US1748521A - Gear case - Google Patents

Description

Feb. 25, 1930. T. H. OPPENHEIM ET AL GEAR CASE Filed July as. 1927 2 Sheets-Sheet 1 m Op benkeim Bern aroZ ,fi'ezkoral? Feb. 25, 1930. 'r. H. OPPE/NHEIM 1-:1' AL 1,743,521

GEAR CASE Filed July 28. 192'! z snooty-Sheet 2 0 1? enheim Ber-nail aezzmmt rnnoiionn Ann BERNARD I sE niroRsT; coLDwATER, onto; j I

'SIGNORS TO THE new IDEA SPREADER 00., or connwA'rnit, onro, A oonrorm rron a access of dirtand other foreign matters and will be permitted to operate in alubricant.

' Patented Feb. 25, 19 30 GEAR CASE.-

=Appli cati on filed my 23, 1927. Serial no. 2419344,.

7 This inventionvhas for its objectthe provision of a simple and efficient device whereby a train of gearing will be protected against The invention is dsigndprimarily use ,upon corn -husking machines to house the gearing connecting the upper ends of snapping rollsbut it'may be'employed advan 1 p tageously "in other fields wherever" it is applicable. One embodiment of the invention isillust rated in theaccompanying drawings and will be hereinafter fullyides'cribed, the novel features being subsequently particular- 1 5 lypointed out in the appended claims; I

Q25 and 1 e Fig. 5 isa detail section on the" line 5-f5of In the drawings, the reference numerals 1 v vention 1n the drawings:

' Figure 1 is a plan view of a gear case constructed in accordance with our present in- Fig. 21is an end view partly broken away; Fig. 3 is a Vertical section taken substantially upon the line 8+3 of Fig. 1; i

i Fig. 4t is a view, partly bottom plan an I partly in section, on the line of Fig. 3,

'iand .2;respe'ctively indicate frame bars of .a g

corn-husking machine, the bar 1 being at times referred to,,for convenience, as the up per bar and'the bar 2 being designated as the lower bar. 1 clhebars 1 and 2' are'arranged in pairsatthe sides of the machine and-converge toward their u-pper ends whichare connected by gusset plates 3fwhich extend upwardlybeyondtheframebars, as shown clearly'in Fig i -2, avery strong and rigid' vstructurel being thereby attained. The upperend of each gusso set plate is constructedwithla lateral flange and below the upper extrem tyof the upper 7' frame bars 1 across bar 5 is secured to and extends betwe'ensaid bars, the cross barbeing Z preferably in the form of an angle bar having its de ending fiangeccut away at; its ends where y it may fit to and extend. over the v edges of the gusset plates and rest upon the frame bars 1. The snapping rolls indicated at 6, are arranged'in pairs andare equipped 115.with trunnions 7 which pass through journal boxes 8, the said 'journal boxes being fitted a yoke 9' which extendsacross and rests upon the cross bar 5, the yoke being secured in place by being bolted tojthe said cross bar and to the flanges ofthe framelbars 1; Power isapplied to the lower end of the inner roll of V each pair of rolls and this roll maybe considered'as a driving rollwhile the outer roll of each pairmay be considered as a driven roll, the journal box through which the trun men of the driven roll passes being slidably supported in the yoke and yieldably held at f the inward limit ofitsinovement by means which are well known to those skilled inthe art.. The trunnions of the snapping rolls are operatively' connected through trains .of geargears 14 and 15 upon the respective stub shafts, one of the stub shaftshavinga gear '16 which. meshes with the gear lt'up'on the I mating stub s'haft so that the motion will be transmitted from the driving to the driven roll while at the same time permitting the relative sliding movement of the driven roll. The particular pur'poseo'f the present inven tion is'to provide a case which will house the trunnions stub shafts and gearing and permit them to be submergediin lubricant'so that vthey will operate easily and eflectuallyatlall times, the constructionof the case being such that it will not add very materiallyl't'o-the *dead weight ofthe machine and it maybe readily mounted upon the machine to sup portthe stub shafts'and the idler gears carg ried therebylat a comparatively low co'st.

