PREPARING GREEN COFFEE FOR MARKET Page 1

Early Arabian methods of preparation—How primitive devices were replaced by modern methods—A chronological story of the development of scientific plantation machinery, and the part played by British and American inventors—The marvelous coffee package, one of the most ingenious in all nature—How coffee is harvested—Picking—Preparation by the dry and the wet methods—Pulping—Fermentation and washing—Drying—Hulling; or peeling, and polishing—Sizing, or grading—Preparation methods of different countries

 La Roque in his description of the ancient coffee culture, and the preparation methods as followed in Yemen, says that the berries were permitted to dry on the trees. When the outer covering began to shrivel, the trees were shaken, causing the fully matured fruits to drop upon cloths spread to receive them. They were next exposed to the sun on drying-mats, after which they were husked by means of wooden or stone rollers. The beans were given a further drying in the sun, and then were submitted to a winnowing process, for which large fans were used.


Development of Plantation Machinery

The primitive methods of the original Arab planters were generally followed by the Dutch pioneers, and later by the French, with slight modifications. As the cultivation spread, necessity for more effective methods of handling the ripened fruit mothered inventions that soon began to transform the whole aspect of the business. Probably the first notable advance was in curing, when the West Indian process, or wet method, of cleaning the berries was evolved.

About the time that Brazil began the active cultivation of coffee, William Panter was granted the first English patent on a "mill for husking coffee." This was in 1775. James Henckel followed with an English patent, granted in 1806, on a coffee drier, "an invention communicated to him by a certain foreigner." The first American to enter the lists was Nathan Reed of Belfast, Me., who in 1822 was granted a United States patent on a coffee huller. Roswell Abbey obtained a United States patent on a huller in 1825; and Zenos Bronson, of Jasper County, Ga., obtained one on another huller in 1829. In the next few years many others followed.

John Chester Lyman, in 1834, was granted an English patent on a coffee huller employing circular wooden disks, fitted with wire teeth. Isaac Adams and Thomas Ditson of Boston brought out improved hullers in 1835; and James Meacock of Kingston, Jamaica, patented in England, in 1845, a self-contained machine for pulping, dressing, and sorting coffee.

William McKinnon began, in 1840, the manufacture of coffee plantation machinery at the Spring Garden Iron Works, founded by him in 1798 in Aberdeen, Scotland. He died in 1873; but the business continues as Wm. McKinnon & Co., Ltd.

About 1850 John Walker, one of the pioneer English inventors of coffee-plantation machinery, brought out in Ceylon his cylinder pulper for Arabian coffee. The pulping surface was made of copper, and was pierced with a half-moon punch that raised the cut edges into half circles.

The next twenty years witnessed some of the most notable advances in the development of machinery for plantation treatment, and served to introduce the inventions of several men whose names will ever be associated with the industry.

John Gordon & Co. began the manufacture in London of the line of plantation machinery still known around the world as "Gordon make" in 1850; and John Gordon was granted an English patent on his improved coffee pulper in 1859.

Robert Bowman Tennent obtained English (1852) and United States (1853) patents on a two-cylinder pulper.

George L. Squier began the manufacture of plantation machinery in Buffalo, N.Y., in 1857. He was active in the business until 1893, and died in 1910. The Geo. L. Squier Manufacturing Co. still continues as one of the leading American manufacturers of coffee-plantation machinery.

Marcus Mason, an American mechanical engineer in San José, Costa Rica, invented (1860) a coffee pulper and cleaner which became the foundation stone of the extensive plantation-machinery business of Marcus Mason & Co., established in 1873 at Worcester, Mass.

Walker's Original Disk Pulper, 1860
Walker's Original Disk Pulper, 1860

Much favored in Ceylon and India

John Walker was granted (1860) an English patent on a disk pulper in which the copper pulping surface was punched, or knobbed, by a blind punch that raised rows of oval knobs but did not pierce the sheet, and so left no sharp edges. During Ceylon's fifty years of coffee production, the Walker machines played an important part in the industry. They are still manufactured by Walker, Sons & Co., Ltd., of Colombo, and are sold to other producing countries.

