Winding Gear. Cut two pieces of stripwood, ¼" x ½" x 2", J and K in Fig. 304. Round their tops, drill and enlarge holes in them.
A hole must now be made through the centre of A, to enable this part to rotate on the foundation H, so that the crane may swing round in any direction. One of the simplest ways of doing this is to use a rivet, but if such is not procurable a screw may be used; the hole in A is made large enough for A to turn easily on the pivot which can be screwed into H. Before this is done, pieces J and K are fastened to A about one inch apart. To do this, drive nails right through A in correct positions, glue the ends of J and K and hammer them on to the nails. The head of the nail should rest on a piece of metal when the wood is being hammered down on its point.
The support B should now be glued and nailed to A. When B is firmly fixed the arm C is fastened to it. The hole in the centre of A must be left clear.
A is now riveted or screwed to H. A wooden axle, P, is made to pass through holes in J and K, and to the ends of this axle wheels are glued. (The figure shows one only.) The wheels can be made from reels, or several discs of cardboard gummed together. Before glueing on the wheels, wooden handles, L, are fastened to them. A wooden handle O is fastened to A. This is used for turning the crane. A piece of stout thread is tied to and wound round P and passed over the pulley. To the end of this a hook is fastened, made from wire or a bent pin. Bags can be made and filled with sawdust, etc.
Plate XI A CRANE
[CHAPTER VI]
WINDMILL, WATER-WHEEL, AND WELL
Windmill (Plate XII). Cut a square of wood, side 5 inches. This is the stand A in Fig. 306. To the centre of this glue a large reel, B.