US459332A - Water meteb - Google Patents

Description

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(No Model.)

No. 459,332. 'Patented Sept. 8, 1891,A

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L. H. NAS. WATER METER.

No. 459,332. Patented sept. a, 1891.

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L. H. NASH. WATER METER.

No. 459,332. Patented Sept. 8, 1891.

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(No Model.) l

L. H. NASH. WATBR'METBR.

Patented Sept. 8, 1891.

UNITED STATES PATENT Ormea.

LEWIS HALLQCK NASH, OF SOUTH NORNVALK, CONNECTICUT, ASSIGNOR TO TIE NATIONAL METER COMPANY, OF NEIV YORK, N. Y.

WATER-METER.

SPECIFICATION forming part of Letters Patent No. 459,332, dated September 8, 1891.

Y Application filed March 14, 1890. Serial No. 343,843. (No model.)

To @ZZ whom it may concern:

Be it known that I, LEWIS HALLOCK NASH, a citizen ofthe United States, residing at South Norwalk, in the county of Fairfield and State of Connecticutfhave invented new and useful Improvements in Tater-Meters, ofv which the following is a specification.

The drawings illustrate a meter which embodies my present improvements in combinaio tion, and these drawings, in connection with the following description, are sufficient to enable others skilled in the art to employ and practice my said invention in forms which are at present preferred. Itwill be, however,

I5 understood that my present invention is by no means limited to the precise forms of apparatus herein illustrated and described, as various modifications may be made without departing` from its general principles or eX- zo ceeding the scope of the concluding claims.

My present improvementsrelate to fluidmeters; and they consist of certain novel parts and combinations of parts which will be particularly pointed out in the claims.

2 5 Inthe accompanying drawings I have illustrated one form of meter embodying my present improvements, in which- Figure l represents a vertical section taken on the line 'y y of Fig. 2, which is a horizontal 3o section, the piston beingremoved. Figs. 3, 4r, 5, and S are similar sections showing the piston in different positions. Fig. 6 shows amodificatien. Fig. 7 is a vertical section taken on the line .fr of Fig. 8, showing the connection of 3 5 the ports and passages; and Fig. 9 shows the differential register connecting-gear. Fig. 10 shows an enlarged view of the joint-bearing for the register connecting-arm.

The following is a description of the struct- 4o ures shown in the drawings: The cylinderA is formed with interior bearing projections h to hf", which inclose and bound wall recess Spaces e to c6, all opening into the case-chamber. The abutment B has projections g to g, inclosing and bounding recess-spaces f to f6. Referring to Figs. 2 and 7, each case-re.- cess has an inlet-port ct to a6 opening through the case-head into the inlet-passage D and a discharge passage or channel d to d6 con- 5o necting said case-recess with the corresponding abutment-recess in certain positions ot the piston Each abutment-recess has an outletport b to b opening through the case-head int-o the discharge-passage E, and eachabntment-recess also has a supply passage or channel c to c6 connecting said recess with the corresponding case-recess in certain positions of the piston. The piston F is in the form of a hollow corrugated cylinder forming exterior projections of a shape to make inter- 6o mittent j oint-forming contact with the casewall recesses and projections, while similar interior piston projections are of a shape to also make intermittent contact with correspondingabutment-recesses. Inits movement each piston projection enters in succession a corresponding case-recess, displacing the water therefrom in succession, and each lrecess is in snccessionlilled from the other side as the piston leaves it, therefore a description 7o of such action of the piston in one recessspace will give a complete description of the action of the piston in every other similar recess-space. When the piston is formed of a thin cylinder, as shown in Figs. 1 and 8, I 75 prefer to provide it at one end with a web F', as `shown in Figs. l and 7, which serves to keep the piston in form and as a convenient means to connect the registering apparatus thereto. i 8o I may arrange the inlet and outlet ports ras I shall now describe, or in any other suitable way. VThe inlet-ports ay to a6 are placed at one side of the points of the case projections, so as to open into the spaces outside of the piston, while the outlet-ports b to 56 are along y `the sides of the abutment projections, so as to open inside the hollow piston. The channel-passages d to d are arranged at the other side of the case projections and make the 9o communications between the case-recesses and the abutment-recesses for the escape of the water from the exterior measuring-chambers. The channel-passages c to cG are arranged on the sides of the abutment projections opposite the outer ports, so as to make the communication between the case-recesses and the abutment-recesses to allow of the inflow of the water within the piston.

