US2188800A - Double duty snow plow - Google Patents

Description

A. O. WILLIAMSON DOUBLE DUTY sNow PLow Filed April 25, 1958 .PML

Jan. 30, 1940.

Jan, 30, 1940. A o, W .AMSON 2,188,800

DOUBLE DUTY SNOW PLOW Filed April 25, 1958 2 Sheets-Sheet 2 Patented Jan. 30, 1940 IUpuffi-1D, ksrigriries rATENT orf-FICE 14 Claims.

This invention relates f to ea fsnow plow :and particularly toa snow lplow constructed and arranged tov-act .asa plain push plow when the snowisof .small depth and alsoto act as a rotary vt plow when the snow is of great depth.

In .the ordinary practice of clearing roadsif thesnow is'not voffgreat depth a push-plow is used. .Such a plow' has a-moldboard with lateriallyand rearwardly extending curved -surfaces designed to move the snow to the Vsides of the Yroad.zand discharge thevsame fromthe road. .Suchplowszcan be'tmoved-'along the road at com- ,parativelyhigh speedswhen the fall of'snow is not heavy. When the fall of snowis heavy and xthexsnow has accumulated in'y considerable depth uponftheiroadand where drifts of considerable .depths l,have'zformed .it necessary to have .a :power plow .or arotaryyplowtomove thesnow. Such,l powerorrotaryplows. have heretofore been entirely lseparate, units fromfthe push plows and only .brought .into service'when considerable depths of, snow were encountered.

.Asiabovefstated it 4isanA objecty of this. inven-A .tiontogg'provide .a plow'fwhich mightbe called a doublezduty plow .and one constructed and ar- Vrangedto act bothasarpush plow and as a power rotary plow.

It is another object of the invention to provide asnowplow havingra; moldboard with laterally and f rearwardly extending curved surfaces for moving anddischarging; snow if the snow is not of 'great` depth, said moldboard having atfa considerable height and adjacent the `top thereof rotary conveyors which will engage and remove ythesnow if the snowiis ofigreat depth.

1t is a further object of .the invention to-provide a chamber to which the snowis-moved by said conveyors, means for discharging snow from said chamber, a deflector for directing the snow 40 to one side lof the road or the other and-means `for driving said kmeansin opposite directions revspectivelyin accordance with the position of said deflector. c

VYIt is/still another object of the invention to construction adapted to be propelledby a vehicle together with means for vdriving the loperating parts from a Amotor on saidgpropelling vehicle.

These and other objects. and .advantages of the invention will befully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer fto' similar parts throughout the several views and in which: 1

Fig. lis a view for the mostpart in 'front elevavprovide a double duty plow of simple and compact 1 v their outer ends inthe bearings Il.

tion ofthe plow, a portion thereof being shown y in vertical section taken substantially on line l-I of Fig. 3 as indicated by the arrow, a portion of said plow also being broken away;

Fig.r 2 is for the most part atop plan view of f the plow, someiparts being shown in horizontal section taken substantially on line`2-2 of Fig. 3

as indicated by the arrow; y

Fig. 3 is a central vertical section through the l plow;

lcentral vertically extending .line or prow Hic.

Thesurface ofthe portions Illa. and lllb is somewhat curved as indicated bythe outer-end lines in Fig. 2 and thesurfaces of portions lafand l'b are designed to movethe. snow laterally as the. plow is pushed forward intothe snow, the Asnow thus moving outwardly and `rearwardly `along said surfaces until it is finally `discharged atthe `outer end's of said portionsand at one side or both sides of fthe road. Thesurfaces maand. lb extend upwardly for a considerable distance which in practice wouldbe over three feet. At or adjacent the tops of the moldboard portions Ilia and Ib eachportion is` providedwith a rearwardly extendingv substantially semi-cylindrical portion 10d yforming at its forward side, a subf stantially semi-cylindricalrecess or trough'which extends from adjacent the center of the moldboard to the outer end thereof. A casing i we is formed at the central top portion of the-moldboard, `the same having bearings I 0f at either side thereof and bearingsll are providedy closely adjacent the -outerends of the trough-shaped `portions 10d. Shafts I2 are journalled at their inner ends respectively in bearings AIllf and at Said shafts have thereony helical blades VI2a forming' screw conveyors. A casing I3 is provided in the rear of moldboard l0 at the center thereof and said casing has a chamber 13a therein with which the troughs formed by portions 10d communi-j cate.