Inv constructing the gear case, we employ a bottom 17- which is preferably a casting having a-flange 18 extending entirely around its margin and constructed adjacent its "ends with longitudinalslots 19, receiving the trunnions oft-the relatively movable rolls. The

bottom is, of course, provided with openings to accommodate the trunnions of the drivin rolls and alsotheliends of the stublshafts 10 and 11' which project therethrough. and

may be equipped with integral s0ckets .or

entirely covered flange of the cross bar 5 and bears against and extends between the gusset plates 3 and suit 'able bolts are inserted through the bottom and the flange of the cross bar 5' as well as through the flange of the bottom'an-df'the' gusset plates to secure the bottom plate rigidly in place. The bottom plate is also provided with an integral elliptical rib 21 on its inner or upper side which is disposed coincident with the slot 19 and rising from the bottom to an extent approximately equal to the length of the trunnion 7 which extends into the case, as will be understood upon reference to Fig. 3. This construction amply accommodates the relative lateral movement of the trunnion of the outersnapping roll and at the same time provides a support for the trunnion which will counteract any tend- 'ency of the same to bend within the gear case while in use.

Furthermore, it removes the upper or inner opening to a point within the gear case so that the. lubricant therein cannot pass out through the bottom of the case and the case may be filled to a level very nearly the same as the highest point reached by any of the gears. It is desirable to prevent flow of lubricant to the slot 19 as the trunnion shifts therein and exposes part of the slot and for that purpose we provide a sealing plate'22 which is fitted to the upper extremity of the trunnion immediately adjacent the hub of the gear secured thereon, and this sealing plate rests upon and slides on the upper edge of the rib and is of such extent that the space within the rib will at all times be and, consequently, the lubricant cannot escape through the rib and be lost.' Fitted close within the marginal flange 18 of the bottom 17 are side and end walls which are preferably constructed of sheet metahto reduce cost, and these side and end walls consist of a lower member 23 and an upper member 24 each of whichis a flat plate having its ends bent at a right angle to its greater length, the ends overlapping when the side and end walls are placed in position and being firmly bolted together. These side and end wall members are of such dimensions that they will fit snugly within the marginal flanges 18 and they are secured to the gusset plates by the same bolts which secure the said flanges to said plates. The top of the gear case consists of a lower section 25 and an upper section 26 both of therethrough corresponding in position and arrangementto the location of the stub shafts carrying the gears 14, 15 and 16 and thereby serving to retain the said shafts and their gears in operative positions. The upper section 26 of the top is provided around three edges with a flange 27 fittedabout the upper side and end walls 24 so that the said section 26' may be readily placed in its proper p.osi.- tion, the flanges being slightly cut away or shortened at their extremities to 21CC0111II10- date the flanges of the gusset plates and the projecting ends of the lower sections 25,

as shown-in Fig. 2. 'The lower edge of the placed in the case is avoided, and to retain the parts in the proper position under cut lugs or brackets 28 are provided on the inner' side of the said section 26 adjacent the lower edge thereof to engage under the upper edge of the section 25,-also asv shown in Fig. 3. To secure the section 26 in its position, a rig-[ht angle bracket or projection 29 is proviC ed on the top of the wall member 24 and a similar projection orbracket 30 is rigidly secured'to the upper side of the said top section 26, openings being formed through the mating extremities of these brackets to receive a bolt 31 on which is mounted a wing nut 32 adapted to be turned home against the adjacent bracket. The top section 26 is thus securely held-in place but it maybe easily removed-when necessary to inspect the" gearsor to replenish the supply of lubricant.

