Copper Boilers and other like Articles.
Year: 1889

page_text: Date of Application, 2nd May, 1889
Specification Accepted, 8th June, 1889
Copper Boilers and other like Articles.
I, LEWIS MARSHALL of First Avenue, Saville Park, Halifax in the County of York,
Commercial Traveller, 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 improved apparatus to be employed in the casting of boilers
and other like articles of copper.
Such being the nature and object of this my said invention the following is a
complete description of same reference being had to the accompanying drawings in
which
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Fig. 1 is a side elevation of the bottom "box" used in casting copper boilers as
aforesaid.
Fig. 2 is a plan view of fig. 1.
Fig. 3 is a side elevation of the middle "box" used in the manufacture of boilers
as aforesaid
Fig. 4 is a plan view of fig. 3.
Fig is a side elevation of the top "box" for purpose aforesaid.
Fig 6 15 a plan view of fig. 5.
Fig. 7 is a sectional elevation of boxes and core, in position and ready for running
in the molten copper.
According to this my invention the mould or pattern of the boiler is impressed in
the sand boxes 1-2-3 and in the bottom box 31 place a piece of wood 4 of thickness
equal to that of the metal of the boiler to be cast, the middle box 2 is next placed
in position (see fig. 8) and the core 5 is put in the middle box 2 and rests on the piece
of wood 4, next is placed the top box 1 in position, the top box 1 and the middle box 2
are clamped together by the dogs 6 and on the hollow tube or pipe 7, which passes
through the core 5, the top of which is chased, is screwed a nut 8, and cross piece 9
another nut is screwed over the cross piece 9 so that the same is held securely in
position.
It will be seen that when the top box 1 and middle box 2 are raised they carry with
them the core 5 and the wood 4 can be removed (see fig. 7) when next placed in

page_text: position as shown in fig. 8, the core 5 is suspended from the cross piece 9, the ends of
which resting on blocks 10 at each end of the box 1, and the set screws 11 are for
adjusting the position of the core 5 in the "mould " formed in the boxes 1-2—3.
The perforations 12 in the hollow tube or pipe 7 serve as outlet ways for the heated
air, when the metal is poured into the "mould."
A short pipe 13 is placed in the top box 1 which serves as a guide for the pipe or
hollow tube 7, so that the core 5 is suspended in correct position within the mould.
When the metal is cool, or nearly so the boxes and sand are removed and the
core 5 is broken up, the hollow tube or pipe 7 being turned round, or unscrewed
from the nut 14 is withdrawn, and the cast iron or other brittle grid 15 on which
the core 5 is moulded and baked is also broken up and removed piecemeal through
the outlet way 16 formed by the hollow tube or pipe 7.
I prefer to run the metal to nearly the bottom of the mould so that the metal
rises within the mould and thereby is not so hable to displace any of the sand or
to produce sand blown castings.
Having now particularly described and ascertained the nature of this my said inven-
tion and in what manner the same is to be performed I declare that what I
claim 15
The use and employment, in connection with the moulds for purpose aforesaid, of
the perforated tube 12, grid 15, bridge 9 and adjusting screws 11 and 7 for suspending
the core 5 in position within the moulds all in combination and substantially as herein
described.
Dated this 1st day of May 1889.
LEWIS MARSHALL.
By his Agent, Walter Brierley,
Town Hall Buildings, Halifax.
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