Патент USA US2406069код для вставки
Aug. 20, 1946. ' w. R. FREEMAN - 2,406,069 ‘BEARING Filed ‘Nov. 1, 1944 1 l/h/i/v‘rol? We; TER R, measly/QM ‘BMW Patented‘Aug. 20, 1946 UNITED: . ' . STATES - . I ‘ 2,406,069 PATENT ‘ OFFICE“, . v Q BEARING 2,406,069 r , . _, - 'Walter R..Freeman, St.- Louis County, Mo.‘ rAprplication ‘November 1, 1e44, Serial No. 561,397 7 Claims. (Cl. 308—184) 1 2' i I ' ' ' . 5': the support and an internal diameter greater than the diameter of" the shaft, l3. This-cage is provided with‘ a plurality.ofqcircumferentially This invention relates to bearings and more ‘ particularly to a bearing for use with a shaft which operates in ‘a liquid containing foreign spaced longitudinally extending slots l5‘ eX-tend- . vmatter. ing completely through the cage-wall. ‘Theslo‘ts An object of the invention is to provide an improved bearing ‘for a shaft which will be efli cient in‘ operation and have "a, long life with minimum shaft wear vunder conditions where the bearing and shaft are submerged in a-vliquid are-formedv with parallel side walls I] and these walls are spaced apart a slightly greater‘ distance than the radial distancebetween- the cylindrical opening l2 and the cylindrical- surfacet; l3 when 10 the‘ axes of these two surfaces -;are;-coinciding. containing foreign matter. In, each slot is positioned‘ an elongated. roller Anotherrobject is" to produce a shaft'bearing member l8 of a diameter to engagezthe, support whichisgso constructed. that the shaft is sup opening surface and the shaftsurfaceand thus ported onlyieldable rollers-which are free to roll centralize the shaft in the opening. ‘ Thisgrdi about their own axisiand also rotate bodilyabout the axis of the shaft.~ . _ ' . 15 . -A still further object is to produce a shaft ameter' permits the ‘roller members’ to ‘roll "freely in their‘slots.‘ - I v , .~ These roller- members-are constructed‘ of‘ ma, terial to provide al‘yieldable surface, av suitable material being rubber, a yieldable;plastic,- etc". whenr-the‘ bearing and shaftgpare submerged in 20 If it is desired to give the rubber'greate-r stability; fabric may be incorp-orated~therein.~ Where-the aliquid containing an abrasivesubstance. rolls have a, fairly large- diameter it is found : -A-' further object is to: producev a bearing which practical to provide the-:roller‘v members with'a will be:- self-cleansing and‘ self-lubricating when metal. corev in order- to~control the‘ yieldabili-ty employed with a shaft submerged in; a liquid 25 of the roller surfaces. With'theL roller members having abrasivematerial suspended therein. positioned- in; the slots of thevlcagev and the~as-— ; A'morerspeci?c object is to produce ‘antim sembly positioned :between'th'e' support and. shaft; proved'bearing which vis especially well adapted as» shown in the various ?gures; the shaft will for use as. a strut. bearing; for boat propeller bearing whichwill so operate thatgthere will be present‘ a self-cleansing action so that no ab rasive ,wear will occur between itgand the“ shaft be ‘properly supported - and», yet‘lvfreelyv rotatable shafts. ‘ I I _ _' i - - . Other, objects, of the invention will become 30 in the support since the roller~=members~arefree apparent from the following?deseription taken to rotate. in their slots. showing a preferred‘embodiment thereof. In theclrawing: V , v " ~ 1 ‘~ Inaddition to the roller members beingnfree to rotate about‘ their ow-n‘iaxis‘inqthe-caga-fthe in connection with the = accompanying drawing cage is also free to- rotate relativato- the-‘shaft , _. Figure 1 is a longitudinal sectional view of a so a, and the support andabout theaxis 'of the ‘shaft. bearing associated with a shaft and constructed Thus as theshaft rotates the: rolling-action: of inaccordance with my invention. the} roller members about their own~axis<will result .in .a‘ rotation of the cage; -_-'_I!l>1e~.act_ion;-gis Figures 2, 3, 4 and 5 are cross sectional views the‘same was‘ a planetary. wheel arrangement taken, respectively, onthe lines 2-—2, 3-7-3, 47-4, and'5~—,5 of Figure 1‘ and showing details of con struction. _ I i, r - a .. Referringu-tothe figures in detail, the numeral l_~l- indicates a- support member which-has a cy lindrical opening [2 therethrough. Extending through. this opening is a. shaft’ I3 which is of somewhat smaller diameter‘ than the opening l2. Between the shaft ‘vand‘the' support is positioned my. improved bearing, generally indicated by the ' numeral 14-, said- bearing permitting- rotation of, the shaft relative totheysupport and also act ing; as a supporti_ng-_. mediumqbetween the shaft andsupport. . ; v ’ The bearing construction shown comprises a cylindrical caged-Shaving: an; external. diameter smelleetnan- the ‘diameter. efihevepenins 1.1 in 40 wherein. the shaft is the- sunw-wheel, the. roller members the planet wheels and the cylindrical surfaceof theisupport it the. ?xed-orbitwheel. There will be».no. slidingabetween- the surfaces of the support and the shaft-contacted by1theroller members, only. a. rollingaction. ,- ~ ';:~ > In order that the ‘cage-will be properly-pen! tralized between .the surface of the opening [2 and‘ the- shaft 13, the-ends‘. of‘ the cage carry in ternalrings l9 of rubber or. otheri-suitable mate--v 50 rial which“ ride on vthe shaft and-maintain- the. cage in proper position.