ber I3a. Each shaft I2 has secured to its inner end a bevelled gear I4. It will be noted that bearings are provided for the shaft at either side of gear I4 and while these bearingsmight be of various forms, in the embodiment of the invention illustrated they are shown as ball bearings. Each gear I4 meshes with another bevelled gear I5 carried on a shaft I8 having bearings in portions of casing Ille and to the central part of which issecured a spur pinion I1. Pinion I1 meshes with a large spur gear I8 forming an idler and carried on a short shaft I9 having bearings at either side of gear I8 in the wall of casing IIIe. It will be seen in Fig. 3 that casingl Ille has a rear wall Ig. A bearing member 28 is suitably secured in an opening in rear'wall Iy shown as having longitudinally spaced bearings fox' a shaft 2|. Shaft 2I has secured to its forward end a bevelled pinion 22 which meshes with a bevelled gear 23 having secured thereto or integral therewith as shown in Fig. 6 a spur pinion 24 which meshes with and drives the spur gear I8. Gears 23 and 24 have stub shafts or trunnions 25 journalled respectively in bearings 26 illustrated as ball bearings and carried in the sides of casing Ille. Shaft 2l at its other end is connectedby universal joint 21 to a shaft 28 which has a splined portion 28a embraced by a short sleeve 29 in turn connected'to a universal joint 38. Universal joint 30 will be vconnected to a shaft extending to or connected to a motor on the vehicle which propels the plow. The parts of the plow will thus be driven by said motor and by the shaft connected to joint 38. Another small gear or pinion 3I is disposed above and meshes with spur gear I8. This pinion has a shaft 32 extending at either sidel thereof and oppositely disposed bevelled gears 33 and 34 are carried on this shaft at either side of pinion 3l. Gears 33 and 34 have hub portions carried in bearings disposed in plates or partitions 35 carried in a casing I 0h which has end sections secured respectively at opposite sides of casing Ille at the upper portion thereof as clearly shown in Fig. 1. Shaft 32 has splined portions at either end on which are slidable clutch members 38 and `31 respectively. Membersv 36 `and 31v have clutch teeth at their inner ends adapted to engage with clutch teeth on the outer ends of the hubs of gears 33 and 34 respectively. Clutch forks 38 and 38 engage in grooves formed in members 36 and 31 respectively andare secured to a rod 48 slidable in bearings in plates 35. Rod 48 has a pin 40a projecting horizontally therefrom and engaged by a fork at the lower end of a clutch lever 4I pivoted at 42 in the top of casing I 8h, said lever projecting through and above said top and shown as having a ball at its upper end. A bevelledpinion 43 meshes with gears 33 and 34 and is secured to a shaft 44 extending horizontally and rearwardly from vsaid pinion 43. VShaft 44 is journalled in spaced bearings illustrated as ball bearings and disposed in a bearing sleeve 45 secured in rear wall Illy. Shaft 44 is connected by a 'coupling 48V to a'shaft 41 to which is secured a propeller 48 disposed in a substantially cylindrical rear portion of casing I3. Casing I3 hasa discharge opening |30 above propeller 48 and has upwardly rextending side portions |327 of substantially triangular form adjacent the top or apex of which is pivoted a deflector 58 .havingA pivot members 5I supported in portions |312'. Shaft 41 is carried in bearings 5I disposed in a bearing casing 52 secured yto thev rear side of the casing'V I3. "I'hebottom portion of casing' Ie'is shown at Ii and bulkhead plates 53 are disposed vertically in the rear of the moldboard beneath bottom plate IUiand at some distance at either side of the central portion of the plow, said plates extending to the rear side of said moldboard. 5

A vertical plate 80 extends transversely of the plow at the rear edges of plates 53. An angle member 54 extends across thebottom of the plow in the rear of the moldboard and has apertured lugs 55l adjacent its outer ends to which push`l0 y bars will be connected. ShoesB-,are also disposed at thebottom of the moldboard at either side thereof and secured to suitable vertical plates 51 having their rear portions turned outwardly as shown at 51a; A frontcentral shoe 58 l5 f is alsodisposed beneath theforward portion of the moldboard and secured to angle` members 54. Apertured lugs 59 are also disposed in the rearr of the moldboard at points disposed some distance above the lugs 55, the same being secured 20 to plates 53 and these will lalso be lconnected to a push barv for propellingthe plow. 'Plates -62rfof general triangular form are provided at each side of the moldboard adjacent the rear thereof and'v are pivoted to pivots 6I secured in plates 51 at l25 the lower front corners thereof. Said plates may be disposed with their lower surfaces horizontal as shown in the full line positionin Fig`.`3 or'they. may be raised to dift'erent'positions by having bolts pass therethrough and through anyonefof-ff30 e the prow Ic.

