Year: 1897

page_text: Date of Application, 1st Oct.; 1897
Complete Specification Left, 1st July, 1898-Accepted, 20th Aug., 1898
I, GEORGE ROBERTSON HISLOP, of the Gas Works, Paisley, in the County of
Renfrew, Engineer and Gas Works Manager, do hereby declare the nature of
this invention to be as follows:-
This invention has for its object to improve the construction and increase the
life and efficiency of gas producers.
Hitherto such producers have been formed with a base of ordinary fire bars
placed horizontally or of a solid hearth with brickwork rising therefrom and
joining the side walls of the producer. My improvements consist in combining
with a solid hearth of reduced width a series of bars or plates resting on bearing
brackets rising at a suitable angle so as to form inclined gratings on either side
of the solid hearth extending therefrom to the brickwork sides of the producer at
a suitable height above the solid portion of the hearth. The said bars or plates
may be laid in any convenient position horizontally or vertically and are provided
with slits or equivalent means for the passage of air and steam to the fuel in the
producer, brick lining being dispensed with. The said rising sides may be
straight or more or less curved inwards to give rigidity to the bearing brackets
and provide a larger area beneath for ash and water pan chambers which I con-
struct under the angled base of the producer and into and through which air and
steam are supplied to the producer being either induced by the draught of the
chimney or forced by a jet of steam or air blower. For this latter purpose I
enclose the said chambers with air tight doors and upon which I attach a suitable
blowing device with adjustable discs for supplying and controlling the amount of
air and steam that may be necessary under varying circumstances and for the
production of any desired temperature.
The bars forming the inclined gratings on each side of the hearth may be formed
in single lengths or may be divided into two or more lengths and may be secured
at or near their ends by removable staples or catches engaging the bearing
brackets and projections formed on the under sides of the bars. The inclined
gratings extend from the hearth to within a short distance of the vertical brick
sides of the producer so as to admit air and steam into the body of the fuel within
the producer; but in proximity to the brick walls they are replaced by solid
plates which prevent the flow of air up the sides of the brickwork and outwith the
body of fuel.
By the arrangement described the production of clinker is obviated and the
trouble hitherto experienced in its removal avoided.
Dated this 30th day of Sentombor 1807
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
int Vincent Street, Glasgow, Agent for the Applicant.

page_text: I, GEORGE ROBERTSON HISLOP, of the Gas Works; Paisley, in the County of
Renfrew, Engineer and Gas Works Manager, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:
This invention has for its object to improve the construction and increase the
life and efficiency of gas producers.
Hitherto such producers have been formed with a base of ordinary fire bars
placed horizontally or of a solid hearth with brickwork rising therefrom and
joining the side walls of the producer. My improvements consist in combining
with a solid hearth of reduced width a series of bars or plates resting on bearing
brackets rising at a suitable angle so as to form inclined gratings on either side
of the solid hearth extending therefrom to the brickwork sides of the producer at
a suitable height above the solid portion of the hearth.
In the accompanying drawings which illustrate the invention Figure 1 is a
transverse vertical section of the improved gas producer, Figure 2 is a longitudinal
vertical section, Figure 3 is a front sectional elevation and Figure 4 is a sectional
plan of the same. Figure 5 is a view to a larger scale of part of Figure 1. Figure 6
is a side elevation showing part of the grating of the producer and Figure 7 is a
part plan of the same.
As shown by these drawings the gas producer A is formed with a central solid
hearth B of reduced width, and the bottom is formed by combining with this
reduced hearth a series of bars or plates C resting on bearing brackets D rising
at an angle so as to form inclined gratings on either side of the solid hearth B
extending upwards to join the brickwork sides A' of the producer.
The said bars or plates C may be laid in any convenient position horizontally
or vertically and are provided with slits at c or equivalent means for the passage
of air and steam to the fuel in the producer, brick lining being dispensed with.
The said rising sides may be straight or more or less curved inwards to give
rigidity to the bearing brackets D and provide a larger area beneath for ash and
water pan chambers E which I construct under the angled base of the producer
and into and through which air and steam are supplied to the producer, being
either induced by the draught of the chimney or forced by a jet of steam or by
an air blower. For this latter purpose I enclose the said chambers E with air
tight doors F and to which I connect a suitable blowing device by the pipes G
terminating in adjustable discs or grids H for supplying and controlling the
amount of air and steam that may be necessary under varying circumstances and
for the production of any desired temperature.
The bars forming the inclined gratings on each side of the hearth may be
formed in single lengths, but are preferably divided as shown into two (or more)
lengths and are secured at their ends in recessed or pocket brackets built into
the brick work and intermediately or at their mid points by removable staples
or catches I as shown at Figures 6 and 7 engaging the bearing brackets D) and
projections c¹ formed on the under sides of the bars C. The inclined gratings C
extend from the hearth B to within some distance of the vertical brick sides A¹
of the producer A so as to admit air and steam into the body of the fuel within
the producer; but in proximity to the brick walls they are replaced by solid
plates or checked bars C which prevent the flow of air up the sides of the brick-
work and outwith the body of fuel. A water pipe J extends along the under side
of each of the inclined gratings from which water drips into the ash chambers E,

page_text: which latter are closed in front by doors K through which steam or air may be
directed from the pipes G.
By the arrangement described the production of clinker is obviated and the
trouble hitherto experienced in its removal avoided.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
-
1. A gas producer, composed of a brickwork chamber having a narrow solid
hearth combined with inclined gratings extending therefrom on either side to the
brickwork sides of the chamber and having ash and water pan chambers formed
under the gratings substantially as described.
2. In a gas producer the combination of a central solid hearth inclined gratings
on either side thereof closed ash and water pan chambers under said gratings
adjustable grids fitted on the doors of said chambers and piping connecting said
grids to a blower for forcing air or steam into said chamber and through the
gratings substantially as described.
3. In a gas producer having a central solid hearth and inclined gratings on
either side the combination with the grate bars of bearing brackets adapted to
support them at any desired inclination and clips or staples for securing together
the bars and brackets substantially as described.
1000
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow, Agent for the Applicant.