USRE10806E - Eotaey water metee - Google Patents

Description

5 Sheets-Sheet 1..

L. H. NASH.

Assignor to the NATIONAL METER COMPANY.

ROTARY WATER METER.

Reissue'd Feb. 8 1887.

6 0 oo 0 1 nw N L H N H 5 sheets-sheet 2..

Assignor to the NATIONAL METER COMPANY.

ROTARY WATER METER. 7 No. 10,806. Reissued Feb. 8, 1887.

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5 Sheets1--Shee,t 3*

L. H. NASH.

Assighor to the NATIONAL METER COMPANY.

ROTARY WATER METER.

Reissued Feb. 8 1887.

5 Sheets-Sheet 4.

L. H. NASH.

Asignor to the NATIONAL METER COMPANY.

ROTARY WATER METER.

7 b 00 n 00 0 1 u h 5 Sheets-Sheet 5.

ROTARY WATER METER.

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8 R 6w 0 0.0. m 0 m .l. .e o m N W UNITED STATES PATENT OFFICE.

LEW'IS H ALLO OK NASH, OF BROOKLYN, ASSIGNOR TO THE NATIONAL METER COMPANY, OF NEIV YORK, N. Y.

ROTARY WATER-M ETER.

SPECIFICATION forming part of Reissued Letters Patent No. 10,806, dated February8, 1887. Original No. ALB-.2, datcd Januaryfll, 197.). Application for reissuefiled December 18. 1&6. Serial No. 232,012.

To all whom it may concern.-

Be it known that I, LEwIs HnLLocK N ASH, late of South Norwalk, Connecticut, but now ofBrooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tater-Meters; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make anduse the same, reference being bad to the accom pan yingdrawings, and to letters of reference marked Ihcreou,\vhichibrma part of this specification.

To obtain accuracyof' measurement in a watermeter with a construction Specially adapted for durability of operation, and by which a positive displacement of the water is effected without impeding the flow and inter-' rupting the pressure'of the head, is'the ob ject of my invention.

\Vatcr-meters adapted with reciprocating pistonswhilc effecting accurate measurement have the disadvai'itage of interfering with the flow, and as a consequence entail the loss of pressure in the flow In in y improved meter I use a piston adapted to have an eccentric orside-rocking mot-ion across the center of a cylinder-chamber to effect its division at two or morepoints into receiving and discharging spaces. The piston operates with two or more continually-changing points or lines of bearing or contact with two or more points or contact-bearings of the cylinder at different points at the same time, by which the receiving and discharging spaces of the cyli ndcr are caused to continually change their volume with an unobstructd'flow and a positive displacement of the water from the discharging-space of the cylinder by the rocking of the piston from one bearing-point to another across the chamber of the cylinder. \Vith this eccentric or side-rocking action the piston also revolves around its own center, and both these movements are effected by the relative shape of the piston and cylinder and by the direct action of the water upon the piston for, as the piston rocks from one bearing-point to another directly across the center of the cylinder itis at the same time revolved to efi'ect themeasuremcnt of the water passing into and from the cylinder-spaces, and to accommodate this eccentric or side-rocking motion of the piston it must have a free or shifting connection with the crank 01' moverof the registering mechanism. 5 v The continuallyehanging points or lines of bearing of the piston and cylinder are formed by alternate projections and recesses, and the eccentric or Side-rocking movement of the piston is governed by the extent of the project- 6o ing bearing-points and the depth of the recesses, 'so that in the rotation of the piston around its own center one or more projecting bearing-points of the piston will pass into corresponding recesses at one point of the cylinder and in contact with and over one or. more projecting hearing-points of the cylinder at a different point, thereby always maintaining a direct contact of the piston and cylinder at two or more dividing points within the contiuually-changing cylinder-spaces, and obtain thereby a continuous flow without interfering with the pressure of the head. K

The object of these continually-changingpoints'or lines of contact at different parts of the piston and the cylinder, and of the continually changing volumes of the receiving and discharging spaces formed thereby, is'to allow the water to flow through a valve into and from these spaces, as they fill and dis- 8o charge,witho nt impeding its flow or lessening its force.

