US1013710A - Cultivator. - Google Patents

Description

V. WIDDER.

GULTIVATOR.

APPLICATION FILED we. 23, 1911.

1,013,710. Patehted 1111.2, 1912.

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.VINCENZ WIDDER, OF RIEDLINGEN, GERMANY.

CULTIVATOR.

To all whom it may concern:

Be it known that I, VINoENz WVIDDER, a subject of the German Empire, and resident of Riedlingen, lVurttemberg, Germany, have invented certain new and useful Improvements in or Relating to Cultivators, of which the following is a specification.

This invention has reference to improvements in cultivators and its object is to provide means for mounting the tools, whereby when an obstruction is encountered the tool supports will yield and avoid damaging the parts.

According to my invention I provide a resilient element which cooperates with a resilient tool support tomaintain the latter in normal position, but when an obstacle is encountered the resilient element will yield and thereby permit the tool support to yield and allow the tool to pass over the obstruction.

In the accompanying drawings: Figure 1 is a side elevation illustrating the application of the invention, the dotted lines showing the position of the parts when the tool encounters an obstruction. Fig. 2 is a similar view, but illustrating the position of the parts when the tool is held by the obstruction. Fig. 3 is a side elevation of a slightly different form of the invention. Fig. 4 is a side elevation of the form of the invention shown in Fig. 3, the tool being in contact with the obstruction.

6 indicates a tool mounted on a resilient blade a, the latter being of ogee form in outline and formed with a horizontal rearward extension, to provide means for fastening it to the frame of the machine.

0 in Figs. 1 and 2 indicates an abutment secured to the machine frame and extending under the horizontal rearward extension.

7) designates a resilient blade supporting element, the lower end of which is secured to the rear lower end of the resilient blade back of the tool e. This is curved and its upper end (Z projects forward and normally fits against the abutment c and serves to brace and steady the resilient blade, except when the tool strikes an unusual abutment. The extension of the resilient blade supporting element is such that its end (Z will tend to spring up against the extension of the blade support, and fit snugly behind the abutment c.

When the tool 6 encounters an obstruction the resilient element 6 will yield and Specification of Letters Patent.

Application filed August 23, 1911.

Patented Jan. 2,1912.

Serial No. 645,629.

its end (Z will become disengaged from the abutment 0, and the resilient supporting blade will be permitted to yield as shown in Fig. 2, and thereby avoid breaking of the parts.

It may happen that the resilient blade supporting element Z) will not return to its operative position behind the abutment after it has been released, owing to the play necessary between the end d and the abutment c, which results in undue wear on the parts. In order to avoid this difliculty the means shown in Fig. 4 may be provided. In this construction the upper end of the supporting element 6 is provided with an eye d in which is pivotally mounted a link The link f also engages a bracket 0 mounted under the extension of the resilient blade, and held in position by a bar it. This bracket also forms an abutment. Owing to this arrangement a hinged connection is provided between the resilient supporting blade and supporting element 6. By this construction the supporting element 6 will always be returned automatically to its normal position.

When the plowshare, tine, or the like meets with an abnormal resistance, as for example in encountering a stone, root of a tree or other obstruction, it assumes the position shown in dotted lines in Fig. 3. The upper portion of the supporting element 6 bears against the extension of the resilient blade at, and its outer end tends to curve downwardly. As the resistance increases the curvature of the supporting element also increases and the link turns to the position shown in Fig. 4. As the tension of the resilient element 7) tends to force the upper end rearwardly, the link and the element 6 will be automatically returned to normal position as soon as the obstruction is passed.

I wish it to be understood that certain details of construction device mav be changed without departing from the spirit and scope of my invention.

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

1. The combination with a cultivator frame, of a normallv inclined tool mounted on downwardly inclined resilient carrving means, said carrying means being braced by a resilient stav flexibly maintaining said tool in an inclined position, said resilient stay having disengaging means to permit free movement of the tool when the latter strikes an obstruction, whereby said tool may pass over said obstruction without damage.

2. The combination with a cultivator frame, of a tool mounted on a downwardly inclined spring blade, having a horizontal and rearward extending upper end which is fixed 011 said frame' and a spring blade support secured at its lower end to the lower rear portion of the spring blade, the upper 'end of the spring blade support terminating below the horizontal and rearward extension of the upper end of the main spring blade and against a fixed abutment on the cultivator frame.

3. The combination with a cultivator frame, of a tool mounted on a downwardly inclined spring blade, having a horizontal rearward. extending upper end which is fixed on said. frame, a spring blade support secured atits lower end to the rear blade of the spring blade behind the tool, the upper end of the spring blade support terminating below the horizontal and rearward extension of the spring blade and against a fixed abutment provided on the cultivator frame, and means for guiding the abutment end of the spring blade support when the tool is moved by an obstruction.

4. The combination with a cultivator frame, of a tool mounted on a downwardly inclined spring blade, having a horizontal rearward extending upper end which is fixed 011 said frame, a spring blade support formed with an eye and secured at its lower end to the lower rear portion of the spring blade behind the tool, the upper end of the spring blade support terminating below the horizontal rearward extension of the spring blade and against a fixed abutment on the cultivator frame, a bracket secured under the horizontal rearward extension of the spring blade to provide an abutment, and a 'link connecting said bracket with the eye support secured to the frame and a resilient member fastened to the resilient tool support and having its free upper end normally in engagement with the abutment but adapted to be disengaged to permit the resilient tool support to yield when an obstacle is encountered.

6. The combination of a cultivator frame provided with an abutment, a resilient tool support secured to the frame, a resilient member fastened to the resilient too'l support and having one end normally in engagement with the abutment and means for hinging the abutment end of the resilient member to the frame, whereby when the resilient support encounters an abnormal resistance the resilient member will become disengaged from the abutment and the hinged end will rock.

7. The combination of a cultivator frame, a resilient tool support secured thereto, an

abutment, a resilient member having one end secured and its opposite end normally engaging the abutment, whereby when the resilient tool support encounters an abnormal resistance the end of the resilient member will become disengaged from the abutment.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

VINCENZ WIDDER. Witnesses PAULINE KLAIBER, FRIDA KLAIBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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