The Burke Sensitive Drill Press

**DSEL74** · 14th May 2015, 10:45 PM

Thought I'd share with you guys my current little project.

Here is the original catalog page for the drill.
Burke%20drill%20press%20no.%200.jpg

This is what I got:
$_57-27.jpg DSC_0111.JPG

My plan is to convert it back to "Original" as a flat belt machine. As so many of the original parts are missing and will need to be remade, this will be a rebuild rather than true restoration.

So far I have stripped the machine down and taken it back to bare metal.
[email protected][email protected]

It's been sanded back and coated in etch primer now.

DSC_0166.JPG
I was wondering if it is possible to get the broken flange on the pulley brazed or silver soldered to repair it?? Can you braze with a map gas torch??
The block of steel will hopefully end up being a future pair of top guide pulleys.
Top Guide Pulleys copy.jpg
I also would like to replace the locking bolt. I'm having difficulty locating a LH ½" UNF 20 bolt, or someone with suitable LH Die

The biggest challenge will be to make a new set of lower pulleys. Any suggestions welcomed.
Cone End.jpg Idler Pulley End.jpg Lower Cone Pulley.jpg

I picked up a 10mm Square S/Steel for the belt shifter. The shifter fork & handle yet to be done.
Lower Cone & Shifer copy.jpg

I had to make a new Upper guide shaft, which I used a bit of ½" S/Steel round stock and I made some Little brass collars, the original had swaged on rings but that doesn't allow easy service in the future.
[email protected][email protected]

**Michael G** · 14th May 2015, 10:50 PM

If you can send me dimensions I can make up a bolt like that for you. Shouldn't take long.

Michael

**DSEL74** · 14th May 2015, 11:08 PM

Originally Posted by Michael G

If you can send me dimensions I can make up a bolt like that for you. Shouldn't take long.

Michael

I can do that it is pretty straight forward in design. It be much appreciated!!

**pipeclay** · 14th May 2015, 11:13 PM

Suitable cast iron stock would be available to make both replacement items if required.

**KBs PensNmore** · 15th May 2015, 12:42 AM

Originally Posted by pipeclay

Suitable cast iron stock would be available to make both replacement items if required.

It might be readily available, but at what cost. I chased up the price of cast bar 600 X 100 X 60 and that was nearly $200.00. I'd try the scrap metal yards first, to find something that will be able to be machined down.
Kryn

**BaronJ** · 15th May 2015, 01:48 AM

Originally Posted by KBs PensNmore

It might be readily available, but at what cost. I chased up the price of cast bar 600 X 100 X 60 and that was nearly $200.00. I'd try the scrap metal yards first, to find something that will be able to be machined down.
Kryn

Hi Kryn,
Sounds like a candidate for old bar bell weights

**DSEL74** · 15th May 2015, 09:26 AM

Here is a sketch, qty x2

The head has been reworked and the thread is worn)stretched.

Below you can better see the original shape of the head.

**DSEL74** · 15th May 2015, 09:30 AM

Originally Posted by BaronJ

Hi Kryn,
Sounds like a candidate for old bar bell weights

Doubt they would be thick enough but I like the thinking. I may have to do them in wood and get them cast in aluminium or something at a later date. I'm thinking alu as it is easier to melt, and I may be able to do it in the forge. Well that is my best idea to date.

**franco** · 15th May 2015, 11:36 AM

Originally Posted by DSEL74

Doubt they would be thick enough but I like the thinking. I may have to do them in wood and get them cast in aluminium or something at a later date. I'm thinking alu as it is easier to melt, and I may be able to do it in the forge. Well that is my best idea to date.

Why not stick with hardwood since it is a rebuild and not a true restoration? Wooden pulleys have been around forever,and were quite satisfactory. For example:

http://www.backyardmetalcasting.com/reedlathes03.html

http://www.practicalmachinist.com/vb...pulley-160242/

Frank.

**DSEL74** · 15th May 2015, 04:31 PM

I might keep the wood ones if they turn out nice.

Sketch of the upper guide pulleys. These will be steel with bronze bushes.

The Burke Sensitive Drill Press-top-guide-pulleys-copy-jpg

I don't see how to turn the narrow deep recesses on a lathe, so I assume they would need to be done in a mill on a rotary table. The nominal wall thickness on mine are ¼"…and roughly to scale the ones in the photo look much thinner, but not sure how thin is string enough??

**Michael G** · 15th May 2015, 06:20 PM

Originally Posted by DSEL74

Here is a sketch

Thanks - you draw well. Hopefully

I'll be able to get onto it this weekend.

Michael

**KBs PensNmore** · 15th May 2015, 07:01 PM

Originally Posted by DSEL74

I don't see how to turn the narrow deep recesses on a lathe, so I assume they would need to be done in a mill on a rotary table. The nominal wall thickness on mine are ¼"…and roughly to scale the ones in the photo look much thinner, but not sure how thin is string enough??

Do you have a boring bar? The ones with carbide brazed on a Left and a Right hand, are the ones I'm thinking of. Left hand to do the cutting furtherest away from the chuck, and right hand for the centre. If you don't have em, PM me and I'll send a couple over.
Re thickness, I'd say that anywhere from 5 mm upwards, should be more than sufficient.
A couple of dumb bells, should be OK for this, if you wanted to use cast, instead of steel.
Kryn

**pipeclay** · 15th May 2015, 07:15 PM

Trepanning, for the recess.

**DSEL74** · 15th May 2015, 08:42 PM

Michael that be awesome

D

KB No I don't have those, only what has been ground from the small bits of HSS.

Pipeclay I have to google that

/

**KBs PensNmore** · 15th May 2015, 08:59 PM

Originally Posted by DSEL74

KB No I don't have those, only what has been ground from the small bits of HSS.

PM me your address and I'll get them away to you, if you want them?
Regards,
Kryn

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