Broadcast Seeder. (open access)

Broadcast Seeder.

Patent for a broadcast seeder designed to "cultivate, plant, and subsequently roll or cover the seed, the elements for accomplishing the same being combined in a single device simply constructed" (lines 10-13).
Date: June 3, 1890
Creator: Callaway, Johnathan Asa
System: The Portal to Texas History
Projectile (open access)

Projectile

Patent for an explosive projectile for use of penetrating and exploding ironclad and steel-clad ships, including instructions and illustrations.
Date: March 3, 1885
Creator: Hopson, Lucien
System: The Portal to Texas History
Wind Engine. (open access)

Wind Engine.

Patent for a new and improved wind engine. This design consists in "[t]he combination, with a suitable frame, of the shaft, having wind wheel or drum, provided with rods having wings and arms or cranks, and laterally projecting brackets, having bell-crank levers, loaded at their lower ends, the connecting rods, sleeve[s], washer, spring, and . . . having pivoted rods connecting said sleeves with the arms" (lines 94-102).
Date: April 3, 1883
Creator: Fletcher, George Ephraim
System: The Portal to Texas History
Dam Construction (open access)

Dam Construction

Patent for a movable dam wall shorter than the depth of the water behind it, including illustrations.
Date: March 3, 1914
Creator: Hunt, Edward B.
System: The Portal to Texas History