Патент USA US2404610код для вставки
July 23, »1946. H~ Q_ ABELL ' - 2,404,610 OIL SEAL Filed Junè 22, 1944. ~ _ß _ _ INVEN TOR. BY Arme/yay Patented July 23, 1946 f ì . _y i rUNITED > STATES ` ` „ _2,404,610 PATENT OFFICE 2,404,610 oIL sEAL Henry Clark Abell, Interlaken, N. J. v Application June 22, 1944, seriaiNo. Y541,490 (o1. 286-11) v 2 This invention relates to new and useful im provements a seal. More specifically, the 4invention proposes the construction of a seal, such as a ball or roller vbearing' oil or grease seal, for sealing the space between a shaft and a housing against the loss of 'lubricant without the sealing taking place at . disposed between the shaft and the housing »ad jacent the seal. The seal and the ball 'bearing are of the *same outside diameter. The ball bearing includes an inner raceway I'3 pressed 'on the shaft I0, a two-part outer raceway I4 pressed in the housing I'I, the two parts of the race way III Vbeing secured together by »tap "screws I5, and balls 4IS disposed between the raceway's. Ball bearing I2 may mount the housing »on the either the shaft or the housing. Still further it is proposed ‘to provide a seal as aforesaid, having a part adapted to be secured 10 shaft or the shaft in the housing, V‘as desired. to a shaft, a part adapted to be secured to a For instance, the shaft I 0 might be the rotatable housing or the like, and sealing means between rear axle of an automobile and ïthe housing I'I the parts. ` might be the stationary axle .housing ‘of the 'Still> further it is proposed 'to provide a seal as aforesaid in which the part secured to the 15 The seal, according to this invention, comprises ‘shaft has a circular tongue and groove connec an oriñced member I'I rigidly secured to the shaft automobile. tion with the part secured to the housing. . . I , I0 by being pressed thereon. 'Member Il'IA has Still further it is proposed >to provide a seal a center radial tongue I8, a shoulder rI'l9 at 'each as' aforesaid provided withsealing' material in side of the'tongue, each shoulder VI9 being iin engagement with the sides >and edge of the cir 20 clined outwardly from the tongue, and a :shoulder culartongue. " Y ' 20 at the outer side of each shoulder ‘I9. Mem For further 'comprehension‘lof the invention, ber I‘I is'circular and consequently the >tongue and of the objects and advantages thereof, ref and shoulders are `circular also. Shoulders 20 erence lwill Abe had to the following descrip lare of shorter radius than shoulders I9 vand tion and accompanying drawing, and to the ap 25 shoulders I9 areof shorter radius than tongue pended claims in which the various novel fea tures of the invention are more particularly »set forth. ' o ` Y, ' . VIn the accompanying drawing forming a mate rial part of this disclosure: ` ' lis a section on the line I-I of -F‘ig. 2 A casing 2I is rigidly secured in the housing I I by being pressed therein. Casing 2‘I has a circular wall `22, concentric and in engagement with the inner face of the housing, and an or ificed wall 23 at right, angles to wall 22 and in çof a seal constructed in accordance with this -line with one of the shoulders 20 vwhich is dis invention, a shaft, a housing and a ball bearing posed in the oriñce of wall 23 with only working being vshown in association therewith. clearance therebetween. Wall 22 at its margin Fig. 2 is a side elevation of the seal shown remote from the `wall 23 is provided with an in Fig. 1, viewed from the right thereof, ” internal‘groove 24 for a split ring 25 which re-` Fig. 3 is a sectional view similar to Fig. l of a tains the following circular and parallel mem seal constructed in accordance with a modifica bers: a 'synthetic rubber washer 26 parallel `to tion -of this invention. , , . and in engagement with the wall 23, ~engaging Fig. 4 is an enlarged >elevational view of a 40 at 'its outer circumference the wall 22 and being sealing disc of the seal of Fig. i3'. , spaced at its inner circumference from the ad The seal of the »present invention is especially jacent shoulders I9 and 20; 'a sealing discv 21 adapted for .useA as a ball or roller bearing oil in engagement with the ‘washer 26 andthe wall >or grease retainer between a shaft and a hous and extending radially» inward from the washer ing, one or both of which may be rotatable, and 45 26 and having a flange -28 extendingvfrom 'its it will be so treated, for simplicity, in the fol inner circumference toward tongue I8, which it lowing description. However, it will be under- ‘ engages with a sliding ñt; a thick felt lubricating vstood _that the seal has general _application to washer 29 engaging wall 22 at its outer circum#` ' rotary structures for providing a retainer against ference, the outer circumference of tongue I8 at f the leakage of lubricant or other vfluid from a space betweenrotary parts. ‘ . >lfteferring to Fig. 1, it will Abe seen that the seal of the present invention is disposed between ~a `shaft lûand a housing II, eithermor both of yits inner circumference, `and disc ‘21 at one of its sides. The rubber washer 26 acts as a »spring forcing the disc 21 against the washer 29 and against the tongue I8. As it >is made of syn-' thetic rubber, itis not affected by th‘e:„oi«l v’or . .W'hich‘may be rotatable. A ¿ball bearingis also "55, grease >contained V,in „the 'seal;,_;îanother..1disc .,530 2,404,610 which is similar to disc 21 but has a flange 3l oppositely disposed from flange 28 so that it ex tends toward flange 28. Disc 30 engages the other side of washer 29 and its ñange engages the tongue I8 with a sliding ñt; a disc plate Ul pressure spring »32 engaging the disc 30 and . Ving washer 40 in engagement with the adjacent side wall of the tongue I8'. Other parts of this seal corresponding to similar parts of the seal of Figs. 1 and 2 are indicated by like references with i forcing it against the washer 29 and the tongue I8.