IMPROVEMENTS IN HEATING APPARATUS FOR LOCOMOTIVE ENGINES
Year: 1869

page_text: LETTERS PATENT to William Robert Lake, of the "International
Patent Office," No. 8, Southampton Buildings, Chancery Lane, in
the County of Middlesex,, Consulting Engineer, for the Invention
of "IMPROVEMENTS IN HEATING APPARATUS FOR LOCOMOTIVE ENGINES."-
A communication from abroad by William Hohbach, of Munich,
Bavaria.
Sealed the 20th August 1869, and dated the 22nd February 1869.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 22nd February 1869.
I, WILLIAM ROBERT LAKE, of the "International Patent Office," No. 8,
5 Southampton Buildings, Chancery Lane, in the County of Middlesex,
Consulting Engineer, do hereby declare the nature of the said Invention

page_text: for "IMPROVEMENTS IN HEATING APPARATUS FOR LOCOMOTIVE ENGINES," a com-
munication, to be as follows:-
This apparatus is fixed below the grate, and has for its purpose to
introduce the coal to be fired from below the grate. The said apparatus
is provided with a vessel fixed to the fire-box which serves as a reservoir
for the coal. This reservoir is filled from the tender through a tube. The
reservoir is closed at its top by a conical cover to prevent the falling in of
the ashes from the grate bars. The ashes fall upon the cover, and from
the cover pass to the ash-pit. In the middle of the vessel is a screw, the
upper half of which is enclosed by a cylindrical mantle of iron. This
mantle is fastened by means of arms to the fire-box. The axis of the
screw turns in journal boxes, the upper one of which rests upon a cross
piece of the cylindrical mantle, and the lower one is fixed to a hoop,
therefore the axis of the screw passes through the vessel. At the lower
end of this axis are two conical wheels. Through two other conical
wheels the screw is turned by any mechanical arrangement on the
tender. By turning the screw the coal is lifted and introduced into the
fire-place from below the grate bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 21st August 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," No. 8, Southampton
Buildings, Chancery Lane, in the County of Middlesex, Consulting
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen. Victoria, by Her
Letters Patent, bearing date the Twenty-second day of February, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Robert Lake, Her
special licence that I, the said William Robert Lake, my executors,
administrators, and assigns, or such others as I, the said William Robert
Lake, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter

page_text: upon the
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 HEATING APPARATUS FOR LOCOMOTIVE ENGINES,"
condition (amongst others) that I, the said William Robert Lake, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, 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.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the 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
Drawing forming a part of this Specification, and which is a vertical
section of the fire-box of a locomotive engine.
The said apparatus is, as shown in the said Drawing, fixed below the
grate, and has for its purpose to introduce the coals to be fired from
below the grate. The said apparatus consists in a vessel G fixed to the
fire-box which serves as a reservoir for the coal. This reservoir is filled
from the tender through the tube R. The reservoir is closed at the top
by a conical cover D to prevent the falling in of the ashes from the
grate bars. The ashes fall upon the cover, and from the cover pass to
the ash-pit. In the middle of the vessel G is a screw S, the upper half
of which is enclosed by a cylindrical mantle of iron. This mantle is
fastened through arms to the fire-box. The axis of the screw S turns in
the journal boxes L, L, the upper one of which rests upon a cross peice
of the cylindrical mantle M, while the lower one is fixed to the hoop B,
the axis of the screw S therefore passes through the vessel G. At the
under end of this axis are two conical wheels K. Through two other
conical wheels P the screw S is turned by any mechanical arrangement
at the tender. By turning the screw S the coals are lifted and introduced
to the fire-place from below the grate bars.
Having now described the said Invention, as communicated to me by
my foreign correspondent, I claim,-
First. The screw S and the vessel G.

page_text: In witness whereof, I, the said William Robert Lake, have hereunto
set my hand and seal, this Twenty-first day of August, in. the
of our Lord One thousand eight hundred and sixty-nine.
year
WILLIAM ROBERT LAKE. (L.S.)