I will describe the operation of the piston roo with reference to the case and abutment recesses c and f. The piston,being in the position Fig. 3, has just closed communication through the outlet-port a to the space e', and also closed communication between the spaces e and f through the recess-port c". The exlhaust-port h2is just ready to open into chamber f. The Water enters into the measuringspaces exterior to the piston through the inlet-ports a2, a3, a4, a5, and a6 and into the spaces inside the piston through the channelports c5 c, driving the piston in the direction of the arrow 2, during which movement the Water escapes from the interior spaces through the ports b', h3, h4, b5, and h6 and from the eX- terior spaces through the channel-ports d3 and d4, and the piston-lobe, entering the chamber e', displaoes the water therefrom. This action takes place until the piston reaches the position of Fig. S, when water enters through ports 0,', a2, a3, a4, and of and channel-ports c4, c5, and c and escapes through ports b2, h3, b4, h5, and h6 and channel-ports (Z2 and cl3. At this instant the piston has just made contact with the bearing-point h, closing chamber e and on the instant of opening channelport d to discharge the water therefrom into chamber f', from which it escapes through port b2. When the piston moves to position, Fig. 5, the chamber f is closed by the piston making contact with the bearing-point g of the abutment, and the water escapes through the port cl2, while the Water still escapes through the channel-ports d out at port b. In this position the water enters through ports a', a2, a3, a5, a, c2, and ciand escapes through ports h', b2, h3, h4, b, d', and du, driving the piston in the direction of the arrow 2 to the position shownin Fig. 4. During these movements the space e has been completely emptied of Water from one side of the piston-lobe and iilled from the other side, while the space j" has been nearly emptied and is being reiilled through the channel-ports c.. The water now enters ports a', a2, a, a5, a6, c', and c2 and escapes from ports ZJ', h2, b3, b5, h6, d?, and d6, driving the piston in vthe direction of the arrow 2 to the position shown in Fig. 3 completing the cycle of its movement. Hence in every movement every case-recess is filled and emptied, and combined pressures in the recess-spaces cause the piston to make its movement while it also controls the inflow and outflow into and from the measuring-spaces.

In the modiiication shown in Fig. 6 the piston is not of a uniform thickness throughout, as in the other cases, but its action is the same in all essentials.

In the construction shown Vin Figs. 1 to 6 the hydrostatical pressures inside and outside of the piston are nearly balanced by reason of the uniform thickness of the piston, while in the modification there is a greater excess of pressure tending to force the piston against the walls of the abutment, due chiefly to the unequal thickness of the piston.

The meter may be made of any desired number of coacting bearing projections, and it is not necessary that the piston and case projections should be formed of circular bearing ends symmetrically placed round the center of the case, as shown, but their form may be Varied. I have shown the ports as being placed in the lower head only; but it will be understood that they mayY be placed in the upper head only, or in both iitgjls, if desired.

I have shown my invention as applied to a meter the piston of which has an orbit motion, but no motion of rotation about its own center; but it may be applied in meters having a compound motion.

The register-connecting device shown consists of a gyrating arm j, having a ball-bearing in the case-cover G and its inner end loosely connected to the piston and its outer end connecting with and driving the registering mechanism. The inner end of the arm j is caused to move in a'circular path, and its outer end will therefore describe a similar movement, which is communicated to the dial. mechanism bya spur and an annular gear operating differentially. The spur-gear m is secured to the end of the armj and then meshes with the annular gear n, which has internal teeth greater in number than those of the gear m,which,being carried by said arm,has a non-rotating gyrating movement within the annular gear to revolve the latter. I-Ience the gyrating movement of the gear m will cause the gear n to rotate at each gyration a distance equal to the difference between the number of teeth in the two wheels. vIf desired, the relation of these gears may be reversed.

