Improvements in or connected with the Lids of Gas Retorts or the like.
Year: 1893

page_text: Date of Application, 6th Dec. 1893
Complete Specification Left, 1st Feb., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Lids of Gas Retorts or
the like.
1, CHARLES CLEMENT WALKER of Midland Iron Works, Donnington near
Newport in the County of Salop, Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to the lids of retorts to which lids a sliding movement is
imparted with the object of causing the lid to rub on the rim of the mouthpiece
when it is closed and opened. Means for this purpose are described in the
Specification of Letters Patent No. 6229 dated 10th April 1884 and it is the object
of my invention to provide means whereby a more efficient rubbing action of the
lid upon the rim of the mouthpiece is ensured. To effect this I make the eccentric
boss which is upon the screw and which engages in the corresponding recess in the
lid of less depth or thickness than hitherto or than the depth of the recess and 1
place a flexible device such as a coiled or how spring or springs between the lid and
the cross bar which device keeps the lid in contact with the rim of the mouthpiece
during the final portion of the operation of the screw in closing the mouthpiece and
also during the first portion of the operation of the screw in opening the mouthpiece
and as, during such times, the eccentric boss gives an eccentric movement to the
lid a very efficient rubbing of the lid on the rim of the mouthpiece is ensured as
the lid is by the flexible device or spring or springs caused at such portions of the
operation of the screw to keep in contact with the said rim.
Dated this 6th day of December 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with the Lids of Gas Retorts or
the like.
1. CHARLES CLEMENT WALKER of Midland Iron Works, Donnington, near
Newport, in the County of Salop, 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 relates to the lids of retorts to which a sliding movement is
imparted with the object of causing the lid to rub on the rim of the mouthpiece
when it is closed and opened. Means for this purpose are described in the
Specification of Letters Patent No. 6229 dated 10th April 1884 and it is the object
of my invention to provide means whereby a more efficient rubbing action of the
lid upon the rim of the mouthpiece is ensured. To effect this I make the eccentric
boss which is upon the screw and which engages in the corresponding recess in the
lid of less depth or thickness than hitherto or than the depth of the recess and I
place a flexible device such as a coiled or bow spring or springs between the lid and
the cross bar which device keeps the lid in contact with the rim of the mouthpiece
during the final portion of the operation of the screw in closing the mouthpiece and
also during the first portion of the operation of the screw in opening the mouthpiece
and, as during such times, the eccentric boss gives an eccentric movement to the
id a very efficient rubbing of the lid on the rim of the mouthpiece is ensured as

page_text: the lid is by the flexible device or spring or springs caused at such portions of the
operation of the screw to keep in contact with the said rim
The accompanying drawings shew manners in which my invention may be carried
into effect.
Figure 1 is a plan and Figure 2 is a section of a retort mouthpiece and lid
provided with my invention and Figure 3 is a sectional view of part thereof drawn
to a larger scale.
Figure 4 is a plan shewing a different kind of spring.
A is the retort mouthpiece. B is the lid. C is the cross bar and D is the screw
passing through the said bar for pressing the lid onto the mouthpiece. Upon this
screw is the eccentric boss d which engages in the recess in the lid. The said
boss d is of less thickness or depth than the depth of the recess b. E is a coiled
spring placed between the lid B and the cross bar C. F is a plate or box which
takes the bearing of one end of the spring the said plate or box having an opening
in it of sufficient size to allow of the working of the screw D. In Figure 4 I have
shewn a bow or flat spring E2 as taking the place of the coiled spring E the other
parts being like, and lettered similarly to, those shewn in Figures 1, 2 and 3. The
spring E (or E2) keeps the lid in contact with the rim of the mouthpiece during the
final portion of the operation of the screw in closing the mouthpiece and also during
the first portion of the operation of the screw in opening the mouthpiece so that the
action of the eccentric combined with that of the spring gives a very efficient
rubbing action as aforesaid.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The combination with the retort mouthpiece and lid and cross bar and screw of
an excentric on the screw engaging in a recess in the lid the said recess being of
greater depth than the thickness of the excentric and of a spring or springs
or yielding device between the lid and the cross bar substantially as and for the
purpose herein before described and illustrated by the accompanying drawings.
Dated this 1st day of February 1894.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, Agents.