US410408A - Piston meter - Google Patents

Description

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W. T. FOX.

PISTON METER. No. 11.10.408.4 Patented Sept. 3, 1889.

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No. 410,408. Patented Sept. 3, 1889.

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W. T. FOX.

PISTON METER.

No. 410,408. Patented Sept. 8, 1889.

UNITED STATES PATENT OFFICE.

VILLIAM T. FOX, OF ROCHESTER, NEV YORK.

PISTON ETER.

SPECIFICATION forming part of Letters Patent No. 410,408, dated September 3, 1889.

Application led February 2l, 18884 Serial No. 264,757. (No model.)

T 0 all whom it may concern:

Be it known that I, VILLIAM T. FOX, of

i the city of Rochester, in the county of Monroe 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 a reciprocating piston is employed which is actuated bythe liquid passing through the meter, and in which the valve mechanism controlling the admission of the liquid to opposite ends of the meter and its discharge therefrom is operated by the reciprocating piston.

The object of myinvention is to produce a meter of this character which shall be simple, light, and compact in construction, accurate in operation, and which can be manufactured at comparatively small cost.

The invention consists of the improvements which will be hereinafter fully described, and pointed out in the claims.

In the accompanying drawings, consisting of three sheets, Figure l is ahorizontal section of my improved liquid-meter. Figi) is a similar view with a portion of the measuring-cylinder broken away and showing the valves reversed. Fig. 3 is a vertical longitudinal section taken through the measuring-cylinder. Fig. et is a central cross-section of the meter. Fig. 5 is a cross-section in line fr a, Fig. l.

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

A represents the horizontal measuringcyl inder, provided in its outer side with a central inlet a, and B Bare two piston-heads reciprocating in the measuring-cylinder and rigidly connected together by a rod b, so as to constitute a duplex or hollow piston.

C represents a primary-valve chamber arranged on the inner side of the measuringcylinder A and communicating therewith by a central opening c, arranged opposite to the inlet a.

d d are two sliding piston-valvesarranged in the primary valve chamber C and connected together by a valve-rod d2, so as to constitute the primary valve. The valve-rod cl2 is provided with two arms or projections d, arranged in the measuring-cylinder A, and which are struck alternately by the reciproeating pistons B B', thereby shifting the Ivalves d d. The arms di are formed on a v.shank di', which passes through the opening c and is secured in a socket formed in the .valve-rod d2 by a screw-bolt d4. By this construction the arms d3 can be removed for inserting and withdrawing the valves d d and 'the arms be secured to the valverod from the interior of the cylinder A after the valves are inserted int-o the valve-chamber.

E E represent two rectangular chambers or passages arranged adjacent to the primary-valve chamber C and closed at both zends. The passages E E are connected with the primary-valve chamber C by openings e c', arranged near the inner ends of said passages. The sliding valves d d alternately open and close the communication between the cylinder A and the passages E E.

F represents a secondary-valve chamber located outside of the chambers or passages E E and placed in communication with the latter by openings f f arranged near opposite ends of the secondary-valve chamber F.

g g g2 are sliding piston valves arranged in the secondary-valve chamber F and connected by a rod g3, so as to constitute the secondary valve. The movement of these valves is limited by stems g4, arranged at the outer ends of the valves g g2, and which strike the end walls of the valve-chamber F.

h is a passage arranged between the inner ends of the longitudinal chambers or passages E E and connecting the primary and secondary valve chambers O F. The transverse passage 7L is arranged in line with the inlet a and opening c, as clearly shown in Figs. 1 and 2.

I I represent two rectangular passages or channels arranged on the outer side of the secondary-valve chamber F andl separated by a central partition i, arranged in line with the transverse passage h. The passages I I communicate with the secondary-valve chamber F by means of openings jj, arranged near the inner ends of said passages.

la k are ports connecting opposite ends of the measuring-cylinderAwith the outer ends of the channels or passages I I. The valves g g g2 alternately establish and cut off the communication between the primary-valve chamber C and the passages or channels I I.

L, Figs. 4 and 5, represents a rectangular TOO discharge-chamber arranged below the valvechambers C F, the chambers E E, and passages I I. The discharge-chamber L is provided with an outlet l. The secondary-valve chamber F is provided in its bottom with openings m m arranged on opposite sides of the passage h, and whereby it is placed in communication with the discharge-chamber L.

n n. represent relief-openings formed in the bottom of the primary-valve chamber C on opposite sides of the openings c e', and through which the liquid contained in said chamber on the outer sides of the valves d d escapes into the discharge-chamber L.

O represents a horizontal shaft, which is journaled in a suitable bearing O, arranged centrally in the upper side of the cylinder A and projecting with its inner end into the latter.

p is a rock-arm pivoted with its bifurcated upper end to the inner end of the shaft O, and engaging with its lower free end in a slot p',

formed in the piston-rod h, as shown in Fig. 3.l

q is a ratchet-wheel secured to the shaft O between the bifurcated ends of the rock-arm p, and q is a weighted actuating-pawl pivoted to the rock-arm p and engaging with the ratchet-wheel q.

Any suitable and well-known registering mechanism Ris connected with the outer end of the shaft O.

The reciprocating motion of the connectingrod b imparts a rocking movement to the arm p, and the latter in turn imparts an intermittent rotary motion to the shaft O.

