Tailstock Taper

[Jack]

I've purchased a Rivett Lathe, Model #608-PV manufactured in 1951. The lathe still has the frosting on the ways and the hand wheels move like silk What I need to know is what is the tail stock taper. I set up a dial indicator on the toolpost and another on the cross slide. The cross slide was moved 1 inch and the toolpost dial indicator moved .020" worth of taper inside the tail stock. This doesn't correspond to any of the tapers listed in the Machinery Handbook . This isn't a Morse, Brown & Sharpe, ...etc. I don't know much about metalworking and this has got me stumped. Any help would be appreciated.

[SGW]

You were careful to have the indicator inside the tailstock *exactly* at center height, of course. Just checking.....

[SGW]

You got .480"/ft taper. that's just a shade under a typical B&S taper of about .5"/ft.

I'm guessing it's a B&S taper, but it could also be some weird and wonderful Rivett "special."

[Jack]

Thank You, I'm new to this so I'll go back to the lathe and set up the indicators again. This will let me purchase some tooling. Thanks again.
Jack

[farmwrench@aol]

<font face="Verdana, Arial" size="2">Originally posted by Jack:
I've purchased a Rivett Lathe, Model #608-PV manufactured in 1951. The lathe still has the frosting on the ways and the hand wheels move like silk What I need to know is what is the tail stock taper. I set up a dial indicator on the toolpost and another on the cross slide. The cross slide was moved 1 inch and the toolpost dial indicator moved .020" worth of taper inside the tail stock. This doesn't correspond to any of the tapers listed in the Machinery Handbook . This isn't a Morse, Brown & Sharpe, ...etc. I don't know much about metalworking and this has got me stumped. Any help would be appreciated. </font>

Try www.lathes.co.uk/catalogues.htm (http://www.lathes.co.uk/catalogues.htm) I found a coppy of the manuals and even blueprints for your lathe.

[toff]

Hi,
You have probably been to these sites by now:
http://www.loganact.com/tips/collet.htm
http://www.loganact.com/tips/tapers.htm
Luck
toff