Fuller’s computing telegraph [cover title]. … Telegraphic computer, a most wonderful and extraordinary instrument, by which business questions, of every possible variety, are instantly performed… [pasted to inside upper cover].
- Author: FULLER, John Emory.
- Publication place: New York
- Publication date: 1852.
- Physical description: Quarto (283 by 285), letterpress title pasted to inside upper cover and 11 leaves of text, light toning, folding lithographed table, entitled “Analytical table of mechanical movements,” tipped to inside lower cover, original cloth, worn and rebacked, together with a separate double-sided volvelle (283 by 285mm) engraved by George G. Smith, mounted on heavy cardboard, containing “Fuller’s Time Telegraph” on one side and “Palmer’s Computing Scale” on the other, plus a separate broadsheet advertisement and list of subscribers for “Fuller’s Telegraph Computer, for Readily Solving Business Questions. An application of American Genius to a British Principle”
- Inventory reference: 2159
The invocation of telegraphy in the title refers to the notion of instant communication associated with telegraphy, which had recently captured the public imagination. The computer is more properly referred to by the name of its original inventor Aaron Palmer: ‘Palmer’s Computing Scale’ having been patented by him in 1843, and improved and produced in several versions by J.E. Fuller from 1847. This model is printed from the attractive and intricate original Palmer plate, with Fuller’s name and own patent added to the engraving, printed by George C. Smith, 186 Washington St., Boston. The reverse side, ‘Fuller’s time telegraph’, was patented in 1845. The invention was exhibited with some success at the great exhibition at Crystal Palace in 1851, as referred to in the preliminary advertisement.
‘Palmer’s Computing Scale’, essentially an early and ingenious slide-rule, was used to calculate square measures, cubic measures, timber measures, grain measures, liquid measures and interest rates from 3 percent to 10 percent on a daily and monthly basis. The ‘time telegraph’ on the reverse was used to calculate time lapse in days or weeks between any two given dates.