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Safety-Valve.
Patent for an improved safety valve for boilers that consists of a valve chamber with a socket at its bottom, a valve seat with a steam outlet, a valve in the socket, a steam inlet tube that passes through and below the valve, a piston mounted in a guide chamber, a spring that holds the piston, a guide chamber with a valve seat, and a steam cylinder.
Date:
October 10, 1893
Creator:
Cameron, Charles Hoyle
System:
The Portal to Texas History
Music-Holder.
Patent for an improved music-holder. The music-holder is comprised of a base adapted to be secured to a music rest with a standard pivoted on the base. The standard is fixed with a spring-pressed shaft in order to press the book to the music stand.
Date:
October 27, 1891
Creator:
French, Clarence E.
System:
The Portal to Texas History
Churn.
Patent for an improved, strong, durable, and simple churn that produces butter quickly and with much use of power. It has a slide rest with a rotary driving spindle on one end and guide pulleys on the other end, a slide-block that slides on the end of the slide rest, a turn-peg with a ratchet-head on the slide-block, a pawl, and a chord that attaches all these parts.
Date:
October 23, 1894
Creator:
Roark, Calvin M.
System:
The Portal to Texas History