Köla

The largest combine harvester manufacturer in Europe, Ködel & Böhm, had produced nearly half a million combine harvesters when it introduced its first combine harvester, the Köla SM 3, to the market in 1951. This was a self-propelled combine equipped with a 230 cm cutting table and a 52 hp diesel engine. Later, the SM 4 with a 10 cm wider cutting table was introduced alongside the GM 4, a pull-type combine harvester with its own engine.

The threshing drum of the SM 3 and 4 was a full 150 cm wide. The width of the single-section beater was the same. Bagging equipment was standard, and a grain tank was available at an extra cost. The height adjustment of the cutting table was hydraulic, and the height of the straw walker was adjusted with a lever from the driver's seat. The speed of the threshing drum could be adjusted steplessly. Standard grain sieves were 8, 10, 12, and 14 millimeters.

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Combines

Köla SM 3 – SM 4

In 1968 the Rubin appeared on the market, taking its place in the Köla range between the Coronet and the Hydromat. It used the same Perkins engine as the Coronet, rated at 72 hp. In the parallel model, the Rubin X100, there was a 90 hp engine. Surprisingly, the engine was mounted in the old Köla fashion on the driver’s side. The cutting width was 300 cm, and the lower-powered version was also available with a 260 cm header. The threshing‐drum width (106 cm) and the dimensions of the sieve and straw walkers were considerably larger than on the Coronet, even though the overall size and price difference between the machines was small.

Shortly after the Rubin’s introduction, KHD acquired the Köla factory, and the Köla Rubin was initially renamed the Fahr Rubin. In 1972 the model designation changed to M 900, the engine was swapped out for a Deutz, and it was relocated to the rear of the grain tank.

The brochure image apparently shows some kind of prototype, since its unloading pipe isn’t recessed as on the production models. The slope of the top of the tank in the photo also doesn’t match the rounded shape familiar from the Fahr machines.

The last combine presented under the Köla name was the Corall, similar to the Rubin but with three straw walkers. It was powered by a 69 hp Perkins engine and had an 80 cm-wide threshing mechanism. Its cutting width was 250 cm. The Corall was also sold under the Fahr brand in 1971, but its production was then discontinued, and that size class was continued with Fahr-based models.

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Köla Rubin, Corall

Milestones in the history of combine harvesters include the world’s first harvester equipped with a hydrostatic drive transmission, the Köla Hydromat, whose production began in 1966. Each driving wheel was powered by a hydraulic motor. There were two speed ranges: 0…10 and 0…20 km/h. The Hydromat’s engine was a 6-cylinder Perkins, whose 106 hp power was rather low compared to the rest of the harvester’s design. The threshing mechanism width was 127.5 cm. The length of the threshing drum was as much as 380 cm. Header widths were available in sizes ranging from 300 to 600 cm. The cutting height adjustment was automatic. The saddle-shaped grain tank had a volume of 2,800 liters. The Hydromat was available in the traditional red or white.

In 1969, Ködel & Böhm came under the ownership of Deutz. Slightly earlier, they had already acquired Fahr, which specialized in smaller combine harvesters. Thus, the Köla Hydromat became Fahr’s flagship model M1250. The most important change was the 140-horsepower Deutz engine. Production continued at Köla’s factory in Lauingen, where eventually the rest of Deutz-Fahr’s production was also concentrated.

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Köla Hydromat

The Köla Favorit was completely replaced by the new Coronet in 1967. The design was modern and angular. The grain tank was now in its usual place and was saddle-shaped. The Perkins engine was located at the back of the tank. The driver sat in the centerline of the harvester. The cutting width was 255 cm. The cutting height adjustment was automatic; a sensor located under the header monitored the irregularities of the ground surface. The sizing of the threshing mechanism was the same as its predecessor: the width of the threshing drum was 90 cm and the diameter 56 cm. There were three threshing bars, each 300 cm long.

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Köla Coronet

In 1955, Ködel & Böhmin's smaller threshing combine, the Köla Combi, was introduced to the market. It was equipped with a 34-horsepower Mercedes diesel engine. The engine was located next to the driver on the right-hand side. The cutting width was 190 cm. The height adjustment of the unloading reel was mechanically standard. The threshing drum width was 70 cm, and it had three rasp bars. In the tank version, the tank was positioned below the sack-loading platform, and the discharge pipe was at the rear of the combine, where the grain was conveyed by a horizontal auger located under the belly of the combine. In 1959, the Combi Special was introduced, featuring a 205 cm cutting table. The Combi Extra, on the other hand, was equipped with a 190 cm cutting table but had a wider front axle and larger wheels than the original Combi. Over the years, the Combis underwent quite a few upgrades, including an increase in engine power to 38 horsepower.

Also introduced in 1959 was the larger Favorit, which had a cutting width of 255 or 300 cm. Its construction was similar to the Combi, meaning it was very low-profile. However, its height was increased by 63 cm due to a high-rise grain elevator. A novelty was the Vario-System, which allowed the tank to be easily folded away when desired, directing the grain into sacks. The Favorit's threshing drum was not only wider but also had a larger diameter (56 cm). The Fordson engine initially offered 55 hp, later increased to 68 hp. Additionally, 56-horsepower Deutz or Hanomag diesels were available.

Köla machines were imported to Finland during the years 1960-66 and 1967-69.

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Köla Combi, Favorit

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