US2101666A

US2101666A - Snow moving device

Info

Publication number: US2101666A
Application number: US57091A
Authority: US
Inventors: Ellsworth W Austin
Original assignee: PLANT CHOATE Manufacturing Co Inc
Current assignee: LA PLANT-CHOATE MANUFACTURING COMPANY Inc; PLANT CHOATE Manufacturing Co Inc
Priority date: 1936-01-02
Filing date: 1936-01-02
Publication date: 1937-12-07
Anticipated expiration: 1954-12-07

Description

Dec. 7, 1937.

E. W. AUSTIN SNOW MOVING DEVICE 4 Sheets-Sheet l Filed Jan. 2, 1936 E. w.- AUSTIN snow MOVING DEVICE Dec. 7, 1937.

r m Z E ,4 fl w M N w 3 W/ w J u I w B 0 0 $6 a y he 3 A, 7% a w 7 A J 2 x a m 3 m; a 3 7 a u. 9 0 0 5 9 M a .M w 9 7 6 ,w m a i M w a x w 5 w v INVENTOR. fad/r04 ll lgasm/ BY ATTORNEY Dec; 7, 1937. E. w. AUSTIN 2,101,666

SNOW MOVING DEVICE Filed Jan. 2, 193a 4"Sheets-Sheet z IN V EN TOR. zzs/merv 1 4097 BY I g I AT'YIORNEY Dec; 7, 1937. E. w AUSTIN SNOW MOVING DEVICE Filed Jan. 2', 1936 4 Sheets-Sheet 4 INVENTOR. [Em/mew 11 403274 BY 5 6 AT ORNEY Patented Dec. 7, 1937 UNITED STATES PATENT OFFICE snow MOVING DEVICE Ellsworth W. Austin, Cedar Rapids, Iowa, assignor to La Plant-Cho'ate Manufacturing Company, Incorporated, Cedar Rapids, Iowa, a corporation of Delaware Application January 2, 1936, Serial No. 57.091

14 Claims.

tremely desirable that control of the blades during operation of the device be for the most part controlled from within the cab of the tractor or other prime mover. Furthermore, it is very dem sirable that simple means be provided for varying the position of the various blades' with respecttothe ground, for locking them in various positions and at times for permitting one" or more of the blades to float. Furthermore, the blades and other parts of the devices encounter tremendous. loads, many of a which are of a characterto tend to cause wrenching of the. parts of the device and means must be provided for meeting these loads. I

It is,, there'fore, a general object of my invention to provide anew and improved snow moving device particularly suitable for moving snow, ice, earth, and the like.

An object of my invention is to provide, in a 25 snow moving-device, .a plow at the front of the device, wings at the side of the device, and means for changing therelative position of these blades with respect to the ground.

, Anotherobject of my invention is to provide 30 means for changing the position of the various blades of a snow moving device from one central point. p Another object of my invention is to, provide meansfor securing down pressure on the blades and particularly: the v blade of a snow moving device.

Another object of my invention is to provide. new and improved means for actuating and controlling the wing blades of a snow moving de- 40 vice of the character described.

Another object of my invention is.to provide means for adjusting the wings of such a device and particularly the angle of tilt of these wings. Another object of my invention is to provide an improved wing blade adjusting and control means.

Another object of my invention'is to provide A In devices of this general character it is ex-- for supporting and bracing these Miler object of my invention is to provide an improved means for meeting the forces set up in-the blade as they are pushed along over the ground.

Other and further features and objects of my invention will be'more apparent to those skilled in the art upon a consideration of the accompanyingpdrawings and following specifications, wherein is disclosed. several exemplary embodiments of the invention, with the understanding, however, that such changes may be made therein as fall within the scope of the appended claims without departing from'the spirit of the invention. The device may be used or adapted for use for other purposes.

