DE434577C - Method and device for cleaning the chopping knives of chopping machines during work - Google Patents

Description

GERMAN EMPIRE

ISSUED SEPTEMBER 28, 1926

REICH PATENT OFFICE

PATENT LETTERING

- JVi 434577 CLASS 45 a GROUP 51

Ernst Zander in Berlin-Schöneberg.

Method and device for cleaning the chopping knives of chopping machines

during work.

Patented in the German Empire on September 29, 1925.

The chopping knives of good chopping machines sit well

generally on an iron handle bent back like a gooseneck, which is attached to the swinging chopping knife carrier is attached.

The horizontal surface of the cleaver itself with the part of the gooseneck behind it now causes straw, weeds, roots and the like to be caught, which up to now can only be removed by one the chopping machine stops and by hand or

Claims (3)

remove the weeds from the individual knives with a graver. In the case of seed drills, which, similar to the chopping knives, have individually up and down swiageoäe seed coulters, cleaning is much easier. At one point, at the time of drilling, the development of weeds has hardly progressed, and then the drill shoe that extends into the earth is smooth in the front in a vertical direction, can even be bent backwards a little, so that in the case of seed drills, a simple lifting of the seed coulters for cleaning enough. This type of cleaning in seed drills is known, it is also known that the Dtfillschare can be lifted individually in order to reduce the physical strain on the operator. In the case of chopping machines, such a pulling up of the individual chopping knives is not sufficient for the reason given above; Rather, weeds, roots and the like remain on the surface of the chopping knife and in the rear gooseneck. The present method aims at the possibility of cleaning the chopping knives during operation, similar to what is already possible with drill coulters. It happens that the parallelograms or rocker arms of the chopping knives are thrown by a short jerk upwards and forwards, so that at the end of this movement as a result of the acceleration given, the adhering weed quantities fly off the front of the individual chopping knife. Since this jolt has to be short and strong in order to achieve the desired "effect, it is not acceptable to throw up all the chopping knives at the same time, for example by means of the lifting device, because the operator's strength is not sufficient under any circumstances Can throw up and forwards in jerks in order to achieve the necessary speed and the required cleaning shock. It is expedient to arrange the individual throwing device per chopping lever in such a way that the same component can be used to lift all the chopping knives for the free position. One embodiment is 1 to 4. E1S in Fig. 1 α denotes the chopping knife bar to which the chopping knife carriers b (parallelograms or rocker arms) are attached; the latter carry the chopping knives d UQd has a handle at its other end c. By pulling on the individual The handler, who is behind the wheel or sits on a seat that protrudes to the rear, can therefore throw up the individual hoe levers as required. If one now attaches the various roles d on a continuous rotating shaft / and gives the Zugschßüren on the roles d a stop, such. B. in Fig. 3 at g or in Fig. 4 at h, you can also lift all the hoe levers at once by turning the shaft / with the help of the lever /. If you want to avoid the friction between pulley d and cords c when pulling the individual levers, you can also attach a freewheel between shaft / and pulley d, as shown in Fig. 3. When the shaft / is rotated, the lever k firmly connected to / takes the arm / attached to the roller d with it, while when the shaft / is stationary and when the cord c is pulled, the roller d can rotate freely on the shaft /. A simple structural solution is also the attachment of simple levers on the shaft /, firmly connected to this, instead of the rollers d. The pull cord is then passed through a hole at the outer end of this lever and a handle is given to it at the end pulled through the hole above the lever. You can now throw up each chopping knife carrier individually on the handle through the hole in the lever, while turning the shaft and thus the individual lever lifts all the chopping knife carriers together. Patent A ν Proverbs: 1. Procedure for cleaning the chopping knives of chopping machines during the Work, characterized in that the chopping lever to be cleaned is flung abruptly upwards and forwards. 2. Device for carrying out the method according to spoke 1, characterized by the attachment of pull cords to the individual chopping knife carriers, by means of which the jerky throwing up can be made from a comfortable operating position. 3. Apparatus according to claim 2, characterized in that the pull cords are freely connected to the common lifting device of all chopping knife carriers. 1 sheet of drawings.