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View Full Version : What kind of lathe is this?



dockterj
03-15-2011, 12:25 PM
http://www.repocast.com/details.cfm?ID=422110
I'm not interested in bidding :) but the tailstock runs on a separate set of ways. I can't tell what is under the cover behind the apron. Looks like a specialized machine and I've never seen one like this (not that that means anything). What was it's intended purpose?

JCHannum
03-15-2011, 01:06 PM
I can't hazard a guess to its purpose either. Charles Strelinger was a Detroit machine tool dealer, so that is not the manufacturer's name, but the dealer who originally sold the machine.

Arthur.Marks
03-15-2011, 01:42 PM
Time to send someone in Wed or Thurs. during inspection hours to investigate! :D (peculiar thing. I'm interested to know too)

macona
03-15-2011, 01:58 PM
Kind of looks like an old DeWalt lathe I had once seen pics of.

Rosco-P
03-15-2011, 01:59 PM
No compound, short bed, very beefy toolholder, mystery controls under the cover on the front of the headstock. Appears to have a leedscrew. Second op. or chucker?

Dr Stan
03-15-2011, 02:02 PM
I've never seen anything like it. Certainly one of the stranger machine tools.

dockterj
03-15-2011, 02:21 PM
The lever on top of the headstock could be for a collet chuck? But it has a 3 jaw on it and a 4 jaw in the chip tray. I love the lines of the tailstock. Looks very steam punkish.

Arthur.Marks
03-15-2011, 03:12 PM
Personally, I have been dwelling on the Ammco and truck tires, etc. in the back of the photos. I'm supposing it has some automotive machining function, but who knows?

BillTodd
03-15-2011, 04:27 PM
Interesting lathe (I have seen one something like it on the PM forum in the last year or two)

I suspect a specialist production machine (i.e. designed primarily for one job)

Note that the bed is completely covered over its full length; the forward cover/guard looks like it passes under the head stock, and the tail stock has been repositioned (by design) to allow the rear of the bed to be covered as well. There could be a lead screw (or even a rack drive) under this cover.

The cross-slide is not as well protected. It has a hook shaped 'Hendy' like threading stop on the front dovetail.

The spindle drive is at right angles suggesting helical or even worm drive, so it's designed for slow speed.

It looks to me like the handle on top of the head stock controls the rear mounted clutch or belt 'gear' change (reverse perhaps?) and the handle at the front is for sliding or threading feed it appears to be connected to a Hardinge like Stop-Rod running the length of the bed.

The spindle bore seems quite small for a such a stout machine

Could be for threading / turning something hard and abrasive?

There's an interesting clevis(?) joint on the top/back of the carriage (see pic4 bottom right)

JCHannum
03-15-2011, 04:29 PM
I was trying to convince myself that it was some sort of brake drum lathe, but had no success.

Note in the third photo, from the rear, the drive is 90* to the spindle and passes through somehow. Also, that is not a leadscrew but some sort of feed rod. Also, no apron per se, but only a crossfeed. I am going to suggest the chuck indexes via the lever rather than rotates and the carriage is powered, making it some sort a shaping machine for producing splines.

dockterj
03-15-2011, 04:39 PM
Perhaps the lantern tool post doesn't go with the machine either. If the spindle indexes maybe there was a toolpost grinder of some sort on the cross slide. That would explain the completely covered ways. I agree it looks they went through great pains to design the headstock (and the tailstock) so that solid covers could slide over the ways.

BillTodd
03-15-2011, 04:56 PM
I am going to suggest the chuck indexes via the lever rather than rotates
Possibly, but the faceplate, 4JC and revolving centre in the tray seem to suggest normal turning operations.

Bill

jlrii
03-15-2011, 07:12 PM
Hmmm.......dunno, never seen the likes of that before. Possibly worm drive spindle, real low rpms. I'd guess that rod along the front that has to do with the lower lever on the headstock is some sort of feed lockout or feed reverse triggered by the block on the rod. How the carriage, if it does have longitudinal feed, is driven is a mystery...chain drive (never seen that before). The chip in the 4th pic isn't heavy but suggests normal turning. All that attention to protecting the ways does suggest grinding. Damn weird thing I wish I could see it myself. Somebody has to check that thing out.

JR

jugs
03-15-2011, 07:38 PM
I recon it's for turning Cast Iron Chilled Rolls for small rolling mills (widely used for all types of materials)


My reasons -
It's built like a brick $hithouse.
It's low gear is right for turning chilled iron with HSS tools.
The offset bed is right for heavy cuts on a lg dia.
The tailstock allows working full length but gives full support
The lead-screw is mounted between the ways giving a better pull (less wear) the feed lever is on front to left of chuck & has an adjustable stop (the bar running along the front).
The lever on the top operates the drive (looks like a cone clutch).
I've seen cross-slide tool-holder mounts like that used for mounting form tools (just as you need for redressing sets of rolls).

Nice bit of kit. looked in my books but cant find it.

john
:)