Guide for Drive-Chains. (open access)

Guide for Drive-Chains.

Patent for a mechanism designed to prevent a guide chain from being displaced from the wheel(s) of its parent machine.
Date: May 17, 1921
Creator: Johnston, Horace G.
System: The Portal to Texas History
Stovepipe Attachment. (open access)

Stovepipe Attachment.

Patent for a new and improved stovepipe attachment. This design "consists of a receptacle formed in two parts, which are secured together around the stovepipe just below the point where the latter enters the chimney immediately above the stove. The object of [the] invention is to construct an attachment which may be readily secured to or detached from the pipe for the purpose of catching any dirt or soot which may drop from the chimney, thus preventing it from reaching the stove" (lines 14-24).
Date: May 17, 1892
Creator: Pearson, Harriet N.
System: The Portal to Texas History
Switch. (open access)

Switch.

Patent for a switch in which it can be “automatically operated by a moving train either for the purpose of opening or closing the switch, under the control of the engineer, who without stopping the train may open the switch and run his train onto the switch-rails or a siding without slowing up the train further than is necessary to avoid derailing the train when passing from the main line to the switch or siding.” (Lines 11-20) Illustration is included.
Date: May 17, 1904
Creator: Harris, Irvin F.
System: The Portal to Texas History