US2327962A - Pump drive - Google Patents

Description

Aug. 24, 1943. AF, B.- DRAKE 2,327,962

. PUMP DRIVE Filed oct. 1o, 1959 ATTORNEYS Patented Aug. 24, 1943 UNITED STATES @PATENT OFFICE rUMr DRIVE` Frank BabbittDrake, Berkeley. Calif., assignor to Johnson `Gear & ManufacturingjCo., Ltd., Berkeley, Calif., :av-,corporation of California Application October 10, 1939, Serial No. '298,786

s claims. (oi. isi-gs) This invention relates to a pump drive; and has for one of its objects a `right anglepump drive that includes novel means for' more efficiently lubricating the working parts. Another object is asimplied construction in a gear drive for pumpsfor enabling proper assembly of the parts with the desired accuracy with `greater efflciency than heretofore.` A still further object is improved power transmission means between a pump and motor constructed to reduce-the "wear in such means and to reduce heatinggrof the elements in such means, and togmore -efi'iciently transmit the power from the motor togtheipump. A still f urther object is a power transmission means of the above general character connecting between a motor and pump that` readily adapts itself to different conditions vencountered in installation with respect to differences in pumps and motors. Other objects and advantages will appear in the descriptionand drawing.

In the drawing, y Fig. 1 isa sectional View through aright angle pump drive incorporating the invention.r y Fig. 2`is a plan View of the-pump drive, show# ing the housing'more in detail. n f `A I In detail,y the housing for the working r'parts of the drive fcomprisesa Avertically extending, generally tubular main housing I formed `'with a flange 2 at its lower end for bolting toa door or foundation in the usual manner, and also formed with aV bottom 3. The sides of saidmain housing are slanted slightly inwardly from the base end toward the upper end, which"uppe`r end is closed by a horizontal top-4, preferably formed integrally with `the sides of the main housing l. The top 4 is i centrally apertured for sup-Y porting ball bearing cage'and balls 5 thereon, and a dome-shaped cap 6 extends over-the top @and upper end of the housing, secured to the housing by bolts l yadjacent the `edges of the Vdome and housing.

One of the sides of said housing isjformed with a relatively large opening, and extending outwardly from theedges of said opening is a coneshaped bearing support 8, lthe'base of' the cone being secured by bolts'to the main housing adjacent the edges of the opening'V and the -apex be` ing disposed outwardly of the sideof the housing substantially co-axial with the centrall horizontalaxis of'said opening.` Said-cone is'horizontally apertured at the apex-'for receiving va vertically disposed annular ball bearing cag'eSQwith ballstherein.` I A The side of fthehousing I` opposite'the cone 8 is formed with a sight-opening covered by 'a glass Il), which glass is removably secured to the housing wallat the edges of said latter openingby a frame I I in` which the glass is secured. A conventional gasket between the frame and housing seals the sight opening against any possible leakage of oil 'through said opening, while the glass is sealed' by any suitable means in the frame against leakage between the glass and frar'ne.`

The bottom 3 of the housing is centrally apertured to pass a verticalshaft I2 into said lionsing with Vits upper end 'extending through the central 'aperture in top 4. Said shaft I2 is disposed 'within a sleeve or hollow shaft I3, which hollow shaft is secured thereto for rotation thereL with by means `of a nut I4 threaded onto the uppermost end of said shaft, which nui; engages the upper end of a collar l5; Collar I5"is interiorly threaded at its lower end to engage exterior threads on the upper end of the hollow shaft I3, and said collar'is also secured to shaft I5 against rotation relative thereto Aby key I6. Spacecl below the lower end of collar YI5 is a bevel gear II,` through which the hollow sleeve i3 passes, and which gear'is supported on an upwardlyfaoing shoulder I8 formed by reducing the diameter of the upper end ofgs'aid` hollow shaft-to the point of said shoulder.

