US2241252A - Snowplow with power discharge - Google Patents

Description

.M. GARLAND ETAL 2,241,252

sNowPLow WITH POWER DISCHARGE Filed Dec. 13, 1939 6 Sheets-Sheet 1 May s, 1941.

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M. GARLAND ET AL.

SNOWPLOW WITH POWER DISCHARGE I Filed Det:r l5, 1959 5 Sheets-Sheet 2 Innen/Z073 Ma/M May 6, 1941. M. GARLAND ErAl.

` v sNowPLow wITH POWER DISCHARGE Filed Dec. 13, 1939 6 Sheets-Sheet 5 Zia/avviata' ormeys May 6, 1941. M. GARLAND ETAL v sNowPLQw WITH POWER DISCHARGE Filed nec. 13, 1959 6 Sheets-Sheet 4 zorneys M. GARLAND ETAL.

SNOWLOW WITH POWER DISCHARGE May 6, 1941.

Filed Dec. 15, 193s e sheets-sheetrs M. GARLAND ET Al..

SNOWPLOW WITH lPOWER DISCHARGE Filed' Dec. 13,V 1959 May 6, 1941.,V 2,241,252

6 Sheets-Sheet 6 i tgli Mi ....Hie

Aomeyg Patented 'Msi s, 1941 sNowrLow wrm rowsa DISCHARGE Mather Garland, Mound, and Edward Russell Greer, Wayzata, Minn.; said Greer assignor to Imperial Machine Company,

Minneapolis,

Minn., a corporation of Minnesota; said Garland assignor to Roto Wing Company, Mound, Minn., a corporation of Minnesota Application December 13, 1939, Serial No. 308,976

11 Claims. (Cl. 37-43) lThis invention relates to plows of the general type disclosed in our U. S. Letters Patent, Number 2,199,723, issued May 17, 1940, entitled "Snow plow structure.

In saidpatent a snowplow adjustably connected with av propelling vehicle and positioned to overhang the side and shoulder of a road, and provided at its outer end with power discharge means for ejecting snow and other material outwardly for a considerable distance, was disclosed. 'I'he power discharge means in the form of a bladed rotor was driven from a source of power on the vehicle, such as the power take-l off of the vehicle motor, and driving connections were made between said source and the rotor to certain driving connections mounted on the plow itself, and other connections .which were disposed axially of the adjustment or connection pivot for the plow at the forward end thereof. 'Ihe blade or mold board of the plow was adjustable for elevation within certain limits at its forward end as well as at its rear end, and was further adjustable, swingably on a horizontal pivot to vary the inclination thereof to the horizontal, as -well as being adjustable for various angulations relative to the line of travel of the propelling vehicle. To drive the power discharge means in the various adjusted positions of the plow required flexibility and adjustability in the driving connections and successful driving connections for permitting adjustability of the plow within somewhat restricted limits, were provided.

It is an object of our present invention to provide a substantially improved plow for moving snow and other material from the side of a road of the general type disclosed in our said patent, and one having a wider adaptability to various plowing to enable a high snow bank to be cut or .material to be back sloped, /or to Work considerably below the level of the road overthe shoulders or in a ditch, as well as to work eiliciently for A general leveling or widening purposes.

In this connection it is a further object to provide in conjunction with such a device, highly emcient driving connections between a source of power on a propelling vehicle and the power discharge at the outer end of the plow, ywhereby power and having thereon an element or elements which must be driven in the many adjusted positions of said member. In this connection it is an object to provide such driving connections extending between the source of power and the adjustable member 'having associated therewith focusing mechanism controllable by the shifting of said member to properly shift and direct elements of the driving connections for highly efcient driving of the driven device in all adjusted positions of the member.

It is a still further object to provide a plow of the class described having a substantially improved construction of mold board, cutting edge,

' and rotor funnel, whereby in the plowing action snow or other material is flrst rolled outwardly and rearwardly of the plow and then lifted to a funnel or truncated conical portion at the outer end of the mold board where the rotor is mounted.

A further object is the provision of a simpliied plow of the class described having substantially greater adjustability for various types of work, lighter in weight, but nevertheless of stronger and more durable construction, and the entire operation and adjustment of which is controllable by the driver of the propelling vehicle.