In the drawings; Figure 1 is a view in perspective of a device constructed according to one embodiment of my invention. The V plow..is in lowered position.

while the wing plows are in raised positions to show the wing plow supporting and actuating mechanism. v

Figure 2 is a view in perspective from behind one of the wing plows and showing particularly thesupporting and actuating mechanism for the wing plow and also the supporting and actuating mechanism of the V plow.

Figure ,3 is a view in perspective of the V plow of the device shown in Figure 1 taken be.- hind the plow from the position usually occupied by the tractor or other prime mover.

Figure 4 is a diagrammatic view illustrating the supporting and actuating mechanism for the wing blades. This view is taken from substan tially the same viewpoint as that of Figure 2-.

Figure 5 illustrates more or' less diagrammatically how a wing plow is supported and locked in a substantially horizontally extending position, portions of the blade being broken away to show the structure to better advantage.

Figure 6 shows the same'wing blade locked in a. raised position x Figure -7 is a view partly in perspective and partly i-n-sectionof the wing blade illustrating its construction.

Figure 8 is a fragmentary perspective view of one of the rollers for guiding the rear portion of thestructure used in supporting and actuating the plows.

Figure 9 is a plan view in more or less scheinatic diagram illustrating the various conduits and. hydraulic control mechanismsemployed in .bracing the wing plows against the forcesset 'Davin et 21., issued April 24, 1934.

more or less-diagrammatic relation of the hydraulic control and actuating mechanism.

Figure 11 is a sectional view illustrating how the side frames or levers are attached to the V plow.

Figure 12 is a fragmentary view in perspective illustrating the actuating mechanism for operating and supporting the V plow, and

Figure 13 is a fragmentary view of the V plow shoe and adjustable shoe support.

In general a snow moving device constructed in accordance with a preferred embodiment of my invention and illustrated in the drawings, is comprised of three cooperative structures, a V plow and plow supporting and actuating structure V; a left wing scraper and scraper actuating and supporting mechanism L; and a right wing scraper and-scraper supporting mechanism R. The V plow is supported and raised and lowered by a mechanism somewhat similar to that disclosed in my copending application, Serial No. 742,368, filed September 1, l934, but various modifications of this structure are necessary to provide a structure more particularly adaptable for snow removal. One of these structures is the adjustable shoe structure, illustrated in Figure 2, which structure is adapted for determining the spacing of the cutting edge of the V plow with respect tothe ground.

The wing blades and wing blade supporting and actuating structures are somewhat similar to that disclosed in Patent #1,956,007 to Thomas V.

, Numerous improvements have been made in this latter structure among which are the mounting of the jack in a position where it does not interfere; with the extreme raising of the wing plows and plow structures, improved means for locking and unlocking the wing plows with reference to their supporting structure and improved means for pins l5, Figure 11. These lever arms I 2 are piv-' otally engaged in accordance with usual practice, on stub-axles 13 which are engaged to the'subframe or running gear I of the tractor- The V plow is thus permitted to be raised and lowered with the stub-axles i3 as pivots.

Raising and lowering of the V plow is accom-- plished by means of a structure, including side plates l6 and H, on the opposite sides of each running gear. A pair of hydraulicjacks l8 are provided and the cylinders of these jacks are engaged to cradles' I9 which are in turn pivotally mounted between the side plates l6 and l I by means of pivotal mountings indicated at 2|. Bell cranks, indicated at 22, are pivotally mounted between the side plates at a. position ahead of and above the jacks and one arm of each bell crank is pivotally engaged to the outer end of the piston rods or rams of each jack, while the other arm of each bell crank is pivotally engaged to a link 24., The other ends-of the links are pivotally engaged to the inner faces of the V plow by means of pins 26 which are received within openings 26a in the channels 41 hereinafter described. l

The jacks 18 are preferably of the double ended type and fluid is introduced into the rear ends of the jacks by means of conduits "iv and H21) and to the front ends of the jacks by means of conduits I611) and I681), to raise, lower or hold the V plow in position. as desired. It is apparent the plow may be raised to any desired angle within the operating range of the machine and may .also be driven forcibly down against the ground as where it is necessary to remove ice. and the like, from the ground surface.

