Jacot Fixture….

[tmac1956]

All:

I’ve seen several members on the forum who have made these, so I thought I’d give it a try. Hopefully, I can use it for various tools.

Parts list:
Small wooden cutting board
Variable speed low RPM electric motor (39 rpm at 6 volts and increases at higher voltage setting)
Motor bracket
4 – Rubber feet
1/4″ thick aluminum plate
4 – 3/8″ diameter bolts, nuts, and washers
4 – 1/8″ diameter bolts, nuts, and washers
1″ diameter plastic pulley (tension fit to motor shaft)
2mm thick weldable plastic belt – I’ll order some O-rings to replace it

Images:

(continued…)

[tmac1956]

continued…

Video Link:
https://youtu.be/xmt8bfrZpWs

Later,
Tom

[stevefitzwater]

Nice, I have been having some issue with my Jacot tool, and I am looking for a solution. When servicing American Pocket Watches, the pivots on the train are to big to use in the Jacot tool, well at least the one I have, so I think I will make two or more of the pivot with larger openings

[tmac1956]

Steve:

For the bigger pivots/shafts on the drive gears, I use a balloon chuck that goes into the lathe headstock (Levin made a pair for large and small watches). If you’re just polishing up the bearing surfaces, these work great.

Thanks,
Tom

[stevefitzwater]

thanks, I will look for a set of them

[tmac1956]

Steve:

I had a senior moment in my last post. These are called “balance” chucks. Here’s one on eBay.

http://www.ebay.com/itm/Watchmakers-LEVIN-Balance-Chuck-/252151242269?hash=item3ab5629e1d:g:e8YAAOSw3ydVpGy6

I hope this helps.
Tom

[tmac1956]

Uncle Larry has one too.

http://www.execulink.com/~lfoord/3233a.jpg

Tom

[tmac1956]

All:

I finally got an O-Ring belt that fits, so I put together this little video of the contraption in use.

https://youtu.be/OkWAQbhfeKk

Thanks!
Tom

[Bob Tascione]

Cool video Tom!
Really nice setup.
Now that’s background music that brings back a few memories.
Thanks,
Bob

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