626 



Popular Science Moid/ily 



used, it should be applied while it is very 

 hot. Clamp the disks together with stiff 

 blocks and heavy bolts, putting one bolt 

 through the shaft hole and several around 

 the outside. The bolts should be tight- 

 ened as much as possible so that the disks 

 will be pressed together very tightly. 

 Allow the glue to dry for at least twenty- 

 four hours in a warm — not hot — place. 

 Put in screws, countersunk from both 

 sides for additional strength and to pre- 

 vent the glue from loosening. The pulley 

 can be trued up when running on its own 

 shaft. Make the belt face of the pulley 

 slightly crowned, because if the face is 

 flat, the pulley will run off. The surface 

 should be made as smooth as possible, as 

 the smoother it is the better the belt will 

 hold. 



The only difference between making a 

 cone pulley and a plain one is that the 

 steps are made separately and then glued 

 or screwed together. 



A Lawn Mower Converted Into a 

 Handy Truck 



1AWN mowers serve their original 

 -/ purpose only about four months of 

 the year. During the re- 

 mainder of the year they 

 are stored. A mower can be 



An inverted lawn mower equipped with a 

 board platform to make a truck for small 

 loads thus making it useful in the winter 



made to serve two purposes with the 

 board attachment shown. It is well 

 known that pushing an inverted lawn 



mower throws the gears out of mesh. 

 The board attachment may be easily 

 made and put on the inverted mower so 

 that it may be used for hauling small 

 loads or sacks of grain. 



The size of the board depends on the 

 size of the mower. The manner of at- 

 taching it to the inverted mower is clearly 

 shown. — Earl R. Gaskill. 



A Dam to Prevent Top Soil from 

 Washing Away 



/V SIMPLE and inexpensive method 

 x\ of preventing a field from becoming 

 cut up by gullies is shown in the drawing. 



Cross section view of a small concrete dam 

 which keeps the soil from washing away 



Some lengths of sewer pipe and a fev/ 

 hours work in the building of a small con- 

 crete dam across each gully is all that is 

 required. The drawing shows how the 

 dam operates. 



It is a good plan to set three or four 

 posts around the opening or the inlet and 

 then wrap them with common mesh 

 fence wire so that all rubbish and trash 

 will be kept out of the sewer pipes. In 

 laying the pipe be sure and set the curve 

 or elbow on a firm bed of stones and also 

 be sure that the whole length of pipes is on 

 a solid footing. 



The concrete dam is preferable although 

 hard clay has been used for small places. 

 The dam catches the top soil washed 

 from the fields and also stores up the 

 surplus water. The richest part of the 

 soil is the part that washes away during 

 heavy spring rains. Some practical 

 method of preventing this great loss is 

 well worth the farmer's attention if the 

 producing power of the fields is to be con- 

 served or increased, and the method of 

 surface drainage suggested above is at once 

 practical, simple to install, inexpensive 

 and effective. — W. E. Fhudden. 



