US125793A - Improvement in water-meters - Google Patents

Description

J. F. DE NAVARRO & HQC. SERGEANT.

l Liquid Meter.

Patented April16,1872..

` fun:

UNITED STATES ATEN'I" QFFICE.

JOS F. DE NAVARRO AND HENRY O'. SERGEANT, OF NEW YORK, N. Y., ASSIGNORS TO JOS F. DE NAVARRO, OF SAME PLACE.

IMPROVEMENT lN WATER-METERS.

Specification forming part of Letters lPatent No. 125,793, datedApril 16, 1872.

DIVISION A.

Specitication describing a certa-in Improvementin Liquid Meters, invented by J os F. im NAVARRO and HENRI' G. SERGEANT, both of the city, county, and State of New York. y This invention relates to water or other liquid meters, in which a swinging or reciprocating piston is controlled by a valve of cylindrical construction, having both Va vibratory motion about its axis and a longitudinal movement in direction of the length thereof, within a fixed abutment provided with ports or passages arranged to conduct the liquid to and pass it from opposite sides ot' the pistonalternately, said valve being hollow and formed with side inlets and outlets in upper and lower or divided sections of it. The improvement consists in a lnovel construction or arrangement of fixed ports or passages, in combination with a certain construction of inlets and outlets :in the valve, whereby the latter is balanced or relieved from one-sided pressure, so that after being lifted it is free to drop, unrestrained by lateral pressure.

Figure 1 of the drawing represents a vertical section of a meter having our improvement I applied to it; Fig. 2, a horizontal section on the line :r a',- Fig. 3, a vertical section at y y, Fig. 2, mainly of the chamber in whichthe valve works; Fig. 4, a longitudinal view of the valve detached; and Fig. 5, a plan of the valve motion.

The improvement is here shown as applied to a meter similar to that described in Letters Patent N o. 111,134, dated the 24th day of J anuary, 1871, and the means employed for operating the valve are of a like description to the devices there shown for such purpose. Thus, A is an outer chamber, to which the water or other liquid is admitted as by an inlet, b, and from which it is passed through the valve to opposite sides of thepiston alternately. B is the measuring cylinder or chamber, and G its piston, arranged to swing or work by or in upper and lower pivots or bearings c c, toward and from opposite sides, alternately, of an abutment, D. Said abutment is made hollow and with a cylindrical recess to receive down within it the cylindrical valve E that controls the motion of the piston. This valve has a vibratory motion about its axis, and an up-anddown movement in direction of the length of it to reverse the action of the piston. To this end, the valve is vibrated in part by its own weight and in part by the pressure of the water, operating to drop it by means substantially similar to those described in patent No. 111,134, hereinbefore referred to, and the valve, like that therein described, is constructed open, top and bottom, and divided intermediately of its length by a partition, d, into an upper receiving-chamber or section and lower discharging-chamber, the latter bein gin communication with a main outlet, e; but the inlets and outlets in the valve and ports or passages in the abutment are differently constructed to those described for the valve in said'patent, as here-- inafter explained.

As already specified, however, the motion of the present valve is similar, and the means employed `for operating it may be the same.. Thus, on the upper pivot of the swinging piston C is a pinion, f, arranged to gear with a toothed sector, g, that forms a lateral projection from a h ollow cam, F, which allows of the passage of the liquid through it to the valve, and is arranged so as to turn independently of thevalve, over which it s concentrically disposed, and forms an open eye to the moving sector. This cam is constructed on its opposite sides with reversely-arranged or double inclines h, that serve, as the cam is vibrated by the action of Vthe pinion j' on the sector g, in or during the motion of the piston C, to lift the valve by means of a cross-bar, G, attached to the valvespindle, and resting, by bevel-rollers i, on opposite sides ot' the cam F. The highest elevation of the valve takes place as the piston C approaches the end of its stroke in either direction, after which the slightest continuation in the vibratory motion of the cam F leaves .the valve at liberty to drop, by Fits bar G or rollers t', down either two of the opposite in the inclines h, to keep the valve to its turned position during the reverse movement of the cam. Said valve drops, when released from lift by the cam, to eii'ect the turning or reversal of it, as described, in part by its own weight and in part by the inlet uid rushing down through and pressing on it. The valve-stem may be provided with a plunger at its lower end for entry within a dash-pot, to prevent concussion of the valve in dropping.

The valveseat portion of the abutment is provided with four oppositely-disposed vertical ports, l l and m m', through either two opposite ones, Z and m or Z and m', of which the liquid is alternately admitted to and passed from the cylinder by the operation of the valve to keep up the swinging or reciprocating action of the piston. The two front ports l Z open directly within the cylinder B, but the rear ports m m communicate with vertical spaces or passages n a in the abutment, the one passage n of which connects with the cylinder by an upper opening, o, on the one side of the abutment, while theother passage n connects with the cylinder by a lower opening, o', on the opposite side of the abutment. The valve E is provided, above the partition el, with oppositely-disposed inlets r r', and below said partition with oppositely-disposed outlets s,

arranged at right angles with the inlets relatively to the axis of the valve. These inlets and outlets, as also the lateral portions of the valve separating them, are of an enlarged width as compared with the ports l l and m m.

vBy means of the rear fixed ports m m', in combination with the valve, constructed as described, said valve is balanced, as regards any lateral pressure of the iiuid, inasmuch as it is exposed to the same pressure at either port m or m that it is at the opposite port lor Z. This balancing of the valve gives it a freedom in dropping which ettectually prevents sticking.

Supposing the valve to be in the position represented for it in Fig. 2, the piston is caused to travel in direction of the arrow 2, water entering the cylinder B from the upper section 0f the valve through the port l, also through the lower opening o by the passage n', as indicated by the arrows 1 l 1 in Fig. 2. At the same time the exhaust-water passes off by the port l into the lower or discharging section of the valve, and out to the outlet c through the valve-ports s, as indicated by the arrows 2 2, alsol through the upper opening o, down the vertical passage u, and out through the valve to the exhaust, as indicated by the arrows 3 3 3.v In this way the valve is exposed on its sides to opposite or counteracting pressures, both ot the incoming and outgoing fluid, and

a like balancing exposure takes place under a' reversed position of the valve also, during the whole action ofthe valve. This prevents sticking of the valve, and allows it to drop as re quired to effect reversal of the ports. When the valve is reversed the port l and opening o become the inlets for the fluid, and the port l and opening o the outlets therefor. A

What is here claimed, and desired to be secured byl Letters Patent, is-

rlhe combination, with the valveE con structed and operating substantially as described, of the ports m m', the passages u n', the openings o o', and the ports l l', the whole being arranged in relation with each other and the abutment D of the cylinder, essentially as specied.

J. F. DE NAVARRO. Witnesses: HENRY C. SERGEANT. v

FRED. HAYNEs, Fnnn TUscH.

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