A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Wrights improved governor,) the interior of which, however, is nearly filled by the eon-centric inlet and outlet pipes b and c. Immediately over the mouth of the inlet pipe, anddepending from the roof of the inner cylinder, is a parabolic piston d, which hangs within 193. the contracted mouth of the inlet pipe c. The interior cylinder is counterpoised by thelever and weights e e. Now, when the pressure of gas in this small holder increases,—that COAL-GAS. 389 is
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Wrights improved governor,) the interior of which, however, is nearly filled by the eon-centric inlet and outlet pipes b and c. Immediately over the mouth of the inlet pipe, anddepending from the roof of the inner cylinder, is a parabolic piston d, which hangs within 193. the contracted mouth of the inlet pipe c. The interior cylinder is counterpoised by thelever and weights e e. Now, when the pressure of gas in this small holder increases,—that COAL-GAS. 389 is, when the flow of gas through the inlet pipe exceeds that escaping from the outlet,—theinner cylinder rises; but in doing so, it carries with it the parabolic piston d, and thus con-tracts the orifice of the inlet, and consequently diminishes the ingress of gas. In this way,by adjusting the weights attached to the lever of the governor, and by always maintaininga pressure in the gas-holder greater than is required in the mains, the gas can be deliveredfrom the governor at any required pressure. In hilly towns, such as Bristol, Bath, Edin-burgh, &c., it is necessary to employ governors at different stages of elevation, in order toproduce a tolerably uniform pressure in the different districts. The necessity for this willbe obvious, when it is stated, that a difference of level of 30 feet
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
