DE417077C - Switching device for the upper and lower outlet of seed drills - Google Patents

Description

GERMAN EMPIRE

ISSUED AUGUST 6, 1925

R E IC H S PATE NT OFFICE

PATENT LETTERING

- JVi 417077 CLASS 45 b GROUP 10

(D 46362 Uli43 b)

Company Deutsche Werke A. G. in Berlin-Wilmersdorf *).

Switching device for the upper and lower outlet of seed drills.

Patented in the German Empire on October 19, 1924.

The subject of the invention is a circuit that can be used. She identifies herself

device for the lower and upper outlet in that the direct drive

of seed drills in which two continuously | the sowing shaft causing intermediate wheel in one Intermeshing intermediate wheels can be pivoted alternately with j around the sowing shaft as the axis of rotation

the driving bicycle engaged Lever, the other the reversal of motion the-

*) I ⁷ Oi! the Paienlsitrlier has been given as the strength:

7 heodor Stemmer in Spandau.

Claims (3)

Nende intermediate gear in a pivotable around the journal of the first intermediate gear Lever is arranged. The invention has the advantage over the previously used types that the Conversion can be made very easily and the depth of engagement of the wheels is permanent the right one remains. The subject of the invention is shown in the drawing in an exemplary embodiment. It shows Fig. Ι the switching device in the position for underflow. Fig. 2 illustrates the position for the upper outlet. Behind and below the seed box a lies the seed shaft c carrying the seed wheels b , which at one end carries the gear wheel d used to drive it and a lever e pivotable on it. The first intermediate gear f is mounted on this by means of pin e ¹ , which is permanently connected to the gear wheel d via a transmission gear / * coaxial with it and, at underrun , is brought into engagement with the gear wheel h of the bicycle (not shown) arranged on the machine axis g will. i denotes a further lever which is pivotably mounted on pin e ¹ and, by means of pin j ^1, carries the second intermediate gear / which continuously meshes with the first intermediate gear f. Behind its pivot axis, the lever i runs out into an adjusting lever i ^{1 which} is bent obliquely upwards and to which an adjusting pawl k is attached, which engages in two notches e ″ provided in the lever e for the lower and upper outlet. Between the pins e ¹ , j ¹ at point m , the lever i is supported by a rocker η , which is in a manner known per se with the devices for raising and lowering the j sowing coulters in connection that when i lifting the coulters during the Drive to or from the work place a disengagement, i when lowering the coulters into the ground: the gear is engaged. In the direction of travel of the machine indicated by the horizontal arrow \ in Fig. 1, | the sowing shaft c from the hub Ii over the first! Intermediate gear / and the transmission gear f ^{1 driven} on j lower outlet. Do you want to go to the top! adjust the run, then you bring the Stellhej at i ¹ in the position shown in Fig. 2, whereby 'by buckling the hinged levers c, i the second intermediate gear j comes into engagement with the gear wheel h and the rotary movement on that with the gear wheel h disengaged first intermediate gear / transmits, which thereby rotates in the opposite direction. As can be seen, the axial spacing of the intermediate gears always remains the same in all switching positions, so that the engagement of the teeth with respect to the meshing depth is always a regular one. The essence of the invention is not changed if, in a reversal of the arrangement, the intermediate gears are alternately brought into engagement with the gear wheel d. Sponsorship τ claims: ι. Switching device for the upper and lower outlet of seed drills, in which two permanently meshing intermediate wheels can be alternately brought into engagement with the driving bicycle, characterized in that the intermediate wheel (/) causing the direct drive of the sowing shaft (c ) in one around the sowing shaft lever (e) pivotable as the axis of rotation, the other intermediate gear (/) serving to reverse the movement is arranged in a lever (i) pivotable ^{about the bearing pin (e 1) of the first intermediate gear (/).} 2. Switching device according to claim 1, characterized in that the lever (e) carrying the first intermediate wheel is designed as a detent body for an adjusting pawl (k) of the supporting lever of the second intermediate wheel provided with a switching lever (i ^1). 3. Switching device according to claim 1 and 2, characterized in that the support lever of the second intermediate wheel is supported by a rocker (K) which switches the intermediate gear (f, f) off or on in a known manner when raising and lowering the coulters. 1 sheet of drawings.