Stevens Institute of Technology - Link Yearbook (Hoboken, NJ)

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the ellipse, hyperbola, parabola, cycloid and trochoid, involute and other roulette spirals, limagon, lemniscate, curve of sines, curve of tangents, cissoid and associated curves, quadrative, subquadrative and analogous curves. Closely allied to these instruments are two mechanical movements for the tracing of ellipses on moving planes, which he has embodied in the designs for two unique machines, one for cut- ting out elliptical mats, in which the only motions are thos e of uniform rotation; the other, an elliptical lathe, in which the work is always in running balance, and which cuts rods of any length to an elliptical section and interior surfaces to an elliptical section while the work is chucked and rotated as in an ordinary lathe. Ae ee

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every detail of many turreted iron-clad vessels were made in the Captain’s office. The first of these was the famous MONITOR. In relation to her, my friend MacCord is justly proud to say that —- He is the man, Who owns the hand, That held the pen, That drew the lines, Upon the sheets, That guided the men, Who built the boat, That John planned. Inasmuch as Ericsson was a most accomplished draughtsman and extremely critical in regard to all work done for him it is not surprising, under such severe censorship, that his assistant acquired skill as a draughtsman and a knowledge of machine-designs. In 1868 Mr. MacCord came to Hoboken as chief draughtsman in the construction of the Stevens Battery, upon which work was in progress, under the superintendence of Gen. George B. McClellan. In this work he was occupied for two years. He then acted in the same capacity in the Department of Docks in New York, of which Gen. McClellan was Chief Engineer. On the opening of the Stevens Institute of Technology, in 1871, he was offered, and he accepted, the Chair of Mechanical Drawing, which he has since then occupied. For this position in a school of mechanical engineering he was well fitted. Having the advantage of an extensive practical experience, he evolved from this experience a course of instruction which he has endeavored to make beneficial to the student of mechanical engineering. Professor MacCord has not, however, been content with the planning and bringing into practical working a course of instruction. Throughout the years of his duties as professor he has worked to add to the knowledge pertaining to the subject of his professorship. In other words, he is a professor in the sense in which that title should be understood. He is the author of the following works and papers: ‘‘A Treatise on the Slide Valve and Eccentric; ‘‘Lessons in Mechanical Drawing;” “ Kinematics and Practical Mechanism;” ‘Practical Hints for Draughtsmen,” and ‘‘ Progressive Exercises in Mechanical Drawing.” He has published over sixty papers on mechanical subjects, most of them containing the results of original investigations. Of these, we mention the following: ‘‘Simultaneous Dead Points;” ‘‘ Mechanical Equiva- lents;” ‘‘Composite Gearing, Combining the Involute and Epicycloidal Systems;”’ ‘« Geometric Determination of the Radius of Curvature of Many of the Higher Plane Curves;” also a series of papers describing ‘‘ Instruments for Drawing Curves;” these contain original devices for drawing 8

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Phe Stevens Institute of Pechnology. A Scuoot oF MECHANICAL ENGINEERING. BOARD OF TRUSTEES. REV. S. B. DOD, President. ANDREW CARNEGIE, Vice-President. HENRY MORTON, Ph.D., Secretary. E. A. STEVENS, 7Z7veasurer. MRS. EDWIN A. STEVENS, E. A. STEVENS, ANDREW CARNEGIE, ALEX. C. HUMPHREYS, M.E. HONTALE Sa eM cGLEL: HENRY MORTON, Pu.D., REV. S. B. DOD, WM. KENT, M.E., CHARLES MacDONALD, C.E., WM. HEWITT, M.E., ALFRED 'R. WOLFF, M.E. 10