Oscar E. Perrigo
After about three decennia working in industry as Consulting Mechanical Engineer, Perrigo started writing on technical and management subjects early 20th century.
[6] In the 1906 Modern machine shop: construction, equipment and management Perrigo aimed to "produce a work suitable for the practical and every-day use of the Architects who design, the Manufacturers who build, the Engineers who plan and equip, the Superintendents who organize and direct; and for the information of every Stockholder, Director, Officer, Accountant, Clerk, Superintendent, Foreman, and Workman of the Modem Machine Shop and Manufacturing Plant of Industrial America.
"[7] The many reprints confirm as Allen (2010) acknowledged, that this book was of sterling value; it was used for class instruction and as handbook for workman.
[11] In line with this work, in 1911 Charles Day presented a new method, in which the routing diagram was proposed as basis for designing the laying out of industrial plants.
A careful study of these important relations is recommended to the earnest student of machine shop and factory organization, management, and economics.
"[10] In the Modern American Lathe Practice, 1907 Perrigo aimed to present:[13] Perrigo explained about the earliest form of a lathe proper, that it was, "a machine for shaping wood into forms having a curved, and generally a circular transverse section, by the action of a chisel or other cutting tool upon the piece, which is rotated for the purpose," as shown in the figure (A).
One of the many anecdotes mentioned, was about the problem of the fast-moving ribbon of metal, that with high-speed steel got thrown of the lathe.
Perrigo recalled: "At a speed of, say, two hundred feet per minute, the chip comes writhing and twisting, almost red hot, in a continuous length, shooting here and there, everywhere but the chip box; and quick must be the workman that manages to keep well out of the way of it, for it 'sticketh like a brother' when once he gets tangled in it..."[16] Articles and papers, a selection:
