US1135305A

US1135305A - Cultivator.

Info

Publication number: US1135305A
Application number: US87330714A
Authority: US
Inventors: Victor Linderblad
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-11-21
Filing date: 1914-11-21
Publication date: 1915-04-13
Anticipated expiration: 1932-04-13

Description

v. LINDERBLAD.

Patented Apr. 18, 1915.

2 SHEETS-SHEET 1.

THE NORRIS PETERS 60.. FHOTC-LITHO.. WASHINGTON. D. c.

V. LINDERBLAD.

GULTIVATOR.

APPLICATION FILED NOV. 21, 1914.

Patented Apr. 13,1915.

ZBIIEETS-SH-EET 2.

THE NORRIS PETERS CO., PHOTO-LITHOY. WASHINGTON, n. c.

CULTIVATOR. i 1 s VICTOR LINDTEBLBLAD, O3? STOGKHOLM, $WEDEN.

treason.

Application filed November 21, 19145.

To all whom it may concern:

Be it known that T, VICTOR LINDEBBLAD, a citizen in the Kingdom of Sweden, residing at Kungsgatan 70, in the city of Stockholm, Sweden, have invented a new and useful Cultivator, of which the following is a specification.

This invention relates to a cultivator the working parts of which consist of rotating wheels provided with. projections (knives, spades or the like) on the rim, said projections being adapted to operate in the soil in such a manner as to substitute plows, harrows etc. For this purpose and for making the work easy so that it can be done economically at a low cost for the power used, the projections are disposed in series, preferably two or more series on each wheel. In each series the first projection is straight. The other projections of each series are bent, some to the right and some to the left, the angle increasing successively rearward so that the top of each projection reaches farther from the vertical plane of the wheel than the foregoing projections of the same series. The projections may also be warped if nec essary. The radial distance from the shaft of the wheel to the top of all the projections may be equal so that all projections enter the soil to equal depth, but preferably such distance should be decreasing rearward so that the straight projection extends farthest.

In operation the straight projection which first comes into work cuts a deep score in the soil, the first bent projection works upon a narrow string of soil immediately adjacent to said score on one side of it. The second bent projection works upon a similar string on the other side of the score. The third bent projection works upon a new string of soil next to the first one, the fourth bent projection upon another string of soil next to the second one and so on. Thus each projection has only a narrow string of soil to work upon, whereby the work will be easy and the consumption of power small.

The rim of each wheel is preferably made in sections or se ments which are fastened rigidly or otherwise to a hub passed on one or more rotary horizontal shafts. In the rigid type the connections between the hub and said segments may consist of spiders, crossed arms or the like and these spiders or arms may also serve as connections between the segments themselves. In the nonrigid type the connections between the hub and Specification of Letters Tatent.

l atented Apr. T3, T915...

SeriaI No. 873,307.

the segments and between the segments themselves may consist of springs or the l ke.

One of the advantages attained by this construction is that a damaged wheel can be easily repaired at a low cost.

The nonrigid construction is intended to be used in soil, where stones, roots or other obstacles are immixed, and the object of this construction is to enable the wheels to yield when engaging such obstacles.

In the accompanying drawings, which show wo examples, Figure 1 is a side View and Fig. 2 an axial section of a wheel of the rigid construction, while Fig. 3 is side view and Fig. 4 axial section of a wheel of the nonrigid construction. Figs. 5 and 6 show a suitable shape of the top of the teeth. Fig. 4t shows also the hubs of two other cultivating wheels.

(,4 is the rotary shaft, on which the hubs Z) of the wheels are passed so as to partake in the rotation.

In Figs. 1 and 2 the hub b has two pairs of crossed arms 1 6, one pai at each end of the hub, which arms are fixed to the rim of the wheel by means of bolts and nuts or rivets or the like. The rim consists of ring segments r. Each end of each arm is is connected to two segments 1" as shown.

The outer edge of each segment is split up into one or more series of teeth or tongues. The first tooth of each series is straight, the others are bent toward the sides, some to one side and the rest to the other side, in such a manner that every bent tooth will reach to a point more distant from the vertical plane of the wheel than the foregoing teeth of the same series. The radial distance of the teeth from their top to the axis of the wheel is preferably so measured that this distance is largest at the straight tooth and successively diminishes toward the other end of the series. The straight tooth thus will make a deep score in the soil and every following tooth will work upon a narrow string of soil next to the string worked by a foregoing tooth of the same series. In this way the resistance will be diminished and the work facilitated.

