US2151256A - Wheel scraper - Google Patents

Description

March 21, 1939. I AQWOLIIT 2,151,256

WHEEL SCRAP ER Filed April 1, 1938 2 Sheets-Sheet. 1

1N VENTOR.

BY ALEXA NDER WOLF ATTORNEY.

March 21, 1939.

- A. WOLF 2,151,256

WHEEL SCRAPER Filed April 1, 1938 2 Sheets-Sheet 2 INVENTOR. /ILEXA NDER Wow ATTORNEY.

Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE WHEEL SCRAPER Alexander Wolf, Lehigh, Kans.

Application April 1, 1938, Serial No. 199,531

4 Claims.

My invention relates to a wheel scraper and more particularly to a safety guard for the scraper and has for its principal object a mechanism associated with the scraping element functioning as a guard for the scraper blade while said blade is removing accumulated soil or the like from the periphery of the wheel, the accumulation being retained by a plurality of lugs spaced therearound, said lugs functioning as claws to resist slipping of the wheel during its traction, the power of which is lost when the accumulation of soil has reached the outer ex-' tremity of said claws but efficiently removed by the invention herein disclosed.

A further object of my invention is to provide a safety means carried in advanced position of the scraping end of the blade with respect to the direction of the wheel rotation, said means at the time of its contact with an abnormal deposit between the wheel rim lugs will retract against its forward tensioning means and auto- I matically draw the end of the blade to snug engagement with its adjacent side of the guard and rearward of its laterally turned end portion to avoid destruction of the blade or wheel fender to which the mechanism is attached.

A still further object of my invention is to pendently carry the scraping mechanism when disengaged and furthermore to engage the same by a simple and efli'cient means when conditions require its service.

A still further object of my'invention is to pro,- vide replaceable blades and means to attach the same to the free end of the blade carrying arm.

A still further object of my invention is to construct a scraper for propulsion wheels in such a way that its principle of operation is applicable to other, makes of wheel rims than illustrated herein and including pneumatic tires or the like.

These and other objects will hereinafter be more fully explained reference being had to the accompanying drawings forming a. part of this specification and in which like characters will apply to like parts in the difierent views.

Referring to the drawings:

Fig. 1 is a side view of the scraper mechanism.

Fig. 2 is a transverse view looking in the direction of arrow A in Fig. 1.

Fig. 3 is an opposite view of Fig. 2 looking in the direction of arrow B in Fig. 1.

Fig. 4 is a view looking in the direction of arrow C in said Fig. 1.

Fig. 5 is a side view of a rear portion of a tractor showing the installation of the scraper in its operative position and also its disengaged position by dotted lines.

Fig. 6 is a rear view of Fig. 5 illustrating the position of the scraper and a possible obstruction such as a rock wedged between the lugs of the wheel rim.

Fig. 7 is an enlarged fragmentary view of the wheel showing soil or other deposit carried between the lugs prior to its removal.

Fig. '8 is an enlarged view of the scraper blade adaptable to the cross sectional arc of a pneumatic tire.

Fig. 9 is a side view of Fig. 8.

Fig. 10 is a fragmentary view of a pneumatic tire showing the relative position of a scraper blade and guard element.

My invention herein disclosed consists of a bar I as carrying means for the structure as a whole and being secured to the fender D of a tractor propelling wheel later described. Secured to bar I and laterally extending therefrom is a pair of arms 2 spaced apart and bridged together by an element 3 medially positioned of the arms longitudinally. Rockably secured to the outer end of said arms is a yoke 4, said yoke having a guide element 5 secured to the inner side thereof, both ends of which are turned at a right angle to space the portion therebetween from the yoke to receive one end of a guard arm 6 slideable therein and extending rearward and therefrom suiiicient to receive an eye bolt I secured thereto, said eye functioning as a stop to retain the said arm in the guide and the eye of the bolt has one end of a coil spring 8 secured thereto while the other end is secured medially of stock 9 through the medium of an eye bolt ID as an anchor for its respective end of the spring. One end of said stock is hingedly connected to bar I through the medium of a wing I I secured to said bar. The free end of said stock 9 has a removable scraping blade I2 secured thereto by bolts I3, the said blade when excessibly worn may be replaced for further service.

