US910514A - Fitting for water-meters. - Google Patents

Description

H. I. DILTS.

FITTING FOR WATER METERS.

APPLICATION FILED DEO.9,1907.

91 0,5 14. v Patented Jan. 26, 1909.

2 SHEETS-SHEET 1.

WITNEJJEJ INVENTOR "B BY H. I. DILTS. FITTING FOR WATER METERS. APPLICATION FILED DECLQ, 1907. r 91 0,51 4, Patented Jan. 26, 1909.

2 SHEETS-SHBET 2.

g 3 M m HENRY I. DILTS, OF LONG ISLAND CITY, 'NEW YORK, COMPANY, OF LONG ISLAND CITY, NEW YORK, A

Island Cit ternally to engage UNITED STATES ATE T OFFICE.

ASSI GN OR TO THE NEPTUNE METER CORPORATION OF NEW JERSEY;

FITTING FOB WATERFM ErERs,

To all whom it may concern:

Be it known that I, HENRY'I. DILTS, a citizen of the United States, residing at Long in the county of Queens and State of ew York, have invented certain new and useful Improvements in Fittings for Water-Meters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as othersskilled in the art to which it pertains to make and use the same, reference being .had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in fittings to be used in connection with water meters or other translating devices.

In the drawings which accompany this specification, Figure 1 shows a side elevation o the device. same. Fig. 3 shows a side elevation in section taken on line ;z;w of Fig. 2. Figs. 4, 5 and 6 illustrate modifications of my inven-' tion, the same being partial sections similar to Fig. 3. Fig. 7 illustrates a further modification embodying the preferred form. Figs. 8 and 9 illustrate details of the modification illustrated inFig. 7, and Fig. 10 illustrates across-section of the case and plug, illustrating the position of the by-pass.

Similar letters of reference are employed in all of the above described views to indicate corresponding parts. a

In the drawings, a represents an ordinary valve casing or fitting adapted to be connected to'the service p' e in the usual manner, thevalve casing Feing rovided with a ground chamber b preferab y tapered for the reception of a ground core or plug 0, said ground core or plug being provided with direct flow port d and a reverse flow port e, which are designed to engage and register with the inlet f andoutletg in the valve casing or fitting a. The upper end of the ground core or plug 0 is screw-threaded exwith the nut h which is internally screw-threaded for the reception of a water meter or other translating device. The nut k may be locked to the 'core or lug c in any convenient manner, Y preferably y means of the set screwi as shown.

is an extension formed on the'core or plug 0 in any convenient manner, near its lower extremity, and designed to engage with a recess'lc which is conveniently arranged in the Specification of Letters Patent. Application filed December 9,

will enable Fig. 2 is a plan view of the to the weight of the the weight of the superposed Patented Jan. 26, 1999. .1907. Serial No. 405,692.

the core 0 from bein turned further than is necessary to shut off t is water in theservice pipewhen it is found necessary or convenient to remove the water meter or other translating device from the nut h, which is secured to the upper part of the core 0;

Z is a. cap internally screw-threaded and engaging with the lower'part of the valve casing or fitting a. Inter osed between the cap Z and the under side of the fitting a is an annular gasket m which has a flange a toreceive the cylindrical end 0 of the core or plug 0. As an additional safety guard, and also to provide a yieldingpressure to hold the a to prevent lower extremity of the valve casing or fitting core or plug 0 upon its seat, I also interpose a supplementary annular gasket 79, between clearly indicated in Fig. 3.

The normal position of the valve casing, when inuse, is as indicated in Figs; 1 and 2, so that the meter oro'ther translating device may be attached to the nut 71. In this position, it will be noted that the core'c with the meter or other translating device secured thereto, will have a downward'tendency due parts, this tendency being to unseat the core from its conical seat. In order to counteract this downward pres-, sure or tendency, to unseat, I lead a bypass g from the inlet-f into the lower end of the casing, so that the pressure from the inlet may pass into and completely fill the lower cavity around the lower end of the core or plug 0. The tendency of the ressure thus introduced, is to overcome t e downward pressure upon the core 6, due to its weight and parts. If, however, this pressure were permitted to exert itself over the entire undersurface of the plug 0, the differential pressure would be suf-,

cient to sofirmly seat the plug within'the casing that it would be practically impossible to turn such plug, but in order to out such face of the core or plug 0, I have as heretofore described, provided the annular gasket m with the u wardly. extending flange a to receive the cylindrical end 0 of the core 6. In this manner, I effectuallycut off the access of the pressure through the port g into the lower cavity from the broad surfac'e'of the lowerend of the plug and only permit a fraction .of such pressure to become eifective.

the cap Z and the lower end of the pl-.g' c as pressure away from the entire u-nder surr leading gasket is.

