Year: 1886

page_text: Date of Application, 30th Mar., 1886.
Complete Left, 30th Dec., 1886.
Complete Accepted, 4th Feb., 1887.
I, GEORGE KING of Beckton Gas Works in the County of Essex, Foreman
Engineer do hereby declare the nature of this Invention to be as follows:-
My present Invention relates principally to fastenings for retort lids of the kind
forming the subject matter of Letters Patent No. 7236 granted to me as of the
5th day of May 1884 and my said Invention has for its object to simplify and improve
the construction and fitting of the operating parts by which the wedging action for
fastening the retort lid is obtained and to provide a catch which is adjustable so as to
enable the cam bolt which in some fastenings connects the fastening bar to the retort
lid for purposes of adjustment to be dispensed with.
According to my present invention I secure the fastening bar and the hand lever
which operates it at the joint ends between lugs on the side of the retort mouth piece
and I engage the said bar and lever together by an eccentrically placed pin and slot.
The said bar and lever are secured together and between the lugs on the retort mouth
piece by a pin passed through all of them and constituting a centre upon which the
lever turns. The fastening bar is preferably fixed to the retort lid by an ordinary
bolt the catch with which the nose end of the bar engages being made with a screwed
stem passed through lugs on the retort mouth piece and having thereon a screwed
nut situated between these lugs so that by turning this nut the catch can be adjusted
as required to ensure a properly tight closure of the retort mouth by the lid. The
front end of the said catch has preferably a doubly inclined surface for guiding the
nose of the fastening bar thereover and an antifriction roller to take the bearing of
the fastening bar when the longitudinal movement is given to it in fastening and
unfastening.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for George King.

page_text: I, GEORGE KING of Beckton Gas Works in the County of Essex, Foreman
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:-
My present Invention relates principally to fastenings for retort lids of the kind
forming the subject matter of Letters Patent No. 7236 granted to me as of the
5th day of May. 1884 and.my said present invention has for its object to simplify and
improve the construction and fitting of the operating parts by which the wedging
action for fastening the retort lid is obtained and to provide a catch which is adjustable
so as to enable the cam bolt which in some fastenings connects the fastening bar to
the retort lid for purposes of adjustment to be dispensed with.
I will describe my present Invention with reference to the accompanying drawings
Figures 1 and 2 of which represent respectively in front elevation and plan a retort
mouth piece and lid fitted with my improvements the remaining Figures being details
which will be hereinafter referred to. The fastening bar A and the hand lever B
which operates it are secured at their joint ends between lugs C on the side of the
retort mouth piece, and I connect the said bar and lever together by means of an
eccentrically placed pin D on the bar A engaging in a hole E in the lever B shown
respectively in Figures 3 and 4. The said bar and lever are secured together between
the lugs on the retort mouth piece by a pin F passed through all of them and
constituting a centre upon which the lever B turns, the opening in the bar A through
which the pin F passes being elongated as shewn in Figure 3 to admit of a lateral
motion being given to the bar when securing the lid G of the retort in its closed
position and when releasing the said bar from the retaining catch. The fastening
bar A is preferably fixed to the retort. lid G by an ordinary bolt and nut H passing
through the bar and a lug on the lid. The catch I with which the nose end a of the
har A engages is shown separately in plan and side view in Figure 5 and is provided
with a screwed stem (as shown) which is passed through lugs K on the retort mouth
piece and is secured therein by a screwed nut L situated between the said lugs so that
by turning the nut L the catch can be adjusted as required to ensure a properly tight
closure of the retort mouth by the lid G. The front end of the catch I has preferably
a doubly inclined surface for guiding the nose or end a of the fastening bar A
thereover, and an antifriction roller for the end of the fastening bar to bear against
in fastening and unfastening.
Figures 1 and 2 illustrate the retort lid as closed and secured by the har A the
outer end thereof being engaged with the catch I. To unfasten the lid the lever B is
moved outwards from the lid, thereby causing the bar A to receive a longitudinal
movement by reason of the engagement of the hole E with the eccentric pin D on the
bar A and thus release the nose a of the bar from the catch I and admit of the lid G
being opened by the continued movement of the lever, the lid turning with the bar
and lever on the pin F as a centre.

page_text: To close and fasten the lid the lever B is moved in the reverse direction or towards
the mouth of the retort and when the lid is closed a longitudinal motion is given to
the bar and the lid in the reverse direction by the engagement of the hole and pin E
and D causing the end of the bar to engage with the catch I and thus secure the
lid G in its closed position and in order to ensure a tight joint between the lid and
the mouth piece, the nut L on the screwed stem may be turned so as to adjust the
catch I to proper position to firmly hold the door in its closed position. The part
at a² of the nose end of the bar should preferably be inclined to give a wedging action
on closing the lid.
Of course the pin D may be on the lever B and the hole E in the bar A if desired.
Having now described and particularly ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is.—
1st. In fastenings for retort lids the combination of the cross bar A and hand
lever B connected together by an eccentrically placed pin in the one engaging an
eccentrically placed hole in the other, both the cross bar and the lever being fitted to
turn on a pin passed through them and through lugs cast on the mouth piece
substantially as hereinbefore described and illustrated by the accompanying drawings.
2nd. In fastenings for retort lids the combination with the cross bar A of the
adjustable catch I constructed and arranged substantially as and for the purpose
hereinbefore described and illustrated by the accompanying drawings.
3rd. The general construction combination and arrangement of parts constituting
the fastening for retort lids as hereinbefore described and illustrated by the
accompanying drawings.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, W.C.,
Agent for George King.