The joint in the case-cover for the gyrating arm is made as follows, viz: The case-cover has a recess to receive the ball-bearingj, and directly below it the cover also has a larger recess to receive a flexible diaphragm p, which incloses the said arm and is clamped to the shoulder of the ball-bearing by a nut i upon said arm to form with said arm. The joint with the case-cover is formed by a springring t', which is sprung in a seatin the recess upon the diaphragm in a manner to hold it in place.

Referring to Fig. 3, it will be observed that the wall projection, as h6, is not wide enough to touch both sides of the corresponding recess of the piston, and therefore in the movement ofthe latter there is a time in which the piston does not touch either side of the said case projection. Similarly the abutment projections act with relation to the walls of the interior piston-recesses, and therefore do not touch at times in the movement of the piston. Similarly the projections of the piston, both inside and outside, act with relation to the recesses in the abutment and case, respectively, and therefore do not touch at times in the movement of the piston. This result is due to the conformation of the case and abutment projections in their relation to the piston proj ections and not to any speciiic form of either. Therefore, other forms may be employed.

In an application for a patent filed by me l'OO IIO

March l0, 1886, under Serial No.194,725, and upon which Letters Patent No. 433,088 were granted under date of July 29, 1890, I have described and claimed, among other things, a water-meter, in which there is a hollow piston, having joint forming projections, arranged to make continuous contact with the case or with a iixed abutment, or with both, for forming the measuring-spaces to control the low of fluid into and out of the measuring-spaces through suitable ports. One of the features of my present improvements is that the piston projections are adapted to make intermittent contact both with the case and with the abutment. Not all of the claims of my said application are limited to a piston making continuous contact on one or both sides; butsome of them are broad enough to cover the structure herein described and others-such as, for instance, those having a pist0n with interior but without exterior proj ections or recesses.

Many of the details and combinations illustrated and above described are not essential to the several features of my present invention, broadly considered. This will be indicated in the concluding claims, as the omission of an element or the omission of reference to the particular features of the elements mentioned are intended to be formal declarations of the fact that the omitted elements or features are not essential to the invention therein covered.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

l. In a water-meter having suitable inlet and outlet ports, a case having interior projections and recesses, and a ixed abutment having exterior projections and recesses, in combination with a hollow piston having interior and exterior projections and recesses, all of said projections on the piston, case, and xed abutment being narrower than the recesses, in which they respectively operate, so as to make intermittent contact. j

2. In a Water-meter having suitable inlet and outlet ports, a case having interior projections and recesses, and a fixed abutment having exterior projections and recesses, in combination with a hollow piston having interior and exterior projections and recesses, all of said projections on the piston, case, and fixed abutment being narrower than the recesses in which they respectively operate, so as to make intermittent contact, an inlet-port for each case-recess, an outlet-port for each abutment-recess, and channel-ports for each case and abutment recess located on opposite sides of the abutment bearing-points.

3. The combination, with the register mechanism and the piston of a water-meter, of a gyrating arm connecting these devices, and a differential register-connecting device consisting of a spur and an annular gear.

t. The combination, with the register mechanism and the piston of a water-meter, of a gyrating arm connecting these devices and a joint-forming device for said arm, consisting of a iexible diaphragm, a-clamping-nut, and

a spring-ring holding the diaphragm to make the joint.

5. The meter-case having theinlet and outlet passages D and E, a corrugated interior wallsurface, and a corrugated abutment forming an intervening continuous chamber, into` which the wall-recesses of the case and of the abutment open, combined with the inlet-ports a to 0,6, opening into the case-recesses, the outlet-ports b to be, opening into the abutment-recesses, and the channel-ports c d', &c. v

6. The combination, in a water-meter, of a corrugated cylinder-wall, a corrugated central abutment, and a corrugated cylindrical piston dividing the case-chamber into measuring-spaces, with an open port and a channel port for the measuring-spaces of the abutment and an open port and a channel-port for the measuring-spaces of the case-chamber.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

LEWIS HALLOCK NASH.

Witnesses:

JNO. H. NoRRIs, WM. E. Frrz SIMoNs.

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