US1413281A - Lister plow - Google Patents

Description

A. S. KROTZ.

LISTER PLOW.

APPLICATION man MAY26| 1919.

Patented Apr. 18, 1922.

2 SHEETSSHEET I.

A. S. KROTZ.

LISTER PLOW.

APPLICATION FILED MAY 26, 1919. I

Patented A ma-18, 1922.

2 SHEETS-SHEET 2- Ira 0c do f ALVARO S. KROTZ, OF J ANESVILLE, VTISCONSIN, ASSIGNOR T0 JANESVI MACHINE COMPANY, OF JANESVILLE, WISCUNSIN, A CORPORATIGN GQWIN.

PLOW.

inazlaaeii.

Application filed may 26,

To all whom it may concern:

Be it known that I, ALVARO S. Knorz, a citizen of the United States of America, and a resident of Janesville, Wisconsin, have invented a certain new and useful Improvement in Lister Plows, of which the following is a specification.

This invention relates to wheeled plows, and more-particularly to those of the type ordinarily called listers, being equipped with one or more lister plows, preferably two, arranged side by side, as in the case of what are commonly called two-row listers or wheat land listing plows, such as those employed for ridging the soil in the ordinar and well known manner. I

enerally stated, the object of the inven-' tion-is to provide a lister plow of the foregoing general character, having certain improvements which will tend to insure greater strength and rigidity than heretofore; to provide improved means for controlling the working depth of the plows; and to provide certain details and features of construction and combinations tending to increase the 'generalefliciency and the desirability of a two-row lister plow of this particular construction.

To the foregoing and other useful ends the invention consists in matters hereinafter set forth and claimed.

In the accompanying drawings Fig. 1 is a plan of a two-row wheat land listing plow embodying the principles of the invention.

Fig. 2 is a side elevation of said plow, showlng one of the front disks partly broken away to bring into view the means by which the front portion of the frame is supported by the disks. I p

Fig. 8 is a fragmentary detail view showing a portion of the frame oonstruction.

Fig. 4 is an enlarged detail section on line 44 in Fig. 1.

Fig. 5 is an enlarged detail view showing the connection between the frame and the front end of one of the plow beams.

Fig. 6 is an enlarged detail section on line 66 in Fig. 1.

Fig. 7 is an enlarged detail section on line 7-7 in Fig. 1.

Fig. 8 is an enlarged detail section on line 8-8 in Fig. 1.

As thus illustrated, the invention comprises a rigid frame formed by side bars 1 LLE 0F WIS- Specification of Letters Patent. Patented A101. 18, T922.

1919. Serial in. 299,761.

which converge to the casting 2 at their forward ends, being held together by the bolts 3 which extend through said casting, and it being observed that the latter is an arm projecting from the rear side of the vertically disposed sleeve or swivel bearing 4, as will hereinafter more fully appear. The parallel rear end portions 5. of the two side bars are rigidly connected together by is supported by a pair of disks 1O suitably mounted on the lower end of the pivot post 11, which latter extends upwardly through the sleeve or swivel bearing 4, whereby the two disks form a sort of truck which turns about a vertical 'axis to steer the two-row lister plow to the right or the left. The clevis 12 is rigid with the post 11 and is formed with holes 13 to receive the bolts 14 by which the tongue or pole 15 is pivotally supported on the clevis in position to swing up and down in the usual and well known manner. In this way the pole controls the front of the truck and turns the disks 10 to the right or the left to guide the plow in either direc- I known form, being the ordinary double mold board or lister plows employed for purposes of this kind. These plows have, forwardly extending beams 17 provided with brackets 18 which are secured to the beams by bolts 19, and bolts 20 which extend downwardly through openings 21 in the transverse bar 6 which forms a part of the rigid main frame. In this way, and by adjusting the bolts 20 from one hole 21 to another, the distance between the two plows can be changed or varied to suit the requirements. A transverse angle iron beam or bar 22 is secured by brackets 23 to the under side of the frame side bars 1, at a point immediately in rear of the casting 2, so that the end portions of this angle iron 22 project for some distance, being provided with holes 24 to receive the bolts 25 by which the brackets 26 are connected to the angle iron bar 22, these brackets 26 being connected by bolts middle portion of the transverse bar .6, the

seat being preferably in position to enable the driver to place his feet on the transverse bar 22 when the plow is in use.