Between -gear Il and the lower end-of the colf lar I5 is'a tubular spacer sleeve`l9 surrounding the upperend of hollow-'shaft I3.v This spacer sleeve is of reduceddiarneter at its upper' end portion to t'the inner ring of the ball bearing cage 5;.1and to form a shoulder'on whichsaid inner ring is supported. The radially inwardly facing side of the central aperture in -top `V4' oi the housingv is likewise formed to provide an upwardly facing shoulder 20 for supporting the outer ring of cagev5. This spacer sleeve I9 may be formed at its lower end with a radially outwardlyprojecting flange, or the equivalent thereof in the form of an annular disk 2l may' be secured between the lower end of sleeve i3 and the -gear Il, as desired; This disk constitutes an `oil `flinger or distributor, as will later be described. I l

It` will be seen from the foregoing that the shaft I3 may be inserted Vvertically into the housing I through top `4, and with the bevel gear Il,A sleeve IELflinger 2I, collar I5 secured ,on said shaft by collar I5 and the keys I6, 22`, said latter key securing said gear on said hollow shaft. The cage 5 is next placed in proper position, after which a cap 23, having downwardly n directedysides and a -top apertured to rotatably pass "collar I5` is positioned over the Abearing 5 and the elements disposed inwardly thereof. The' lower edges of said sides engage upwardly directed circular flanges 24 formed around the central opening in said top 4, and are fastened together by conventional bolts 25 extending through the margins of said cap. which cap holds bearing and shaft I3 in place.

From the foregoing description it is obvious that theposition of gear I 'l with reference to the shaft I2'can'be very quickly and easily positioned at the desired level within the housing by varyingy the thickness of spacer or flinger 2 The cone 8, at its larger end, is formed with' a shoulder 26 that is adapted to fit against the outwardly facing sides of the lhousing around the laterally directed opening therein, said opening being already described. A gasket 4may ofcourse be interposed between the shoulder and edgesjof web, the said ring being at the smaller' diameter end rof the weband the larger diameter e-nd being integrally connected with the larger diameter end of cone 8. This web supportsringg23 in position extending inwardly ofthe larger diameter end of thecone 8and ring 29 is interiorly `machined to receive the outerA ring of a ballbearing cage and balls 3U. The said web is also formed` with an annular row of relatively large openings- 3l therein.

Extending through the aperturedsmaller end of cone 8 and to a point adjacent the hollow shaft I3, is a horizontal shaft 32. This shaft carries at its inner end adjacent shaft I3 a ybevel gear 33, which gear is keyed to said shaft 32, the bearing cage` 305being adjacent the .side-of the-gearfacing the outer end of saidrshaft with its inner -ring engaging betweensaid gear and a sleeve A34 that is disposed between/saidinner vring and the inner ring of Athe ball cage 9, which `latter, bearing, ro- Itatably supplies the shaft -in ythe smaller diameter end of-cone 3.- y A Y Y The teeth of gear 33 are `adapted tomesh with the teeth of gear Il, and to insureproper-meshing of said gears, a washer 3,5 of the -desired thickness is positioned betweenl the outer `race of ballbearing and a shoulder 33 formed on-ring 23. Thus lthe accurate positioning of gears I;`I and 33 is procured in a simple manner, and once the correct meshing-of the gears is made, no further adjustment is necessary. y f L .t

On the outer end of shaft 32, Vand adjacent bearing 9, thesaid shaft is exteriorly threaded for a `lock nut 37, anda conventional oilfseal239 seals the smaller diameterend of cone 8 and shaft 32. Nut 3l is conventional, with 5. A. E. lock Was'henasindicated. i Y

The shaft 32 projects outwardly of said smaller end c-f cone B, andcarries apulley 4B, which pulley extends over Vthe diverging Asides of said cone 8 with the central plane thereof extending substantially centrally through bearingv, thus placing the line of 'force about over said bearing when thepulley -is driven by a belt from alsource of power, such as afmotor (not-shown). ,Y

' `The shaft 32 is'thel drive shaft and shaft I2 is the driven shaft, which latter shaft extends `o`lownwardlyV from the'bottom of thehousing for vdriving thepump.l t

Secured onthe'lower end of the tubular shaft l 3 is a worm pump orpump runnerll I, said pump Ashaft I3, is a ball bearing 44 that rotatably Vmounts and centers the lower end of shaft I3 with respect to said flange. f