In this connection and for effectingthis operation, the valve may be formed with and constitute a part of the piston; or it may be separate therefrom and controlled by a connection therewith.

The valve is arranged so that the cylinderspaces on one side of the piston as it revolves have free inlet for the water through one set of the valve-ports, while the spaces on the other side of the piston have free outlets for the water through the other ports of the valve, causing the piston to move with the flow. In this operation the valve opens some and closes 5 others of the ports in succession in such a manner as to keep the line of pressure of the water as nearly as possible at right angles to the direction of the eccentric or side-rocking and rotary movements of the piston, and there- 10o by avoid any undue lateral pressure of the waterupon the piston. This result is accomplished in a more satisfactory manner by increasing the number of the bearing points or lines of the cylinder and piston, as shown in Fig. 3. WVhen thevalve is arranged within the piston, it is formed by inlet and outlet openings or ports in the ends of the piston, communicating by means of passages in'or .through the'piston with the spaces of the cylinder. These end openings or ports communicate with corresponding openings or ports in the ends of the cylinder, which form the inlet and outlet ports thereof.

In the arrangement of the valve separate from the piston the latter has no inlet and outlet ports; but these are formed within a case communicating with the cylinder, and operate in the same manner with respect to the coustantly-changing cylinder-spaces, and the action of such separate valve is the same as one formed within the piston, and its motion is controlled by any suit-able free attachment with said piston.

The results of these different arrangements of valves are identical, and any suitable form of valve may be used that will operate with a periodic relation to the movements of the pisk ton, so as to give a uniform flow and'a uniform pressure upon the working parts.

Referring to the drawings, Figure 1 represents a vertical section of a water-meter embracing my invention; Fig. 2, a top viewwith the case removed, showing one of the cylinder-ports; Fig. 3, a similar view, the cylinder-head being removed, showing one form of the cylinder bearing lines or points in connection with the rotary and side-rocking piston J co-ope'rating therewith, and in which the valve is shown as being within the piston, as in Figs.

1 and 2; Fig. 4, the rotary and side-rocking piston with its inclosed valve; Fig. {3, a partial side view of the same, showing the end ports communicating with the lateral passages; Fig. 6, a perforated device at the cylinder-chamber inlet-port adapted to form a close-wearing joint for the piston; Fig. 7-, a vertical section of a modified form of meter, to illustrate the arrangement with the rotary and side-rocking piston of a valve separated therefrom, but

controlled-by the motions of said piston; Fig. 8, the arrangement of the inlet and outlet passages intoand from the cylinder-chamber and 'a-valve separated from the piston, taken on I linecva of Fig. 75 Fig. 8, a section on line b b, and'Fig. 8 the'separate valve. Figs.9, 10, and llare modified forms of; the cylinder-bearing points or li uesand the corresponding forms of side-rocking and rotary pistons adapted for co-operation therewith, and Fig. 12 shows the direction of the line of pressure upon the piston in relation to its continually-changing motion and the divided cylinder-spaces.

The ease I prefer to make in two parts, one, A, of which forms the head or base, and'has. the inlet and outlet passages,-whicli communicate with the cylinder-chamber ports, while shownin Figs. 3 and 12.

the other part, B, forms the inclosing-case and carries the dial mechanism.

The cylinder 0 is secured to the base in any suitable way, leaving a space, D, between its walls and the case. B, which space communi: cates with the outlet-passage E, while the inlet-passagc F communicates with the cylinderinlet-port by an opening or openings, G, in the base.