In practice, a water meter or other translating device is screwed to the nut h in suchv port (1 is in regis-' manner that the direct flow try with a passage within the meter, and the reverse flow port 6 is in registry with the discharge port of the meter. With the nut locked in position by means of the screw 'i as shown, the act of screwing the meter home into the nut it will result in turning the plug 0 so that its orts d and a will register with the inlet f an outlet 9, and thus permit a free flow of water from the main to the meter. If, now, it is desired to remove the meter from the casing a, the unscrewing of the meter from the nut h will rotate the lug 0, so that the orts d and e will be out oi registry with the inlet f and outlet 9, thereby cutting off all flow of water through the casing, as well as through the meter. Further rotation of the meter will result in unscrewing the same completely from the nut h and thereby ermit the entire removal of the meter. I for any reason, the plug a should stick or fail to turn with the meter in the act of unscrewing the same, a pipe wrench may be a plied-to the nut h to turn it to the shut-o position before completely unscrewing the meter. have not deemed it necessary to illustrate a meter in connection with the fitting, for the reason that such meters are well known in the art, and as well as fittings of the general t e illustrated in the drawings.

11 Fig. 4, I have illustrated a modification, wherein the fluid pressure instead of being introduced through the b -pass q in thecas ing, as heretofore descri ed in connection with Fig. 3, is introduced through a by-pass through the face of the core c, and into the chamber is. This chamber is in the present modification is cylindrical as usual, and has an annular recess 7c near its lower end, which recess is provided with an annular In the lower end of the chamber 7c and resting u on the cap Z, is a disk-shaped piston s fitted c osely into the chamber k, and rendered water-tight by means of the gasket k The port r is so located in the face of the lug c that when said plug is turned to close the inlet f and outlet 9, such port r will still be in communication with the inlet and the chamber k, and in order to accomp 'sh this, I provide a partialliyl circumferential channel 1", in the face of t e plug, so that some. portion of said channel will always be in registry with the inlet Were not this precaution taken to ermit pressure at all times to enter the cham er 7:, 1f the plug a were turned to shutofi position, the pressure in the chamber is would radually dissipate and thereby permit the p ug c to drop away of its own weight from its conical seat in the c'asing,'and thus permit a leak.

In Fig. 5, the plug is subst antially the same as described in Fi 4, with the exception thatthe chamber is somewhat shallower, and has its lower end covered with a flexible diaphragm is of metal or other suitable matenal, said diaphragm being held to the lower end of the plug by means of a screw-thimble k. I also rovide a boss k upon the center of the cap upon which the'diaphragm 7c reacts in order to permit the pressure in the chamber k to elevate the plug 0.

In Fig. 6, the chamber and the port 1 are substantially the same as heretofore described, in connection with Figs. 4 and 5. In

this modification, I provide a diaphra m s, such dia hragm taking into and fitting closely to the c amber is. In this manner, pressure introduced through the port 1" will cause a suitable elevation of the'plug c.

In Fi 7, I illustrate my (preferred form, in which t e plug 0 ig provide with the bottom chamber 70, having the port or by-pass 1 leadmg from the exterior of the plug to said chamber. The cap I is screw-threaded to the lower end of the casing a, and hasupon its center an elevated boss I which forms a seat for the lower end of the plug 0. Within the chamber k, I locate the cugi-shaped piston 8 such piston being made 0 leather, rubber, or any material suitable for the purpose. Within the hollow portion of said cupshaped piston 8 I locate the split expansion ring t, its purpose being to maintain a close contact between the u wardly extending flange of the piston s an the wall of the chamber, so that there shall be no leakage between the chamber k and the space surrounding the exterior of the core bottom. The admission of the pressure throu h the port 1' through the chamer 7:: against t e inside of the lston s and theexpansion ring t, will result in-creating an upward tendency of the core '0, and maintain it upon its conical seat.

thus

Figs. 4', 5, 6 and 7, the core 0 is provided with a substantially annular groove u, about its head, the purpose being to remove the superfluous metal and to lighten the core to as great an extent as possible.

In the form of my invention as illustrated in Fig. 3, it will be noted that the pressure 7 which sustains the valve plug 0 upon its seat, passes directly from the inlet f to the lower portion of the casing, through the small bypass g, in which case, such pressure is exerted throughout all parts of the chamber formed by the lower end of the casing a, the plug 0 and the cap 1. I find this form of fitting of advantage where comparatively low pressures exist, inasmuch as the gasket m, with its flange 11, has sufiicient strength to withstand such pressures. However, where -the pres sure is very high,the followin disadvantage is found. just referred to, is confined to the bottom of the casing as illustrated in Fig. 3, and'results in an expansion of that portion of the casing which forms such chamber, while at the same time, it results in a. compression of the lower end of the plug and thereby produces a-leak between the lower portion the contiguous ortion of the conical seat in the fitting a. It might be presumed that this pressure would result in forcing the plug 0 further up into the fitting, so as to form a perfect fit, but it will be understood that the upper portion of the plug has already formed a fit upon its seat, and therefore, can vbe forced no further. This disadvantage, however, is of small importance where lower pressures exist, while the compensating advantage of cheapness of construction makes this form a desirable one.

