Please identify lathe year/model

[TomH]

Hi first post here
i have been working on this old lathe I bought. I think it’s from the 20s but not really sure of year or model
any info is greatly appreciated.
Also it is going to need a drive belt, large flat belt with cogs on the inside. Pulley on motor has matching cogs. Need to find a belt.
Thank you , Tom

 

[johnoder]

Need photos of course. Here is one of the how-to threads

Posting Pictures on the South Bend Forum

I'm writing this tutorial to update the one written by Paula many, many years ago. The instructions in that tutorial (it is a sticky on this forum) are obsolete and needed to be updated. The instructions in Paula's post still work, but they are cumbersome and requires membership in an off-site...

www.practicalmachinist.com

 

[TomH]

Pictures I hope

 

[dana gear]

John Oder probably knows this one right off.
Kind of looks like a model C, if so sometime around 1930.
It would have the very early Monarch Flanged spindle nose. The machine number 1 kind of throws me off a little as that is generally where the model was stamped.
You can contact Monarch directly with the lot number, they still as far as I know keep all the original records. Vintage machinery is also a great source of Monarch information.

 

[john.k]

Belt with cogs on the inside is going to be a silent chain drive (steel link chain) like many oldtime engine car timing chains.

 

[TomH]

Thanks for the reply’s
The drive belt is a wide rubber belt , the pulley on the motor has cogs but the pulley up on the head is a wide smooth pulley with no cogs. A chain won’t work.
Thanks, Tom

 

[jlegge]

Pictures I hopeView attachment 372832View attachment 372831

it still using a lot number so it was built before 1927 when serial numbers were introduced. It has cone clutch apron so this puts it after 1924. It looks like a early Timken headstock. Depending on swing, it could be an AA or BB. The spindle looks like it threaded. Interesting machine that bridges the cone head to the gear head lathes Monarch made. Monarch Lathes has records and might be able give a better ID of this lathe.

 

[johnoder]

Not the flanged spindle which is a sizeable disc. Old print that combines old proprietary flanged nose and the later D type on a single spindle dwg

My CM 22 had the flanged spindle

Lathe has the lift off covers over the spindle bearings so may be the plain (Babbitt , Bronze, etc) bearings

 

[TomH]

It has plain bearings, not roller and threaded spindle.
More important than anything right now is I can’t keep the belt on it. If I start it in forward the belt jams up against the headstock, if I start it in reverse the belt fly’s off the left side of the pulley. Every time it comes off the lower pulley tears it up a little more. It has essentially ruined the belt.The pulleys are dead on square and parallel. I even moved the motor one inch over and remounted it because it wasn’t perfect, with no improvement. I’m not sure where to go from here . Any thoughts greatly appreciated.
Thanks, Tom

 

[Cal Haines]

Is this a flat belt? If so, the pulleys usually have a little crown to them. The crown helps keep the belt centered.

Cal

 

[dana gear]

Not the flanged spindle which is a sizeable disc. Old print that combines old proprietary flanged nose and the later D type on a single spindle dwg

My CM 22 had the flanged spindle

Lathe has the lift off covers over the spindle bearings so may be the plain (Babbitt , Bronze, etc) bearings

We have a Monarch CCB with the Flanged spindle.

 

[jlegge]

Not the flanged spindle which is a sizeable disc. Old print that combines old proprietary flanged nose and the later D type on a single spindle dwg

My CM 22 had the flanged spindle

Lathe has the lift off covers over the spindle bearings so may be the plain (Babbitt , Bronze, etc) bearings

Good eye, John. I didn't noticed the plain bearings.

More I look at it I wonder if it has helical gears or spur gears. It be good to get picture with the headstock cover removed. This is indeed a very interesting lathe. I am noticing a few usual (to me knobs) and the shifting handles seem larger than a normal hexical geared headstock.

Monarch early helical gear headstock was 8 speed and they standardized on the 16 speed.

John