which
last-mentioned are shewn in section. The two longitudinal tubes a, a,
conduct the cold water from the tender, through which tubes the water is
drawn by the pumps b, b, in the usual manner, and these pumps also force the
water so drawn through the contorted tubes c, and their several valves or
cocks, into the transverse tube d, which forms one end of the fire grate. This
transverse tube d is a main tube, to which all the longitudinal tubular fire bars
e, e, e, are connected, with their reverse ends open into another transverse
tube f, forming together the entire grating or bottom of the furnace. The
water injected by the contorted tubes c, c, is thus made to flow through all the
fire bars or tubes d, e, and f, and becoming heated in its progress by the
contiguity of the furnace, passes into the branch tubes g, g, and thence through
the cock h, into the boiler i, i, in nearly a boiling state. The manner of
constructing the tubular grating will be sufficiently understood by inspecting
the Drawings, the longitudinal fire bars e, e, e, being inserted into the
transverse tubes d and f. At the end of each hollow fire bar there is a plug k
screwed into the transverse tube d, which may be removed when required for
the purpose of cleaning out the tubes, and at the ends of the transverse tube f
there are similar screw plugs l, l, for the same purpose. In the event of the
fire bars being at any time out of order, the passage of the water through
them may be cut off by shutting the cock h in the branch tubes, and also
closing the cocks m, m, in the conducting pipes c, c. When this is done the