Isidor (Jerry) Tobias Chesler

Isidore (Jerry) Chesler: Was born in 1886. Is mentioned in the book "Pencil" about the pencil industry. He invented the Attrition Mill which uses opposing air streams to blow graphite particles at each other to grind them finer than previously possible. The machine was apparently also used by the Manhattan Project (they borrowed it, and when they returned it, it had been thoroughly cleaned to a sparkling finish). Jerry was a vegetarian, perhaps one of the first in the family. He decided to become a vegetarian after visiting the stockyards "Find A Grave Index," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QVLL-1M38 : 2 July 2020), Isidor Chesler, 1955; Burial, , ; citing record ID , Find a Grave, http://www.findagrave.com.

The New York Herald Tribune New York, New York, USA 22 July 1955 Isidor Chesler, Dies at 69: Did Research with Thomas Edison Point Pleasant, New Jersey, 21 July Isidor Chesler, sixty-nine, director of research for the Eagle Pencil Company, of New York City died today at Point Pleasant Hospital after a short illness. Isidor lived at 2 Peter Cooper Road, New York City, and held a summer home at Mantoloking, New Jersey where he taken ill. Isidor Chesler had been a protégé of the late Thomas A. Edison and was associated with the inventor for several years in a number of research programs and experimental projects.

Between 1910 and 1914 Isidor Chesler worked with Thomas Edison on the latter’s research on electric storage batteries, and in 1917, Isidor Chesler served with the inventor Thomas Edison Navy’s project on the development of electrical devices for detecting enemy submarines and torpedoes.

Isidor Chesler perfected the pencil and was one of the first men to apply scientific research to the improvement of the lead pencil. Isidor Chesler invented and perfected many devices for measuring and improving the smoothness, durability, and flexibility of the pencil and had developed a process for taking the brittleness out of colored leads.

Born in 1886 Slonim, Russia and brought to the United States as a child Isidor Chesler was educated in the New York City public schools and received technical electrical and engineering training at Cooper Union Technical School, in New York.

In 1907 Isidor Chesler became superintendent of the Spiro Company, New York manufactures of electrical and special machinery. In 1909 Isidor Chesler was put in charge of experimental work for the Continental Engineering Company in the development of high pressure pumps for placer mining and mining dredging devices.

After spending four years in Edison Laboratories between 1910 and 1914 Isidor Chesler was loaned to the L. E. Myers Company between 1914 and 1916 and supervised the installation of the mechanical and electrical model of the Panama Canal which was exhibited at the International Panama-Pacific Exposition at San Francisco, California in 1915. Isidor Chesler received a gold medal for his work from the International Jury of Awards.

Isidor Chesler worked on ordinance from 1916 through 1917. Isidor Chesler supervised the loading of shells for the government at the Canadian Can & Foundry Company in Kingsland, New Jersey. Between 1917 and 1919 Isidor Chesler served I the Inspection Division of the Ordnance Department as supervisor of the inspection service at all ammunition loading plants in the United States

Isidor Chesler joined Eagle Pencil Company at 703 East Thirteenth Street, New York City, in June 1920, as director of research, and held this post until death. Isidor Chesler patented 23 patents for pencils and pens, and invented devices for the accurate measurements of the characteristics of leads.

Isidor Chesler was a member of the American Society of Mechanical Engineers, the American Society of Chemical Engineers, the Ceramic Society and the Army Ordnance Association.

Surviving are his wife Mrs. Belle Chesler, a daughter Mrs. Elinor Boyd, a son Norman P. Chesler, four brothers and a sister, and three grandchildren.

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per Howard Chesler: I remember my father, Reuben Chesler, telling me about his cousin Jerry in New Jersey(who worked in the Edison labs) and we went to visit him once just before I enrolled at the Wharton School(Univ of Penn.) where Jerry had been a student. This would have been around 1939.