The case B may or may not be used; but when it is it serves to form the space Dsurrounding the cylinder, and to relieve the working parts from undue pressure. In Fig. 7 the construction does notrequire the inclosingcase. I

The piston His arranged for operation within the cylinder, and the hearing or contacting surfaces of these parts are formed by alternate recesses a a and projections b b of such form or configuration as to. allow of the rotation of the piston not only upon its own axis, but around and across the center of the cylinder, and the space within the cylinder must be of such form and suiiieiently larger than the piston H to allow it to have this compound motion. to form bearing points or lines of contact of the piston with the cylinder-walls, on opposite sides thereof, at the same time, as shown in Figs. 3 and 12, whereby to divide the cylinder into receiving and discharging spaces. Of whatever form these alternate recesses and projections, they must be such that while they are in'eontaet upon one side of the cylinder they must also at the same time have a contact at the opposite or a dilferent side of said cylinder, and in this way divide the cylinder into spaces. In this contact it will be observed that upon one side of the cylinder and piston such contact takes place between a recess and projection, or intermediately between these points, while upon the opposite side such con tact is made by corresponding projections, as

Intermediately be- The object of this compound motion is tween these points of bearing and division it is advantageous ,that the cylinder-spaces a should communicate by the depression 0',

whereby to prevent the choking of the flow i and insure a uniform action of the piston.

The compound motion of the piston and the contacting dividing-points are due to the fact that the piston has one or more less points of projectionthan the cylinder.

When the valve is formed within the piston, as shown in Figs. 1, 2, 3, 4, and 5, the heads of the cylinder have inlet and outlet ports J and K, which must have such formv as to act in connectionwith ports in the piston to form a valve.

it consists of ports d cl in the ends of the pis ton, communicating with lateral passages e e, which communicate with the spaces 0 of the As shown in these figures, the valveis formed within or isa part of the piston, and

cylinder, which form the receiving and-dis- I charging divisions.

The ports d receive the waterfrom the c y1- inder-port J and discharge it into the cylinwhile the ports d discharge the water from the cylinder-spaces through the passages e, the

water flowing from the valve-ports d through the cylinder-port K, whence it passes into the a surrounding space D and out through the dischargerpipe at E.

With this construction of valve I deem it advisable to use a self-adjusting perforated device, L', 'as the inlet-port, which is carried and held against the piston by the flow of the water against its perforated end, causing the op positeend to maintain a close joint with said piston-to take up the wear.

The function of the valve is to regulate the flow of .the water in and out of the spaces of the cylinder in'such manner as to produce the compound rotation and cross movement of the piston; and this function can be made operative whether the valve be arranged within the piston, as described, or separate from and connected with it, as shown in Figs. 7 and 8 of the drawings, it being only necessary that the motion of the valve should .be controlled by the compound motion of the piston in any arrangement; and I do not wish to confine myself to either of the specific arrangements of the valve shown, or to any specific construction of such valves in relation to the piston, so long as the valve and the piston co-operate to produce the results stated.

The valve shown in Figs. 7 and 8 consists of revolving cylinder M, which by a partition divides the inlet from the outlet, and is supported by a fixed stem, f, within its seat. The water enters through the top of the valve by the ports h and passes out through a side port, 9, in said valve into corresponding ports, 21, in the'valve-seat, thence through the passages j j .|,Q .into the filling-spaces c of the cylinder, and

from the discharging-spaces it passes'through the passagesjj and the ports 1" in the valveseat through the-port g, and escapes through the bottom of the valve into the dischargeother suitable connection may be made that will allow of the side movement of the piston. The piston is connected to the dial mech-' anism by a pin, 0, engaging by a free action with or operating an arm, p, of the train of the interior'gear, whereby the rotations of the piston are recorded by the usual dial-indices.

The recording device is mounted in a separate-outside case and connected with an, in-

terior train by means of a shaft through a stufling-b'ox, as in ordinary dry-dialv'attachments.

' It is required, in order to get the best re-- suits, that the valve should open and close its inlet and outlet ports in succession in such a manner as to keep the line of pressure as nearly as possible at right angles to the direction of the motion of the piston. By the line of pressure I mean a line connecting the points of division which separate the inlet from the outlet spaces 0 of the cylinden-as shown by the line 2 in Fig. 12; and by a line of motion I mean a line which is tangent to the path of the axis of' the piston at any point of such path, as shown by the arrow 3 in said figure, and in this way these lines continually change their position as the piston rotates and rocks sidewise.

