Opposed to the various types of roller gins is the " saw gin," invented by Eli Whitney, an American, in 1792.
Saw gins do considerable damage to the fibre, but for short-stapled cotton they are largely used, owing to their great capacity.
Saw gins are not adapted to long-stapled cottons, such as Sea Island and Egyptian, which are generally ginned by machines of the Macarthy type.
The crop is picked, ginned and baled in the usual way, the Macarthy style action roller gins being almost exclusively employed.
Since about 1875 the Russians have fostered the industry, introducing American Upland varieties, distributing seed free, importing gins, providing instruction, and guaranteeing the purchase of the crops.
Moveable gins were tried for a time in some places; they were dragged by traction engines from farm to farm, like threshing machines in parts of England, but the plan proved uneconomical because, among other reasons, farmers were not prepared to meet the cost of providing facilities for storing their cotton.
To lend gins and improved machines for cleaning and preparing cotton."
A Mr Clegg, who afterwards interested himself keenly in the activities of the Cotton Supply Association reported that in the course of a tour in 1855 through the Eastern countries bordering on the Mediterranean he had found none of the gins presented by the British government at work or workable.
The city is situated in an agricultural and cotton-raising region, and has cotton compresses and gins, cotton mills, cotton-seed oil refineries, foundries and machine shops, and furniture and wagon factories.
The city has cotton-compresses and cotton-gins, and among its manufactures are cotton-seed oil, flour, cement blocks, pressed bricks, canned goods, foundry products, waggon-beds and creamery products.
There are large warehouses, compresses and gins, extensive cotton-seed oil works and sawmills.
Augusta was the home of the inventor, William Longstreet (1759-1814), who as early as 1788 received a patent from the state of Georgia for a steamboat, but met with no practical success until 1808; as early as 1801 he had made experiments in the application of steam to cotton gins and saw-mills at Augusta.
It is a trading and shipping centre of an extensive farming territory devoted to the raising of live-stock and to the growing of cotton, Indian corn, fruit, &c. It has large cotton gins and compresses, a large cotton mill, flour mills, canning and ice factories, railway repair shops, planing mills and carriage works.
Shawnee is situated in a fine agricultural region, is a shipping-point for alfalfa, cotton and potatoes, is an important market for mules, and has large railway repair shops, and cotton-gins and cotton compresses; among its manufactures are cotton-seed oil, cotton goods, lumber, bricks and flour.
Situated in the midst of a rich farming and stock-raising country, Goliad has flour mills, cotton gins and cotton-seed oil mills.
There are lumber mills, cotton mills and cotton-gins; and cotton, farm products and artificial stone are exported.
It has various manufactures, including cotton gins, cotton-seed oil, cigars, lumber and brick.
The city has cotton gins and a cotton compress, and various manufactures.
Oklahoma City's prosperity is due chiefly to its jobbing trade, with an extensive farming and stock-raising region, but it has also cotton compresses and cotton gins, and various manufactures.