Ball Bearings --on balance wheel end of the arm shaft and hook shaft make the 150w161 light
running, quick to pick up speed and economical in the use of power.
Three-Bearing Arm Shaft --in addition to the ball bearings, two plain bearings eliminate any
possibility of vibration or noise.
Improved Stitch Regulator --instantly adjusted for from 5 to 32 stitches to the inch.
Drop Feed --produces even length stitches.
Needle and Presser Bars Supported for High Speed --two bushings for the needle bar and an extra
long bushing for the presser bar hold these parts rigidly.
Large Bobbin --reduces number of stops for changing bobbins.
Link Driven Thread Take-up --operates silently and efficiently. Oil wicks automatically lubricate
needle bar driving link and take-up.
AUTOMATIC HOOK LUBRICATION
Oil from a reservoir in the machine bed is fed from the ends to the center of the hook shaft
bearing by means of spiral grooves, from whence it enters the hollow hook shaft and is carried by
centrifugal force to a wick in the raceway.
X-Ray View of Hook Lubricating System of Machine 150w161.
Flow of Oil is Shown by Arrows.
1. It serves a double purpose, providing a constant and adequate supply of oil for the sewing hook raceway as well as for the hook shaft bearing.
2. It prevents the hook from over-heating on long runs and reduces wear, prolonging life of hook and bobbin case base.
3. It controls the flow of oil so that there is no excess to soil thread or work.
4. It eliminates oiling trouble.