Never heard of this one. Maybe that's a good thing. Can'ya stick a photo up?
I did find a listing: "KIEFER (KARL) MACHINE COMPANY
Karl Kiefer Machine Co. (Cincinnati, Ohio). There is a Leader in Everything - Standing Out in its Field with Spectacular Splendor of Quality and Performance. Cincinnati: The Company, 1939.
(This Item is available at the Cincinnati Historical Society Library)
Karl Kiefer Machine Co. (Cincinnati, Ohio). Jar and Bottle Washing Machines. Cincinnati: The Company, 1910s-1920s.
(This Item is available at the Cincinnati Historical Society Library)
Karl Kiefer Machine Co. (Cincinnati, Ohio). Pressure Filling Machines. Cincinnati: The Company, 1910s-1920s.
(This Item is available at the Cincinnati Historical Society Library)" From.
He seems to be a dead guy "Karl 16 Apr 1931, Cincinnati, Hamilton Birth: 28 Jul 1868, Worms, Germany Age: 62 years 8 months 19 days Male- Married Address: 920 Lexington Ave Occupation: Manufacturer Cemetery: Cremetory Spouse: Adele W. Kieger Parents: S. Kiefer, Babette Rheinsteim"From.
I assume this is a lid you've dug? Redbook 1395 - Karl Kiefer Pat. Nov. 25 1913, embossing on the lid only. The jar I have has a Hazel Atlas mark on the base. It has a rather unique clamp - actually 2 clamps.
That's a great jar. Is it a pint? Do they have Red Book numbers and letters? Ole Karl was a bottlin kinda guy. I really enjoyed lookin round your site.