These disadvanta es, however, are over-- Iustrated in Figs. 4, 5, 6

come in the forms i1 and 7, where the pressure necessary to maintain the lug c u on its seat, is confined entirely wit in the ead of the plug and against the cap, and should such pressure be sufficient to expand the head of the plug, it would result only in forcin a closer fit between the conical portion of tie head of the plug and the contiguous part of the fitting, At this point, it is well to call attention to the fact that the omission of the metal from the annular groove u, heretofore referred to, will, in a measure, compensate for any undue ex pansion of the head of the plug, and thereby obviate any tendency which might exist to so expand the head as to make the plug stick in the casing a, and this, by reason of the fact, that'the omission of the metal, so as to form the annul cation between the walls of the chamber 7c and that portion of the head of the plug which comes in direct contact with the seat in the casing.

I claim.

1. In afitting for water meters, the combination of a casing, and a rotatable lug fitted therein, and automatic means within the plug for transrnittin Water main to the head 0 said plug for maintaining said plug upon its seat' in said casing.

a water meter fitting, the combination'of a casing having inlet and outlet passages, an intermediate upwardly .taperin plug fitted to rotate in said chamber, sai plug having passa es therein for re istry with said inlet and out et passages, a c amber in the lower end of said plug, said plug also having a passage leading from its outer face into its chamber, automatic means fitted into the e pressure within the chamber.

a communicating passa of the plug 0 and ar groove u, breaks direct communipressure from the lower end of said plug chamber for transmitting pressure to afixed element of said casing, whereby, the exertion of such pressure upon said means will result in maintainrng said plug upon its seat in said casing.

In a water meter fitting, thecombination of a casing, and arotatable plug fitted therein, registering passages in said p ug and easing respectively, a cap screw-threaded to said casing to inclose said plug therein, a chamber in the lower end of said lug havin e throug the wall of said plu to its externa tion wit one of the passages in said casing, and means Within said chamber for transmitting pressure introduced into said chame ber through said passages for maintainin said lug upon its seat in said fitting.

4. n a fittingfor water meters, the comfitted ug and a chamber in the head of said plug, having constant communication with one of said passa es, and automatic means within said cham er for transmitting pressure therein to a fixed element of the casing, whereby, said plug is maintained upon its seat.

5. In a fitting for water meters, the combination of a ca ing, a rotatable plu fitted therein, registerin passages in said p ug and easing respective y, means for securing a therein, registerlng passages in said p casing respectively,

bination of a casing, a rotatable plug water meter or other translating device to i the upper end of'said plug, a chamber in the lower end of said plug, said chamber having a passage leading therefrom to the exterior face of said plug, for communication with the inlet passage of said fitting, and automatic means inclosed within said chamber for transmitting ressure to a fixed element of said casing, w ereby, said plug is maintained upon its seat.

6. Ina water meter fitting, the combination of a casing, and a rotatable plu fitted therein, registering passages in said p ug and casing, the passages in sa1d plugdeslgned for communication with a water meter fitted thereto, a cap screw-threaded to said casing to inclose said plug therein, a chamber in the head of said plug, said chamber havin acommunicating passage leading from sai cham ber to the exterior face of said plug and in constant registry with the inlet passage of said casing, a movable diaphragm fitted into said chamber and resting u on said ca whereby, pressure introduce throughsaid passage into said chamber will result in elevating said plug, and maintaining the same upon 1ts seat in sa1d casing.

7. In a fitting for water meters, the combination of a casing, and a rotatable plu fitted therein, registering assages in sai plug and easing respective y, a cap screwthreaded to said caslng to inclose said plug therein, and means inclosed between said face for communica:

'4 4' i 910.514. cap and plug to prevent excessive d ifierexcessive differential res'sure tipon the 10 ential pressure upon the end of said lug. cylindrical end of said p ug.

'f 8. In a fitting for water meters t e co m- This s ecification signed and witnessed Binati'on of a casm and a rotatabie taperm this feurt (1a.; of November, 1907.

g lug rovided wit a. cylindrical end fitte ghereiii, registering passages in said plug'and E Y casing, a cap secured to said casing, to' in- Witnesses: close said plug therein, and automatic means JAB. M. BURTON, secured between said cap and plug to prevent JOHNSON SHHMAN.

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