Still another object is the provision in combination with such a snowplow of a skid shoe cooperatively associated with the mold board to overcome the natural tendency of the plow to tilt or dig due to the work imposed.

These and other objects and advantages of the invention will more fully appear from the following description made.in connection with the accompanying drawings, wherein like reference characters refer to the same parts throughout the various views, and in which- Fig. 1 is a front perspective view showing an embodiment of our improved plow operatively attached to the side of a propelling vehicle, and positioned for leveling or .widening work;

Fig. 2 is a rear perspective view of the same,

the dotted lines indicating the raised or inoperative position of the plow;

Fig. 3 is a perspective -view similarv to Fig. 2,

with the-plow adjusted to a substantially ele-- vated position for cutting a rather high bank;

Fig. 4 is a similar perspective view showing the plow adjusted for back sloping with its rear end considerably elevated;

Fig. 5 is a rear perspective view looking along the length of the mold board and cutting edge of the plow, with the discharge rotor detached;

Fig. 6 is a view mostly in rear elevation with the plow and thrust beams shown in section and illustrating the hoist for the rear end of the plow, as well as the connection of the plow at its intermediate portion with the propelling vehicle;

Fig. 7 is a detail view partly in front elevation and partly in section, showing the connection of the mold board at its forward end with I the propelling vehicle and the mountings permitting the various adjustments thereof;

Fig. 8 is a section taken on the line 8-8 of Fig. 7, showing the front slide and pivotal mounting for the mold board;

Fig. 9 is a View partly in top plan and partly in horizontal section, showing the driving connections between the source of power and the discharge rotor and its associated mechanisms;

Fig. 10 is a top plan view showing the driving connections for the rotor and the thrust rod connections between the plow and vehicle when the plow is positioned as shown in Fig. 2, and

Fig. 11 is a. similar view with the plow in the position of adjustment shown in Fig. 4.

The embodiment of our invention illustrated vis shown attached to the `right-mnd side of a heavy truck. although it will, of course, be understood that the invention is applicable to any propelling vehicle such as' a tractor, a patrol grader, or other vehicle.

Our plow comprises an elongated mold board, designated as an entirety by the numeral I5, and having a sharpened cutting edge I6, detachably secured to the lower edge thereof. The mold board I5 is supported from the propelling vehicle and is mounted for substantially vertical tween the vehicle and the intermediate portion' of the mold board. y

AThe mold board I5," in its angled position relatively to the' truck, is constructed to roll the snow or other material plowed, outwardly and longitudinally thereof in the plowing action for some considerable distance, and to then produce an upwardly lifting action on the material at its rear portion, lifting the material into a flaring or funnel-shaped construction I5a in which a high speed discharge rotor Il is mounted. To this end the lower edge of the mold board at its forward end is positioned in slight inclination to the vertical, as is the case of the cutting edge I6. Both the cutting edge and the lower edge of the mold boardv Vary in pitch throughout their length, the rear portions thereof being inclined only slightly to the horizontal to produce the lifting action for effectively feeding material into the funnel portion I5a and into the axial portion of the rotor. The axis of the rotor extends substantially longitudinally of the main and forward portion ofv the mold board, although it passes through the rear peripheral wall of the funnel portion lia. The variable pitch in the lower edge of the mold board and in the cutting edge I6 may be observed from an inspection of Fig. 5.

The mold board has at its forward end a rigid attachment tongue lib in substantially vertical position. which is connected for swinging upon a heavy, substantially horizontal pivot I8, said pivot being carried by a swingable, horizontally disposed bracket I9 (see Fig. 8) which is swingably connectedat its inner end with a vertical pivot bolt-20,pivot bolt 20 being mounted on outwardly projecting arms 2Ia of' a vertical slide member 2I mounted in a substantially vertical guide or mast 22. Slide member 2|, and with it the forward end of the mold board, is supported and its adjustment controlled by means of a suitable windlass, not shown, connected with the pivot bolt 20 by means of a flexible member including a cable 23 having its end connected with the eyed end at the upper end of pivot bolt 20. 'I'he windlass -is driven and controlled manually or from suitable power means controllable from within the cab of the Vtruck or vehicle.

