Lathe Carriage Stop Revisited

[Toolmaker51]

I want to know if you have a hard stop attached to the way, does the carriage pop the split nut open and disengage from the lead screw? I have an old SB 9C and I am not about to try and crash it into a hard stop to find out....

Oh yeah, the carriage will split the half nut open all right...once!

Hard stop = manual use only.
No bedway clamps have the means of disengaging feed rod or lead screw, normally. There are a few, MoriSeiki, Okuma and others, typically larger lathes with movable cams that trip a detent extending from bottom of carriage. Some locate on rigid cast drip pans, others use a manually indexed rod below whatever feed, lead, and clutch shaft. Those only function to halt the feed of carriage along ways.

Here on HMT.net, a very creative member 'gatz' posted his ultra positive threading kickout, pneumatic no less, astounded all of us. Perfect threading right up to a shoulder, at real RPM's. It would easily function feed-wise if reoriented to trip feed lever.
http://www.homemadetools.net/forum/l...t-set-up-68878