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4 Matching Results
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Safety Device For Railway-Tracks
Patent for a safety device for railway tracks to prevent derailment. Illustrations included.
Date:
February 21, 1911
Creator:
Carlton, Robert Elliston & Ryle, Marcus Warland
Object Type:
Patent
System:
The Portal to Texas History
Balmorhea State Park
Map for the Balmorhea State Park near Toyahvale in Reeves County, Texas showing access routes, camp sites, and park amenities.
Date:
February 2013
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Map
System:
The Portal to Texas History
Vehicle-Wheel.
Patent for improvements in vehicle tires consisting of a solid tire made out of rubber, but which also has the same elasticity as a pneumatic tire and includes instructions and illustrations. The main goal of this tire is to act as a shock absorber to prevent serious injury from happening to the driver in a vehicle.
Date:
February 29, 1916
Creator:
Downing, Otto P.
Object Type:
Patent
System:
The Portal to Texas History
Slide-Display Machine.
Patent for a mechanism that automatically moves the slides through a slide display machine to display each successfully upon a wall or screen, illustrations included.
Date:
February 19, 1918
Creator:
Brown, Thomas E.
Object Type:
Patent
System:
The Portal to Texas History