Tool to remove the Brown and Sharpe Taper (BS Removal Tool)

This morning's project was to make the tool to remove the Brown and Sharpe taper on my Gorton 9J mill.
The first project was to make a 12TPI left handed nut. That was interesting as there was no way to
test fit without multiple set ups. After that was accomplished, I fabricated a washer of sorts for the
draw bar to push up on and dislodge the taper. The washer is held on with 4 1/4 inch Allen Head cap
screws. Not knowing what the tool was supposed to look like made this a bit challenging along with
the fact that left hand threads in a blind hole didn't seem easy to do.

This tool just threads on by hand and when the draw bar is loosened, it pushes down on the taper
and dislodges it. I thought it worth my whiile to make this so one doesn't have to beat on the draw bar
and bearings.

Here's a couple photos:



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My guess is that you use this tool and remove it when done using it...

wonderful ingenuity!

Great job.

The one on my Wells Index, is just a small cap type thing. It always turned what seemed to me as too hard, until I noticed the parts list also shows a washer between the drawbar, and the cap. I had to turn one down to fit inside, It made a world of difference.

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Superburban said:

Great job.

The one on my Wells Index, is just a small cap type thing. It always turned what seemed to me as too hard, until I noticed the parts list also shows a washer between the drawbar, and the cap. I had to turn one down to fit inside, It made a world of difference.




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Click to expand...

Thanks for posting. Your pictorial was very helpful. Yes, I can see that a thin washer under the draw bar would be beneficial.
The BS remover tool I made is just threaded on by hand and unscrewing the draw bar applies the pressure. No wrench
needed on the removal tool. I apply the spindle brake and turn the draw bar counter clockwise to remove the taper.

cathead said:

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Thanks for posting. Your pictorial was very helpful. Yes, I can see that a thin washer under the draw bar would be beneficial.
The BS remover tool I made is just threaded on by hand and unscrewing the draw bar applies the pressure. No wrench
needed on the removal tool. I apply the spindle brake and turn the draw bar counter clockwise to remove the taper.

Click to expand...

You have the idea exactly. Took me awhile to grasp the concept on what was going on. The drawbar would turn freely for a turn or two, then get hard again. Not knowing anything about mills back then, I was afraid I was doing something wrong.