Improvement in Devices for Use in Reciprocating Churns. (open access)

Improvement in Devices for Use in Reciprocating Churns.

Patent for a churn that has "the cylinder with angular perforations, in contradistinction to round perforations and long slots" (lines 18-20) including a detailed explanation and description of the illustration.
Date: February 12, 1878
Creator: Forsyth, John
System: The Portal to Texas History