7
fit is maintained by the ‘gybe’ strips set in the front edge of the
compound slide. There is a scale set on the front of the circular base to
enable the angle set on the compound slide to be measured.
Compound
slide
control handle
A ’U’ handle, mounted on a shaft that is anchored into a housing cast at
the Control Handle end of the slide; the shaft is threaded and is engaged
in a fixed thread follower on the circular mounting plate, enabling the
slide to be driven backward and forward along its axis. There is a
graduated ring (thimble) on the neck of the handle to allow the
movement of the slide to be measured.
Tool post
locking
handle
The central locating pivot for the tool post has a threaded end which
passes through the tool post, and is fitted with a threaded boss lever
handle. Tightening down on the handle clamps the tool post firmly in
position.
Tailstock clamp A nut and bolt fitted through the tailstock and clamping dog.
Tightening the nut pulls the clamping clog up against the underside of
the bed and clamps the tailstock in position. Conversely, loosening the
nut releases the bolt and the clamp allowing the tailstock to slide freely
on the bed.
Tailstock offset
screws
The tailstock is keyed into a large support base, and is able to be driven
backwards and forward across this base about the central axis of the
lathe. There are two opposing screws set in the base that control the
movement of tailstock, the screws have to be adjusted sequentially, i.e.
loosen, tighten, loosen, tighten, etc., to move the tailstock.
Gear change
levers
Two levers marked “A” and “B” which, in their setting select the different
spindle speeds of the lathe. Refer to the Speed change chart to select
the required speed.
Chuck safety
cover
A clear acetate cover mounted on a pivot bar on the rear top front face of
the headstock. It can be tipped out of the way to access the chuck when
It is stationary, and repositioned over the chuck during operation.
On and off
switches
Green push button switch marked ‘I’ to start the motor, red push button
switch marked ‘O’ to switch the motor off.
Feed speed
and
thread cutting
gear change
chart
This chart indicates the necessary gears and their positions to enable
the wide range of metric, imperial, module and diameter threads to be
cut and the different feed rate to be achieved. The feed speed is quoted
as a linear distance along the Main Axis per revolution of the leadscrew.
Reversing
switch
Rocker switch set under a protective cover, (to prevent inadvertent
operation), changing the position of the switch will reverse the direction
of the motor. MAKE SURE THE SPINDLE IS STOPPED BEFORE
OPERATING THIS SWITCH.
Spindle speed
change chart
This is indicates the position of the levers to select the various spindle
speeds.
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