US319811A - Liquid-meter - Google Patents

Description

3 Sheets-Sheet 1.

(NO Model.)

B. W. GRAVES.

LIQUID METER.

Patented June Q', 1 885.

' 292a Jy%/m M N. PETERS. PhuwLRhogmpML Washingfnn D C.

(N0 Mddel.) 3 Sheen s-Sheet 2.

R. W. GRAVES "LIQUID METER. V N0. 319,811. Patented June 9; 1885.

4 liar/261%);

KM E r/621302:

w 3 t. w C 70 16 l W t I C 11 n- 1-; H .7 Jw w Hz i m w I Q J 3 Sheets'Sheet 3.

(No Model.)

B. W. GRAVES.

LIQUID METER.

Patentedjune 9, 1885.

July, 6'.

N- PEYERS. Fhdlo-Uthngmpher. Washi gton, L 6.

Prion.

.Arnnr ROGER W. GRAVES, OF BUFFALO, NEYV YORK.

LIQUID- METER.

SPECIFICATION forming part of Letters Patent No. 319,811, dated June 9, 1885. Applicatinn filed August 22, 1884. i (No model.)

To aZZ whom it may concern:

Be it known that I, ROGER W. GRAVES, of the city of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Liquid-Meters, of which the following is a specification.

This invention relates to an improvement in that class of liquid-meters in which two cylinders are employed, and which are provided with independent reciprocating pistons, which are set in motion by the liquid passing through the meter, the admission of the liquid to opposite ends of the meter and the exit of the liquid therefrom being controlled by'valves which are operated by the reciprocating pistons.

The object of my invention is to produce a simple, compact, and reliable meterof this character; and it consists of the particular improvements in the construction of the me-- ter, which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, consisting of three sheets, Figure 1 is a longitudinal sectional elevation of my improved meter. Fig. 2 is a horizontal section of the same in line w :0, Fig. 1. Fig. 3 is ahorizontal section in line 1 y, Fig. 1. Fig. 4 is a horizontal section in line 2 2, Fig. 1, with the pistons and pistonrods removed. Fig. 5 is a sectional elevation of the upper portion of one of the cylinders and valve mechanism in line to 10, Fig. 2. Fig. 6 is a vertical cross-section in line 12 1), Fig. 1.

Like letters of reference refer to like parts in the several figures.

A A represent the measuring'cylinders, arranged vertically side by side, and which are preferably cast in one piece. The cylinders A A are closed at their lower ends by a bottom plate, A which is provided with waterpassages a a, which communicate, respectively, with the bottoms of the cylinders A A. The cylinders A A are connected at their top and bottom by marginal rims or flanges a a", and the bottom plate, A", is secured to the rim a by screw-bolts a. I

B represents the top cover, and B the valveseat plate arranged between the cover B and the top of the measuring-cylinders A A. The cover B is provided with a downwardly-extending rim, b, so as to form a chamber between the cover and the plate B. The cover B is provided with a marginal flange, b and the plate B is provided with similar flanges,

the upper flange or rim, a", of the cylinders A A, and is secured thereto by screw-bolts b, and the flange or rim 1) of the cover B is secured to the upper rim, b of the plate B by screw-bolts b O 0 represent the valve chambers, arranged, respectively, above the cylinders A A, and communicating with the upper ends of the cylinders by means of vertical ports or openings c 0', formed inwthe plate B. The valvechambers O G are formed by downwardly-depending walls or partitions 0 formed on the under side of the cover B, and which rest with their base snugly upon the top of the plate B, which latter forms the bottom of the chambers 'O O. The valve-chambers O O are arrangedover the cylinders A Ain such manner that the port a of the chamber 0 will communicate with the top of the cylinder A, and the port 0 of the chamber 0 with the top of the cylinder A.

O is a water-passage forming a communication between the chambers O G and connecting the two chambers.

d is an opening or port formed in the plate B within the chamber 0, and d is a similar opening or port formed in the plate B within the chamber 0. The ports d d communicate, respectively, withthe bottom of the cylinders A A by means of tubular passages e e and the horizontal passages to a. The tubular passages e e are arranged between the two cylindersA A, on opposite sides thereof, and

inders, and extend vertically between the upper and lower rims ofthe cylinders.

E represents the inlet-passage communicating with the chambers O O, and E represents the outlet-passage formed in the plate B. f are the outlet-ports formed in the plate B between the ports a d and c d, respectively. The outlet-port f communicates with the outlet-port f and outlet E by means of a horizontal channel'or passage-way, f, formed in the plate B.

