Small invention and small production

When you go home to do your homework, you often have to copy books. When copying a book, the book lies flat on the table, which looks very laborious. I made a simple bookshelf, so that the books can be placed sideways, which looks very convenient. Find a wire, bend a shelf according to the size of the book, and form an acute angle between the legs and the frame body. The acute angle < P > is determined according to your own needs. When you use it, just insert a book. Drawer that can't be pulled out When you are in a hurry to pull the drawer, you will pull the drawer out of the table and knock it over. I thought for a moment, nailed a small nail in the back of the drawer and in the table, and tied a string shorter than the drawer (pictured). In this way, when the drawer is pulled to a certain position and restrained by the string, it will never fall to the ground again.

51. Drawer under the chair

"Where's my schoolbag?" The schoolbag was hung on the wall just now. When everyone at home came back, the wall was covered with clothes, and the schoolbag was buried somewhere. My family is large and small, so it is difficult to find a place for our children to put things. I looked for a place in the house, and finally found that the bottom of the chair was empty. On the crosspiece of the chair foot, I nailed a piece of plywood and put my schoolbag there. No one competed with me for territory anymore.

52. Improvement of zipper

The common zipper has a disadvantage: when pulling, the entrance of the lock often clamps the edge of the clothes, which is not only difficult to pull, but also easy to damage the clothes and zipper. After many experiments and studies, I found an improved method. On the upper and lower sides of the lock entrance, an oval metal sheet (i.e. the upper and lower push pieces in the figure) is welded respectively. When pulling the lock, the metal sheet first pushes the edges of the clothes on both sides away, so that the lock can pass smoothly and the clothes can no longer be clamped.

53. Needle-threading machine

Mother often delays time for needle threading when making clothes, especially when using a small needle, the fine hole of the needle is also small, which makes it more difficult to thread the needle. The pinhole on the sewing machine is not facing the eyes, and it is not convenient to thread the needle. I want to use hook lace to lead the wire, but unfortunately the hook needle is too thick to reach into the pinhole. I think it would be nice to have a tiny crochet. One day, I found that the thin steel wire in the bicycle flywheel was thin and hard, so I sharpened one end of it with an oilstone and clipped out a small crochet with a small tweezers. For the convenience of holding, just wrap the thin steel wire around a ring and leave a guide rod at the other end.

please see the figure for the method of threading the needle.

54. Hair needle threader

Needle threading is the biggest headache in needlework. I made a needle-piercing device. You can try it.

find a piece of cardboard and cut it into the shape of the upper left picture. Punch a small hole in the upper left of the cardboard with a needle tip. Take a piece of hair, double-fold it, put both ends through the hole and tie a fast knot on the back. Leave the round head side by side on the front of the cardboard. When threading the needle, hold the cardboard in your left hand and hold down the tight hair with your thumb. Press the needle on the cardboard with your right hand, aim the needle hole at the hair, and slowly push it to the left. Because the hair is hard, it can easily pass through the pinhole. Then thread the thread into the hair, move the needle to the right, so that the hair comes out, and the thread goes into the pinhole. Use fine copper wire instead of hair wire, and make a needle piercer according to the above method.

55. Double-pointed embroidery needle

Generally, the needle hole is at one end of the needle. After threading the thread, the needle always turns over repeatedly (so that the needle tip faces the cloth surface), so that it can shuttle on the cloth to sew successfully. Embroidering like this is quite troublesome.

inspired by the shuttle that weaves fishing nets, I invented a double-pointed embroidery needle that can embroider back and forth. The needle hole of the double-pointed embroidery needle is in the middle of the needle, and both ends are needle tips. When embroidering, the needle doesn't have to turn back and forth on the cloth. It is very convenient to thread the thread in the hole by threading it back and forth with two needle tips on the cloth.

56. Windproof matchbox

It is not easy to strike a match in the wind. I designed a matchbox that can prevent wind.

I peeled off the phosphor skin that struck matches on the matchbox and stuck it on the outside of the two ends of the inner box of the matchbox (as shown in the picture). When in use, the inner box is pushed out by a half, and a match is taken to strike a match on the phosphorus skin on the side of the inner box which is retracted into the outer box. Matches are not easy to extinguish because of the outer box against the wind. It is suggested that the match factory produce such matches.

