Calendar: 1887-1888 Page 683

APPLIED SCIENCES 687 What is toggle י joint and how is it applied in printing machines Sketch and describe the Cordelierי for rope making and explain fully the action of the epicyclic train of wheels which is attached to it Jhtftrumtntal Ih'aim'ng SECOND AND THIRD YEARS right hexagonal prism having all its edges long has its axis vertical Two of its edges make angles of 20 with Its upper face is 6" from the ground plane and its nearest corner in plan to is 1" distant from it Show in elevation the shadow cast by the prism Construct an octagon from the following data AB 70 AC 70 AD 95 ΑΈ 75 AF 105 AG 105 AH 55 BAC 20 BAD 35 BAE 60 BAF 100 BAG 110 BAH 150 Convert the figure into square of equal area Scale 30 Represent in plan and elevation three right lines each 5" long and crossing each other at their centres and at right angles to each other One of the lines is at 60 with and 45 with pyramid axis vertical and 463 high base pentagon of 205 side having its nearest face to us parallel to xy pierces sphere of 383 diam The centre of the sphere is in the same horizontal line as the centre of the axis of the pyramid This line makes an angle of 60 with and the two centres are 125 apart Give all visible lines of penetra- tion in the elevation ft Κ pentagonal prism high and its ends containable within circles of diameter stands erect upon one of its pentagonal faces one of its rectangular faces making angle of 27 with It is pierced by right cylinder long and having diameter of The axis of the prism and of the cylinder intersect at their centres and the latter is parallel to and at angle of 30 with Show plan and elevation