G G represent the valves, which are arranged, respectively, in the chambers O O, and rest upon the top of the plate B. The

valves G G slide between parallel gnideways b 6 j The flange If of the plate B rests upon u are preferably cast in one piece with the cyl-I g 9, formed on the plate B in the valve-chambers on opposite sides of the valve-ports, so

that the valves G G cover the valve-ports 6 dj" and c df, formed in the chambers O and C, respectively. The valves G G are of the proper size, so as to-cover the discharge-ports ff and either of the endports, c c or d d,and

are concaved on their under side, or hollowed out, whereby a communication is formed be- 10 tween one of the end ports, a c or d d, and the central dischargeports. The valves G G cover the discharge-ports at all times and prevent any communication between the discharge-ports and the chambers G O. When I 5 the valves are in the position shown in the drawings, a passage is formed between the port f and d by the valve G, and between the ports f and c by the valve G. When the valves are in this position, t-he'water is permitted to enter the cylinder A above the piston through the port 0, and the cylinder A below the piston through the port (1 and passage 6. The

valves G G are exposed on their upper surface to the pressure of the water in the cham- 2 5 bers G C, which communicate directly with the water-supply through the inlet E, and are confined to the valve-seats on the plate B by the pressure of the liquid on the valves.

H H represent the pistons, which are arranged, respectively, in the cylinders A A,

and h h" are the piston-rods extending up wardly from the pistons through the cylinders,

and terminating inclosed tubular extensions h?,which are secured to the top cover, B. The

3 5 upper ends of the rods h h are guided in the extension h by any suitablemeans. I

The pistons H H each consist of two disks of leather or other pliable material,which are interposed between two disks or plates, q q.

0 The edges of the leather disks fit closely around theinner surfaces of the cylinders and form a water-tight joint. The top plate, q, is provided with a downwardly-projecting hub, g", which extends through an opening formed j in the leather disks or plates, and is provided near its lower end with an external screwthread, over which engages a screw-nut, q, whereby the parts are held together. The

lower ends of the pi ston-rods h h are provided with external screw-threads, which engage in internal screw-threads formed in the hubs (1 whereby the same are secured to the pistons.

i z" are the valve-rods by means of which the valves G G are operated. The rods ii are 5 5 connected at their inner ends with the valves G G by means of a screw-threaded nut or 001- lar, i, which is arranged between two lugs, g projecting upward from the top of the valves. The lugs g are slotted to receive the end of the rod, and which permit the valves to rest freely on the plate B. The rod 1', which is attached to the valve G, extends through the wall 0" of the chamber 0 and over the cylinder A, and is guided at its outer end through. an opening formed in a downwardly-projectinglug,j, se-

cured to the under side of the top plate or cover,

B. The outer end of the rod i is preferably made square ,or rectangular in cross-section,

and the opening in the lugj of correspondingform, so as to prevent the rod 1' from turning therein.

j represents a stud or support secured to an arm formed on the plate B. The stud j is arranged between the wall a and the lug j, and is provided with an opening through which the valve-rod is guided, and whereby the rod iis supported between the wall 0 and its outer end.

The opening in the wall 0 through which the valve-rod passes is provided with a suitable stufling-box or gland, c.

The valve-rod i, which operates the valve G, extends through the wall 0 of the chamber 0 in the opposite direction of the rod 1', so as to project over the cylinder A. The rod i is supported and guided by asimilar lug, j, and

support j, whereby the rod z is supported and guided.

k represents a vertical plate guided between two vertical ways, k, which are formed or secured to a frame, k". The frame is is secured to the outer side of the casing O and straddles the piston-rod )1, so that the ways k are arranged on opposite sides of the piston-rod and parallel therewith. The inner faces of the ways 7c are recessed to receive the beveled edges of the plate k, which slides between the ways k. The plate It is provided at its upper and lower ends with horizontal rings 1 Z, which extend backward from the face of the plate and surround the piston-rod h. the plate It is provided with an inclined slot, I, in which engages a roller or projection, m, which is secured to the valve-rod 1' between the supports j j. On moving the plate is vertically between the ways k the roller m, engaging in the inclined slot 1* of the plate, imparts a horizontal slidingmovement to the valverod i and to the valve G, which is attached to the inner end of the rod. The valve-rod 11, which is attached to the valve G, is provided witha similar roller, m, which also engages with a similar vertically-sliding plate, k, on the piston-rod h. The plate k, which operates the valverod 1', is supported between similar ways, is, secured to the opposite side of the casing G.

n n are stops or collars secured to the pistonrod h, and arranged, respectively, above and below the plate k, and n" n are similar collars secured to the piston-rod h, one above and the other below the plate k. The collars n n and n n are arranged on the piston-rods h h in such manner that when thepistons have nearly completed their upward stroke the col- The face of lars n n will come in contact with the rings l of the plates k and cause the latter to ride upward with the rods, and when the pistons have 'nearl y completed'their downward stroke the collars n n will come in contact with therings Z of the plates k and force the latter downward. The valve'rods i i,engaging in thein clined slots in the plates 70, are causedto take part in the movement of the pistons,and thereby change the position of the valves and alternately open and close the end ports,c cand (Z (1.