The inlet a being connected with the supply-pipe, and the parts being in the position represented in Fig. 1, the water or other liquid entering the measuring-cylinder A between the pistons B B passes through the opening c, passage h, opening-j', channel I', and port It into the right-hand end of the cylinder A behind the piston B', and forces the latter toward the opposite end of the cylinder. The liquid contained in the measuring-cylinder in front of the piston B is forced through the port lo, channel I, and opening j into the secondary-valve chamber F,and from the latter into the discharge-chamber L through the opening fm. When the piston B has almost reached the limit of its stroke, it strikes the adjacent arm cl3 of the valves d d and shifts the latter to the position shown in Fig. 2, in which position of said valves the communication between the chamber E and the cylinder A is closed by the valve d', while the communication between the chamber E and the cylinder A is opened. A portion of the liquid passes from the cylinderAthrough the openings c e, chamber E, and opening finto the secondary-valve chamber F behind the valve g, and shifts the latter, with the valves g g2, to the position indicated in Fig. 2. Communication is now established between the opening c of the primary-valve chamber C and the channel I through the openings 77. and j, while that between the primary-valve chamber and the channel I is cut off by the Valve 4g The liquid now passes from the measuring-cylinder A through the opening c, passage 7L, opening j, channel I, and port 7c into the left-hand end of the measuring-cylinder behind the piston B, and forces the latter toward the opposite end of the cylinder. The liquid in the cylinder in front of the piston B escapes into the discharge-chamber L through the port k', channel I, openingj, andthe opening min the secondary-valve chamber. Just before the piston B arrives at the end of its stroke it strikes the adjacent arm cl3 of theyalves dd and shifts the latter, when the course of the liquid is again reversed, the valves g g g2 are again shifted to the position represented in Fig. 1, and the liquid again acts upon the opposite piston B.

The liquid contained in the primary-valve chamber C behind the valves d d escapes into the discharge-chamber L directly through the relief-openings n fn, while the liquid contained in the secondary-valve chamber F behind the valves g g2 escapes into said discharge-chamber through the openings f f',

Achambers E E', openings e e, and reliefopenings n n.

The registering mechanism is actuated at every alternate stroke of the piston and records each time the quantity of water passing through the meter during the backward A and forward movement of the pistons.

The detachable heads A of the cylinder A are preferably formed in one piece with the detachable end walls S of the valve-chambers C F, chambers E E, and passages I I and the ports lo lo are formed in said end walls.

A packing of rubber or other suitable material is interposed between the cylinder A and its heads and between the walls S and the ends of the several chambers and passages.

Suitable supporting-legs s are formed on the bottom of the measuring-cylinder A and the discharge-chamber L, as represented in Figs. 8 and 4L.

It will thus be seen that the secondary valve controls the admission of the liquid to the ends of the measuring-cylinder and the escape of the liquid therefrom, and that the primary valve controls the admission of the liquid to the secondary-valve chamber for shifting'the valve, so that the position of the secondary valve is controlled indirectly by the piston, the latter shifting directly the primary valve, which in turn operates the secondary valve by directing the liquid against one or t-he other end of the secondary valve.

My improved meter is very simple and compact in construction. All the valves thereof have a long bearing-surface, which renders the same durable, and all of the parts of the meter are conveniently assembled and capable of easy access. The liquid is discharged from the meter in a continuous stream, and the meter contains no movable parts which IOO IIO

It is obvious that my improved meter may be employed as a Water-motor by extending the piston-rod h through suitable stuffingboxes in the heads of the cylinder A and taking the power therefrom.

I claim as my inventionl. The combination, With the measuringcylinder A and pistons B B, of a primary-w valve chamber C, connected with the measuring-cylinder, slidingvalves d d', arranged in the valve-chamber C and having arms d3 projecting into the measuring-cylinder and actuated by the pistons B B, chambers or passages E E', communicating with the prmary-valve chamber C, a secondary-valve chamberF, communicating with the primaryvalve Chamber C and the passages E E', sliding valves g g g2, arranged in the secondaryvalve chamber F and operated by the pressure of the liquid, chambers I I', communicating with said secondary-valve chamber, ports k k', connecting said channels with opposite ends of the measuring-cylinder, and a discharge-chamber L, communicating with the secondary-valve chamber F, substantially as set forth.

2. The combination, With the measuringcylinder A and the duplex pistons B B', of a primary-valve chamber C, connected With the neasuring-Cylinder and provided with reliefopenings n n', sliding valves d d', arranged in the valve-chamber C and having arms d3, actuated by the pistons B B', chambers or passages E E', communicating with the primary-valve chamber C, a secondary-valve chamberl F, communicating With the primaryvalve chamber C and the passages E E and having liquid-escape openings 'm m', sliding Valves g g g2, arranged in the secondaryvalve chamber F and operated by the pressure of the liquid, channels I I', communicating with said secondary-valve chamber, ports k 7c', connecting said channels with opposite ends of the 1neasuring-cylinder, and a discharge-chamber L, substantially as set forth.

3. The combination, with the measuringcylinder A and the pistons B B', of the valvechamber C, provided with detachable end walls S and communicating with the cylinder A by an opening c, sliding valves d d', arranged in the valve-chamber C and connected by a valve-rod cl2, and arms or proj eotions d3, arranged in the cylinder A and attached to a shank projecting through the opening c and detachably secured to the valve-rod, substantially as set forth.

Witness my hand this 7th day of February, 1888.

VILLIAM T. FOX. Vitnesses:

CARL F. GEYER, CHESTER D. HOWE.

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