` Spring v32 is shaped like a‘washer but has an outer Yportieri 33 „and an offset inner Portion 34 connected 'by a .reversely curved lportion 35 4 with a groove 39 in which is disposed a felt seal an accent added. The operation of this form of device is substan tially like the operation of the seal shown in Figs. l and 2, except that the felt washers 38_and ' ‘4*ßjfurther prevent passage of ,oil or grease passed the which gives it a lateral spring action when it seal.v " *' ` ‘ ' ‘ While I have illustrated and described the pre is forced against the disc 30. ferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications l The pressure plate or arwasher 36 is disposed y between the split ring 25 and the spring 32. The rubber washer 26 and the spring 32 maintain all of the parts of the seal in tight pressure ñt. Split coming within the scope of the invention as de ring 25 has -a hole 38 adjacent each side of its split for the insertion of a tool (not shown) to fined in the appended claims. Having thus described my invention, what I Compress the split right for insertion and removal 20 claim as new, and desire to secure by United from the groove 24. ' States Letters Patentsjis: _ V . , 1 Theoperation of this form of device is as fol; l. A lubricant seal comprisinga circular mem ber having a central orifice for’receivingashaft t The roller bearing is lubricated with oil or and a radial tongue, a casing havingY a ,central grease, as desired. For instance, it may be lubri oriñce in which said member is disposed,.saidicas; cated'with oil contained in housing II at the side 25 ing being adapted to be secured in a housing, said >of the .ball-bearingremote from the seal. >The casing having a circumferential wall concentric seal ; prevents the oil from'passing out of the with said member orifice and another wall par housing I I.V As the ball bearing has parts pressed allel to and spaced'from said tongue, the outer lon thev shaft and in the housing, the oil only circumference of said tongue being‘sp'aced from passes through the ball bearing between the race 30 said casing circumferential wall, a lubricating fways. As `casing k2| is pressed in the housing washer in said spacebetween said tongue yand and as member _I1 is -pressed on the shaft, the said casing circumferential wall, said washerfbe 3oil cannot escape between these parts. Oil can ing wider than said tongue, a sealing discin en pass between the washer 36 and the adjacent gagement with each side of said lubricating wash shoulderfzßdue to the cle-arance therebetween. 35 er and each disc havinga flange` concentric with ¿This oil lubricates thesideof the tongueV I8 en and engaging the adjacent side of said tongue, an v1gaged by theiiange 3|. Flange i, Y 3| prevents any ` elastic resilient and massive rubberY washer' be Vexcess of oil from passing between it and the tween said casing other wall and the _adjacent Jtongue, -' However, it permits enough oil to pass sealing disc, a plate' lspring ‘engagingjth'e outer ‘therethrough’ to* lubricate- its ~engagement with face of the other of said sealing discs, and means lthe, tongueêso‘that the flange does not- weark the retaining said plate spring, said plate `spring and ,tongue This oilvsoaks into the felt washer 2S saidÀ rubber washer Yexerting forces urgingl said lows: . . . . ’ . . ., 1which,therefore acts as a lubricant‘reservoir for Ysealing discs against said lubricating _washer and îoil, always maintaining a certain amount of oil said tongue. for lubricating the parts of the seal rotatably en ' ‘gaging the member I‘I. Some of this oil lubri `Cates the Yengagement of the flange 28 with the ïtongue so that wear does notV result.> Flange 23 „ ìprevents. any excessive oilA from passing between Y ' Y i l it and the tongue. Thus the seal effectively pre- l vents any material escape of oil from the housing `II, _only enough oil being permitted to pass l throughthe seal to lubricate the seal and be used . ` up therein. The seal is employed at atmospheric pressure, `no other pressure being needed to eifectrsealing l, by any of the parts.,- This `isïan advantage of the vseal of the present invention.` >It is contemplated 1 that the seal maybe made of various diameters l corresponding ltostandard- diameters, of ball and 1 roller bearings, so that itïwill fit in the housings , containing same. >While specific materials have ‘ îfbeen stated, such as the synthetic rubber washer T26 and the felt 'washer-29,. it will be understood Vthat this is-'by> way of example ,only and other 1 >_sui-table materials may be employedfif desired. the modification of theinventionshown in ~ Figs. '3 and 4, zthe construction .of the. seal .is 1 Y ' ' > * - 1 _y 2. -All‘ibriclant' seal comprising. a member hav Ying a central oriñce for receivinga shaft and-` a radial tongue, a casing having a central oriñce 1n which said memberjis disposed, said casing being adapted to be securedfin-ahousing’said casing having a circumferential wallY1c’on'c'entricV With said member oriiice` and another A`wall par allel to and spaced from said tongue, the outer circumference of said- tongue beingY spaced from said casing circumferential walLa felt wasl'ierv in said space'between and engaging said tongue and said casing circumferential'wall, a sealing'disc> in engagement with each'rside ofV said'washe'r _and With each side of said tongue, an' elastie'massive rubber washer .between said casing other wall and the adjacent sealingdisc, 'aplate spring engaging the outer face yof the other of said sealing discs, and split rin'gïmeans retaining said plate spring, said plate spring and said Vrubber- washerexert l ing' forces urging said sealing-discsr-against said felt washer and said tongue. ‘ 3. ‘A lubricant seal comprising a member having a centraloriíice for receiving a shaft and a radial tongue, a casinghaving a central orifice in which Ísimilar to that previouslydescribed except the said 'member isrdisposed, said.