In operation, `the plowwillbe pushed a1ong-35 Y' the road to be cleared by a propelling vehicle such as a truck or tractorandwill be propelled by push bars connectedto the lugs '.55 andf59. The plow'will ride on the shoes 56 and 584.1 Ulf,A the snow to be cleared is not deep and not overle'o a depth of approximately two or three feetthe plow will be used as a push plow." It will merely be pushed along the road with'shaft 28 not driven. The snow will be engagedfby the moldboard and moved bythe side portions'thereof to'fe45 the side of the road and discharged at the sides of the road. The plow is comparatively light and ,y it'can be moved and used as a push plow at comparatively high speed. Should somedeep snow the plow. The snow will be discharged intov theigo chamber I 3a. As the snow accumulatesin said chamber it will be engaged by the'propeller 48 and discharged at high velocity through opening I3c and will be deflectedl by deflector 50v to'one side of the road. Thesnow will be moved withisucient velocity to be well off the road. Propeller 48 will be driven` in opposite directions depending on the position of the deector 50.

With the deflector' shown in the full line position in Fig. 5 the propeller will move inja'clock- '70 wise direction. If the` deflector ismoved tothe dotted line position in Fig. 5 the propeller will be driven in a counterclockwise direction. Y. The direction of drive of propeller .48 will be deterf mined by which' one of the' gears 33 or sais con-'75 manipulating'lever 4l. It will be notedthat the s lsnow isy discharged to either sideof the road in Vexactly the same manner and with 'the samel force by having thedeflector 50 in one position or s l s yarfssgsoo nested` to the shaft' by engaging the clutch-memthe other. y y

. It willA be understood that as the plow is pushed forwardly thel snow is encountered and f divided r'by the-prowl-portion or plate ilicvand the lower` shoev 63. The/snow thenA movesjrearwardly on the portions vIlla. and. Mb. The `plates GZUfare provdedso that thel snow willybe cut yatfthe .frearand outersides of the moldboard. As deuse of the plates a clean cut and a substantially "verticalror slightly inclined bank 'is' insured.

scribed these plates may be raised to diierent positions. By cutting the snow with these plates s ya clean swath is insured. `Without said Aplates ,the router end of the moldboard would merely scrape along the snow and the vsnow would be broken and left in irregular formation.` By the changes may be made in the form, details, ar-v s rangement and proportions of the parts, without departing from the,I scope of applicants invention, which generallyv stated, consists in a device capable of :carrying out the objects abovek set forth, Ain the parts and combinationsvor parts disclosed and defined in the appended claims.

What is claimed is: l. A snow plow having a mold board extending outwardly and rearwardly from a central vertically extending line',`sai`d moldboard extending upwardly for a` considerable distance whereby .l

' said moldboard' if it is of` great depth and means for driving said conveyors; y

2. A ysnow plow having a moldboard extending outwardly and rearwardly from a central vertically extending line,l said moldboard extending upwardly for afconsiderable distance whereby snow of small' depth may be discharged laterally by said moldboard,said moldboard having rearwardly extending substantially semi-cylindrical re-l cesses adjacent its top and rotary conveyors disposed in said recesses and projecting somewhat therefrom for engaging andmoving snow ii itis of great depth and means for driving said conveyors, y

3.` Asnow plow having a moldboard with surfaces extending outwardly and rearwardly, said f. moldbcard extendingupwardly for a consider-y able distance wherebyjsnow yof small depth may ,be discharged laterally by` said moldboard and rtary conveyors having helical blades thereon disposed adjacent the top of said moldboard and ex-l tending outwardly andy rearwardly from the cen- `-tral portion thereof for engaging and moving snow if itis oigreat depth and means for driving" said conveyors.1

y ing.