It will be evident that teeth bent to one side from an originally straight line will not project so far from the axis of revolution of the wheel as when the teeth are straight. Consequently, the bent teeth are shown projecting a slightly less distance in the radial direction than the initial straight tooth in each series. In certain of the teeth the difference 'in length is not noticeable but if the last tooth, which is bent farther to the side, is compared with the straight tooth which is the first in the neXt succeeding series of teeth, the difference will be apparent. H

hen using a single row of wheels the length of the hub 'of each wheel is so measured that when the wheels are passed on the shaft so that the hubs touch each other, each wheel will work upon a string of soil immediately adjacent to the string worked by the next wheel, so that no intermediate string will be left unworked.

When using two or more parallelshafts a eaclrhaving a row of wheels the hubs should'be' longer, so that the wheels of a following shaft will work on strings of soil left untouched between the wheels of the foregoing shaft. i

In Figs. 3 and 4, where the segments are designated by a, the arms 70 are substituted by Springs 7'' passed on'studs b on the hub and pressing on the inner edge of the segments or upon a base formed or fastened thereon, the segments themselves being connected by other springs s soas to allow of yielding to some eXtent. Oblique springs 6 may be used between the hub and the segments for preventing a too strong bending of the radial springs 7. By this construction the segments are adapted to yield for heavy stones or roots or other obstacles in the soil. lhis adaptability may be increased by passing other springs c on the shaft a between the hubs Z) and said springs scan of course be used also'in therigid construction if desired.

It is obvious that one or more rows of yieldingwhe'els may be use'd simultaneously, and that a rotary cultivator of either the rigid" type or of the yielding type may be provided with or connected to plow-shares or other means adapted to make furrows or the like in the cultivated soil;

The shaft or shafts a may be mounted in a frame movable up and down so as to adjust the depth and lift the wheels above the soil, when desired. It will be understood that the transmission to the shaft- 64 can be'measure d so as to eifect a higher speed of this shaft and of the wheels thereon than the speed of the bearing or transporting wheels. The shaft a may for instance maketen full turns while thebearing wheels make a single turn,so that the score made by the" straight tooth of one series will be immediately continued by the score made of the straight tooth of next series and no Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents uncut spaces be left between them. Said transmission may be adjustable so as to render it possible to change the proportion between the speeds. The cutting edge of the teeth may be sharpened as shown on the straight tooth in Figs. 5 and 6, at g.

It will be understood that I have shown and described the preferred form of em bodying my invention, but I contemplate all such modifications and rearrangements of the form shown and described herein as may be made without exercise of invention.

' What I claim is:

1. A wheel-like element for cultivating the soil comprising at least one series of teeth, the first tooth in each series being straight and the other teeth in the series being bent toward the side, some to one side and the rest to the other side, in such a manner that every bent tooth will reach to a point more distant from the vertical plane of the wheel than the foregoing teeth of the same series.

2. A wheel-like member for cultivating the soil comprising at least one series of teeth, the first tooth of each series being straight and the others bent more or less to the side, some to one side and the rest to the other, in such a manner that the distance from the aXis of rotation of the wheel to the outermost portion of the teeth decreases from the first tooth to the last one in each series.

A wheel-like element for cultivating the soil comprising in combination a hub, a pluraiity of peripheral segments, r silicnt connections between said segments and said hubs, and connections between said segments permitting relative motion thereof.

4. A wheel-like element for cultivating the soil comprising in combination a. hub, a plurality of peripheral segments, resilient connections between said segments and said hubs, and resilient connections between said segments.

' 5. A wheel-like element for cultivating the soil comprising at least one series of tccth, the first tooth in each series being straight and the other teeth being bent some to one side and the rest to the other side, the ends of the bent teeth being turned inwardly so as to project in the direction of the axis of rotation of the wheel.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VICTOR LINDERBLAD.

Witnesses L. HOWELL, GncTA PRIEN.

Washington, ID. 0