As shown, the mold board I5 is braced in its angular position relatively to the side of the vehicle by means of, a pair of adjustable push poles or thrust beams 25 and 26. These push poles 25 and 26 preferably are constructed of adjustable telescoping sections and, as shown, the upper push pole 25 has the tubular section 25a telescoped on the rear rod section 25h and adjustably connected therewith by a heavy pin 25c which is adapted to be inserted through registering apertures in the two telescoping parts. Likewise, the thrust pole 26 has the outer tubular section 26a telescoped on the inner rod section 26h and adjustably connected therewith through the medium of a pin and hole connection 26o. The lower thrust rod, as shown, has a cushion spring 21 .interposed between a headed stud member 28 which is pivotally connected with a heavy back bracing member 29A secured to the back of mold board I5.- 'I'he outer end of the tubular section 25a of the upper push pole is also pivotally connected with the re- .enforcing member 29 and the inner ends of the push poles are pivotally and substantially universally connected through joints 25d and 26d, respectively, with the movable member or piston 30 of a hydraulic hoist supported from the adjacent side of the propelling vehicle. The piston30 slides along a pipe 3| of the hoist, raising with it the push poles 25 and 26.

The rear end of the mold board is supported and'adjusted by means of a driven windlass associated with and synchronized with the said hoist, and connected with a reenforcing rib AI5rextending longitudinally at the rear and lower portion of the mold board by fleible means such as the cable 32 having connected to the end thereof the chain 33 which is adjustably secured to the mold board. 'I'he cable 32, as shown, passes over a pulley 34a mounted in the outer end of a swingable arm 2l which is supported from the mounting for the hoist and is braced by a diagonal brace rod 35 pivotally connected with the outer end thereof, and having its lower end mounted on a slide member 36 slidably mounted on the tube 3l of the hoist and limited in downward movement by a suitable abutment. 'I'he slide member 36 in the upward movement of piston 30 of the hoist is engaged thereby at a certain point and lifted, raising the arm 34 to the `elevated position shown in Fig. 3 upon further upward movement of the piston. The winding of the windlass, operation of the hoist, and raising of the arm 34 are so related as to properly correlate the operation of the push poles and the swinging elevation of the' rear end of the mold board on its horizontal pivot I8 to enable the plow to be adjusted through a very wide range of positions, and when the plow is not in use, to enable the same to be disposed in `the extreme upwardly swung position against the side of the vehicle, as shown in dotted lines in Fig. 2. The back of the mold board, in addition to the longitudinally extending triangular formation |51' at its lower portion, is reenforced by an upper longitudinally extending rib |s, by the transversely disposed heavy backing member 29 and cross ribs |5t, and the funnel portion at the outer end of the mold board is additionally reenforced by a longitudinal rib |5u rigidly connected with a casting |50 extending transversely of the mold. board and furnishing also a bearing` for the discharg rotor. f

The discharge rotor, indicated as an entirety by the numeral I1, comprises a hub or rotary sleeve |1a mounted in suitable roller bearings upon an oscillatory sleeve 31, which sleeve extends at an acute angle through the reenforced. central part of the funnel portion |5a of the mold board more or less longitudinally of the main portion of the mold board, and is journalled in a stationary sleeve 31a rigidly connected with the mold board. To the hub |111 is secured an outer sleeve member |'|b for the rotor, having attached thereto a plurality of variable pitch discharge blades |1c. The sleeve |1b has its outer end extending beyond oscillatory tube 31 and is connected by a shear pin Hd with a cup-shaped driven member 1e, said cup-shaped member being non-rotatively connected with the driven axle or shaft of the rotor |1f. It will be noted that the arrangement of the blades |1c of the rotor is such that the blades flare outwardly, conforming to the general shape of the funnel portion |5a of the mold board and being so related thereto that material plowed is lifted by the backwardly sloping portion of the cutting edge of the-mold board into the axial portion of the discharge rotor and discharged longitudinally and outwardly of the plow rather than upwardly. The rotor, as

to assist in discharging material moved to the rear funnel portion of the mold board and to efficiently feed material into the discharge rotor.

