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Well Cover.
Patent for a new and improved well cover. This design "is to provide a new and improved cover for wells, cisterns, &c., which cover is so constructed and arranged that it can be moved back by stepping on a step in front of it, and is automatically closed when the pressure is removed" (lines 8-13).
Date:
September 8, 1885
Creator:
Bullock, Henry P. & Cook, Henry B.
System:
The Portal to Texas History
Thill-Coupling.
Patent for an improved thill coupling, one meant to "prevent the annoyance of nuts coming off, allowing the thill to come out of place" (lines 55-57). "It is also for the purpose of facilitating the changing of a pair of shafts for a tongue or a tongue for shafts" (lines 59-61).
Date:
June 8, 1897
Creator:
Kitching, David C.
System:
The Portal to Texas History
Harrow-Tooth Holder.
Patent for a harrow tooth holder, which allows some flexibility of the teeth based on soil conditions.
Date:
November 8, 1910
Creator:
Hoard, John H.
System:
The Portal to Texas History