US1103384A

US1103384A - Meter.

Info

Publication number: US1103384A
Application number: US61912111A
Authority: US
Inventors: Charles Havelock Taylor
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-04-05
Filing date: 1911-04-05
Publication date: 1914-07-14
Anticipated expiration: 1931-07-14

Description

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C. H. TAYLOR.

METER.

APPLICATION FILED APR. 6, 1911. l, l @S Patented July 14, 1914.

3 SHEETS-SHEET 2.

Fig-3 G5 v el eee x l I I l TAYLOR.

METER.

APPLICATION HLED APR. 5, 1911,

191035384, Patented July 14, 1914. i 3 SHEETS-SHEET 3.

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CHARLES HAVE-1.00K. rAYLoR, or MoN'rREAL, QUEBEC, CANADA.

METER.

incassa.

Specification of Letters Patent.

Patented July i4, 1914.

Application le Aprile 5, 19111. Serial 150.619,121.

To all whom it may concern:

Be it known that l, CHARLES Havnnocn` TAYLOR, residing at Montreal, in the Province of Quebec, Dominion of Canada,- have invented certain new and useful Improvements in Meters, of which. the following is a specification. y

My invention relates particularly to fluid meters, and has for its object to provide a meter of this type having an operative member actuated by the fluid being measured and possessing capacity for the' maximum How to be measured and automatically varying with the How, the function 'of this member being to operate recording and indicating mechanisms. y

The invention may be-said to consist of the construction andsevera'l combinations and particular arrangement of parts herea inafter described and .pointed out in the claims. I v

For full comprehension however of my invention reference must be had to the accompanying drawings in which similar reference characters indicate the same parts and wherein;

Figure l is a vertical sectional view of the meter case with the operating parts partly in elevation and partly in vertical sectional View; Fig. 2 is a horizontal sectional view on line A. A. Fig. l; Figs. 3 and 4 are horizontal sectional views taken on lines B. B. and C. C. respectively; Fig. 5 is a detail vertical sectional view through a nozzle of the fluid motor and a part of the motor; Fig. Gis-an enlarged detail sectional view of a portion of the moto-r; Fig. 7 is a detail plan view of a dash-pot; Fig. 8 is an elevation of the part illustrated in Fig. 7 Fig. '9 is a diametricalsectional view-of the governor; Fig. l0 is a detail view of apart of the governor; Fig. 1l isa horizontal sectional view online D. D. Fig. ll looking down with thepiston in its lowerniost position; Fig.- l2 is a' detail horizontal sectional rview of va part of the governor ;k and'FigLtl is an axial sectional view ofthe u per end of the piston-rod and the lower en ofthein'- dica-tor case, shown in elevation in Fig. `1.

The present embodiment of my invention provides for theQpaSSage of the mainbody of theluid to be'measured through a' casing 2 divided, by a cylindrical wall 20` intoj fluid-receivngfl and supplying ducts and circular smh-'which is commensurate -with i i respectively; the top or cover of this casin'g having a shallow circular chamber 6 formed therein; and a piston 7 within the cyhndrical chamber 2O having its rod 8 projecting upwardly through and slidablein the' cover.` .The cylindrical wall 20 is `termed with holes 2l eecting a communiv cation between the ducts 3 and e and `arranged in a spiral series and increasing progressively in area from the lower to the upper end of the series. The aggregate is a flow, a constant pressure within the duct?)Y greater than that in the duct 4 and this difference in pressure is utilized to provide the power to impart a constant movenient to a member adapted to actuate the registering mechanism and variable autofniatically with the How. This member, in-

dicated at 30, is carried at the upper end of the piston rod 8, and it is of cylindrical form 'with its perimeter provided with gear teeth` `31 of saw-tooth form and disposed parallel to the axis, the upper edge 32 of the cylinder being of helical form and the lower edge 33 circular and at right angles to the axis, the resultant surface progressively decreasing in effect-ive area from the the maximum flow, to the helical end terminating in a point bearing'one tooth only.

