[D9818-F] (D-98-18) Expanding Pulley

Document File Series -- 1898

Title
[D9818-F] (D-98-18) Expanding Pulley
Description

This folder contains correspondence and other documents regarding the technical and commercial development of an expanding pulley for variable-speed gears in motor cars. Most of the letters are by Charles M. Johnson, co-inventor of the pulley, and pertain to the patenting and marketing of the invention.

All of the documents have been selected.

URL
https://edisondigital.rutgers.edu/folder/D9818-F
Identifier
D9818-F
Type
Document File
Rights
Courtesy of Thomas Edison National Historical Park.
Is Part Of
Document File Series -- 1898
Alternative Title
(D-98-18) Expanding Pulley
Has Version
Archive.org Viewer, Microfilm Series Reel 137

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