Monarch 10EE 30" on ebay?

Is this a 30" lathe? What is the hand wheel at the back for?
It does not appear to have threading rod/option and is it missing the forward reverse knob on the head stock?


Monarch 10EE Lathe | eBay

It is a Sundstrand Drive machine, although the Sundstrand drive might not be there.

The Sundstrand drives are hydraulic variable speed drives which utilize a 3 HP three-phase motor as a "prime mover". It is possible to replace the 3 HP three-phase motor with a 2 HP single-phase motor ... assuming the Sundstrand drive is actually there, of course.

The Sundstrand machines had a base which was less wide than all later ones. For this reason, the right hand side directly under the bed is extended through a casting which is applied to the base. This makes the base appear to be a 30", but there were no 30" machines in this form factor ... all such machine are 20".

The original base for the machine made no provision for a drive system at all, and it was essentially a base under the headstock and a single leg under the tailstock. Photos of this early machine exist in the archives.

Only after Monarch had firmed-up its choice of a drive system was the base made fully enclosed and full-width.

Remember, the basic machine was designed by one man (C.A. Bickel) in the mid-1930s, and another man (C.E. Greene) was assigned to design the drive system. Two very great men, indeed.

The leadscrew is there as is the headstock Fwd/Off/Rev switch.

thermite said:

..and the handwheel asked about works to change the speed through a mechanical, not electrical, linkage, so needs a bit more leverage than the potentiometers of the later MG and subsequent drive systems can get along with on a smaller knob.

Bill

Click to expand...

Wow... so this is an early, less evolved 10EE more or less. Thanks!

"Not known to me how smooth those are vs the DC drive - having small diesels in the mix does make it a tad hard to sort without instruments."

You know, the Ward-Leonard 10EEs could even be water-wheel-powered, if one was an observant Amish machinist.

The 6 +/- HP three-phase motor is only there acting as a "prime mover" for the Ward-Leonard System.

If an extension to a water-wheel-powered jack shaft system was fitted, the M-G 10EE could be water-powered, requiring no external electricity whatsoever.

Which reminds me, Amish country is generally in and around Lancaster County, PA, and in Lancaster once existed Hamilton Watch Co, producers during the early 10EE years of the fabulously good Model 21 and 22 marine chronometers, possibly the very first mass-produced time-keepers with the accuracy required for world-wide navigation. U.S. Navy ships, and allied ships alike, were equipped with these mass-produced time-keepers.

Hamilton Watch Company - Wikipedia, the free encyclopedia