Sharp 1118H Operations Manual & Parts List page 20

With carriage at rest and quick-acting handle "P" (Figure 42), forward in cutting position,
feed the desired amount for each threading pass using cross slide handwheel "R" (Figure
42).
Moe lever "G" (Figure 41), to the left and carriage will travel until it contacts stop at
headstock end of machine. The headstock spindle will continue to run. Carriage stops
cause only the gearbox, lead screw and carriage to stop.
After each pass, withdraw threading tool from work with quick-acting handle "P" (Figure
42), and return carriage to starting position by moving carriage control lever "G" (Figure 41),
to the right.
LEFT-HAND THREADS can be cut the same as right-hand with the spindle running
"FORWARD" except that cutting pass is made from the headstock toward the tailstock.
Carriage control stops are used for left-hand threads as well as right-hand threads.
A
Figure 41-Headstock and Gearbox
G
R
Figure 42-Carriage and Compound Slide
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P