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3 Matching Results
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Insect-Destroyer.
Patent for an insect destroyer, specifically made for the boll weevil insect. The purpose of the Insect-Destroyer is to provide a cheaper, simpler, and more convenient alternative to the existing boll weevil insect destroyers.
Date:
October 30, 1917
Creator:
Clement, Auther H.
System:
The Portal to Texas History
Lifting Device.
Patent for a new and improved jack. This design "relates to devices for raising fence-corners in repairing the same, and for lifting weights generally; and the object of [the] invention is to produce a simple and powerful device whereby a single operator can greatly increase his [or her] capacity for lifting heavy objects" (lines 8-14).
Date:
November 30, 1886
Creator:
McNabb, James M.
System:
The Portal to Texas History
Telephone-Switch
Patent for a telephone switch. "This invention relates to switches for telephone and more particularly to shifting devices for short-circuiting certain classes of lines, and the object is to provide a system of cutting off communication in what are called 'party' lines" (line 8-13). Illustration included.
Date:
April 30, 1907
Creator:
Mount, Timothy S.
System:
The Portal to Texas History