US39907A - Improvement in dry gas-meters - Google Patents

Description

PATENTED SEPT. 15 1863'. J. B. FISK. DRY GAS METER.

. =7 FPO STATES PATENT OFF-1012.;

l Specification forming part of Letters.Paten t,No. 39,907, dated September 15,1863, antedated l Y g u l ebrnary13,1863. v 1

To all whom it may concern.

Be it "known that I, JOSEPH Fish, or

Salem, in the county of Essen and [State of Massachusetts, have invented a; new and use-,

- ful: Improvement in GasMeters; and I do hereby declare that-the following is a fulLelear, and ex'act-descrip;

perati'onof Valves of tion thereof, referencebeing had to the accompanyingdrawings, forming part of" this specificatimi', in'whi ch- Figure -1-is a vertical longitudinal se'ctionoi' a gas-meter with myiniprovement applied to" it. Fig.-2'is"'ahorizontal seetion through the register-gear cliamberi Fig. 3'is, a plain of the" valve within' the gas-chest andon its-"seat. Figi iis 3/ vertical section ofFigJ3. Fig. 5

Figs. 6;

is an under side view of the valve. and 7'are upper andnnder side views'of the seat. Figs- 8, 9, 10, 11, and 12 "are views of modifications oi' 'thie'in'vention;,I

figures indicate like parts.

The same letters of rei'erencein'thefseveralf The nature of my invention consists "in a gas-meter val've which, while operating over the ports of its seat, is so controlled'tha-t all of its sides maintain a parallelismwith the sides of the several ports of the seat, and at the same time every part of th'eworking sur: face of the valve describes small circles the radii of 'whiclrare equal to the radius of the eccentric or crankwhich produces the motions in the valve, said radius being about equal to the width ofthe ports. Thus every part of the working surfac'e' of the valve-seat is traversed'and 'wornequally;

It consists, seconthin the combination, with; the' eccentric 'or crank, of the" annular cross and open guides, the same being' one means for controlling the eccentric motions offlt he valve. is

It consists, third, in so disposing the g'asports 'o'f the valve-seat that they .inclose'a. central "discharge-passage, in combination with a valve constructed. with'a rim on its under side, whereby the sediment which collects on the valve-seat is scraped 011' and discharged into thecentral passage, and also the influx and effluxof the gas take place, on opposite sides of-the center of the valve-seat, simultaneously,

To enable others skilled in the art to make, and use my invention, I will proceed to'describe its construction and operation.

' directors 1 I I Q Josnmri EIsK ,i "O F SALEM, arfassAoHUIs' 'TT's; j

i i aevemem IN DRY GAS-ME ERS. I

The operation of the diaplira gms ot "the meter which is represented in the drawings is the same as that of inany meters in usethat is. the gasalternately presses against op posite sides of eachdiaphragm, and while the gas is entering 'the space'or chamber on one side of a diaphragm it is passing out of the chamber on the opposite side. A is a valveseat, of hexagon shape, an

' with six gas-ports, a a a u e o through it,- said portsheingarrangcd round a central hexagon shaped" discharge-orifice, b, which terminates in a rcircle and connects with the outlet B of the gas meter. At ;one side of the, seat, and 'outsidebf the binding-line of the" working-surfitce thereof, a right-angle inletpassage, 0, is formed, said. passage leading horizont illy and vertically through the seat into ages chest, 1).. This valve-seat 'is'ar ranged "in the center of the-partition 'E,'wl .ieh dividesthe diaphragm-chambers F F F? E? F Eifr'om the registeringgearing chamber" G, audits ports leading into the diaphriitgim chambers-that is, three by means of curved and three by means of 'pipes' J as agon-shaped valve, w m

J, 'pro ecting' from its under'surface, said rim inclosing a hexagon-shaped chamber, J?,'-ofaii area in any direction sutticient to inclose the whole of one port, about two thirds of another, and about one-third of another, while one of [the remaining three portsis wholly-open to 'the infiowing gas, anotherabonttwo-thlrds open, and another about one-third open. The" "width of the rim of the valve is suificientt'to" cover the ports of the seat with a, slight lap,

"The top of the.val\ 'e has an-open guide,K.K, I at twoof its corners, said corners being diametrically opposite one another, andin the center -'ot"the hack of the valve is iormeda circular socket, d, fora crank-pin to set-in D is a gas chesh'ofhexagon shape. and witha permanently fitted.- top. At opposite ends,

and from the base of this chest, ears-e 6' pro--' ject horizontally, said ears restingupon exte'n- .sions of the valve-scat, and being fastened" theretohy means of screws f f; Fromopposite ends of the chest, on the inside, and wright angles to the guides K K,-other open guides,

M M, project a short distance,and from the center of the top of the chest a vertical stuff ing-box, N, extends'np'ward, saidstulfing-box leading out of the'gas-chmnber oi the chest.

