US2571285A - Press wheel scraper - Google Patents

Description

Oct. 16, 1951 w. P. OEHLER' PRESS WHEEL SCRAPER Filed Feb. 4, 1949 m T. m m

WILL/AM R OEHLE'R Patented Oct. 16,

& Company, .Moline, Ill.,

' Illinois a v corporation 1 of Application February 4, 1949, Serial Nth 74,692

. The present. invention cultural implements and more'particularly to planters and other implements having groundengaging press wheels.

The object and general nature of the present invention is the provision of new and improved wheel scraper means for the press wheels of planters and the like, and more particularly it is a feature of the presentinvention to provide individual press wheel scrapers held in contact with the wheel rims and the press wheels by spring pressure. More particularly, an important fea ture of this invention, is the provision of a new Wheel scraper means which includes, a simplified mounting in which a single part serves to hold,

each scraper blade inthe proper position and to accommodate adjustment of the blade position.

Still further, another feature of this invention is,

the provision .of a new and improved scraper bracket or frame and a new and improved blade holder.

These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed dESCIlptlOIhtfikGn in conjunction with the accompanying drawings, in which:

Figure 1 is a fragmentary perspective view of. a planter in-which the principles of the present Figure 3 is a fragmentarydetail viewof the press wheel axle and associated parts.

Figure 4 is a perspectiveview of one of the scraper blade holders.

Referring now more particularly to Figure 1, the press wheel frame is indicated inits entirety by the reference numeral I and includes a pair of laterally spaced, generally fore and'aft extending press wheel frame bars 2 and 3. The rear end portion of each of the press wheel frame bars is turned laterally outwardly to form an abutment or stop 4 to which reference will be madebelow. The rear portion of each press wheel frame bar also is apertured, as at 5, Figure 3, to receive the reduced end 6 of a press wheel shaft or axle-1 upon which a pair of presswheels. 8 are'mounted for individual rotation. Each press wheel 8 includes' aconical rim or tread section 9 anda hub section I I journaled on thecentralor larger portion of the shaft I, and the rear portions of the press wheel frame bars 2 and 3 bear against the relates generally to agri f 6"(llaims' (01. 280-158) I frame and the press wheel scrapers and associated I end or shouldered portions I2 of the shaft or axle 'I when the clamping nuts I3 are tightened, as best shown inFigure 3, whereby the axle I is fixedagainst rotation relative to the press wheel frame bars 2 and 3. Th outer reduced end portions 6 of the axle are threaded, as at I4, to receive the nuts I3, and the latter when tightened act through the slotted ends of a scraper frame or bracket, referred to below in detail, whereby the latter is also held against rotation relative to the press wheel frame I.

The scraper frame or bracket is indicated in its entirety by the reference numeral I6 and comprises a generally U-shaped part having end portions H, which are slotted, as at I8, and a central portion l9 which includes laterally inwardly an gled scraper-receiving sections 2L,

A scraper blade unit, indicated in its entirety by the reference numeral 25, is mounted on each of the angled scraper bracket sections 2 I, as best shown in Figure 2. Each scraper blade unit 25 includesa scraper blade 26 having a lower angled edge 21, which may be beveled or sharpened, if desired, and an upper portion having a pair of apertures 28. A blade holder 30, best shown in Figure, 4, is interposed between each blade 26 and the associated scraper bracket section 2I. Each blade holder 30 includes a central section 3 I, apertured as at 32, and having a pair of rearwardly extending, laterally spaced, vertically disposed flanges 33 and 34 and a pair of forwardly extending transverse vertically spaced flanges 35 and 36; The associatedblade 26 is adapted to lie snugly between the vertical flanges 33 and 34, and, as best shown in Figure 2, the holder 35 fits snugly onto the associated scraper bracket section 2| by virtue of the flanges 35 and 36 which overhang the upper and lower edges of the bracket'sectio'n' 21. In each scraper blade unit 25, an attaching pin 4I having a head 42 is disposed 'in one of the blade apertures 28, the aperture 32 in the associated holder 36, and an aperture 43 in the associated scraper bracket section 2 I. The

end of the pin 4| opposite the head 42 is aperthe latter, acting in conjunction with the associated flanged holder 30; serves to prevent the blade from being displaced either laterally or verticallyrelative to the supporting bracket I6.

