Year: 1888

page_text: Date of Application, 16th Feb., 1888.
Complete Specification Left, 14th Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
1, JAMES BOGIE TERRACE, of 2 Witchden Road, Brechin, in the County of Forfar,
North Britain, Gas Engineer, do hereby declare the nature of this Invention to be
as follows, that is to say :-
My said Invention has for its object to improve the construction of fireclay gas
retorts and especially to facilitate the removal of carbon therefrom.
In an ordinary fireclay gas retort made with a flat inner end at right angles to
the bottom of the retort, the carbon is usually deposited at and adheres to the inner
end and round the retort for a short distance (about six inches) from the inner end.
The removal of the adhering carbon is a difficult and troublesome operation.
My Invention consists in forming the interior of the retort with an inclined surface
or with inclined surfaces at and near the inner end. The end may be inclined so as
to form a somewhat obtuse angle with the bottom; or in combination with either a
right-angle end or an inclined end or a partly inclined end, inclined surfaces may be
formed round the interior of the retort such inclined surfaces extending from the ends
to a distance of about six inches. With the improved shape of retort end the cake
or shell of carbon is very easily loosened and comes away as from a mould without
requiring to be previously cut into two or more pieces.
EDMUND HUNT,
Applicant's Agent.

page_text: .
I, JAMES BOGIE TERRACE, of 2 Witchden Road, Brechin, in the County of Forfar,
North Britain, 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
ascertained in and by the following statement, that is to say :-
My said Invention has for its object to improve the construction of fireclay gas
retorts and especially to facilitate the removal of carbon therefrom.
In an ordinary fireclay gas retort made with a flat inner end at right angles
to the bottom of the retort, the carbon is usually deposited at and adheres to
the inner end and round the retort for a short distance (about six inches) from the
inner end. The removal of the adhering carbon is a difficult and troublesome
operation.
My Invention consists in forming the interior of the retort with an inclined
surface or with inclined surfaces at and near the inner end. The end may be
inclined so as to form a somewhat obtuse angle with the bottom; or in combination
with either a right angle end or an inclined end, or a partly inclined end, inclined
surfaces may be formed round the interior of the retort such inclined surfaces
extending from the ends to a distance of about six inches. With the improved shape
of retort end the cake or shell of carbon is very easily loosened and comes away as
from a mould without requiring to be previously cut into two or more pieces;
and with the improved shape of retort little or no coke remains when drawing the
retort.
On an accompanying sheet of explanatory drawings I have shown end interiors
of retorts as examples of various forms made according to my said Invention in order
that the manner of performing the same may be properly understood.
Figure, 1, on the sheet of drawings is a sectional side elevation and figures, 2, to 5,
are part longitudinal sections showing five shapes of end interiors of fireclay gas
retorts as made according to my Invention. In these drawings the same reference
letters are used to mark the same or like parts wherever they are repeated.
In the modification shown in figure, 1, the retort, A, is made with the end, B,
inclining inwards from about the middle until it combines with an inclined surface, C,
formed round the sides of the retort. The inclined surface, B, C, in all the modifi-
cations merges at the sides from the form shown at the bottom of the retort, A, to that
shown at, D, at the top.
The modification shown in figure, 2, is like that shown in figure, 1, the inclined
surfaces, B, C, D), being, however, of smaller dimensions and the inclined surface, B,
beginning a little nearer the bottom of the retort.
In the modification shown in figure, 3, the entire end, B, is inclined and the
inclined surface, C, extends somewhat further than as shown in figure, 1.
In the modification shown in figure, 4, the retort is made with a partly inclined
end, B, but with very small inclined surfaces, C, D, extending round the sides of
the retort.

page_text: In the modification shown in figure, 5, the two inclined surfaces, B, C, are made
of a continuously curved form.
I am aware that retorts have been made with detachable inner ends or end
covers and with the sides somewhat thickened to support the covers; but I
make no claim to such detachable covers, my construction being simpler and
practically superior.
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 :-
In fireclay gas retorts forming the interior of the retort with inclined surfaces at
and near the inner end substantially as and for the purposes herein before described
and as shown in the accompanying drawings.
Dated this Thintah do of Nawaban 1000
EDMUND HUNT,
Applicant's Agent.