Rotary movement is imparted to this member by the fluid being measured, through the medium of a turbine 50 driven by the iiuid in duct 3 under' the pressure due to the resistance offered by wall 20 and the weight of the piston and the parts sustained by the jlatter.v This operation 'is eiiected by the following constructionzflhe lower end of the cylindrical wall 20 is vinteriorlv cham- 4bored as ato() and the continuity of the 'finnerside of the-wall is maintained by an annular wall-section 61 of wire gauze serv- .ing -as a strainerto prevent cloggingof the chamber. A pair of pipes-62 leads-from :this chamber to a pair of nozzles 63 preferably cast in a. circular cover 'platell se- ;cured, by screws 65 for instance, over theA `before mentioned vchamber *66 which has a .central exhaust port-67 communicating with v theduct 4; The turbine 50 is located in `this chamber and carried on the, lower end of a shaft 70, the nozzles being arranged `75 in forming with the buckets, pockets receiving the impacts of the jets and consequently obtaining maximum vefficiency therefrom. A hub 78 and web 79 rigidly connect these parts to the shaft. The upper portion of this shaft has ixed thereon an elongated'pinon 80 which intermeshes with a large gear 81 fixed upon the piston rod 8 near the upper end thereof. This arrangement provides a motive fluid by-pass from duct 3 to duct L through pipes 62, nozzles 63, the impact chambers between the buckets 76, the turbine chamber 66, exhaust port 67, to the duct 4; and the power developed is transmitted from the turbinev through its shaft elongated pinion 80 and gear wheel 81. to the piston rod 8, and consequently the cylindro-helical member 30 and the piston 7.

The cylindro-helical member imparts motion to the registering devices through the medium of a spur gear 100 having saw-teeth and held yieldingly in intermeshing relation with the saw-toothed surface of such member, while a pinion 102 rigidly connected to the gear 100 intermeshes with a vgear wheel 103 rigidly mounted on a shaft 105 from which rotarymovement is imparted to the registering devices. Before describing the connection between the shaft and these devices, however, I will vdescribe the manner in which the piston rod 8,*

shafts

70 and 105, and the portl wall 20 are mounted and the piston rod is-'vertically sustained, in this embodiment of my invention.

The port wall 20 rests on the top of a iixed cylindrical wall 200 within the lobular lower portion 201 of the casing an having a lateral extension 202 terminating in a flanged coupling port 203 affording a means for effecting a connection with the source of supply of the fluid to be measured, the whole constituting the intake duct 3. This lower end of the port wall and the top ofthe wall 200 are correspondingly gro'oved to receive a gasket 205, and the upper end of 20 is flanged as at 206 affording a means of connection vwith the underside of a floorplate 210 in which the' turbine chamber'l 66 and port 67 before mentioned, are formed. The pistonl rodv also passes through this Hoor plate and the opening to accommodate it has litted therein an elongated sleeve 212 with its lower end reduced slightly in diameter and protruding throu the floorplate, a collar 213 formed on t e sleeve and embedded in the upper face of the oor -cal port-wall 20 is facilitated and leakage therebetween is prevented, by a flat packing ring 216 rotatably mounted upon the underside of the piston and extending slightly beyond the'periphery, the edge thereof being beveled;` it being retained loosely by the overlapping heads of a series of retaining screws; and in order to secure minimum leakage when the piston is in its lowermost position the portion ofthe wall above and contiguous to the annular chamber 60 is inwardly inclined.

The

pinions

100 and 102 are carried by a shaft 220 mounted in a bearing frame 221 hinged upon the shaft4 105 and yieldingly held in position with the pinion 100 intermeshing with theteeth of the member 30, or prepared to do so, by a bow spring 223 having its fixed end fastened to a dash pot 400 to be presently further alluded to, the movement of such frame'being arrested by a stop 225 also carried by the dash pot.

The shaft 7 0 is supported in a frame consisting of the turbine-chamber cover 64 having preferably cast in one therewith a standard 226 curved in cross-section and diminished toward its upper end which is made to extend horizontally to form a bearing 227 having the upper .end of the shaft 70 mounted therein, such-shaft being supported at a point above, but near, the cover plate 64:, in a bearing plate 275 forming a part of the governor, an essential part of this meter and hereinafterfully described.` This bearing plate is centrally chambered and contains a cup 228 of preferably hardened steel, or other suitable material for the purpose, serving as a raceway for a series of balls 229. Thethrust is transmitted from the shaft to these balls through a conical hub 230 sustaining a hub 219 forming a part of the governor, a set-screw 231 eifectingthe required connection between the hub 219 and shaft.

