South Bend Workshop Lathe Aprons
Plain Apron Used on Model C Workshop Lathes
Model C lathes have a plain geared screw feed apron.   Power longitudinal turning feeds either right hand or left hand are obtained by engaging the half-nuts on the right side of the apron with the lead screw.
 
The large hand wheel on the left side of the apron may be used for hand turning feeds and for moving the carriage along the lathe bed.  A carriage lock bolt  prevents it from moving while facing or cutting-off.

 

apron2.jpg (33259 bytes)
Cross feeds on this apron are hand operated with a large steel ball crank, which makes it easy for the operator to turn the cross feed screw with a uniform motion, resulting in smooth facing cuts.
Automatic Apron for Models A and B
The full automatic apron supplied with all Model A Quick Change Gear Type, and Model B Plain Change Gear Type South Bend 9-inch "Workshop" lathes is equipped with a powerful worm drive and friction clutch for operating both the automatic power cross feeds and the automatic power longitudinal feeds.  The friction clutch drive permits engaging or disengaging instantly either the power cross feed or power longitudinal feed.
The feed change knob on the front of the apron has three positions:  top for the automatic power longitudinal feeds; center for a neutral position; and bottom for the automatic power cross feeds.  It is impossible to engage both feeds at the same time.

The power cross feeds and power longitudinal feeds are both operated by a worm which is driven by a spline in the lead screw.  The threads of the lead screw and the half-nuts are used only when cutting screw threads.  An automatic safety interlock prevents engaging the power carriage feeds while the half-nuts are in use.
Headstock Apron Change Gears
Workshop Lathe Catalog Numbers Workshop Lathe Specifications
Parts Department Service Home