Singer Class 269w - Page 10

TO TIME THE STOP MOTION
Trip points X and W, Fig. 25, page 8 force pawl
A2,
Fig. 28, page 9 out of engagement with starting
bell crank 82, Fig. 28, thereby bring recoil mechan-
ism into action to stop machine.
Trip Point X - determines when machine will enter
stop position -
To adjust, bring starting lever F3, Fig. 27,
page 8 forward unti I pawl A2, Fig. 28 drops into
first catch C3. Then set trip point X, Fig. 25 so
that, when rotating machine by hand, starting lever
F3, Fig. 27 will drop bock against fixed pulley
N3, Fig. 27 just after interlocking notch M3, Fig.
27 has passed interlocking arm K3, Fig. 27.
Once properly adjusted, trip point X will not
require readjustment except when feed cam is re-
timed.
Trip Point W - determines speed at which machine
enters stop position -
Trip point W will usually require readjustment
whenever the machine speed is changed.
Excessive speed when entering stop position
will cause rapid wear and breakage of recoil mechan-
ism. Therefore, on a machine not equipped with a
brake, check the trip point W often, for as machine
wears in and runs more freely, it will require a
longer coast period.
Adjust trip point W so that machine consistently
enters stop position at minimum speed when sewing
heaviest part of material.
TO INSTALL THE STOP MOTION BRAKE
Remove starting rod adjusting screw H3, Fig. 29,
page 9. Position brake bracket E4 as shown in
Fig. 32 and secure bracket to starting rod with
screw A4. Insert small end of spring support 84 into
small end of spring C4. Insert screw 04 through
bracket until it enters spring support 84. Continue
to turn in screw 04 until tension is applied to spring
C4.
10
04
G4
Fig. 32. Stop Motion Brake
Move starting lever G4 into running position.
Loosen lock screw H4 and turn adjusting stud (ec-
centric) J4 until the brake lining K4 clears the
fixed pulley by approximately 1/32 inch. n --
tighten lock screw H4.
Remove trip point W, Fig. 25, page 8. Run ma-
chine and adjust for correct tension on spring C4,
Fig. 32 by turning screw 04 until interlocki{lg arm
K3,
Fig. 27, page 8 enters the stop notch quietly.
Then tighten lock screw F4, fig. 32.
NOTE: As the brake surface becomes glazed
by use, it may be necessary to readjust the tension
on spring C4.
CAUTION: Brake lining must be kept free of oil.
From the library of: Superior Sewing Machine & Supply LLC