The blades of the V plow are preferably of built-up welded sections to afford great strength to the structure and in the preferred embodiment of the invention here shown, I provide a vertically disposed divider plate 3| at the extreme ,nose of the plow to divide the material being curved to pick up the material and roll it back upon itself until it is discharged at the rear of the mold boards. The upper ,edges of the mold boards 32 are stiffened by means of angle plates 33 and the upper edges are additionally braced at the nose by means of a triangular gusset 34, the edges of which are turned over to stiffen the structure. The angle plates 33, if desired, may

bereplaced by extension plates to afford greater capacity to the plow.

A- pair of cutting edges 36, of extremely hard wear resisting material, are secured to the lower edges of the mold boards by means of bolts 31.

. The lower edges of the mold boards are subjected to tremendous strains and I preferably reinforce them by means ofheavy horizontally extending angle beams or reinforcing sheets 38 having the upper edges thereof Welded to the rear faces of the mold boards and having the front edges welded or otherwise secured to the under side of the lowermost edges of the mold boards. These angle beams are additionally reinforced by means of reinforcing plates 39 which extend from the lower edges of the mold boards at the under side thereof up'at an angle to the rear wall of the angle beams or reinforcing plates. The reinforcing sheets or'angle beams 38 are additionally braced against each other by means of a cross beam 41 which is welded to the opposed inner faces of the angle beams. The cross beam 4| affords means for adjustably mounting a heavy shoe at the nose of the V plow, as hereinafter described.

The rear ends of the mold boards of the V plow are possibly subjected to greater loads than any other part of the plow and these'ends are re-' inforced and braced by heavy, vertically extending angle beams 44, the edges of the box-like reinforcing beams being concaved at the rear side edges to conform to the curvature of the mold A boards and being welded or otherwise secured to the rear faces of the mold boards.

The box reinforcing members 44 serve not only for bracing the rear ends of the mold boards but also serve as means for receiving receptacles II in which the levers II are secured, the brackets brackets 46, in which pivot pins 26 are pivotally engaged. The pivot pin brackets 46 are built up .structures comprised of horizontally extending channels 41 secured to the side walls of the box members 44 and to the inside faces of the mold boards 32 and braces or gussets 48 are secured to the inside faces of the box members 44 and. to the underside of the channels 41.

It is desirable in some types of snow removal Work that the V plow be permitted to float freely and its position with reference to the ground be determined, by means of one or more shoes. In

the structure here illustrated a single, long, wide of various holes 520. and pin 52!). The plate or v some such means.

shoe49 having a plurality of soles or runners 5| is employed at the nose of the V for adjustably supporting it with reference to the ground surface. A reinforcing channel member 49a is integrally engagedwith the shoe 49 by welding or The member 49a-is in turn pivotally engaged at its front end to suitable brackets 52 within the nose of the V. A plurality of engagement positions are provided by means shoe 49 is pivotally engaged to support members 53 at each of the rear corners of the plate 49. These support members 53 project upwardly adjacent the rear face of the cross beam 4| and pass through adjustment brackets 54 which are secured to the rear face of the cross beam 4|.

Each of these support members 53 is provided with a hook 56 at its upper end to prevent the members from dropping downwardly through the openings and the shoe 49 may be raised or lowered as desired until the shoe is at the desired position below the cross beam 4|, to secure any desired spacing of the cutting edge of the V plow with respectto the ground. This is usually accomplished by releasing the pins 59 from the-supports 53 andmoving the V plow up or down from thecab until the pins 59 drop into the desired openings 51. The lever 62 is held in closed position by dropping the ring 55 of chain 60 over the lever." v

The wing plow supporting and actuating structure, which I am about to describe, is best shown in Figures 2- and 4 to 6. inclusive. In this embodiment of the invention a rearwardly extending plate 64 is secured to the upper face of each of the levers l2 to aflord a platformv towhichcyllndrlcal upright posts 65 and vertically extending plates 66 and61 are secured. The plates 66 are roughly triangular in shape with the greatest dimensions extending vertically. The plates 66 form the backs of roughly box-like structures including the upright cylinders orguides 65 and the plates 51.