For the purpose of supporting the plows in the rear end of the body frame, crank axles 30 are provided and mounted to turn in bearings 31 on the main frame, and in bracket bearings 32 suitably secured to the transverse bar 6; and it will be seen that the crank arms 33 of these axles extend forward and downward to the out-turned spindles 34 upon which are mounted the vehicle wheels 35 which support the body frame and plows. The bracket bearings 32 are provided with racks 36, and hand levers 37 are keyed to the crank axles 30 by means of removable pins 38, or in any suitable manner. The crank axles have holes 39 at differentpoints in the length of each axle to receive said pins, so that these axles can be adjusted endwise in their bearings to change or vary the distance between the two vehicle wheels. Thus each hand lever 37 engages one side of a bracket bearing 32, to prevent endwise displacement of theaxle in one direction, and an adjustable collar 40 engages the same hearing at the other side, these collars being adjustably held on the axles by beams similar to those used for keying the levers to the axles; or, of course, said levers and collars can be held in place by ordinary set screws if desired. Each lever has a locking device 41 for engaging the adj acent curved rack '36, and these locking devices are controlled by short handles 42 pivoted on the ends of the hand levers. In this way, by unlatching the hand levers from the racks 36, the two hand levers can be employed by the driver for rocking the axles 30 in their bearings, and for thereby raising and lowering the plows. In order to sink the plows into the ground, the two hand levers are unlatched from the racks and allowed to swing backward, and when the plows are the desired distance in the ground, the depth can then be maintained by latching the hand levers to the racks. \Vhen it is desired to raise the plows out of the ground, the two hand levers are pushed forward. Springs 43 connect the levers 37 with the rront transverse bar 22, and help to raise the plows out of the ground when the hand levers are pushed forward. These springs, however, are not so strong but that the levers 37 can be easily pulled backward when it is desired to lower the plows into the ground.

In order that the front end of the body frame may be adjusted up and down, a collar 44 is provided on the post 11, being adjustably held thereon by a set screw 45, and being provided with a hook 46 for enga ing the flange 47 formed on the lower en of the sleeve or swivel bearing 4, whereby the sleeve 4 is supported by the collar 44, and is prevented by said hook from rising on the post. In this way, as stated, the front end of the main body frame can be readily raised and lowered to suit the requirements of different circumstances.

The twoforwardly converging side bars 1 and the rear transverse bar 6 form a rigid main body frame, the forward ends of said bars 1 being rigidly connected together, so that a forwardly tapered main frame is provided. The rear ends of these side bars 1, and the bar 6, support the bearings in which the crank axles 30 are supported, so that the cranks 33 extend forward, whereby the two plows are raised and lowered when the main frame is raised and lowered by the rocking of the crank axles. The driver pushes forward on the levers 37 to raise the body frame, and the seat 28 is arranged in position to facilitate this manipulation of the hand levers. The transverse bar 22 provides a. forward point of support for each plow beam 17, of course, and serves also to brace the forwardly tapered body frame, whereby the said plow beams and the body frame form a very rigid structure which is adapted to advantageously withstand the strains incident to the action of the plows in the ground while the machine is moving forward. Even without the transverse bar 22, the body frame is strong and rigid and complete, and this bar adds to the strength and rigidity of the body frame and provides for the convenient support of the forward ends of the plow beams, in the manner shown and described.

What I claim as my invention is 1. In an agricultural implement, the combination of means forming a rigid body frame which tapers toward its front end, means to support the forward end of said frame, wheels to support the rear end of implements secured to the rear end portions of said beams. I

2. A structure as specified in claim 1, said main body frame having a transverse rear end member which extends under said implement beams.

