The drive shaft from the gearbox transmitted its power through a worm and wheel to a shaft that passed vertically though the centre line of the casting; at the top of the shaft a double-sided dog clutch (operated by a very large combined selection and engagement quadrant lever on the face of the apron) moved up or down to select power surfacing and sliding feeds respectively

A 4-speed gearbox, oil-splash lubricated with induction-hardened gears running on ball-bearing-supported, hardened and splined shafts was fitted into the headstock-end cabinet plinth. Bolted beneath the gearbox was a push-button controlled electric motor fitted with 2 speeds as standard; this could be specified as a 1.3 - 0.9 HP,  2 - 1.6 HP or 3 - 1.9 HP.