The accompanying illustrations show how a lawn sprinkler can be made, First take a one-half-inch street ell and drill a hole through it. Into this drive from the inside a large wire nail, and solder the same. This nail is to stick into the ground and hold the sprinkler in an upright position. Now screw on the male end of the ell an ordinary pipe coupling; and on the female end solder an ordinary half-inch hose coupling, so as to connect to the garden hose.

Now take a block of end wood and cut out a cone-shaped recess. Make a round plug of wood, and shape the end a little smaller than the recess in the block. Take a small thin piece of brass about 1 1/4 inch in diameter and anneal same. Place this brass disk on top of block and with a few quick blows with a hammer drive the plug down into the recess in the block and the brass disk will assume the shape of the recess in the block. Now drill four holes, say about 1/8 inch diameter, diametrically opposite each other, and solder this cup-shaped disk to the pipe coupling as shown in the cut, and the sprinkler is ready for use. With ordinary water pressure it will throw water in a 30 to 40-foot circle.

Fig. 304 - A home-made-lawn sprinkler.