57. Windproof matchbox cover

When the wind blows, it is difficult to strike matches in the wild. As long as you make a tin matchbox, you can strike the match. Find a piece of white iron and measure its length, width and height according to the dimensions in the picture. After drawing the line, cut it along the solid line and then fold it 9 with the dotted line. On the surface of the matchbox, at the place opposite to the buckle, draw a seam, insert the buckle into the seam, bend it over, and the tin box is ready. When using, put the matchbox into the tin box cover, but leave a big gap. Holding the tin box cover in one hand and scratching the phosphorus surface of the matchbox in the other hand, it caught fire. Because of the protection of the tin box cover, it is not easy to be blown out by the wind.

58. Inflatable raincoat

When wearing a raincoat, the bottom edge should always be attached to the leg, and the rain will wet the trouser legs and shoes and socks along the raincoat. Probably because of this, people prefer using umbrellas to wearing raincoats. But it is inconvenient to carry or carry things under an umbrella.

I have an idea: put an inflatable plastic tube at the bottom of the raincoat, and blow it fully when wearing it, so that the lower half of the raincoat will be spread like an umbrella. The raincoat won't stick to the leg, and the trouser leg won't get wet. Let the air out when not in use, and you can fold it and store it.

59. Clothes hangers with buttons

When drying clothes, clothes hangers are easily blown off by the wind. What should I do? Just make a clothes rack with buttons. Bend a small circle on the hanger, put a rubber band at the bottom of the hanger, and tie a small iron ring at one end of the rubber band. After hanging the hanger on the rope, put the two small traps together so that the hanger will not fall off.

6. Automatic clothes collection

There is no one at home, and the clothes are hanging on the rope outside. What if it rains? I use iron wire to bend into a right-angle hook that is a bit like a slingshot. One end of the hook is flat, and the other end wraps two iron wires into a small ring. The flat end is inserted in the wire ring nailed to the trunk. Two small rings at the other end, one tied with rubber bands, hung on the branches; The other ring is tied with a paper rope, which is attached to the nail on the lower part of the trunk. One end of the clothesline is tied to the nail under the rain curtain in front of the window, and the other end is tied to the hooked and looped end of the wire. Adjust the tension of paper rope and rubber band, so that the rubber band is tight and the clothesline is balanced. When it rains, the paper rope breaks wet, and the rubber band pulls up the clothesline, and the clothes rack on the clothesline will slide to the lower end with clothes and under the rain. A funnel can be installed on the paper rope.

61. Rain-proof clothes rack

Set up a bamboo pole four or five meters away from the wall. Use a thin piece of iron wire, one end tied to the top of the bamboo pole and the other end tied to the wall. The top of the bamboo pole is tied with a pulley or a reel. Find two thin ropes, one end of which is tied to the top of the bamboo pole, and the other end is tied with a small iron hook to bypass the pulley; One end of the other rope is wrapped with a monkey rubber band, which is tied to the wall, one end is tied with a small iron hook, and several loops are tied in the middle. The rainproof clothes rack is ready. On a sunny day, when people are at home, hang two wire hooks, put a hanger over the rope loop, and hang them on the wire to dry clothes. Sometimes people go out for fear of rain and wet clothes. Add a piece of paper tape between the two wire hooks (just twist the sanitary paper a few times). As long as it rains and the paper breaks in the rain (or the wind breaks the paper tape), the clothes will slide under the eaves along the wire. In order to prevent the clothes from getting dirty, it is better to paste a piece of paper or put a board where the clothes slide down against the wall.

62. Clean the air cylinder

There is lubricating oil on the piston rod of the air cylinder, which is not only easy to stick to dust, but also easy to stain clothes. In order to overcome this shortcoming, I thought of a way: put a folding oil-proof hose on the piston rod. The two ends of the tube are respectively installed at the upper ends of the handle and the air pump. Pressing the handle hose can shorten the folding, and lifting the handle hose can extend with the unfolding. So that the piston rod can be sealed in the hose.

