This notebook covers the period February-July 1881. The entries are by Charles L. Clarke and relate to dynamos. Included are notes, calculations, and drawings of the Porter-Allen central station dynamos, the South American portable dynamo, sizes E, F, and C dynamos, a steamboat dynamo, and a flywheel for an Armington-Sims steam engine dynamo. Thirteen loose pages found in the book contain additional notes, drawings, and calculations. The label on the front cover is marked "C. L. Clarke" and "Magnets." The book contains 278 numbered pages.
Blank pages: 72-99, 104-109, 224-253, 268-269, 278.
[N214001], Technical Note, Charles Lorenzo Clarke, February 20th, 1881 1881-02-20
[N214017], Technical Note, Charles Lorenzo Clarke, February 21st, 1881 1881-02-21
[N214049], Technical Note, Charles Lorenzo Clarke, February 28th, 1881 1881-02-28
[N214111], Technical Note, Charles Lorenzo Clarke, March 29th, 1881 1881-03-29
[N214121], Technical Note, Charles Lorenzo Clarke, March 30th, 1881 1881-03-30
[N214145] Technical Note, March 1881 1881-03-00
[N214215], Technical Note, Charles Lorenzo Clarke, July 18th, 1881 1881-07-18
[N214255] Technical Note, July 1881 1881-07-00
[N214261], Technical Note, Charles Lorenzo Clarke, March 18th, 1881 1881-03-18
[N214271], Technical Note, Charles Lorenzo Clarke, May 3rd, 1881 1881-05-03
[N214278A] Technical Note, c. 1881 1881-00-00