'I'he fiange 43 is formed at its lower end, and above bottom 3, with a passageway 4 5 that communicates between the interior of the housing 'above'said bottom 3 and the lower end of the pumpy runner 4I at a lateral side of said runner. The open end of the passageway 45 is positioned so that the threads at the lower end of said runner willscant said open end upon rotation -of the runner 4I,`and a second passageway 46 in flange 43 similarly communicates atitsinner end withthe uppermost groove between the threads on said runner 4I,v which threads terminategshort of the upper end of e keyed t0 shaft I 3 by key 47, so that runner 4 I Will rotate with said shaft I3. In the opposite outervr open end of passageway 46, is securedone end of a pipe 48 that extends vertically upwardly into the lower open end of a Vertical passageway 49 that extends through the top4 of the housing. Thus upon the `lowerl being illedto .point 5G through a filler openingfSI upon rotation of the shaft I3, the oilwill-be Y forced upwardlyby threads "42 from passageway 45 into thepassageway 46 and pipe 48 for discharge finto rthe space 52 overbearing 5 enclosed by cap 23. The oil in-said space thenv passes through bearing', lubricating the same, and onto the oil flinger disk 2| which will cause the oil to be thrown laterally against the glass I'Uwand also nthrough openings `3I `to the fbearing 91 for lubricating the latter. This oil will then flow back into the pumpf'at-the bottom ofthe housing for being re-circulated. An operator by observing the glass I0 'can readily determine whether or not the oil is being properly circulated for lubri.-

cating'the bearings and other parts in saidA housmg.

A second passageway '53 in flange A43 at about the same level as .passageway 46 communicates with'pipe 54, whichrlatter pipe extends upwardly and terminates in an upper open end directed generally toward the juncture of the I-teethfof gear I1 with the teethof gear 3,3. v'Il'huswhen the pump runner 4I his rin operation, oil will be pumped through pipe 54 for ydischarge against gears I1, 33 for `properly* lubricating .thel same, and :this oil will drain back into the oil sump. e Surrounding the shaft I2 where the, flatter passes into the lowerend of shaft I-3 is a n ovel oil seal, which comprises a sleeve, -or 4oil seal tube 55 lsurrounding said shaft., I2., yand spaced therefrom.A This tube -55 Iis secured Aat its lower` Aend in a `central `opening in a `closure plate 56, thesaid plate being secured fat its margins to the marginsl -of the central opening in fbottom 3.v The inside of :the -lower' end of shaft I3 is enlarged toreceivefsaid tube with the tubespaced from inner ysides of said lower end. The-central bore'ofrunnerfI at its lower end is recessed at 58 land in said `recess vis an S. A. EJLStandard locknut'and washer Yassembly -59 'secured to the lower endt of 'shaft 13,

flange 43. The runner 4I is portion of the housing Iv the washer inthe assembly beingfdisposed be- -tween'the nut rand the runner. .Since Y.the `oil level inthe sump in the bottom of the `housing I is at a level below the upperendof the oilV seal Vtube `55, thezoil will netpass out-of the sump -6 is'formed exteriorly with ribs 60 in planes extending radially 'from its central verticali axis and the cone' is'exteriorly formed with ribs .6I in planesextending radially from its central horizontal axis. 'The ribs60 and the ribs 6I function to dissipate the heat developed? withinrthe housing. s l

In operation, when the 'drive shaft 32 is-driven by any suitable connection between the shaft and motor (motor not shown) the shafts I2, I3 will also be -rotated and the main pump below Vthe housing, and connected with shaft I2, will Vbe actuated.A At the same time the oil runner 4I will forcibly pump oil from the sump. in the bottom ofthe housing to the bearing 5; the flinger disk 2I functioning to insure distribution of the oil to bearings 9, 30, and at thesame time throwing the oil on sight glass IB to enable theoperator to determine whether the oil is being properly distributed. The pump runner 4I also pumps oil through the conduit A5l! directly Ito gears I'I, 33 some of which oilwill-fall to bearf ings 44 for lubricating the same. `Apart from this lubricating system, the provision for quicklyand accurately adjusting'the gears I'l, 33 to mesh properly as by changing the length of spacer sleeveIS or-tl'ie` thickness yof flinger 2|, and by changing 'the thickness; of washer 35`is an important feature. YLiliewise, the oilV seal assembly, including tube 55, 'and theV positioning of pulley 40 centrally overbearing 9, and the sight glass, and alsothe cooling iins or ribs on the dome and cone, are material improvements in pump drives of this character.

