US1685202A - Gear casing - Google Patents

Description

Sept. 25, 1928. 1,685,202

- A. F PITKIN ET AL GEAR CASING Filed Oct. 4, 1924 2 Sheets-Sheet 2 INVENTORS A'ILTORN Y Patented Sept. 25; 1928.

came" stares ARTHUR F. ritrkiiv AND RALPH .9. 15A roR'TE, F SQHENECTADY, meson.

GEAR casino.

Application filed ()ctober 4, 924v Serial m. 741,551. T

Fig. 1 is a partial side view of an electric locomotive equipped with a gear casing em bodying our invention; Fig. 2 is a transverse vertical section thereof showing our vimproved gear casings on both sides of the locomotive; Fig. 8 is a detail section showing the means for attaching the two sections of the casing together; Fig.4 is a detail of a spacing washer; Figs. 5 and 6 are, respectively, per- 1 spcctives of the main inner and outer portions of the casing; and Fig.7 is a .perspec tive of the capor upper half ofthe covering for the motor pinion.

'Our invention relates to the gear wheel casings intended to contain a pair of gear wheels, and has tor its object the production ota gear case substantially oil tighnhf lOW' cost minimum weight, and which may be easily handled during removal or replace 'iment. To this end we have constructed a gear ,case mainly'of sheet metal so related that the gears and shaftingmay be taken down without' requiring the removal of both of the main sections of the casing from its support. Our invention also comprises the various features which We shall hereinafter describe and claim.

'7 Referring to the drawings, the numeral -l,

indicates the motor shaft to the ends of which 39 motor. pinions' 2 are aflixed. Meshing with the pinions2 arethe gear wheels 3 mounted on the ends of the jack shafts 4. Power from the motor 1 is transmitted to the driving wheels through the crank pins 5 on the gears D 3 and the coupling rods 5".

comprises the inner plate 6, the outer cover '7 and the pinion cap 8. The plate6 is, pre-f moval of the ack shaft. This opening when the case is in use is closed by a plate 6 in order to make the casing dust proof and oil tight. The upper portion of the plate 6 has a semicircular recess 6 for the motor shaft '1 The plate 6 is attached to the motor frame by at: 6* oiare plate and are threaded into the The'casing about thepinio'n Q'and gear-3' meansot bolts 9 which'seat inthe bolthol es' frame 15. The plateG is maintained in pro rr ce;

erly spaced relation to the frame 15 byineans of the washers 10, preferably ,made of two pieces-bolted together topermit their ready applicationupon or removal from the bolts Upon either side of the'closu're plate 6*, and substantiallyaat right angles to the: plate 6*, are flanges 6 which form a supporting hearing 'ior'the outer casing 7 and also serve to position it accurately. u The outer casing 7 is of dish shape and has Hilts upper portion atSl DhClI'CulaI recess 7 for the motor pinionQ. The upper edges 7 b or" the recess '7 are flanged to provide a bolting bearingfor the pinion cap 8 A'grooved half ring 7 is riveted at the-outer side of the recess"? for reception of a closing plate 11 which with the outer wall ofthe cap 8 forms a completeclosure around the outer end of V the motor "shaftl. To make the closure oil and dust tight, a feltring 12 secured by a washer 13' may be placed over the outer end of the shaft 1'. The central portion of the C I outercasing 7 is cut out at 7 to make a running fit against'the driven gear collar 3' and forms 3 dust and oil proof jointat this'surface- 7 Secured about the inner edge 7 of the .in g 7 is the'reintorcing ring 7 the outer'edge o'l' which forms an undercut shoulder for the hook bolts 14 mounted near theperiphery of the plate 6- in the holesfi The pinion c ap.8 has a flange 8 shaped to bear against the endxoft-h'e motorjbea-ring' 1'6 and is secured thereto by a .stud passing through the lug 8 The cap Bis also attached to the flanges 7P3of the casing? by bolts extending through its flanges 8. An opening, 8 is provl'd'ed-iii'th'e top of the pinion cover 8 to permit ready inspectionoij the pinion and afford a place to applya lubricant:

1th a gear casing embodying our invendiflFicult-y. To effect this the pinion cap 8 is first taken off and then the bolts 14 areloos ened so as to remove the router casing-,7. N ext the bolts 9 are taken out, the washers 10 disengaged therefrom and the inner bottom plate 6 removed. As the plate 6 is then resting on its shoulder -'6?,'it is next tilted at tion the jack shaft 4 may be 'removed'without its bottom toward the frame 15 until theedge of the recess 6 clears the lower circumterenal edge of the gear collar '3, and then, when 7 the jack shaft has been withdrawn along i, q

aisis to clear frame the o and shaft 4 may be dropped straight downward leaving the inner p1ate'6 suspended from its shoulders 6".

i 7 It will therefore be seen thatthe operation of removing or replacing a jack shaft or gear is extremely simple with gear cases ernbody.

ing our invention, and that because of the simplicity of our improved construction it may be made at low cost and forms as well an extremely effective and reliable protection to gears.

The terms andexpressions which we have employed areused as terms of description and not of limitation, and we have no intention, in the use of such terms and expressions, of excluding any mechanical equivalents of V the features shown and described, or portions thereof, but recognize that various structural modifications are possible within the scope of the invention claimed. What we claim is:

g 1. A gear casing comprising an inner and an outer part enclosing between them a driven a shaft; a gear wheel mounted thereon, having on each side a projecting concentric collar and a housing, enclosing the gear wheel, comrising two members, one member constituting a cover provided with a circular open ing, the edges of which make a substantially oil proof fit with one of the collars ofthe gear, wheel, said member comprising a portion're- 4o movable to provide an opening through which theshaft may be withdrawn cross-axially of the member, the other member having a circular o en-ing, the ed es of which make a sub stantia ly, oil proof ht with theother collar of the gear wheel, said last mentioned member having a portion overlying the rim of the gear wheel, and making a substantiallyoil proof joint with the cover memben I 3. In a railroad-vehicle, the combination of a shaft;:a gear wheel mounted thereon, havwheel, the other member having a circular opening,.the edges of which make a substantially oil'proof fit with the othercollar of the gear wheel.-said last mentioned member hav ing a portion overlying therim of the gear wheel, and making a substantiall oil proof joint with the cover member; one OI the members having a portion removable to provide an opening through which theshaftmay be withdrawn cross axially of the member.

4. In a railroad vehicle,fthe combination of a shaft; a gear wheel mounted thereon, havingon each side a projecting concentric collar, a vehicle frame; and a housing, en closing the gear wheel, comprising two members, one member constituting aicover provided with a circular .opening,the edges of which make a substantially oil proof fit with one of the collars ofthefgear wheel, the other member having a circular opening, the edges of which make a substantially oil proof fit with the other collar ofthe gear wheel, said last mentioned member; having a portion-- tioned member having means adapted to hook ,on to the vehicle frame to support the member during withdrawal of the gear and shaft.

5. In a railroad vehicle, the combination of a shaft; a gear wheel mounted thereon; and a casing, for containing oil, enclosing the gear wheel, and comprising two members enclosing opposite sides of the gear wheel, and encircling the shaft; one of the members having a bottom portion removable toprovlde a space Y through WhlCll the shaft may be moved cross axially out of the member.

ARTHUR F. PITKIN. RALPH RL roars.

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