US1305646A

US1305646A - Gas-meteb

Info

Publication number: US1305646A
Authority: US
Publication date: 1919-06-03
Anticipated expiration: 1936-06-03

Description

E. S. DICKEY.

GAS METER.

APPLICATION FILED MAR. 20. 1918.

Patent-ed June 3, 1919 3 SHEETS-SHEET l.

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ma Woo gwuentz Emm/ j atbozweg E. S. DICKEY.

q GAS METER. APPLICATION FILED MAR. 20:

Patiente/d June 3,'l919.

3 SHEETS-SHEET 2 mot-2,646.

aktot mma E. S. DICKEY GAS METER.

APPLICATION FILED MAR.20, 1918. 1,305,646. Patented June 3, 1919.

' a SHEETS-SHEET 3.

ATEN i FICE EDMUND S. DICKEY, OF BALTIMORE COUNTY, MARYLAND, ASSIGNOR TO AMERIQAN METER COMPANY, ING, OF NEVET YORK, N. Y.,' A CORPORATION OF DELAWARE.

GAS-IVIETER.

Application med March 20, 1918.

Ta aZZ whom it may concern.-

Be it known that I, EDMUND S. DICKEY, a citizen of the United States, residing in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Gas-Meters, of which the following is a specification.

This invention relates to improvements in dry type gas meters, and moi-e particularly to the valve construction of such meters.

In the present style of meters of two valve construction, the tendency has been to'increase the size of the valves with the object of securing the greatest possible valve area for the quick intake and discharge of gas, for the purpose of increasing the meter capacity, that is to say, increasing the number of Cubic feet of gas passed by the meter n a given time. Obviously this increase in the size of the valve has its limitations, and be comes practically prohibitive, for various reasons in connection with present form of valve construction.

It is my purpose primarily, bv these improvements, to provide fonr valves n two valve units, that is to say, two single valves, each formed into a double valve, and constituting a single valve unit, whereby I obtain the marked advantage of getting a valve area n a single meterequivalent to four valves in a meter, thus obviously enabling the meter to quickly take and discharge gas with corresponding increase in the capaclty of the meter.

The construction is such that the valves can be conveniently positioned on the valve table and connected by suitable channels and adapted to serve two diaphragms in a single meter, and by other channel connections, serve or control four diaphragms in one meter. j

In meters for which the valve construction about to be described is especially dej signed, there is a central partition in the meter casing, dividing it into diaphragm compartments, usually one diaphragm in 'eachcompartment, and the valve units, according to my construction, are located one on each side of the partition, and may be adapted, by suitable channel connections, as

just stated, to serve or control either one diaphragm in each compartments, or two in each compartment, as the case may be.

The angle of mounting the valves upon the valve table, in my improvements, does net Speciication of Letters Patent.

' Patented June 3, 1919.

Serial No. 223577.

differ from that of mounting the valves in the ordinary two valve style, and in both instances, the valves are mounted at 90 for reciprocal action in coordination with the diaphragms on each side of the meter partition, which manner of mounting is to prevent the rotary parts of'the meter from at any time being on dead center.

Another object of my invention is to provide a valve in which, or through which, double valve area is obtained, with the use of butone crank and one valve arm, and this without increase in the valve Stroke, or length of travel of the valve.

Another object of the invention is to so construct the valve and valve seat, that double the valve area is obtained with the consequent advantages of quick intake and discharge of gas, and corresponding increase in meter capacity, with only approximately one-half increase in friction of the valve in its reciprocation, over two separate single valves now commonly employed in two valve meter construction-a very important consideration when it is realized that the elimination of friction reduces the resistance of the meter resulting inincreased capacity of the meter, under a given loss of pressure n operation. In the construction wherein I greatly reduce friction, in proportion to the valve area, there is incident a reduction in the number-"of valve surfaces of the valve seat, thus reducing the number of grinding surfaces between the seat and the valve, which reduces the liability of the so-called cutting action on the valve faces, due to the slid-ing motion of the valve.

A very important eonsiderationin valve construction, particularly n the construction of valves for large meters, is the tendency of these valves'to warp or otherwise become distorted, thus destroying the perfect fit which is required between the surfaces of the valves and the valve seats, with the connecessity for the use of double or triple cranks on the valve operating shaft for effectng multi-valve movement.

A still further object is to provide accurate guiding means for the valve on its seat, and to so construct the guides that they' will be self-cleaning and kept free from the gumin-ing or sticking efects which would otherwise result from the gas condensates or heavy oils. V v

In the accompanying drawings, there is shown only enough of the meter casing, Valve table and channels to show the relatve position of the valvesto these parts, the invention disclosed n this application, as before stated, residing more particularly in the valve construction, and it will be understood that suitable channels may be provided below the valve table and n communication with the various ports in the valve seat, so that the valves may be adapted for supplying, under the control of a single valve arm for each valve, either two diaphragms located one in each diaphragm compartment, or two diaphragins in each compartment.

Figure 1 is a top plan view of a meter with the top plate removed and the valve housing broken away to show the position of the valves on the valve table.

Fig. 2' is a cross section of one of the valves shown n Fig. 1, taken on line a-a, showing the valve n position on its seat, wherein communication is established between a diaphragm channel and the outlet channel, and between the space above the valve table and the casing, or diaphragm compartment, below the casing, the wrist pin n this view, being shown on the front flange of the valve;

Fig. 3 is a longitudinal section taken on line b-b of one of the valves shown n Fig. 1, showing the manner of supporting and guiding the valve on the valve seat.

Fig. 4 is a top plan view of a valve seat.

