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Caption: Course Catalog - 1888-1889
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TECHNICAL STUDIES. 51 Previous to the shop work, drawings of the pieces are made by the student, and the exact thing to be done is indicated; thus mistakes are avoided and practice facilitated. The designing of such machine elements as pulleys, journal boxes, cranks, stuffing boxes, etc., cultivates a knowledge of proportion, and of its proper representation on paper. This course of elementary practice fits the student for the advanced shop practice in designing and construction of complete machines undertaken later in the course. TECHNICAL STUDIES. Principles of Mechanism.—Relative motion of points in a system of connected pieces ; motion independent of force ; velocity ratio ; investigation of motion of elementary parts of machines, as friction and non-circular wheels in rolling contact, cams and curves in sliding contact; teeth of wheels; spur, bevel, and screw gearing: linkwork ; quickreturn motions; escapements ; trains of mechanism; epicyclic trains ; straight liae motions. Heat Engines.—The theory of air, gas, and steam engines; discussion of the various types; efficiency; proportions of steam boilers. Hydraulic Engines and Wind Wheels.—Water pressure engines ; turbines and other water wheels ; principles of design and efficiency. Theory of wind wheels ; types and methods of governing ; applications and comparative econmy. ' Machine Drawing.—Detailed designs of machines in whole or in part, such as links and valve motions, governors, steam boilers and engines, hydraulic presses, etc., with due consideration of strength, economy of construction, accessibility for repairs, etc. Mill work and Machinery.—Methods of transmitting power; calculations for shafting, gearing, pulleys, belts, chains, wire and hemp rope; efficiency of various modes of transmission ; best forms for long and short distances. Dynamo-electric Machinery.—The theory of dynamos and motors ; principles of design ; discussion of different types; efficiency; methods of governing ; electric distribution of power ; long distance transmission. The shop practice of the first year has already been de-
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