IMPROVEMENTS IN RETORT LID FASTENINGS
Year: 1876

page_text: LETTERS PATENT to John Storer and Charles Henry Pugh, both of Stafford,
in the County of Stafford, for the Invention of "IMPROVEMENTS IN RETORT
LID FASTENINGS."
Sealed the 12th Juno 1877, and dated the 23rd December 1876.
PROVISIONAL SPECIFICATION left by the said John Storer and Charles
Henry Pugh at the Office of the Commissioners of Patents on the 23rd
December 1876.
JOHN STORER and CHARLES HENRY PUGH, both of Stafford, in the County
of Stafford. IMPROVEMENTS IN RETORT LID FASTENINGS."
"
This Invention has for its object the socuring of the luted lids to the mouth-piecos
of retorts with case and dispatch, and consists in the employment of lugs attached
to the mouth-piece in the ordinary way. To one of these lugs is hinged the cross
bar, the other end of the bar falling into a catch on the opposite lug. At or near
the centre of the cross bar rises a vertical pin, and through the thickness of the
cross bar there is a horizontal slot in the direction of the axis of the retort. Through
this slot a short bar having a flange or collar at one end and a vertical pin at the
other is made to slide.
To make the apparatus complete a handle or lever having a hole near ono
extremity and a curvilinear slot eccentric to the hole is provided, and when placed
in position the hole in the handle receives the pin or fulcrum fixed to the cross bar,
while the slot receives the pin fastened to the sliding bar. The pin attached to the
sliding bar may be made adjustable.
The action of the apparatus is as follows:-The lid having been placed against
the retort the cross bar is thrown over till it bears on and takes into the catch on
the opposite lug, when by thrusting the lever or handle towards the retort the pin
which works in the eccentric slot, and consequently the sliding bar, is pushed
forward until the flanged end of the bar touches the lid and produces sufficient
pressure thercon to form a tight joint between it and the mouth-piece. A reverse
movement of the handle releases the lid from pressure, when the lid may be removed
with facility.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said John Storer and Charles Henry Pugh in the Great Seal Patent Office on
the 18th June 1877.
JOHN STORER and CHARLES HENRY PUGH, both of Stafford, in the County of
Stafford. "IMPROVEMENTS IN RETORT LID FASTENINGS."
This Invention has for its object the securing of the luted lids to the mouth-
pieces of retorts with ease and dispatch, and consists in the employment of lugs
attached to the inouth-piece in the ordinary way. To one of these lugs is hinged
the cross bar, the other end of the bar falling into a catch on the opposite lug. At
or near the centre of the cross bar rises a vertical pin, and through the thickness of
the cross bar there is a horizontal slot in the direction of the axis of the retort.
Through this slot a short bar having a flange or collar at one end and a vertical pin
at the other is made to slide.
To make the apparatus complete a handle or lever having a hole near one
extremity and a curvilinear slot eccentric to the hole is provided, and when placed
in position the hole in the handle receives the pin or fulcrum fixed to the cross bar,
while the slot receives the pin fastened to the sliding bar. The pin attached to the
sliding bar may be made adjustable.
In order that the foregoing inay be more easily understood Drawings are attached
hereto of which the following is a description:-
-
Fig. 1 is a front elevation of a retort mouth-piece, lid, and fastening apparatus;
Fig. 2 is a vertical section; and Fig. 3, a plan of the same.
Fig. 4 is a front elevation of the cross bar to a larger scale, and Fig. 5 is a plau
of it
Fig. 6 is an elevation, or side or edge view of the lever, and Fig. 7 is the same
part in plan.
Fig. 8 is an end elevation of the sliding bar and pin, and Fig. 9 is a plan of it.
In Fig. 1A is the retort mouth-piece; B, the lid; and C, the cross bar hinged on
one side at D, and falling into the catch on the opposite ear E; F is the lever or
handle, G, being the fixed pin on the cross bar, and H, the pin attached to the
sliding bar I; and K, the eccentric slot. In Figs. 1, 2, and 3, this last pin is shown
as firmly fixed to the sliding bar, but in Figures 8 and 9 the pin is drawn as it is
when made adjustable; I, being the sliding bar, H, the pin working through a slotted¸
hole J and fastoned by a nut L.
The action of the apparatus is as follows:-The lid B having been placed against
the retort mouth-piece A, the cross bar C is thrown over till it bears on and takes
into the catch E on the opposite lug, whion by thrusting the lever or handle F
towards the retort the pin H, which works in the eccentric slot K, and consequently
the sliding bar I is pushed forward until the flanged end of the bar touches the lid
and produces sufficient pressure thereon to form a tight joint between it and the
mouth-piece. A reverse movement of the handle releases the lid from pressure,
when the lid may be removed with facility.
The use of a lever for securing gas retort lids is not new, but a lever with an
eccentric slot K, pin H, pin G, and sliding bar I, together with a slotted cross bar, as
shown at M, Fig. 4, is now.
Having now described and particularly set forth the nature of this Invention
and the manner in which the same is or may be used or carried into effect, we
would observe in conclusion that we do not confine or restrict ourselves to tho
preciso details or arrangements which we have described or referred to, as variations
inay be made therefrom without deviating from the principles or main features of
this Invention, but what we consider to be novel and original, and therefore
claim as the Invention secured to us by the herein-before in part recited Letters

page_text: Patent is, the apparatus for fastening retort lids as herein-before described and shown
on the Drawings.
In witness whereof, we, the said John Storer and Charles Henry Pugh, have
hereunto set our hands and seals, this Ninth day of June, in the year of
our Lord One thousand eight hundred and seventy-seven.
JOHN STORER.
(L.S.)
CHA. HY. PUGH. (LS.)