Bridgeport reverse trip ball lever

[FulmenParticipant @fulmen]

So mine broke, seems like a common occurrence. It was also a total nightmare to get out, another common occurrence. So I don’t have a whole part to copy, does anyone have a full drawing?

[DC31kParticipant @dc31k]

There is extensive Bridgeport documentation, which would include exploded drawings, at vintagemachinery.org

There is a Bridgeport sub-forum at practicalmachinist.com

Bridgeport is the name of a machine tool builder. Is the part you seek common to every machine they have ever built? If not, some indication of a model number would be useful.

[David George 1Participant @davidgeorge1]

Which Model mill do you have. A serial number would help. When I was an apprentice I used to machine these for Bridgeport Leicester in batches of about a hundred. The ones I machined would be fairly simple to remove as they just sat on the top of a hexagonal shaft clamped by a grub screw and a clevis pin through to connect it to the setting bar.

David

[FulmenParticipant @fulmen]

It’s the classic knee mill with the 2J head. If you had one and broken it you would know  🙂

Here’s what it looks like: https://atrumpparts.com/image/cache/data/MIll/CNC%20Bed%20Mill/E5FC/HEAD%20STOCK%20INFRASTRUCTURE%20(3)%20ASSEMBLY/10-05-67%20(2)-1000×1000.JPG

All that’s left of mine are the two balls, I’m sure I can figure out the rest but a complete drawing would simplify matters. I also need to figure out what material to use. I think I will go for a softer material than the original, perhaps a 8.8 or 10.8 bolt.

[Nick HughesParticipant @nickhughes97026]

Don’t know the quality, but at this price for 5 off, it’s worth a gamble:-

https://www.aliexpress.com/item/1005003694320738.html

[FulmenParticipant @fulmen]

It’s not really a cost issue, I’m in the middle of a job and would like it fixed pronto. Besides I’m a cheapskate  🙂

[Fulmen]

On Fulmen Said:

I’m in the middle of a job and would like it fixed pronto.

So use the photo of the part you found to scale the missing dimensions. There is adequate information there to make a very good attempt at it. That is your most pronto and most cheapskate option.

Your original request requires someone to dismantle their own machine, accurately measure the part, make and upload a drawing of it and reassemble their machine. That is neither a quick nor a cheap option if you allow that their time is equally as valuable as your own.

[FulmenParticipant @fulmen]

Well it’s quicker and easier for ME 🙂

Honestly it’s simple to do if it’s not broken. You need to remove one slotted screw and pull it out with a 4-40 bolt. But I was just hoping somebody had made such a repair in the past and kept the drawings.

No biggie, I always figure it out in the end. Except when I don’t…

[FulmenParticipant @fulmen]

This should do the trick:

 

[FulmenParticipant @fulmen]

After some measurements I increased the diameter to 6.3mm, the bore seems to be 1/4″. And it works again, except for the fact that the feed is broken so I really could have solved it with a straight pin.

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