torqueman2002
Well-known member
It has been awhile since I saw a big boy Block in these parts - SE Michigan.
I've stayed away from estate sales, because lots of other things tend to follow me home. All great things, but Mrs. T doesn't share my fine sense of appreciation for pre-pre-vintage tools.
So, when this guy popped onto my radar I scrambled the jets and brought him back.
'HD' round top 3/4-HP Block m-397.19670, shown as found, after a light dust-off and a little bit of Kroil.
Has anyone seen a dual-voltage diagram on a HD base?
This rtop Block is in great condition, with the exception of the LH eye shield glass.
The stones look like they've seen very little use, but will get replaced as a matter of personal safety preference.
Good advice to live by.
Wiring detail. This is the first time I have seen this style of relay with a terminal on the top; the above diagram does not show this style BTW.
Lamp details.
Even the rubber grommet/feet are in great shape.
Thanks for looking.

I've stayed away from estate sales, because lots of other things tend to follow me home. All great things, but Mrs. T doesn't share my fine sense of appreciation for pre-pre-vintage tools.

So, when this guy popped onto my radar I scrambled the jets and brought him back.
'HD' round top 3/4-HP Block m-397.19670, shown as found, after a light dust-off and a little bit of Kroil.
Has anyone seen a dual-voltage diagram on a HD base?
This rtop Block is in great condition, with the exception of the LH eye shield glass.
The stones look like they've seen very little use, but will get replaced as a matter of personal safety preference.
Good advice to live by.
Wiring detail. This is the first time I have seen this style of relay with a terminal on the top; the above diagram does not show this style BTW.
Lamp details.
Even the rubber grommet/feet are in great shape.
Thanks for looking.
