Improved Combined Apparatus for Burning Refuse, such as Town's Refuse, and Generating Steam.
Year: 1893

page_text: Date of Application, 15th Feb., 1893
Complete Specification Left, 15th Nov., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improved Combined Apparatus for Burning Refuse, such as Town's
Refuse, and Generating Steam.
I, JAMES JOHN MILLER, of 35 Dorville Road, Hammersmith, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention has reference to combined apparatus comprising a Jukes furnace
grate or a grate of equivalent kind adapted to cause fuel thereon to travel in the
furnace, a combustion chamber, a steam generator or generators, and forced
draught; the arrangement being such that refuse such as town's refuse may be fed
on to the travelling grate, air under pressure be supplied to the combustion
chamber, and the heat generated by the combustion of the refuse or part thereof be
utilized to generate steam in a generator or generators of any suitable construction
which steam or part thereof according to requirement can be used for maintaining
or helping to maintain the necessary forced draught.
Apparatus to operate on the principle of my invention as above set forth can be
constructed in various forms.
Deted this 15th dox of February 1892
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
עשע UMI
Improved Combined Apparatus for Burning Refuse, such as Town's
Refuse, and Generating Steam.
I, JAMES JOHN MILLER, of 35 Dorville Road, Hammersmith, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
My invention has reference to combined apparatus comprising a Jukes furnace
grate or a grate of equivalent kind adapted to cause fucl thereon to travel in the
furnace, a combustion chamber, a steam generator or generators, and forced
draught; the arrangement being such that refuse such as town's refuse may be fed
on to the travelling grate, air under pressure be supplied to the combustion
chamber, and the heat generated by the combustion of the refuse or part thereof be
utilized to generate steam in a generator or generators of any suitable construction,
which steam, or part thereof according to requirement, can be used for maintaining
or helping to maintain the necessary forced draught.
Apparatus to operate on the principle of my invention as above set forth can be
constructed in various forms.
Referring to the accompanying drawings,
Fig. 1 is a vertical section partly in elevation, of combined apparatus according
to this invention ;
11
S on the line A A Fio 1 and

page_text: 1, 1 are the side and end walls of the furnace enclosing a combustion chamber,
an ash pit and a furnace grate of the kind mentioned. This grate consists of a
number of metal links 2 arranged parallel to each other at a short distance apart,
say about of an inch, so as to form narrow air-ways between them, and hinged or
jointed together by cross pins 3 each of which extends entirely across the grate,
the whole forming an endless multiple chain or band as shown in Fig. 1 that is
specially suitable for burning refuse material of the kind mentioned. The grate is
carried by two pairs of pulleys 4, 4*, each pulley being of square form as seen in
end view, (or of other suitable form) and having its corners recessed to receive the
projecting ends of the cross pins 3 of the links 2. These pulleys 4, 4* are fixed
upon shafts 5, 5" respectively, mounted to rotate in suitable bearings outside the
furnace, the pulleys 4 being arranged at a higher level than the pulleys 4 so that
the upper surface of the grate is downwardly inclined from front to back. The
shaft 5 carrying the lower series of pulleys 4 is provided with a worm wheel 6 by
which it and the pulleys thereon can be slowly rotated in the direction of the
arrow a (Fig. 1) by a worm 6* driven by any suitable means so that a slow
continuous or intermittent downwardly inclined movement will be imparted to
those links that form, for the time being, the grate proper, whereby refuse material
fed on to the grate through the hopper 7 will be caused to slowly travel from the
front to the rear end of the furnace. In the arrangement shown the worm 6* is
intermittently driven by a pawl and ratchet mechanism 6 that is actuated by an
eccentric rod 6° from the crank shaft of the steam engine hereinafter referred to.
Both shafts 5, 5, may be driven if desired.
8, 8 are openings formed in the side walls of the furnace for enabling the grate
to be cleared and clinker to be removed, when necessary. These holes are normally
closed by doors 8. 9 is a platform or stationary hearth on which loose clinker is
delivered by the grate, as the lower end thereof passes around the lower pair of
pulleys 4. 10 is an arched wall or baffle arranged above the inner and central
portions of the grate, so that the flame and hot gases produced at the inner portion
of the grate, where the intensity of combustion is greatest, are caused to pass
forward over the refuse material on the central and front portions of the grate and
thereby effectually burn noxious gases evolved from such material before they can
escape from the combustion chamber 11. 12 is a steam generator of any suitable
type, inserted into the upper portion of the combustion chamber and so arranged
that the hot gases, after passing in a forward direction below the wall or baffle 10
will return in a backward direction over the said wall or baffle and enter the rear
ends of the boiler tubes through which they will flow to the smoke box 13 of the
generator, and thence into the external atmosphere.
For the purpose of admitting air under pressure beneath the firegrate, an
opening 14 is made through the inner side wall 1 of the furnace, whereby the ash-
pit 15 is placed in communication with a closed chamber 16 containing air under
pressure. The pressure in this chamber is maintained by a fan or blower 17
arranged in the said chamber and having its inlet in communication with the
external atmosphere whilst its delivery terminates in the said chamber. In some
cases the fan may deliver air under pressure direct into the ashpit of the furnace.
The air pressure should be varied according to the nature of the refuse material to
be burnt. For light material containing a large portion of combustible matter,
such as straw, paper and the like, the pressure may be equal say to about inch of
water, whilst for refuse material containing a large portion of inert matter the
pressure may be increased, say up to about four or five inches of water.
For town's refuse of ordinary quality, a pressure equal to about inch of water
will usually be found sufficient.
18 is a steam engine that receives its steam supply from the steam generator 12
and serves to drive the above mentioned fan or blower by means of a belt, and also
the travelling grate through the mechanism herein before described.
By my invention, refuse material of the kind mentioned can be effectually and
easily burnt without liability of noxious gases escaping into the external atmosphere,

page_text: and the heat produced by its combustion can be efficiently and profitably utilised
for the generation of steam. Furthermore by using a grate of the kind described
very little of the refuse material treated will fall through it without being burnt,
and any clinker formed upon it will to a large extent be automatically detached
therefrom, and be received by the platform or hearth 9, so that the proper working
of the furnace will require a comparatively small amount of labour.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Combined apparatus for burning refuse such as town's refuse and generating
steam, comprising a Jukes furnace grate, or a grate of equivalent kind, adapted to
cause fuel thereon to travel in the furnace, a combustion chamber, a steam generator
or generators, and forced draught, the arrangement being such that refuse such as
town's refuse can be fed on to the travelling grate, air under pressure be supplied
to the combustion chamber, and the heat generated by the combustion of the
refuse, or part thereof, be utilised to generate steam, substantially as herein
described.
2. For burning refuse such as town refuse and generating steam, the improved
combined apparatus constructed and arranged substantially as described and
shown.
Dated this 15th day of November 1902
W. Lloyd Wise,
JAS. J. MILLER.
46, Lincoln's Inn Fields, London, W.C., Agent for Applicant.