. The Philosophical magazine; a journal of theoretical, experimental and applied physics . y, so as to allow this part with the cone g to riseand fall freely. O is the pijje which conveys the gas into the interior vessel. P is the e.^t pipe which transnwts tlie gas to tlie burners. Fig. 3 is a cross section of the \alve; the use of which is toprevent any gas from passing into the meter, unless a sufficientquantity of water is in the instrumeui. R is the inlet pipe to the partition, i the cup, k k the float,// the clip-pipe which carries off the superfluous water thatwould otherwise run over th
. The Philosophical magazine; a journal of theoretical, experimental and applied physics . y, so as to allow this part with the cone g to riseand fall freely. O is the pijje which conveys the gas into the interior vessel. P is the e.^t pipe which transnwts tlie gas to tlie burners. Fig. 3 is a cross section of the \alve; the use of which is toprevent any gas from passing into the meter, unless a sufficientquantity of water is in the instrumeui. R is the inlet pipe to the partition, i the cup, k k the float,// the clip-pipe which carries off the superfluous water thatwould otherwise run over through the inverted pipe D till it hadattained its level. Fig. 4 is the dial and pointer which is secured by a strongglass in a brass ring being soldered over it. Fig. 5 is a section of the counter, showing the wheels and stop. Fig. 6 is a section of the lever and crank in the trough. Fig. 7 is a cross section of the crank, the lever, the trough,the wheels, dial and pointer. The use of the counter is, to register the mnnbcr of revolu-tions 1 Tia 2 M~ J MaLuns Imprcv(d 0 as Mater. Mr, Malams Ga%-M^ter. 363 tions of the interior cylinder ; and, as the capacity of this isknown, and the number of teeth in the wheels adjusted accord-inglv, the dial indicates, on inspection, the number of cubic feetof gas that have passed through the meter since the counter waslast set. Now, supposing the exit pipe R is connected with the greatgasometer, or with the street niaiu, and that the gas is flowingin above the partition h of the detecting valve, and that there isa proper quantitv of water in the machine, the cup i will beelevated above the opening in t!ie partition by the float k, which,allowing the gas to pass through the inverted pipe D, fills thecentral chamber E, fig. 1 ; and, as the opening a is above thesurface of the water, the gas passes into the compartment water being displaced by the entrance of the gas, and theequipoise being disturlied, the interior cylinder will mo
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