PDF (1901-1902) - CaltechCampusPubs
PDF (1901-1902) - CaltechCampusPubs
PDF (1901-1902) - CaltechCampusPubs
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30 'l'HROOP POLYTECHNIC INSTITUTE<br />
Processes. The processes involved in the year's work arc:<br />
drawing, bending, upsetting, different kinds of welding, punching,<br />
drilling, fullering, swaging, cutting cold, chipping, cutting hot,<br />
splitting, twisting, filing, brazing, hardening, tempering, and ornamental<br />
iron work.<br />
Tempering. Hardening in water and oil, tempering or drawing,<br />
temperatures and colors used, and processes in tempering tools for<br />
wood and iron work.<br />
Ji :<br />
TYPICAL EXEIlC[SES IN FORGING<br />
Ornamental iron work. Simple pieces of ornamental iron work<br />
are brought into the . course during the year, preparatory to the more<br />
elaborate piece made at the close of the year.<br />
!Pattern"LJr.\aking ant> LJr.\acbine"Sbop !practice<br />
1. (a) Pattern -making. This course comprises a series· of<br />
exercises embodying the principles governing pattern construction,<br />
with lectures and illustration of molding- and other foundry practice<br />
having direct bearing upon pattern work.<br />
The allowances for draft, shrinkage and casting finish are kept<br />
prominently before the student throughout the course, and with each<br />
succeeding model additional principles are brought out, comprising<br />
split patterns, simple and complex core-work, rib-work, segmentwork,<br />
fil leting, etc. Patterns ,may be actually tested in the molding<br />
sand, as the pattern-shop has, as an adjunct, properly furnished<br />
molding benches and brass furnace. Some work in molding is<br />
required of every student.<br />
Preparation required, wood work and plane geometry.<br />
(b) Machine-shop practice. In bench and vise work the student<br />
takes up chipping, filing, scraping, polishing, laying out of<br />
work, etc.<br />
As a preparation for work on the machines, a careful investigation<br />
of each machine is required, to familiarize the student with its<br />
construction and various motions, the office of every bolt, nut, handle,<br />
gear wheel, etc., being determined, and the general design compared<br />
with other machin.es. The care of machines is considered at