Improvements in the Manufacture of Cast Iron Ovens and other similar Castings Exposed to the Action of Fire.
Year: 1890

page_text: Date of Application, 28th June, 1890
Complete Specification Left, 26th Mar., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cast Iron Ovens and other similar
Castings Exposed to the Action of Fire.
I, ALFRED JEPSON, of Arcade Chambers, St. Mary's Gate, Manchester, in the
County of Lancaster, Wood Engraver, do hereby declare the nature of this invention
to be as follows:-
My invention relates to improvements in the manufacture of cast iron ovens and
other similar castings exposed to the action of fire, and the chief object of my
improvements is to obviate cracking and to prevent any possibility of flame or
smoke from the fire passing into the interior of the oven which is now frequently
the case with cast iron ovens of the ordinary construction when they become
cracked.
In applying my improvements to the manufacture of say a hexagonal oven I
propose to form a core of wrought sheet or plate iron and to cast the metal around it.
This wrought iron core preferably extends only over the bottom and two sides of
the oven, but it may extend to the back or top or both, the door or sixth side being
formed separately as usual.
In this manner I obtain an oven the protected sides of which cannot be cracked
by heat and consequently smoke or flame cannot possibly pass through them into
the interior.
Dated thin 27th dor of Tune 1800
H. B. BARLOW,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Cast Iron Ovens and other similar
Castings Exposed to the Action of Fire.
I, ALFRED JEPSON Clare Villa Central Road of Withington in the County
of Lancaster Wood Engraver 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 improvements in the manufacture of cast iron ovens,
and other similar castings, such as kitchen boilers, wash-house boilers, and the like,
which are exposed to the action of fire.
The object of my improvements is to obviate cracking or fracture caused by heat
from the fire, and thus to prevent the possibility of flame or smoke passing into the
interior of said oven or other like casting, or leakage from a kitchen boiler or other
similar cast vessel used for containing fluid.
I attain the object as above set forth by the means hereinafter described, and as
illustrated in the accompanying sheet of drawings: in these drawings similar letters
refer to similar parts throughout the several views.
In applying my improvements to the manufacture of say a hexagonal oven or
other rectangular casting, I form a core of wrought sheet or plate metal as
represented in Fig. 1. Fig. 2 is a section of the same on line A. A. I perforate
this core either in the manner shown, or as may otherwise be preferred. This
wrought metal core is formed to extend only over the bottom and two sides of the
oven a, but it may in like manner extend to the back, or top, or both, the door or
side required to open being formed separately.
Fig. 3 represents an oven with said wrought or sheet metal core
occupied after the metal forming the oven has been cast around it
in the position
by means of the

page_text: projections c formed by the perforations d, the core is retained in position in the
sand so as to permit the metal during the process of casting to flow equally all
around each side of said core, and at the same time pass through the perforations,
thus uniting the interior and exterior portions of the casting so as to form one
casting.
Fig. 4 represents a hollow casting with a circular or dome shaped bottom a¹ such
as a wash-house boiler in which the wrought or sheet metal core b is applied in the
manner herein before described at the part which is mostly in contact with the fire,
extending up the sides of said boiler to any preferred height: the construction of the
core and the mode of casting being similar to that hereinbefore described.
Other and various forms of hollow castings may also be made in like manner.
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 I
claim, is,
In the manufacture of cast iron ovens and other similar castings exposed to the
action of fire, the introduction of a wrought or sheet metal core in any or all
of the sides, ends, or bottoms of said castings for the purpose and in the manner
substantially as herein before described.
Dated this 24th day of March 1801
ALFRED JEPSON,
Applicant.