US1920772A - Locomotive driving box - Google Patents

Description

1933- H. s. VINCENT 1,920,772

LOCOMOTIVE DRIVING BOX Filed Aug. 12, 1927 2 Sheets-Sheet l INVE TOR Wv M ATTORNEYS 1933- H. s. VINCENT 1,920,772

LOCOMOTIVE DRIVING BOX Filed Aug. 12, 1927 2 Sheets-Sheet 2 2 2 22 i7 lNVENTOR 2 6 ATTORNEYS Patented Aug. 1,1933 7 This invention relates to locomotive driving boxes particularly to bearing 111831181011 such boxes below the center of the journal.

. At times certain driving strains in alocom otive have a tendency to move the box upwardly with relation to the journal. Such movements result in abnormal strains on certain parts of thebox, particularly the main bearing when it reseats itself en the journal, and sometimes such movements cause breakage of lubricator and other parts below thejournal.

' Iaimto overcome'such diffi culties by the use of 'bear'infgs carried by the box structure below the center of the journal, l5

in'gs under the main bearing.

How the foregoing objects "and advantages, together with others which will occur tolthose skilled in the art, are obtained will be clear from the description considered in connection with the accompanying drawings which illus tratea preferred embodiment of the invention, and in which. 7

Fig. lis an end view-of a'driving boxembody- 'ing the improvements of the present invention, the figure being half in section and half in elevation. Fig. 2 is a side view of the box taken substantially as indicated by the line 2-2 of Fig.

the bearing side of the journal'5 from the bottom 6. A bear- ,ing backing member '7 is provided above the journal and this member and the legs 4: are provided with shoulders. 8 and 9, respectively, which 00- bottom and having upwardly extending legs, a

operate tosupport thebox on the journal. A crown bearingll) is interposed'betweenthe back mg member 8 and the journal. The wedges 11 are adapted to retain the legs of the bearing 10 against the shoulders 12 formed on the dovetail shaped spacing lugs 13 extending inwardly from each leg 4. I

A morespeciiicobjectis the provision of sim pleand effective means for adjustingsuch bear journal 'as 'wear occursin' the tion to this particular type of box as it may be the bottom is provide a lubricator pocket theretree-t; STA PAT T OFFICE between and a bearing pocket on each side of the box between the legs 4.

The lubricator may be er any suitable type. That shown includes a spring 15, a follower plate 16, a grease cake 17 and a perforated plate 18. t A bearing 19 isprovided in'each pocket at the sides of the box and is supported therein by the,

wedge 20 having a tongue and groove engage- .gt ment 2 1 with the bottom 6. The wedge also has a tongue and groove "engagement 22 with the bearing 19. The upper face of the wedge. 20 and the lower'face of the bearing 19 are oppositely inclined and cooperate to s upportthe bearingand retain it adjacent the shoulder 23 formed on the. lug 13. j 'A depending apertured lug2 l is provided at the outer end of the wedge 20 anda bolt 25 secured in the bottom 6 extends outwardly through the aperture in the lug 24. Adjusting and lock nuts 26 and 2'7, respectively, are provided on the bolt 25'. g

When wear occurs in the crown bearing 10 the bearings 19 are advanced by machining off the top' shoulders 28'and advancing the wedge. The adjustment of the bearings should be close enough to almost immediately arrest any up- Ward movement of the box relative tothe jour nal, but these hearings should be far enough away from the journal to allow-a film of lubricant to pass around to the crown bearing.

In the modification of Fig.3 I have provided a recess 29 in which shims 30 are provided. This arrangement may be adjusted by removing one or more shims and advancing the wedge a corresponding distance.

According to the foregoing I have provided bearing means below the center of the journal which are simple and rugged in construction *and which will effectively prevent abnormal movements of the box upwardly withrelation so i to the journal. Furthermore, I have provided 7 simple and effective means forjadjusting such bearings. r

I claim:-- I

1. In a locomotive driving box closed atthe pair of spaced walls extending upwa1-dlyirom Two spaced walls l l extending upwardly from 2. A locomotive'driving axle bearing arrangel'l'o normal relative vertical displacement of the journal and the box, said stop means being interposed on each side: of the lubricator between the journal and the bottom wall of the box and further being positioned sufficiently below thecenter of the journal to transmit the thrust of said excessive or abnormal relative vertical movement of the box and the journal primarily" in a generally vertical direction to said bottom wall, and the stop means being provided with a bearingsurface conforming to the curvature of the journal throughout when'the' stop means are in contact therewithbut normally spacedout of bearing-contact therewith, whereby lubricant may becarried by the journal from the lubricator upwardly to the bearing above the journal.

3 A locomotive driving axle bearing, arrangementincluding abox structure surrounding the axle journal and having side legs, a bottom wall spanning the side legs' and rigid therewith, a.

bearing in the box structure above the journal adapted to transmit weight of. the locomotive to the journal, a lubricatordevice in the boxv structurebelow the journal of width substantially less than vthe distance between the side, legs, said lubricator device being adapted to .feedlubricantto the surface .of the journal to be carried thereby to said bearing, stop means in the,box structure for preventing excessive or abnormal relative vertical displacement of the journal and theboxjaid stop means including a pair of stop membersin the box structure at opposite sides of saidlubricator device, the stop members being interpose'd oneach side of the lubricator between the journal and said bottomwall of-the box and further being positioned sufiiciently below the center of the journal to transmit the thrust of said excessive or abnormal relative vertical movement of the box. and the journal primarily in a generally vertical direction to said bottom wall, and the stop members being provided with bearing surfaces conforming to the curvature of the journal bearing surface throughout when the stop means are in contact therewith but being normally spaced out of bearing-contact with the journal bearing surface,,whereby, in either direction of operation,

said step members do not interfere with the carrying or transmission of lubricant on the journal bearing surface from, the lubricator device to the bearingabove the journal.

4. A locomotive driving axle bearing arrangement including a box structure sun'ounding the axlejou rnal and having side legs, a bottom wall spanning the side legs and rigid therewith, a bearing in the box structure above the journal adapted to transmit weight of the locomotive to, the journal, a lubricator in the box struc ture below the center of the journal for feeding lubricant to the bearing surface thereof to be carried thereby to said bearing, stop means in the box structure for preventing excessive or abnormal relative vertical displacement of the journal and the box, said stop means being interposed between the journal and the bottom wall of the box and further being positioned sufiiciently below the center of the journal to transmit the thrust of said excessive or abnormal relative vertical movement of the box and the journal primarily in a generally vertical direction to said bottom wall, and means reacting between the stop means and said bottom wall of the box for adjusting the position of the stop means in the box structure with respect to the journal, and the stop means being provided with a bearing surface conforming to the curvature of the journal but positively spaced out of bearing-contact therewith, whereby lubricant may be carried by the journal from the lubricator upwardly to the bearing above the journal.

5. A locomotive driving axle bearing arrangementincluding a box structure surrounding the axle journal and having generally upright side legs, a bottom wall spanning the side legs and rigid therewith, a bearing in the box structure above the journal adapted to transmit weight of the locomotive to the journal, a pair of spaced partition walls extending upwardly from said bottom wall, said partition walls cooperating with each other to form a lubricator pocket and with the side legs of the box to form a bearing pocket oneach side of said lubricator pocket, a lubricator device in said lubricator pocket, and a bearing member in each of the bearing pockets, the bearing members being interposed between thejournal and said bottom wall and further positioned sufficiently below the center of the journal to transmit the thrust of excessive or abnormal relative vertical movement of the box and the journal primarily in a generally vertical direction to 'saidbottom wall, the bear-

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