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vided with a central opening and with a number of perforations surrounding the same, its remaining end being closed by a re- movable cover plate having a central boss 5 and a bore therein, a T-coupling threaded around said boss, a valve casing in communi- cation with the interior of the T coupling, a hollow conical valve in said casing and hav- ing ports establishing communication be- io teen its interior and the interior of the casing, an air pressure pipe threaded into said casing above the valve, a gas and air
pressure pipe threaded into the discharge end of said valve, a gas supply pipe entering the shank of said T-coupling, means where- 15 by said valve may be rotated, and means for retaining the same within its seat. In testimony whereof I have hereunto set my hand in presence of two subscribing wit- nesses. DR. JAMES MADISON GILBERT. Witnesses: M. L. ROBERTSON, BEN -GARNER.
Copies of this patent may be obtained for five cents each, by addressing the " Commissioner of tentst, Washington, D. C."
Gilbert, James Madison.Combined Supplemental Gas Reservoir and Burner,
patent,
October 13, 1914;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth857904/m1/7/:
accessed July 7, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.;
crediting UNT Libraries Government Documents Department.