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Apparatus for Transmitting Sound-Waves (open access)

Apparatus for Transmitting Sound-Waves

Patent for transmitting sound waves by magnetic induction and to "furnish an apparatus by which these different vibrations can be heard at the receiving end" (lines 20-22). Includes descriptions and illustrations.
Date: October 17, 1911
Creator: Harvey, Fred Brown
System: The Portal to Texas History
Coach-Equalizing Suspender. (open access)

Coach-Equalizing Suspender.

Patent for a coach-equalizing suspender.
Date: March 4, 1902
Creator: Best, William Newton
System: The Portal to Texas History
Patent for Rotary Drill (open access)

Patent for Rotary Drill

Patent for Rotary Drill
Date: August 22, 1916
Creator: Grinffin, Thomas. J
System: The Portal to Texas History
Patent for Rotary Drill (open access)

Patent for Rotary Drill

Patent for Rotary Drill
Date: August 22, 1916
Creator: Griffin, Thomas J.
System: The Portal to Texas History
Oil Burner (open access)

Oil Burner

Patent for an oil burner
Date: April 15, 1913
Creator: Casad, Roland C.
System: The Portal to Texas History