Superior Duplex Milling Machine

Ulma Doctor

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I found a screaming deal on CL for a milling machine.
this is one of the odd type of machines i like.
it has twin spindles and is made for production work.
the Knee and Spindles are independently raised and lowered.
there is provision for the twin spindles to be positioned in unison or separately to accommodate different size work and operations .

May i introduce you all to Beth,
i gave her a quick once over and plugged her into 230v, 3 phase and she fired off no problem.
i even got lucky to have the drive motor's rotation correct!!!:headscratch:

she runs very smoothly. you can't tell by the pictures but the machine still has a lot of the original scraping visible on the knee's ways
and the vertical ways also show a lot of original hand scraping too!

Superior 1.jpg the milling table X axis is operated by the large 4 spoked handwheel. it's travel is about 14" lock to lock
Superior 2.jpg arrowed left are the 2 spindles. the spindle Z axis is raised and lowered manually. they can be raised at the same time or one or the other at a time.

Superior 3.jpgarrowed left is the driveshaft for the spindles. both spindles turn the same direction without provision for mechanical disconnect.
In other words, if the machine is running, the spindles are turning
Superior 4.jpg the second op vise is adjustable in the direction superimposed with arrows. it is a vise for work holding. it can grab fairly large work and can be positioned at variable places upon the secondary X axis with the long studs that capture the vise body upon it's pedestal.
the acme threads are 8TPI,
the handle is removeable.
the vise provides a semi-quick release and tighten for objects of similar dimensions in a production run, i would surmise.

the machine performed slitting operations as it's last duty.
i surmise this could be quite useful in days to come.

i'll add more interesting facts to this thread as i learn them.
if you have experience or information on this machine i would like to hear from you!
thank you for reading and participating

Superior 1.jpg Superior 2.jpg Superior 3.jpg Superior 4.jpg
 
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rgray

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Re: Superior Dual Spindle Milling Machine

Neat machine. I love those old machines. Any Idea what vintage?
Looks like it is in great shape for how old it must be.
 

Ulma Doctor

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Hi rgray,
thank you, i'm glad you like it!
i really don't know anything about this milling machine.
it appears to be early 50's:dunno:, she could be deceptively older...
i had never seen one before.
i have started research but have not found a lot of information yet.
the machine is fully functional and needs some clean up.
i plan to try my hand at biax scraping this milling machine before moving on to other scraping projects.
i figure if i totally mess things up, at least i didn't spend a lot for the victim.
thank you for reading and commenting.

mike:))
 
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Ulma Doctor

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Thanks Don!!!
that's the nicest thing that has ever been said to me!!!!

:biggrin:


just wait to see what else i got form the former owner...
you will not believe it i assure you, but that will be another thread:))
 
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Karl_T

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Re: Superior Dual Spindle Milling Machine

I really like that nut cracker, err large table handle :)
 

Gary Ayres

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Re: Superior Dual Spindle Milling Machine

A stunner! Once again, congratulations Mike!

A serious-looking, solid, robust machine. Love the twin heads and tables and the capstan handwheel.

Look forward to seeing her after some TLC.
 

mattthemuppet2

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Re: Superior Dual Spindle Milling Machine

congrats! I've seen that on CL for a while, so it's great that someone on here has picked it up and for a really good price. I'm a bit confused about the upper spindle and that funky riser vise - how's that all supposed to work?
 

thomas s

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Re: Superior Dual Spindle Milling Machine

Great find Mike thanks for posting it.
 

Ulma Doctor

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congrats! I've seen that on CL for a while, so it's great that someone on here has picked it up and for a really good price. I'm a bit confused about the upper spindle and that funky riser vise - how's that all supposed to work?
Thank you everyone
and thank you too matt!
i think i stole it for the price :))
the spindles can hold an arbor type milling machine cutter and/or slitting saw blade in either/or both spindles.
not unlike a horizontal milling machine, sans the overarm arbor support.
you can mount items on the secondary table, between the moveable vise jaw and the table. the vise jaw is actuated by means of a large acme threaded stop collar on the end of the secondary table, that is opposing the spindle side.
a handle is inserted into the stop that has a series OD holes every 20* or so, for means to tighten the collar against the intended work. with the work held in the vise , the work could be milled , slotted, or slitted as required.

it would be possible to perform operations on 2 separate work pieces for fast production,( 1 on the main table and 1 in the secondary vise).

i'll try to elaborate with pictures or a video in the upcoming weeks so that you and others may get a little more insight.
 
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Gary Ayres

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Re: Superior Dual Spindle Milling Machine

Just a thought, Mike - might be worth sending some pics of Beth to Tony at Lathes UK. He has a section for unusual machines, and if he posts it someone may step forward with some info on her.
 

