A multiple orifice glass feed system for use with a glass forehearth
including a plurality of closely spaced plungers, each of which is
individually supported independently of each other. Each plunger includes
a servo controlled linear actuator and an arm extending between each
plunger and its respective servo-motor. Each servo-motor has an axis
parallel to the axis of the plungers. An air spring is associated with
each plunger for balancing the weight of each plunger and its respective
arm. The center lines of the plungers lie generally in a plane. The arms
have the major portions thereof generally parallel and closely spaced. A
feedback system is provided to monitor the position of each individual
needle independently of the other at all times and make corrections to
the actual position of the needle if desired.