Identifier: s01philosophicalmag56londuoft (find matches)
Title: The Philosophical magazine; a journal of theoretical, experimental and applied physics
Year: 1798 (1790s)
Authors:
Subjects: Physics
Publisher: London Taylor & Francis (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: Ontario Council of University Libraries and Member Libraries

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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. Fia.7.
Text Appearing After Image:
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 G.The water being displaced by the entrance of the gas, and theequipoise being disturlied, the interior cylinder will move on itsaxis towards the left hand, till the compartment G is filled withgas, the water pa

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