Eddyde

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Re: Superior Dual Spindle Milling Machine

Cool looking machine, Perhaps custom built for some factory?
 

Ulma Doctor

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Just a thought, Mike - might be worth sending some pics of Beth to Tony at Lathes UK. He has a section for unusual machines, and if he posts it someone may step forward with some info on her.

I had not thought of sending pictures to Tony, thank you for the suggestion!!!!
that may a very good start!
i looked at their equipment heading but didn't see a Superior Machine heading.
but, that doesn't mean he doesn't have any info!!!
thanks again!!
mike:))
 
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Ulma Doctor

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Re: Superior Dual Spindle Milling Machine

Cool looking machine, Perhaps custom built for some factory?
Hi Eddyde,
thank you for reading. I'm glad you like her!
your guess is as good as mine, i have never seen anything like it!

mike:))
 

Gary Ayres

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Re: Superior Dual Spindle Milling Machine

I had not thought of sending pictures to Tony, thank you for the suggestion!!!!
that may a very good start!
i looked at their equipment heading but didn't see a Superior Machine heading.
but, that doesn't mean he doesn't have any info!!!
thanks again!!
mike:))
Mike - Tony may not have any info himself but he might be interested in posting it on his 'unknown machines' section.

Cheers,

gary
 

mattthemuppet2

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Re: Superior Dual Spindle Milling Machine

pretty damn cool. With a bit of thought you should be able to set up different cutters so you can do 2 different operations by moving the piece from one vise to the other and indexing off a known stop or point. Probably not such a big deal for one offs, but I imagine it would make multiples a lot easier. Either way, looks like you got yourself a cool little horizontal!
 

Ulma Doctor

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I have received information the may indicate that Beth may be older than i first anticipated.
i received an email that referenced a catalog from the 1920's mentioning Duplex milling machines.
it is worthy of further investigation.
just an update for the peanut gallery!
as always thanks for reading and participating!
mike:))
 
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CoopVA

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Re: Superior Dual Spindle Milling Machine

Very nice find Mike! I'm looking forward to seeing what you do with it.


Sent from my iPad using Tapatalk
 

Brain Coral

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Re: Superior Dual Spindle Milling Machine

Hello Mike and Happy New Year to you... :)

That is one neat looking machine.... nothing that I've ever heard of... It's difficult to estimate it's size from the pics. What's the table size and estimated weight of the machine ?

Cheers... :)

Brian
 

rgray

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Re: Superior Dual Spindle Milling Machine

I was thinkin if it's not 100+ years old it's close.
 

Ulma Doctor

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Hello Mike and Happy New Year to you... :)

That is one neat looking machine.... nothing that I've ever heard of... It's difficult to estimate it's size from the pics. What's the table size and estimated weight of the machine ?

Cheers... :)

Brian
Hi Brian,
thank you for the compliment!!
the machine is 5' 6" tall, 4' wide, 3' deep
primary table is 7" x 22"
secondary vise extends to hold work 6" thick
the mill weighs an estimated 1000 lbs, it's very solid. (Edit- Manufactured weight 900 lbs less drive motor)
thanks for reading!
Happy New Year to you too!!!
Cheers,
mike:))
 
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Gary Ayres

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Re: Superior Dual Spindle Milling Machine

I was thinkin if it's not 100+ years old it's close.
If it was 100 years old, wouldn't it have been driven via a lineshaft and flat belt setup? The electric motor on this machine looks pretty integral to the design.

I claim no expertise on this though...
 

Ulma Doctor

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there were flat belt versions of this very machine, they are pictured in the American Machinist volume #56 (1922).
at this point, i'm guessing my machine was made in the late 1920's, possibly early 30's. but i have no proof of this.

any information from the readers would be greatly appreciated.

mike:))
 
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Gary Ayres

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Re: Superior Dual Spindle Milling Machine

One of the things I love about old machines is exploring their history - as far as one can, at any rate.
 

mattthemuppet2

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Re: Superior Dual Spindle Milling Machine

I agree totally! Sadly I only managed to go back as far as a tattoo artist with my lathe, further back is a mystery :(
 

Gary Ayres

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Re: Superior Dual Spindle Milling Machine

Matt -

There's something wonderful about mystery, too.

I have a lovely American horizontal mill of obscure make ('Wisconsin') which is about 100 years old and was deposited in England under unclear circumstances during WW2. No further information is forthcoming. I kind of like that.

But maybe the history of your lathe is tattooed on the arm of a sailor somewhere...perhaps currently in a house of ill-repute in Singapore or Shanghai... :)
 
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