A pair of angles 68 are placed on top of the fenders at the rear thereof, just back of the cab 69. These angles are provided with rec- The inside faces of the boxes tangular plates 10, Figure 8, at their outer ends having brackets 1| secured thereto, and the brackets 1| rotatably support rollers 12 in such position that they roll on the inner faces of the plates 66 with the axes of the rollers substantially in line with radii passing through the stub-axles or pivots i3. These rollers roll on and thus afford guides for the plates 66 and in this way the rear 'of the entire plow blade supporting structure is guided and side thrust set-up in the v plow and wing plows istransferred to the main frame of the tractor.

l The plates 6.4are turned up at the outer edges of the horizontally extending portions, as indicated at 64a, and the vertically extending plates 61 are secured to these turned up portions 64a. The plates, 66 are additionally braced by means of channels 13 to which the plates are secured, as by means of brackets 14. L-shaped channel members are secured to the plates 66 at the upper edges thereof and extend downwardly along the rear upper portions of the plates 66 to cover the mechanisms supported by these structures, to aiford a stiffening means for the structures, to provide means to'which the upper end of the uprights 65 may be. attached, and also to provide means by which the rear ends of bracing members 16 .may be secured to these structures.

The upper ends of the plates 66 are secured to the rearmost portions of the bracing members 16 in any-suitable manner. Triangular bracing gusset plates 11 are also secured to the rear portion of the bracing members 16 andthese plates 11 are likewise secured to the forwardly extending portions of the channels 15, vIt is apparent.

that the structures just described; while made up of ordinary plates and panels, affords an extremely rigid and strong structure, the parts of .which may be employed for purposes hereinafter described. I may term these last named structures and rear upright bracing structures.

The uprights 65 afiord guides for the cylindrical slides 18 which may travel up and down the cylinders or guides 65. Hydraulic jacks 19,

' termed wing jacks, are pivotally mounted in the as by means of clevis 85 and pins 86, to intermediate portions of the levers 82. It is apparent, from inspection of thedrawings, that when the pistons of the wing jacks 19.are driven outwardly, the piston rods or rams 84 cause the levers 82 to move downwardly about the pins 83 as pivots and that when thepistons are drawn into the jacks the levers are raised. Power is thus applied to the levers and the levers are connected to the parts of the wing blade supporting and actuating mechanisms in a manner to raise and lower the wing blades as desired as hereinafter described.

Other cylindrical guides or standards 81 are mounted near the fronts of the lever arms l2 in an upright position substantially parallel to the standards 65.' The lower ends of the standards 61 are engaged to the lever arms |2 by means of suitable brackets 88. Caps 89, including cupped receiving member 8911 and gusset plates 90 and 9|, 'are adapted tosurmount the upper ends of the standards 81. The caps 89 are provided with rearwardly and upwardly extending support brackets 92 which are adapted to support pulley 93 for purposes hereinafter described. The caps 89 on opposite sides of the device are joined and stiffened by means of a cross brace 94. The rear ends of the plates 90 and 9| are secured to the forward end of the bracing member 16. Other bracing members extend forwardly and downwardly from the caps 89 and are secured thereto by means of forwardly extending portions of the plates and 9|. The braces are secured to the upper ends of the V blade end box sections 44 as by means of welding them thereto. Additional gusset members 9B are employed to strengthen this joint.

