46" SICKLE BAR (Mfr. No. 990210)
Will cut 1.2 acres per hour in high gear at half throttle. This attachment has many features found only on more expensive sickle bars. Side mounted between front and rear wheels. Extremely rugged and requiring only a minimum of maintenance, the unit makes short work of heavy growth even over rough terrain and steep slopes. A unique mounting arrangement allows attachment in minutes, without tools, keeps vibration to a minimum. Mows from near vertical position to 40 degrees below horizontal. A spring mechanism protects knives from obstructions; recouples without operator dismounting. Requires 990211 center mounted power take-off. Shipping weight 122 lbs.
Source: 1962 Simplicity Lawn and Garden Power Equipment product catalog, courtesy of John Boesch (loan of original) and Steve Johnson (color photocopy)