Calendar: 1886-1887 Page 713

APPLIED SCIENCES 715 Sketch the leading features of twist drill for metal showing the angle of the cutting edge What is fair feed for such drill say -inch diameter Describe the action of the slot drilling machine and the kind of drill required for its operations Sketch sectional view of the spindle of vertical drilling machine showing the driving wheel and feed gear With leading screw of to the inch give the change wheels for feed of 60 to the inch and show ready arrangement for reversing the cu Describe the modern trepanning bar for heavy boring and its advantages SECOND YEAR Describe the method of producing an original surface plate Describe the ordinary boring bar and the method of fixing the cutters in the boring head for cylinders of large diameter Describe the points to be attended to in making and tempering chipping chisel What are the chief points to be attended to in fitting lathe mandril And what are the effects of badly-fitted mandril Give sectional sketch of the poppet head of 5-inch lathe י ד' What is the angle adopted for the thread of Whitworth screw And how is the depth of the thread regulated FIRST YEAR What are the points to be attended to in trying plane to secure its correct and easy working Sketch and describe the method of securely wedging dry mortice and tennon joint