This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
The nozzle shown in the accompanying sketch was made from an empty tobacco can having an oval shape. I cut the can in two near the center and punched small holes in the bottom. I then cut a piece of 1/2 -in. board to fit tightly in the end of the can and turned the edges of the tin down to hold it in place. A hole was bored in the center of the wood and a 1/2 -in. hose coupling fitted in it. The water will swell the wood enough to make an absolutely watertight joint, but by using a little care in fitting it, the joint will be watertight without the swelling.
The holes being punched in straight lines, the nozzle throws a rectangular section of fine streams, which makes it possible to sprinkle close up to walks without wetting them. The friction is much less than in the ordinary hose nozzle, and consequently this nozzle delivers more water and also materially reduces the strain on the hose. - Contributed by J. B. Downer, Seattle, Washington.
Ill: The Oval Form of the Box Makes It Possible to Sprinkle Close Up to Walks