Improvements in the Apparatus for Drying Moulds and Cores for Castings.
Year: 1897

page_text: Date of Application, 26th Oct., 1897
Complete Specification Left, 4th June, 1898-Accepted. 23rd July. 1898
PROVISIONAL SPECIFICATION.
Improvements in the Apparatus for Drying Moulds and Cores for
Castings.
WILLIAM LITTLETON, 22, Werndee Road, South Norwood, London, S.E., in the
County of Surrey, Mechanical Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
The object of this invention is to provide a simple portable apparatus for drying
all kinds of moulds and cores either of green sand or loam.
By reason of the extreme lightness and portability of this apparatus, it can be
applied readily and direct to the mould or cores in any position thereby obviating
the necessity of removal from the positions in which they are made ready for
casting.
This method will thereby effect considerable saving both in time and labour as
well as reduce the risk of injury to the moulds arising from the use of fire buckets
or devils placed upon the open moulds for drying.
Considerable economy will also be due to the great advantage of drying by the
use of heated air at a uniform temperature blown through the moulds and cores
by a fan thereby expelling the air after taking up the moisture from the moulds
rapidly.
The apparatus consists of a chamber into which is fixed an atmospheric gas
burner. The air inlet connected to fan by a flexible pipe and regulated by a
valve.
The gas inlet is also connected to the gas main by a flexible pipe and the supply
regulated by a valve.
Air is also admitted to the chamber through perforations above the outlet of
the burner, by which means the heated air is properly attemperated to suit the
varying conditions of the moulds or cores to be dried.
Dated this 26th day of October 1897.
Improvements in the Apparatus for Drying Moulds and Cores for
Castings.
WILLIAM LITTLETON, 22, Werndee Road, South Norwood, in the County of
Surrey, Mechanical Engineer, do hereby declare the nature of this invention and
Price 8d1

page_text: .
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 simple portable apparatus for drying
all kinds of moulds and cores either of green sand or loam.
By reason of the lightness and portability of this apparatus it can be
readily applied direct to the mould in any position and thereby avoid the necessity
of removal from the position in which the moulds are made ready for casting.
The use of this apparatus will thereby effect much saving in time and labour,
also reduce the risk of injury to the moulds arrising from the use of fire buckets
or devils placed upon the open moulds. The apparatus requires no attention and
is free from dust or dirt owing to the use of gas as fuel. The temperature of the
heated gases blown through the moulds can be readily adjusted to suit the con-
dition of the moulds or cores being dried.
Fig. 1 of the drawing herewith shows a vertical section of the apparatus.
Fig. 2 shows an horizontal section through gas inlet D.
Fig. 3 shows the application of the dryer to the mould of a pipe made
horizontally.
The apparatus consists of a cylindrical chamber A into which is fixed a powerful
air pressure gas burner B.
The main air inlet C connected by a flexible pipe to the air supply, which may
be taken from a blower or fan as used for blowing a foundry cupola, the necessary
amount of air regulated by a valve or gate. The gas inlet D also connected by
a flexible pipe to the gas supply and regulated by a cock or valve.
The velocity of the air through the burner B should not be less than equal to
support a column of water 14 inches high, in order that by induction a considerable
quantity of air shall be carried through the holes or appertures E in the chamber A.
By these means a duplex air pressure gas burner is formed ensuring good com-
bustion and large volume of heated gases available for drying.
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:
1. An arrangment of portable duplex air pressure gas burner as described by
which gas is burned in the cylindrical chamber A.and the volume of heated gases
increased by the admission of air through the holes or appertures in the chamber A.
2. The use of gas as fuel in the arrangment described, to ensure uniform
temperature under controle and freedom from dust or dirt.
Dated this 4th day of June 1898