Q.Turnout isn't a problem for my gin. Why would I need this?
A.While we are certainly not suggesting that turnout is a problem in your gin, we are excited at what we are seeing with Power Roll Gin Stand's ability to create an opportunity that has never been available at this point. Taking advantage of this new technology will give you turnout and quality results that have not been achievable to this point. Cotton producers will soon demand that their gin adopt this technology and with this technology, you can be assured that you won't be sending growers' money out on the seed truck.

Q.How is so much good lint fiber left on seeds by all of the best operating modern gin stands?
A.The basic operating principle of saw gin stands is the same as originally developed before 1900. The spike tooth gin stand invented by Eli Whitney in 1794 and the saw cylinder version created by H. Odgen Holmes in 1796 used toothed wheels in conjunction with an array of ribs to separate lint from the seeds. Other functions were later added to saw gin stands to increase ginning speed and capacity and handle cotton from rougher harvest methods but there hasn¹t been any significant improvement in the basic design for decades.

Several areas of saw gin operation are probable causes for loss of lint because of discharging seeds that are less than fully ginned. A key factor seems to be that there are no active elements in conventional saw gin stands which function to select out and remove seeds that are fully ginned while retaining seed that contain residual lint. Seedcotton fed down in a continuous sheet through the huller front onto the saw below the seed roll impedes removal of ginned seeds in the conventional saw gin stand. The incoming seedcotton produces a countercurrent loop obstructing the path where ginned seeds are supposed to be dropped out of the seed roll. This becomes a bigger problem as ginning speed is increased. Research using calculations based on weight determined by hand filling of gin saw teeth showed that gin saws are theoretically capable of far higher ginning rates than they presently operate at. The main limitation seems to be failure to load many of the saw teeth with lint, and poor capability to sort out and remove fully ginned seeds. The function of all elements of a saw gin needs to be aimed at getting the lint quickly attached to the saw teeth and pulled off the seed at the base and the ginned seeds discharged.

Continued rotation of seed containing unginned lint within the seed roll may produce tangling, fiber damage and friction which generates neps that are a characteristic of saw ginned lint. Lint should be caught by the saw in large clumps that can be quickly removed from the seed. This will help reduce fiber breakage because of more fibers in the tuft to endure the ginning forces in the seed roll and at the gin point against the ribs.