Resource Type

States

Electrical Testing Device. (open access)

Electrical Testing Device.

Patent for "improvements in electrical testing devices, and more specifically to an improved fluxmeter for testing the strength of magnets" (lines 13-15).
Date: March 30, 1920
Creator: Bierbower, Richard C.
System: The Portal to Texas History
Electrical Testing Device. (open access)

Electrical Testing Device.

Patent for an electrical device with an improved circuit arrangement in combination with various devices all assembled in compact arrangement on a board which enables to easily locate faults in various electrical apparatus or parts. This electric device is capable of use by anyone who isn't skilled as an electrician.
Date: March 30, 1920
Creator: Bierbower, Richard C.
System: The Portal to Texas History
Reinforced Belt. (open access)

Reinforced Belt.

Patent for a reinforced belt made with power transmission in mind. It has an improved body which is made up of steel U-shaped chain links embedded in flexible belt material. The belt is strong, flexible, durable, simple, and inexpensive.
Date: November 30, 1920
Creator: Shiner, Elliot E.
System: The Portal to Texas History