Segmented rod for syringe filler.
Extends a 3 piece rod. Stores under short blind cap.
Wallace Pen Co., Columbia S.C. was part of the Ink-o-graph pen company. This example is high quality pen with a branded nib and a good quality feed. It lists a patent by J M Wallace US 1509008 issued in 1924. The pen is a syringe filler with a double telescoping rod. The rod extends and then locks open by twisting clockwise to engage a pin in the small right angle at the end of the groove in each segment (bayonet style). This allows the piston to reach all the way to the section. After retracting, a rotation the opposite direction lines up the grooves and pins and the rod can be collapsed to become short enough to sit under a rather ordinary sized blind cap. Similar to the unusual Reform pen with telescoping piston.