A skid shoe 39 for engaging the road or the upper strata of material above which the cut is made, is secured to the outer end of mold board i5 adjacent the lower edge thereof and extends rearwardly thereof. The shoe is rigidly attached, but may be adjustably secured to lthe heavy reenforcing rib |51'. l

From the foregoing description it will be apparent that the mold board is mounted for a variety of adjustments within wide limits. For cutting a high bank the forward end may be elevated by fraising the slide 2| considerably above the position shown' in Fig. 3, while the rear of the plow may be elevated and swung oscillation thereon,

upwardly on the horizontal, forward pivot pin I8, and the piston 30 of the hoist elevated in synchronization with the winding of the elevating cable 32. On the other hand the forward end of the plow may be lowered to the groundv line, as shown in Fig. 2, and the rear end lowered to a position several feet below the level of the road on which the truck travels, as, for example,

vinto a ditch at the side of the road. Also the angulation of the moldboard with respect to the side of the vehicle may be materially changed by adjustment of the push poles 25 and 26.

The discharge rotor is preferably driven from a source of power on the propelling vehicle such as a power take-off, and the driving element 4| of the power take-off, as illustrated, is disposed some distance rearwardly of the forward connection of the mold board, extending, as shown, transversely of the vehicle and at the rear of the cab. To drive the rotor eillciently in all the widely varied adjustable positions of the mold board, required semi-universal driving connections of a novel and improved construction. To this end we have provided driving connections cooperatively associated with driving connection focusing means to assure proper relationship of the driving shaft, drive connections, power takeoff, and rotor, through all said adjusted positions of the mold board. The power take-of! shaft 4| (see Fig. 9) for driving rotor I1, as illustrated, is suitably connected (not shown) with the vehicle engine or, if desired, with a separate motor or engine supported on the vehicle. Transmission mechanism is provided at the outer end of power take-ofi' shaft 4|, including a stationary cylindrical housing 42 rigidly secured, as shown, to the heavy covering sleeve 4| a which surrounds shaft 4|, and having mounted therein in suitable bearings a stub shaft 43 which is connected for driving with power shaft 4| through the medium of bevel gears 43g and 4|g, respectively, the gear 4|g being fixed to the outer extremity of power shaft 4|. Housing 42 has connected therewith, for a transversely disposed transmission housing `44, as shown, of closed cylindrical shape. Oscillatory housing 44 is secured to a flat annular member 44a which acts as a turn table in conjunction with an annular flange 42a at the connected end of stationary housing 42. The iianges 42a and 44a, as shown, are connected to permit relative oscillation by a channeled connection ring 45. The stub shaft 43 of the transmission mechanism extends into the oscillatory housing 44, a suitable bearing 4 being provided at the end of housing 42, and is Transmission mechanism for the rotor is mounted onv the mold board l5, supported from the reenforcing casting |5v with'the assistance of the oscillatory sleeve 31 in which the driving axle I'Lf of the rotor is housed. The rotor transmission mechanism is mounted in a closed cylindrical housing 48 which is detachably and rigidly connected by bolts 48h with the outturned flange at the outer end of oscillatory sleeve 81, which houses the rotor driving axle I1f. Within transmission housing 48 and journalled in efficient bearings at either end thereof is a relatively large bevel gear 80, the inner end of which is nonrotatably connected to the nd oi rotor driving axle 31. A detachable housing plate 48a renders accessible the interior of the oscillatory housing 48 as well as bevel gear 50 and its bearings. Oscillatory housing 48 has xed thereto an extension or smaller auxiliary casing 5I of cylindrical shape disposed in the manner shown in Fig. 9, and having its interior in communication with the interior of housing 48. A stub shaft 82 journalled in suitable bearings adjacent its ends is mountedi axially of the auxiliary casing 5I and has afllxed thereto a small bevel gear 52a meshed with the bevel gear 50. The stub shaft 52 extends through the outer end of casing 5I and carries or has aiilxed thereto a driving connection element 53, as shown in the form of the yoke element of a. universal connection. Driving connection element 53 is connected with the driving connection element 41 of the transmission mechanism at the side of the vehicle by a longitudinally extensible drive-shaft 84. In view of the very wide adjustability in the positioning of mold board I5, we employ several telescoping drive shaft sections, as shown, said sections being three in number, the outermost 54a being pivotally connected through a projecting tongue 54t with the wrist member 53a of conventional form in the universal joint or driving connection element 53. Within drive shaft section 54a. the intermediate section 54h is telescoped and within section 54b the inner drive and 48 located at the side of the vehicle and on the mold board, respectively, are oscillated auto- -matically by focusing mechanism during the various shifting movements or adjustment of the mold board I5 to at all times and in all adjusted positions, cause the universal joints or driving connection elements 53 and 41 to be properly related and positioned with reference to the connected ends of the drive shaft for eflicient driving. In the embodiment of the invention illustrated, which is an actual full-sized, working device, built and put into use, the angulation between the drive shaft and said drive connection elements 53 and 41 never exceeds 15 de grees, and in most positions of the mold board the said elements, drive shaft and stub shafts 46 and 52, are very close to axial alignment.

