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Updated: July 25, 2023 by Heather | Leave a Comment
Brainard Smith was an American inventor and engineer from Sacramento. He is best known for the creation of several key […]
Who Was Dr. Walter Snelling? Born on December 13, 1880, Dr. Walter Snelling was a chemist and significant contributor to the […]
Jacob Schnarrenberger Jacob H. Schnarrenberger of Springfield and Greenfield, Ohio, was a holder of quite a few (at least 7) US […]
A portrait of James Ritty James Ritty In 1878 one James Ritty (see biography of James Ritty), a 42 years old saloon […]
Updated: April 16, 2024 by History Computer Staff | Leave a Comment
Who was Reuben Rodney James? Reuben Rodney James worked as a farmer and in a woolen mill. He also invented an […]
History of Computers and Computing, Calculating tools, Gadgets, Martial Roussel Martial Roussel On 3 October, 1853, Martial Roussel, a member of the […]
Updated: July 21, 2023 by Heather | Leave a Comment
William Robjohn was an organ builder in the early 19th century.©History-Computer.com The early work of John Henry and Caleb Sherwood Odell […]
A Portrait of Harry Humfrey Rumble Harry Humfrey Rumble On 15 September, 1890, the young architect and civil engineer Harry Humfrey Rumble […]
Fawcett Plumb On 17 June 1881, Fawcett Plumb (1834-1919), a businessman, politician, and prolific inventor from Streator, Illinois, (see the biography […]
Who Were Moses and William Pullen? Moses and William Pullen are known for their invention of the Bentham Calculating Machine. The […]
Updated: July 25, 2023 by Austin S. | Leave a Comment
William Pratt was a mathematician and a member of the active circle of London’s Mathematical teachers. William Pratt invented a […]
Updated: July 25, 2023 by Rebecca Bales | Leave a Comment
With at least 33 patents in the U.S. alone, William Prehn Quentell was responsible for many inventions and is one […]
Who Was John Pfeifer? John Pfeifer was a bookkeeper and a remarkable inventor with over 60 patents to his name. Inventions […]
Updated: July 25, 2023 by Lisha Pace | Leave a Comment
Nystrom’s Calculator In late 1840s the young swedish immigrant , John William Nystrom, who lived in Philadelphia, invented a calculating device, […]
Updated: April 19, 2024 by History Computer Staff | Leave a Comment
History of Computers and Computing, Calculating tools, Gadgets, David Nelson David Nelson In April of 1860, David R. Nelson of Jackson, Ohio, […]
Updated: December 6, 2022 by Lisha Pace | Leave a Comment
Who was Alexis Petetin? Alexis Petetin was a notable inventor in France in the 1800s. He is best known for attaining […]
Who Was Amos Mendenhall? Amos Mendenhall was an American inventor that was recognized for attaining five US patents. He left a […]
History of Computers and Computing, Calculating tools, Gadgets, Francis Marston The Apparatus for Making Calculations of Francis Marston In 1842 a certain […]
Who Was William Macnider? In 1884, John Macnider of Greensborough, Georgia, applied for a patent for a keyboard adding machine. Unfortunately, […]
Who was James Alvan Macualey? Wheeling, West Virginia, was the place of James Alvan Macauley’s birth on June 19, 1872. James […]
Updated: July 25, 2023 by Abby | Leave a Comment
Max Mayer In 1881 the German inventor Max Mayer from Munich devised an adding machine, which was patented in 1884 (German […]
Who was Peter Lindholm? Peter Trulson Lindholm was born on April 4th, 1850, in Ysone, Blekinge, Sweden. Lindholm emigrated to the […]
: Gutavus Linderoos is noteworthy for holding a patent for an early adding machine which is housed at the National […]
Who Was Melvin Lovell? Born in Pennsylvania in August 1844, Melvin Lovell was a successful businessman and woodenware manufacturer who also […]