AN IMPROVEMENT IN LIDS OR COVERS OF FUEL ECONOMISERS AND IN THE METHOD OF FIXING THEM IN POSITION AND IN REMOVING THEM THEREFROM PROVISIONAL SP
Year: 1882

page_text: LETTERS PATENT to Edward Green of Heath Old Hall, Wakefield in the
County of York for an Invention of AN IMPROVEMENT IN
LIDS OR
COVERS OF FUEL ECONOMISERS AND IN THE METHOD OF FIXING THEM IN
POSITION AND IN REMOVING THEM THEREFROM
PROVISIONAL SPECIFICATION left by the said Edward Green at the
Office of the Commissioners of Patents on the 9th August 1882.
EDWARD GREEN of Heath Old Hall, Wakefield in the County of York
"AN IMPROVEMENT IN LIDS OR COVERS OF FUEL ECONOMISERS AND IN THE
METHOD OF FIXING THEM IN POSITION AND IN REMOVING THEM THEREFROM."
.
The object of my Invention is, an improvement in lids or covers of fuel
economisers and in the method of fixing them in position and in removing them
therefrom.
Hitherto lids or covers have been fitted to fuel economisers by lodging them on
the top of the casing as to overlap the openings and then fixing them in position
by under straps and screws.
According to my Invention I make the lids or covers with tapered edges to fit
correspondingly shaped edges of the apertures in the casing, the smaller diameter
of the casing apertures being at the top surface, whereby the lids or covers have to
be fitted into them from the inside and be drawn up into position by a temporary
fitting bolt or otherwise.
The lid or cover has preferably a channelled aperture at its upper part and also
a "Lewis hole" for the reception of the "Lewis bolt" which is fitted by a
screw to an upper cross bar or saddle, gauged to fit any of the apertures in
the casing.
The edges of the lids may be threaded to screw upwards into position or they
may be plain to fit the apertures by surface contact.
The temporary upper cross bar or saddle is applicable for removing any of tho
covers so fitted by a reverse movement of the screw, the ends of the saddle being
also provided with "Lewis bolts". to engage in the "Lewis holes" of the
neighbouring covers to resist the central pressure or
"vice versa."
The lids or covers are put into the casing through the neck of the connection
and when in position are held firmly by the internal pressure which soon "sets"
them.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Green in the Great Seal Patent Office on the 9th February
1883.
AN
EDWARD GREEN of Heath Old Hall, Wakefield in the County of York.
IMPROVEMENT IN LIDS OR COVERS OF FUEL ECONOMISERS AND IN
METHOD OF FIXING THEM IN POSITION AND IN REMOVING THEM THEREFROM.
THE
The object of my Invention is an improvement in lids or covers of fuel
economisers and in the method of fixing them in position and in removing them
therefrom.
Hitherto lids or covers have been fitted to fuel economisers by lodging them on
the top of the casing as to overlap the openings and then fixing them in position
by under straps and screws.
According to my Invention which I illustrate in the annexed drawings Figures 1
and 2 I make the lids or covers A A with tapered edges B B to fit correspondingly
shaped edges C C of the aperture D in the casing E the smaller diameter of the casing
apertures being at the top surface whereby the lids or covers A A have to be fitted
into them from the inside of the casing Ĕ and be drawn up into position by a
temporary fitting bolt or otherwise. The lid or cover has preferably a channelled
aperture a at its upper part and also a "Lewis hole" for the reception of the
Lewis Bolt" F which is fitted by a screw G to an upper cross bar or saddle H
gauged to fit over any of the apertures in the casing. The edges of the lids may
be threaded to screw upwards into position or they may be plain to fit the apertures
by surface contact.
"
The temporary upper crossbar or saddle H is applicable for removing any of the
covers so fitted by a reverse movement of the screw G. The ends of the saddle
may be provided with "Lewis Bolts" to engage in Lewis holes if required.
The lids or covers are put into the casing through the neck of the connection
and when in position are held firmly by the internal pressure which soon
"sets" them.
Having now described the nature of my said Invention and in what manner the
same is to be performed I declare that I claim :-
The application or employment of lids or covers with angled edges to fit
correspondingly shaped apertures in the top casing of fuel economizers said lids or
covers being put into position from the inside as described and substantially by
the means or appliances shown in the annexed drawings.
In witness whereof I the said Edward Green have hereunto set my hand
and seal this eighth day of February in the year of our Lord, One
thousand eight hundred and eighty three.