Roto Thresh Combine Harvester

Fred and Bill Streich with Roto Thresh

A fresh way to thresh — Manitoba farmers put a “revolutionary spin” on combine design

The Roto Thresh was the first combine harvester to use a spinning drum to separate grain from chaff and straw. Rotary separation is now common in combine harvesters, but in the 1950s when Manitoba farmers William Streich, Frederick Streich, and Frank McBain built their first prototype, it was an innovative departure. The “sieveless chaffer,” as it was first called, underwent further development through the University of Saskatchewan and in 1968 the Western Roto Thresh Manufacturing Company was launched.

The first Roto Thresh combine harvester rolled off the production line in Saskatoon in 1974, offering higher harvesting capacity and reduced grain loss. Only fifty machines were built, however, before production ceased in 1978.

Author(s)
Profile picture for user Ingenium
Ingenium – Canada's Museums of Science and Innovation

Ingenium represents a collaborative space where the past meets the future in a celebration of creativity, discovery, and human ingenuity.

Telling the stories of people who think differently and test the limits, Ingenium honours people and communities who have shaped history — and inspire the next generation.

https://ingeniumcanada.org/about-ingenium