US1621739A - Soil pulverizer - Google Patents

Description

Filed April 23, 1925 2 Sheets-Sheet l INVENTOR. 1.54/2 all er A TTORNE Y.

. 1,521,739 March 22,1927 J. PARKER .SOIL PULVEHIZER Filed April 25, 1925 2 Sheets-Sheet 2 I N TOR. J56 l-A er' A TTORNEY.

Patented Mar. 22, 1927..

FFICE.

SOIL "EULVEEIZER.

Application filed. April 23, 1925. Serial No. 25,213.

This invention relates to soil pulverizing machines and more particularly to that type of machine where the pulverizing of the ground is accomplished by the forward movement of two sets of disks, each set being aligned but arranged in staggered relation to each other thereby insuring a complete pulverizing of the ground passed over.

An object of my invention is to provide a soil pulverizing machine in which the center of gravity is located at some point in rear of the center line of the main frame.

A further object of the invention is to provide a soil pulverizing machine that will operate efficiently if it is found necessary to traverse uneven ground.

A still further object is to provide a machine of the class mentioned whereby the rearwardly aligned set of disks are vertically movable as a whole against a spring action thereby insuring the disks against breakage if a stone is encountered.

With these and other objects in view my invention consists of the principal features as shown in the drawings described in the specification and claimed in the claims.

In the drawings:

Fig. 1 is a perspective view of my machine.

Fig. 2 is an end elevation thereof.

Fig. 3 is a top plan view thereof.

Referring more particularly to the drawings wherein similar numerals refer to similar parts throughout the several views 1 designates a main frame consisting of the transverse bars 2 and the end bars 3. The end bars 3 have flangedends 4: that are adapted to be secured to the transverse bars 2 by rivets or bolts 5. The transverse bars 2 are preferably formed of angle iron while the end bars 3 are preferably castings. The end bars 3 are also provided-with the inturned flanged portions 6 that are in turn secured to the transverse bars 2. This construction insures a very stiff and rigid main frame. Extending downwardly from the castings 3 are the arms 7 and 7 forming near their lower extremities bearings for an axle, said axle carrying thereon the pulverizing disks 8. Pivoted to the arms 7, at the point 9, are the bifurcated arms 10, said arms being provided with the rearwardly extending portions 11, said portion 11 having formed therein suitable bearings for carrying another axle on which are mounted the pulverizing disks 12. It will be noted from Fig. 3 that the disks 8 and 12 are arranged in staggered relation to each other so that the ground passed over will be completely pulverized.

Pivoted between the bifurcated arms near their forward extremities are the guide rods 17. Located adjacent the axle bearings in the arms 7 and 7 are the forwardly extending lugs 14 having sockets 15 formed therein for receiving the lower end of the compression springs 16. The upper ends of the compression springs 16 bear against the collars 13 said collars being adjustably mounted on the guide rods 17 and held in position by the set screws 13. The pressure of the springs 16 acting against the bifurcated arms 10 tends to keep the pulverizing disks 12 in engagement with the soil to be worked but allowing the said disks 12 to rise out of engagement with the soil if any solid obstruction such as a large rock is encountered. The guide rods 17 are positioned centrally of the springs 16, said rods being slidably mounted in the lugs 14:. As best seen in Fig. 2 stops 18 are formed in the castings 3 providing a means adapted to limit the upward movement of the bifur cated arms 10. It will be seen in Fig. 2 that the pivot points 9 being located closer to the center line of the disks 12 than they are to the forward ends of the bifurcated arms 10, the upward thrust of the springs 16 will cause a greater amount of downward pressure to be exerted on the disks 12 thus keeping said disks in working engagement with the soil even if the soil to be Worked is quite hard. Considerable variation of the pressure on the disks 12 may be obtained by adjusting the collars 13 by means of the set screws 13'.

Positioned forwardly of the main frame 1 are the steering wheels 19 mounted on the axle 20. The axle 20 carries a swivel connection 21 and the king pin 22. The upper end of the king pin 22 passes through an opening in a bracket 23, said bracket 23 being in turn secured to the forward end of a beam 24. The rearwardly extending portion of the beam at is rigidly secured to the main frame 1. Straddling the bracket 23 and fastened to the king pin 22 is a U shaped bracket 25. Pivoted to the bracket 25 is the drag link 26 to which the draw bar is adapted to be secured. A pair of brace arms 27 are secured at their forward ends to the brackets 23 and at their rear ends to the transverse bars 2 of the main frame 1.

Situated near the rear end of the beam 24: and secured thereto by means of the bolt 28 is a seat 29. The seat 29 may be adjusted longitudinally of the beam 2% by changing the location of the bolts 28 in the holes 30. It will be noted from Fig. 2 that the weight of the driver while riding in the seat will be atsome point rearwardly of the center line of the main frame. As will be apparent modifications may be made within Wide lim its Withoutactually departing from the principles of my invention.

From the foregoing description it becomes evident that the device is simple and efficient in operation, will not easily get out of order, is'composed of few parts and is of consequent low manufacturing cost and provides a device which accomplishes the objects described.

Having thus fully described my invention its utility and mode of operation, what I claim and desire to secure by Letters Patent is a 1. A soil pulverizing machine comprising a main frame having depending end portions, bearings provided in the respective end portions, a series of disks, a shaft for the disks supported in the said bearing, a bifurcated arm pivotally supported on each of the said depending portions in the bifurcation of which the end portion is positioned, the opposite end of each of the said varms having a bearing, a secondseries of disks positioned in staggered relation to the said first series, a shaft therefor carried in the said arm bearings, a spring at the bifurcated end of each arm tending to raise the said end and to force the second series of disks downwardly, and a stop engaged by the said bifurcated end limiting the downward movement of the second series of disks.

2. In a soil pulverizing machine, a frame member having depending end port-ions, bearings provided therein, a series of aligned disks supported by the said bearings, a bifurcated arm pivotally mounted on each depending portion, the two portions of which arms are positioned on opposite sides of the respective depending portion, the said pivotal point of the arm being to the rear of and above the said bearing, a rod pivotally supported at the forward end of each bifurcated arm, each bearing being provided with an apertured portion in which the respective rod may play, a coiled spring on the said rods tending to force the bifurcated end of the respective arm upward, a series of aligned disks in staggered relation with the first series carried by the opposite end of he bifurcated arms to the rear of the first series, a wheel supported tongue extending forwardly of the said frame, the mounting of the two series of disks being such that when the said tongue is held in horizontal position on a practically level surface the springs are placed under compression. V

3. In a soil pulverizing machine, the combination of a frame having depending end portions and a. tongue member extending forwardly thereof, bearings provided in the said end portions forward of the center line of the frame, an arm pivoted to each of the said end portions to the rear of av vertical line passing through the bearings and at a point above the said bearings, the said arm having a bifurcated end in which the respective end portion of the frame is positioned, bolt connecting the terminals of the said bifurcated ends, a rod supported on the bolt. the said bearings each having an aperture'd portion extending forwardly thereof in which the rod may play, a coiled compressing spring on the rod, the opposite ends of the said arms each having a bearing, a series of aligned disks, shaft therefor supported in the arm bearings, the second series of disks being in staggered relation with the first series, a steering Wheel pivotally mounted at the forward end of the tongue, a seat member for the operator supported on the machine and positioning the weight of the operator to the rear of the axis of the first series of disks whereby pressure is applied to the second series tending to compress the sai l springs.

In testimony whereof, I sign this speeification.

JOHN PARKER.

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