The yshaft 105 is supported in a frame 250 extending laterally from the dash pot 400 and presentin a pair of bearing yarms 251 252 carrying t e shaft, while the upper end :of the latter is braced by a stay 253 extending from the standard 226.

A dome 300, secured to the top of tlfe floor plate 210, covers all the mechanism above the latter, has holes 301, 302, in axial alinement with the piston rod 8 and shaft 105, and carries' the dial case 305 containing the usual planetary gear obtaining its power from shaft 105 througha shaft 306 protruding downwardly through the hole 301 packed as at 299, and a pair of

clutch blocks

307, 308 secured upon the contiguous ends of the respective shafts 105 and 306, the block 308 having a pair of clutch-pins 310 straddling the block 307 from which torque is transmitted through the pins, block 308, and shaft 306, from shaft 105 to the planetary gears and registering-dials.

An indicating device is provided from which the volume of fluid passing through the meter can at any time be ascertained at a glance, consisting of a tubular cap 350 having a glazed side 351 having graduations 352 with which coacts an indicator rod 353 set in the upper end of the piston rod 3; the joint between the

tubes

350 and 351 being packed by a packing 360 and a tubular plug361, a nut 362 serving as a stop to limit the upward movement of the piston rod. In order to permit the piston to rotate freely when its rod comes into Contact with the nut 362 as just mentioned, which is likely to occur in the event of the meter being overloaded, a cushion G02 and raceways C00 and 601 containing balls G03 are embedded in the upper side of the hub of gear-wheel 81. It may be noted that the indicator rod has perfectly free movement in the indicator tube.

The mechanism thus far described is suflieient for the operation of bot-h the registering and indicating devices of the meter, but correct readings of the registering dials cannot be obtained without constant speed of the turbine and consequently the fluctuable member 30. The governor before mentioned secures this constancy of operation and is specially designed and constructed to meet j purpose of preventing heavy eddies in the the requirements of po-werfulness and sensitiveness. l

This governor comprises the following elements: The bearing plate 275 before menis to permitthe dial-case and planetary gears tioned, having a central boss 500 through which itis secured rigidly to the cover plate (34, by screws 501 for instance, the periphery of the plate lhaving a circumferential flange 502 the circumferential surface of which and of the body of the plate present a smooth face. The hub 219, also before mentioned, having a pair of diametrically oppositely yextending arms 504i, 505 having their free ends 507 extending tangentially and of horizontal U-ferm, the end ofeach leg having a iiat spring 50S clamped in a diagonaly slit therein by screws 509, these springs carrying weighted brake-heads at their opposite ends and serving as fulcrunis therefor. Each brake-head consists of` a socket 510 for a brake-shoe`512 of Babbitt metal or the like and slit at its top and bottoni sides to receive the radially outer ends of the springs 503 which are clamped therein by screws 513; and the forward side ofthe head is increased in thickness 'to constitute-a weight 515. As greater uniformity of action is obtained by ycausing these brake shoes to act in unison they are yoked together by a rigid link 516; and in order to provide for a line adjustment 'a pair of adjustable helical springs 517 are made to resist the radial movement of the weights. A pair of

radial arms

518, 519 is clamped upon the shaft and between them and the weights the respective helical springs are connected, t-he end 520 of arm 519 serving as a thumb-piece to facilitate the adjustment of the arms from one angular position to another, the clamps being, of course, iirst loosened to permit of this action.

The purposeof the dash pot 400 is to prevent vertical vibration or chattering in relation to the proper movement of the piston and the parts carried thereby. It contains the cylindro-helical member 30, which has a trundle ring 410 similar to the ring 216 and for the purpose of facilitating the movement, both circumferentially and aX- ially, of the member, and during .the displacement thereof the fluid escaping through the interstices between the teeth of such member suffices to permit of its gentle movement. This clash pot is secured preferably as yat 425 rigidly upon the sleeve 212.

The purpose of the partition vor floor plate 210 is to prevent t-he motive fluid passing through the meter and carrying more or less foreign particles, from coming into contact with the main operating ports within thc dome and clogging them, ressure equalizing port 4- 50 being provided3 however to permit of the dome being flooded with a still body of the motive fluid.

