Improvements in Fastenings for Retort Lids.
Year: 1889

page_text: Date of Application, 5th June, 1889
Complete Specification Left, 24th Feb., 1890-Accepted, 29th Mar,, 1890
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Retort Lids.
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 Invention has for its object to provide retort lid fastenings which will make a
very tight joint between the retort lid and mouthpiece and wherein working parts of
the fittings are effectually protected from tar and dirt.
The meeting surfaces of the mouthpiece and lid are faced true so that when they
are brought into close contact by means of the fastenings a very tight joint is
ensured.
The lid is supported by a crossbar by means of a bolt passing through a lug on the
door which bolt also serves by a cam thereon to adjust the face of the lid to that of
the mouthpiece when required.
At one end of the crossbar a hole is formed in which fits an eccentric boss on the
underside of the lever which is used to effect the tight closure of the door.
The crossbar and the lever when in position on the mouthpiece are fitted between
two lugs cast on one side of the mouthpiece, a pin passing through these lugs and
through a hole in the lever, the boss entering the hole in the crossbar. When the
lid, crossbar, lever and pin are fitted together on the mouthpiece the crossbar and
lever together with the lid will be free to swing round the hinge pin, the bearing
surfaces being protected from tar and dirt by the said lugs. A catch and rest are
fitted to a catch box cast on the side of the mouthpiece opposite the aforesaid lugs,
both the catch and rest being held in position by a pin passing through them. The
rest is so fitted into the catch box that the said rest is a fixture and the catch is free
to swing round the securing pin as far as is necessary to allow the catch to be
engaged with and disengaged from the end of the crossbar.
To close and fasten the lid it is closed towards the mouthpiece and in so doing the
free end of the crossbar is raised by an incline on the rest and is supported upon the
said rest, thereby relieving the hinge end of the crossbar from strain causing binding
of the parts in the hinge lugs. The catch is then engaged with the end of the
crossbar and the lever having the aforesaid boss is moved towards the lid so that the
eccentric boss makes a portion of a revolution in the hold of the crossbar causing
the crossbar and lid to be forced towards the mouthpiece face and securing a firm and
tight joint.
During the closing and fastening of the lid the latter is slidden against the surface
of the mouthpiece face. Or in place of the eccentric boss passing through and
operating on the crossbar it may pass through and operate on a lug on the retort lid.
In this case the lid is supported on the crossbar by a double eccentric bolt passing
through the cross-bar lever and lug on the lid. The crossbar is fitted between and
held by the two hinge lugs cast on the side of the mouthpiece as before described, a
hinge pin passing through the hinge lugs and crossbar. The lever which is used to
securely close the lid is formed with a boss having a hole eccentric to the centre of
the boss. The boss is fitted in the hole formed in the lug of the lid. Both the lever
and the lug on the lid are fitted to the centre of the crossbar and the double eccentric
pin passed through and secured in position. The catch box catch rest and pin opposite
the hinged end of the crossbar are the same as those hereinbefore described. When
the whole of the parts described are fitted together and it is desired to close and
fasten the lid it is closed towards the mouthpiece, the catch is engaged with the end
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page_text: of the crossbar and the lever is moved towards the lid, the eccentric boss making a
portion of a revolution round the pin and the effect produced is as hereinbefore
described in the first arrangement.
DL: L
T1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Fastenings for Retort Lids.
J, 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 Invention has for its object to provide retort lid fastenings which will make a
very tight joint between the retort lid and mouthpiece and wherein working parts of
the fittings are effectually protected from tar and dirt.
I will describe my Invention with reference to the accompanying drawings.
On sheet 1 Figure 1 is a side elevation of the mouthpiece lid and fastenings and
Figure 2 is a front elevation Figure 3 a side elevation (opposite to that shewn in
Figure 1) and Figure 4 is a plan of the same Figure 5 shows a detail of the lever.
Figures 6 and 7 shew details of the hinge and catch pins respectively Figure 8 is a
detail of the centre bolt for the cross-bar and lid. Figure 9 is a detail of the lever.
Figure 10 is a detail of the crossbar catch and Figure 11 is a detail of the fixed
rest for the crossbar.
The meeting surfaces of the mouthpiece and lid are faced true so that when
they are brought into close contact by means of the fastenings a very tight joint is
ensured.
a
The lid is supported by the cross-bar B by means of a bolt a passing through
lug a² on the door which bolt a' also serves by the cam a³ thereon to adjust the face
of the lid to that of the mouthpiece M when required.
