Cement and Concrete Fence Posts. 7 
bearings. The sides of the box are made of one-inch lumber and 
are simply nailed to the ends with I2d nails. One-half of the box 
is made so that it can be detached and lifted off when the mixer is 
to be filled, or emptied. The detachable half is secured to the other 
half by means of strong hooks so placed that by slipping this half 
about an inch to one side all of the hooks are loosened at once. 
After it is in position, the removable portion is held in place by 
means of a barn door latch. 
The driving gear is simple but very effective. It consists of 
the rim taken from the wheel of an old “rubber tire buggy.” With 
the tire removed the grooved rim makes a very satisfactory wheel 
upon which to run a J^-inch rope belt. The belt is driven by a small 
shieve pulley which is fastened to the counter shaft. A belt tight- 
Figure 1. 
Home made concrete mixer operated by 2-horse-power hand portable gaso¬ 
line engine 
ener is used upon the rope, and by using a very loose belt, the 
tightener is made to act as a friction clutch. 
This particular mixer is driven by a two-horse gasoline engine, 
which is belted to the counter shaft. The engine runs continuously 
and the mixer is started and stopped by means of the belt tightener. 
The operator first fills the mixer about half full of sand, gravel 
and cement in the correct proportions. He next lowers the lid, 
which until this time has remained supported upon the hook. The 
lid is now pushed into place and the latch fastened. The supporting 
hook is next removed from the staple in the lid and hooked into a 
