US2643599A

US2643599A - Cultivating and tilling machine

Info

Publication number: US2643599A
Application number: US96590A
Authority: US
Inventors: Wharton William
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-02-10
Filing date: 1949-06-01
Publication date: 1953-06-30
Anticipated expiration: 1970-06-30

Description

June 30, 1953 w. WHARTON 2,643,599

CULTIVATING AND TILLING MACHINE Filed June 1. 1949 I 2 Sheets-Sheet l June 30, 1953 w WHARTON 2,643,599

CULTIVATING AND TILLING MACHINE Filed June 1, 1949 2 Sheets-Sheet 2 FIG-4.

M MW" 7".

Patented June 39, 1953' CULTIVATING AND TILLING MACHINE William Wharton, Hadley Wood, near'Barnet, England Application June 1, 1949, Serial No. 96,590 In Great Britain February 10, 1948 1 Claim.

The present invention relates to cultivating and tilling machines of the manually controlled type, and more particularly to the tynes employed to break up the earth.

According to this invention a machine is furnished with a pair of tynes rotatable by a motor or other prime mover supported on a wheeled carriage, and to this end, each of the tynes consist of a spindle having formed integral therewith two or more longitudinally spaced plates or blades so disposed as to be inclined both to the axis of said spindle and to a plane normal thereto.

The primary function of the plates located near the lower ends of the tynes, hereinafter called the leaders, is to constitute self-travelling or feeding means whereby the tynes and the cultivator carriage on which they are mounted are moved forward when the leaders have been fed into the ground, and primary function of the plates located above the leaders, hereinafter called the followers, is to dig or turn over the earth in the region of the position entered by the leader.

If desired the leadingpart of each tyne may have a secondary function of assisting in the dig-' ging or turning over operation, whilst similarly the followers may assist in ensuring execution of the self-travelling operation during the latter part of each feeding movement into the earth.

In the accompanying drawings which illustrate this invention:

Figure 1 is a front elevation of a power actuated machine,

Figure 2 is a front elevation of a pair of tynes constructed in accordance with this invention,

Figure 3 is an underneath plan thereof,

Figure 4 is a front elevation of a pair of tynes of a further modified form, and,

Figure 5 is an underneath plan thereof.

The machineillustrated in Figure l-comprises a wheel carriage having a frame A mounted on wheels B, a pair of tynes C rotatably mounted on the frame and a motor D, also mounted on the frame, for rotating the tynes.

As illustrated in Figures 2 and 3, the pair of tynes comprises two spindles i, i each having formed integrally therewith two longitudinally spaced plates so formed as to be inclined both to the axis of the spindle and to a plane normal thereto, one plate 2 is positioned adjacent the lower or leading end of the spindle, a further and larger plate 3 being disposed above and approximately in the opposite sector to that 0ccupied by the plate 2. Alternatively the plates as shown may be replaced by longitudinally spaced plates which are constituted by helicoidal surfaces with the leading or lowermost plates subtending a smaller arc than that of the upper plates.

In order to prevent rotation of the gear casing forming part of the cultivating carriage when driving the tynes, the latter are arranged in pairs whilst one tyne, as shown in the drawings, constitutes, the mirror image of the other tyne and is rotated in the opposite direction thereto.

For the purpose of preventing the accumulation of weeds around the spindles I and l of the respective tynes it is proposed to locate said spindles in loose sleeves 6 suitably interconnected by a plate 'I to prevent the rotation of the sleeve 6.

In the construction illustrated in Figures 4 and 5, the spindles I and I are each furnished with three plates or blades, the lowermost blades 8 when the machine is'in use are in the leading position and when cutting in a forward and downward'direction they will pull the machine forward. Whilst this action is taking place, the second pair of blades 9 are rising in a more or less horizontal position and lifting the earth.

When the leading blades 8 are rising they are lifting the earth and the secondary blades 9 occupy a more or less perpendicular position and resist any tendency for the machine to travel backwards. 9 are travelling forwardly and downwardly they are contributing to the forward propulsion of the machine, but to a lesser extent, due to the earth being loose in the area in which they are working resulting from the breaking up action of the blades 8.

The third pair of blades Hi cover a somewhat Wider area than the leading blades 8 and while said blades I!) contribute in a lesser degree to the propulsion of the machine, they are primarily intended for breaking up clods of earth. The leading edge of the blades I0 is in the form of a spiral to avoid picking up loose weeds and the like.

What I claim is:

An earth-breaking unit for a cultivating and tillingmachine, comprising in combination, a pair of spaced parallel downwardly extending rotary tyne spindles adapted to dig into the ground in axial direction, each of said tyne spindles being formed with at least two earth-breaking plates spaced in axial direction of the corresponding tyne spindle, each plate laterally projecting from the corresponding tyne spindle at an angle to the axis of said tyne spindle and to a plane nor- When however the secondary blades mal thereto, the plates of one of said tyne spindles being arranged opposite to and at the same distance apart as the plates of the other of said tyne spindles and disposed so as to constitute mirror images of the plates of said other tyne spindle with regard to a plane of symmetry parallel to said tyne spindles: a pair of sleeves, each sleeve of said pair of sleeves being loosely mounted for limited axial movement on the upper end of one of said tyne spindles above said earthbreaking plates; and a memberrigidly connecting said pair of sleeves so as to prevent rotation thereof whereby to prevent accumulation of weeds on the spindles.

WILLIAM WHARTON.

References Cited in the file of this patent UNITED STATES PATENTS Name Date Gardner et a1. July 20, 1926 FOREIGN PATENTS Country Date France Dec. 9, 1921 Switzerland May 1'7, 1930 Australia Sept. 3, 1936