Cylindrical slides I91, more particularly shown in Figures 5 and 6, are mounted for vertical movement on the uprights 81. The slldes 91 have roughly triangular plates 88 secured to the slides 91 and these plates afford means for holding the wing blades in various positions of tilt. The wing blades 99 are pivotally engaged to the slides 91 by means of pivots I00. The blades are held in various positions of tilt by means of pins IOI which pass through suitable openings in a boxlike bracket H0 on the rear of the blade and through corresponding openings I02 in the plates 98. In this manner the blades may be supported in a substantially horizontal position as shown in Figures 2 and 5 or any one of'several tilted positions as shown in Figures 1 and 6. There are heavy turning moments present due to the blades being supported at their front end, tending to twist the slides 91 on the standards 81 and I have minimized the friction produced in moving the guide up and down by supplying rollers I03 at the rear lower end of the guide and I04 at the front upper end of the guide, which rollers are rotatably mounted on the slides and bear against the side walls of the standards 81. The rear walls of the blades 99 are braced by braces I05, I06 and I01 and their lower edges are reinforced by means of box sections formedby the angularly bent plates I08. The upper ends ofthe upright portion of the plates I08 are welded or otherwise secured to the rear faces of the blades 99 and the forward edges of the lower portions of the plates I08 are welded or otherwise secured to the lower edges of the blades 99. Thebox sections I08, like the V plow, are additiona y braced by upwardly and rearwardly extendin plates I09, which are also secured to the lower rear faces of the blades 99 and to intermediate portions of the vertical parts of plates I08. The ends of the reinforcing members are closed ofi by means of triangular plates II I, and cutting edges 2 are supplied for the I" having clevises I I1a by which they may be secured to the slides 18 in any one of several positionsby means of pins 8 and the various any desired position by the pins I2I.

The wing blades 99 may be held at any desired aromas angle with the main framework by placing the pins I2I in any of several openings in the telescopic members H8 or the clamp II4 may be slid forward on the pipe II 3 and the members II8 completely telescoped in. the members I I1 to permit the wing blades to be folded back against the sides of the supporting structures, the chain I23 being hooked to the eyes I24 on plates 86 to hold the wing blades in this latter position.

The mechanism for raising and lowering the wing plows and including the

slides

91 and 10 will now be described. These mechanisms are illustrated in Figures 1, 3 and 4; Figure 4 being a diagrammatic illustration of the structure employed. In the present embodiment of the invention, two cables I 3| and I32 are employed for each of the wing plows. The cable I3I may be employed for lifting the wing plow blades proper and the cable I32 being employed for raising and lowering the slide 18. One end of the cable I3I is fastened to the lower face of the bracing member 16 as indicated at- I3Ia, extends downwardly and-under a sheave I33 mounted on the end of the lever arm 82, up and over the padlock pulley 93 which is supported by brackets 92 on top of the framework and then downwardly to a chain lock I34.

A chain I36 is secured to the lock at any desired position and the other end of the chain is welded or otherwise secured to the lower end of the brace I01. It is apparent that when the lever arm 82 is pushed downwardly by the ram 84 of the jack 19, the sheave I33 is pushed downwardly to raise the end of cable I3I to which the wing plow is attached to thus raise the wing and that when hydraulic pressure on the ram '84 is released the weight of the wing plow drives the pulley I33 and arm 82 to permit the plow to drop under its own weight. The slide 91 slides 1 up and down on the standard 81 and thus the wing blades'may be raised and lowered by the jack 19 as desired.

