Manufacture of Soap.
Description:
Patent for a new and improved soap-making process. This process "consist[s] in applying hydraulic pressure to the mass undergoing mixture and steam-heating . . . [and] thoroughly mixing the ingredients . . . in a close vessel by means of rotary blades, heating the same by steam, and at the same time applying pressure by means of a hydraulic pump to the said mixture" (lines 86-95).
Date:
December 15, 1885
Creator:
Grant, William A.
Item Type:
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