US154486A - Improvement in fluid-meters - Google Patents

Description

Z'Sheets--Sheetll B. H U BER.

Huid-Meters.

N0154,486 l Patented Aug.25,1874.

THE GRAPHIC C0- PHLYTOLITH.39&4| PARK PLACEIMY.

Fluid-Meters.

Paten-ted Aug; 25,1874'.v

WITNESSES.

UNITED STATES PATENT OFFICE.

BERTHOLD HUBER, OF BOSTON, MASSACHUSETTS, ASSIGNOE VTO HIMSELF AND FRAN'GIS'MEISEL, OF SAME PLACE.

IMPROVEMENTIN FLUID-METERS.

i Specification formingpar't of `Letters Patent No. 154,486, dated AAugust 25, 1874; application filed July 6,1874. i

To all whom it may concern:

Be it known that I, BERTHo'Ln HUBER, of-

Boston, Suffolk county, Massachusetts, have invented an Instrument for Measuring Fluids, i `of which the following isa specification:

.. upon both sides.

The-drawings accompanying this specication'represent, in Figure l, a plan, with part of the case removed; in Fig. 2, a vertical section of the whole instrument; in Fig. 3, Va section of the valves; in Fig. 4, a section of the actuating levers; and in Fig. 5, a view of the sectoral plate, to be hereinafter explained.

In these drawings, A represents a hollow closed cylinder, of equal diameter throughout, which constitutes the `case or shell of theinstrument, and which serves to contain the valve mechanism, and forms the measuringchamber. The case-A is divided centrally, `or nearly so, by an elastic `or flexible pulsating diaphragm, B, which is inclosed or clamped between the two halves a b of the case, this diaphragm serving at once to seal the joint between the two, and to impart to the valves the motion of the water escaping from such` case alternately upon opposite sides of such diaphragm. Upon one side or half, b, of the case A I cast a boss, b1,\and through-thisfboss I create a passage or conduit, 0, divided by'a central partition, al, whose two 'ends are outside of such case, `and `constitute one-viz., d

the water-inlet or induction-port, and e the water-outlet 0r eduction-port-while midway of such boss I create four orifices, f g h c', two v of which-viz., f g-communicate freely with the chambers a lof the instrument, and the other twoviz., h `if-with the chamber b. Upony the outer surface of the boss `b, and about each oriice, I .create a valve-seat; and to each pair f h and lg t' of ports I apply a double puppet-valve, 7c or l, each valve closing alternately the two ports with which it oper.- ates, it being observed that, while the port f is closedand the port h open, the port g is open and port i closed, and vice versa. In the present instance the valve-operating mechanism is located in the chamber a, and consists as follows: To one side of the diaphragm B, and centrally thereof, I attach one end of a rod, m, the opposite end of which is pivoted to the inner end of a lever, n, which, in turn, is pivoted at its opposite end upon a horizontal rod, o, supported within standards p p erected within the chamber, the lever n. straddling a radial arm, r, making part of a tubular rock-shaft, o, mounted upon the saidlrod o', and being provided with set-screws s 'c to operate with this arm, in such manner as to adjust Vthe relative positions of the lever and shaft and of the diaphragm with respect to the valves k and l. Immediately alongside of 'the rod m I dispose a bar, t, one end of which slides freely within a bearing, c, and the other end is connected, in a suitable manner, with the arm r,a spring, w, being coiled about the bar, and serving to force it toward and actuate the arm and rock the shaft o, as hereinafter explained. I furthermore mount loosely.

upon the rod or supporto a second lever, one end, y, of which bears upon the arm r,

and the other end, a2, is pivoted to the stem of the valve l, while to the hub b? of such lever av I secure an arm or second lever, c2, the free end of which operates in connection with a sectoral plate, d2, placed near it, and pivoted upon a post, c2, erected within the chamber a, and near to the valve k, as shown in Fig. l of the drawing. The plate d2 is overweighted by a weight, f2, applied to its upper kend, and is formed with a notch, g2, of a width somewhat greater than the diameter of the stud Iof the lever c2, with which it operates, the two sides of this notch serving,pat alternating periods of time, to actuate the said lever, as hereinafter. explained, while the stem of the valve k is pivoted to the lever c2 at about the center of the latter.

The two chambers a bare at all times full of water, such water entering lthe port d, and being linally discharged at the eductc.

Each pulsation of the diaphragm displaces a given amount of water, which escapes by the 'said educt c; and a suitable register is to be added to the meter, and connected in a proper manner with the rock-shaft, to indicate the number of pulsations 'of the diaphragm B, and, consequently, of the quantity of water discharged at each pulsation.