At one end of the crossbar B a hole is formed in which fits an eccentric boss c¹
on the underside of the lever (which is used to effect the tight closure of the door.
The cross-bar B and the lever C when in position on the mouthpiece are fitted
between the two hinge logs d¹ and 2 cast on one side of the mouthpiece M a pin E
passing through these hinge lugs d' and 'and through a hole c² in the lever (the
boss centering the hole in the cross-bar B. When the lid, crossbar lever and pin
are fitted together on the mouthpiece the crossbar and lever together with the lid
will be free to swing round the hinge pin E the bearing surfaces being protected
from tar and dirt by the said lugs d¹ and d. The catch F and rest G are fitted to
the catch box H cast on the side of the mouthpiece M opposite the lugs d¹ d² both
the catch F and rest G being held in position by a pin passing through them.
The rest G is so fitted into the catch box that the said rest is a fixture and the catch
is free to swing round the securing pin h¹ as far as is necessary to allow the catch to
be engaged with and disengaged from the end of the crossbar B.
To close and fasten the lid A it is closed towards the mouthpiece and in doing so
the free end of the crossbar B is raised by the incline 9 on the rest G and is supported
upon the said rest thereby relieving the hinge end of the crossbar B from strain
liable to cause binding of the lever C in the hinge lugs d¹ and d². The catch F is then
engaged with the end of the crossbar and the lever Ċ is moved towards the lid the
eccentric boss c³ makes a portion of a revolution in the hole b¹ of the crossbar B
..causing the crossbar and lid to be forced towards the mouthpiece face and securing
a firm and tight joint. During the closing and fastening of the lid it is slidden
against the surface of the mouthpiece face. On sheet 2 of the drawings a modification

page_text: is shewn wherein the eccentric boss instead of passing through and operating on the
crossbar passes through and operates on a lug on the retort lid. Figure 12 is a
side elevation of the mouthpiece lid and fastenings and Figure 13 is a front elevation.
Figure 14 is a side elevation (opposite to that shewn in Figure 12) and Figure 15 is
a plan of the same. Figure 16 shews in side and edge views the crossbar separately.
Figure 17 shews the lid separately. Figure 18 shews the lever separately and
Figure 19 shews the double eccentric bolt separately.
In this case the lid A is supported on the crossbar B by a double eccentric bolt a*
passing through the crossbar B the hole in the boss of the lever C and the lug a³ on
the lid as shewn the parts a7 as respectively occupying the holes bb1 of the cross-
bar B and the part a entering the hole in the boss of the lever C which boss enters
the hole in the lug a³. The crossbar B is fitted between and held by the two hinge
lugs d' d cast on the side of the mouthpiece and by the pin E as before described.
The lever (which is used to securely close the lid is formed with a boss c¹ having a
hole c² eccentric to the centre of the boss. The boss c¹ is fitted in the hole a forined
in the lug of the lid A. Both the lever C and the lug a³ on the lid are fitted to
the centre of the crossbar B and the double eccentric pin a¹ is passed through and
secured in position. The catch box H catch F rest G and pin 1 are the same as
those described with reference to sheet 1. When the parts are fitted together and it
is desired to close and fasten the lid A it is closed to wards the mouth piece the catch F
is engaged with the end of the cross bar B and the lever is moved towards the lid
the eccentric boss e' making a portion of a revolution round the part at of the pin
(Figure 19) and in the hole a and the effect produced is as herein before described
in the first arrangement shewn on sheet 1.
Having now described and particularly ascertained the nature of my said Inven-
tion and in what manner the same is to be performed declare that what I
claim is
First. In fastenings for retort lids a lever provided with an eccentric boss operating
on the crossbar or on the lid substantially as and for the purpose herein before
described.
Second. In fastenings for retort lids the combination with the catch of a fixed rest
for supporting the crossbar substantially as hereinbefore described and shewn on the
accompanying drawings.
Third. The arrangement and combination of parts constituting the fastening
for retort lids as hereinbefore described and. shewn on sheet 1 of the accompanying
drawings.
Fourth. The arrangement and combination of parts constituting the fastening
for retort lids as herein before described and shewn on sheet 2 of the accompanying
drawings.
Dated this 24th day of February 1890.
GEORGE KING.