Serrated edge

Knife with serrated edge

A serrated edge is a sharpening of knife blades with saw teeth.

On January 31, 1930, William Grant from Sheffield , England, in Germany, an invention for knives, especially for cutting tomatoes, fruit and the like at the Imperial Patent Office patent. According to this patent , indentations were made on both sides of the blade alternately on the right and left, which should prevent clippings from sticking to the almost flat surface of the blade and thereby improve the ability to cut.

literature

Franz Philipp: Household goods and hardware knowledge. Volume 1, R. Müller, 1962, page 145

Individual evidence

↑ Patent DE509838 : Knife, especially for cutting tomatoes, fruits, etc. The like. Applied January 31, 1930 , published October 17, 1930 , Applicant: William Grant. ‌

[1] Patent DE509838 : Knife, especially for cutting tomatoes, fruits, etc. The like. Applied January 31, 1930 , published October 17, 1930 , Applicant: William Grant. ‌