First of all, the solid foam hollowed out, with wires connected to a good small motor, stuffed into the foam (to keep the rotor shaft of the small motor to leak out of the foam), in the wire connected to the batteries, but also stuffed with such as the foam, scissors to cut the small pieces of paper into rows, sets in the rotor shaft of the small motor can be!
Said the invention production.
A small fan, just need a small motor, two 5 batteries, and some short wires, a solid plastic foam, a pair of scissors, some cardboard!
First of all, the solid foam hollowed out, with wires connected to a good small motor, stuffed into the foam (to keep the rotor shaft of the small motor to leak out of the foam), in the wire connected to the batteries, but also stuffed such as the foam, scissors to cut the small pieces of paper into rows, sets in the rotor shaft of the small motor can be!
Sprinkler. Take a can and poke holes in the end.
Grab an empty eggshell and put wax on the outside (thinly)
Paint on it with a pointy object (carve through the wax)
Put it in vinegar for a couple of hours, take it out, and get rid of the wax
The color of the carving is darkened by the vinegar
And there you have it, a little piece of work!
The popular drying racks nowadays usually don't have the windproof function, and users often encounter this kind of annoyance: a piece of clothing that has just been washed and hung on the rope to dry, when the wind blows, it falls to the ground and has to be washed again. I invented the self-locking windproof hooks can help you solve the problem. The above figure is the principle diagram of self-locking windproof clothes hook: In the above figure, (1) is the locking sleeve, (2) is the locking column, which through the spindle (3) and the crank (4) to form a lever, which in the counterweight (5) under the action of (3) as the pivot point of rotation. When drying clothes, just lift up the crank (4) by hand or hook, under the action of gravity, the locking sleeve (1) and the locking post (2) will be separated automatically, and the user can hang the hook on the rope smoothly, and then release the crank, under the action of the counterweight (5), the locking post (2) will be combined with the locking sleeve (1) automatically to complete the process of self-locking, and form a lock with the hook (6), so that it won't fall down automatically no matter how much the wind blows The hanger will not fall down automatically no matter how the wind blows. The process of removing the hanger is also very simple: just use your hand or the hanging hook to lift the crank (4) upwards, the lock will be opened automatically, and the user will be able to remove the hanger easily. The self-locking windproof hanger not only can be hung by hand on a rope to dry clothes, but if the clothes are to be hung higher to dry, the user does not need to climb up, just use the hanging hooks to hold the crank handle, and then the clothes can be easily hung up or taken down. At the same time, the hanger is also characterized by simple production, good reliability and low cost. This small invention of mine has been awarded a national invention patent.
The face cover of this cardboard box is usually covered, which can prevent the entry of dirt and dust. When you want to use the paper in the box, as long as you lift the lid, with the lid lifted, the box of paper will be automatically lifted, access is very convenient. When you are finished, the lid will be restored to its original position. This automatic carton is most suitable for toilet paper. The size of the box can be designed according to your needs. Provided by CTE Star Multimedia Teaching Resource Library