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View Full Version : The 13" Tray Top lathe is back in operation



winchman
10-02-2014, 04:54 PM
You may recall the earlier thread about the carriage travel not working on the 13" Cincinnati Tray Top lathe at the school. I finally got around to fixing it today.

First I removed the lead screw so I could get to the retainers that keep the carriage from lifting on the ways. Then I put a jack under the apron to keep it from bending the clutch/brake hex rod under the apron. With the apron supported, I got some help to move the saddle to one side.

http://img.photobucket.com/albums/1003/winchman/Traytoplatherepair005_zpsfa7e57e4.jpg

It was immediately obvious that the spring pin had fallen out of the hub of the gear that drives the carriage rack pinion. Pretty much what I was expecting when it quit working. I fished it out of the oil reservoir with a magnet.

http://img.photobucket.com/albums/1003/winchman/Traytoplatherepair004_zps96af21c4.jpg

http://img.photobucket.com/albums/1003/winchman/Traytoplatherepair007_zps19eb367d.jpg

The pin was only tight in one side of the hub, so I spread it a little on one end before reinstalling it. Hopefully, that'll keep it working for another forty years. :D

DATo
10-03-2014, 12:08 AM
That model (tray top - tool room - hydrashift) Cinny is an exceptional lathe. We have four of them at work which are over a half-century old from 13 X 36 to 24 X 72 and all are still in almost mint condition, not because they aren't used, they are used a lot, but because they have been used with reverence by every machinist who has ever worked on them.

I envy you.