63. Mud scraper for bicycle

Riding a bicycle on a muddy road, the mud stuck on the tire will stick between the wheel and the fender, making it difficult to ride. In order to scrape the mud off the tire adhesive tape at any time, I designed a mud scraper.

The mud scraper is made of iron sheet (as shown in the figure), which is divided into two parts: the mud scraper and the plug board, and the middle is connected by two

lead wires. When in use, insert the insert plate into the lower end of the fender, slightly bend the lead wire, and make the mud scraper as close as possible to the tire, so that the mud shovel can be scraped off at any time. When not in use, just unplug it.

64. Car light with two lighting areas

I rode home at night and bought a car light. There is an ordinary lamp bead in this lamp, which is not far away and has a small illumination area. I found that the light emitted directly from the front of the lamp without being reflected by the reflector could not illuminate the road because of its large diffusion surface, and it was wasted. In order to make use of this light, I found a spotlight bead with a lens biased to one side and installed it in the car lamp, thus making full use of the light emitted by the light bulb and forming two light zones in front of the car, one far and one near, which is very suitable for riding at night.

65. Brush that doesn't drip slurry in the shed

When painting the ceiling and the roof of a house, the brush often flows downward, which makes people and the ground all over. I designed a kind of brush, which is covered with a plastic sleeve. When brushing the ceiling, the slurry falls down and falls into the sleeve, so that it won't drip out. When the pulp in the sleeve is full, pour it back into the pulp bucket and use it again, so you can kill two birds with one stone. The plastic sleeve can be made of waste plastic bottles. Cut off the bottom of the bottle, put the bottle mouth into the brush handle and tie it with iron wire.

66. Diversion line

When it rains, the eaves water not only prevents us from going in and out, but also splashes the door. How nice it is to draw the water away! I found a dozen strings, tied a small stone at one end, put them in the tile trough, hooked the eaves of the tiles, and the hanging rope ends were pulled to both sides, and the water in the eaves was drawn away.

67, bean sprouts bed

When you have bean sprouts in your family, you should always pour water. Too much water will rot, and too little water will get old, which is really troublesome. After repeated experiments, I made a bean sprout bed with automatic water absorption, which can supply suitable water to bean sprouts. Spread a layer of absorbent cotton under the ordinary bean sprout bed, spread a layer of cloth on the cotton, and sprinkle mung beans on the cloth. Absorbent cotton presses down some cloth strips, so that the cloth strips pass through the small holes at the bottom of the bed and hang down into the bucket filled with water. Due to the capillary action, water rises into cotton along the cloth strip and soaks mung beans, and bean sprouts will grow quickly.

68. Egg Picker

My family is a professional duck farmer, and my grandfather picks up hundreds of duck eggs by the pond every day. Squat down, stand up ... Make grandpa's back ache and his legs ache. In order to reduce grandpa's labor, I designed an egg picker after many experiments. Grandpa can pick up the eggs and put them in the laundry basket without the waist of a cat. Find a bamboo tube with a length of about 25 cm and a diameter slightly larger than that of duck eggs. One end of the bamboo tube is sealed by bamboo joints, and the other end is sawed into a bevel. Saw off the lower quarter along the round end face of the bamboo tube. Put a wooden handle on the side of the bamboo tube. The production is finished. When in use, put the bamboo tube flat on the ground, with the oblique mouth facing the duck eggs, and put the eggs into the tube. You can pick up five eggs at a time and put them in the basket.

69, automatic chicken feeder

In the process of helping my mother feed the chickens, I found that it is also a knowledge to feed the chickens: if you add too much, the chickens will step on the plane and waste the feed; If you add less, the chickens will starve. If only there was an automatic feeding trough, it would be good to automatically add as much as you eat, and not to add when you are full.

according to this idea, I designed an automatic chicken feeder (as shown in the figure): the feed is placed in the rectangular

feed box above, the bottom of the feed box and the trough are bent by a piece of iron, and there is a gap between the bottom and the front side plate of the feed box that can just leak food. When the chicken pecks, the trough vibrates, and the feed keeps falling from the gap to replenish the feed in the trough. Stop pecking and the feed won't leak down.

