IMPROVEMENTS IN MACHINERY FOR MOULDING TOOTHED WHEELS
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Samuel Buckley and James Taylor
at the Office of the Commissioners of Patents on the 3rd April 1879.
SAMUEL BUCKLEY and JAMES TAYLOR, of Castle Iron Works, Oldham, in the
County of Lancaster, Engineers. "IMPROVEMENTS IN MACHINERY FOR MOULDING
TOOTHED WHEELS."
Our Invention relates to machinery for moulding toothed wheels where a portion
only of an entire wheel pattern is used; and its object is to so arrange, combine, and
construct the mechanism for this purpose that it can be readily arranged together
in either of two forms, that is, so that when the parts are put together in one form
the smaller sizes of toothed wheels can be moulded in a box carried round by a turn
table, the pattern being stationary when in use except as to up and down move-
ment, and so that when the parts of the moulding machinery are put together in
the other form large wheels can be moulded, the mould being stationary in the floor
of the foundry while the pattern is carried round on an arm secured on the turn
table, and by this means moulds for small and large wheels can be accurately made
by the same machinery, thus obviating the necessity for and saving the cost of two
separate machines.
Our Invention consists in the combination, arrangement, and construction of
mechanism having the double object above explained, namely
There is a bed formed of stone or other material, or of iron, and upon this bed a
slide-way bed is secured, or the bed and slide-way bed is or may be one piece.
The slide-way bed is planed and is fitted with a screw to screw into a nut in a slide
moving upon the slide-way bed. This slide forms the lower part of a jib which is
planed to receive a vertical slide-way that can be readily attached to or detached
from the jib, being secured thereto by screws. The vertical slide-way has slide
ways in it for a vertical slide, to the lower end of which the portion of the pattern
of the teeth to be moulded is secured.
This vertical slide is moved up and down by a rack and pinion on a shaft actuated
by a shaft worm and worm wheel, and the vertical slide is balanced by means of a
weight attached to a chain passing over a pulley having supports from the vertical
slide-way.
The side of the slide-way bed for the jib is planed to fit a planed surface on the
side of the base part for the table, and the two can be readily bolted together or
detached.
This base part for the table is turned to accurately fit turned parts on the table
which is turned up true, and upon the underside of the table a truly turned rim is

page_text: secured by set screws, this rim having worm teeth in it which geer with a worm on
a shaft having bearings in the bed of the turn table.
On the end of this shaft is a wheel which geers with other wheels forming change
wheels, and with a wheel on the end of a shaft also having bearings in the turn
table bed, which shaft at its other end has bevel wheels to geer with a vertical
shaft in bearings on the bed upon which is the handle for rotating the shaft and
thus turning the table after each moulding operation.
All the parts above described are used when forming moulds in boxes on the turn
table, and excepting the base bed slide-way and jib, the same parts are also used,
with the addition of a slide arm and centre base for the table, for moulding large
wheels in the floor of the foundry.
For this latter purpose there is a circular base part turned and bored true, and
sunk in the floor of the foundry. This base part forms a centre for the trammel
used for levelling the sand; then the base of the turn table, together with the
table, is placed upon the centre base part in the floor of the foundry, and a slide-way
is secured on the table, a pin in the slide-way fitting a hole in the table to securely
centre it thereon.
In the slide-way an arm is fitted to slide in and out, in which slide there is a
screw that screws through a nut in the slide-way so that by turning this screw the
arm may be adjusted to the required radius of the wheel.
In the arm there is a hollow for a shaft or bar that can be drawn out or pushed
in and then secured by a screw, this bar acting as an adjustable balance weight.
It is or may be moved in and out by a rack and pinion or other suitable means.
The arm and slide-way are all connected, and are therefore carried to and secured
upon the turn table at the same time.
The end of the adjustable arm is planed to receive the slide-way hereinbefore
described as attached to the jib, and this completes the mechanism for moulding
large wheels.
Thus it will be seen that the principal parts are used in one arrangement for
moulding large toothed wheels in the floor of the foundry, and in the other arrange-
ment for moulding small wheels in boxes on a turntable, and one form or
arrangement will begin to mould wheels at the largest size where the other leaves
off, so that the two forms will mould from small up to the largest sizes required in
this process of moulding.