- casingbeing adapted shoulders I9’l are. not inclined,'and vdo not extend -to be'secured in a housing., said casing havin'g‘a ` kbeyond the discs 2l’ and 3G', 'the space between circumferential wall concentric -with said member i. the synthetic rubber-washer '26,' -andthe adjf’fi `« cent shoulder 2ü'iis filled with a felt washerrßß’, . -oriñce and anotherA wall Yparallel to'andispavced ¿from said tongue, the outer» circumference of said tongue beingspaced ‘fromsaidbasing circum "‘the' felt washerZQ’Í'does. .not engage> the tongue " I8’ andthe flanges 28’ and 3|' areÍprovided-each 75 ferentialwall; a felt lubricating-ïwasher in" said 5 2,404,610 space between said tongue and said casing cir cumferential wall, said Washer being wider than said tongue and engaging said tongue and said casing, a sealing disc in engagement with each side of said lubricating washeneach of said discs having a iiange concentric with and engaging said tongue, an elastic resilient and massive synthetic rubber washer between said casing other wall and the adjacent sealing disc, a plate spring engaging the outer face of the other of said sealing discs, a pressure plate engaging the outer face of said plate spring, and a split ring- retaining said pres sure plate said plate spring and said rubber washer exerting forces urging said sealing discs against said lubricating washer and said tongue. 4. In combination, a housing, a shaft, anti friction bearings between said housing and said shaft, a circular member secured on said shaft and having a radial tongue, a casing having a 6 tongue, the outer circumference of said tongue being spaced from said casing circumferential wall, a lubricating washer disposed in said space between said tongue and said easing circumfer ential wall, a sealing disc in engagement with each side of said lubricating. washer, each of said discs having a flange concentric with and extend ing toward said tongue, each of said flanges hav ing a circular groove, a felt washer in each of said grooves each in engagement with a side of said tongue, a resilient rubber washer between said casing other wall and the adjacent sealing disc, a plate spring engaging the outer face of the other of said sealing discs, and means re taining said plate spring, said plate spring and said rubber washer exerting forces urging said sealing discs against said lubricating washer and said tongue. 6. LA lubricant seal comprising a member having central orifice in which said member is disposed, 20 a hub provided with a central orifice for receiv said casing being secured in said housing,_said ing a shaft or the like and a radial tongue ex casing having a circumferential wall concentric tending from said hub, a casing having a cen-v with said member and another wall parallel to and tral orifice in which said member is disposed, said spaced from said tongue, the outer circumference casing. being adapted to be secured in a housing, of said tongue being spaced from said casing cir cumferential wall, a washer between said tongue - and said casing circumferential wall, a sealing disc in engagement with each side of said washer and with each side of said tongue, an elastic re said casing having a circumferential wall con centric with said member oriiice and another . wall parallel to and spaced from said tongue, the outer circumference of said tongue being spaced from said casing circumferential wall, a, lubri silient and massive rubber washer between said 30 cating washer disposed in said space between said ' casing other wall and the adjacent sealing disc, a tongue and said casing'circumferential wall, a plate spring engaging the outer face of the other ` sealing disc in engagement with each side of said of said sealing discs, and means retaining said lubricating washer and with each side of said plate spring, said plate spring and said rubber tongue, a resilient rubber washer between said washer exerting forces urging said sealing discs 35 casing other wall and the adjacent sealing disc against said tongue. , and spaced from said hub, a felt washer disposed 5. A lubricant seal comprising a member hav in said space between said rubber washer and ing a central oriñce for receiving a shaft or the said hub, a plate spring engaging the outer face like and a radial tongue, a casing having a cen of the other of said sealing discs, and means re tral orifice in which said member is disposed, said 40 taining said plate spring, said plate spring and casing being adapted to be secured in a housing said rubber washer exerting forces urging said or the like, said casing having a circumferential sealing discs against said lubricating washer and wall concentric with said member orifice and an said tongue, ~ other wall parallel to and spaced from said HENRY CLARK ABELL.