Resisting Metal or Alloy.
Year: 1888

page_text: Resisting Metal or Alloy.
We, ISAAO SHIMWELL MCDOUGALL and JAMES THOMAS MCDOUGALL both of
Irk Vale, Chadderton near Manchester, Manufacturing Chemists RICHARD KENT
HARTLEY of Springwood House, Chadderton near Oldham, Chemist and THOMAS
SUGDEN of 84 Greengate Street, Oldham aforesaid Engineer all in the County of
Lancaster, do hereby declare the nature of this Invention to be as follows:-
The object of this Invention is to provide a vessel or boiler lined with lead or other
acid resisting metal or alloy in which the lining is secured in an efficient manner to
the external shell of cast iron or other material and so that no parts which will be
injured by acid are exposed to the action of the contents of the vessel and the lining
is less liable to injury and displacement under variations of temperature and pressure
than has hitherto been the case with such vessels or boilers. The arrangement
according to our Invention is that leakage is at once detected and damage is prevented
as the acid is prevented from passing between the lining and the shell.
According to one arrangement of our Invention holes are made in the outer shell
at suitable distances apart and strengthening rings are secured round each hole. The
internal lining of lead or other acid resisting material is brought through this
opening and made to overlap some distance over the exterior of the vessel around the
hole and over the aforesaid ring. A cap or cover lined by the same or other acid
resisting material is placed over the opening and secured by means of a disc or cover
and studs and nuts or other suitable fastenings not exposed to the interior of the
boiler or vessel. Any leakage at the joint passes to the exterior of the vessel and can
be seen and remedied.
We may insert a plug in the said hole which plug may be made of or covered
with lead or other acid resisting material and there may be elastic material between
the lead or the like which covers the opening as aforesaid and that around the
hole so that as the lining creeps it moves outwards and can readily be cut off as
required.

page_text: The bringing of the lead through the shell may be effected by means of flanging or
collars or tubes or other suitable means the lead or the like at which any joints occur
being burnt together.
L
According to a modification we bring the lining through the shell and over a
strengthening ring as before described and secure the said lining by means of a rivet
or plug formed or covered with lead or other acid resisting material the bolt or rivet
being secured by screwing or upsetting the end or other suitable way. Or we may
place on the exterior of the boiler or vessel and over the opening through the shell as
hereinbefore described metal caps with an undercut space inside them and this space
is filled with acid resisting material and connected by burning or fusing or by other
suitable means to the internal lining, these caps when fixed at certain distances on the
outer shell as desired form a support or plug to keep the inner lining in position.
Dated this 9th day of May 1888.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.

page_text: H
V COSTING WITH Lau or other ACIQ
Resisting Metal or Alloy.
We ISAAC SHIMWELL MCDOUGALL and JAMES THOMAS MCDOUGALL both of
Irk Vale Chadderton near Manchester Manufacturing Chemists RICHARD KENT
HARTLEY of Springwood House Chadderton near Oldham Chemist and THOMAS
SUGDEN of 84 Greengate Street Oldham aforesaid Engineer all in the County of
Lancaster 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 :-
The object of this Invention is to provide a vessel or boiler lined with lead or other
acid resisting metal or alloy in which the lining is secured in an efficient manner to
the external shell of cast iron or other material and so that no parts which will be
injured by acid are exposed to the action of the contents of the vessel and the lining
is less liable to injury and displacement under variations of temperature and pressure
than has hitherto been the case with such vessels or boilers. The arrangement
according to our Invention is such that leakage is at once detected and damage is
prevented as the acid is prevented from passing between the lining and the shell.
We will explain the Invention with reference to the accompanying drawings the
several Figures of which illustrate in section so much of a boiler or vessel as is
necessary to shew one of the fastening arrangements in each case it being understood
that in each boiler or vessel the said fastenings are used in any desired number and
in any desired position.
According to the arrangement of our Invention shewn in Figure 1 holes A are
made in the outer shell X at suitable distances apart and strengthening rings B are
secured round each hole. The internal lining of lead C or other acid resisting
material is brought this opening A and is made to overlap some distance over the
exterior of the vessel around the hole and over the aforesaid ring. A cap or cover
lined with lead or other acid resisting material is placed over the opening and is
secured by means of a disc or cover D and studs and nuts or other suitable fastenings
not exposed to the interior of the boiler or vessel. Any leakage at the joint passes
to the exterior of the vessel and can be seen and reinedied. The cap or cover
which we have shown at D in Figure 1 is provided with a plug E entering the said
hole A which plug may be made of or be covered with lead or other acid resisting
material and there may be elastic material (as at F) between the lead or the like
which covers the opening as aforesaid and that around the hole so that as the lining
creeps it moves outwards and can readily be cut off as required. The bolts are
secured at one end to or in the shell X and at the other end are screwed and
provided with tightening nuts as shown.
The bringing of the lead through the shell may be effected by means of flanging
or collars or tubes or other suitable means the lead or the like at which any joints
occur being burnt together.

page_text: According to the arrangement shown in Figure 2 modification we bring the
lining C through the hole A in the shell X and over a strengthening ring B as before
described and we secure the said lining C by means of a plug G formed or covered
with load or other acid resisting material the bolt part being passed through the
plate D and the whole secured by a nut as shown or the plug G may be secured
by upsetting the end or in other suitable way. Or we may place on the exterior of
the boiler or vessel and over the opening through the shell X as herein before
described a metal cap H (as shown in Figure 3) with an undercut space I inside it
and this space is filled with acid resisting material and connected by burning or
fusing or by other suitable means to the internal lining these caps when fixed at
certain distances on the outer shell as desired (by screws as shewn or otherwise)
form a means of keeping the inner lining in position.
Another modification is shown in Figure 4 and consists in bringing the lead
through the hole in the shell as before described then a bolt J with its head protected
with a lead or other acid resisting covering (or the bolt itself may be of acid
resisting material) is passed through, a washer being placed under the nut so that the
lead which passes to the outside of the vessel is kept in position when the nut is
tightened up.
af.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
H1'
1. In boilers or vessels lined with lead or other acid resisting material the pro-
vision of holes in the shell through which holes portions of the lead or like lining are
passed to outside the shell and are secured by clamping or retaining devices or in
any suitable way substantially as herein before described.
2. The several arrangements and combinations of parts constituting the several
means of and devices for securing the lead or like lining to lead lined boilers or
vessels as herein before described and severally illustrated in Figures 1, 2, 3 and 4 of
the accompanying drawings.
Dated this 9th day of March 1980