Our said focusing mechanism for maintaining effective relationship of the said driving connections comprises a longitudinally extensible focusing arm 55, as shown, comprising two telescoped sections 55a and 55h ext-ending between the oscillatory transmission housing 48 on the mold beard and the oscillatory transmission housing 44 on the side of the propelling vehicle. The focusing arm sections 55a and 55h are mounted for relative oscillation and they extend in side by side, but often-times non-parallel, relation with the drive shaft 54. The end of the inner or tubular telescoping section 55a is eccentrically connected by a short 'torque' sleeve 58 with the turntable 44a of the oscillatory transmission housing 44 at the side of the vehicle, said connection being permissive of oscillation of torque sleeve 58L in housing 44 and, as shown, detachable. The end of the telescoping section 55h is eccentrically connected by a similar torque sleeve 51 with the oscillatory housing 48 mounted on the mold board.

Operation In operation, our plow. including its driving connections and related parts. is supported and propelled from a power driven vehicle, the mold board extending in the various plowing positions a considerable distance beyond the side of the vehicle and in many operations overhanging the shoulder and ditch at one side of a highway. In some installations of our plow construction, particularly when mounted on the lighter types of propelling vehicles, it is desirable to ballast the truck or vehicle body on the opposite side from that supporting the mold board. The angulation of the mold board I5 in a rearward and outward direction relatively to the longitudinal center line of the vehicle, causes snow or other material plowed to first be moved with a rolling action upon the forward and medial portions ofthe mold board, which rolling action is accentuated by the upstandlng forward portions of the cutting edge I6 and lower edgeof the mold board. The variable pitch of cutting edge I6 and its twist from substantially said upstanding rela-Y tion at its forward end to a slight angle with the horizontal at its rear portion, causes the material to slide and to be forced upwardly into the mold board funnel I5a and into the axial portion of rotor I1. The plowed material upon engaging the rotor is first affected by the spiral screw 38. Screw 38 forces material outwardly along said funnel portion and has also a disintegrating effect upon such material while feeding it axially into the blades I1c of rotor I1. The combined action ofthe rotor and funnel I5a results in the snow or other material being forcibly ejected outwardly and longitudinally of the mold board for a substantial distance.

Our improved construction with provision for great adjustability in the elevation and angulation ofr the mold board adapts it to a wide variety of plowing operations. Cuts at various heights and at various angles relative to the road bed may be made,l the forward end of the mold board in the embodiment shown having an adjustment in elevation of approximately 5 feet, and the elevation of the rear end of the plow being adjustable through a range of 9 or 10 feet for operation. High drifts or snow walls formed by plowing the center of the road may be leveled by successive cuts with our improved structure, or when desired, the plow may be angled considerably with .respect to the horizontal and the material back sloped for a very considerable distance from the edge of the highway. For Working on a steep shoulder or a ditch below the level of the highway, the mold board may be dropped at its outer end several feet below the level of the road, and in such adjusted position the discharge rotor may extend to the ditch itself.

.When it is desired to move the vehicle from place In all the various adjusted positions of our plow, the power discharge or rotor is emciently driven at high speed from the source of power taken from the medial portion of the propelling vehicle. L

'I'he moving of the mold board from one'adjusted position to another operates the focusing loutwardly at one side of said vehicle and supmechanism, including the extensible focusing arm i and the oscillatory transmission housings I8 and 44 which, by oscillation, shift the posi tions of the stub shafts `52 and 48 respectively, relatively to the rotorshaft and power shaft. Such focusing elements are related with the driving elements, including drive shaft 54 and drive connection elements l1 and 53 for effective driving relationship thereof in all positions of the mold board and to prevent any substantial angulation in the joints or connections of such driving parts.

