Aschner, Lipót
(Assakürt, January 27th, 1872. – Budapest, February 6th, 1952.)
One of the success stories of industry in the first half of the 20th century is undoubtedly the outstandingly successful operation of United Incandescent-Lamp Factories, in which Lipót Aschner, General Manager of the factory, played a determining role.
In 1896, Aschner entered into the service of the United Hungarian Electrical Company, which had been just established and he worked here till the end of his life.
Ten years later, the name of the United Electrical Company was changed to United Incandescent-Lamp and Electrical Company by inserting the term of incandescent lamp into its name, and incandescent lamps were in fact regarded as determinant products of the company are simple objects, yet they cannot be manufactured without technical equipment or expertise. In 1909 the trademark TUNGSRAM was filed.
Aschner followed the development of the factory; during the year of his joining the factory 1,163,000 incandescent lamps were produced and at the turn of the 19th – 20th century 2 million.
Some years later, Lipót Aschner carried out cost analyses and economics calculations, through which he contributed to competitive production. Due to his successful activities he was promoted to higher positions and in 1918, he became general manager of the factory.
In 1922, modelled on the first industrial research laboratory in the world at General Electric Co., Aschner Lipót established the first industrial Research Laboratory in the country, which remained the only one for a long period.
Ignác Pfeifer, professor at the Technical University, directed it for a long time. In the middle of the 1920's, more and more up-to-date electron valves for radios rapidly coming into general use were developed in this laboratory.
Lipót Aschner also played an important role in the organisation of an international incandescent lamp cartel, the Phoebus-General Patent and Business Development Agreement. He was Vice President and President of this organisation several times.
Phoebus S.A. ensured that companies outside the cartel could not have a bigger share of the market than 5%. The factory took advantage of the possibilities provided by the cartel and the company was profitable until the last year of the war.
The history of the krypton lamp well shows the research and business policies Aschner successfully realised. Imre Bródi proved that krypton is more suitable filling gas than argon, but it was very expensive. Imre Bródy and Mihály Polányi developed the process of producing krypton from atmosphere.
After the German invasion Aschner was among the ones who were deported first by the Gestapo. He got to Switzerland from the Mauthausen concentration camp through exchanging of captives. Or to be more precise his mates could allocate the proper amount of money to the right place. Aschner – who was open-handed only in significant matters – also made a reproach to the financial management because of the large amount of money payed for an old man.
After the war – at the request of the Hungarian government – he returned home and stayed at the factory as general manager until his death or at least he played this role after the nationalization of the industry which was a condition for the factory to remain a joint stock company. Despite his old age he drove to work to the factory every day by his huge car which attracted attention in those days.
Factory at the end of the 19th century
Factory in the early 1900s
Delivery order of incandescent lamps (1904)
Packing lamps into barrels in the early years of the 20th century
Machine-room in the TUNGSRAM (1920s)
Headed notepaper of the TUNGSRAM
Advertisement of tungsten lamp.
The dame is supposed to be the wife of Lipót Aschner
Wolfram research laboratory (about 1920)
Radio tube catalogue of the Tungsram Co.
Early development of incandescent lamp
The filament of an incandescent lamp is a resistor. If electrical power is applied, it is converted to heat in the filament. The filament gets rid of heat mainly by radiation. The filament's temperature is very high, generally over 2000 degrees Celsius. At such a high temperatures, the thermal radiation from the filament includes a significant amount of visible light.
1809 - Humphry Davy an English chemist, produced the first electric light connecting two wires to a battery and attached a charcoal strip to the other ends of the wires. The charged carbon glowed making the first arc lamp.
1820 - Warren De la Rue enclosed a platinum coil in an evacuated tube and passed an electric current through it. The invention was worked but the cost of the platinum made it impossible for general use.
1850 - Edward Shepard invented an electrical incandescent arc lamp using a charcoal filament. Joseph Wilson Swan started working with carbonized paper filaments the same year.
1854 - Henrich Globel, a German watchmaker, invented the first true lightbulb. He used a carbonized bamboo filament placed inside a glass bulb. This filament was mentioned as lasting up to 400 hours. Some writer regard Goebel as the inventor of the incandescent lamp.
1875 - Herman Sprengel invented the mercury vacuum pump being necessary to make a really good vacuum inside the bulb.
1878 - Sir Joseph Wilson Swan, an English physicist, was the first person who developed a practical and longer-lasting electic lightbulb (13.5 hours) using a carbon fiber filament derived from cotton.
1879 - Thomas Alva Edison invented a carbon filament that burned for forty hours and placed his filament in an oxygenless bulb. Edison's design based on the 1875 patent he purchased from Canadian inventors, Henry Woodward and Matthew Evans. Next year he continued to improve his lightbulb until it could last for over 1200 hours using a bamboo-derived filament.
1903 - Willis Whitnew invented the metal-coated carbon filament that would not make the inside of a lightbulb turn dark.
1906 - The General Electric Company patented a method of making tungsten filaments for use in lightbulbs. The tungsten evaporate more slowly than carbon, however, the production was costly.
1910 -William David Coolidge improved the method of making tungsten filament made the production cheaper. The tungsten filament outlasted all other types.
The first industrial research institute of Europe
Lipót Aschner recognised that it was impossible to stay alive in a highly competitive market without targeted basic and applied research and development. He set up an industrial research laboratory and obtained Ignác Pfeifer - university professor of chemistry technology - to be its head. Pfeifer gathered a world famous research team: Imre Bródy, inventor of the krypton-filled lamp giving higher luminous efficacy and "whiter" light at the beginning of the thirties; Pál Selényi, the "father of xerography"; Pál Túry and Tivadar Millner who developed the large-crystal tungsten for the production of more reliable and even longer lasting coiled-coil filament lamps; Zoltán Bay and his team who successfully received micro-wave signals reflected from the Moon hardly a month after similar American experiments.
