hmmmm, maybe we need an adding machine section, or "other machines"?

BTW...on the Olivetti :  Seller had indicated it stopped working when he pressed a lot of keys all in a short period of time.

I thought it might have been a blow glass-fuse...but this machine does not have it.

After I cleaned years of ribbon/ink gunk, paper dust, and old dried was-like grease from the machine, I plugged it in and the machine sprang to life.

I think I see a bi-metallic thermal over-load device near the capacitor...which may be self re-setting after the over-amp heat condition has cooled down.

On some other machines, the over-load device has a red reset plunger you can push in to reset once the bi-metallic device has cooled down, enough.

 

My Hermes calculating machine is sans-a-case.

Took a gamble on this nice case (with a Tower machine) for $ 13 USD.

Figured if the machine cannot be made to come back to life...that my Hermes will have a nice case.
.

I think it will.  Also, I am optimistic the Tower machine will clean up and get back to work.

I believe the Tower was made by Underwood at this time.  Underwood had their "Add-Mate" model which is very alike except for their more rounded body cowlings...of which the Tower is much more angular.

IIRC...some Tower-branded manual typewriters were actually Underwood machines, too.
.

Pete E. wrote:

I think it will.  Also, I am optimistic the Tower machine will clean up and get back to work.

I believe the Tower was made by Underwood at this time.  Underwood had their "Add-Mate" model which is very alike except for their more rounded body cowlings...of which the Tower is much more angular.

IIRC...some Tower-branded manual typewriters were actually Underwood machines, too.
.

I acquired an underwood just like that one. Works great but had to order some of that 5/16" ribbon from ribbons unlimited. I'll take some pictures soon and post. has a pretty nice case too.