Monarch 6 Series - Apron Control Lead Screw Reverse

6
0 P E R A T O R S
MANUAL
where a similar lever is attached to the control
rod. (E) is the carriage power feed and traverse
control lever which, when pushed downward,
causes the carriage to move at the preselected
feed either toward the headstock or the tailstock .
Lever movement to the left gives traverse to-
ward the headstock and to the right traverse to-
ward the tail stock. Cross slide power feed and
traverse control lever (F) when pushed down-
ward , causes th e cross slide to move at the
preselected feed either toward or away from the
operator. Lever movement to the right gives
traverse in and to th e left traverse out.
NOTE: When using levers (E) and (F) it is un-
necessary to apply a great amount of
pressure. If they do not engage about
half way down, they are in need of ad-
justment.
Feed directional knob (G), has three positions.
In the in position the c arriage feeds toward the
tails tock and the cross slide feeds in. When in
the out position , the carriage feeds toward the
headstock and the cross slide feeds out . In neu-
tral, the feed directional knob permits engage-
ment of the half-nut.
If threads are to be ch ased , the carriage is en-
gaged to the leadscrew by means of half-nut con-
trol lever, (H). It is illustrated in its disengag-
ed position and should be straight down for full
engagement. Always have knob (G) in its neutral
position before attempting to engage lever (H).
When lever (H) is partly or fully engaged, lever
(E) cannot be engaged. This is a safety feature
intended to prevent damage to the lathe should
the operator inadvertently attempt to engage
lever (F) while lever (H) is also engaged.
Thread chasing dial (J), which has four gradua-
tions 90 ° apart, is used for determining when to
engage the half nut during thread chasing opera-
tions . On any even thread where the lead being
chased is divisible by four the half nut may be
engaged at any point without reference to the
dial. For any full number of threads such as
18 , 22, 23 and so on (not divisible by four) the
half nut may be engaged at any one of the four
graduations. When chasing half threads such as
5-1 / 2, 6-1 / 2, 13-1 / 2 the half nut may be en-
gaged at any two opposite graduations -- No. 1
and No. 3 or No. 2 and No. 4. The chasing of
quarter threads such as 2-1 / 4, 3-1/4, 5-3 / 4
requires that the half nut be engaged at the same
graduation each time.
(K) is the carriage locking stud, used to lock
the carriage to the bedways when cutting with
the cross slide.
Tailstock pickup plunger (M) engages a bushing
on the tailstock base and allows positioning of
the tailstock by means of the apron power rapid
traverse.
A safety clutch (L) is provided in the power rap-
id traverse mechanism to prevent damage should
the carriage or cross slide be locked in position.
To adjust the safety clutch , loosen set screw
locking outer collar and rotate clockwise to
tighten. Adjus t tight enough to ratchet when
c arriage is clamped.
Depressing button (N) frees the direct length
reading dial (O) so th at it may be set to zero .
The plain apron without power rapid traverse
(Figure 6) is similar to the one shown in Figure
5. However , levers (A) and (B) give only power
feed, and no direct length reading dial is pro-
vided as standard.
FIGURE 6
Front of Apron Without Power Rapid Traverse
APRON CONTROL LEAD SCREW
REVERSE
Leadscrew reverse lever (I) Figure 5, is found
on the apron on Toolmaker's models only. Con-
trol of leadscrew reverse from the apron is
particularly . convenient during thread chasing
operations -- for example, chasing threads with
odd leads where the half nut should not be dis-
engaged ; speed chasing of short threads, and,
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