The turbine is separately inclosed for the flowing motive fluid from disturbing the accuracy of its opeiation.

The purpose of the clutch-blocks 307, 303

to be lifted away from the main actuating part-s of the meter with the dome when it is desired to inspect the said main parts, and return the dome to position again, withy out the necessity of disorganizing the operating parts, the blocks being in operative rclation immediately thepins 310 straddle the block 307.

Operation: When no fluid is being drawn from duct 4 the pist-on will rest upon the contracted lower Vportion of the port wall 20 and with its edgein close proximity tobut beneath the lowest port of the helical series and consequently the port of smallest capacity. Under this condition the motive fluid will idly lill the duct 3, chamber 60,

pipes 62, the nozzles 63 the turbine chamber 6G, port 67, duct 41 and the cylindrical space above the piston Within the wall 20, and

there will consequently be uniformity of v pressure on both sides of the piston the weight thereof and of the parts carried thereby being sustained by the lower end of the wall 20. Immediately the smallest flow is started from the duct 4 a difference in pressure is set up between the

ducts

4 and 3 and a flow is started from duct 3 through the by-

pass

60, 62, 63, 6G and 67 to duct 4 and jets are projected, from the nozzles, and the turbine and consequently the piston commence to rotate. This rotary motion of the piston facilitates its upward movement, and it uncovers sufficient port-area to accommodate the flow, and as the flow increases or diminishes the fluctuations are followed to the most minute degree by the piston, and the movements up or down according to the amplification or diminution of the flow, and however small, are facilitated and the response of the meter accelerated, bythe rotary movement of the piston. The power developed inthe turbine depends upon the pressure it is necessary for themotive fluid in duct 3 to exert in lifting and sustaining the weight of the piston and that carried by it. This rotary motion is transmitted from the turbine to the piston through shaft pinion 8O gear wheel 81 and the piston rod 8.

The velocity of the turbine is maintained constantly by the governor the action of which is so cont-rolled that when the velocity reaches a predetermined degree adjusted by the springs 517, the resistance of these springs will bel overcome and the brake-shoes 512 bear upon the flange` 502, which constitutes a brake-ring, to an extent dependentupon the amount-of friction required to retard the shaft and keep the velocity within the necessary bounds to main. tainuniformity. This uniform rotation of the piston is transmitted through the pistonrod, the toothed s urface of the cylindrohelical member 30,

pinions

100 and 102, gear wheel 103, shaft 105,

clutch blocks

307, 308, shaft 306, to the planetary gears andthe dials.

The pinion 100 remains stationary, in so far as axial displacement is concerned, and when there is no How through the meter the upper end of the fluctuating member 30, bearing the single tooth, is slightly below the level ofthe pinion and is consequently free to rotatewithout touching the pinion, but its position is such that upon the commencement of the piston to rise and uncover the lowermost port, and the `motive fluid to flow, the helical end of the memberl 30 will simultaneously assume a position in engagement with the pinion; and as the` volume of flow increases and'this member rises the operative circumferential area of the latter and the extent of rotation of the pinion increase proportionately, and decrease when the volume decreases, the fluctuations in the flow being in this manner simultaneously transmitted to the registering dials, the accuracy of this registering action being insured by the uniformity of rotation of the turbine.

. What I claim is as follows 1. In a fluid meter 'having a passage therethrough the combination with a cylindrical port-wall dividing the passage, a piston within the said wall and controlling` the 'ports therein, an indicating device, and means operatively connecting the piston to the indicating device, of means for rotating the piston.

2. In a fluid meter having a passage therethrough the combination with a cylindrical port-wall dividing the passage, a piston within the said wall and controlling the ports therein, an indicating device, and means operatively connecting the pist-on to the indicating device, of means for rotating thepiston and a governor controlling the said last mentioned means.

8. In-a uid meter the combination with registering devices, of fluctuating means operatively connected to the registering devices, a piston operated by the fluctuations of fluid passing through the meter, means operatively connecting the piston to the fluctuatingV means, means for rotating the piston, and a governor controllingthe said piston rotating means.

4. In a fluid meter having a passage therethrough the combination with registering devices, a cylindrical port-wall dividing the passage, a piston within the said wall and rod carried by the piston, of a cylindre-helical member mounted upon the piston-rod,

rotary mechanism stationary relatively to its axial direction and effecting a rotative connection between the said cylindro-helical member and registering devices, and means for rotating the said member.