It is desirable that when the wing blades are being raised and lowered that the end of the push poles H1 and the slides 18 be raised and lowered at the same time so that the push poles will be in the proper position to meet the forces exerted on the wing plows; This motion of the slide 18 and push poles is accomplished by means of the cable I32. One end I 32d. of the cable'is fastened to a suitable eye I31 on the end of the lever arm 82. The cable I32 then passes downwardly beneath a pulley I38 on the frame member I2, rearwardly parallel to the frame member I2, beneath another pulley I39 on the rear end of the plate 64, then upwardly to a pulley. "I which is fastened to the under side of the beam 15, forwardly and over a pulley I42'which is fastened on the under side of the bracing member 18 and downwardly to a takeup eye I43, also secured to the end of the lever arm 82. This takeup device I43 may be in the nature of an eye bolt secured to-the lever arm 82 and having the lower end thereof threaded so that a nut may be threaded on the eye bolt 0 to pull the eye downwardly against the tension of the cable I32 as desired. An intermediate portion of the cable I32 between the pulleys I 39 and MI is secured'to the slide 18 by means of a clamp I44 which engages the cable to an ear 18a of the slide 18.

It is apparent that as the arm 82 is driven downwardly the eye bolt I43 pulls the cable I32 downwardly to raise the ear 18a and thus the slide 18 and push pole II1. When the ram 84 is since a more downwardly acting component of force is desirable nearthe ground.

The forces set up by driving the wing blades against snow and the like is transmitted through push poles IIS and II! to the side plates 66 and through the rollers I2 to the main frame of the tractor.

0bviously,'the wing plow and wing plow actuating and supporting structure I have just described and which is particularly shown in Figures 2' and 4, is duplicated by the wing plow and wing plow supporting and actuating structure on the right side of the tractor as illustrated in Figure 1 except that the parts are in reversed position. While the same numerals apply to the parts either on the left or on the right side of the snow moving device, in some instances -1 have added the letter R to indicate that the devices are on the right side of the tractor; thus the numeral I8 applies to both of cated in Figure 9, but for the purpose'of the following description I have added the letter R to the numeral indicating the right-hand jack.

The hydraulic actuating and control means is more particularly illustrated in Figures 9 and 10. In accordance with the usual practice I may employ a hydraulic pump I 5i at the rear of the tractor which is driven by a shaft from the motor of the tractor in accordance with the usual practice. An oil supply is maintained in the tank I52 and a conduit I53 carries oil from this tank to the pump. Oil under pressure is carried upwardly from the pump by means of a flexible conduit I54 and forwardly through the rear wall of the cab 69 by means of a conduitIGIl where it is delivered to the triple, valve housing I51.

"weight.

The flow of oil through the valve housing I5'I is controlled by the valves I58, I59 and 'I8I and these valves control the flow of oils selectively into the conduits I 62R; I63V and I84L. The two outside valves I58 and I6I are so constructed that in one no ion of these valves oil is delivered under pre sure to the conduits I82R and "ML respectively and in another position of these valves oil from the conduits and from the jacks ,I9 and 19R may flow back through the housing and through a return line I56 to the supply tank I52.

The middle valve I59 is a three-way valve so constructed that in one position of the valve 011 under pressure is admitted to the. conduit IB3V which leads to the front ends of jacks I8 and I8R, while the fluid from the rear of the jacks I8 and IIIR may pass through the conduit IGSV. through the valve housing I51 and back through while oil from the front ends of the jacks passes backthrough the return line to the tank. In

still another position of the valve I59 all the ports of the valve are connected and the V plow will "float or flnd its own level through its own In still another position of the valve I59 all ports are closed and the V plow is held rigidly in any selected position. v e The conduit I62R- is connected with the jack 19R through the flexible conduit IIiIiR, the contlsie jacks indiduit I88V isconnected with the jacks I8 and IB R. v

through flexible conduits I6'IV and I88V. I'he conduit I69V is connected with the rear ends of the jacks I8 and I8R by,means of flexible conduits HIV and NW. The conduit IGlL is connected by means of the flexible conduit I'I3L with the jack I9. It is now apparent that the operator by manipulation of the valve I58, may raise and lower the wing plow 99R and may raise and lower the wing blade 99 by means of valve IGI. By

manipulation of the valve I59 the operator may raise the V blade or lower it or drive it downwardly as desired. He may also permit the V blade to float and find its own level through its own weight. In this position of the valve I59 the V blade rests on the, shoe 49 and follows the contour of the ground or other surface on whic these blades or shoes slide.