The operation of this instrumentor meter is as follows: Taking as a starting-point ltheposition of parts shown in the drawings, in which the diagonally-disposed ports' f and t', are

closed and g and h open, the lever c2 depressed and the weight f 2 bearing upon it,l while the diaphragm is distended within the chamber b, and the arm r' of the rock-shaft o at its lowest point and at some distance from the upper set-screw s; water begins to flow un- Yder a suitable head from chamber a, through the port g, into the conduit C, and escape from the latter by the educt e, while simultaneously with such flow water enters the chamber l through the port h. This circulation or ilow of water of necessity drives the diaphragm toward the chamber a, and continues until such diaphragm is distended, and passes into such chamber to its extreme limit, the lever n being elevated by'the diaphragm, and serving, by means of the arm r, to rock the shaft o, and, consequently, elevate the idle end ofthe bar t, and compress the spring fw. This move# ment of the diaphragm B, lever n, and rockshaft o continues, with the movement of the other parts of the mechanism, until the eX- treme limit of such diaphragm in this direction is reached, and the arm r passes beyond a mean line drawn through the centers of the rodo', arm 1^, and bar t, when the pressure of the spring suddenly throws the said arm r upward, and completes the partial rotation of such shaft, and by means of the lever elevates the free end of the lever c2A and raises the valve la, and at the same time tilts the sectoial plate d2, and throws the'weight from oif such lever, the lower side of the notch g2 of such plate d2 bearing against the stud of the lever. By the sudden throw of the bar t, and

the consequent elevation of the arm 1' and partial rotation of the shaft o, the said arm r' depresses the outer end of the lever w, and lowers the valve Z. The ports j' and t' are now open, and ports g and h closed; consequently water begins to ow from chamber b into conduit C through port t', and to fenter chamber a through port f, while the diaphragm retraces its movement, and by the flow yof water is forced toward and into the chamber b until its extreme limit in this direction is reached, \vhen,by the action of the bar t and spring w,-

the shaft o is rocked in an opposite direction,

the levers and c2 tilted until the valve k is lowered, and the valve lraised, the weight f2 shifted and allowed to bear upon the said lever c2, and the parts returned to the position assumed at the start.

As each distension of the diaphragm displaces an equal quantity of water, and as every distension is registered by the indicator, the amount of water passing through the instrument is accurately noted.

The meter may be adapted with equal facility `to register by'feet and inches, or by gallons and fractions of gallons, and operates with equal accuracy and certainty under any pressure or any volume of water. I have striven in devising this meter to avoid the objectionable feature of a dead-center in the shifting of the valves, and careful reference to the accompanying drawings will show that I rattainfmy object, as it will be seen that owing to the arrangement of the rocker arm or leverY n and rock-shaft o, in connection with the diaphragm B, that the movement of the latter is not confined to any specic point, but is free to travel, after the spring has effected the shifting of the valves, according to the position of the screws s s, or at least would do so did the valves permit it, and it will be seen that by this arrangement the diaphragm must move until the valves are reversed.

The only power to be overcome, and, consequently, the only pressure taken from the water, is what is requisite to compress the spring w, and shift the position of theweight, and to overcome the friction upon the bearings.

The spring maybe quite light, and, as the weight is not acted upon until the lever c2 has acquired considerable momentum, the loss of pressure is small.

The purpose of the weight is to maintain the valves in their proper positions during the transit of the diaphragm and the rocking of the lever n and shaft o, as, but for such weight orl its equivalent,the valves at such times would be without control, and inoperative to a certain extent. y l

By the employment of puppet-valves, which I provide with elastic faces, I avoid the very serious objections existing in the use of slides valves, such as rapid wear and breakage from the presence of sand or abrading substances in the water, friction between the valve and its seat, &c.

My meter may he made neat in appearance, and compact in form, and produced at small expense, as it is mostly cast directly into the shaft, and requires but little tting.V

I claim- 1. The lever u, in combination with the arm m, and levers w and o2, and the diaphragm and valves, substantially as herein described, whereby a dead center or point'is avoided, essentially as and for purposes stated.

2. In combination with the pulsating diaphragm, lever a, arm m, and levers a: and c2, the arm 1^, and rod and spring tw, as and for the purposes set forth.

3. The weighted plate d2 and rod and spring tw, in combination with the diaphragm-valves and system of levers m n m c2, as and' for the purposes-shown and set forth.

' BERTHOLD HUBER.y

Witnesses:

F. CURTIS, W. 'E. BOARDMANI

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