DE270546C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Ju 270546 CLASS 45 c. GROUP

JOHANN KATSCHER in DRESDEN.

subsequent grate.

Patented in the German Empire on December 17, 1912.

There are potato harvesters with a share, one on the side of an extension of the share adjoining grate with bars running transversely to the direction of travel and a throwing wheel known whose full-walled blades lie in levels that are through the Axis of the throwing wheel run. With these machines, what is lifted from the coulter is dug out Well through the blades of the throwing wheel over

ίο the extension of the share and the grate pushed, with the earth falling through the grate, while the potatoes at the end of the The grate will fall to the ground from this one. The effect of the rust is described in the Machines affected by the fact that the material is pushed together by the shovels and therefore the earth cannot fall through the grate unhindered. This evil does not apply, however, to the known machines in which the throwing blades are twisted in a helical manner. By Rather, these helically twisted throwing blades will be the good on the Grate, the bars of which run at an angle to the direction of travel, pulled apart, d. H. spread out so that the earth can pass through the grate unhindered. Same effect is to be achieved according to the invention by flat full-walled blades that so are arranged obliquely to the direction of travel that their front edge leads the rear edge. A throwing wheel with flat blades arranged in this way is of course lighter and cheaper to manufacture than a throwing wheel with helically twisted blades. In addition, through a throwing wheel with inclined flat blades in connection with a grate, the bars of which, as is known, run perpendicular to the direction of travel of the machine, the desired effect, d. H. an unhindered passage of the earth through the grate is better achieved than through the throwing wheels with helically twisted blades.

If, for example, in autumn, as a result of severe drought, the ground has become hard, or even on firm, heavy soil, arise when removing the potato dam more clods than fine soil. The fine soil probably falls through the cracks in the grate, the clods remain on the grate with the known facilities.

With the new machine, those clods that get between the grate bars are pressed sideways against the grate bars by the inclined, level blades, dragged along the same, thereby crushed and pushed down. Those But clods that lie on the grate bars or are stacked on top of each other become oblique thrown at the following grate bars and suffer as a result of the repeated impact a vigorous crushing until they finally get between the grate bars and, as previously described, pushed through them.

Claims (1)

Furthermore, as a result of the inclination of the blades in relation to the grate bars, the passage cross-section is increased Changed between two grate bars in favor of the possibility of floor penetration. The space between each two Grate bars is 3 cm. When the shovels sweep across the grate at right angles, so they push the clods of soil, which are a little wider than 3 cm, in front of them, like this that these cannot fail. The blades on the new machine are positioned like this at an acute angle to the grate bars that the passage area between the grate bars of the Blades is cut by an inclined line so that the length of the passage area is more than twice as large as with the right-angled position of the blades. As a result, the clods slightly wider than 3 cm will fall on the new one Arrangement of the blades through the grate gaps, while this is with the known Orders was not the case. The drawing shows a potato harvester with paddles arranged according to the invention, namely in FIG
Fig. Ι in side view, in
Fig. 2 in a section along the line AB of FIG. 1 and in FIG. 3 in a section along the line CD in FIG. 1. FIGS. 4 and 5 show schematically the mode of operation of the individual blades. The coulter a, which excavates the soil strand, is followed by the coulter plate b , over which the blades c of an impeller d sweep. j The impeller d is driven by the shaft e, which is connected to the impellers h by means of a gear ratio f, g . The grate i , consisting of individual bars, connects to the coulter plate b , on which the potatoes are separated from the ground. As can be seen from FIG. 4, the shovel c, which is ^{inclined at an angle of 2} 5 ° to the direction of movement of the machine, first attacks the soil strand k with its front edge I. If the bucket reaches the position according to FIG. 5, the soil strand is distributed over the entire length of the bucket c , whereby it was first broken and the height of the soil strand was lower in the same proportion as it was torn apart by the bucket. In this distribution, the Schaufei c pushes the base with the potatoes over the grate i. As previously described, the clods are pressed against the grate bars from the side, crushed, worn down and pushed through the grate gaps. Ρλτενϊ-Ανspkuch: Throwing wheel with full-walled flat blades for potato harvesters with a Coulter and one laterally connected to an extension of the coulter Grate with grate bars running perpendicular to the direction of travel, characterized in that that the blades are arranged obliquely to the direction of travel that their front Edge leading. 1 sheet of drawings.