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Antique Gas Engine Discussion

OT-Lathe Tailstock Chuck


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  #1  
Old 03-25-2005, 12:38:27 PM
Jim Tremble Jim Tremble is offline
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Default OT-Lathe Tailstock Chuck

I found this Tailstock Chuck and the owner and I would like some info on it and the company.

Stamped into the body---J.H. Westcott's Little Giant. Double Grip. Westscott Chuck Company, Oneida, NY. USA. Stamped on the face of the chuck, #1. Other #s stamped on the face---133. 20A14.

The chuck has an MT-3 taper.

Width of opening is 13/16". This tells me it would be a 3/4" chuck.

Any info available ?????????

Thanks,

Jim
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Old 03-25-2005, 06:42:54 PM
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PaulGray PaulGray is offline
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Lightbulb Re: OT-Lathe Tailstock Chuck

Jim-- That chuck looks a lot like a tap chuck to me. You put a square end tap in there and it keeps it centered relative to the lathe axis. I have seen others which are 3-jaw. They sure are handy for holding large pieces. Personally though, I use a center and a tap wrench and tap by hand.
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Old 03-25-2005, 08:00:58 PM
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Randy Hart Randy Hart is offline
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Default Re: OT-Lathe Tailstock Chuck

Jim, I vote Tap chuck.
I was thinking about it some more and a square drive reamer chuck also fits into the picture,mabey more so than for taps.. this would allow you to drive it in the tailstock on the lathe while spinning the work in the lathe chuck..
Randy Hart Ohio

Last edited by Randy Hart; 03-26-2005 at 09:38:44 AM. Reason: another thought/ I can only handle one per day:)
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Old 03-25-2005, 08:34:44 PM
Harvey Teal Harvey Teal is offline
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Default Re: OT-Lathe Tailstock Chuck

Westcott chucks were the premiere tool chuck before the invention of the Jacobs chuck. Many fine machine tools used them, and they are still as viable as any other chuck.
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Old 03-26-2005, 11:05:35 AM
Jim Tremble Jim Tremble is offline
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Default Re: OT-Lathe Tailstock Chuck

Quote:
Originally Posted by Harvey Teal
Westcott chucks were the premiere tool chuck before the invention of the Jacobs chuck. Many fine machine tools used them, and they are still as viable as any other chuck.
This chuck works very well.

As to the tap and reamer ideas, well I had to take the jaws out and look at them. The jaw teeth are milled at 50 degrees. Not 90. This tells me it would be used for round stock and not for square sholdered material. If square stock was inserted, the pressure points would be on the bottom V of the teeth and none on the other 2 sides.

I may be wrong on this, BUT.

Thanks for your input,

Jim
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Old 03-31-2005, 11:38:33 AM
Jim Tremble Jim Tremble is offline
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Default Re: OT-Lathe Tailstock Chuck

Quote:
Originally Posted by Jim Tremble
This chuck works very well.

As to the tap and reamer ideas, well I had to take the jaws out and look at them. The jaw teeth are milled at 50 degrees. Not 90. This tells me it would be used for round stock and not for square sholdered material. If square stock was inserted, the pressure points would be on the bottom V of the teeth and none on the other 2 sides.

I may be wrong on this, BUT.

Thanks for your input,

Jim
Well, we are all correct on this. The chuck can be used for round stock up to 3/4" and taps and reamers with the squared end.

An old machinist friend (87 ys. old) looked at it and has used them in the past. There are 2 set screws in the throat bottom that lock against the flats on the tap or reamer ends. He said this is to ensure the tool does not rotate in the chuck. He also said they are as good if not better than the Jacobs Chuck.

Thanks for everyone's info.

Jim
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