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COMBINE The combine is a single machine which performs all grain harvesting operations. It cuts, threshes, winnows and cleans grain or sed of any kind. The idea of such a machine is rather old. But practical production of combines began at the end of the last century. With a pick up attachment, a combine can be used to handle the grain. The cleaned grain is gathered in the bin of the combine and then taken away by lorries. The straw is returned to the field and made into bunches. In front of the combine there is a table, which cuts down the stalks brought up to it by the reel, which again feeds them onto the central part of the table while the transporter catches them up and sends them off to the threshing unit. In the thresher the grain is threshed out of the stalks and next through the desk (mounted under the threshing cylinder) falls upon the bolter and thence passes to the screen. The straw, in its turn, is fed on the straw-walker. Here it is shaken to remove the left-over grain while the straw itself is gathered on a straw-tacker. As to the grain it is now freed from impurities by a current of air coming from the fan. Then it falls through the riddle and through the grain anger runs to the flight elevator, which finally conveys it to the bunker or bin. After the grain is discharged from the bin it passes over to the pocket separator which classes the grain for different purposes: as seed stock, milting material, grist, etc. Thence it goes to the bin and finally to the elevator. Quick combines. Harvesting grain faster is the job of two new combines from International Harvester of Chicago. Their international 615 and and 715 models have easily attachable grain headers that make the combines rupidly accessible to a variety of crops. They also offer increased efficiency through the use of universal feeders- the devices that lop off the grain heads and push them up to the waiting wagons. In addition, the International combines come with many new features to make the job of threshing and reaping casier, including an electronic monitor that warns of slowdowns
