Resource Type

Language

Gearing (open access)

Gearing

Patent for improvements in gearing, "especially adapted for use in connection with wind mills and other devices" (lines 9-11) including illustrations.
Date: April 11, 1916
Creator: Wiggins, Hundley
System: The Portal to Texas History
Pipe Wrench. (open access)

Pipe Wrench.

Patent for a new and improved pipe wrench. This design consists, "with the stationary jaw provided with a shank and an inclined portion on the shank, of a movable jaw, also provided with a shank, having an inclined portion on it and pivotally connected to the stationary jaw, and a loop pivoted to the stationary jaw and engaging with the shank of the movable jaw, whereby the said two inclined portions are retained in working position" (lines 85-94).
Date: February 11, 1890
Creator: Bartlett, William George & McCoy, John William
System: The Portal to Texas History
Plow Attachment. (open access)

Plow Attachment.

Patent for a plow attachment, which holds the plow wheel in place.
Date: October 11, 1910
Creator: Dowdy, Ewell Monroe
System: The Portal to Texas History