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DRAWING
In mechanical drawing we have two systems practiced. In both of them there
is a severance from the traditional geometric,' picture-drawing method.
In Division "A" Mr. Thalmann has developed the drawing of shop operations
into a system: The nucleus of the system is this: the boy with a finished
machined piece in hand is taught to think out the processes which have brought
the piece from the rough casting to its present state. His knowledge of machine
shop operations is drawn upon and he is compelled to visualize the piece both
before and after each operation. From the finished piece he must draw what
he conceives to be the original casting or forging. In separate working drawings
he next shows the results of successive operations. This method gives close
correlation between his shop processes and drawings, yet lays most emphasis
on machine shop operations. Working drawings are also made to accompany work
done in the study of shop practice. Sheets of screw-threads, bolts, nuts,
etc., are also made for reference.
In Division "B" Mr. Hamilton's system carries the principles of
mechanical drawing through a series of working .drawings of parts of a complete
machine. The machine is disassembled and each piece measured preliminary to
a pencil sketch; the preliminary sketch is used as the basis for a finished
drawing.
Principles of drawing, which are not required in work on the above machine,
are developed through other drawings of cams, etc. Special emphasis is laid
on original drawings of jigs and fixtures designed for use in machining parts
for which a series of operations and tools has been worked out by the boy.
The object of both drawing systems is not to train boys for the drafting-room,
but to give insight into drawings and facility in interpreting them. Several
boys have entered the drafting room after completing part-time training for
machinists and have been able to use the drafting knowledge acquired in the
classroom shop operations is drawn upon and he is compelled to visualize the
piece both before and after each operation. From the finished piece he must
draw what he conceives to be the original casting or forging. In separate
working drawings he next shows the results of successive operations. This
method gives close co relation between his shop processes and drawings, yet
lays most emphasis on machine shop operations,
SCIENCE
In my last report I made mention of the new course in Machine Shop Science
being worked out by Mr. Forbes in consultation with Mr. C. R. Allen, Agent
of the State Board of Education. This course was completed, a number of specially
designed machines constructed, and a room in the basement of the school fully
equipped for the work. The State Board published the -course in pamphlet form
and have given it wide circulation as an illustration of the application of
science instruction to a particular trade.
Several schools in the state are expecting to model courses on this new course.
The outline of the printed course is here appended as it is not elsewhere
accessible in print.
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