176 80. Historial Development. A course dealing with the development of intricate time pieces, and their technical requirements. Five quarter hours. Autumn, Winter, Spring. McCormac 81. Theory of Heat Treating and Hardening. A study in special heat treating and working hardening of miniature springs and fine parts. Five quarter hours. Autumn, Winter, Spring. McCormac 82. Gear and Cam Design. A course including gear design, practical problems and special use designs. Five quarter hours. Autumn, Winter, Spring. McCormac DEPARTMENT OF WELDING COURSES OF INSTRUCTION Shop Practice 51. Elementary Acetylene Welding. A course for those with little or no training in acetylene welding. The student is taught how to set up an apparatus, secure balanced flame, reducing flame, oxydizing flame; how to control molten puddle and uniform puddle across work with uniform overlap of ripples; how to make uniform bead with torch and filler rod; also how to join pieces of metal up to one-fourth inch, by butt weld, fillet weld, a'nd lap welding processes. Five quarter hours. 52. Elementary Acetylene Welding (Continued). Training on pipe welding of different sizes; T-welds, butt and fillet welds; also steel welding of heavier gauge, brazing of different thicknesses, joining dissimilar metals together, and silver soldering. Some cast iron welding is given. Five quarter hours. Winter. Staff 53. Elementary Acetylene Welding (Continued). A continuation of the skills learned in Welding 51 besides light aluminum welding. Repair jobs of a small nature are encouraged to develop welding skills in a new light such as putting parts back into useful operation. Some metal welding and hard surfacing are given. Five quarter hours. Staff 177 54. Elementary Arc Welding. Arc welding of different gauge sheet steel. Striking the arc, controlling the head, selecting amperage and proper rod for the job, joining two pieces together by butt weld. Fillet weld and lap weld are skills mastered in course. Five quarter hours. Autumn. Staff 55. Elementary Arc Welding (Continued). Arc welding of vertical, horizontal and overhead welding, along with welding heavy gauge steel. Some cast iron and pipe welding. Five quarter hours. Winter. Staff 56. Elementary Arc Welding (Continued). Continuation of skills learned in Welding 54. Welding of heavy structural steel, welding of heavy castings, stainless steels and steel alloys. Five quarter hours. Spring. Staff 57. Specialization Course in Welding. Advanced work is given in the various phases of welding. Five quarter hours. Autumn, Winter, Spring, Summer. Staff TECHNICAL EDUCATION Trade Belated 61. Elementary Acetylene Welding. The scope and application of oxy-acetylene flame. Historical development and processes of manufacturing oxygen and acetylene. The oxy-acetylene flame. Equipment for the welding process. Set up and operation of equipment, along with general precaution in welding and cutting work are discussed and studied. Welding rods and their applications. Five quarter hours. Autumn. Staff 62. Elementary Acetylene Welding (Continued). A study of metal properties important to welding, tests for identifying metal and preparation for welding, expansion and contraction of metals, oxy-acetylene welding of ferrous alloys such as fusion welding, sheet steel, mild steel plate, welding steel pipe, welding alloy steels, and welding cast iron. Five quarter hours. Winter. Staff 63. Elementary Acetylene Welding (Continued). A study of the principles of bronze welding; also welding chromium, nickel, steels; commercial aspects of welding iron and steel. Oxy-acetylene welding of non-ferrous alloys, aluminum, copper, nickel alloys, magnesium, lead, hard surfacing and other applications are studied. Five quarter hours. Spring. Staff