C3 Worms & Wheels
The C3 was provided with a standard set of three hardened steel worms Just like it's smaller cousin the B2. They comprised of 1 start. 5 start, and 10 start, presumably the most useful sizes. The screw cutting charts provided by Pittler only mention these three sizes. The Pittler catalogues suggest that other sizes could be made to order from the Pittler factory. For some reason this C3 has seven worms. 1, 5,6,7,8,9 and 10 start.
The set of 20 wheels comprise teeth of 20,24,28,32,36,40,44,52,56,60,64,68,72,76,80,96 in five start and 24,40,72,96 in one start
Hardened Steel Worms for the Pittler C3 lathe comprising of 1,5,6,7,8,9, and 10 start
Above: the three standard worms with the addition of four non standard. Unlike the worm wheels these are made of hardened steel. They fitted on either the screw cutting spindle or the mandrel depending on whether screws or spirals were being cut.
Above: The worm wheels shown mounted on a pegboard, although the wheel spire is original equipment it's not very convenient if you want a wheel from halfway down the spire!
A Set of 20 Pittler C3 worm wheels on their original spire rod, it comprises wheels of 20,24,28,32,36,40,44,52,56,60,64,68,72,76,80,96 in five start and 24,40,72,96 in one start