Where it is desired'to Adrive-the shafts 4I2, I3 in a direction opposite tje ine drive estabiisned by'placinggear I'I above Ygear 33,*provis1on is made foi" placing'the gear I1 below said gear -33 and'keying the gear I1 to shaft I3 as indicated in dotted linev at 62, in which case aspacer .sleeve indicated in dotted line at 63may`be substituted for the gear I1'between shoulder I8` and flinger 2l. Needlessjto say, flinger 2| maybe formed integrally with collar IB, if desired` y It is further obvious that incertain installations the shaft 32 may be directly connected. to aimotor or to a conventional gear transmission means, thus eliminating the pulley. v l Insofar as the pump runner M is concerned, in addition to being a'positive and extremely simple oil pump in 'a right angle drive, as disclosed, it is manifest that by merely changing the number` and pitch of the threads, any desired can be reduced. oghe headpshaft I2 maybe raised 'and' lowered tothe desired position merely by adJusting nut I4, which latter nut is locked by alock bar, as indicated, against turningg l I Having described my invention, I claim:

1. In av right angle pump drive', including a housing having side walls, atop wall, and a bottom. wall, a horizontal drive shaft rotatably extending through said sidefwalls at "a point therein, fa, main shari; 'rotatamy extending through. said bottom wall and into said housing, a vertical ,hollow shaft withiny said housing'into whichthe portion of the main shaft within said housing extends, means adjustably securing said main shaft and saidhollow shaft together for rotation 'as a1unit,vintermeshing gears, respectively, securedon said hollow shaft and said drive shaft `for providinga driving connection within said housing between said drive shaft and said hollow shaft, the lower end. of said hollow shaft terminating abovesaid bottom wall and'adjacent thereto, a vertically extending screw Vdisposed coaxially withtheaxis of said hollow shaft and secured in position around the lower endthereof, a chamber rigid with said housing having cylindrical inner sides slidably engaging the peripheral surfaces of the screw thread for 'rotation of the screw withinsaid chamber, the walls of said chamber being ported atvertically spaced points adjacent the upper and lower ends of said thread, said housing communicating with the lower port and a conduit communicating between the upper port and the said gears for conducting oil forced along said screw thread to said gears upon rotation of said screw, said bottom `being adapted to support an oil supply with said chamber disposed therein, and anoil seal for preventing oil from leaking `from-said supply past said vertical shaft `at the point where said main shaft passes through the bottom wall, said seal including a vertically disposed tube secured to said bottom wall and disposed around said main shaft and between said main` shaft and saidhollow shaft,` the upper end of said .tube termin-ating at a point above the level of said oil supply.

2. In a right angle pump drive including a housing and a drive shaft and a driven shaft extending perpendicularly to each other into said housing with intermeshing gears secured von said shafts, respectively, within said housing, providing a `driving connection between said shafts, said driven shaft being vertically disposed vwithin said housing, asight opening formed' in a side 'of said housing providedv with altransparent closure, said opening being disposedradially outwardly of said drivenishaft in a position to enable visual` observation of said intermeshing gears andto intercept oil thrown radially outwardly from about the level of said intermeshing gears upon rotation of said driven shaft .thereby enabling an operator to visibly observe the degree of lubrication of said gears, -and powerdriven means for supplying a continuousflow of oily to said intermeshing gears.

