Interesting 12C

[Ultradog MN]

I answered an ad on CL for some tooling.
Went over there and met an older gent who had a lot of stuff left over from a tool and die shop he co-owned but had retired and closed the place.
When I walked into his home shop I instantly recognized his Monarch C.
Nice old machine. It was the one he kept of the several they had in their shop.
Some interesting features on it though.
First was this auxilliary shaft sticking out from the head stock. I think I've seen this device in a piece of literature somewhere.
Was this for a power compound rest?
The back end if it has the chart for the various speeds or feeds.
The other interesting thing on the lathe was the gear handles.
Notice they are not hinged. Just detents to lock them in place.
I suppose it has to do with that aux drive since if there was a drive shaft going across the front of the head stock you couldn't pull the handles out to change gears.
I snapped a couple of photos for you guys.
I didn't buy anything from him.
Too expensive for my thin wallet.
But I did spend a rather pleasant hour chatting with him so it was worth the trip to see him - and his lathe.

 

[texasgeartrain]

Pretty sure that aux shaft is for a relieving attachment:


That pic found on page 4 of a 1932 brochure here, I didn't search too many pubs though:

Monarch Machine Tool Co. - Publication Reprints - Model "C" Tool-Room Lathes | VintageMachinery.org

The pdf:

http://www.vintagemachinery.org/pubs/2103/17512.pdf

Nice explanations on post #8 and #39 on page 2:

Lathe relieving attachment

Hello all: I have been interested in learning more about relieving attachments for some time, but have not had much success finding any literature on them. I believe P&W, Rivett, Hendey and others made these for toolmakers lathes. Is there anyone out there who has a manual or parts breakdown...

www.practicalmachinist.com

 

[jlegge]

I answered an ad on CL for some tooling.
Went over there and met an older gent who had a lot of stuff left over from a tool and die shop he co-owned but had retired and closed the place.
When I walked into his home shop I instantly recognized his Monarch C.
Nice old machine. It was the one he kept of the several they had in their shop.
Some interesting features on it though.
First was this auxilliary shaft sticking out from the head stock. I think I've seen this device in a piece of literature somewhere.
Was this for a power compound rest?
The back end if it has the chart for the various speeds or feeds.
The other interesting thing on the lathe was the gear handles.
Notice they are not hinged. Just detents to lock them in place.
I suppose it has to do with that aux drive since if there was a drive shaft going across the front of the head stock you couldn't pull the handles out to change gears.
I snapped a couple of photos for you guys.
I didn't buy anything from him.
Too expensive for my thin wallet.
But I did spend a rather pleasant hour chatting with him so it was worth the trip to see him - and his lathe.

The stub is for a relieving shaft that went to a tool on the compound that milled reliefs in tools in time with the spindle rotation.