Patent for a new and improved coffee roaster. This design calls for "a revolving cylinder; and the invention consists of a cylinder provided with a hollow trunnion, and of a semi-tubular tester introduced through said trunnion into the cylinder, which tester serves as a handle for revolving the cylinder, and can be withdrawn from time to time with samples of coffee to enable the operator to judge of the progress of the roasting process" (lines 11-19).