What is it?

[onanparts]

Armature Lathe & Undercutter. Curveball clearly did not work with you peeps! Hmmmm...hafta dig deeper in my toy box. 

This was a freebie from the local Telco maintenance shop. It was going to get scrapped but I had to save it! 
The original purchase order receipt from 1990 was still in the small toolbox on the end.

[tecnodave]

TJ,

That is one of the nicest I have seen, it would have found its way to my shop if it came by.


My original answer:

It's an armature turning lathe with a mica undercutter to provide clearance for commutator bars  on DC motor and generators!

[onanparts]

TJ,

That is one of the nicest I have seen, it would have found its way to my shop if it came by.


My original answer:

It's an armature turning lathe with a mica undercutter to provide clearance for commutator bars  on DC motor and generators!

It has a good home now. I have a few armatures to clean up so it will come in handy. Pic of original invoice.

[onanparts]

Lets try something a bit more obscure. It is related to some off grid/RE systems. 

[Westbranch]

In some ways the right hand end looks like a set of 'points' for a motor..

[tecnodave]

Switch controlled by fly ball governor to control motor speed or otherwise open windings,motor start switch?

td

[onanparts]

Switch controlled by fly ball governor to control motor speed or otherwise open windings,motor start switch?

td

The problem with old farts is it can be difficult to get anything past them. 

"Switch controlled by fly ball governor to control motor speed" is exactly what it is!

An OSKO, Over Speed Kutoff Switch, on my 1800 RPM Onan 12.5KW genset. It is set to open at an overspeed of 2250-2300 RPM and shutdown the genset. Old school mechanical magnetic switch but very effective. It's mounted to the end of the rotor/armature and the engine speed is of course controlled by a flyball governor. 

Dave is piling up the buckets of "nothing". Giving Westbranch an equal amount of nothing as technically it is a set of points for a motor...

This pic of it in the "open" position.

[onanparts]

Here we go again.  The "what" should be easy, the "who" not so easy. 

[tecnodave]

The what is easy but who?

td

[onanparts]

The what is easy but who?

td

Must not be "easy" enough, at least on the "what" part...

[Westbranch]

2  channel (stereo) Amp? 

love the size of those heat sinks... might even make toast

[TomW]

Reminiscent of a Marantz stereo amp I had back when dinosaurs roamed the earth?

[onanparts]

Reminiscent of a Marantz stereo amp I had back when dinosaurs roamed the earth?

Right book! But can ya get to the right page?  Hint: It's a very obscure page..... Another hint? Current real market value is near double of list price when it was new, or very close to it...

[Westbranch]

A pre amp?

[tecnodave]

It is a stereo amplifier with a preamp. It does look like Bob Carvers work but my Carver is a power amp only, no preamp so I can't be sure.  2230 ?

td