Moulds and Cores.
Year: 1884

page_text: Moulds and Cores.
I, ROBERT BUCHANAN, Ironfounder, Star Foundry, College Street, Dumbarton
in the County of Dumbarton, do hereby declare the nature of my said Invention for
"IMPROVEMENTS IN DRYING CHAMBERS FOR DRYING FOUNDER'S MOULDS AND
to be as follows: —
CORES
As ordinarily arranged drying stoves or chambers are heated by common fire
places in which solid fuel is burned. The drying of the moulds and cores is
unequal and the cost of fuel for firing is very considerable. As a means of
obtaining more equal drying and of effecting economy in fuel, I combine with a
drying chamber of any ordinary form, a gas producer, the gas from which I
consume within the drying chamber. The gas producer which may be of any
wellknown type may be placed within the chamber, but is by preference fired
outside, and the gas is discharged from it into an orifice leading into the drying
chamber, an air orifice being in proximity to the gas inlet to supply heated air to
ensure combustion of the gas.
The flame resulting from combustion circulates near the roof or crown of the
chamber and over the moulds or cores, and the products of combustion pass away
by an outlet near the floor.
In cases where there are several drying chambers in proximity to each other
I provide conduits to lead the gas from one or more gas producers to the series of
drying chambers, or I may provide a separate producer for each chamber.

page_text: COMPLETE SPECIFICATION.
Improvements in Drying Chambers for Drying Founders'
Moulds and Cores.
I ROBERT BUCHANAN Ironfounder Star Foundry College Street Dumbarton in
the County of Dumbarton 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 :-
As ordinarily arranged drying stoves or chambers are heated by common fire
places in which solid fuel is burned. The drying of the moulds and cores is
unequal and the cost of fuel for firing is very considerable. As a means of
obtaining more equal drying and of effecting economy in fuel, I combine with
a drying chamber of any ordinary form a gas producer the gas from which
I consume within the drying chamber. The gas producer which may be of any
wellknown type may be placed within the chamber but is by preference fired froin
the outside and the gas is discharged from it into an orifice leading into the drying
chamber, an air orifice being in proximity to the gas inlet to supply heated air to
ensure combustion of the gas.
The flame resulting from combustion circulates near the roof or crown of the
chamber and over the moulds or cores and the products of combustion pass away
by an outlet near the floor.
In cases where there are several drying chambers in proximity to each other
I provide conduits to lead the gas from one or more gas producers to the series of
drying chambers or I may provide a separate producer for each chamber.
In the accompanying drawings which illustrate my invention figure 1 is a
vertical section and figure 2 is a horizontal section of a drying chamber with which
a gas producer is combined and figure 3 is a horizontal section of two drying
chambers with a gas producer adapted for heating both.
The drying chamber A. is of the ordinary construction and may either be built
above ground as indicated or be sunk in the form of a drying pit. The gas pro-
ducer B is also of any ordinary form and in the example shown it is fitted within
the drying chamber and it consists of a fire grate b supplied with fuel through a
hopper c. The gas evolved from the fuel passes by an outlet d into a combustion
chamber e to which air is supplied through a channel f. The burning gaseous
mixture passes from the combustion chamber into the drying chamber A in which
it circulates and heats up the air within it and thereby effects the drying of the
moulds or cores which are placed in the usual way on supports on a truck or
trolly G. In the example shown in figure 3 two drying chambers A A¹ are built
alongside each other. A single gas producer B of similar form to that just described
is fitted in the line of the partition or dividing wall of the chambers A. A' and the
burning gases escape through outlets on each side of the producer into both
chambers. Dampers h are provided so that the hot gases may be excluded from
either of the chambers at any time. The producer or producers may however be

page_text: placed in any convenient position contiguous to the drying chamber or chambers so
that the gases from the producer or producers are at or near their initial temperature
when they reach the place where combustion ensues on mixing with the air.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The combination with chambers for drying founders' moulds and cores, of a gas
producer or producers fitted in immediate proximity thereto substantially as and
for the purpose herein set forth.