ELEMENTS OF MACHINE DESIGN originally published in 1917. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork. The purpose of this book, has been to present in fairly complete form a discussion of the fundamental principles involved in the design and operation of machinery. An attempt is also made to suggest or outline methods of reasoning that may prove helpful in the design of various machine parts. The book is primarily intended to be helpful in the courses of machine design ss taught in the American technical schools and colleges, and it is aIso hoped that it may prove of service to the designers in engineering offices.