T-bb trkay reaper-binder machine is a cutting and binding machine for crops that is carried by a tractor and operated by an acting movement coming from the rear mile of the tractor. Those are very useful and practical machines that only do the works of cutting and binding, and that need very little maintenance and repairing. It adjust the cutting height automatically with a spring jack that changes the height according to descents, ascents and holes on the ground. Even person who is working alone can do the mounting of the machine to the tractor. If we consider the facility and the speed of tractor's driving we can notice that the waste of time during the work is minimum. So that the desired high effeciencity will be obtained. There is a safety system which slows down the striking speed that can cause a break and destruction to the corp reaper because of things like roots, stones, etc. , so that the driver won't have troubles that are caused by these. t-bb reaper - binder can be used for all types of grounds (lowlands, small hills, soft grounds, etc. ) and for all types of plants that grows on these grounds (wheat, wheat grained barley,oats, rye). Carrying the machine on the road is easy and going back to field order can be managed by a turn of 90 degree to the left horizontally.