3. A structure as specified in claim 1, said transverse member extending under the main body frame. so that the opposite end portions of said member extend beyond the frame,'the implement beams being connected to these projecting end portions.

4. A structure as specified in claim 1, said main body frame comprising a transverse rear end member, forwardly converging side bars rigid with said transverse draft member, means to rigidly connect the forward ends of said converging side bars together, and means to rigidly connect the side bars to the'end portions of said transverse rear end member.

5. A structure as specified in claim 1, said implements for the rear ends of said beams consisting of a double mold-board lister plow for each beam,-said plows being spaced a distance apart.

6. In an agricultural implement of the class described, the combination of a main body frame having forwardly;converging side bars, a vertically disposed socket secured between the forward end portions of said bars and forming a swivel bearing at the forward end of said frame, a pivot postextending upwardly through saidsleeve, saidl post being adapted to turn or oscillate in said sleeve, means traveling on the ground to support the lower end of said pivot post,

means disposed below the frame and whereby said sleeve is adjustable up'and down on saidpost, and is held in adjusted position thereon, a clevis rigid .with the upper and lower end portions of said post, and a draft I connection attached to said clevis.

7. In an agricultural implement of the class described, the combination of a main body frame, a pair of lister plows having I beams eachv supported at front and rear points by said frame, means to support the forward end of said frame, crank axles disposed behind the rear points of support for said beams and mounted in alinement at the rear end of said frame, each axle having a forwardly extending crank arm, a vehicle; wheel for each crank arm, and means including'hand levers secured to the crank axles to control said wheels, and to thereby raise and lower the plows out of and into the ground.

8. In an agricultural implement; the combination of forwardly converging side bars, a rear transverse bar rigidly secured to the rear end portions of the side bars, means to connect together the forward end portions of the side bars,so that a rigid and forwardly tapered main body frame is provided, bearings on the rear end portions of the side bars, bearings on said transverse bar, crank axles mounted in sald bearings, with the cranks of and a wheel truck to support the front end said axles extending forward at opposite sides of the body frame, and an implement carried by the body frame and adapted to enter the ground when the frame is lowered, in combination with a transvese bar rigidly secured to the forward portion of said body frame, and means to connect this forward transverse bar to said implement.

9. In an agricultural implement, the combination of forwardly converging side bars, arear transversebar rigidly secured to the rear end portions of the side bars, means to connect together the forward end portions of the side bars, so that a rigid and forwardly tapered main body frame is provided, bearings on the rear end portions of the side bars, bear.- ings on said transverse bar, crank axles mounted in said bearings, with the cranks of said axles extending forward at opposite sides of the body frame, and an implement carried by the body frame and adapted to enter the ground when the frame'is lowered,

said implement comprising a plow having a beam which extends forward over said rear a transversebar rigidly secured to the under I .side of the forward portion of said body frame to brace the latter and provide a forward support for the front ends of the plow. beams. J

10. In an agricultural implement, thecombination of a main framecomprising transverse front and rear members spaced apart 'a distance, side members converging for,-

ward from the outer ends of said rear transverse member and having their front ends- I connected together a distance ahead of-said front transverse member, means to rigidly connect said transverse member, to the converging side members, so that the ends ofthe front transverse member project from the frame at opposite sidesthereof; implement beams supported ontherear transverse member at points between said converging side members and connected at their forward ends to the projecting end portions of the front transverse member; supporting wheels for the rear end of said bodyframe; and draft means for the front end of said implement.

. 11. A structure as specified in claim 10,

and means whereby to vary tween the implement beams.

12. A structure as'sp'ecified in claim 10,

the distance be- I of said forwardly tapered body frame.

13. A structure as specified in claim 10,

comprising crank axles for said wheels, and

means to rock said axles to raise and lower the implement. i v

Signed.

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