USRE14206E - A fibm doing business as habbison safety boh - Google Patents

Description

G. H. GIBSON. BALANCING AND MEASURING APPARATUS. APPLICATION FILED APR-1,1916. Reissued Oct. 24:, 1916.

wi t W200 G. H. mason.

. BALANCING AND MEASURING APPARATUS. APPLICATION FILED APR. 1 I916. Bmssued x Oct. 24, 1916. 14 206 5 sun's-swan 2.

- G. H. GIBSON. BALANCING AND MEASURING APPARATUS.

Reissued Oct. 24, 1916. V

APPLICATION FILED APR. 1. 1916.

All

FIQ.

ALEZI .e. H GIBSON. BALANCING AND MEASURING APPARATUS. Reissued Oct. 24,1916.

APPLICATION FILED APR-1| 1916. Z

5 SHEETS-SHEET 5- :1 Mrs TOR Wihawo enonenn. unison, or 16mm it h Ae'sienon 'ro .rosm s minor, wn-nrur armnnownn, a 0. mm, ALL or rmanmnn, rmvnsrnvan'ra, a rnur nonverusnvnee" As-nuinrson sunrr Bonn wonxs.

mum arrm'ros; 14,20o. 1-.museums-immanent. Reissued Oct. 24, 1916.

Originll rt. 1,100,278, dated Imnber 18, 191 5, Serial No. 670,883, Med January 12, 1912. Application for reissue fled April 1', 1918. Serial Io. 88,392. f

Toallwhomitnmy concern: througha weir preferably includes provi- Be it known that I, Gnonon H. GrpsoN, a sions for obtaining direct readings in quan-- '6 citizen of the United States of America, retity units of measurement, which may be siding in Montclair, county of Essex, 1n the indicated or recorded, or both, and for inte- 5 State of New Jersey, have invented certain grating and registering these results.

new and nsefullmprovements in Balancing The various features of novelty which and Measuring Apparatus, of which the folcharacterize my invention are pointed out 80 V lowing is a true and exact description, refwith particularity in the claims annexed erence being had to the accompanying draw to and forming a part of this specification.

ings, which form a part-thereof. F or a better understanding of the invention;

' My present invention consists in novel however, and the advantageshpossessed by it,'

means for balancing a variable force which reference should be had to the accompanying 65 are particularly adapted for use in flow drawings and descriptive matter in which measuring apparatus, and the prhnary ob- I have illustrated and described forms in ject of my invention is to provide simple, which my invention may be embodied.

' reliable and effective apparatus for deter- Of the drawings: Figure 1 is a diagrammining the quantity rate of flow of a liquid matic representation, with parts shown in 7Q over or through awe r. sectional elevation, of apparatus for meas- The present invention is'of especial utility uringthe flow of a liquid, as water, over a in measurin the flow of a liquid through weir located 'in a weir chamber in which a weir chamfier in which the pressure of the the va or pressure may be above or below vapors or-gases above the liq id is different that o the atmosphere; Fi 2 is a sectional 76 from that of the atmosphere. elevation 'of a portion 0% the apparatus I In some of its aspects-the present invenshown in Fig. 1;Fig. 3 is an elevation of tion is to be regardedas an improvementon another portion of the ap aratus shown the invention disclosed and claimed, in my Fig.1; Fig. 4 is a plan of a portion of th.

prior Patent 1,015,556, granted January a'ppamtus shown in Fig. 1; F' 5 is a sec-' 23rd, 1912. In other aspects, however, the tional elevation taken on the fine 55-of invention is not limited in all of its fea- Fig. 4, but onia'larger scale than the latter :0 tons to use in liquid flow measuring appafigure; Fig. 6 is a partial sectional elevaratus or in any kind of measuring appa-' tion ofthe apparatus shownin Fig. 5, taken ratus. 5 on the line 6-6 ofthatfigumfbutpn a The quantity rate of flow over or through larger scale than Fi 5; Fig. 7 is a sectunul a weiris in general a function of the pres'- elevation of a mo ified measuring apps.-

:5 sures prevailing on the two sides of the ..ratus;' Fig. 8 is a view showing-a portion weir, and where the discharge of a liqunr-of the apparatus shown in Fig. 7, taken over or through the weir is not opposed by" similarly to Fig. 7 but on' a larger scale; hydrostatic presure on the side Fig. 9 1s a somewhatdmgrammatm repreof theweir, is a function of the hydrostatic sentation, with parts in sect onal elevation, 1

lopresure or head on the supply 'side of the of a. form of measuring apparatus;-

weir, but, in generalfis not directly proand Fig. 10 is anelevatlon partly 1n section portional to such hydrostatic T measure or v of a fourth form of measuring apparatus, a5.

- head. a For where a 'quid flows The apparatus shown in Figs. 1 to 6o;f tho..;.

' through a V-shaped weir orifice or through drawings comprises a water heater-.A'of .the

45 a series of V-shaped orifices having their open water type n which water 18- n a ices at a common level, with a free heated-by the direct aetionof th the quantity rate oi a variable steam pressure v'ailsl'mo flow is approximately proportional to ordinarily from a pressure five halvespower of the h t It of'liquid below or equal to the pressure of the alt-- 80 level on the supply'side of the weir above 'i'nosphere up to a pressure of ten-or twenty.

the weir notch apex level 'i. a. to h' pounds above atmozghe P Q improved. a paratus' which. I employ for the heater proper e water is dlschargedmi measuring quantity rate of flow over or into a weir chamber'B 'oontemmgaweir' Cj ber E is iii-the form ing an 1 against end with a flange F a horizontal screw .the 7 cylinder F in water on the formed with one or more V-shaped discharge orifices C, which, if there bemore .than one, have their apices at a common level. -The vapor pressures in the heater 'A and weir chamber B are equalized by a conduit D open at its opposite ends to the two chambers above the water level ineach.

In the apparatus disclosed in Figs. 1-6 the rate of how isdetermined by measuring the flotative efiect of the water atthe supply side of the weir on a float O, which might'be placed in the weir chamber on the supply side of the weir, but which for various reasons, I prefer to locate in a separate receptac'le or casing E.

As shown in the drawings, the float chamof a cylindrical casing with. an integral bottom and a removable cover E.

E represents a port adjacent the, lower end of the cylindrical wall'of the float chamber, and connected to the weir chamber B at the supply side of the weir and at a level below the weir notch level by pi E A port E formed in the walfiif the float chamber adjacent its upper end is connected by a pipe E to the weir chamber B abovethe water level therein. The upper portion of the float chamber is of larger diameter than the lower-portion thus providing an annular shelf E which is located above the highest water level which it is'expected to have in the weir chamber and formsa sup port for the float and cotiperating mechanism' by which the flotative effect of the float is balanced and measured. This mechanism comprises a vertical cylinder F having bolted to it two similar arms F and a third arm F. arms F, F and F is provided at its outer end with a threaded vertical socket receivadjusting screw- G which directly engages the shoulder E." The arms F, F are each formed at their outer ends with knife edges F adapted to impinge directly the cylindrical wall 6f the float and the arm F is termed at its intowhich is threaded G having a sharpened be forced into contactwith the cylindrical wall of the float chamber. The supportin provisions described make it readily feasi le to adjust the cylinder F vertically and to properly aline the cylinder and after therdesired vertical adjustment and alinem'ent is secured, to securely Io'ck place in float chamber E. The upper and lower ends of the cylinder F are closed} b diaphragms H and HA formed of'flexi le metal or other suitable material and are secured in place b clamping F and externally threat ed rings chamber end adapted to F screwed threaded annular extensions of the cylinder Ft The disk like proiwtion and lower clamping nuts M Each of the three ends with a shoulder J,

abuts againstmember J 5 is provided-with a stem J avclamping nut J against the upper side of the diaphragm H by means of an clamping screws K cured at its ends to the upper ends of a U- shaped yoke member L. -The latter is formed with an aperture below, and alined with thexcylinder F, which receives a member M formed with a disk-like head M clamped against the under side of the diaphragm HA by means of a washer M and a clamping screw M The body of the member M is externally threaded and is locked to the yoke-member L with a capacity for axial adjustment, by means of upper To prevent an undesirable accumulation of water 0 condensation on the upper side of the diahragm H, vent passages F and F are formed respectively in the upper clamping ring F and in the adjacent portion of the cylinder F.

The cylinder F is interiorly divided into upper and lower compartments f and f", respectively, by means of a transverse web or partitiomF formed with arcen trally disposed i-aperture having threaded into it a valve seat member F. The latter is formed with an axial port rounding the lower end of the port. The port F is controlled by a valve J adapted to moveinto and out of engagement with internal washer K and The crossheadK is se-' F and A valve seat surseat member F The latter. is provided with a cylindrical depending flange F extending nearly to the washer M and when the port F is openedg'the fluid pressure in compartment 'f causes water collecting in the compartment in any amount to be. forced through the pertF into the compartment f. The stem J of the valve J passes upward through the valve seat member and is provided between its and at its upper end is threaded to receive a nut or head J '(llhe ortion of the stem between the shouler member J. A coiled spring J interposed between the nut J and yoke member J, tends to hold the yoke and the valve stem in the position shown in which the yoke the shoulder J. The

screwed into and another at 'its upper end. screwed on the portion J bears against the guide sleeve K threaded into the crosshead K and locks the parts securely together. and L are provided to positively limit the movement of the to thdvery small amount and seal the port FF. The member 31 is termed with er -threaded socket M extending ing a lower threaded portion J the crosshead extension K threaded portion J 8 required to open considerable z and the nut J passes through a yoke oke I Adjustable screws K yoke and attached parts ma into a from its 1 lower end. Thissocket receives the upper end ofthe stem N of the float O.

represents a clamping nut for clamping the stem N and member M together in any desired adjustment. The stem N is engaged by a counter-balancing lever P which is fulcrumed in a bracket P secured to and depending from an extension F of the cylinder F. As shown the lever P carries knife-edge pivot members 1 and P pass- 1ng through and engaging the walls of apertures formed in the stem N and bracket P.

' described.

respectively. The lever P has a weight I" adjustably mounted on its free end. Preferably the counter-balancing lever P and its weight are arranged and adjusted to-exactly balance the weight of the float O and the parts connected to it so that the only forces tending to move the diaphragms H and HA out of their normal posi ions are the lifting force of the water on the'float O and the opposing thrust of the pressure fluid admitted to the cylinder F as hereinafter should be heavy enough so that it tends to hang vertically in the liquid in which it is more or less completely submerged as any side thrust due to the flotative action of the liquid is thereby avoided. Preferably I makethe float hollow and of metal of such a character that its weight and contour. are not 'afl'ected by the conditions to which it is I subjected in use.

The provision of the cylinder F of Figs.

1 to 6 with the opposed diaphragms H and HA make this form of balancing device en- 'tii'ely independent of the vapor pressure in the weir chamber. -The counter-balancing function of the diaphragm HA closing the end of the compartment of the cylinder which is in free communication with the atmosphere is unnecessary of course, when the pressure in the'weir chamber is equal to that of the atmosphere, but the presence of this diaphragm is in no wise prejudicial to the use of the apparatus in such case.

Preferably Iso form the float O that the flotative efl'ect exerted on it by the water admitted tothe float chamber E bears a constant ratio to the flow over the weir as the water level on the supply side of the weir rises and'falls. To accomplish this I arrange the float so that its lower end-is at the weir notch apex level and shape the float so that the volume of water displaced by it varies as-does the flow over the weir .with changes in the height of .water level of the we nfn ieib on the supplyv side of the Weir. With a weir having one or more V-shaped discharge notches or orifices the rate of flow is given by the'equatioii r=ah where (r) is the rate of flow in suitable (k), is the height of the .wagglmrel .t and Advantageously the float 1 O tall when necessary.

fixed by the character of the weir notch or notches and by the relation between the.

units in which (1) and (h) are measured. In such case the float 0 should be so shaped that the volume" ('0) of the .portion' of the float below a horizontal plane at any distance (h) above the weir notch apex level is given by the equation 'v=bh (b) being aconstant. From the two equations given above we see that the volume' ('v) is equal to the rate of flow ('r) multiplied by a constant %for all normal variations of the height (h) of the water level on the supply side of the weir. The fiotative effect or upward thrust exerted by the wateruon the float O is equal of course to the weight of the volume ('v) of water displaced by the float. \Vhile the" peculiar contour which I give the float possesses the'important advantage of making unnecessary. other and in general more complicated and less satisfactory pro- I visions for obtaining proportional readings in quantity units of flow, my invention in some .of its aspects is not dependent upon giving the float any particular form. Those skilled in the art will readily understand hbw to vary the shape of, the float O in for any weir may be determined experimen- The provisions for balancingthe lifting action of the water in the float O comprise means for automatically maintaining the proper fluid pressure in the lower compartment 7 of the cylinder F. This I accomplish by connecting a pressure vsupply pipe Q to the compartment f. The pipe Q leads from a source of pressure, as for instance,

the tank Q' which' may be supplied constantly, or from time to time, with some:

pressure fluid, as for instance, compressed air furnished by' a compressor, not shown.

The pipe Q includes a. section Q (see Fig, 2) in which is placed a diaphragm Q formed with an orifice Q restrictedso that the flow through the orifice is comparatively slow, and so that the pressure on the outlet side of the orifice does not necessarilyap proximate the pressure on the supply side of the orifice. With this arrangement pres,- sure fluid is constantly supplied to the com partment ,f' of the cylinder F. Whenever,

than isnecessary to balance the liftce exerted on the float O by in contact with it, the: consequent slight the pressurein the compartment f becomes H p the downward movement of the diaphragm and connected parts causes vthe valve J to open rt- F". allowing some of the pressure flui to escape into the .upper compartment f of the cylinder which is freely open to the atmosphere through the vent ipe R.. Conversely, when the pressure in t e lower co mpartment f of the cylinder is less than that required to balance the lifting action of the water onthe float, the valve J is moved to close the port F and the pressure in the sure in the lower com artment f and in the pipe between the cylinder orifice Q is directly pro-i portion of the and the restric portional to the quantity rate of flow over parallel tothe axis of the drum by the presthe weir and this rate of flow may be indicated b gage as or instance the gage S. connected to the branch pipe Q. Similarly-the flow may be integrated and recorded by a simple recordin' instrument comprising, as conventiona illustrated a drum T, rotated by a clock mechanism U, and a pencil T. maka record on the drum T and moved sure in the pipe Q, acting in one direction against the piston T, working in the; cylin der T. and also acted upon by the restoring spring T. .Similarl thej'flow may be in:

' from the center of th W and a piston workin -therein' and actedon in one, direction by t e spring W',' devices is to directly receive and transmit to the balancing and' measurin te'grated by a simp e register of common kind. The register fdr this purpom, conventionally illustrated in Fig. 1, comprises-a disk W,-driven at a constant of rota- .tion by a clock UA .and engaged by the periphery of-a small disk W- carried--by-a-= shaft '-W, the" axis of which intersects the axis 0 vrotation of the disk W. The shaft 'W' splinedto the worm W- of acounting-train W and is moved toward and away 'sk' W by a cylinder and in the opposite direction by the pressure in the pipe Q. A swivel connection W heater rovi A, a 05d water (see Fig. 3) is laced between the stern. W" of the piston and the disk W.

'7 and 8,AA remntsthe tank of a water a steam supply pipe mppl pi onto watu-apamdingmortnysA' 10- means of an ordinary pressure" In the modification illustrated in the trays'iA there is located an inclined partition A which forms the roof of a weir chamber A formed within the tank AA. The gas or vapor pressures in the weir chamber A and in the heating chamber proper are equalized by the hooded equalizn ,connection A. 'A channel A is pro- :Yi ed at' one end of the weir chamber through which the water running down oil the partition A may pass to the underside of a filter bed A extending across the bot tom of the weir chamber at the supply side of the weir C.

Inthis modification the water flow" over the weir C is measured by weighing the amount of water contained in a bucket A and having a port in its bottom connected to the supply side of the weir C by a flexi le ipe X which may be a rubber hose. T e

scribed, and is arranged with the bottom of its cavity at the weir notch apex level. Thebucket is supported by a s mdle NA con- ,nected to the diaphragms o a cylinder FA which' with itsconnected arts may be exactly like the cylinder F tdescrlbed, ex-

c'ept' that in this case the valve member JA corresponding to the valve J m the construction first described, is on. the upper side of the port connecting the two compartments 4'' and f into which the cylinder is divide ,and in. this case the uppercompartment f is the compartment slowly supplied with com ressed air or other pressurefluid through t e pipe QA, while the outlet pipe RA leads 'from the lower compartment As shown, the' cylinder FA is mounted manannular support EA secured through a bracket E to the side wall of the tank -AA. A represents the removable cover for an opening through which the cylinder FA'and connected parts may be adjusted.-

It will be readily apparent to those skilled in theart that w1th the internal surface of the ,bucket X shaped as described, the balancin pressure in the cylinder compartment be exactly proportional to the amount of water flowing over the weir.

Theoperation of the bucket X is thus analogous to that of the float O fi t .described since the function of each of these force. equal to the weight 0 a column of the: liquid flowing over the weir which column extends from the weir notch apex on so that the weight of the columnbearsaconstantratioatalltimestoflle member X' located within the weir chamber provisions a min-rumma e exerted on the float 0.

Since the weight rather than the volume of the liquid flowing over the weir is measured by the apparatus described herein, this apparatus has an inherent capacity for minirmzlng errors in measurement resultin from changes in temperature of the liqui flowin over the weir. For, While with a given height of surface level on the supply side of the weir the rate of flow over the weir in pounds r second decreases with the density of the hquid as the temperature of the. latter rises, the weight of the column of water di laced by the float O or received in the bucket X also decreases as the density of the liquid decreases. While the bucket arrangement illustrated in Figs. 7 and 8 is, as I have indicated, an equivalent in a broad way for e the float measuring mechanism of Figs. 1 to 6 and is intended to be generically claimed in this case, specific features of construe as working in a tion and arrangement shown. in Figs 7 and 8 are not claimed herein but are claimed in another a plication, Serial No. 746,280, filed me Fe ruary 5, 1913 as a division of an application filed by me on January 12, 1912 which has resulted in Patent No. 1096621, granted May 12, 1914.

While the fluid pressure means described forms a preferred means for balancing and measuring the water displaced by the float O or received by the bucket X, other balancing and measuring provisions may be employed I and in Fig. 9 I have shown one example 0 a modification in this respect. In represents a weir chamber attached to the s1 inlet and outlet compartments by a notched weir C, and Orepresents a float similar to that first described and located in the weir chamber onthe supply sideof the weir with its bottom at the weir notch apex level. The float O is carried by a slender stem NB which extends through a cover late B normally closing an aperture e top of the weir chamber B, suitable means, such as the labyrinth packing B being provided to prevent leakage along the stem; Atits u rendthestemNBisconnectedtoayo e pivotally connected to a beam Yfulcrumed in a bracket B" carried b the cover plate B. The free end of the ever Y is shown slotted bracket B" and carries a contact Y adapted to the stationary contacts Y and Y, shown as carried by the bracket B" accordingly as the free end of the beam moves up or down from a neutral position. The-contacts Y, Y and Y are connected by suitable con- Fig. 9, B,

e of a heater tank A and divided into lar mechanism is described and claimedin 605,878, filed February ductors to the three terminals of a motor Y. The conductor running from the motor to the contact Y includes a source of current,

conventionally indicated at 'Y. The shaft of the motor. Y is geared to a shaft. Y' on which is mounted a gear wheel Y" meshing with a rack bar Y which has one end con nected to the lever Y by the ring Y". I

The motor is of such a c aracter that when the fall in level of the water on the supply side of the weir results in moving the lever Y contact Y engages the contact Y, the motor Y will beset into rotation in the direction to elevate the rack bar Y until the increased tension of the spring Y is suflicient to move into the position in which the the contact Y into, its normal neutral position. Conversely, when. the increase in height of water level on the supply side of the weir results in moving the contact Y into engagement with the contact Y", the motor turns in the opposite direction to d crease the tension of the spring Y It will be apparent without further explanation that the tension of the spring Y will be "inversely proportional to the flow of waterover the weir and that the angular osition of the gear bpel Y and of the s aft Y" at any instant will be proportional to the spring tension. An arm X secured to the shaft Y" and playing over a suitably graduated dial X" thus furnishes a visual indication of the amount of water flowing over the weir and this arm X may be readily employed to adjust in a known manner, the connection between the clock driving mechanism and the counting wheels proper of a register X in order to integrate the quantity of water flowing over the weir during a given period. t.

Thepart'cular means employed in Fig. 9 for adjusting a novel with me, is not claimed herein as simimy prior copending application, Serial No.

The apparatus shown the objection, not e rienced with the ap-, paratus shown in "Figs. 1 to 8, that errors are introduced by. variations in pressure within the weir chamber because of the un-' balanced pressure action on'the stem NB passing throughthe top wall of the weir chamber. However, the cross-section of this stem may be made sinall'enough so that this error is negligible under'many conditions.

The measuring apparatus constructed in accordance with the principles hereinbefore demribed may beemployed for/other 'urthan those hereinbefore referre to,

or instance, this apparatus is readily available' for measuring the flow of li uid balancing force, while in Fig. 9 is open to W la-tter figure Z represents'a weir chamber interposed between pipe sections .Z' and Z transmitting oil water or other li uid under pressure; ,th weir chamber throug the pipe section Z and passing out throu h the pipe section Z. '0 represents a float o the s ecral configuration hereinbefore' describe which is arranged on the supply side of the notched weir O with the bottom of the float at the weir notch apex level. The float- O is con- 'nected to a cylinder F, which, with its connected partsmay be identical with the cylinder F and attached parts of Figs. 1 to 6.

The cylinder F is mounted in a support EB forming a removable part of the top wall of the weir chamber. .To prevent the level of the liquid from rising on the outlet side of the weir C to an extent suflicient to interfere with the,flow of the liquid over the weir I provide means for' injecting a permathe weir chamber.

termined elevation of the float Z, to con-' 3D nent gas, as ordinary, atmospheric air, into As shown this means comprises a valve Z operated by a float Z located within the weir chamber on the outlet, side of the weir and rising and falling with the liquid level on that side of the weir." The valve Z is adapted, on a predenect-the compressed air supply pipe Q to a branch pipeQHwhich opens to the weir chamber at the upper end of the latter.

Similarly on a predetermined fallof. the float Z the valve Z is operated to connect the pipe Q, to a vent pipe Q". With-this arrangement the valve 2' automatically regulates the vapor pressure in the weir chamber to the extent required to prevent an undesirable accumulation of liquid on the supply side of the weir, while at the same time the pressure is kept down to a point where it does not interfere with the proper flow of liquid through the weir chamber.

While in accordance with the revisions of the statutes I have illustrate and de-' scribed the best forms of my invention now"- known to me, it will be apparent to those skilled in the artthat undersome conditions certain features of my inventionmay be used with advan age without a correspondmg use of other features, and that-changes may bemade in the form of the a paratus disclosed without departing from t e spirit of my invention. In particular it is to be understoodnthat neither the form nor the mode of support of the fluid pressurebalancing nrec anism disclosed form essential features of my invention inits. broader as sets. 4

' aving now described my invention what I claim as new and desire to secure by Lete 1i uid flowing into the p the liquid rises. and falls is having a surface in contact with the liquid flowing over the weir at and below'the surface level of the liquid on the supply side of the weir, and a weighing mechanism connected to and balancing said member and adapted to maintain thelatter in aisubstantial y stationar position notwithstanding variations in said thrust, said member'having its contacting surface so shaped that the thrust imparted to the member by the liquid will bear a constant ratio to the amount of liquid flowing over the weiras said surface level rises and "falls.

2. Liquid flow measuring apparatus comprising in-combination a. weir over which the liquid to be measured flows, a weighin mechanism, and amember connected to an balanced by said mechanism and havin a surface in -contact with the liquid flowm over the weir at and below the surface leve of the liquid on the supply side of theweir and being so shaped that the thrust iinpa'rted *to themember by the liquid in contact therewith will bear a constant ratio to the amount of liquid flowing over the weir as said surface level rises and falls. i

3. Liquid flow measuring apparatus comprising in combination a weir over which the liquid tobe measured flows, a float in contact with ,the liquid flowing over the weir at and below the surface level of the liquid on'the supply side of the weir, and a weighing mechanlsm connected to and balancmg said float, the latter being so shaped that the variable quantity of liquid isplaced by the'float as the surface level of the. rate of flow over the weir.

4. Flow measuring apparatus comprising I in combination a receptacle containing a liquid the height of surface level of which proportional to is a function of but is not directly proportional to the rate of flow to be measured, a float subjected to the flotative force of the liquid, and a weighing mechanism connected to and balancing said float and ada ted to maintainthe latterin a. substantiay sta-- tionary osition notwithstanding variations in said orce, said float being so, shaped that the variable quantity'of liquid dis aced falls is prqportional to the rate of-flow.'

5. Liqui the liquid to be measured flows, a substan-.

tially stationary member having asurface in contact-with .the liquid flowing over the weir between the actual level of the liquid surface on the su pl side of the weir at any instant, and t e lbwermost level of the last mentioned surface at which liquid will flow measuring apparatus cqm-, pr1smg in combination a' weir' over which b5 in it as the surface level of the liquid rises'an flew' over the weir, and so shaped that member receives a thrust from the contactmg hquid'beannga constant ratio to the 7 amount of liquid flowing over the weir as te'rs Patent is:

' 1. Liquid flow measuring apparatus. com-- prising in combination a we r over which 55 the liquid to be measured flows, a member.

the level of said liquid surface rises and falls, fluid pressure means for balancing said thrust including a pressure chamber in which the presure varies proportionally to said thrust, and means for measuring said pressure. I

6. Flow measuring apparatus comprising in combination a receptacle containing a liquid the height, of surface level of which is a function of the rate of flow to be measured, a substantially stationary float subjected to the-varying flotative force of the liquid as thesurface of the latter rises and falls, means for impressing a force on said float equal but opposite "in direction to said flotative force, said means including a pressure chamber and means for maintaining a fluid pressure in said chamber proportional to said flotative force,'and means for measuring said fluid pressure.

7. Flow-measuring apparatus comprising in combination a receptacle containing a liquid the height of surface level of which is a function of, but is not directly proportional tothe rate of flow to be measured, a substantially stationary float subjected to the 'flotative forceof the li uid' and so shaped that the variable quantity of liquid displaced by the float as the surface level rises and falls is proportional to the rate of flow, means for impressing a force on said float equal but opposite in direction to said flotative force, said means-including a pressure chamber and means for maintaining a fluid pressurein said chamber proportional to said flotative force, and means for measuring said fluid pressure.

8.. In flow measuring apparatus the combination of a cylinder formed with a partition dividing the cylinder into two compartments, diaphragms closing the endsof the cylinder, a member, means operatively connecting said member to the two diaphragms, and acted upon by the fluid flowing, provisions for maintaining a constant fluid pressure in one of said compartments, and means automatically nsive to the force exerted on said member y the fluid flowing for maintaining a pressure in the othercom partment suflicient to balance said force.

9. In flow measuring apparatus", the combination of .a cylinder formed with a parti-. tion dividing the cylinder into two compartments, diaphragms closing the ends of the cylinder, a member, means operatively con-i necting said member to the two diaphragms and acted upon by the fluid flowing, provi- -si0ns for maintaining constant fluid pres sure in one compartment, means automatically responsive to the force acting on said member by the fluid flowing for maintain-- in a pressure in the other compartment sufficient to balance said force, said means comprising a discharge connection from, and a pressure fluid supply connection vto other compartment, one of said connections being restricted, and a valve responsive to the movements of said member and controlling the other connection.

10. In flow measuring apparatus the combination of a float chamber, a vertical cylinder mounted in said chamber and formed with a partition dividing the cylinder into upper and lower compartments, diaphragms closing the ends of the cylinder,afloat, means operativcly connecting said float to the two diaphragms, provisions for maintaining a constant fluid pressure in the upper compartment, and means automatically responsive to the flotative force acting on said float for maintaining a pressure in the lower compartment sufficient to balance said force.

11. In a flow measuring apparatus the combination of a float chamber, a vertical cylinder mounted in said chamber and formed with a partition dividing the cylinder into upper and lower compartments, diaphragms closing the ends of the cylinder, a float, means operatively connecting said float to thetwo diaphragms, provisions for maintainlng a-constant fluid pressure in the upper compartment, and means automatically responsive to the flotative force acting on said float for maintaining a pressure in the lower compartment suflicient to balance said force, said means comprising a discharge connection and apressure fluid sup-.

ply connection to said lower compartment,

one of said connections being'restrlcted, and a valve responsive to the movements of said float controlling the other connection.

12. Flow measuring apparatus" comprising a cylinder provided with three, or more vertically adjustable support engaging members'and with three or more horizontal support engaging devices, a support provided with a horizontal shelf or shoulder on which said vertically adjustable members rest and provided also with a shoulder at an angle to said horizontal shelf against which said horizontal' support engaging devices bear, and provisions for adjusting one'of thelatter to clamp the cylinderin place, a member operativ'ely connected withsaid cylinder and suspended in position to receive a thrust responsive to the flpw tobe measured, and automatic provisions'for regulating. the

rest, and with a cy indrical surface against shelf I rt engaging members said which said sharpened means impinge, one of ..mg a constant pressure in said second compartment, and an operative connection besaid sharpened means being adjustable toward and away from the cylinder whereby the cylinder maybe clamped in place, a liquid engaging member operatively connected to said cylinder and adapted to receive a vertical thrust responsive to the rate a and automatic provisions regulatingsaid member by the fluid flowing, comprising a compartment located within said chamber and having a movable wall, means for maintaining a variable pressure within said compartment pro o'rtional to the thrust exerted on said mem r, and means for balancing the pressure exerted on the outer side of said wall comprising a second compartment located wlthin said chamber and having 'a movable wall and provisions for maintaintween said member and both-of said movable walls. i

15 The combination with a liquid con-. tainmg receptacle, of a float acted u n by he liquid in 'said receptacle, and'flui pressure means for balancm the flotative effect on said-float of the liqui comprising a compartment having a movable wall, means for maintaining a variable pressure within said compartment proportional to said flotative eifect and means Lstricted and the other or balancing the pressure exerted on theouter side of said "wall, comprising a secondcomp rtment having a movable wall, provisions or, maintaining a constant pressure in said second compartment,

and an operative connection between said. 7

fluid pressure-means for balancing the thrust imparted to said member by said liquid comprising a compartment having a movable wall, means for maintaining a variable pressure within said compartment proportional to the thrust exerted on said member, means for balancing the pressure exerted on the outer side of said wall comprising a second compartment having a movable wall and provisions for maintaining a constant 'pressure within said second compartment, and an operative connection between said member and both of said movable walls.

17 In combination a cylinder formed with a partition transverse to the length of the cylinder a dividing the latter into two compartments, diaphragms closing the ends ofthecylinder means operatively connecting the two diaphragms for simultaneous movement s, and, means for maintaining a fluid pressure'in one of said com rtments adapted to balance the action of a orce tending to move Said diaphragms in' a direction decneasing the volume of said compartment,

said means comprlsin a valve actuated by the movements of sai diaphragms, a pressure fluid supply connection and a vent connection, one of said connections being re- 1 being controlled by said valve. GEORGE H. GIBSON,

Images