Very old Taft Peirce oil metering system (Bijur predecessor?)

[DownSouth]

Makes perfect sense to me, and certainly how I thought it worked! Couldn't quite grasp why you would have a switch with three positions if two did the exact same thing..

Looking at some of my photos it looks like it may be as you explained. It's a bit hard to tell but looks like it crosses over so different contactors depending upon lever orientation. Won't be able to confirm until the weekend unfortunately.

There was no seperate switch for the rectifier on my unit - not to say it wasn't like that originally though. I suspect it got almost a full re-wire when it came to Australia.

I'll have to test the process when I get it running and let you know if flicking the switch in the opposite direction helps remove the workpiece.

 

[Rex Walters]

There was no seperate switch for the rectifier on my unit

Thanks for confirming. Leaving the transformer and rectifier powered at all times seems a little concerning though. I guess safety and power consumption weren’t quite as big a concern in wartime factories.

 

[DownSouth]

Thanks for confirming. Leaving the transformer and rectifier powered at all times seems a little concerning though. I guess safety and power consumption weren’t quite as big a concern in wartime factories.

I agree, unlikely to put my hand under the table when its running but better to be safe than sorry. Might look into a little cover to prevent accidentally touching the underside of the switch..

 

[Rex Walters]

Mine came with about 290lb of caked swarf packed into every possible crevice and covering all surfaces. Probably more of a worry than fingers. At least the switch is on the upwind side of the wheel.

 

[DownSouth]

Mine came with about 290lb of caked swarf packed into every possible crevice and covering all surfaces

Hahah

When you get a chance would you be able to check what spindle style you have Rex? Mines M-1350 and I've never found a reference nor anyone else that seems to have it. Should be under the wheel guard.

Thank you

 

[Weldingrod1]

The magnetic chuck itself acts as a combination of a resistor and a BIG Inductor. It will radically smooth out the rectified AC.

If they were really sneaky, the "reverse" position would have a pretty big series resistor so that you mostly demonetized rather than magnetized the reverse direction.

Take a look at the circuit for the Magnabend demonetized step. Works great on my build!
https://aaybee.au/Magnabend/Magnabend_Handyman_Model.html

Sent from my SM-S911U using Tapatalk

 

[DownSouth]

Take a look at the circuit for the Magnabend demonetized step. Works great on my build!
https://aaybee.au/Magnabend/Magnabend_Handyman_Model.html

Thanks for the link - such an interesting build and well written. Might have to put that one in the project pile

 

[Rex Walters]

would you be able to check what spindle style you have

Same as yours:

 

[Rex Walters]

Take a look at the circuit for the Magnabend

Argh. I clicked the link.

Even with one eye closed and an arm held out in front of me, I may not be able to resist adding yet another project to THE LIST.

 

[DownSouth]

Same as yours:

Well there you go.. excellent! Thank you

I'll let you know if I ever find anything on that spindle, though I can confirm it's not in Catalogue E2A (that refers to spindle style "1973" for the T&P No.1), nor catalogue S537 and S435 (no mention of 1350 in either).