5. In a fluid meter having a passage therethrough the combination with the frame of the meter and registering devices, of a cylindrical port-wall dividing the passage through the meter and having an annular chamber near the lower end thereof, a fluid impact motor, a nozzle arranged to project a jet of motive fluid against the said motor, the frame of the meter having a duct and an exhaust port, the duct -leading from the said annular chamber to the nozzle, and the exhaust vport leading from the motor to the portion of the passageoutside of the portwall, a shaft carrying the said motor, a piston within the port-wall and controlling the ports therein; a piston rod carried by the piston, means rotatively connecting the said shaft to the piston rod, a governor operatively connected to the saidl shaft, and variable operative means in rotative relation with and controlled by the said piston-rod and rotatively connected to the said registering devices.

6. In a fluid meter having a passage therethrough the combination with the frame of the meter and an indicating device, of a cylindrical port-wall dividing the passage and having an annular chamber near the lower end thereof, a fluid impact motor, a nozzle arranged to project a jet ofl motive iiuid against the said motor, the frame of the meter having a duct and an exhaust port the duct leading from the said annular chamber to the nozzle, and the exhaust port leading from the motor to the portion'of the passage outside of the port-wall, a shaft carrying the said motor, a piston within the port wall and controlling the ports therein,

a piston rod carried by the piston, means rotatively connecting the said shaft to the piston rod, and an indicator carried by the piston rod and coacting with the -said indicating device. v

7. In a fluid meter the combination with registering devices, of a cylindro-helical member having axial saw-teeth, means whereby the said member -is fluctuated -axially in unison with the fiuctuation of the How, a saw-toothed pinion in engagement with the said member, and means operatively connecting the said pinion to the registering devices.

8. Ina fluid meter the combination with registeringl devices, of a cylindro-helical member aving axial saw-teeth, means whereby the said member is fluctuated axially in unison, ,with the fluctuation of the flow, ya saw-toothed pinion and -a spring yieldingly retaining the pinion in engagement with the said member and means operatively connecting the said pinion to the registering devices.

9. In a fluid meter the combinatlon with a hollow cylindrical member and a member rotatable within the same, of a trundle ring mounted rotatably upon the rotatable member and running freely upon the interior of the cylindrical member for the purpose of facilitating the movement of the rotatable `member and affording an effective packing between said rotatable member and the cylindrical member.

10. In a fluid meter the combination with registering` devices, of a dash pot, a cylindro-helical member within the dash pot, "a

trundle rin mounted rotatably upon theinner end o the member and runninY freely upon the interior of the dash pot or the purpose of facilitating the rotation; means whereby the said member is fluctuated axially in unison with the fluctuations ofthe fiow, and means operatively connecting the said member to the registering devices.-

11. In a fluid.v meter having a passage therethrough the combination with a cylindrical port-wall dividing the passage, a piston within the said wall and controlling the l.ports therein, an indicating device, and

' of a cylindrical port-wall dividing the passage and having an annular chamber near the lower end thereof, a fluid impact motor, l

a nozzle arranged to project a jet of motive fluid against the said motor, the frame of the meter having a duct and an exhaust port, the duct leading from the,l lsaid annular chamber to the nozzle and the exhaust port leading from the motor to the portion of the passage outside of the port-wall, a shaft carrying the said motor, a piston within the port-wall and controlling the ports therein; a piston rod carried by the piston; variable operative means in rotative relation with and controlled by the said piston-rod and rotatively connected to the said registering devices means rotatively connecting the said shaft to the piston rod, a governor operatively connected to the said shaft and comprising a member havinga cylindrical face, a hub mounted rigidly upon the said shaft and. having a pair of diametrically oppositely extending arms, -a pair of brake heads, fiat-springs supporting the brake heads upon the outer ends of the arms in bearing relation with the said cylindrical face, adjustable means yieldingly retaining the brake-heads against movement relatively to the cylindrical face, and means operatively connecting the brake-heads together to 'move in unison.

,f In testimony whereof I have signed my name to this specification in the presence of two witnesses.

f 7 CHARLES HAVELOGK TAYLOR.

Witnesses: a'

` R. B. HU'rormsoN, n l

E. R. Prrrs.