US21663A - Improvement in gas-meters - Google Patents

Description

UNITED STATES PATENT OFFICE J. E. FISK, OF SALEM, MASSACHUSETTS.

IMPROVEMENT' IN GAS-METERS.

Specification forming part of Letters Patent No. l l ,663, dated October 5, 1.*958.

To @ZZ whom) it may ccncern.-

Be it known that LJosEPH E. FIsK,ofSalem, in the county of Essex and State of Massachusetts, have invented an Improved Machine or Meter for Measuring Gas; and I do hereby deelare that the same is fully described andrepresented in the following specification and the accompanying drawings, of which- Figure 1`represents a vertical section ,of the said meter, showing most of its parts in their peculiar arrangement. Fig. 2is a view of the oor of the upper chamber or reservoir, A. and shows the valve-seat with the position of the tubes con neeting the chambers and sacks with the valve of the meter. Fig. 3 represents'the lower face of the valve. Fig. 4 its upper face, and Fig. 5 a vertical section of the said valve. Fig. 6 is a view of an expanding case with its sack, guide-wire, &e.

In the said drawings, A denotes the upper gas chamber or' reservoir; B, t'hervalve-seat, and a b c d the tubes or passages connecting the valve-seat with the working parts of the meter. On the valve-seat B rests y the valve C, secured by the square socket s to the crankshaft l),which passes down through the valveseat and into the chamber E, and through the partition K, and into the chamber H,.it being connected with the cranks e and f, and the operative parts as will be hereinafter described.

Into the orifice G, in the upper face of the valve,is inserted the supply-pipe F, which may be taken out of the meter by means of the movable nut 71, to which it is fastened, such being for the purpose of removing and cleaning the valve. On the upper part of the said" valve is a screw or worm, i, which operates the pinion jot the register-train ofrgears G, which should be properly adjusted to record the number of cubic feet of gas passing through the meter.

E and H are the lower chambers of the meter, in which operate the flexible sacks I and J of the flexible eases M N.

K K represents the partition between the chambers, it being formed with two bends or niches, as shownl in Fig. 1. On the horizontal part of the partition at L is a box, through which the crank-shaft should work air-tight.

c andfare the cranks,which are set at right angles with each other.

k and lare connectingrods connecting the cranks with the flexible cases M aud'N.v These cases (see Fig. 6) are each made of tin or metal plates hinged together at their edges, as denoted by the letter m in. the drawings. They may be provided with the guide'wires O O, to regulate the form of the sacks and cause them to expand equally, while the cranks prevent their expansion beyond a given point, the same serving to secure uniformity. in the amount of gas measured at each revolution. The guidewires O O depend from the sides of the chambers as at u, and are, carried across the faces of diaphragms at o o, where they ar'e held in place by the startspp. The pipe P connects the reservoir A with the burners.

With this combination of the several p'arts ofthe meter when the valve C is adjusted, as shown in Fig. l, the gas ony being let into the pipe F will tlow in the direction of t-he arrows Iaiddown in the drawings. Undersuch circumstances the orifice marked q in the valve opens into the passages a and b of the valveseat. 'The gas flows through the tubea into the sack I and through the passage b into the lchamber E. The pressure in thesack Iand the cham ber E expels the gas from the chamber H through the tube @,and from the sack Jthrough the tube d, and the orifice 1" in the valve into the reservoir lA. As the sack I distends and the sack J is compressed, a corresponding movement regulated by th`e guide-wires is made in the cases M N and the connections k Z, which revolve the cranks, the same causing the valve C to be revolved upon the valveseat. (See Figs. 2 and 4.) This revolution of the valve cuts ofthe gas first from the sack I,

which is now full, letting-it on the chamber H, then from'the chamber E, letting it on the sack J, which is now empty, whilelthe oriee r in the valve allows the pressure of the gas in the sack .I and chamber H to expel the gas from the sack I and the chamber E, thus reversing the conditions indicated in Fig. No. 1. As the sack J distends and the sack I is compressed, the valve is still further revolved un til the conditions of Fig. larereproduced. The valve revolves vsteadily in one direction, always connecting a sack or` chamber at each quarterrevolution, as it cuts ofi' the one bcfore; hence, the connection with the supplythe sacks'in case either may lbecome leaky or injured.4 I am not obliged to' reject the 'solid parts, as is the case when bellows sacks are used. Furthermore, the arrangement and application ot the tube F and the valve C and 'the case of themeter enable me to easily gain iecessto .the valve whenever it may be necessary to clean it.

I do not elaimthe employment of two Hext ble bellows/in two separate chambers. n Nor do I= claim themode of constructing the fiexible bellows as exhibited in the United States ,Patent-'No 9,591, wherein each bellows isv made of two metallicshallow dishes or partitions joined at their kedges vbyla flexible connection, This diiers' essentially from my in- .vention whereinasack, I or J, separate from .and arranged within a flexible inclosing-case, M or N, is employed as in my invention, the

sack alone constitutes thegas-receiving charnfber, and can be readily removed from its llexible casewhenever necessarywithont requiring the inclosingcase to'be removed from the met-er. What I do.l claim is- 1. The above-described improved arrangemen'tof the partition K and the shaft D, the

eranks,lvalve C, and valve-seat B,-with respect 'to the chambers .or passages a b e d, the same enabling one E, H, and A, and the pipes shaftDonly necessary to theoperationof the valve by Lthe two sacks I and Jv.

2. Combining with each flexible sack I J a flexible incl-osing-case, M or N, arranged so as to operate therewith, as specified.

3. The arrangement and application of the .pipe F withv respect to the valve C, and the case of the meter, the same being in manner and for the purpose as specitied. In testimony I have hereunto set my signature. y u

JOSEPH E. FISE` 'Witnessesz A w THos. H. JOHNSON, AUG. STORY.

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