3. In a right angle pump drive including a housing having side walls, a top and a bottom, a drive shaft and a driven head shaft extending perpendicularly to each other into said housing, said head shaft being vertical and extending outwardly of ithe" housing through the bottomi'fthereof, -a fdrive gearv within said-housing secured on saidkdrive shaft, meansform'ing `a vdriving-'connection-between said-drive-'shaft and' said `driven shaft including a vertical hollow shaft within said fhousin'g having-a driveiif gear `secured thereonihfmesh with said driveigea'r,` means removably seCuriiig -fsaidf hollow 4shaftto lsaid head shaft 4with thev latter extendingv into said hollow shaft, pump means hat 'the lower end of said hollow shaft `including a pump "runner secured to saidhollow shaft, va bearing carried bythe lower end of saidhollow shaft positioning said lower end rotatablyin said housing, meanspositioning'sai'd drive gear and 'saiddriven gear in mesh'` with each other,rneans securing said hollow shaft, 'driven gear,` pump j runnerY and I bear- "ing. together for .removal from .said head .shaft asanriit. M v

f lUIn-a rightangle'ipurnpfdrive, including ra `extending :annular iiangeoarried .by said bottom .iwalliprojecting 'upwardly-into :said housing; .a

panni-vertically aligned yspaced bearings :respecltively. supported bylsaid .horizontal flange and by said "vertical l'arlge;..a vertical, :hol-low shaft wholly :enclosed .within r:said' housing lsupported -for-rotation at .its uppe'r rand.V llower iendsvby said bearings -andl extending above. 'and below :said Ibearings at said .upperand lower ends.; the infner -sidesiofg :said vertical .flange fbelow the bea-rfing supporting the', lower rend of `said hollow .shaft fbeingcylindrical .and .concentric with :said .'shaf't, `and: :1a vertical ipump runner. below :said latter `bearing.embracing liandisecured to 1.the :lo-werend of said hollow rshaft, said :runner be- ;ing `fexteriorly formed 'with a: helical athread Aslidaby yengaging said cylindrical inner isides .oi -saidffiange for rotation 'rin :the latter; .ea horizon- `ital closure plate generally :coe-planar with said bottom wall 'secured to ithel latter :and l:extending .below said runner xwhereby the runner iis wholly enclosed within. the 'cylindrical Asides I-oftsaid -langepa chamber fora supply of Voil surroundingfsaid AYvertical :flange and said liange Thaving '.-an vupper .sport :and la' .lower 'port respectively opening into the. portion of the flange embracing said runner .at points adjacent :the upper .and -lower .ends of said runner, respectively; .a con- 'dut outwardly =of 4said hollow shaft extending from said .upper :port to .above said horizontal ange for -supplying oil I.to the bearing carried .by siad latter flange; said iclosure below said ,rune

ner being centrally apertured in axial alignment withsaid bearings :and'hollow shaft; ahead-shaft extending vertically .through said central aperture and into ysaid hollow shaft; means securing together-the upper `ends ofsaid hollow shaft and said head ishaft; a .bevel .gear embracing :said .hollow'ishaft between said .bearings ,and rigidly secured .to said :hollow shaft and a .horizontal drive shaftrotatably:extending ,througlif one of said side wal-ls having abevelwgear on its end within said housing inmesh .with the bevel gear ,on'said hollow .fshaftg a second port in said ver- 'tical ilange communicating with the upper end/.oi said runner, and a conduit extending from said second port to apointV adjacent the `point of mesh between said bevel gears for discharging oil onto said gears .at said point when said runneriseactuated by rotation of said hollow shaft.

5. In a construction as defined in claim 4, a centrally apertured horizontally disposed lcap above the :bearing carried -by `said horizontal 1iange,.said .cap being vformed with apdepending annular ange secured to said-horizontal flange outwardly of the `bearing carried bythe latter; the central aperture-in said cap slidably embracing the Vuppermost end -of `said hollow shaft and the .upper discharge .end of the rfirst mentioned conduit terminating within Ythe area enclosed by saidcap whereby the oil discharged into said area willY cover Athe bearing below said cap.

