Sampo 657 LP-892 LP

Porin Engineering Works began manufacturing combine harvesters shortly before its 100th anniversary in 1956. The model designation 657 LP, equipped with a VW industrial engine, indicated a cutting width of 6 feet and a threshing mechanism width of 57 cm. LP meant combine harvester, S indicated a model equipped with a grain tank, and SS was equipped with both a grain tank and a sack-filling device. The cutting width was 182 cm, and compared to that, the threshing mechanism was quite narrow. The threshing drum was a one-piece throwing drum, and the threshing result was rather weak. Unlike many competitors of the same size class, the threshing drum was fed by a chain elevator. The height of the cutting table was adjusted hydraulically, but the grain-lifting drum was adjusted mechanically. The models from the 1950s were gray, and starting from 1960 they were yellow. Other upgrades in 1960 included a renewed feed elevator and stoker, a larger sieving mechanism, and improved operating levers for the sieving mechanism and threshing drum. The cutting blade operating mechanism was renewed for the year 1962.

In the Ukko-Sampo, also known as 792 LP, the threshing mechanism width was increased to 90 cm and the cutting width to 217 cm. The threshing gap could be adjusted centrally with a lever instead of screws. The grain-lifting drum’s height adjustment was hydraulic, and its speed could be adjusted steplessly. The straw dividers were of the modern type — separate from the cutting table and adjustable. The threshing drums were now conventional four-part pedal drums, and the design included a straw reel. The combine remained very agile, with a turning radius reported as 640 cm.

In the 892 LP introduced in 1964, the cutting width was 244 cm, but otherwise the differences from the 792 were minor. In addition to the length adjustment of the grain-lifting drum, the speed control lever was brought into the cabin.

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