US1715267A - Journal box - Google Patents

Description

' May 28, 1929.

l JOURNAL BOX J. ,GJAYx-:Rs 1,715,267

Filed Aug. 21. I1925 52 2 2o 5o /8 la .2Q

y n Y 2- /NVENTO/a JOSEDH G. @ya-Q5 UNITED 'rE-s Parar JOSEPH G. Aynns, on moNTcLAIn, "NEW f' AssIGNoR 'ro GENERAL morons conIeonArIoN, or Dn'rnorr, MICHIGAN, A CORPORATION or I mLAWAItIT..v

Y JOURNAL BOX.

This invention relates to journal boxes and comprises all of the features of novelt here-- in disclosed, by way of example, as em odied in a split, line shaft box.

An object of the invention is to provide a split journal box which will retain lubricant and support antifriction bearings more ef-- invention consists in the various matters hereinafter described and claimed.

In the drawings, Figure 1 is a longitudinal vertical section, Figure 2a transverse central section, Figure 3 an end'view partly in sectiolnvFigure 4 an edge view of an end cap and Figure 5 is a similar view of another form of end cap. l

The numeral 10 indicates lgenerally the journal box comprisingr a lower section 12 and an upper section 14, each section having a restricted and flattened central portion 16 vand enlarged end portions 18 to receive antifriction bearings, herein shown as split roller bearings 20. The restricted central portion has upper and lower spherical seats 22 and elliptical recesses 24 therein for cooperation with the usual hanger (not shown). Extending inwardly from the restricted portion of the lower section 12 are reinforcing ribs 26 and 28 which are semicylindrical to conform to but clear the shaft 80. Between .the ribs 26, depressionsformed opposite to the spherical seat 22 act as a sump for lubricant. The ribs 26 also serve as abutments forthe en d rings of the roller bearings and are slotted as at 32 for the passage of lubricant. The rib 28 also has an oil opening 34.

For retaining lubricant more effectively thejoints 36 between the sections are arranged above the axis of the shaft and inclined. To extend the lower section circumferentially through more than a semicircle wouldprevent tlieladmission of the shaft into the recess 38 of the restricted central portion although the ends of the box being larger can be and are so extended. The sides of the central recess 38 are accordingly extended on' a slant as indicated at. 36. rThe top sec-v tion, at its middle, has semi-cylindrical ribs on'the interior as indicated at 42 and tangential side extensions 44 which also terminate on a slant at the joints 36. The inclined joints not only serve to guide and center the top section onto the lower section' without re uiring dowels but also tend to'- drain oil down into the box. The joints are also raised above the oil level so that oil is less likely to reach them. The -Yoints are continuous from end'to end of the ox and although the ends of the lower box sections enclose more than a semicircle, nevertheless the bearings, being split, can be inserted from above by partially rotating the two halves thereof as they are inserted one after the other. Thisstructure is stronger and holds the bearings betterinasmuch as the lower section encloses more than half of them and the joints of the box do not coincide with the joints of the split bearings. Pairs of mating lugs 46 on the box sections are bored at vright angles lto the slanting joints 36 to receive taper pins or bolts `48 for clamping the sections of thebox to? gether, the taper of the pins aiding in proper- 4ly registering them.

Oil is admitted to the box through openings 50 and retained by end caps`52'. Each cap is shown in the form of a ring and is made from a pair of outer layers or sections 54 and an inner layer or section 56, all welded together, the outermost section being of com-l paratively hard metal to form a projecting abutment for a collar 57 on the shaft andthe inner section ,being of softer material. outer sections 54 may be formed as one thick layer if desired as shown at 55 in Figure, 5'. The inner section is also of greater diameter than the outer sections to engage aligned grooves 58 in the innersurfaces of the two box sections while the outer cap sections fit the finished interior surface of the box 'and make a close joint with the shaft. To hold the cap against turning, it has a notch 60 engaged by a .pin 62 driven through an o ening.

The

,in the top box section. Inasmuch as t e end 4 10U spectively, to allow assembly. The cap is split along thetlines 68 which slant upwardly' and outwardly 'from diametrically opposite ysides of the shaft'A opening 70 to points 72 upwardly tangentially as at 40 and terminate L which are higher at the outer periphery. Thus the lower cap section A64 has its shaft opening semici'rcular to admit the shaft but Aits outer edge encloses more than a semicircle tends yabove the longitudinal joints 36 beand oil which tends to be thrown outwardly is retained more effectively. The lower cap section is inserte-din VJthe lower box section which encloses more than a semicircle) by a rotary movement. The lower cap section extudinal joints at the sides, said sections having aligned grooves in their inner surfaces, v

and a split end cap held by said grooves and comprising a lower section extending above the joints between the box sections, and aI complemental uppersection; substantially as described. i

2; In a split journal box, a lower box section and an upper box section having longitudinal joints at the sides, said sections having aligning grooves in their inner surfaces,

and an end cap held by said grooves and comprlsing upper and lower sections meeting o'n inclines which slantl upwardly and o utwardly and extend above the joints between the upper and lower box sections; substantially as described.

, 3. In a split journal boxffor a shaft, a lower box section and an upper box section having longitudinal joints at the sides,`and\ a split` end ring to retain lubricant in the box and comprising a lower section having a semicircular shaft recess to fit the lower half of a shaft with side portions extending upwardly above the axis 'of the box, and a complemental upper section'having'a semicircular shaft'recess to lit the upper'half ofr'the shaft, the two sections of the end ringvvcompletely closing the end of the box outside the shaft; substantially -as described;

4. A' `journal box having its inner surface provided witha groove, an. abutment plate comprising an outer section of hard metal inner section of softer metal engaging said groove; substantially as described. i j

5. vIn a split journalbox, a lower section andan upper section having aligned grooves in their inner surfaces, al cap'comprising a section having itsperiphery of a size to fit fitting the interior surface of the box and an' said groove and a second section of smaller l size fastened to the first section and fitting the inner surface of the box; substantially as described. V

'6. In asplit journal box, a lower section and an upper section having aligned grooves in their inner surfaces, a cap comprising a section having its periphery of a size to fit said groove and a second section of smaller size,A said `section of ,smaller size having a notch, and a pin extending I through the substantially as described 7. -A split line shaft box having a restricted upper box section'and entering said notch,

end portions of larger size, the central portion having its otop and bottom faces formed with spherical seats, the interiorI surface `opposite the lower spherical seat having a depression to form a sump for/lubricant, antifriction bearings r ceived in the enlarged cylindrical end portins'of thebox for supporting a shaft, andend caps closing they and flattened central portion and cylindrical ends of the lbox -and having detachable con- 1 nection with the latter; substantially as described.

In testimony whereof I hereunto aiix my signature. j

JOSEPH G. AYERS.

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