Improvements in Fastenings for Retort Lids and other similar Lids
Year: 1893

page_text: Date of Application, 10th Feb., 1893-Accepted, 20th May, 1893
COMPLETE SPECIFICATION.
Improvements in Fastenings for Retort Lids and other similar Lids
I, DAVID TERRACE, of The Gas Works, Middlesbrough, in the County of
Yorkshire, Engineer and Manager, 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 :-
This invention relates to improvements in retort lid fastenings, for use on inclined'
or horizontal retorts and for other similar purposes.
And in order that my invention may be thoroughly understood, I now proceed to
describe the accompanying drawings thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a vertical section of the mouthpiece and lid.
Fig. 2, is a plan of the top, with some parts described in section.
Fig. 3, is a front elevation.
Fig. 4, is an elevation of the hinge.
Fig. 5, is a vertical section of the hinge joint and caps.
Fig. 6, is a side view of the hinge.
Fig. 7, is a plan of the top of the hinge.
g
This invention has for its object the so making the cross-bars of faced-lids c
and mouthpieces a of retorts as used in the manufacture of gas, to be flexible
instead of the rigid form generally in use, also of the mechanical means for their
adjustment by having excentric caps d' and d on fixed parts of hinges d or e.
The cross-bars 9 may either be made of forged steel, cast steel, malleable iron,
malleable cast iron or other suitable material, but the depth and thickness of same
are such as to resist the usual pressure in gas retorts, making a gas tight joint, and
at the same time admit of an easy sliding motion of the lid c on face of mouth-
piece a, so that should any grit, or dirt, or tar get between same, it would be
readily rubbed off, or displaced by the action of the hand lever and excentric
motion of the cross-bar . Another advantage of the spring-like pressure of
cross-bar 9, as against rigid pressure, is that-in case there may be stoppage or
other obstruction preventing the free egress of gas from the retort the gas would
issue between mouthpiece a and lid and so relieve retorts of undue internal
pressure of gas.
Another part of this invention is to so make the hinged parts d, d', and d, and
fastening of cross-bar in such a manner as before described that they can be readily
adjusted, although the mortise b for receiving hinged lugs in castings are not cast
quite true, the fixed part of hinges may be so adjusted that twisting or setting of
neck of hinged may be avoided. This also applies where the fixed part of hinge d
may be cast as portion of mouthpiece a.
The shape of cross-bar 9 and adjustments may vary somewhat from those shewn
on drawing.
1st. Making cross-bars of faced lids of retort mouthpieces (and other similar
lids) flexible in such a manner as to make joint perfectly tight, and at same time
be able to easily rub the faced surfaces together.
2nd. Adjustment of hinged ends of cross-bars.
The method of working the retort lid and fastening is by the hinges, cross-bar
and other parts, having been fitted up as shewn on drawings, the lid is swung with
cross-bar till the faces meet-the catch is then closed to secure free end of cross-
bar. The excentric action of the hand lever being brought into play presses lid
against face of mouthpiece a, and the excentric action being continued, the faces are
rubbed together by pressure of flexible cross-bar g.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
caps
21
y
1. In retort lid fastenings, the combination of the lid e lugs b hinge d
and d, with fixed part e of hinge for catch and catch f; and flexible cross-bar
with excentric hand lever h, substantially as herein described and according to the
accompanying drawings.
2. In retort lid fastenings, making cross-bars of faced lids of retort mouthpieces
(and other similar lids) flexible in such manner as to make joint perfectly tight,
and at same time be able to easily rub the faced surfaces together, substantially as
herein described and according to the accompanying drawings.
3. In retort lid fastenings, the adjustment of hinged ends of cross-bars,
substantially as herein described and according to the accompanying drawings.
Dated this 10th day of February 1893.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.