Pump or Motor. (open access)

Pump or Motor.

Patent for pump which converts to motor. Pump, compressor doubles as a motor when rotation operation is reversed.
Date: April 27, 1915
Creator: Reaugh, Frank
System: The Portal to Texas History
Boll Breaker and Cleaner (open access)

Boll Breaker and Cleaner

Patent for new and improved Boll Breakers and Cleaners "for handling and cleaning seed cotton prior to it delivery to the ginning mechanism..." (lines 9-10).
Date: April 26, 1915
Creator: Kinne, Tempel L.
System: The Portal to Texas History
Automatic Train-Stop. (open access)

Automatic Train-Stop.

Patent for a more efficient automatic train stop with a mechanism that uses a connection with the block system used on railways to stop a train when it runs into "the tracks of the danger zone or upon the tracks of the block where the train should be stopped." (lines 16-18)
Date: April 20, 1915
Creator: Gramm, John A.
System: The Portal to Texas History
Process of and Apparatus for Classifying Comminuted Material. (open access)

Process of and Apparatus for Classifying Comminuted Material.

Patent for improving the process of classifying materials in order to reduce rehandling and improve efficiency in sizing materials through the use of screens.
Date: April 20, 1915
Creator: Sutton, Henry M.; Steele, Walter L. & Steele, Edwin G.
System: The Portal to Texas History
Cotton-Picking Machine (open access)

Cotton-Picking Machine

Patent for improvements to a cotton picking machine complete with illustrations
Date: April 13, 1915
Creator: Meier, John
System: The Portal to Texas History