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CHAPTER 9 SEWING MACHINES | Up
Aircrew Survival Equipmentman 2 - Aviation theories and other practices | Next
OSCILLATING TYPE SEWING MACHINES |
239.261
Figure 9-1.—The lockstitch.
reaches its highest position, the stitch is com-
assembly; the UPRISE (14) houses the arm
pleted. (See views C and D of figure 9-1.)
shaft connection belt; the BALANCE WHEEL
Now look at figure 9-2. The standard sewing
(12) is connected to the arm shaft in the
machine has four basic parts: bed, uprise, arm,
ARM (11), which operates the needle bar
and face. The BED (1) houses the linkage from
mechanism in the FACE (6) of the ma-
the safety clutch pulley to the sewing hook
chine.
9-2
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