lot primitive old brown ceramic screw base insulators 1929 patent

Lot of five assorted rustic primitive old and antique vintage utility and farm insulators with steel lag screw bases. These are from an old farm estate and were being used for wiring around the farm and gates and corners post on electric fences. Two of these insulators are marked with a 1929 patent and one is marked JOSLYN.

These insulators are all about 5" long (2 3/4" long over the pottery) with old paint.