Resource Type

Month

Gang-Plow. (open access)

Gang-Plow.

Patent for improvements in gang-plows in which the “disks” would contain a flared annulus and, it is formed by the truncation of a conical shell of large base and small altitude. This disk-plow “will penetrate the soil to the desired depth by its own natural draft with the minimum degree of friction and outlay of force.” (Lines 21-23) Illustration is included.
Date: June 30, 1891
Creator: Cleveland, George P.
System: The Portal to Texas History
Horse Detacher. (open access)

Horse Detacher.

Patent for a new and improved horse detacher. This design consists in "[t]he combination of the whiffletree-support, the whiffletree, the hinge connecting such parts having its upper and lower plates secured, respectively, to the whiffletree and its support and jointed at their rear edges, and the arm or lever extended forward from the upper plate, whereby upward draft on said arm or lever will turn the whiffletree backward from its normal position to release the traces" (lines 91-100).
Date: June 10, 1890
Creator: Harrison, George W.
System: The Portal to Texas History
Rotary Plow. (open access)

Rotary Plow.

Patent for improvements in rotary plows which can be used as a subsoil-plow or it can be converted into a cultivator. The “purpose is to provide a novel gang-plow capable of cutting the soil at different depths, as circumstances may require, and in which the angle at which the plows enter the soil may be varied.” (Lines 18-23) Illustration is included.
Date: June 30, 1891
Creator: Cleveland, George P.
System: The Portal to Texas History