Resource Type

Cattle-Guard. (open access)

Cattle-Guard.

Patent for a simple and inexpensive cattle-guard that has comprising rollers which can be independently and easily replaced. The bars that hold the rollers can also be easily removed.
Date: January 30, 1894
Creator: Lefléve, Louis
System: The Portal to Texas History
Improvements in Bread-Pans (open access)

Improvements in Bread-Pans

Patent for a bread pan with attached lid that slices bread as it bakes. Includes instructions and illustration.
Date: January 30, 1912
Creator: Jefferson, George F.
System: The Portal to Texas History
Electric Circuit Breaker (open access)

Electric Circuit Breaker

Patent for circuit control apparatus that automatically opens the circuit when conditions are abnormal.
Date: January 30, 1917
Creator: Nielssen, Steffen F.
System: The Portal to Texas History
Locking Mechanism (open access)

Locking Mechanism

Patent for locking mechanism, particulalry used in locking liquid dispensing machines.
Date: January 30, 1917
Creator: Bradley, Richard C.
System: The Portal to Texas History
Soldering Device (open access)

Soldering Device

Patent for improved automatic soldering device.
Date: January 30, 1917
Creator: Bradley, Richard C.
System: The Portal to Texas History