Lewis 17 - Page 9

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daily as lint and dirt accumulates in the moving parts, causing them to
function improperly.
12. In cleaning the machine always remove the cover from the
head and wipe off the parts with a clean cloth. Do not use waste. By
turning the hand wheel you will see the various moving parts, bear-
ings, gears, etc. and oil holes. A few drops of oil should be placed on
these small parts daily. On ·a new machine it is necessary t<;> place a
drop of oil in back of the bobbin case race-way' every two or three
hours. The hook shaft shoulcl be oiled through the hole inthe casting
to the right of the hook. A drop of oil well placed will do more good
than ten drops that do not reach the parts requiring it.
.•
13. Besides thoroughly oiling th.e head mechanism it is also ~ ·
necessary to lubricate the plunger and feed mechanism. The feed
mechanism will be found in the bed of the machine immediately be~ow
the presser foot. This mechanism may be uncovered by removing the
work plate, or by turning the machine back on the hinges.
14. On all types of machines there are movable parts that
require oiling near the base, immediately below the hand wheel. By
turning back the machine, several movable parts 'will be found in the
base, all of which require daily lubrication. ·
15. It is also necessary to oil the machine at the top underp.eath
the plate near the hand wheel Figure 0, Page 20.
16. · See that thefeed points (Figure P-) Page '21 are cleaned
every day to avc;>id lint accumulating. Accumulation of lint in the feed
poi:n:ts will cause the machine to feed improperly.
SPEED
. . 18. Le~is Model 24-12 can be operated from 90G t~"~~-~-~-~]
stitches per mlnute. • . . . r·J
NEEDLES
19 .. Nee~les for Lewis Invisible Stitch Machines are furnished
in all necessary sizes with either a taper point or a ball eye. Taper