When Pfeifer retired in 1936, he was followed by Zoltán Bay as head. Aschner established the Chair for Nuclear Physics for him at the Technical University of Budapest. He directed the laboratory and participated in general management of the factory, as well. But in 1948, he saw hopeless the political conditions and left the country.
The research laboratory's successful activity between the two World Wars couldn't be repeated in the next half-century. The main reason was the obligatory imitation of the Soviet model, which entrusted only the daily matters of producing to the laboratory, the basic research level was reserved for the academic institutes, while the United Incandescent also created large numbers of development departments. Significant achievements were born also in this period but usually with a delay, and subsequent developments and sometimes also the copying of tested western devices occured.
In 1990 General Electric acquired majority in Tungsram and it set up several so- called "Centres of Excellence" in Hungary including Tungsram's Bródy Imre Research Institute, the Centre of Excellence for Research for the whole of GE Lighting business.
Early development of electron valves
1883- Edison (US), seeking the cause of blackening of incandescent lamps discovered current flow inside an evacuated light bulb. The "Edison effect" is the current flow from the negatively-charged lamp filament to a positively-charged separate plate located inside the light bulb.
1904- Sir John Fleming (England) developed a vacuum diode based on the "Edison effect" that could serve as a detector in a radio receiver. This was the beginning of the vacuum tube dynasty.
1907- Lee DeForest introduced the triode (three-element) vacuum tube (audion) interposing an electrode between the cathode and anode of the Fleming "valve". With the application of very low electrical energy, this third element, called the "grid", could control the large flow of current from the cathode to the anode.
1912- Western Electric Co.(WECo) used a modified DeForest audion to build a telephone amplifier. It open the way to long distance communication in 1915.
1912- Both H.D. Arnold and Irving Langmuir (US) found that the audion when operated with a very good vacuum became a stable device. O. Wehnelt's (Germany) developed the oxide-coated filament, giving a stronger electron source with lowered power consumption.
1915- Langmuir (GECo) and Schottky (Siemens AG - Germany) each developed the space-charged grid tube (tetrode).
1918- WECo and RCA (Radio Corporation of America) produced the first 50-watt power tubes.
1919- An "equi-potential" cathode was invented, permitting the use of AC voltage on the filament/heater of a tube without introducing any hum into the amplified signal. This invention would have eliminated the need for battery operation of the filaments. However, manufacturing problems and cost prevented its adoption.
1922- The invention of the copper-to-glass seal and the watercooling of the vacuum tube permitted huge increases in power handling. Vacuum-tube equipped transmitters jumped up in power from a 500-watt maximum to 50 kilowatts.
1927- The "equi-potential" cathode was finally put into service. This type of cathode, immune to noise and hum, was heated directly from a step-down transformer operating from the AC line.
1929- The new type four-element tube (tetrode) became the standard amplifier for both TRF (tuned radio frequency) and superheterodyne sets. This was the first advance in function since de Forest's Audion. The new element, called a screen grid, isolated the input (grid) circuit from the output (plate, or anode) circuit, resulting in much more stable operation and delivering much more amplification for each stage.
Pfeifer, Ignác
(Szentgál, September 30th 1867- Budapest, September 7th 1941)
In September 1887 he started his studies in the section of chemistry at József Technical University and got a diploma of chemical engineering here in 1892, and was an assistant lecturer for two years at the Faculty of Chemical Technology. A product of this period is the book entitled Alcohol tables of 735 pages
Laying down his position as assistant lecturer he started to work as a chemist in the chemical laboratory of MÁV (Hungarian State Railways). First he developed a procedure for the determination of the hardness of water; since then the so-called Wartha-Pfeifer process has been a part of the history of water chemistry. In his publications he dealt with the problems of the chemical purification of boiler waters and the reduction of corrosion and crustification for four years. He was engaged in heating technique, studied the suitability of home coals and proved the superfluousness of a considerable percentage of the import. His book entitled „Survey of Boiler Furnace Constructions” was published in 1898.
In 1900, after successful trial lecture he was appointed private professor at József Technical University. As a private professor he also undertook the edition of two journals.
Pfeifer opened a technical bureau in 1903. At that time he was engaged in problems of gas generators and assembled a gas analysing apparatus for them, he patented a process relating to the production of tar-free generator gas from brown coal. With Wartha he took part in the development of the gas factories of Budapest and he studied composition of natural gas in Hungary. He made a detailed proposition regarding the exploitation of natural gas. He was successfully engaged in the halogenation of carbon hydrides.
In 1907, on the recommendation of Wartha, Pfeifer was honoured with the title of assistant professor. He got the nomination of full professor at the Department of Chemical Technology and was for seven years one of the most successful professors at the Technical University
Later he was adviser for Gaswerk Baumberg in Hamburg, but he soon accepted the invitation of Lipót Aschner to be the head of the research and development laboratory to be established in United Incandescent-Lamp and Electrical Co. Ltd.
Pfeifer played a determining role in these years in the Hungarian Chemical Society where he was elected acting president in 1929.
krypton lamp
A lamp that has its space filled with krypton to produce a light source with unique characteristics. According to Imre Brody's hypothesis, the evaporation of tungsten atoms from the incandescent filament through the medium of gas was regulated not by diffusion only, but was also influenced by other physical laws of. To eliminate such problems, he used gas of greater molecular weight. By using krypton gas, the lamp attained longer life and better performance. By chosinig proper length and diameter of the incandescent wire the filament's glowing heat can be increased without reducing the lamp's life span.