- The. cagezismrevented fromv shiftingaxiallyout of the-opening- l2~.-by? providing oneendof the =cagelwi-th-tai?ange. 2.0; for engaging one end surface ofgther-supports H‘ 55 and the other. end of. the cage . with: threads :and ‘2,406,069 a l , anYannular nut 2| for cooperation with the other 4 ~ ' ' _ claim as new and desire'to'seoure by Letters Pat . end of the Support. An annular locking nut 22 holds the nut 2| in desired position. The ?ange ent of'the United States is: 20 ‘has notches 23 and nuts 2| and 22 have and‘a surrounding support, a cage having circum ferentially spaced elongated members, means for securing the members from'relative movement,v V 1. In a bearing for cooperation with a shaft ’ notches 24 »(see Fig. 4) and 25 for the reception of spanner wrenches so that the nuts can ‘be re moved to free the cage for sliding movement rollers having yieldable surfaces with each roller . along the shaft and out of the support opening )being positioned between two members and con 12. ‘ When the bearing is in proper position the ?ned thereby, said rollers being ;of adiameter cage should have onlyv suchaslight axial move 1O greaterthan the radial thicknessof vthe'members ment'relative to the support as to be freely ro ' and capable of contacting the shaft and support for rolling engagement on their surfaces, ra V dially extending slotted shoulder means carried by one end of the elongated members and a re tatable. The nut 2| on its side adjacent the support is provided with radial grooves 26 so as to permit free ?ow of liquid from the spacebetween the 15 movable radially slotted nut carried by the other ' support and the shaft and around the rollers. end of the elongated members. ‘ Fluid may enter this space from the opposite-end '2. .In'a bearing for use between relatively iro through the notches 23 in the ?ange. Thus when tatable members having spaced cylindrical sur the shaft is rotating in the direction indicated by' faces one of which acts as a supportfor the other, the arrow there can be a circulation of liquid 20 said members being submerged ina liquid carry -‘ through’ the bearing. This circulation is aided by ingvabrasive material, a cage having circumferen a-centrifugal pumping actioncaused by the rota- ' V .tion'of the shaft and the roller members about their own axis and about the axis of the shaft. tially spaced longitudinally extendinggmembers integrally united at their ends, said‘ members ‘ being so shaped as to provide parallel sided slots Thiscirculation of fluid through the bearing re 25 therebetween, rollers provided with 'yieldable sults in a self-cleansing and lubricationaction surfaces and positioned in the slots, said rollers and is particularlyadvantageous in mai-ntaininga being of greater diameter than the'radial thick-7 very high efficiency ‘for. the bearing when the rbearing' is employedlwith a shaft operating in a ness of the cage members and of a size to engage the spaced cylindrical surfaces when thebearing liquid, such as water, and particularly liquid 30' is in position, and means carried by the cage for ‘which’ carries foreign material of an abrasive preventing axial shifting of the cage but permit character such as} silt’ and sand. ‘ , 1 ting it to rotate relatively to the cylindrical stir-1 The bearing has been‘ found to be highly :e?i faces, said last named‘ means ‘embodying readily cient for use as a strut bearing for boat propeller removable means permitting said cageand rollers. shafts. Tests have shown that when this bear 35 to having relative bodily axial movement with;i~e-, ing is employed there will be little or no wear'of spect to the larger cylindrical ‘surface so ‘as to the shaft, regardless of‘ the amount of foreign assume a position where the'rollers can be freely material, such as silt and‘ ‘sand, ‘in the water. removed in 'a radial direction-7 from the slots. '_ This result is obtained primarily from the-pare 3, In a bearing for use between relatively ro-' ticular construction of the bearing." The‘vroller 40 'tatable members having spaced cylindrical sur-i members I t have no sliding action'on'the sup. faces one of'which; acts asya support for the port surface or the shaft surface. The foreign other, ‘a’ cagerhaving circumferentially spaced longitudinally ‘extending 'members' integrally . 7 material is ‘merely rolled over by the yieldable ' surfacesof the roller members. There is no rub united at their ends, said members beingjso bing action which is the cause of shaft wear in :45 shaped as to‘ provide parallel sided'slots there' present 'strut bearings. The centrifugal pump; ing action resulting from the rotation of the shaft and the'roller members of the bearing also pre-1 between, rollers provided with iyieldable surfaces positioned in the slots, said rollers being of great- 1 ‘ 'er'idiameter than the radial thickness ‘or the ‘cage members and of a size to engage the spaced vents‘accumulation‘ of sand and silt and'insur'ej adequate water lubrication. 