Champion Forge Drill Press Jacobs Chuck Threads?

rodknocker · Jan 29, 2012

My goal is to fill my garage with old American made tools and get rid of the off shore ones. Today I picked up this hand crank Champion Forge drill press. Here's a video I found of one being used, once I saw it I was hooked.

. My question is is there a finer thread than 1/2"-20 ? the chuck on it is very out of round and needs replaced, so I tried to swap my ryobi 1/2 chuck of of my drill press which I know is 1/2-20 but it wasn't happening, and I didn't want to booger up the threads by forcing it. Does anyone know what possible thread pitch I have, and where can I get a good American made chuck? Here a pic of the threads

rsanter · Jan 29, 2012

Use a thread pitch gauge

Bob

Outlawmws · Jan 29, 2012

Or slap a finer bolt thread up against it until you get a match. (poor mans thread gauge)

ndnchf · Jan 30, 2012

I too have a Champion Blower and Forge hand crank, but your's must be newer than mine. On mine the quill and chuck are machined as a single piece and it only takes 1/2" shank bits.

Definitely check the threads with a thread gauge. There is a National extra fine thread that is 1/2"-28. But I doubt you'll find a chuck in that size.

rodknocker · Jan 30, 2012

ndnchf said:
I too have a Champion Blower and Forge hand crank, but your's must be newer than mine. On mine the quill and chuck are machined as a single piece and it only takes 1/2" shank bits.

Definitely check the threads with a thread gauge. There is a National extra fine thread that is 1/2"-28. But I doubt you'll find a chuck in that size.

I'm thinking that the chuck shaft may not be original.My drill is slightly different than yours, that thread size does make sense though. I'm going to try to get home and check it at lunch.

larry_g · Jan 30, 2012

While your there get a picture of the chuck you have. Is it the old style that has the chuck fingers riding on the end of the spindle, like the one that you have in the utube?

lg
no neat sig line

ndnchf · Jan 30, 2012

I wonder if your drill started out like mine, but someone cut off the original chuck and threaded it for a more modern chuck. It may have seemed like a good way to modernize it 50 years ago.

What model is yours? Mine's a model "4-1/2"

rodknocker · Jan 30, 2012

The thread pitch is 1/2-24, sorry I didn't get the picture of the original chuck. It looked like a spped chuck with 2 holes in the top of it. After searching the internet for awhile it looks like what I'll have to do is buy a 3/8" mount chuck, drill it out and tap it to 1/2-20. Not the end of the world I guess.

Outlawmws · Jan 30, 2012

rodknocker said:
The thread pitch is 1/2-24, sorry I didn't get the picture of the original chuck. It looked like a spped chuck with 2 holes in the top of it. After searching the internet for awhile it looks like what I'll have to do is buy a 3/8" mount chuck, drill it out and tap it to 1/2-20. Not the end of the world I guess.

You mean 1/2-24 don't you?

Is the spindle as simple as it looks in the pics? If so, can you make or have a another made?

larry_g · Jan 30, 2012

When I need a chuck for my old Champion DP I found a hand drill like pictured and moved the chuck to the drill press. So keep your eye open for a hand drill. If you get one with a good chuck that fits your in luck. If not then you have a hand drill that is perfect for holding a champher tool to debur holes.

lg
no neat sig line

Outlawmws · Jan 30, 2012

Larry is onto something here!

I also have a chuck on a handle, but I made mine from an old file handle, and an inexpensive chuck and arbor setup. Std 1/2 fine thread though.

However, I just checked out my collection of hand drills, and all but one were too small.

This one has a 24 thread, BUT it is 9/16 shaft. You may want to double check the thread diameter on yours as it's really easy to miss unless you are using calipers.

And yes that is a star bit in it and yes, I do use it for driving star bit deck screws.

So once you find the right matching hand drill type/size, you should be able to find one and "borrow" its chuck

rodknocker · Jan 30, 2012

Outlawmws said:
You mean 1/2-24 don't you?

Is the spindle as simple as it looks in the pics? If so, can you make or have a another made?

Yeap thats what I meant, these tap numbers, been messing me up all day. The spindle is amazingly simple, just the wrong thread.

rodknocker · Jan 30, 2012

larry_g said:
When I need a chuck for my old Champion DP I found a hand drill like pictured and moved the chuck to the drill press. So keep your eye open for a hand drill. If you get one with a good chuck that fits your in luck. If not then you have a hand drill that is perfect for holding a champher tool to debur holes.

lg
no neat sig line

Good idea Larry, I have an old egg beater drill at my mothers house I'll have to check it.

tool_scrounge · Jan 31, 2012

Is the end of the 1/2-24 shaft counterbored as shown in the photos below? I have been staring at this chuck for years and always wondered what it went on.

Outlawmws · Jan 31, 2012

The smaller egg beater drills are unlikely to have a shank that large, The shoulder drill I pictured is my biggest (note the side handle and second set of gearing on the crank wheel, its a two speed drill.

Tool scrounge, the drill head that you pictured is essentially the same as both the one on the file handle I pictured, and as the design of the one on my hand crank drill. Both have hollow shanks.

Champion Forge Drill Press Jacobs Chuck Threads?

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