|
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese|
HISTORY OF TECHNOLOGY, TECHNOLOGY, OBJECTS AROUND US
Aerosol can. History of invention and production
Directory / The history of technology, technology, objects around us Aerosol can (propellant) - a device for spraying liquid substances or paint, used mainly in everyday life.
Gas (propellant) and useful contents are pumped into the cylinder under pressure. Air can also be used as a propellant, but this would result in high pressure in the tank. Therefore, an easily liquefied gas is used to keep liquid and gas in equilibrium. They try to mix the liquefied propellant well with the useful contents (to save space in the cylinder). When the valve is opened, the pressure of the gas pushes the contents out. In return, part of the propellant evaporates, returning the pressure to its original mark.
In the XNUMXth century, the first carbonated soft drinks appeared on sale in France, a hundred years later the siphon for their preparation was invented, and at the turn of the XNUMXth century, inventors began to put not only drinks inside such containers. The first step towards the widespread use of aerosol cans was made by the Norwegian inventor Eric Rotheim, who in 1927 patented a valve of his own design for making cans. But his invention was not widely adopted. The revolution in this industry was made by Robert Abplanalp, a descendant of emigrants from Switzerland who settled in the Bronx. From an early age, Robert spent all his free time in the workshop of his father, a mechanic by profession, and at the age of seven he already skillfully handled machine tools. Not surprisingly, after graduating from high school, he went to Villanova University in Pennsylvania to study engineering. Three years later, Robert left the university and founded his own workshop in the Bronx. But in 1943 he was drafted into the army, and when he returned three years later, he found his business in a deplorable state - with a loss of $ 10. Interrupted by random orders, Robert took on any repair - from sewing machines to radios, and one day luck smiled at him. In 000, one of his clients asked for a broken washing machine to be fixed, and Abplanalp got to talking to him. The client, whose name was John Bessler, turned out to be an aerosol can salesman. These canisters, developed in 1943 by engineers Lyle Goodhue and William Sullivan, made it easier to spray repellents and thereby reduce the incidence of malaria among American soldiers in the tropics. They were compact, thin-walled and filled not with compressed, but with liquefied gas (freon). But the valves of the cylinders caused constant complaints from buyers - they constantly clogged and leaked. Abplanalp, to whom Bessler complained about these problems, became interested and asked to leave him some samples. Returning a few days later for the washing machine, Bessler found that all the samples had been sawn and carefully examined. Impressed by such a fundamental approach, he introduced Robert to the chemist Fred Lodes, who taught the young mechanic a short but intensive course in the chemistry and physics of aerosol containers. As a result, after three months of experiments, Abplanalp achieved the desired result - the valve he developed consisted of only seven metal, plastic and rubber parts, did not clog, did not leak and cost ... 2,5 cents instead of the original 15! In 1949, Abplanalp filed a patent application (in 1953 he was granted patent number 2631814), and together with Bessler and Lodes (he later bought out their share), he organized Precision Valves Corporation. The company paid for itself in just a year, and in 1950 its annual output was 15 million valves. Today, Precision Valves has subsidiaries in more than 20 countries and manufactures more than 4 billion aerosol valves per year. Author: S.Apresov
Artificial leather for touch emulation
15.04.2024 Petgugu Global cat litter
15.04.2024 The attractiveness of caring men
14.04.2024
▪ Cooler Master G Power Supplies 500, 600 and 700 W ▪ Schneider Electric Uniflair Cooling for Large Data Centers ▪ New material for OLED displays with IGZO-TFT transistors
▪ section of the site Car. Article selection ▪ article Can astronauts cry? Detailed answer ▪ article Krasnoyarsk Pillars. Nature miracle ▪ article Smooth ignition of lighting. Encyclopedia of radio electronics and electrical engineering ▪ article A simple test receiver. Encyclopedia of radio electronics and electrical engineering
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua |
We recommend interesting articles Section 
See other articles Section 
Latest news of science and technology, new electronics:
All languages of this page