0 0 are upwardly-projecting annular flanges or rings, preferably cast in onepiece with the bottom A ,on which rest the pistons H H when at the limit of their downward stroke, and 0 0 represent downwardly-projecting flanges or rings, cast with the bottom of the plate B, against which the upper surfaces of the pistons strike when at their extreme upward movement.

The inner surfaces of the cylinders A A are preferably provided with a lining, p, of brass or other suitable metal, forming a smooth surface for the pistons, and which can be cheaply and easily replaced when worn.

When the parts are in the posit-ion as shown in the drawings, and the inlet-passage E is connected with the water-main or other source of supply, the valve-chambers O O are filled through the inlet E, and the pressure of the water or other liquid in the chambers O 0, bearing upon the top of the valvesGG,-retains the latter snugly upon their seats. The water escapes from the chamber 0 through the port 0 and into the cylinder A above the piston H, and also at the same time from'the chamber 0 through the port d into the passage e, and through the passage a into the bottom of the cylinder A. As the liquid flows into the cylinder A the piston H is forced upward, and when it has nearly reached the limit of its upward movement the collar n engages against the under side ofthe ring Z ofthe slide k, and raises the same until the piston H has completed its upward stroke. During this movement of the piston-rod h and the slide is the valve G is shifted by its rod i engaging with the inclined slot in the slide k, thereby closing the port 0 and opening the port d of the cylinder A. The port 0 by this movement of the valve G is made to communicate with the discharge-port f and the port d with the valve-chamber G. The liquid now finds its exit from the chamber 0 through the port d into the passage 6, and into the cylinder A below the piston H, forcing the latter upward. The water contained in the cylinder A above the piston, which had previously entered through the port a, is now permitted to escape through the port 0 into the dischargeportfand into the outlet E. When the piston H has nearly reached its upward stroke, the collar n engages against the under side of the ring Z, surrounding the piston-rod h, and raises the slide it, which engages .with the valve-rod t" of the valve G, thereby shifting the latter so as to close the port d and open the port 0. The port d is now in communication with the port f, and the port 0 with the chamber 0. The water is now permitted to escape through the port 0 into the cylinder A above the piston, and theliquid contained in the cylinder A below the piston H is forced out through the opening a in the bot-tom of the cylinder into the passage 6 and port d, from which it escapes into the discharge-port f, and from thence to the outletEC, When the piston H has nearly completed its clown- ,ward stroke, the collar 91 which is secured to the pistonrod h above the slide it, engages against the ring- Z and forces the slide downward, and returns the valve G to its former position and permits the liquid to enter the top of the cylinder A;

It will be noticed that the movement of the valve of one cylinder is controlled by the movement of the piston in the opposite cylinder, and the piston in one cylinder isat rest until the piston in the opposite cylinder has completed its stroke and moved the valve of the opposite cylinder.

My improved meter is cheaply constructed, and can be operated with a very low or high pressure, and at all times. The parts being simple in construction renders the whole apparatus very simple, compact, and reliable in its operation.

Any suitable registering mechanism may be connected with the meter in a well-known manner.

I claim as my invention 1. The combination, in a liquid-meter, of two measuringcylinders, A A, arranged side by side and provided with independent pistons H H and piston-rods h h, valve-chambers O 0, arranged above said cylinders and provided with ports 0 c, communicating, respectively, with the cylinders A A above the pistons, and ports (I d, communicating with passages leading to the opposite ends of said cylinders, valves G G, arranged in the chambers G Oand provided with valve-rods t t, which extend through the walls of the chambers O C, and are arranged at right angles to the piston-rods, and mechanism whereby the valverods are actuated by the piston-rods, substantially as set forth.

2. The combination, with the cylindersA A, provided with marginal flanges a a and passages e e, of the bottom plate, A provided with the passages a a, communicating with the passages e 6, plate B, provided with passages d d, communicating with the opposite ends of the passages e e, and cover B, substantially as set forth.

3. The combination, with the cylinders A A, bottom plate, A, provided with the horizontal passages a a, and plate B, provided with the passages d d, vertical passages e 6, formed on opposite sides of the cylinders and communicating at their opposite ends with the passages a a and d d, ports 0 0, formed in the plate Band communicating with the cylinders A A, cover B, and chambers O C, arranged above the plate B, and communicating with the passages in the plate B, and provided with slide-valves G G, substantially as set forth.

4. The combination, with the cylinders A to engage with the slides in and shiftthe valves when the pistons have completed their stroke, substantially as set forth.

Witness my hand this 16th day of August,

ROGER W. GRAVES.

Witnesses:

CARL F. GEYER, JNo. J. BONNER.

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