Improvements in Gas Retort Lids and Fastenings.
Year: 1886

page_text: Date of Application, 16th Apr., 1836.
Complete Left, 14th Jan., 1887.
Complete Accepted, 15th Feb., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Gas Retort Lids and Fastenings.
I, WILLIAM WILLIAMS Box of the Gas Works, Crayford, in the County of Kent,
Manager of Gas Works, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the construction of retort lids and fastenings in such
a manner as to afford great facility for opening and closing the lids, while from the
way in which the lids on closing them cleanse their own surfaces together with the
faces of the mouthpieces, render them superior to many now employed.
The face of the mouthpiece to which this invention is applied, is turned or made true.
The invention consists in fixing a lug on one side of the mouthpiece, a pin, the outer
portion of which has a screw thread cut on it, while a portion between the screw and
the lug is left plain. Upon this pin is pivotted a cross bar, one end of the bar having
a hole to receive the pin and the other a handle to be used for opening and closing the
lid. The lid is fixed to the cross bar and has a faced projection round its circumference
on its inner side. The periphery of the lid is chamfered or brought down to a sharp
edge so that on making the cross bar and lid partially revolve upon the pin, the edge
of the lid will cut away or remove any deposit that may adhere to the face of the
mouthpiece, while the edges of the face of the mouthpiece will also clear away any
deposit that may accumulate on the inner side of the projecting part of the lid, so that
when brought together they may fit close. On the opposite side to the lug before
mentioned there is a hook or catch so formed as to receive one end of the cross and retain
it in position. The pin referred to above has a screwed nut with a handle to it, which
is screwed down over the cross bar and over this handled nut there are two back nuts
placed. When the lid is open it is prevented from falling down by a stop on the cross
bar pressing against the side of the mouthpiece, and when it is desired to close the lid,
all that is necessary is to take hold of the handle of the cross har-and make the lid
partially revolve until the end of the cross bar rests upon the hook or catch before
mentioned, when upon giving a partial turn to the handled nut, the lid will be brought
into closer contact with the mouthpiece, and a gas tight joint ensured.
The wearing surfaces of the hook and cross bar may be steeled and hardened, and
the hook or catch may have a roller or spring applied to it to reduce friction.
Lids and fastenings made in accordance with this invention may be applied to
existing mouthpieces.

page_text: COMPLETE SPECIFICATION.
Improvements in Gas-retort Lids and Fastenings.
I, WILLIAM WILLIAMS Box of the Gas Works Crayford, in the County of Kent,
Manager of Gas Works 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, reference being had to the accom-
panying drawings and to the letters and figures marked thereon, that is to say:-
This invention has for its object the construction of retort lids and fastenings in such
a manner as to afford great facility for opening and closing the lids, while from the way
in which the lids on closing them cleanse their own surfaces together with the faces
of the mouthpieces, render them superior to many now employed.
.
In order that the invention may be easily understood drawings are attached hereto
of which the following is a description. Fig. 1 is a side elevation of the retort
mouthpiece and lid. Fig. 2 a front elevation when the lid is closed, together with a
part of it in section. Fig. 3 a front elevation when the lid is open, and Fig. 4 a plan.
The face A of the mouthpiece B to which this invention is applied is turned or made
true. The invention consists in fixing to a lug Con one side of the mouthpiece a
pin D, the outer portion E of which has a screw thread cut on it, while a portion F
between the screw and the lug is left plain. Upon this pin is pivotied a cross bar G,
one end of the bar having a hole to receive the pin and the other a handle H to be
used for opening and closing the lid. The lid is fixed to the cross bar and has a faced
projection round its circumference on its inner side. The periphery or outer
circumference of the lid is turned to such a form as to present a sharp edge, so that on
making the cross bar and lid partially revolve upon the pin, the edge of the lid will cut
away or remove any deposit that may adhere to the face of the mouthpiece, while the
edge of the face of the mouthpiece will also clear away any deposit that may accumulate
on the inner side of the projecting part of the lid, so that when brought together they
may fit close. On the opposite side to the lug before mentioned there is a hook or
catch so formed as to receive one end of the cross bar G and retain it in position.
The pin referred to above has a screwed nut K with a handle L to it which is screwed
down over the cross bar, and over this handled nut there are one or more back nuts M
placed. When the lid is open it is prevented from falling down by a stop N on the
cross bar pressing against the side of the mouthpiece, and when it is desired to close
the lid, all that is necessary is to take hold of the handle H of the cross-bar and make
the lid partially revolve until the end of the cross bar rests upon the hook or catch J
before mentioned, when upon giving a partial turn to the handled nut K, the lid will be
brought into closer contact with the mouthpiece and a gas tight joint ensured.
The wearing surfaces of the hook and cross bar may be steeled and hardened, and
the hook or catch may have a roller or spring applied to it to reduce friction, or the

page_text: adjustment necessary to meet ordinary wear may be made by the insertion of one or
more thin washers which may be removed as required.
Lids and fastenings made in accordance with this invention may be applied to
existing mouthpieces."
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. Mouthpieces made with lugs cast on them as herein described and shown on the
drawings.
2. Lids attached to cross bars which are each furnished with a handle, pivotted on
one side, and are provided with a stop N as herein described and shown on the
drawings.
3. The nut K with handle I as herein described and shown on the drawings, and
4. The hook or catch J provided with one or more washers O as herein described
and shown on the drawings.
W. H. BENNETT,
Agent for the Applicant.