An Improved Smoke-consuming Apparatus.
Year: 1889

page_text: Date of Application, 17th Oct., 1889
Complete Specification Left. 22nd May, 1890-Accepted, 12th July, 1890
PROVISIONAL SPECIFICATION.
An Improved Smoke-consuming Apparatus.
WALLACE MCGUFFIN GREAVES 40 Dover Street Manchester Drysalter do hereby
declare the nature of this invention to be as follows:-
The object of my invention is to provide a means whereby the smoke from a boiler
furnace is consumed, or otherwise changed into useful combustible gases, thereby
effecting an economy of the fuel.
For this purpose I form from a variety of refractory substances a semi-cylindrical
block or slab in such a manner that whilst the hind or back end thereof is straight
thus forming a right line or right angle with its length the opposite end is made to
slope from its base upwards, and terminate in a sharp point or tongue the edges being
sharp or feathered thus giving a form to the said block or slab resembling that of a
scoop.
No part of the base of the block or slab except the thickness thereof is solid but
remains open, and is designed to rest securely upon its own ends or edges.
This hollow block or slab I then place on the bridge of the furnace in such a manner
that the scoop or sharp end thereof shall face the heat or fire of the furnace, the
block or slab being so proportioned as to leave a semi-annular space between its
exterior surface and that of the plates of the furnace, whilst the hollow space or
aperture which runs through the interior of the block or slab is of sufficient area to
prevent any crippling or checking of the draught.
Briefly described the action of my apparatus is as follows: Under the action of the
heat of the furnace the block or slab soon becomes incandescent, and as the smoke
and unconsumed gases, strike or pass through it they become burnt or changed into
carbonic oxide and thus tend to increase the economy of the fuel and abate the smoke.
In carrying out my invention I propose to make the said block or slab of known
refractory materials such as fire clay or otherwise of a clay or clayey substances
specially prepared.
L
1000
COMPLETE SPECIFICATION.
An Improved Smoke-consuming Apparatus.
WALLACE MCGUFFIN GREAVES 40 Dover Street, Manchester, Drysalter, 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:
The object of my invention is to provide means whereby the smoke from a boiler
furnace is consumed or otherwise changed into useful combustible gases.
To show clearly how my invention is carried out I furnish drawings in which
corresponding parts are marked by the same letters throughout.
From suitable refractory materials I form semi-cylindrical hollow blocks C which
are hest of the shape shown in Fig. 1. I secure one or more of these blocks to the
bridge B as shown in longitudinal section in Fig. 2. Fig. 3 shows in similar section
two blocks . C. secured to the bridge. Fig. 4 shows in cross section more than one
block C used one covering the other with a space D between each block and between
the uppermost block and boiler plate F. A is furnace door and E is passage to
flue. Fig. 5 shows in longitudinal section the furnace with bridge B & block Cand
also an additional bridge B with block in a chamber beyond the first bridge. The
blocks can be arranged on the additional bridge in the way previously described.

page_text: Under the action of the heat of the furnace the blocks soon become heated to such
a degree that the smoke and unconsumed gases striking or passing through them
become burnt or changed into carbonic-oxide.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:
1. In the manufacture and use of hollow blocks made of some refractory material
for use in boiler furnaces for the purpose of storing up heat and thereby consuming
the smoke as it passes through or near to the blocks substantially as set forth in the
preceding specification.
2. The arrangement of the furnace with the hollow blocks on additional bridge
substantially as shown in Fig. 5 and described in the specification.
Dated this 20th day of M 1900
W. H. MUNNS,
Agent for Applicant.