In
conlrast
to
the
sealed-for-life
boll
and
needle
bearings
of
the
needle-bar
end of the
machine
which
require
no
lubrication
of all,
take-up
lever
link
z
is
lubricated from the hook oil reservoir by means of a
wick
enclosed in a tube
(Fig. 9).
:fi:
rv.i
;a.i
Fig. 9
Face
cover
removed
R
8605
Flat spring B exerls pressure on the presser foot,
Lever
C serves to retain ihe presser foot in its
highest position ofter it hos
been
raised by Ihe knee lever.
The oil supply in Ihe foam-rubber-lined reservoir x ond y for Ihe upper and lower needle bar
bushings should be replenished more or less frequently according to the time the machine is in
operation
eoch
doy.
From
the foam-rubber-lined reservoirs x and y, oil is supplied to the upper and
lower needle bor bushings (Fig. 9). The oil supply in these reservoirs should be
replenished frequently, particularly while the machine is being run in.
13
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