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Coleman Sellers II

From Wikipedia, the free encyclopedia

Coleman Sellers II
Sellers in a 1905 publication
Born(1827-01-28)January 28, 1827
DiedDecember 28, 1907(1907-12-28) (aged 80)
Philadelphia, Pennsylvania, U.S.
Resting placeWest Laurel Hill Cemetery
Bala Cynwyd, Pennsylvania, U.S.
Occupations
  • Engineer
  • educator
  • inventor
Spouse
Cornelia Wells
(m. 1851)
Children4
Parent
RelativesCharles Willson Peale (grandfather)
Signature

Coleman Sellers II (January 28, 1827 – December 28, 1907) was a prominent American engineer, chief engineer of William Sellers & Co., professor of mechanics at the Franklin Institute, professor of engineering practice at Stevens Institute of Technology and inventor. He obtained more than thirty letters-patent for inventions of his own, and served as president of the American Society of Mechanical Engineers from 1886 to 1887.

YouTube Encyclopedic

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Transcription

INTERVIEWER: Hi. Can you tell us your name and what course you are involved with? PROF. COLEMAN: My name is Charles Coleman. I am an assistant professor in the Aerospace Engineering Department at MIT and I teach Systems Engineering and the Unified Engineering course. INTERVIEWER: And can you tell us what is going on today for this Unified Engineering Aerial Competition? PROF. COLEMAN: Today we are running the 2004 Unified Aerial Competition. There are about 14 teams of five students each that are flying their airplanes and demonstrating their systems. INTERVIEWER: How does this relate to the rest of the Unified course? PROF. COLEMAN: Well, the systems problems and labs serve two purposes with Unified Engineering. The first part is the laboratories provide an opportunity for students to experimentally verify some of the theoretical principals they have learned in class. The second aspect of systems problems allows us to implement our conceived designed implement and operate pedagogy. And so we have various, several exercises throughout the semester where students actually design, build and operate small systems. INTERVIEWER: And this is the CDIO component. Can you say more about CDIO? PROF. COLEMAN: Yes. CDIO stands for Conceive, Design, Implement and Operate. It is a pedagogical framework that we have chosen as an overarching framework to teach engineering. And the principle behind this is we sort of want to reduce the gap between what engineers do in real life and what we teach in school. The facts of the matter are most people, once they graduate for practical engineers, spend most of their lives conceiving, designing, building and operating things. So as we teach theoretical principles, basic engineering principles, we want students to be able to apply them in the framework that they would much like in their careers. INTERVIEWER: OK. Can you describe what is going to happen today and what the students have done to prepare for this event? PROF. COLEMAN: Oh, yes, that would be a lot of fun. I have assigned the students to design a system. And I teach a simple decomposition of systems. It is not the only one. And I teach students that systems are composed of people, products and procedures that have to operate together to deliver value. And you can sort of think of value as going in the opposite direction of money. Systems are fairly general. This breakdown works anywhere for Disney World, people, product and process, lawyering, and even to things like the military. In particular, today they have about a set of four functional requirements, build a plane, train a pilot and a crew, and the task is to fly two empty laps, land the plane, load it with anywhere between one or four eggs, and then fly as long as they can with their payload. And then they also have to minimize the amount of time that they spend on the ground loading the eggs. So that is what is going to go on today. We are going to see how the students perform based on their estimates. INTERVIEWER: And how long have the students prepared for this? PROF. COLEMAN: Oh, the students have been working for approximately nine weeks for about four hours per week with five people per team and with training from us and various materials and supplies. INTERVIEWER: Any predictions about how it is going to go? Are we going to see a lot of spilled eggs do you think? PROF. COLEMAN: I hope we don't see a lot of spilled eggs. One of the learning objectives of the course for me is for every student, every group to have a successful systems building experience. So a broken egg is not necessarily a bad thing. You learn how to build systems by building systems. And I think a unique aspect about this part of the course is that you can actually learn a lot from your failures. INTERVIEWER: So, in other words, you cannot learn to build aircraft without breaking some eggs. PROF. COLEMAN: True. That is true. INTERVIEWER: OK. Well, thanks for your time and thanks for sharing your materials with OpenCourseWare. PROF. COLEMAN: Yup. Thank you.

Biography

Early life

Sellers was born in Upper Darby Township, Pennsylvania,[1] as the youngest son of Coleman and Sophonisba (Peale) Sellers and a direct descendant of Samuel Sellers, who in 1682 received one of the first grants of land in Pennsylvania. His father and a number of paternal ancestors had been engineers; his maternal grandfather was Charles Willson Peale. He was educated at common schools and studied for five years with Anthony Bolmar at his academy in West Chester, Pennsylvania.

