Adding Machine Was Patented in 1888 by W. S. Burroughs Events Aug 212021 Adding Machine Patent Illustration Adding machine was patented in 1888 by W. S. Burroughs. He received patent number 388,116. Children could view his patent at: Adding Machine. Leave a Reply Cancel reply Your Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Name (required) E-mail (required) URI Notify me of follow-up comments by email. Notify me of new posts by email.