Alexius Van Gulpen began the manufacture of a green-coffee-grading machine at Emmerich, Germany, in 1860.

Following Newell's United States patents of 1857–59, sixteen other patents were issued on various types of coffee-cleaning machines, some designed for plantation use, and some for treating the beans on arrival in the consuming countries.

Early English Coffee Peeler
Early English Coffee Peeler

Largely used in India and Ceylon

James Henry Thompson, of Hoboken, and John Lidgerwood were granted, in 1864, an English patent on a coffee-hulling machine. William Van Vleek Lidgerwood, American chargé d'affaires at Rio de Janeiro, was granted an English patent on a coffee hulling and cleaning machine in 1866. The name Lidgerwood has long been familiar to coffee planters. The Lidgerwood Manufacturing Co., Ltd., has its headquarters in London, with factory in Glasgow. Branch offices are maintained at Rio de Janeiro, Campinas, and in other cities in coffee-growing countries.

Probably the name most familiar to coffee men in connection with plantation methods is Guardiola. It first appears in the chronological record in 1872, when J. Guardiola, of Chocola, Guatemala, was granted several United States patents on machines for pulping and drying coffee. Since then, "Guardiola" has come to mean a definite type of rotary drying machine that—after the original patent expired—was manufactured by practically all the leading makers of plantation machinery. José Guardiola obtained additional United States patents on coffee hullers in 1886.

Group of English Cylinder Coffee-Pulping Machines
 

Group of English Cylinder Coffee-Pulping Machines

William Van Vleek Lidgerwood, Morristown, N.J., was granted an English patent on an improved coffee pulper in 1875.

Several important cleaning and grading machinery patents were granted by the United States (1876–1878) to Henry B. Stevens, who assigned them to the Geo. L. Squier Manufacturing Co., Buffalo, N.Y. One of them was on a separator, in which the coffee beans were discharged from the hopper in a thin stream upon an endless carrier, or apron, arranged at such an inclination that the round beans would roll by force of gravity down the apron, while the flat beans would be carried to the top.

C.F. Hargreaves, of Rio de Janeiro, was granted an English patent on machinery for hulling, polishing, and separating coffee, in 1879.

The first German patent on a coffee drying apparatus was granted to Henry Scolfield, of Guatemala, in 1880.

In 1885 Evaristo Conrado Engelberg of Piracicaba, São Paulo, Brazil, invented an improved coffee huller which, three years later, was patented in the United States. The Engelberg Huller Co. of Syracuse, N.Y., was organized the same year (1888) to make and to sell Engelberg machines.

Walker Sons & Co., Ltd., began, in 1886, experimenting in Ceylon with a Liberian disk pulper that was not fully perfected until twelve years later.

Another name, that has since become almost as well known as Guardiola, appears in the record in 1891. It is that of O'Krassa. In that year R.F.E. O'Krassa of Antigua, Guatemala, was granted an English patent on a coffee pulper. Additional patents on washing, hulling, drying, and separating machines were issued to Mr. O'Krassa in England and in the United States in 1900, 1908, 1911, 1912, and 1913.

The Fried. Krupp A.G. Grusonwerk, Magdeburg-Buckau, Germany, began the manufacture of coffee plantation machines about 1892. Among others it builds coffee pulpers and hulling and polishing machines of the Anderson (Mexican) and Krull (Brazilian) types.

Additional United States patents were granted in 1895 to Marcus Mason, assignor to Marcus Mason & Co., New York, on machines for pulping and polishing coffee. Douglas Gordon assigned patents on a coffee pulper and a coffee drier to Marcus Mason & Co. in 1904–05.

The names of Jules Smout, a Swiss, and Don Roberto O'Krassa, of Guatemala, are well known to coffee planters the world over because of their combined peeling and polishing machines.

The Huntley Manufacturing Co., Silver Creek, N.Y., began in 1896 the manufacture of the Monitor line of coffee-grading-and-cleaning machines.