I prefer to makethe piston of hard rubber; but it may be made of any {suitable material, and either in one piece with the valve, or the latter may be made in the form of a plug and inserted within an opening in the piston.

I have described and prefer in practice that the piston shall have the compound motion described;'but it is obvious that the piston may be fixed and the cylinder be made to have i the relative compound motion. So, in like manner, both the cylinder and the piston may have a separate conjoint motion yet retaining the same relation-to each other. In the use of the meter the inlet may become the'outlet, and vice versa. It is also contemplated to use the machine as a motor or asapump, and in the formercase the power is taken from the piston through a crank-shaft or otherwise,and in the latter case the power is applied to the piston in the same manner.

The self-adjusting port device L (shown in Figs. 1 and 6) is adjustably seated within and forms said port, and has side walls, with one end perforated and its other end open, and provided with a rim which bears upon the end of the piston to effect the object stated.

. An important feature of my invention embraces the combinatiomwith a piston adapted to operate substantially as described, of a valve controlledcthereby, irrespective of its specific construction or arrangement.

'When an inclosing-case'is used in connection with the cylinder, they are so arranged in relation to each other as to form an intermediate surrounding space, communicating with the end parts of the cylinder-chamber and with the outlet-port of the receiving end of the piston, for the purpose stated.

It will be seen that the connection of the piston with the registering mechanism is such as to allow of. a free or shifting action to accom modate the side-rocking movements of the piston across the center of the cylinder-chamberand maintain a driving relation with the dial mechanism.

I do not claim, broadly, a piston for watermeters, pumps, and motors having alternate bearing points or projections and recesses adapted, by means of acylinder-chamber having alternate bearing points or projections and recesses, to have an eccentric or side-rocking movement within-and upon continually-changing lines across the center of said chamber to efi'ect its division at two or more points on its sides into receiving and discharging spaces 0 c, which communicate with the inlet and outlet, as amotor-havingapiston of substantially such construction and movement within a cylinder-chamber having such construction is shown and described in the English patent of Elijah Gal,loway,December 14,1846,No.11,485;

but what I do claim are said elements in combination with additional elements, as hereinafterv specified, thereby limiting my claims to the novel features embraced in my meter.

I therefore claim- 1 '1. A piston for water-meters, pumps, and motors having alternate bearing points or projections and recesses adapted, by means of a cylinder-chamber having alternate bearing points or projections and recesses, to have an cccent-ricorside-rocking movement within and upon continually-changing lines across the center of said chamber to effect its division at tw'oor more points on its sides into receiving and discharging spaces 0 c, which communicate with the inlet and outlet, combined with a stationary top and ,bottom end plate in said cylinder-chamber,fitted to make easy-working joints with the respective ends of said piston, and with valves to coact with the piston in re ceiving and discharging water.

2. A piston for water-meters, pumps, and

motors having alternate bearing points or projections and recesses adapted, by means of a cylinderchamber having alternate bearing points or projections and recesses, to have an eccentric or siderodking motion within and upon continually-changing lines across the 7 center of said chamber to efl'ect its divisionat two'or more points on its sides into receiving and discharging spaces a 0, which eommunicate with the inlet and outlet, combined with a top and bottom end plate in said cylinderchamber, and with means, substantially as described, by which the water is caused to,flow.

over both ends of said piston.

3. Apiston for water-meters, pumps, and motors provided with internal water-passages,

and having alternate bearing points or projections and recesses adapted, by means of a cylinder-chamber having alternate bearing pointsor projections and recesses, to have an eccentric or side-rocking movement withinv andyupon continually-changing lines across the center of said chamber to eflect its divis-' ion at two or more points on its sides into receiving and discharging spaces 0 c, which communicat'e with the inlet and outlet.

