Improvements in the Manufacture of Metallic Wheels and in the Moulds to be used in the said Manufacture.
Year: 1897

page_text: Date of Application, 5th Oct., 1897-Accepted, 1st Jan., 1898
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Metallic Wheels and in the
Moulds to be used in the said Manufacture.
I, JAMES SOUTHWICK of Glascote Road Tamworth in the County of Stafford
Engineer and Iron Founder do hereby declare the nature of my said 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 has for its object improvements in the manufacture of metallic
wheels and in the moulds to be used in the said manufacture and relates to the
nave or boss whereby great accuracy of the wheel is secured and great hardiness and
consequently durability is obtained in the parts. I am also enabled to materially
reduce the cost of manufacture.
In order that my invention may be clearly understood and easily carried into
practical effect I have appended hereunto a double sized sheet of drawings upon
which I have shown examples of my improvements.
Figure 1 is a part sectional view shewing the nave or boss of my wheel and a
portion of the spokes in the mould after casting.
Figure 2 is a similar view to Figure 1 on a reduced scale shewing the whole of
the device in which the same is fixed.
as
In carrying my invention into practice I attach the ends of the spokes S to the
rim R by rivetting and the rim with its spokes is fixed in the chucks A and B
which are mounted on the base D. These chucks are formed so that the device
will suit various sized wheels by turning the screws a' and which operation
moves the chucks either outwards or inwards according to the diameter of the
wheel. Before the rim with its spokes is placed in position I fix the chill E,
which forms a portion of the mould in position in the base, and fixed centrally
in this chill by means of the nut e' is the movable core or metal centre or chill
which forms the central bore of the nave or boss. The rim with its spokes is then
fixed in the chucks and the loose ends of the spokes which are
enlarged at l
the boxes H and H,
are then placed in position in
the moulds for forming the boss are then placed in position and these
moulds which
formed of sand
are
constructed and arranged
aro
follows. The chill E which forms the mould in which the lower part of the
boss is placed is formed so as to taper and the other or centre portion of the mould
which is formed in the box H is formed, when there are sixteen spokes or arms,
in eight segments which fit onto the top of the chill E or lower mould so as to
enable the caster to easily fix the mould in position. Then the next portion H¹
of the mould is placed onto the top of the eight segments thus covering in both
sets of arms or spokes a core for forming the space J is then placed in position,
and lastly the top portion of the mould is fixed in position thus forming the com-
plete axle. The space or recess J formed by the core is made for the purpose of
holding
lubricant so alys itio
or receiving the
always keep the
thoroughly lubricated. The sand is rammed in each part of the
is placed in position and the
is lastly placed in
mould
box
H2
as
axle

page_text: position.
These mould boxes are held together by the pins h³ which
pass through the lugs formed on the sides of the boxes. The centre core F
is made hollow or has a hole formed centrally from end to end so as to allow the
air to escape when casting the boss or nave. I also form the air vents K in the
sides of this core to allow the air to escape from the oil recesses L. These oil
recesses are formed so as to contain lubricant for always keeping the axle
thoroughly lubricated.
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:-
CLAIMS.
FirstCasting the metallic boss or axle onto the arms or
by forming the central metallic core and fixing the same axially in the mould, the
spokes of a wheel
said metallic core being provided with a central bore or air vent in the manner
substantially as described and shewn.
Second: In casting the metallic boss or axle onto the arms or spokes of a wheel
forming the central metallic core with a central bore or air vent and the side bores
or air vents communicating with the central air vent in the manner and for the
purpose substantially as herein set forth and shown.
Third: In a cast metallic boss or axle forming one or more oil spaces in the
interior in the manner substantially as herein set forth and shown.
Dated this 4th day of October 1897.
GEORGE
BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.