' l/Vhile the ellipticalrib 21 provided around the slot 19 serves as a means for limiting '7 the movement of the trunnion passing therethrough, it is desirable to provide additional 'means for limiting the relative outward movement of sald trunnion and for that purpose we form on the under side of the bottom 17 a lug 33 immediately adjacent the outer end of the slot 19, as shown most clearly in Fig. 4, so that when the trunnion moves outwardly it will abut the said stop lug, the strain upon the spring which normally holds the trunnion in its inner position being thereby relieved andthe possibility of fracture occuring in the rib 21 being reduced.

From the i'oregoing descriptlon', taken 1n connection with the accompanying drawings,

it will be seen that we have provided a very simple gear case which will effectually house the gearing connecting the upper ends of snapping rolls and effectually protect the same from damage'through chance blows while preventing the access of dirtand other foreign matter thereto and which gear case can be produced and applied at a low cost. The device is especiallyadvantageous because it will permit the trains of gears to be almost entirely submerged in lubricant.

the slot therein. 60

Upon reference to Fig-.3; will noted 7 that the highest pointion the highest gear f 13 is only slightly above the-horizontal lane of the joint between the upper and ower sections of the topof the case and, consequently, the case may befilled with lubricant to almost its complete capacity, it beingundcrstoodthat the lubricant is what is known as a hard oil-0r grease which will not jflow like'li quid and,iconsequently, will not readily. seep or leak through the joint between the upper and lower sections of the side and end I Walls. This joint, furthermore, maybe made practically tight by turning home the nuts on the securing bolts so'that: any leakage which may possibly occur will be so slight as to be negligible. 'While the lubricant is being placed inthe' case, the upper section 26 of the top is, of course, removed thereby 20V exposing the space above the lower top "sec- Mon-25, and the lubricant is 'filled into the i case through this openspace. 'After the case has been fi led withther lubricant, the section 26 is, of course, replaced and secured. K Themannerin hmh the gear case issecured to the several elements of the supporting frame holds it very eifectuallyin its proper place and resists vibration in a highly elficientmanoner so that distortion of the case through use is not apt to occur and the trains of gearing will be always in proper mesh and W111 opr crate readily without binding strain.

Having thus described the invention, 'we

claim :1. The combination with a driving. 1-0- tatable element, a driven rotatable element 7 movabl-ebodily toward and from the driving element, and a train of gears operatively connecting said elements, of a casehousing said elements and'said gears" and havlng a element passes,"an elliptical rib on the inner surface of the slotted side of the case coincident with the slot-,and'a sealing plate inner edge of said rib.

slot in one side through which the driven carried by thedriven element and extending entirely over and slidably resting on the posed between-the gusset plates and resting upon and secured to said cross bar and bearing at its ends against and secured to the I gusset plates, side and end walls resting on 7 said bottom and secured to the same and to theqgusset plates, a top including a lower.

section resting o-nthe upper edges of the side and end walls and the upper ends of the gussetplates and secured to thegusset plates and an upper section resting on the upper edges of the side andend walls with its lower openings above the crossbar to receive other rotatable elements whichare supportedbyi thecross bar. v p The combination with a driving rotatable element, a driven rotatable element movable bodily toward and fromthe driv-' ing element, and a train of gears operatively connecting said elements, of a case housing said'elements and said gears andhaving a slot in one side through which the driven:

elementpasses, and anelliptical rib on the inner surface of the slotted side of the case coincident with the slot.

- In testimony whereof we affix our signatures; o p THEODORE H..OPPENHEIM. a s.] BERNARD SELI-IORST. [L.S.]

* 2. The combination with a driving ro-,.

.g j'tatable element, a driven rotatable element v ing element, and atrainof gears operatively movable bodily toward and from the drivconnecting saidelements, of a case housing said elements and said gears and-having a g slot in one side through which the driven element passes, a sealing plate carried by said element within the case and covering said" slot, and-a stop on. the outerJsurface of the g slotted side of the case at the outer" end of v n 3. ,The combination of pairs of frame gusset plates each secured to the meeting ends of the bars of one 'pairof bars and ex-,

' V tending upwardly beyond the same,-a cross bar securedupon andextending between the upper bars of the pairs of bars, a bottom disbars,

Images