IMPROVEMENTS IN SMOKE CONSUMING FURNACES
Year: 1875

page_text: LETTERS PATENT to Robert Morgan, of Birmingham, in the County
of Warwick, Engineer, for the Invention of "IMPROVEMENTS IN
SMOKE CONSUMING FURNACES."
. T
Sealed the 24th March 1876, and dated the 18th December 1875.
PROVISIONAL SPECIFICATION left by the said Robert Morgan at the
737
Office of the Commissioners of Patents, with his Petition, on the
18th December 1875.
I, ROBERT MORGAN,, of Birmingham, in the County of Warwick,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SMOKE CONSUMING FURNACES," to be as follows, that is
to say
"
This Invention refers to an arrangement of moveable fire-bars for
furnaces by which the bed of the fire is kept disturbed so as not to form
clinkers, whilst it is also kept moving onward and allowing the
admission of fresh fuel, the smoke from which is thus caused to pass
over the old fire, by which it is consumed. This I effect by connecting
one end of each alternate fire-bar to a cranked axle, caused to revolve
:

page_text: slowly by any suitable power, and the revolution of which imparts to
the fire-bars a coincident motion consisting of a rise and fall simul-
taneous with a forward and backward movement.
slowly by any suitable power, and the revolution of which imparts to
the fire-bars a coincident motion consisting of a rise and fall simul-
taneous with a forward and backward movement.
The bars are formed with hollows or indentations in their sides,
slowly by any suitable power, and the revolution of which imparts to
the fire-bars a coincident motion consisting of a rise and fall simul-
taneous with a forward and backward movement.
The bars are formed with hollows or indentations in their sides,
allowing ashes to fall through and ensuring also the admission of air a
and keeping the bars cool..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert Morgan in the Great Seal Patent Office on
the 17th June 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT 1
MORGAN, of Birmingham, in the County of Warwick, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of December, in the year
of our Lord One thousand eight hundred and seventy-five, in the 1
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Robert Morgan, Her special
license, that I, the said Robert Morgan, my executors, administrators,
and assigns, or such others as I, the said Robert Morgan, 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, 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 SMOKE CONSUMING FURNACES," upon the condition (amongst others) 2
that I, the said Robert Morgan, 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 :
calender months next and immediately after the date of the said Letters
Patent.
24

page_text: to be performed, to be particularly described and ascertained in and
by the following statement, that is to say :-
This Invention refers to an arrangement of moveable fire-bars for
furnaces, by which the bed of the fire is kept disturbed so as not to form
clinkers, whilst it is also kept moving onward, allowing the admission
of fresh fuel from the hopper, and the smoke caused by such fresh fuel
passes over the old fire, by which it is consumed.
The object of my Invention will be more readily understood by
referring to the accompanying Drawings, reference being had to the
letters and figures marked thereon.
Figure 1, which is for the sake of illustrating the Invention, a front
elevation of a boiler furnace fitted with my improved moveable fire-bars,
the Invention being equally applicable to other descriptions of furnaces.
Figure 2 is a part longitudinal section of the same; and Figure 3 is a
plan and side elevation of the bars and modifications thereof.
I connect one end of each alternate fire-bar (a) to a cranked axle or
eccentric shaft (6), which is caused to revolve slowly by means of cross
gear, toothed and worm pinions (c, d, e,) Figure 1, driven from a main
shaft or by some other suitable arrangement, and the revolution of the
cranked axle or eccentric shaft (6) imparts to the moveable fire-bars (a)
a coincident motion consisting of a rise and fall simultaneously with a
forward and backward movement, the other fire-bars (f) being fixed
and stationary. The movement of the bars (a) feeds onward the fuel
from the hopper (g), and the ashes fall over the end (h) of the bars
ready for removal by opening the door (i) by means of the rod and
handle (¹).
The moveable bars (a) are formed with hollows or indentations (k)
in their sides, as in the plan, Figure 3, allowing ashes to fall through
and also ensuring the admission of air to the fire, and keeping the fire-
bars cool.
(1), Figure 3, is a plan, and (A) a side elevation of a moveable
bar shewing the hollows or indentations alternately on either side of the
bar; (m) shews in side view the bar adapted for the arrangement in
the plan, Figure 3; and (n) is a side elevation of one of the fixed
bars (f). (o) is the door of the furnace which I arrange so as to have
a slow up-and-down movement by means of a rising vertical lever (p)

page_text: operated by a cam disc from the pinion shaft (r), and connected to the
lever (p) is a cross-jointed arm (s) having a slot and stud connected to
axes (t) and arms (v), so that as the lever (p) is raised or lowered, the
door of the furnace will be similarly raised or lowered, and will thus
prevent the fuel from bridging or clogging in the hopper; to facilitate
which I serrate the bottom edge of the door, or I form teeth thereupon,
and the atmospheric air is likewise prevented from entering at the
door (o) by the arrangements described.
The feeding to the fire from the hopper (9) and the passing onwards
of the fuel to the bars is automatic, and the fire will require no 3
cleaning.
Having thus described the object and nature of my said Invention
and the manner in which the same is to be carried into effect, I claim,
without limiting myself to the precise details herein described, the
arrangement of the moveable fire-bars (a) placed alternately with the
fixed bars (f) for keeping the fuel disturbed, and having a rise and fall
together with a backward and forward movement by means of the
attachement of the moveable fire-bars (a) to the cranked axle or eccentric
shaft (6) operated by suitable mechanical means, by which arrangement
the automatic feed or supply of fuel is ensured. And I also claim the 2
arrangement of the door (o) of the furnace for obtaining a slow up-and-
down movement of the same by the lever (p) and its attendant parts
as herein more fully set forth and specified.
In witness whereof, I, the said Robert Morgan, have hereunto set
my hand and seal, this Fifteenth day of June, in the year of our
Lord One thousand eight hundred and seventy-six.