6. ,A right angle pump drive comprising; a housinghaving lateral side walls, a bottom wall, and a top wall; a pair of vertically alignedibosses respectively formed on 'saidtop' and Ybottom walls; a`vertic'a1 driven hollow shaft rotatably extend-l .ing through theiupperfboss y:ofsaid'l pair and into -theflower boss; a Escrow-type `.pump runner rotati- La'bly Vlltted within. the'lower fboss 'or-said pair tand :secured- .to said driven shaft; va .pair lof .bearings iorisaidshaft respectively supported within-said bosses; the flower bea-ring .of -said pair extending over said pump runner; a horizontal drive :shaft rotatably `.extending into `.said :housing through =one` of :saidside walls; a .pair -of iintiermeshing gears respectively secured .to .said `drive shaft Vand to .said driven lshaiit between' -said ',pair `of bearings; said lateral side walls,

bottom wall; andthe lower boss ofsaid Pair cooperating'with each ,other to `form Aan annular oil reservoir around said lower boss; an inlet port iin said lower yboss adjacent .said bottom -wafll communicating between the .lower end :of :sa-id runner and the lower :portionof said Ireservoir.; an outletport inthe upper end .of said flower 'boss communicatingwith .the upperend of said runner; a conduit for oil extending from said outlet portthroughsaid `top walland opening at fits upper' end .into the -spaceabove `the rupper bearing of said Apair for `conducting yoil Pumped zby said runner to the'upper-end `of the .bearing of said pair for lubricating said latter .bearing and passage y of such .oil by gravity past said bearing to the ,said ,gearshtherebelow and ybaci: @to said reservoir. y

f7. vIna right anglepump dri-ve including La housing having llateralside walls, a vbottom wall, andga .-tOp wall respectively supporting bearings rotatably supporting .a .horizontaldrive shaft andvga vertical, hollow driven shaft carrying gears in iintermeshing relation within saidhousing; saidbottom .wall having a boss .projects ing vertically into said vhousing. within` the 'up-f .per end *of which is supported one .of .the Ibearings A:for vsaid Ydriven -shaft;.a screw-'type `pump runner-for oil secured .tosaid .driven shaft With-'- in said rboss and .below `saidlast mentioned bear-'- ing; a solid vertical shaft spaced within said driven .shaft seouredatiits upper end. to said driven shaft at a .point adjacent' the 'bearing in said top-wall that supports said drivenshaft and extending r.through .said boss outwardly of said .bottom wall; f a vertical sleve having 4a radi-vv ally .extending flange .around'its lower end; said nange -extendingfacross rthe 'lower end of`jsaifd drive rshaft and pump `runnerjand 'rml'ysecured at outeredges to said bottom Wall.; Said bOSS, bottom wall and .side `walls .cooperatingto'form an annular .oil reservoir around .said 'boss and van inlet port .and an .outlet respectively, communicatingbetween ,said .reservoir and the 'upperand lower ends respectively, of said. runner; rsaid sleeve being.. spaced within said hollow shaft and saidbear'ing and spaced around said Ysolid shaft and terminatingatits `upper end above thelevel of oil ladapted .to beheld in said reservoir there` by forming a frlctionless oil seal `between'said oil reservoir Iand said hollow andlsolid shafts preventing leakage of oil' around said 'hollow y shaft .and .through said bottom wall to outside said housing.v y

8. In a right angle Apump Ydrive *including-1 a housing, anda drive shaft'anfd'a vertical'driven shaft extending :perpendicularly to'each other into said vj housing with intermesliing I gears 'se- .cured .on vsaid shafts "respectively .within'ysaid housing; a 'ball bearing including an'inner and anouterrace, 'supported 'withinthe upper end of said "housing 'mounting the upper end 4:of Jsaid I gearsymeansf for-supdriven shaft above .said t Y l plying oil to the "upper -side of said-"bearing 'for owing by gravity between said inner and outer race and for dropping directly from the space between said races; an annular disk centrally secured on said `driven shaft projecting horizontally therefromradially outwardly beyond the downwardly projecting area below said inner race and the space between said races for directly receiving on its outer marginal portion the said oilV that is adapted to drop directly from'said space whereby said oil will be relatively violently flung generally radially outwardly of said disk when said drive and said driven shaft are rotated; said disk extending radially outwardly over the said gear secured on said driven shaft, and a pair of spaced bearings in said housing supporting said drive shaft for rotation; and means positioning said bearings radially outwardly of said driven shaft and at a level below said disk so that oil flung directly from said disk will fall between said pair of bearings. n

FRANK BABBITT BRAKE.

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