Collapsible Rim. (open access)

Collapsible Rim.

Patent for a collapsible rim for wheels, particularly the wheels of motor vehicles, to provide ease in changing tires. Instructions and illustrations are included.
Date: March 20, 1917
Creator: Rogers, Francis
System: The Portal to Texas History
Improvement in Machines for Polishing Marble, &c. (open access)

Improvement in Machines for Polishing Marble, &c.

Patent for an improved machine that rubs and polishes marble using a sand and water box moving forward and backward to polish the stone without man power and tools, including illustration.
Date: March 20, 1860
Creator: Emmett, William
System: The Portal to Texas History
Railroad-Rail Joint. (open access)

Railroad-Rail Joint.

Patent for new and useful improvements in railroad rail joints, including instructions and illustrations.
Date: March 20, 1900
Creator: Hopping, Samuel Miller
System: The Portal to Texas History