In the guides K K and M M a cross, 0, is fitted loosely, the arms of said cross terminating in a central ring, and being shorter than the guides. Down through the stuffing box and the ring ofv the cross a shaft, P, with a crank or eccentric, h, at its lower end, and acrank, g, at its upper end, extends,- the pin 01 of the eccentrich entering the socketd in the center of the back of the valve, and the pin j of the crank g passing through the iuner'ends of the connecting-arms Q Q Q of the diaphragr'ns.

Fro'm't'he foregoing description itwill be evident that it the valve occupies the position shown in Figs. 1 and 3 the gas will, when let on, flow into the gaschest through the passage O, and therefrom through the ports a a a pass into three of the diaphragm-chambers that is, to the full capacity of the port a, about two-thirds the capacity of the. port a, and about one-third the capacity of the port 'a'i-and thus, through the motion imparted to the diaphragms and the intermediate. connecti'pns, set the valve in operation. The valve, bemy; set in motion in the direction of the arrow 1 is caused to perform ,by the'crank or eccentric,

- aneccentrie movement over the ports of the. seat, and in making its movements every part of rim ineloses a chamber in the valvev and the discharge-orifice of the .seat, every part of the working-surface ot the valve and seat will, while of necessity nearingequally, be

- kept clean of sediment, &c.,.the sedimentary deposits being swept by the motions of the valve into the discharge-orifice of the seat.- ln the motions of the valye, it is prevented from turning out of proper relation to the ports by '.-means of the cross 0 and the guides K K and,-

M M, and the ports a a a a 01, a are successively openedfully to the inflowing gas; but when the port a is fully open to the inflowing gas-.and introducing the gas into the outer diaphragm-chamber F the port a is fully open tothe outflowing. gas of the inner diaphragmchamber F and when port a is open to. the inflowing gas and introducing the same into the-inner diaphragm-chambers F port a is opento. the outflowing gas of the outer diaphragm-chamber F and when port a is open to the inflowing gas and introducing gas int) the outer diaphragm-chamber F port a is open to the outflowing gas of one of the inner diaphragm-chambers F and vice .vcrs I, as

respects the entrance and exit of the gas to and. from the diaphragm-chambers when the ports a a. a are fully open to theinflowing gas. The gas, of course, in discharging from the diaphragm-chamber circulates in the .In Figs. 8 and 9 means differing from the cross 0 and guides -K M are shown for keeping the sides of thevalve parallel to the sides of the seat while its surface is performing an eccentric movement over the ports of the seat and every part of its working-surface describing small circles. In this modification it will besee'n that the seat of the valve is square and the gas-ports difl'eren'tly disposed from what they are in Figs. 6 and 7 also, that the valve is moved from its under side by means of aneccentric, the crank-rod of which is to extend down through acent'ral tube of a gasmeter and connect wi th diaph ragms in a proper manner by means of its lower eccentric or crank. The motions of'the valve transversely and longitudinally are maintained by means of a T-shaped'guide-rod, R S, which Islides longitudinally with the valve, while the valve slides transversely on it.

In Figs. 10 and 11 means differing from both the cross and the T-shaped bar are shown for maintaining the parallelism of the sides of the valve with the'sides of the ports while every part of its working-surface is describing small circles. It will be observed that the disposition of the ports of the seat is different from that of either of the other plans referred to, but thatthe eccentric is applied in the same manner as in Figs. 8 and 9. There is provided to maintain the specified motions of the valve a sliding yoke, U, which fits around a central hub, u, on the under side of the valve, and presenting two stops, '0 c, which play in longitudinal slots of'the valve-seat as the I valve performs its movements.

1 have shown and described several forms and constructions of valves and seats and modes of arranging the same; but, under the first clause of my claim, 'I do not limit myself .to any particular form or construction or mode of arranging the valve and seats, nor to any particular means for producing the motions of the valve, but intend to 'cover, broadly, the combination of the motions, in. a gas-valve, which are specified in the first clause of the statement of the nature of thejuvention.

What I claim as my invention, and desire to secure by Letters Patent, is-q 1. The combination of a rotary crank or ec centric and guides and stops K K M M O,

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