Heinrich Joseph Hermann Lemp

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Heinrich Joseph Hermann Lemp (born August 8, 1862 in Bern , † March 31, 1954 in Ridgewood , New York ) was a Swiss-American engineer.

His parents, Heinrich Lemp and Else, geb. Wälchli, died when he was twelve years old.

He briefly attended high school in Bern and the Burgdorf technical center . During the three years that he worked at Hipps Telegraph Factory in Neuchâtel, he attended the technical college for electromechanics in Neuchâtel . After visiting the Paris Electricity Exhibition in 1881, he emigrated to the USA the following year, where he designed manufacturing facilities for Edison for the manufacture of carbon filament lamps .

After he married the Neuchâtel teacher Marie Cusin in 1883/84, he worked briefly with Sigmund Bergmann in New York and from 1884 on with the Schuyler Electric Light Company in Hartford (Connecticut) . After this was transferred to the Thomson-Houston Electric Company in 1887 , he became an employee of Elihu Thomson , for whom he built welding power sources. He became head of the Electric Welding Company founded by Thomson in Lynn, Massachusetts in 1889 . After being sold to General Electric six years later , he became Thomson's research assistant and looked for new ways to earn a living during the economic downturn. The compressor refrigerators did not sell because the networks were too weak. There were also no buyers for battery cars .

His annealing welding process for drilling holes in armor plates for warships was used by the American and English navies.

With X-ray films, long exposure times were required for high-contrast images. With the double-acting mechanical rectifier selector he developed , the radiation intensity increased so much that the X-ray tubes melted - until 1913 Tungsram electrodes were used.

At a meeting with Rudolf Diesel in the USA in 1910, he informed him about the traction problems with diesel locomotives and that they cannot develop tractive power from a standing start. Lemp developed an automatic power control for electrical transmission, which he applied for a patent in 1914.

From 1923 he worked as a consultant on the construction of diesel-electric locomotives with Lemp controls at Erie Steam Shovel and the Ingersoll Rand Company. He had to give up this in the 1940s due to eye problems and moved to live with his daughter in Ridgewood.

Recognitions

swell

Individual evidence

  1. ↑ Patent US1154785 : Controlling mechanism for internal combustion engines. Registered April 8, 1914 , published September 28, 1915 , Applicant: General Electric, Inventor: Hermann Lemp. ‌
personal data
SURNAME Lemp, Heinrich Joseph Hermann
ALTERNATIVE NAMES Lemp, Hermann
BRIEF DESCRIPTION Swiss electrical engineer
DATE OF BIRTH August 8, 1862
PLACE OF BIRTH Bern , Switzerland
DATE OF DEATH March 31, 1954
Place of death Ridgewood , New York , USA