Vintage Floor Jack Identification Help Needed.

[GEM8819]

I am trying to find out anything and everything about this old floor jack. I can not find any identifying marks. The old name plate is unreadable.
I am wanting to rebuild the hydraulic cylinder and any information would be helpful. Name, Model, Capacity?
I do know that it is very heavy duty and built to last.
It has a very unique design for lowering the jack down.

 

[paulsomlo]

Looks like a Weaver - try these people: http://www.castleequipment.com/Jacks/weaver_jacks.htm

 

[1930artdeco]

2Ton, Weaver, I have the same one from the 70's. Well I have it but it is still at my friends house.

Mike