In Figs. 10 and 11 two more or less extreme adjusted positions of the mold board and variation of the focusing mechanism are shown, Fig. 10 showing the driving connections and focusing means when the plow is positioned as in Figs. 1 and 2, and Fig. 11 showing such parts with the plow in the position of adjustment shown in Fig. 3. l

By reference to Figs. 10 and 11 it will be seen that the oscillatory housings 4I 'and 48 have been tlu'ned considerably, -as shown in Fig. 11, from their positions in Fig. 10, where the mold board is positioned horizontally, as shown inl Fig. 1. The turnings of these housings, it will further be seen in Fig. 11, causes the universal connections to be shifted with respect to the power driving shaft and with respect to the axis of the rotor to substantially align the extensible driving shaft 54 with' the driving connections in the adjusted position of the plow shown in Fig. 3.V The extensible rousing arm 55 with its torque connections through sleeves 56 and 51 with the oscillatory housings 44 and I8 respectively, positively position the housings in proper relationship through the extremely wide range of adjusted positions of our plow structure to always maintain effective driving relationship between the several parts of the driving connections.

From the foregoing description it will be seen that we have provided a materially improved plow for moving snow and other material from the side, shoulders andvditch of a road having a wide adaptability for various -plowing operations and adapted to be operated and adjusted by the driver of the propelling vehicle. The mounting and supporting of the mold board and the novel driving connections and focusing means make possible the very wide adaptability of our construction.

It will further be seen that because of our novel construction of mold board with its rotor-mounting-funnel' and variable pitch cutting edge in cooperation with its adjustable mounting, a very efiicient plowing action and forcible discharge of material is obtained.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of our invention, which. generally stated, consists in a device capable of carrying out the objects above set forth and in the novel parts and combinations of parts dis closed and defined in the appended claims.

What is claimed is: 1. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted of said vehicle to cause material to be moved outwardly and longitudinally thereof, said mold board having a funnel-shaped, outwardly flaring rear portion, a discharge rotor mounted in said rear portion, means for driving said rotor. the lower portion and cutting edge of said mold board having a variable pitch within the length thereof, said pitch being relatively steep at the forward portion and being relatively slight in pitch at the rear portion to cause said material to move backwardly and upwardly into said funnel-shaped portion.

2. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and longitudinally thereof, said mold board having a funnel-shaped, outwardly flaring rear portion, a discharge rotor mounted in said rear portion, means for driving said rotor, the lower portion and cutting edge of said mold board being positioned in slightly inclined relation to the vertical at its forward end and twisted to lie backwardly inclined at an acute angle to the horizontal at its rearward end to cause material to move upwardly into said funnel-shaped rear portion and into said discharge rotor.

3. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and rearwardly thereby with respect to said mold board, said mold board being mounted for elevational adjustment at both its forward and rear ends, power discharge means mounted in the outer portion of said mold board, a source of power on said vehicle including a rotary element having its axis disposed rearwardly of the forward end of said mold board, driving connections between said rotary power element and said discharge means including drive connection elements mounted for adiustment of position relative to the axis of said rotary element and focusing mechanism extending between said vehicle and said mold board and yconnected with said drive connection elements to cause shifting thereof, through adjustment of said mold board whereby eilicient driving relation,4 between said driving connections. said rotary power element and said discharge means is obtained in all adjusted positions of said mold board.

4. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and rearwardly thereby with respect to said mold board, a substantially horizontal pivot with which the forward end of said mold board is connected. a mounting for said pivot supported from said vehicle and mounted for wide adjustment in elevation, rotary discharge end of said mold board, a source of power on said vehicle including a rotary element, the axis of which extends transversely of said vehicle and is disposed rearwardly of the pivot for said mold board, and driving connections between said rotary element and said discharge means including a longitudinally extensible drive shaft and shiftable drive connection elements, and focusing means extending between said mold board and said vehicle and associated with said drive connection elements to direct the positioning of said connection elements for maintaining efiicient relationship thereof to said drive shaft during all adjusted positions of said mold board.

5. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and longitudinally-thereof, said mold board being mounted for elevational adjustment at both its forward and rear ends, power discharge means mounted in the outer portion of said mold board, a source of power on said vehicle including a rotary element having its axis disposed transversely of said vehicle and rearwardly of the forward end of said mold board, driving connections between said rotary power element and said discharge means comprising, transmission mechanism connected with said rotary power element andv including an oscillatory housing and a drive connection element mounted therein, and drivably connected to said power element, transmission mechanism mounted on said mold board and including an oscillatory housing and a drive connection element mounted therein and drivably connected with said power discharge means, longitudinally extensible drive shaft having its ends connected respectively with said first and second drive connection elements by universal connections, and a longitudinally extensible focusing member extending between said two transmission mechanisms and connected with the respective housings thereof for torque effect to maintain said drive connection elements in effective relationship to said drive shaft during all adjusted positions of said member.

6. A device for moving snow or other material from the side of a road having in combination with a propelling vehicle, a power driven discharge means disposed at one side of said vehicle and spaced outwardly some distance therefrom, a motor, means for driving said discharge means from said motor and means extending outwardly from said side of said vehicle for supporting said discharge means and mounted for movement about substantially vertical and horizontal axes adjacent said side of said vehicle, said discharge means being disposed so as to project said snow or other material in a rearwardly and outwardly direction, and a skid shoe secured to said supporting means at the lower portion of said discharge means and adapted to overcome the natural tendency of said discharge means to tilt or dig due to the work imposed said shoe comprising a plate of considerable ar'ea extending rearwardly from said supporting means.

'7. A device for moving snow or other material4 from the side of a road having in combination with a propelling vehicle, a discharge rotor disposed some distance from said vehicle at one side thereof and having its axis extending at an angle to the longitudinal center line of said vehicle, a

vehicle, said mounting being adjustable for elevation at both its forward and rear ends, a power take-off element on said vehicle, driving connections .between said power take-ofi' element and said discharge rotor including a longitudinally extensible drive shaft, and shlftable drive connection elements and focusing means extending ibetween the outer lpart of said mounting and said vehicle and associated with said drive connection elements to direct the position thereof for maintaining enicient relationship thereof to said drive shaft, power take-off element, and rotor during all adjusted positions of said mounting.

8. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a concave mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and longitudinally of said mold board, means' for supporting .said mold board for elevational adjustment at both its forward and rear ends, power discharge means mounted inthe outer portion of said mold board, means for driving said power discharge means, and a skid shoe mounted on the outer and lower portions of said mold board said shoe comprising a surface-engaging plate of considerable area extending rearwardly from said mold board for overcoming the natural tendency of said mold board to tilt or dig due to the work imposed.

9. A plow for moving snow and other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and ,supported at an angle to the longitudinal center line of said vehicle to cause material to be moved outwardly and longitudinally thereof, and a discharge rotor mounted in the outer portion of said mold boardand with its axis directed to discharge material from the end of said mold board longitudinally thereof, said rotor comprising, a spiral section and a plurality of discharge blades disposed outwardly of said spiral section.

10. A plow for moving snow and other material from the sidel of a road having in combination with a propelling vehicle, a mold board mounted outwardly at one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to -be moved outwardly and longitudinally thereof, said mold board being mounted for substantial and independent elevational adjustment at both its forward and rear ends, power discharge means mounted in the outer portion of said mold board, a source of power on said vehicle, semi-universal driving connections between said source of power and said power discharge means extending outwardly from said vehicle to the rear portion of said mold board with freedom for widely varying the elevation of the ends ofv said mold board and focusing mechanism extending between and connected with elements of said driving connections for maintaining said elements in eiicient relationship during all adjusted positions of said mold board.

1l. A device for moving snow or other material from the side of a road having in combination with a propelling vehicle, a mold board mounted outwardly of one side of said vehicle and supported at an angle to the longitudinal center line of said vehicle to cause material to be moved mounting for supporting said rotor from said outwardly and longitudinally thereof, said mold board having a concave, outwardly flaring outer portion, a discharge rotor mounted in said outer portion and related therewith to forcibly eject material in an outwardly diverging, truncated,

Y conical form longitudinally of the outer end of said mold board, said outer portion of said mold board having its upper concave portion curved on a. shorter radius than the lower portion thereof to constitute overhanging means for guiding discharge of material to prevent upward scattering of the same, means for driving said rotor with freedom for both the forward and rear ends l0 of said mold board to be independently and substantially adjusted in elevation, means for independently controlling the elevational adjustment of each end of -said mold board whereby in conjunction With said flaring outer end land over--

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