Improvements in Apparatus employed in the Manufacture of Gas.
Year: 1893

page_text: Date of Application, 3rd July, 1893-Accepted. 12th Aug., 189
COMPLETE SPECIFICATION.
Improvements in Apparatus employed in the Manufacture of Gas.
I, GEORGE WINSTANLEY of The Gas Works Coventry, in the County of
Warwick, Gas Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
This invention for improvements in apparatus employed in the manufacture of
gas relates chiefly to the construction of the hydraulic main and its attachments,
and has for its objects to reduce the weight of the said main and connecting pipes,
and thereby reduce the downward pressure on the mouthpieces of the retorts, and
by shortening the ascension pipes to free the gas from the retorts early, and also to
so form the dip as to obviate any tendency to a stoppage of the flow of gas from
the retort into the hydraulic main.
In the accompanying two sheets of illustrative drawings:
:-
Figure 1 represents a side elevation of a hydraulic main constructed according to
this invention, Figure 2 an end elevation, Figure 3 a plan, Figure 4 a horizontal
section and Figure 5 is a transverse section to an enlarged scale of the same.
An open trough a having an inclined bottom 6 forms, with its cover plate c, a
trapezoidal shaped cross-section, its ends being closed by the cover plates d. Along
the whole length of the said hydraulic main extends a division plate or midfeather e
dipping downwards to within a short distance of the bottom of the main, and being
joined to one of the outer side plates of the main by a number of short partition
plates g which divide the whole length of the main, between the side and the said
midfeather plate e, into separate compartments access to each of which is obtained
through an opening in the cover plate c, the said opening being normally closed
by suitable plug covers secured in place by lugs which engage with projecting
brackets m on the cover plate when rotated and form together a kind of bayonet
joint fastening.
Each separate compartment so formed is connected by an ascension pipe n to the
mouth piece of a corresponding retort and replaces the ordinary dip pipe, its down-
ward opening or escape orifice being sealed by the contained tar or liquor, or both
in combination, in the usual manner.
On the side of the hydraulic main opposite to the aforesaid dip compartments, is
a hood o which descends to nearly the bottom of the main and to the inside of
which the tar take off pipe p is connected, thus enabling the heavier tar in the
bottom of the main to be carried off by the said tar take off pipe, and thereby
reducing the resistance to the flow of gas from the retorts. The gas take off
piper is connected to the main cover plate c as shown, or to other suitable part of
the main.
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. In a hydraulic main: the combination of a trough having an inclined bottom,
enclosed compartments connected to the retorts, and a hood for connecting the
bottom of the main to the tar take off pipe substantially as described.
2. In a hydraulic main: the construction of separate compartments by means of
a midfeather plate connected to the side of the main by partition plates substantially
as described.
3. Securing the plug covers i to the main cover e by means of lugs / engaging
with brackets m substantially as described.

page_text: 4. The arrangement and construction of hydraulic mains, substantially as
described with reference to the drawings hereunto annexed.
Dated this 3rd day of July 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.