In operation the operator may'raise all-.of the blades and thus drive the tractor down the road without having any of the blades touch the surface of the ground or snow, or he may lower the V' plow and permit it to float of its own weight to .throw snow or the like from the surface ofthe "ground in front of the snow moving device. If

desired he may drive the blade downwardly to plow down with considerable force against the such a position that the weight of the forward surface of the ground as for removing ice and the like from the surface.

He may lower the wing blades in a position parallel to the ground and with the cutting edges of the wing blades at substantially the same level as the cutting edge of the V plow to increase the eflectiveness or width of cut of the snowmoving device. If desired he may tilt either or both of the wing blades at an angle as illustrated in Figure 6 and thus bank the snow at the side of the road. If desired he may leave the wing bladesin position parallel to. the" ground but raisethem above theground to make a Fbenching cut at the side 'of the road. This out has the advantage that snow may drift into the benched portion of the cut without dropping down onto the main roadway until the bench is full of snow. In some sections of the country this 'benching process of snow removal is used in-preference to the sloping of the sides of the cut. The operator may to another, or for storage,

' It is apparent that I have provided extremely rigid blade structures which are. well adapted to meet all the forces acting upon them. I have also provided a snow moving device which is extremely flexible in operation-and the blades of which may be manipulated by the operator for the most part without leaving the cab.

It is apparent that modifications of my invention may be made by those skilled in the art. Such modifications may bw'made without departing from the spirit and scope of the invention. as set forth in the appended claims.-

- I claim as my invention:

'1. In a snow moving device, apr' 'e mover, lever arms pivotally engaged to the gear of the prime mover, a V plow engagedin front of 50 quickly raise and lower the wing blades and the the prime mover and on the ends of the lever arms, a wing plow at the side of the prime mover, means for actuating and supporting the Wing plow comprising vertically extending standards on the lever arms, the wing plow being slidably mounted on the standards, and means for actuating the wing plow including a hydraulic jack pivotally mounted in one standard, a lever arm pivotally engaged to the last-named standard, the ram of the jack being connected to the lever arm, and means for conveying movement of the lever arm to the wing plow.

2. In a snow moving device, a prime mover, side frame members pivotally engaged on the prime mover, a V plow mounted on the side frame members, a wing plow, standards on the frame members for supporting the wing plow, a supporting structure for bracing the standards,

' a lever arm and a jack both pivotally engaged to the supporting structure, an operative connection engaged between the jack and lever arm and another between the lever arm and the wing'piow for raising and lowering the wing plow by means of the jack.

3. In a snow moving device, a tractor, side frame members pivotally engaged on the running gears of the tractor and extending forwardly therefrom, a wing blade, vertically extending members on at least one of the frame members, means for slidably engaging the wing plow on the vertically extending members, one of said members being comprised of several vertically extending parts, a hydraulic jack pivotally engaged between, two of the last named vertically extending parts and lever means for imparting motion of the jack to the wing blade for raising and lowering it. i

4. An earth moving device including a tractor, a side frame member pivotally engaged to the running gear of the tractor, a wing blade mounted on the side frame member for substantially vertical movement with reference thereto, a pair of upright/members on the side frame member,

a hydraulic jack pivotally engaged within the upright members and lever means for imparting movement of the ram of the jack to the blade to secure vertical movement of the wing blade.

5. Anearth moving device including a tractor, a side frame member pivotally engaged on the tractor, a wing blade mounted on the side frame member for substantial vertical movement with reference thereto, a pair of upright plates on the side frame member, a jack and a lever arm pivotallyiengaged between the upright plates with the leverjarm pivotally engaged to the end of the ram of the jack and means for imparting movement of the lever arm to the wing blade to secure .up and down movement thereof.

bers, a hydraulic jack pivgtally engaged between the upright members, a lever also pivotally engaged between the upright members, means for connecting the ram of the hydraulic jack to the lever member, and means for, connecting the free end of the lever to the slides on the respective guide members to raise and lower them to thus raise and lower the wing blade.

