UNT Libraries Government Documents Department - 3 Matching Results

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Water Elevator.

Description: Patent for a new and improved water elevator. This design "is to provide each bucket with a weighted back; also, in the manner of connecting the chains thereto, so that the necessity of the employment of a weighted wheel is obviated" (lines 20-24). This means that individual buckets may be removed and replaced, and construction becomes more durable and simple.
Date: December 28, 1880
Creator: Mayfield, William D.
Item Type: Refine your search to only Patent

Piano-Forte Tuning-Pin Lock.

Description: Patent for a new and improved lock for forte-piano tuning-pins. This design consists "of an elongated or oblong metal plate provided with a slot in a part of its length and having one of its faces roughened into serrations . . . which, together with . . . correspondingly-toothed hooks bolted to said plate, form a clamp to bind two or more tuning-pins of a piano together, to prevent them from turning as a set or independently" (lines 16-25).
Date: March 2, 1880
Creator: Norcross, Levi W.
Item Type: Refine your search to only Patent
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