Improvements in Means for Securing the Lids of Gas Retorts, applic. able also for Securing other Lids, Flaps, Doors and the like.
Year: 1899

page_text: Date of Application, 4th Jan., 1899
Complete Specification Left, 4th Nov., 1899-Accepted, 9th Dec,, 1899
Improvements in Means for Securing the Lids of Gas Retorts, applic.
able also for Securing other Lids, Flaps, Doors and the like.
I, STEPHEN HOLMAN, of 1, Collingham Road, South Kensington, in the County
of London, Engineer, do hereby declare the nature of this invention to be as
follows:
In
The object of my invention is to provide simple and efficient means for securing
lids flaps or doors and is especially applicable to the securing of the lids of
gas retorts, and I will so describe it as from this description its other applications
will also be readily understood. According to my invention I dispense with cross
bars as hitherto used and I effect the securing and releasing of the lid by means
of an eccentric and handle carried by the lid which eccentric when turned in one
direction effects the securing of the lid and when turned in the other direction
releases the lid. An arrangement according to my invention is as follows:
bearings in webs or lugs formed on, or fixed to the lid I mount an excentric pin
provided with a handle for operating it. On the excentric part of the said pin
is carried one end of a strut or bar the other end of which bears upon a stop on
some fixed part in proximity to the lid preferably on the lug on the mouth piece
on which the lid hinges. After the lid is closed against the mouthpiece of the
retort the handle and excentric are turned in a direction which causes the said
excentric to force the strut or bar against the said stop which has the effect of
pressing the lid firmly against the mouthpiece so as to make a tight closure.
To open the lid the handle is turned in the opposite direction so that the strut
The strut or bar
or bar is released from the stop and the lid is free to open.
may be made adjustable in length which may be done by making it in parts
screwed together. In this arrangement one lug only is required on the mouth-
piece ri-that on which the lid is hinged but if preferred instead of using the
strut, or bar described, the excentric may be at the ends of the webs, or lugs.
cast on. or secured to the lid, the said webs, or lugs, projecting sufficiently to
embrace a swivel catch on the side of the mouth piece opposite to the hinge the
catch being so formed as to engage with the excentric pin so that when the
excentric is turned in one direction it by pressure on the part of the catch on
which it hears forces the lid tightly against the mouthpiece, and when turned in
the other direction releases the catch so that the lid can be opened.
Dated this 4th day of January 1899.
JOHNSONS & WILLCOX.
47, Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Means for Securing the Lids of Gas Retorts, applic-
able also for Securing other Lids, Flaps, Doors and the like.
I. STEPHEN HOLMAN, of 1, Collingham Road, South Kensington, in the County
of London, Engineer, do hereby declare the nature of this invention and in what
TD 71

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:―
The object of my invention is to provide simple and efficient means for securing
lids, flaps, or doors, and is especially applicable to securing the lids of gas retorts
and I will so describe it with reference to the accompanying drawings, as, from
this description, its other applications will also be readily understood.
"
Figures 1 and 2 are a front elevation and a sectional plan of an arrangement
in accordance with this invention, and the other figures are modifications as
hereinafter described. The part of the retort, or mouthpiece, shewn is marked
A, and the lid is marked B. According to my invention I dispense with cross
bars as hitherto used, and I effect the securing and releasing of the lid by means
of an eccentric and handle, which eccentric, when turned in one direction, effects
the securing of the lid, and when turned in the other direction, releases the lid.
The arrangement according to my invention represented in Figures 1 and 2 is
constructed as follows:-In bearings in webs, or lugs, b, formed on, or fixed to,
the lid B, I mount a pin C formed with an eccentric part e and provided with a
handle for operating it. On the eccentric part of the said pin is carried one
end of a strut, or lock bar, 1), the other end of which bears upon a stop on some
fixed part in proximity to the lid, preferably on the lug a on the mouthpiece
on which the lid hinges. After the lid is closed against the mouthpiece of the
retort the pin C is turned by means of the handle in a direction which causes
the eccentric part of the said pin to force the strut, or lock bar, D, against the
said stop (the lug in the arrangement shown) which has the effect of pressing
the lid firmly against the mouthpiece so as to make a tight closure. To open the
lid the handle is turned in the opposite direction so that the strut, or lock
bar, D, is released from the stop (a) and the lid is free to open. The strut, or
lock bar, D, may be made adjustable in length, which may be done by making it
in parts screwed together. The arrangement shewn in Figures 3 and 4 is generally
like that hereinbefore described and the corresponding parts are marked with
the same letters of reference, but instead of the webs, or lugs, b, being formed on
the lid, the lid is formed separately and connected to the said webs, or lugs, by
guide pieces 1², so that it can be slidden longitudinally and fixed by screws at b
In the arrangements Figures 1 to 4 one lug only is required on the mouthpiece
riz. that on which the lid is hinged, but, if preferred, instead of using the strut
or lock bar, D), as herein before described, the eccentric may be at the ends of
the webs, or lugs, b, cast on, or secured to, the lid B, as shewn in front elevation
and sectional plan in Figures 5 and 6, the said webs and lugs projecting
sufficiently to embrace a swivel-catch E, centered at e on the side of the mouth-
piece opposite to the hinge, the catch E being so formed as to engage with the
eccentric part of the pin (', so that when the eccentric pin is turned in one
direction it, by pressure on the part of the catch, on which it bears, forces
the lid B, tightly against the mouthpiece A and when turned in the other direct-
ion releases the catch E so that the lid B can be opened. In the arrangements,
Figures 1 and 2, and 5 and 6, I have shewn the hinge pins as being made eccentric
so that they can be adjusted by turning them to make the lid accurately fit
against the mouthpiece.
"
Having now particularly described and ascertained the nature of this invention,
and in what manner the same is to be performed, I declare that what I claim is:
1. In devices for securing retort lids, or other lids, flaps, or doors, and the like,
a strut, or lock bar, a stop, and an eccentric, so combined that, when the eccentric
is operated, it forces the strut, or lock bar, against a stop, to effect the securing
of the lid, or the like, substantially as hereinbefore described and illustrated by
Figures 1, 2, 3 and 4 of the accompanying drawings.
2. In devices for securing retort lids, or other lids, flaps, or doors, and the like,
an eccentric, carried by the door, at the side opposite the hinge, and an open catch

page_text: or hook swivelled to the retort mouthpiece, or equivalent fixed part, so that it
can, when the lid, or the like, is closed, be turned over the eccentric which can
then be turned so as by bearing against the catch to effect the securing of the lid,
door, or the like, substantially as hereinbefore described and illustrated in
Figures and 6 of the accompanying drawings.
3. The several constructions of devices for closing retort lids, or the like, as
herein before described and illustrated in the accompanying drawings.
Dated this 4th day of November 1899.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.