IMPROVE- MENT IN STEAM BOILER AND OTHER FURNACES
Year: 1884

page_text: I RICHARD ARTHUR WILSON Patent Furnace Bar Maker Pendleton Iron Works
Salford Manchester I do hereby declare the nature of my invention for IMPROVE-
MENT IN STEAM BOILER AND OTHER FURNACES to be as follows:—
"My invention consists in improved Furnace Grate & Bridge.
The Grate may consist of stationary frames fitted with moveablo grids the arms
of which are coupled to long rods so that the series of grids in each frame may be
raised as per my Patent April 19th 1877 N° 1516 or the front only and the back
part of frames fitted with revolving discs say 4 or more mounted on transverse
shafts and a ratchet action on each shaft and 4 or more shafts in the length of the
frame & the arms of the ratchets coupled to long rods When the rods on the grids
and those coupled to the ratchets are coupled together and to crank shaft eccentric
lever or revolving shaft at the front of the furnace the grids are made to rise and
fall and the discs to revolve and so clear the furnace of the fine waste and keep it
in good order for combustion of fuel.
The Bridge is built of brick or other material to height of bars say 41/2 inch
past the end of bars on this is placed a plate or tile of suitable width and length
to cover the same also 4 inches of the 41/2 inches past the end of the bars so
leaving a narrow cavity of ½ inch. The bottom edge of the plate or tile is
5/ higher than the bars to allow them freedom to expaud also to allow the fine
waste to fall away from front of Bridge and also for admission of air to the end of
the furnace in front of the Bridge.
Above the plate or tile is built to form the top Bridge tile blocks having
chambers supplied with air through holes in plate or tile near its front edge these
chambers communicate with perforated holes or narrow opening at the back and
near the top of the Bridge so as to kindle any gases that may escape the Furnace.
Date 1.8
L
T. 2004

page_text: I RICHARD ARTHUR WILSON Pendleton Iron Works Manchester I do hereby
declare the nature of my invention for IMPREMENT IN STEAM BOILER AND OTHER
FURNACES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My Invention consists of an Improved Grate Bar and Bridge and is intended to
be used in combination and as an improvement of my Patent Furnaces dated
April 19th 1877 N° 1516.
The same being improvements on the same.
The improvements consist in a series of frames resting on ordinary bearings
in one or two lengths the ends sides bearing ribs and connecting ribs across the
frames are made solid These frames and ribs form one side of each air space The
other side being formed of loose or moveable grids on each grid is cast an arm or
lever in which a pin is cast with an hole bored in the end The pin is for putting
on a long coupling bar to connect the one or two series of grids together from
front to back of the furnace The holes in the end of pins is for split cotters to
prevent rods working of the pins The coupling rods are attached to a second rod
which completes the action by a bell crank lever on the shaft in front of the
furnace and a hand lever cam or crank action from the engine by giving the bell
crank a violent action would move the grids and break up the fuel also clear the
air spaces.
The frames and ribs form one side of each air spaco and may be fitted also with
circular scrated edged discs forming the other side of air space these are supported on
shafts resting on the center longitudinal bearing ribs of the frames. These are made
to revolve by an endless chain passing over chain pulleys or wheels in the center
of each shaft the chain also passing over a chain wheel on the shaft in front of the
furnace which shaft being driven slowly from the engine completes the motion to
the discs creeping round with an imperceptible motion they keep the air spaices
clear of fine waste and so promote the best possible combustion of the fuel The
improved Bridge the botton Bridge may be built as usual only it must be four and
half inches past the end of the bars and so that the Bridge Plate will come within
half an inch of the bars and the bottom edge sit half an inch higher than top of
them this will leave half an inch opening in height and width to keep clear the
end of bars in front of the Bridge and so prevent clinkering in face of Bridge
this Bridge plate to have brackets on the under side to carry bearing bar for
supporting back end of bars also opeinings near the front edge through the plate
to admit air to chambers in fire clay blocks which when built on the Bridge plate
form the top Bridge these chambers are continued to back and top of the Bridge
by suitable back plate having an opening near the top the excessive heat of the
blocks & top Bridge is utilized to supply hot air to mect the unconsumed gases and
cause them to explode into flame and so prevent ajnoke.
The fuel may be fed to the fire grate by my Patent stoker N° 1516 April 19th
1877 or any other equivalent or by hand labour as usual.

page_text: In order that my invention may be fully understood and readily carried into
operation I will proceed to describe the accompanying sheet of Drawings.
Figure 1 A represents the frames or blocks in which the moveable grids work.
A 4 frames without the moveable grids A 5 frame with the loose moveable grid
filled in.
Figure 2 represents the moveable grids in two positions they assume C2 when
raised by connecting rod E1 bell cank E3 on shaft K 4 and by lever E 5 Figure 1
when in their stationary position C3. 3. 3. 3 & 3 also A2 Figure 4 Figure 1
BB represent the frames or blocks in which the revolving discs work and which
are fitted in with the saine, figure 4 B1 represents the revolving discs filled in B 2
when frame is without them.
Figure 3 F1234 & 5 frame with moveable discs on shafts in position and
G1234 & 5 represents chain wheels and endless chain in position and also chain
on chain wheel G 6 Figure 1 & 3 on revolving shaft in front of the furnace
Figure 4 A 1 frame in which the moveable grids work Figure 4 A 2 frame with
moveable grids fitted in B1 with revolving discs fitted in B 2 without the discs B3
covering plate for chain wheel and endless chain B 5 chain wheel in position on center
of shaft Figure 5 J 5-6 & 7 represents front view of Bridge Plate and brackets for
carrying back bearer on which the bars rest J1 & 3 Figure 2 shows Bridge and
back plates on which the fire clay blocks are built for top Bridge 14 & 5 is front
view of blocks 16 & 7 Figure 213 represents the chambers in the blocks when
they are built together and form top Bridge the chambers heating the air passing
from under side of Bridge Plato Figure 2 13 to aperture J3 in top and back of
Bridge. Figures 6 represents the center bearing on which the bars rest L1 & 2 aro
openings for the coupling bars to work working the moveable grids L3 & 4 are
openings for the endless chain to work over H 4 & 5 are cramps for coupling the
frames back and front together on the center bearing Figure 1 D and figure 2
D2 is the dead plate I and II figure 2 is the bottom Bridge K1 is rope pulley
for revolving the front shaft from the engine K 23 & 4 are the brackets for
carrying the front shaft.
I do not confine myself to any number or particular form my Invention consists
in moveable grids and discs inside frames as explained These frames when smaller
than size of the Furnace are completed with suitable side bars fitted to sides of the
furnaco.
Having thus stated the nature of my Invention and described how the same
may be carried out into operation, I wish it distinctly understood that I do not
confine myself to the details given or mode of accomplishing the same as the same
may be considerably varied but what I claim is
First The Improved Fire grate as shewn in Figures 1. 2. 3. 4. 5 and 6 frames in
which moveable grids and discs are worked to clear the air spaces of what would
form clinker and retard and prevent combustion.
Secondly The improved Bridge for admitting air over the ends of the bars in
front of the top Bridge and fire clay blocks as shown with hollow chambers for
heating air to meet the unburnt gases at the back of the Bridge.
RICHARD ARTHUR WILSON,
Pendleton Iron Works,
Manchester.