Early career

In 1846, Sellers became draughtsman in the Globe Rolling Mill in Cincinnati, Ohio,[2] which was operated by his two older brothers, Charles and George Escol Sellers. Here his mechanical ingenuity quickly asserted itself and under his direction the wire mill belonging to the plant was rebuilt and improved. He remained there for three years,[2] serving part of the time as superintendent. Because of his prompt and thorough investigation of scientific discoveries, he became the mentor of a group of intellectual men in Cincinnati and frequently gave lectures, illustrated by practical experiments, on chemistry, physics, and electricity. In 1850-1851, he undertook the design and construction of locomotives for the Panama Railroad and upon the completion of this contract, took charge of the locomotive works of James and Jonathan Niles in Cincinnati. He served for five years as foreman in the works of Niles and Company.

In 1856, Sellers moved to Philadelphia, where he joined the staff of William Sellers & Co. (the senior partner of which was his second cousin, William Sellers), makers of machinists' tools, and general millwrights; after some years as the superintendent of the drawing office, he became chief engineer.[2] In this capacity he obtained patents for a variety of inventions, some of which are listed below. In 1873, he became a partner of the firm. In 1872, Sellers was elected as a member to the American Philosophical Society.[3]

Failing health led Sellers to resign his position as chief engineer of William Sellers & Co. in 1886, but he subsequently continued to engage in active practice as a consulting engineer.[2] Probably his greatest work in this capacity was in connection with the hydroelectric power development of Niagara Falls. Sellers was a consulting engineer of the Cataract Construction Company, a corporation formed to execute the Niagara Falls project, and served on the International Niagara Commission, which determined the types of turbines and generators and the methods of power transmission finally adopted. Sellers designed the first large dynamos installed in the Niagara Falls power plant.

Further career

From the time of his return to Philadelphia in 1856, Sellers was closely identified with the Franklin Institute, of which he served as vice president for several years and as president for five consecutive terms from 1870 to 1875. He was appointed professor of mechanics at the Institute in 1881. He contributed much to the interest of the Institute's meetings by his lectures, always drawing large audiences.

In 1888, Sellers was appointed professor of engineering practice at Stevens Institute of Technology, Hoboken, New Jersey, where he delivered lectures at intervals during the school year. The Institute conferred upon him the degree of doctor of engineering the same year of his appointment to the faculty.

Sellers was a member of engineering and scientific societies both in the United States and in Europe, and was a charter member and served as president of the American Society of Mechanical Engineers.

In 1877, Sellers was decorated by King Oscar II of Sweden and Norway with the Order of St. Olav, in honor of his scientific attainments.[4]

Personal

Sellers married Cornelia Wells (1831–1909), October 8, 1851. They had four children: Coleman Jr. (1852–1922), Jessie (1855–1932), Horace Wells (1857–1933), and Harold (1875–1876). Jessie married Sabin Colton, a prominent investor in Philadelphia and New York.

Coleman Sellers II died December 28, 1907, in Philadelphia and is interred at West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania.

Inventions

Sellers obtained more than thirty letters-patent for inventions of his own, one of the first of which, a coupling device for shafting (1857),[5] is the essential factor in the modern system of interchangeable shafting parts. In 1861, he patented the Kinematoscope (United States Patent 31357), a protean development in the history of film.

His invention in 1866 of feed-disks for lathes or other machine tools was the first practical solution of the problem of the infinite gradation of feeds. His other patents relate chiefly to improved forms of tools or modifications of existing machines. The use of absorbent cotton for surgical operations was recommended by him as early as 1861, and he proposed the employment of glycerine in order to keep photographic plates wet.

References

  1. ^ "Coleman Sellers, Powelton Village, and the Gilded Age" (Part I) – PhillyHistory Blog".
  2. ^ a b c d "Coleman Sellers" [obituary]. Minutes of the Proceedings of the Institution of Civil Engineers. Vol. 175. 1909. pp. 326-328. Via ICE Virtual Library. doi:10.1680/imotp.1909.17421. Retrieved 2022-11-26.
  3. ^ "APS Member History". search.amphilsoc.org. Retrieved 2021-04-30.
  4. ^ "Coleman Sellers" [obituary]. Proceedings of the Institution of Mechanical Engineers. 1908. pp. 224-227. Via Grace's Guide to British Industrial History, gracesguide.co.uk (transcription with links to scans of source). Retrieved 2022-11-26.
  5. ^ "US Patent: 17,236".

External links

This page was last edited on 29 December 2023, at 04:55
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