Photo Index - Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl. - Triple Duty Grinder model EF 23-415

Machinery Photo Index

Manufactured/Badged by:
Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.
Milwaukee, WI; Jackson, TN; Tupelo, MS

Machine Specifications
Machine Class:	Wood Working Machinery
Machine Type:	Grinder, Bench
Machine Size:	7" Grinder, 1/2 HP
Submitted By:	Bill Aquino

Machine Specifications
Description/Model:	Triple Duty Grinder model EF 23-415
Date of Manufacturer:	Approx 1945
Serial Number:	38-4056
Last Updated	6/7/2006 4:42:42 PM

Comments:

This old girl was headed to the dumpster when a good friend of mine snagged it for me.

She certainly is heavy, all cast iron, the better part of 100#. I dissasembled it, and stripped all the old paint and built up grinding slag off, then primed and painted her.

The attention to detail that American manufacturers used to put into their machines is certainly apparent here. The eye shields are die cast with safety glass and two lamps per shield. The tool rest are all at least 1/4" steel and have 3 adjustment points.

This is a 3 phase motor so I'm using a small inverter to drive it. One of the advantages of this method, is that the speed can be adjusted down so as not to overheat fine cutting edges.

The wheels are new and sadly aren't anywhere near as well balanced as the old ones were, with visible runout on each.

Photo 1:

Comments: What she looked like coming home.
Source: My Minolta A1

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Photo 2:

Comments: After the cleanup, Note the 3 phase inverter mounted in the stand.
Source: My Minolta A1

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Photo 3:

Comments: The Nameplate, note the brass acorn nuts, love old machines!
Source: My Minolta A1

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