9 Matching Results

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Car-Truck. (open access)

Car-Truck.

Patent for a car truck for use on trains, which can withstand heavy loads and high speeds.
Date: August 25, 1908
Creator: Mayo, William C.
Object Type: Patent
System: The Portal to Texas History
Electric Track-Brake. (open access)

Electric Track-Brake.

Patent for an electric train brake, which allows trains to not slow down on curves without derailing and allows faster emergency braking.
Date: August 25, 1908
Creator: Mayo, William C.
Object Type: Patent
System: The Portal to Texas History
Electrically Operated Air Brake System (open access)

Electrically Operated Air Brake System

Patent for an electrically operated air brake system.
Date: August 25, 1908
Creator: Mayo, William C.
Object Type: Patent
System: The Portal to Texas History
[Letter from J. S. to David W. Stephens, April 25, 1932] (open access)

[Letter from J. S. to David W. Stephens, April 25, 1932]

Letter from J. S. to David W. Stephens discussing the fee to be paid to F. I. Dyer, relating to the court case, Sam Underwood et al vs. Gulf Refining Company.
Date: April 25, 1932
Creator: unknown
Object Type: Letter
System: The Portal to Texas History
[Letter from Truett Latimer to Conrad Dunagan, March 25, 1959] (open access)

[Letter from Truett Latimer to Conrad Dunagan, March 25, 1959]

Letter from Texas State Representative Truett Latimer to Conrad Dunagan affirming that Monahans Sandhills State Park was included in a recent appropriations bill.
Date: March 25, 1959
Creator: Latimer, Truett
Object Type: Letter
System: The Portal to Texas History
Liquid-Dispensing Apparatus. (open access)

Liquid-Dispensing Apparatus.

Patent for a coin operated drink machine, which dispenses a set amount of liquid into a cup when a coin is inserted.
Date: August 25, 1908
Creator: Mayo, William C. & Houlehan, John
Object Type: Patent
System: The Portal to Texas History
Regulator for Dynamo-Electric Machines. (open access)

Regulator for Dynamo-Electric Machines.

Patent for an electric dynamo machine regulator for use in traction systems on trains.
Date: August 25, 1908
Creator: Mayo, William C. & Houlehan, John
Object Type: Patent
System: The Portal to Texas History
Ticket Selling Machine (open access)

Ticket Selling Machine

Patent for a ticket selling machine.
Date: August 25, 1908
Creator: Mayo, William C.; Houlehan, John & Briggs, George F.
Object Type: Patent
System: The Portal to Texas History
Transmission-Gearing. (open access)

Transmission-Gearing.

Patent for a transmission gearing for a traction system for trains, which can be used on all types of curves without ill effects.
Date: August 25, 1908
Creator: Mayo, William C. & Houlehan, John
Object Type: Patent
System: The Portal to Texas History