It is possible, with the above, to make 1,620 combinations, but I wouldn’t advise you to try it just yet. It is also possible to use fewer circuits if you wish, and get good results; but I have chosen the above as giving the best results for the labor expended. I have previously told how lamps can be colored for this kind of work.
ELECTRIC REVOLVING CHRISTMAS TREE.
This is an excellent window feature for the holidays, or it would make a beautiful interior display for the toy department.
Instead of trimming the tree with the old style glass bells, use colored electric lights and have the tree revolving.
The cost is very small, and can be quickly constructed, and when artistically trimmed with toys, etc., makes a very beautiful feature.
How to go about it: First, secure a good shaped tree, the size you wish to use, A. Then trim off the limbs at the bottom; cut a hole through the floor in the center of window; put the bottom of tree through this hole, resting the end upon a revolving counter stool D. See that it is well oiled. If you have no stool, use any suitable pivot. Smooth around the tree below the limbs; put plenty of graphite on and nail a collar to the window floor. This will make a good bearing. Next get a split pulley B, and fix around the tree. This connects with motor. If you wish to reduce the speed, make a reducer, as shown in electric fountain drawing in last chapter. The wiring is of the simplest kind, and has already been thoroughly explained. Be careful to insulate well all connections. C shows block of wood with brushes attached. The strips of copper nailed on pulley B show the contact and cut-off. You can use as many or as few lights as you wish. To color the bulbs, use Pikron for glass, which comes in all colors.
This is so simple in construction that any amateur will grasp the idea readily. It is an excellent Christmas attraction.
ELECTRICAL REVOLVING CHRISTMAS TREE.