7. Automatic water feeder

This water feeder is simple in structure and convenient for poultry and livestock to drink water. As shown on the right, nail an upright post on the edge of the sink, and nail two bottle clips made of lead wire on the upright post. Pour some water into the sink first, then fill the bottle with water, block the bottle mouth with your fingers, and put the bottle upside down on the clamp so that the bottle mouth is just next to the water surface in the tank. Let go of your finger, and the water in the bottle will not flow out. This

is due to the atmospheric pressure. When the chicken goes to drink water, when the water level in the tank drops off the bottle mouth, the air will enter the water bottle from the bottle mouth, and the water will flow into the tank. When the water level in the tank is flush with the bottle mouth, the water stops flowing. This is a water feeder that can automatically add water. If you want to give water to livestock, you can make a big water feeder as shown on the left. However, it should be noted that

the bucket cover behind the wall must be tightly covered, and there can be no air leakage.

71. Automatic siphon

The most convenient way to change water in a fish tank is to suck out the old water with a siphon and then inject new water. In the past, it was inconvenient to fill the siphon with water by mouth suction or to add a piston in the siphon. So, I designed the automatic siphon. The automatic siphon is shown in the figure. At the lower end of a section of latex tube (or plastic pipe), a sieve cover made of plastic medicine bottles is installed, and at the upper end of the pipe, a balloon made of rubber balls is installed. There are two holes in the rubber ball, one hole is filled with the valve tube on the bicycle inner tube, and then the latex tube is sleeved on the valve tube; The other hole is a water hole.

When using, first plug the water outlet hole with your fingers, pinch the rubber ball, and immerse the end of the screen cover in the water.

Slowly loosen the rubber ball. When the water is full of latex tube, hang one end of the water outlet hole and the water will automatically flow out.

71. Magnetic straw mixing stick

In the past, a cow in the production team died of illness, and a lot of iron things were taken out of his stomach. After the implementation of the responsibility system,

my family fed a cow. Every time I feed the cows, my father should sift carefully and pick out the nails, wires and

iron filings in the forage.

eating iron east and west by mistake is so harmful, how can we clean them up quickly? I installed a magnet on the reed horn at the lower end of the grass mixing stick, and absorbed all the iron east and west in the grass while mixing

. I named it magnetic grass mixing stick.

72. Let cats and dogs be afraid of chickens

Several families in our team have cats and dogs. As soon as they see the chicken, they catch it and eat it. In 1981, a family bought more than 3 chickens, and all of them were eaten by dogs and cats in less than 2 days. My family also has chickens, cats and dogs. Cats and dogs don't eat chickens, and they are a little afraid of them. Why is this? At first, my mother bought a chicken, but she didn't dare to put it on the ground. Instead, she put it in a basket and hung it on a hook high up. When I was at school, I saw a group of bees and thought: people are bigger than bees, but they are afraid of bees because they are afraid of being stung. Won't we think of a way to scare dogs and cats and make them afraid of chickens? I grabbed a chicken in my right hand and let the head of the chicken stick out from the tiger's mouth. I held a needle between my thumb and forefinger, and the tip of the needle was a little longer than the chicken's mouth. Then the cats and dogs were caught, and the needles hidden under the heads of chickens were used to prick the mouths and noses of cats and dogs for more than a dozen times for three or four days. Ha! How effective! Cats and dogs are scared when they see chickens. Not only are they afraid to pounce on chickens, but they also make way for them. When the cat and the dog were eating, the chicken rushed to eat. When the cat and the dog saw the chicken coming to the bowl, they dodged.

73. Turn over the board to catch mice

After many experiments, I designed a good way to catch mice. Find a deeper water tank (a bucket is also acceptable). Sawn plywood or other thin plates into a circular disc with a diameter about 5 mm smaller than the inner diameter of the water tank, and a thin rod longer than the outer diameter of the water tank is fixed in the middle line of the circular disc as a turning plate. The lighter the material, the better. After the flap is completed, put the two ends of the thin rod on the cylinder mouth, and one side of the flap is also on the cylinder mouth, so that the plate surface is parallel to the cylinder mouth. So that the turning plate can turn freely at the cylinder opening. When in use, put a little water in the water tank; The flap is not fixed on the other side of the cylinder mouth.