'4. 1A snowjplowf-having a-nioldboardwith surthe front "thereoi, said moldboard extending upwardlyiora yconsiderable distance whereby snow ofl small depthinay be discharged laterally by said moldb'oardgsaid moldboard having recesses at its top extending rearwardlyv therein, bearings adjacent the ycenter of said moldboard and at the outer endsfthereof, shafts ljournalled in said bearings and extendingl from adjacent the' center of said moldboard laterally and rearwardly, lar'i-drhelical'blades carried by said shaft disposed partially in (said recesses -and means for driving rsaid conveyors for engaging and moving snow toward the center of4 said moldboard if said snow is 'of great depth.

5. A snow plow lhaving a moldboard extending outwardly and rearwardly through the center thereof, said `moldboard extending upwardly for j a vconsiderable distance whereby snow of small depthmay be' discharged laterally by said moldboard, a casing having a chamber therein at the central top portion' vof said moldbo'ardand at the rear thereof, conveyors extending along 'the' top of said lmoldboard at either side thereof for engaging and moving snow if it is of great depth, means for driving said conveyors for moving said snow inwardly and discharging the same in said chamber.` 1

6. The structure set forth rin claim 5, said faces extending youtwardly and-rearwardly from chamber having `a discharge opening at' its top,

a swinging deflector adapted to bev disposed in opposite, positions and means =in said chamber for propelling snow therefrom through said openupwardly for a considerable distance whereby snow of small depthl may be discharged laterally moldboard extending outwardly and rearwardly along the same, .helical blades forming conveyors carried by 'said shafts, a chamber in the rear of said moldboard, means for driving said shafts for engaging snow by said conveyors and moving the same into said chamber if said snow is of great depth, a shait adapted to be connected to a motor on a propelling vehicle for said plow, gears secured to said rst mentioned shafts, and gears driven by said last mentioned shaft for driving said first mentioned shafts and conveyors.

8. A snow plow having in combination, a moldboard for discharging snow outwardly and laterally, said moldboard being of considerable height, conveyors atthe top of said moldboard for engaging snow if it is of great depth, a casing in the rear of said moldboard at the top thereof havving a chamber therein to which snow is moved opposite directionsv respectively in accordance with the position of said deector.

` 9. -A snow'plow having a moldboardextending outwardly and rearwardly from acentral ver'- tically extending line, said` moldboard extending upwardlyfor a considerable distance whereby snow of small 'depth may be discharged laterally by said moldboard, a pair of rotary conveyors disposed adjacent the top oi said moldboard and ex- ',40 by said moldboard, shafts adjacent the top of said tending longitudinally of said mold board lin oping upwardly for a considerable distance wherev by snow of small depth may be discharged laterallyby said moldboard, a rotary conveyor disposed adjacent the top of said moldboard and extending along the same substantially parallel to the surface thereof for engaging and moving snow if it is of great depth and means for driving said conveyor. l

11. A snow plow having a moldboard extending outwardly and rearwardly from its central portion, plates extending in a substantially vertical plane at the outer sides of said moldboard and adapted to out through the snow to form a regular bank at the edge of the swath madeA by said plow, and means for holding said plates in differmade thereby,

12. A snowplow having a moldboard with a means for Idriving said conveyors.'

surface extending laterally and rearwardlyzfrom its central portion along which the snow ismoved to the outer side of said moldboard, la cutter member extending in a plane at the outer side of said moldboard inclined slightly to vthe vertical, andai;l

means for varying the positionA .of said cutterV` so that a cut of greater or less depthisvmade; i 13. A snow plow yhaving a mold board extending outwardlyan-d rearwardly from a central vertically extending line, said nfioldboayrd'extendingkfl()y upwardly for a considerable distance whereby snow of small depth may be discharged laterally v by said moldboard and rotaryconveyors"dis-- posed adjacent the top ofsaidmoldboard but?.

below the top edge thereof and ei'rterio'llnflg,"along"V1 said moldboard in opposite directions respectively for engaging and moving snow along said` 4 mold board if said snowis of great "depth and 14. The structure set forth in claim 13, said`VV moldboard at its top kextending aboutfthe; rear of said conveyors and partially over thetopttherel* i of, f y ARCHIE O". WILLIAMSON@

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