The spring 45 which is disposed about each pin 4I between the head 42 thereof and the rear face of the blade 26, accommodates some movement of the blade relative to the associated press wheel 8, whereby the lower edge 21 of the blade may follow the rim or tread section 9 of the associated wheel without skipping. If the lower end of the blade 26 should wear, the blade may be lowered by removing the pin 4| and placing it in the upper hole 28. If desired, the blades 26 may have more than two holes 28.

The position of the blades 26 relative to the wheels may also be adjusted by loosening the nuts 13 and shifting the supporting bracket [6 toward or away from the shaft I, the threaded ends 6 of which extend through the slots 18 in the ends ll of the scraper bracket l6, whereby the degree of pressure with which the scraper blade 26, acted on by the springs 45, bear against the wheels may be varied. The lower edges of the end sections I! normally lie against the outturned press frame bar portions 4 whereby the scraper frame [6, although fixed to the framebars 2 and 3 by the clamping nuts I3, may be prevented from swinging downwardly aboutthe axis of the shaft 7 and relative to the press wheel frame I. 7

While I have shown and described above the preferred structure in which the principles of the present invention have been incorporated, it is to' be understood that my invention is not to be limited to the particular details shown and described above, but that, in fact, widely different means may be employed in the practice of the broader aspects of my invention.

What I claim, therefore, and desire to secur by Letters Patent is:

1. A scraper unit for a ground wheel, comprising a scraper frame including an apertured section, a scraper blade having an aperture therein,

a scraper blade holder including apair of spaced apart blade-engaging flanges receiving said blade therebetween, a pair of spaced apart frameengaging flanges-receiving said scraper frame therebetween, and a central aperture lyinggenerally centrally between both said frame-engag ing flanges and said blade-engaging flanges, and

a pin extending through the apertures in said blade, holder and frame section for holding the parts of the scraper unit together.

2. A scraper unit as defined in claim 1, further characterized by said flanges being of sufl'icient length to hold said blade against turning rela-' tive to the holder and said holder against turn ing relative to said frame section.

3. A scraper unit as defined in claim 1, further characterized by said blade having a plurality of spaced apertures whereby the blade maybe ad justed toward or away from said ground wheel. 4. A scraper unit for a planter press wheel means carried by a press wheel frame or the like which includes two laterally spaced, generally fore and aft extending frame bars, each of which at its rear end includes a laterally outwardly extending portion and, forwardly thereof, axle means rotatably receiving said press wheel means, portions of said axle means extending laterally outwardly of said frame bars, said outwardly extending portions being threaded and carrying clamping nuts thereon, said unit comprising a U-shaped scraper bracket having ends and a central section, scraper blade means resiliently car ried by said central section and movable relative to the latter toward and away from saidpress wheel means, said ends being slotted and disposed over the outwardly extending portions of said axle means, and said clamping nuts, when tightened, serving as means for fixing the slotted ends of said scraper bracket to said press wheel frame bars at points thereon forwardly of said laterally outwardly extending portions of the press wheel frame bars, whereby the latter are in a position to engage the lower portions of said scraper bracket ends so as to serve as Stops for holding the scraper bracket against downward movement relative to said press wheel frame bars, said slots accommodating movement of said scraper bracket toward and away from the axis of said press wheels, whereby the degree of pressure exerted by said resiliently mounted blade means against agricultural implement or the like having press wheels or the like and an apertured scraper-supporting bar, said scraper unit including a substantially flat rectangular member apertured generally centrally, a pair of spaced apart flanges along one pair of opp site edges of said member, said flanges being spaced apart a distance substantially equal to the width of said bar so that the latter may be loosely received between the flanges, a second'pair of flanges extending in'the opposite direction with respect to said first flanges and flxed to the other pair of opposite edges of said member, the planes of both flanges lying generally normal to the general plane of said member, a scraper blade lying between the flanges of said second pair and having an aperture adapted to register with the apertures in said strap and said flanged member, a connector extending loosely through all of said apertures and connected at its inner end with said bar and havi its outer end spaced from said blade, a spring disposed between said outer end of the connector and the outer face of said blade, and the width of the flanges of both of said pairs exceeding that of said bar and said blade. respectively, whereby said blade is capable of limited rocking relative to said member and the latter is capable of limited rocking relative to said bar.

P. OEHLER.

REFERENCES .CITED The following references are of record in the

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