1977 - Volume #1, Issue #1, Page #17[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
New Rotary CombineThere's a good chance that a revolutionary rotary combine from Canada will be operating in corn, soybean or small grain fields in your neighborhood this year.
"We expect to have about 65 models working throughout the United States," Marsun Lipsit, general manager of Wester Roto Thresh, told FARM SHOW. "We also plan to show the new Roto Thresh at several fairs and shows."
In designing the new combine, under development since 1965, engineers completely eliminated conventional straw walkers for grain-chaff-straw separation. It uses a completely new "rotary" concept to separate grain from straw or stalks by spinning it in a huge perforated steel drum measuring 66 in. in dia., 108 in. long and having about 21,000 sq. in. of separating area. Centrifugal force lets grain pass through the perforations and to the grain cleaner, with straw and chaff dropping free of the drum and out the back end.
"It'll handle large volumes of straw, cornstalks or soybean residues without wasting grain," explains Lipsit. "Others have tried to copy the basic design, but to date, no one has succeeded. You hear terms such as twin rotary cylinders and rotary power but this is the first and only rotary separation concept.
"Because grain is being forced out of the straw by centrifugal force around the circumference of the drum, the separation works equally well on sidehills with no buildup of straw on one side, as with conventional combines," Lipsit points out. "Straw walkers are less efficient because they rely on the bouncing action of the straw towards the rear of the machine."
Price tag on the new combine, completely equipped, is right at $46,000. It's available with direct cut headers (up to 24 ft.), row-crop headers (up to six rows) and a pickup header.
The new-style combine uses a conventional 8-rub bar cylinder (48.4 in. wide and about 22 in. in dia.) and a 10 bar concave.
Another exclusive on the Roto Thresh is its Aspirator System. "It works on a vacuum principle, removing the largest percentage of chaff from threshed grain before it reaches the cleaning section," explains Lipsit. "A larger amount of grain can be handled on the cleaning shoe with less loss because you are separating basically clean grains and unthreshed heads or pods. Just set the wind on the shoe and sieve opening like any conventional combine that you are used to and the same low loss occurs in any crop." The Aspirator system was developed and patented by the Department of Agricultural Engineering, University of Saskatchewan. Canada's leading combine research facility.
For more details, contact: FARM SHOW Followup, Wester Roto Thresh, Marsun Lipsit, General Manager, 818 43rd St. East, Saskatoon, Sask., Canada
Click here to download page story appeared in.
Click here to read entire issue
To read the rest of this story, download this issue below or click here to register with your account number.