50 cylindrical members‘ when the bearing" is in po 4 When the roller members deteriorate and rei quire-replacement such can'be'very easily accome sition, ring means carried by’each 'end of the / . cage and engaging the inner cylindrical surface plished'without the necessity of taking the cage for supporting " the longitudinally extending completely off the shaft and also removing the members of the cage inspaced relation to the eye, propeller. The nuts 2| and 22 are unscrewed and 55 lindrical surfaces, and means carriedbyythe cage the cage and roller'members slid along the shaft . l ' to theleftias viewed in Figure l) to a position for preventing axial shifting of the cage but per mitting it to rotate relatively to, the cylindrical where¥the bearing‘, is removed from the support. ‘ surfaces. Theroller members may now be picked out of the ‘ slots and new ones placed in the slots. The", bearing can then be placed back inoperative‘. ;, .positiom, Since the‘ shaft does not become worn; by the use of the bearing there is never any necessity-for replacing the shaft, asmust be done with the present strut bearings where an abrasive action due to turning of the shaft in a fixed Surface-"1. , . . V - . i ' vBeing aware of the possibility of modi?cations ' in, the particular bearing structure shown and‘ .7 _ H . > 4: A bearing for‘ use‘ between tworelative r0 tatable members having different size internal. and external cylindrical surfaces, said bearing comprising a cylindrical cage formed with cir qcumferentially ‘spaced longitudinal slots, said cage'havinga' radial thickness‘ at the‘, slots less. 65 than the radial space between the‘ cylindrical ' surfaces, rollers positioned in. the slots for rota-1 > tion therein and havingyyieldable surfaces, said ' rollers beingof a diameter greater than the ra-'-. dialthickness of the cage at the slots and'en-. described, without ‘departing from the funda-i 70 gaging the cylindrical surfaces when the bear-‘ mental’ principlesof my invention, I do not in-‘ tend that the scope of said invention be limited‘ ingis in position, means at the ends of the cage‘ to centralize the cagebetween the, ‘cylindrical in any "manner 'except'in accordance with the‘ , ' surfaces, and shoulder means on the ends of the appended 'Havlng'fully claims.‘v described '‘ a my‘ invention, , '_ _ what Y. I cage for engagement’ with shoulders on one, of 75 the members and thereby limit axial movement ' 2,406,069 5 - of the cage with respect to the members, said shoulder means being slotted to permit flow of ?uid through the cage and around the rollers. 5. A bearing for use between two relative ro 6 material, said bearing comprising a cylindrical cage formed with circumferentially spaced lon gitudinal slots, rollers positioned in the slot for engaging the cylindrical surfaces, said rollers be tatable members having di?erent size internal and external cylindrical surfaces, said bearing comprising a cylindrical cage formed with cir ing made from rubber or like yieldable material and capable of free rotary movement about their cumferentially spaced longitudinal slots, said movement relative to both'cylindrical surfaces, cage having a radial thickness at the slots less than the radial space between the cylindrical surfaces, rollers positioned in the slots for rota tion therein and having yieldable surfaces, said rollers being of a diameter greater than the ra dial thickness of the cage at the slots and en axes and said cage being arranged for rotary and means on the ends of the cage including a removable member for limiting axial movement thereof during operation. '7. A bearing for use between two relatively ro tatable members having different size internal and external surface, a cylindrical cage provid gaging the cylindrical surfaces when the bear 15 ed with longitudinal slots having parallel sides, rubber rollers positioned in the slots and. of a di ing is in position, yieldable rings at the ends of the cage to centralize the cage between the cy lindrical surfaces, and shoulder means on the ends of the cage for engagement with shoulders on the member having the internal cylindrical surface and thereby limit axial movement of the cage with respect to the members, one of said shoulder means being removable. 6. Abearing for use between two relative ro tatable members having diiferent size internal 25 and external cylindrical surfaces, said members being submerged in a liquid containing abrasive ameter greater than the thickness of the cage at’ the slots, said rollers being free to rotate in the slots when engaging the cylindrical surfaces of the relatively rotatable members, yieldable rings on the ends of the cage for supporting the cage in spaced relation between the cylindrical surfaces, means providing an outwardly extend ing shoulder on one end of the cage, and an an nular nut on the other end of the cage. WALTER R. FREEMAN.