Fig. 5 is a cross section of a valve shown n Fig. 1,'the position being that n which the communication between the diaphragm and outlet, and between the casing or a diaphragm compartment and outlet, is cut off, the wrist pin n this form, being shown located centrally n the dome portion of the valve.

Fig. 6 is a similar view of one of the valves shown in Fig. 1, slightly modified n the particular that the wrist pin for connection with the Valve operating arm, is shown on the rear flange or ledge of the valve, the position of the valve in this form being such that communication between the space above the valve table and a diaphragm, and the space between the meter casin and the outlet, is established.

Re erring to the drawings, the numeral 1 designates the meter casing, which may be,

in all essential respects, like meter-casings n common use, except n the particular of external dimensions, which I am able to greatly reduce, relatve to the meter capacity, by reason of the novel construction and arrangement, the meter casng being substantially of the same dimensions as the ordinary meter casing, with the exception of slight increase in the comparatively unimportant dimension of depth. The numeral 2 designates the back and 8 the front of the casing, and 4: the sides, which sides are provided with the usual intake connection 5, and outlet connection 6.

The numeral 7 designates the valve table and 8 the flagstas, extending through the table from the bottom of the meter, not further illustrated in this application, and it need only be said here that these staifs are connected by suitable flags to daphragms below'the table, and are designed to carry the usual arms linked to the valve operating shaft 9, which, in'this instance, is provided with a single crank 10, to which are connected the valve arms 11, which are n turn connected in the form shown in Figs. 1' and 2, to wrist pins 12, on the valves.

Each valve and its seat, is identical with the other, and consequently a detail description of one will serve as a description of the other. The numeral 13 designates the valve, oblongand generally rectangular n shape, and formed with a dome portion 14, and front and

rear flanges

15 and 16, the fianges serving, n the reciprocation of the valve, to cover and uncover the diaphragm and

casing ports

17 and 18, respectively in the valve seat 19, to alternately establish communication between the diaphragm channels 17" and outlet channel 18' and between the meter casing or diaphragm compartments, and the outlet, through the outlet port 20 n the valve seat, which port 20, as shown n Fgs. 2 and 6, is never entirely closed, there being shown in these gures two opposite extreme positions of the valve on its seat.

The valve seat is formed with two parallel side bars 21, front and rear bars 22, and two intermediate bars 28, and a central transverse bar 24, forming between them the diaphragm port 17, the outlet port 20, and the casing port 18. The side bars 21, and bar 24 are extended beyond the bars 22, and the upper surfaces of all of the described bars are smoothly ground to form suitable bearing surfaces for the valve, and the surfaces are all in the same plane. The side bars 21 forin hearings for the lower edge 25 of' the sides of the valve, and I provide the dome portion of the valve with a central rib 26, which has a bearing upon. the bar 24, which rib 26 divides the valve into two compartments 27 and 28, and the bar 24 divides the Valve seat.

In the form of valves illustrated, I use n a single meter, two valves 7 and" fonr diaphragms with suitable channel connec tions, which is in a given unit, equivalent to four valves in capacity for control of the gas into and out of the meter. In the arrangement just indicated, channels are provided connecting with the diaphragm ports and outlet ports of a valve on one side of the partition, and with corresponding ports of the other valve on the other side of the partition.

In adapting the valves for control of two diaphragms, one on each side of the partition, I arrange the channels to servetwo diaphragms and their compartments, in-' stead of four diaphragms and their compartments, it being understood, of course, that the How of gas into and out of the diaphragms and their compartments is controlled through the valves.

Having thus fully described my invention, what I claim is 1. In a gas meter, n combination, a valve seat whose dimension transverse to the direction of the line of travel of the valve on the seat, is greatly 'in excess of its length, and having diaphragm, casing, and outlet ports, coextensive with said dimension, whereby greatly increased valve capacity is obtained and a valve on said seat, and means for operating the same.

2. In a gas meter, n combination, a valve seat, whose dimension transverse to the direction of the movement of the valve on said seat is greatly in excess of its length, and having diaphragm, casing and outlet ports, coextensive with said dimension, whereby increased valve capacity is obtained, and a valve adapted to slide on said seat, a valve operating shaft, and connections between the valve and operating shaft.

3. In a gas meter, in combination, a meter casing having a partition therein dividing it into diaphragm compartments, a valve seat on each side of said partition, each of said valve seats having the dimension transversely of the line of travel of the valve on the seat, greatly n excess of its length, and having diaphragm, casing and outlet ports, coextensive with said dimension, whereby increased valve capacity is obtained, and a valve itted to slide on each seat, an operating shaft having a single crank and connections between the crank and the valves.

- 4. In a gas meter, in combination, an ob: long valve seat having side bearing bars and a central bearing bar, and diaphragm, casing, and outlet ports, and a valve on said seat having side portions bearing on the side bars and an intermediate rib designed to bear and travel on the central bar.

5. In a gas meter, in combination, a valve seat, a valve table, guide rails located at opposite sides of the valve seat, and separated therefrom and mounted on th'e valve table, a valve adapted to slide on the valve seat and having brackets coperating with the guides, whereby the valve is guided on its seat.

6. In a gas meter, in combination, a valve seat, a valve table, a guide rail located at each side of the seat and separated therefrom and mounted on the valve table and provided with a laterally extending upper portion, a valve designed to travel onthe valve seat and provided on each side with an angle bracket having a portion underlying the upper portion of the guide rail, whereby the valve is guided on the seat.

In testimony whereof I aiix my signature in presence of two witnesses.

EDMUND S. DICKEY.

Witnesses:

FRANK Gr. BRERETON, TITIAN W. JoHNsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ZD. C.