' 4-. A 'pistonfor water-meters, pumps, and motors having alternate bearing points or projections and recesses adapted, by means of a cylinder-chamber, having alternate bearingpoints or projections and recesses, to havean "teccentricor side -coking movement within and upon continually-changing lines across the center. of' said chamber to efl'ect. itsdivision at two' o'r more points on its sides into receiving and discharging-spaces c c, which communicate with the inlet and outlet, said piston having a free movement within said cylinder, controlled only by the shape of the cylinder, the shape of the piston, and the flow 0t) water through the meter.

5. A piston for water-meters, pumps, and

motors having alternate bearing points or projections and recesses adapted, by means of a cylinder-chamber having alternate bearing points or projections and recesses, to have an eccentric or side-rocking motion within and upon continually-changing lines across the center of said chamber to effect its division at two or more points on its sides into receiv ing and discharging spaces a c, which communicate with the inlet and outlet, said piston being formed of hard rubber and having a free movement within said cylinder controlled by the shape of the piston, the shape of the cylinder, and the flow of water through the meter.

\6. A piston for water-meters, pumps, and motors having alternate bearing points or projectionsand recesses adapted, by means of a 'cylind erchamber having alternate bearing points or projections and recesses, to have an eccentric or side-rocking movement within and upon continually-changing lines across the center of said chamber to efl'ect its division at two or more points on its sides into receiving and discharging spaces 0 c, which communicate with the inlet and outlet, combined with ports controlled by said piston itself in its motion within said chamber.

, 7. The piston of a water meter, pump, or motor constructed with alternate recesses and bearing points or projections 01 and b, and a cylinder-chamber having alternate wall-recesses and bearing points or projections a and b, adapted to intermatch with each other at one or more bearing-points at one side of the cylinder and allow the projections of each partto bear upon and to pass each other at two or more points at a-difierent side of the chamber, to allowthc piston to revolve while it also rocks in constantly-changing lines across the center of the cylinder-chamber, for the purpose stated.

8. The piston of a water-meter adapted to have an eccentric or side-rocking movement across the center of the cylinder-chamber and a revolving motion,vcombined with a registering mechanism by means of a free or shifting connectionacting with the continually-changing side'rocking movements of the piston i while maintaining a driving relation with the dial mechanism.

9. The combination, with a piston having an eccentric or side-rocking mot ion acrossthe center of the cylinder-chamber and a revolving motion around its own center to divide the cylinderv at two or more bearing-points on its sides, of a valve controlled by the movements of said piston and adapted to open and to close, receiving and discharging ports in succession to effect the purpose stated.

10. A rotary piston having-a valve formed 7 side thereof, and, re-entering the valve from the other side of said cylinder, passes out at "10,806": Y a s" therein byopposite endports or depressions, and adapted to act in connection with receiving and discharging ports or passages in the cylinder-chamber to'form a valve and piston into and through which the the inlet-cylinder end ports passes through one end of the valve into the cylinder on one the opposite end ports of said valve, to-efv feet the purpose stated,

11. A rotary valve-piston having opposite end ports d d, communicating'with the piston sides by diagonal passages e e, in combination with a cylinder having receiving and discharging ports communicating with said opposite valve end ports and with the receiving and discharging spaces of said cylinder, whereby said valve opens some and closes others of its ports in succession, and to effect the equali-- zation of the pressure of the water at right angles, to the direction of the side rocking and rotary movements of the said valve-piston, as

stated.

water enteringat' 12. The inlet device L, havingside walls, a 25 whereby to prevent the choking of the flow and insure a uniform action of a piston adapted -for operation with a side-rocking motion across the center of the cylinderand a rotary motion around its own center.

In testimony that I claim the foregoing I vhaveaifixed my signature in the presence of two witnesses. I

LEWIS HALLOOK NASH.

I Witnesses:

H. W. BRINoKERHoFF, VILLI iM (L'WESCCERVELI.

for the purpose 3o having alternate bearing points and recesses, 5

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