7 In a snow moving device, a tractor, a side frame member pivotally engaged to the running gear of the tractor, a pair of vertically extending guide members on the side frame member, a pair of vertically extending plates adjacent the rear guide member and secured to the upper and lower ends thereof, a cradle pivotally mounted between the plates, a hydraulic jack mounted in the cradle, a' lever arm having one end pivotally engaged between the plates, means for connecting the ram of the jack to the lever arm, and means for connecting the lever arm to the wing blade to slide it up and down on the guide members.

8. In an earth moving device, a tractor, a support pivotallly engaged on the tractor, a scraper blade slidingly mounted for vertical movement on the support, a lever pivotally engaged to the support, power means for moving the lever, and means operatively engaging the ends of the scraper blade to the lever, one of said means including a direct connection between the lever and one end of the scraper blade and the other including a speed reducing means for connecting the lever with the other end of the scraper blade.

9. Inan earth moving device, including a vehicle, means for mounting a wing blade on the vehicle for substantial vertical movement with reference thereto, a pair of upright plates on the wing blade mounting means, a jack and a lever arm pivotally engaged between the upright plates, with the lever arm pivotally engaged to the end of the ram of the jack, the jack being inclined downwardly and the lever arm upwardly to form two sides of a triangle with the plates as the third side, and means for imparting movement of the lever arm to the wing blade to secure up and down movement thereof.

10. In a snow moving device, a vehicle, a pair of vertically extending guide members mounted on the vehicle, slides on each of the guide members, a scraper blade pivotally engaged at the front end to the slide member on-the front guide member, a push pole for connecting the rear of the scraper blade to the slide on the other guide member, a pair of upright members secured to the the rear guide member, a hydraulic jack pivotand lower them to thus raise and lower the scraper blade.

11. In a snow moving device, a vehicle, a pair of vertically extending guide members mounted on the vehicle, a scraper blade mounted on the guide members, a pair of vertically extending plates adjacent to the rear guide member and secured to the upper and lower ends thereof, a cradle pivotally mounted between the plates, a hydraulic jack mounted in the cradle, a lever arm having one end pivotally engaged between the plates. means for connecting the ram of the jack to the lever arm, and means for connecting the lever arm to the scraper blade to slide it up and down on the guide members.

' 12. In a. snow moving device, a vehicle, a vertically-extending guide member mounted on the vehicle, a scraper blade mounted for vertical movement on the guide member, a pair of vertiaromae cally extending oppositely-disposed plates mounted at one side of the vehicle, a hydraulic jack pivotally mounted between the plates, a lever arm pivotally engaged between the plates, means for connecting the ram of the jack to the lever arm, and means for connecting the lever arm to the scraper blade to move it up and down with reference to the tractor.

13. In a snow moving device, a tractor, a side frame member pivotally engaged on the tractor, a scraper blade engaged to the side frame member to permit vertical movement of the scraper blade with reference to the vehicle, and means for moving the scraper blade including vertically disposed plates mounted on the side frames, a jack with the cylinder thereof pivotally mounted between the plates, a lever pivotally engaged to the plates below the pivotal engagement of the jack, and the ram of the jack-being pivotally engaged to the lever.

14. In a snow moving device, a vehicle, a scrap er blade mounted for. vertical movement with reference to the vehicle, and means for moving the scraper blade including supporting plates on the vehicle, a jack hawng the cylinder thereof pivotally ,engaged'between the supporting plates, a lever arm pivotally engaged between the supporting plates at a point below the jack, a pivotal conneotion between the ram of the jack and the lever, andmeans for conveying movement of the lever to the scraper blade.

ELLSWORTH W. AUSTIN.