In Fig. 5 is shown the normal working position of the scraper mechanism as retained by a spirally wound spring I4, one end of which is secured to bar I by an eye bolt I5 while the other end is secured by a similar bolt I6 to the stock 9a spaced distance from the end of the scraper blade by which means said blade is tensioned to engagement with the center Zone portion of the rim ll of the wheel avoiding contact with lugs I8, there being two rows of lugs around the wheel spaced apart in staggered relation and between which earth or other substance will collect as shown at E in Figs. 5 and 7. There is also a possibility of an element such as a rock may be wedged between the lugs as shown at F in Figs. 6 and 7 in which case the blade may fail to remove the element causing the blade or other parts of the scraper mechanism to break as well as mutilation of the fender and to avoid such accident I have arranged as heretofore described a guard, the obliquely bent portion of which as at G will contact the obstruction F forcing the guard element longitudinally which in turn will move the blade to engagement therewith rearward of the bend as shown by dotted lines H in Fig. 1 and whole lines in Fig. 7, said movement controlled by a pair of link elements [9 pivotally connecting said guard and stock of the scraping blade, the rocking movement of which is shown by dotted line J which controls the movement of the said elements 6 and 9 as indicated by their respective dotted lines K and L and the said safety guard 6 is subject to retraction to its normal position as shown by whole lines in Fig. 1 through the medium of spring 8 which the said spring l4 is means to cause engagement of the scraper blade with the rim of the wheel substantially as shown in Figs. 1 and 5, and by detaching said spring it the structure will be disengaged and pendently carried as shown by its respective dotted lines in Fig. 5.

In Figs. 8, 9 and 10 is illustrated amodification of the scraper blade, the latter being arcuate in form as at 26, the arc of which is in parallelism with the tread 2| of a rough tread pneumatic tire functioning as means to remove earth accumulation from the said tire. The said blade is likewise protected by the guard element 6 the latter being shown in Fig. 10 and the said arouate blade is replaceable as above described for blade l2, and such other mo a'zifications may be employed as lie within the scope of the appended claims.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a wheel scraper, a bar, a stock hingedly connected to the bar, a scraper blade connected to the other'end of the stock, arms having their corresponding ends secured to the bar, a yoke pivotally carried at the other ends of said arms, a guard, one end of which is slidably carried by the yoke and rockable therewith, links pivotally connecting said guard and stock near the free ends thereof as means to move the corresponding free ends of said guard and blade to close engagement with each other when the guard is moved longitudinally, a spring connecting the guard and stock as retracting means for the guard separating said free ends thereof, a spring secured to said bar and said stock as tensioning means for the blade and guard simultaneously toward the rim of a wheel.

2. In a wheel scraper, a stock and a guard coactingly arranged to remove substance from the rim of a wheel, a removable blade connected to one end of the stock, the said guard having a lateral bend at its terminating end adjacent the blade, means to carry the other end of said guard and stock in working relation to the wheel, means to move the blade toward the guard when said guard is impinged by abnormal obstruction carried by the wheel.

3. In a wheel scraper, in combination with the lugged wheel of a tractor and wheel fender, a structure of the classdescribed comprising a stock and a removable blade secured to the end thereof adjacent the wheel, aguard having a lateral bend of its end portion adjacent the blade and being directed theretoward, links pivotally connecting said stock and guard a spaced distance from their respective bend and blade, a hinge arrangement on the other end of the stock, means to secure said arrangement to the fender of the wheel, a yoke and means to pivotally connect the same, said means secured to the first named means, means in the yoke to engage the other end of the guard slidable therein, a

spring secured to the stock and the first said spring to permit longitudinal movement of the' guard in the other direction to rock the blade to engagement therewith through the medium of said links.

4. In a Wheel scraper, in combination with the propelling wheels of a tractor and fenders for the wheels, ,a pair of wheel scraping mechanisms,

each carried by its, respective wheel fender, and each structure comprising a stock and a remov able blade on its end adjacentthe wheel, a guard rockably connected by link elements adjacent the blade and corresponding end of the guard, said end portion having a bend toward the blade in an 7 advanced position, means to rockably carry the other end of said guard and stock in spaced relation from each other and the said means being carried by its respective wheel fender, the said guard to move longitudinally in its respective carrying means and theretoward rocking the links to move said scraper blade in contact with the guard inward from its bent end portion, a spring to retract the movement of the guard for normal engagement of the blade on the wheel, a spring to rock the free end of said guard and blade simultaneously to engagement with the Wheel, and the last said spring when detached will disengage anism will be free and pendently carried,

ALEXANDER WOLF.

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