Lewis 17 - Page 23

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21
70. For work on overcoats the machine must be fitted with
presser foot 13 73SA, which is adapted for handling heavy materials.
71. On extra fine tailoring we recommend using special
presser foot 405-1, 405-2 or 405-3. These feet are designed to raise
the edge of the piping sufficient to entirely cover the needle thread
under the piping, which otherwise may be visible on close examina-
tion. Foot 405-l is used for work on sack coats and light overcoats;
foot 405-2 is used for work on heavy overcoats, and foot 405-3 is used
for medium and medium heavy work.
RAISING AND LOWERING FEED POINT
72. Lewis Invisible Stitch Machines are adjusted at the factory
for properl-y feeding all kinds and weights of material which they are
designed to handle. However, there may be occasion when extremely
heavy overcoats are to be handled, garments made with thick cumber-
some seams or extremely heavy pockets and reinforcements to pass
over, which requires a slight raising of the feed point, Figure P,
73. On this class of work
the operator may find it necessary
to assist the work through the
machine by drawing the goods
from the back, and if considerable
heavy work is to be handled for
any length of time it is advisable
to raise the feed point slightly.
Figure P
74. To do this, turn the machine back on the tabie, turn hand
wheel away from you until the feed plate rests against the bottom of
the foot. Continue turning the hand wheel slowly until the feed point
has receded to its lowest position. Loosen screw LS 301 in LS 21A,
Plate 12, Page 50, and raise feed point very slightly, not more than
1/32 of an inch. Retighten screw LS 301. If feed point is set too high,
the top of the feed elevating link 46-94 will strike against feed plate,
which in turn will retard the movement of the goods.
INSTRUCTIONS FOR OPERATING & ADJUSTING
MODEL 24-12 PLAIN ·EDGE MACHINE
75. All instructions on Model 17-10 apply to Model 24-12,
with the following_ special instructions added: