Патент USA US2406877код для вставки
Sept. 3, 1946. A, R. wHlTTAKER '2,406,877 OSCILLATING DISK METER Filed Nov. 27, 1943 5 Sheeìs-Sheet 1 Sept. 3,1946.` A_ R_ wHlTTAKER ~ , ` 2,406,877 OSGILLATING DISK METER Filed Nov. 27, 1945 3.5heets-Sheet 2 ' r ATTORNÉY Sept-3, 1946. v A, WHlTTAKER V _ 2,406,877 OSCILLATING DISK METER Filed Nov. 27, 1945 l s sheets-sheet s .lî'llgôî ` 68 119 v A ‘ ».19 ` ‘ o .v_ ‘5401?¿39 “04136 INVENTQR ¿lfm ÉTÉ/W 2,406,877 Patented Sept. 3, 1946 UNITED STATES PATENToFrIcE OSCELLATING DISK METER Alexander R. >Whittaker, New York, N. Y., as signor to Pittsburgh Equitable Meter Comp-any, Pittsburgh, P'a., a corporation of Pennsylvania Applicationv November 27, 1943, Serial No. 511,931 17 Claims. (Cl. ’7S-257) . l The present invention -relates to fluid meters, and particularly to those of the oscillating disk type. . This is a continuation-impart of my co-pend ing application, Serial No. 420,407 ñled Novem ber 25, 1941. I It is an object of the invention to provide a meter of this type having great accuracy over a Wide range of flows. i 2 ` which prevents damage to the measuring cham ber in case of freezing of the fluid within the meter. In the type of meter having an en closed reduction gear, the gear chamber has U1 means interposed between the measuring cham ber and the housing stop lugs, whereby the bot tom c_over also serves to releasably hold the gear housing in place. This allows expansion of the measuring chamber away from the gear housing It is a further object to reducel the pressure 10 in case of freezing, and as the measuring cham absorption in this type of meter. A further object is to reduce the size of the measuring chamber while .increasing the rate of flow therethrough. l Another object is the provision.A of a meter of this type in which internal pressure due to freez ing of water inthe meter will not 'damage the gearing, meter chamber, or other parts of the ber is divided, the two halves will also separate in case of freezing, thus preventing damage to the gearing, gear housing, measuring chamber or measuring disk. Preferably, the measuring chamber is divided at its middlel to facilitate its manufacture. . g ‘ I The invention will be described in greater de tail in connection with th-e accompanying draw ings, wherein is shown a preferred embodiment meter. of the invention by Way of illustration and 20 A further object is to provide a meter of this wherein: type in which a single means releasably' holds the Figure 1 is a vertical sectional View of a pre gear casing, measuring chamber and external ferred embodiment of the invention, housing in assembled position. Figure 2 is a similar view of the exterior cas Another object is the provision of a combined 25 ing, taken on line II-II of Figure 3, gear case and measuring chamber. Figure 3 is a bottom view of Figure 2, Another object is the provision of a combined Figure 4 is an end view of Figure 2 looking key and diaphragm to hold the measuring cham toward the right with part of the casing in sec ber in position. Another object is to construct the measuring Figure 5 is a plan view of the gear case, 30 chamber so as to facilitate its manufacture. Figure 6 isa plan view of the measuring cham. In accordance with the present invention, I ber, Y ‘ provide an oscillating disk meter having a slot Figure ’7 is a plan View of the bottom half of in the housing adjacent to and parallel to the the measuring chamber, . division plate, and a guide roller extends from Figure 8 is a vertical sectional view of the the oscillating dislr` into the slot to guide the disk. measuring chamber‘and. assembled gear housing, The meter chamber is provided with double inlet the gears being removed, openings which open into the interior of the Figure 9 is an end view of Figure 8 looking to meter chamber from the top and bottom thereof ward the right, and thus reduce the pressure absorption of the Figure 10 is a side elevation of the measuring meter. The inlet openings are located in the'top tion, and bottom walls on >one side of the division disk, ~ i . ` Figure 11 is a plan View of the measuring disk, plate or diaphragm, and outlet depressions are Figure 12 is a vertical sectional view of a por formed in the top and bottom walls which merge tion of the outer housing, and in the meter chamber on the other‘side of the di vision plate, an outlet passage being in communi 45 VFigure 13 is a side elevation of the division» plate. cation therewith and sealed ofi from the annular Referring to the drawings (Figures 1 to 4), inlet chamber. I prefer to provide shields for there is shown the external meter casing or theA inlet openings to prevent currents inthe housing I having a threaded inlet connection 2 measuring compartments acting on. the disk. The measuring chamber is positioned in the eX 50 and a threaded outlet connection 3. The interior ` of the housing has three bosses 5, Stand ‘I which teri‘or housing by internal shoulders or stops arermachined to provide shoulders oristop sur which provide an annular space between the faces 8,’S and Iû in a common plane. , At the measuring chamber and housing walls communi bottomof the casing there is provided a ñange I2, eating with the inlet openings, and cri-‘operating the inner edge I3 o_f which is machined on acir sealing surfaces on the housing and measuring cle on its interior slightly larger than the circle chamber surrounding the outlet separate the formed by walls I4, I5 and I6 of bosses 5, 6 and 1. outlet from the inlet, thus compelling the fluid The measuring chamber 35 (Figures 1, 6, 8 and to be measured to pass through the measuring 9) comprises a lower portion 36 and an. upper chamber. The bottom plate is held aga-instfthe measuring chamber by pressure releasable means (it) portion 31, said upper portion having projecting 3 2,406,877 lugs 38, 39 and 40 which are machined on the top surfaces 4|, 42 and 43 to engage the shoulders 8, 9 and l0 of bosses 5, 6 and 1. The outer sur faces 44, 45 and 46 of the bosses or lugs 38, 39 4 other and terminate short of contact to provide a space therebetween adapted to accommodate piston web |05 as illustrated in Figure 8. The dividing web of the disk is cut out at |09 and 40 constitute machined ribs which engage in known manner to accommodate a division the surfaces I4, I5 and I6 of bosses 5, 6 and 1, plate or diaphragm III (Figure 13), and a de and thus position the upper portion 31 of the pending headed pin I I0 secured in the wall of the meter chamber in the outer housing I. piston carries a guide roller | I0' cooperating with The reduction gear housing or cover 50 (Figure a slot III’ in the meter chamber. The guide 5) has projecting arms 5|, 52 and 53 which are 10 roller and slot eliminate sliding frictional en machined at their extremities 54, 55 and 56 on gagement between the piston andv division plate a circle and thus provide flange means on cover 50. The upper surface of the top portion 31 (Figure 6) of the meter chamber has a generally I and reduce noise in the operation of the meter. This guide roller and slot may be located on either side of the division plate. annular rib 58 which is machined on its top sur 15 The bottom and top walls of the meter cham face 59 to provide a seat for the lower machined ber are slotted at I I2 and |I3 (Figures 9, 6 and face 6| of the reduction gear housing 50. The 7) adjacent the outlet opening ||1 to accommo lugs 38, 39 and 40 (Figures 6 and 9) are rabbetted date the tabs | I5 and | |6 of the division plate, to provide horizontal faces or shoulders 63, 64 which lies against the machined wall | I4 between and 65 preferably in the same plane as top sur 20 the bottom wall || 8 and top wall ||9 of the me face 59, and arcuate Vertical surfaces 66, 61 and ter chamber. The slots ||2 and ||3 preferably 68. The extremities of arms 5|, 52 and 53 of the are formed between one side wall ||4 of outlet gear case are received in the rabbetted portions opening ||1 and bosses ||2’ and |I3’, as shown of lugs 38. 39 and 40 respectively, and the sur in Figure 9, extending into the outlet opening. faces 66, 61 and 68 engaging ends 54, 55 and 56 It will, therefore, be understood, from reference position the gear case in the housing. A dowel to Figure 9, that the division plate I I I forms one 69 in the lug 39 co-operating with a hole 1| side wall of the outlet port or opening |I1, ex in arm 52 insures proper positioning of the gear tending vertically between the bottom wall IIS case. The upper surfaces 12, 13 and 14 of arms of the chamber section 36 and the top wall ||9 5I, 52 and 53 are machined flush with the tops 30 of chamber section 31. At its inner end the of lugs` 38, 39 and 40. plate | || carries a middle cylindrical portion |2| The lower portion 36 (Figures 1, 7 and 8) of preferably integrally cast therewith, which is the meter chamber is rabbetted internally at 16 adapted to lie between the machined ribs 96 and and receives a rib 11 onthe upper portion to |0I. This thickened portion I2| has a hole |22 position the two sections in assembled relation. therein, and a pin |23 extending through the hole The bottom section has lugs 18, 19 and 8|) which |22 and into hole |24 in the rib 96 holds the are machined on a circle on their outer surfaces division plate against displacement with its edge 8|, 82 and 83 to be received by the edge I3 of |26 in engagement with the vertical outer sur flange I2, and the ends84, 85 and 86 of the lugs faces of the ribs 96 and |0I. Pin |23 may be ex lie ñush with the bottom surface 81 (Figures 1, 40 tended into a similar hole in rib | 9|. ' 2 and 3) _of the ñange I2 in assembled position. If desired, a slot |28 may be provided in rib A gasket or washer 88 is located on the surface 81 |21 of the outer casing I to receive the project of flange I2. The suitably lined bottom plate ing end of the divisionplate to brace the same or cover of frangible material, such as cast iron, and to insure proper positioning of the meter has a machined surface 89 adapted to engage the 45 chamber in the casing. washer 88 and bolts 9| passing through the slot It will be apparent that by reason of the bosses ted lugs 92 and 93 of the bottom plate and hous 5, 6 and 1 extending from the Walls of the casing ing respectively releasably clamp the gear case there is provided an annular space between the and two meter chamber sections in the housing casing I and the measuring chamber 35, which I. With this construction, in the event the in 50 space, however, is sealed off from the outlet pas terior liquid in the meter freezes, one or more of sage |28’ and outlet opening |I1 by the ma the lugs 92 of the cast iron bottom cover will chined surfaces I6, |21, I3 and |3| on the inte break off, thus relieving the force holding the gear rior of the casing | surrounding the outlet pas case and meter chamber sections assembled, and sage |28’ and engaging complementary sealing the expansion of the ice will merely force these 55 surfaces 46, |32, |33 and |34 respectively on the apart without breakage. By dividing the meter ing chamber substantially at its middle, the man ufacture of the chamber is facilitated. The lower half of the measuring chamber (Fig- exterior of the measuring chamber 35. Thus, the measuring chamber is substantially entirely surrounded by fluid. The bottom wall II8 and top wall || 9 of the measuring chamber have in ure '7) of the meter has a cylindrical wall 95 and 60 let openings |36 and |31 respectively of suitable an inner concentric wall or rib 96 with a well 91 shape, whereby fluid to be measured may enter formed within the rib 96 and having at its cen the measuring chamber. The inlets |36 and |31 ter a stub or spindle 98. >A roller 99 (Figures 1 are shielded by shields |40 and |4| partially clos and 8) preferably is journalled on the shaft 98. The upper half of the measuring chamber simi larly has a cylindrical wall 95 (Figures 1 and 8) which in assembled position is a continuation of the wall of the lower chamber, and a concentric wall or rib |0| with a well |02 within the rib. Within the cylindrical wall 95 is located a cylin drical piston |04 (Figure 10) having a middle Web |05 which may be perforate and which has a central re~enforcing pin |96 passing through the piston stem |01 and |08 and riveted at its ends. Walls 96 and |0| extend toward eaßh ing the inlets and which may be cast integral with the meter chamber, and serve to prevent lateral currents acting on the disk. Upraised shields |40 and |4| are closed on the incoming ñuid side and extend above and partially over the two inlet ports in such manner as to prevent incoming fluid ñow currents from directly im pacting piston |04. This results in an improve ment in accuracy, particularly at high rates of flow. The bottom portion of the measuring chamber has an outlet recess or depression |38 and there is a similar outlet recess or depression i 12,406,817 «|39 `in the .top wall which depressionsrmerg-e .at the outlet openingï|`| 1 to provide a combined ‘out let ‘for fluid from the .measuring chamber. The upper shell lof the measuring 4char-uber has a boss |4|’ Within the area defined by'r'ib .5S which .re ceives bushings |42 »of hard rubber, graphite, or other suitable `material .and has a shaft |153 ex tending therethrough with -a driven dog .Ill?'ïin the central‘well |102. A-pinîion 1|14f5‘is suitablyse Acur-ed to the opposite lend of shaft |43, for example, by :a pressed fit. `The upper shell .also has bosses |46, |41 and ¿|48 in which are located har-d rubber bushings .and in which are Vjournalled one end of the _shafts of suitable reduction gears, in .dicated generally by the numeral .Il-til. 'The top Wall |5.| of the gear Yhousing '50 similar in ternal bosses |52 Yfor iournallin-g the opposite ends of the reduction gear shafts. ‘In the >central boss |55 is -J'ourna/lled a spindle |56 having the :linal a part on the outer fend of said 'plate Aseated in `>a slot in said outer_wall and positioning said »divi Vsion plate to Vform .one Wall of the outlet port, a pin extending into said enlarged portion and into at least one section of said intermediate Walls, `and a cylindrical piston having a »dividing membrane therein received ¿between 4said inter mediate Walls, said _piston and membrane ïbeing “cut .away to accommodate `said `division plate. "4. ’In an oscillating piston meter, an outer housing, alcyllindrical measuring „chamber in said housing 4and having an outlet opening therein and 'having an intermediate cylindrical wall, `a 4separati-1: division plate `extending from the inter 'is mediate wa‘ll through said opening and yconstitut ing one wall of the outlet opening therein, means `extending into said opening »to provide a slot accommodating the -division plate, a slot in the outer housing to accommodate the projecting end gear |51 »on the inner end thereof, and a driving .2.0 of said division plate, and means to secure said division plate 'to said intermediate wall. crank or dog .|58 on the outer .end which eng-ages »5. In'an oscillating piston meter, a generally theregister drive dog 16,0. Cover or housing 5i? cylindrical measuring chamber having top fand is packed witha suitable :grease upon assembly. bottom Walls, a ~cylindrical outer Wall lhaving a rI‘he lower portion |6| (Figur-e123 of the `regis substantially radial opening therethrough, .and ter case is received on the shoulder |62 Aofthe an intermediate cylindrical wall, a metering lele casing -I and the flange ‘|63 lis spun over von the ment in said chamber, a division plate extending sloping flange |64 of the register case to hold it from the intermediate wall through Ysaid radial asserribled.V A shoulder -.Hifi „receives the bottom opening `to form one wall thereof, inlet openings plate of the register and the top portion ~«|66 pro in the top and bottom walls >of the measuring 3.0 vided with a‘suitable lid is secured to the bottom chamber on one side of said division plate, :de portion by screws passing through suitably aper pressions in the V.top and bottom Walls on the op tured lugs inthe topand V.bottom portions. v'What I claim ’as my invention and desire to se cure byLetters Patent is: ` ` ` ` posite side of said divisi-on plate merging into the radial opening inthe measuring chamber, .an outer casing, means locating said meter cham 1, In an oscillating piston meter, a measuring ber Within the outer casing in spaced `relation chamber providing top and bottom Walls and a thereto to provide an annular inlet chamber cylindrical wall with a substantially radial outlet communicating with »the inlet openings, an inlet Vopening therethrough, a metering element >in said connection in the outer casing communicating chamber- outlet depressions in the top and bot with said annular chamber, cooperating >sealing tom Walls of said measuring lchamber merging 40 surfaces on the outer casing and measuring into said radial opening, an outer casing, `means chamber sealing the radial opening from .said locating said meter chamber Within the Áouter annular inlet chamber, and outlet connection casing in spaced relation thereto to provide an in the outer casing communicating with said annular inlet chamber, 'an inlet -connection in radial opening. the outer casing communicating `with said annu- ' 16. In an oscillating piston meter, a measuring lar chamber,_inleït openings in the ltop and `bot chamber providing top and bottom Walls and ra tom Walls of said measuring chamber, co-oper cylindrical Wall with a substantially radial Aopen ating 'means on the outer «casing and‘measuri-ng ing therethrough surrounded by smooth-integral chamber sealing the radial opening from said sealing surfaces on said cylindrical wall, a meter annular inlet chamber, and an outlet connection ing element in l‘said chamber, outlet depressions in the -outer casing communicating directly with in the top and 'bottom vva'lls of said measuring said radial opening. ` chamber `merging into said radial opening, inlet 2. In an oscillating piston meter, an outer openings in the top and bottom Walls -of said housing lopen at the bottom and closed at the measuring chamber, an outer `casing having an top, a register driving spindle journalled in l'said outlet connection surrounded by smooth integral top, a measuring chamber, a gear case loos-ely ‘as sealing surfaces, cooperating projecting means sembled to said measuring chamber and posi on the outer casing and measuring chamber lo tioned thereby, reduction gearing in said gear eating said measuring chamber within Athe outer case 'journ'alled in the top Wall thereof and‘in'th'e casing in spaced relation thereto and in sealing top wall of the measuring> chamber, means AeX 60 engagement >adjacent the outlet opening, ìand tending through the gear casing> to drivefsaid providing an annular inlet chamber, and an in register spindle, projecting stops ink ‘said outer let Aconnection in the outer casing Vcommunicating housing serving as abutments for the gear case with »said annular chamber. and measuring chamber, 'and a ‘bottom >cover for 7.,'In an oscillating -piston meter, an out-er said housing `releasa-bly holding said gear case Cf.. Ui yhousing open at 'the bottom and closed at the and measuring chamber in position. top, _a 'measuring chamber having ‘lugs thereon, ‘3. 'In an oscillating .piston meter, a measuring a. gear case adapted to be loosely assembled to chamber 'having an inlet port andan outlet ,port said measuring chamber and having arms posi lcomiiirising two half sections to provide a cylin »tioned by said lugs, reduction gearing in said drical ‘measuring chamber having an intermedi case journalled in the top Wall of said measuring ate cylindrical Wall in `each half section, a sepa chamber and of said gear case, projecting stops rate and removable division plate extending from in said outer housing serving as abutments for the outer Wall of said chamber to the intermedi the gear case and measuring chamber lugs, ate walls and having at its inner end an enlarged portion received between said intermediate walls, 75 means centering said gear case and measuring 7 2,406,877 chamber in spaced relation to the housing, and a bottom cover for said housing releasably retain ing said gear case and measuring chamber in operative position. 8. In an oscillating piston meter, a casing, a measuring chamber in said casing providing top and bottom walls and a cylindrical wall with a 8 in the path of incoming ñuid flow, and a cylin drical piston received between said intermediate walls, said shield means preventing lateral cur rents in the incoming fluid from impacting di rectly on said piston. 12. In an oscillating piston meter, an outer housing open at the bottom and providing in ternal shoulders, a measuring chamber in abut substantially radial outlet opening therethrough, intermediate cylindrical walls extending from relation to said shoulders, a gear case adapt the top and bottom walls, said -top and bottom 10 ting ed to be loosely assembled to said measuring walls being formed with ñuid inlet openings, out chamber, flange means on said case interposed let depressions in the top and bottom walls of between the measuring chamber and said shoul said measuring chamber merging into said radial ders, reduction gearing in said case journalled in opening, a cylindrical piston having a dividing said measuring chamber and gear case, means membrane received between said intermediate for centering said gear case and measuring walls, and shield means disposed in the path of chamber in said housing, and a bottom cover for vincoming ñuid ñow and extending partly over said housing releasably retaining said gear case said inlet openings for preventing direct impact and measuring chamber in operative position. on said piston of fluid entering said casing. 13. In an oscillating piston meter, a meter cas 9. In an oscillating piston meter, an outer 20 ing having fluid inlet and outlet connections, housing open at the bottom and closed at the top, means for mounting a register on one end of said a register driving spindle journalled in said top, casing, the other end of the casing being formed a measuring chamber comprising two separable with an aperture, means providing internal seat half sections to provide a cylindrical measuring means within said casing facing said aperture, chamber having an intermediate cylindrical wall a measuring chamber housing within said casing in each half section, a gear case loosely assem having fluid connection with said inlet and out bled to said measuring chamber and positioned let connections, means for mounting register thereby, reduction gearing in said gear case jour drive mechanism upon the end wall of said hous nalled in the top wall thereof and in the topV wall opposite said aperture and outside said cham of the measuring chamber, means extending 30 ing ber, a cover for said drive mechanism seated on through the gear case to releasably engage and said housing, seating means on said housing and drive said register spindle, projecting stops in cover adapted to ñtwith said internal seat means said outer housing serving as abutments for the on the meter casing, and a removable cover for gear case and measuring chamber, a bottom said aperture formed to hold said housing and cover for said housing engaging said measuring register drive mechanism cover against said in chamber, and irangible means securing said ternal seat means. cover to said housing. 14. In the meter deñned in claim 13, cooper 10. In an oscillating piston meter, an outer ating peripheral seating means within said meter housing open at the bottom and closed at the top, a register driving spindle journalled in said top, 40 casing and on said housing for positioning said register drive mechanism in proper alignment to a measuring chamber comprising two separable drive said register. half sections to provide a cylindrical measuring 15. In an oscillating piston meter, a housing chamber having an intermediate cylindrical wall defining a measuring chamber, external bearing in each half section, said housing and chamber providing cooperative seating surfaces in sliding 45 seats on the upper wall of said housing, a regis ter drive gear train having substantially vertical contact to center said measuring chamber, a shafts mounted on said bearing seats and includ separate division plate releasably engaging said ing a drive spindle projecting within said cham half sections and extending from the outer wall ber, a cover for said gear train provided with to the intermediate walls and having an enlarged bearings for said shafts, and cooperating seating portion received between said intermediate walls, and positioning means on said cover and the a gear case loosely assembled to said measuring upper Wall of said chamber for properly locating chamber and positioned thereby, reduction gear said cover, said gear train being held in operative ing in said gear case journalled in the top wall assembly by said proper positioning of said cover. thereof and in the top wall of the measuring 16. In an oscillating piston meter, a meter chamber, means extending through the gear casing having fluid inlet and outlet connections, case to releasably engage and drive said register a housing within said casing defining a measur spindle, projecting stops in said outer housing ing chamber, said casing having an inlet fluid receiving space extending partly about said chamber, a relatively light piston os housing engaging said measuring chamber, and 60 measuring cillatable within said chamber, an inlet opening frangible means securing said cover to said serving as abutments for the gear case and measuring chamber, a bottom cover for said housing. 11. In an oscillating piston meter, a measuring chamber providing top and bottom walls and a cylindrical wall with a substantially radial open through an end wall of said housing providing for ingress of fluid directly from said space into said chamber to actuate said piston, and shield means on said wall partially extending over said inlet opening for preventing direct impact of in ing therethrough, intermediate cylindrical walls let fluid current now on said piston. extending from the top and bottom walls, outlet 17. The meter deñned in claim 16, wherein depressions in the top and bottom walls of said said shield means comprises an integral exten measuring chamber merging into said radial sion of said housing at said inlet opening pre opening, said chamber having inlet openings in 70 senting a closed side facing said inlet ñuid flow. f the top and bottom walls thereof, protectiveA shield means extending -over said inlet openings ALEXANDER R. WHITTAKER.