1843—Ed. Loysel de Santais, Paris, is granted a patent on an improved coffee-making device, the principle of which is later incorporated in a hydrostatic percolator making 2,000 cups an hour.
1846—James W. Carter, Boston, is granted a United States patent on the Carter "pull-out" coffee roaster.
1847—J.R. Remington, Baltimore, is granted a United States patent on a coffee roaster employing a wheel of buckets to move the green coffee beans singly through a charcoal-heated trough in which they are roasted while passing over the rotating wheel.
1847–48—William Dakin and Elizabeth Dakin are granted patents in England for a roasting cylinder lined with gold, silver, platinum, or alloy, and traversing carriage on a railway to move the roaster in and out of the heating chamber.
1848—Thomas John Knowlys is granted a patent in England on a perforated roasting cylinder coated with enamel.
1848—Luke Herbert is granted the first English patent on a coffee-grinding machine.
1849—Apoleoni Preterre, Havre, is granted a patent in England on a coffee roaster mounted on a weighing apparatus to indicate loss of weight in roasting, and automatically to stop the roasting process.
1849—Thomas R. Wood of Cincinnati is granted a United States patent on Wood's improved spherical coffee roaster for use on kitchen stoves.
1850—John Gordon & Co. begin the manufacture of coffee-plantation machinery in London.
1850[L]—The cultivation of coffee is introduced into Guatemala.