Attachment for Coffee-Roasters. (open access)

Attachment for Coffee-Roasters.

Patent for an attachment to a coffee-roaster that assists in separating coffee beans from foreign matter.
Date: December 25, 1917
Creator: Liberto, Samuel
System: The Portal to Texas History
Insulator. (open access)

Insulator.

Patent for an insulator for water pipes that conducts away electric current to be utilized elsewhere.
Date: December 25, 1917
Creator: Stone, Oscar Otto
System: The Portal to Texas History
Gas Compressing Pump for Ice Machines. (open access)

Gas Compressing Pump for Ice Machines.

Patent for a new and improved pump for refrigerators. This design consists in "[t]he combination, with the cylinder, having inlet at or near its lower end, a downward-closing valve at its upper end, an open-ended piston having internal ribs or projections, annular valve-seat around its upper open end, and a centrally-apertured bottom plate, of the valve having vertical movement within the piston and closing upwardly against the valve-seat, said valve being formed of the two sections . . . having hemispherical recesses and the lower section having an aperture, communicating therewith" (lines 30-42).
Date: December 25, 1888
Creator: Farnsworth, Thomas
System: The Portal to Texas History