Webb Adder

Description:

This two-wheeled stylus-operated non-printing adding machine is in a wooden frame. The large brass wheel has a ring of holes and the numbers 00 to 99 stamped around the edge. The numbers 0 to 99 also are stamped around the window for the larger wheel. Numbers are added by rotation of the wheels. Answers are recorded on a pedometer-like dial that has separate windows for ones, tens, hundreds, and thousands. The frame is screwed to the cover plate. There is a stylus. The large wheel is marked: C.H.WEBB. N.Y. It is also marked: “THE ADDER" PATD MARCH 10TH 1868. The back has the serial number: C1053. The dial is a modification of the instrument. It is marked on paper attached over the small wheel: N.Y.STANDARD WATCH COMPANY.

Charles Henry Webb (1834-1905) was a journalist, playwright, poet, and roamer. He patented a second version of this device in 1889. This example was owned by the Draper family of New York.

References:

C. H. Webb, “Improvement in Adding Machines,” U.S. Patent 75322, March 10, 1868.

“Machine for Addition,” Journal of the Franklin Institute, 60 (1870): pp. 8-9.

P. A. Kidwell, “The Webb Adder,” Rittenhouse, 1 (1986), pp. 12-18.

E. Martin, The Calculating Machines (Die Rechenmaschinen), trans. P. A. Kidwell and M. R. Williams, Cambridge: MIT Press, 1992, p. 63.

Date Made: 1868-1889

Patentee: Webb, Charles H.Maker: Webb, Charles H.

Location: Currently not on view

Place Made: United States: New York, New York CityPlace Patented: United States: New York, New York City

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Adding Machines, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of John William Christopher Draper and James Christopher Draper

Data Source: National Museum of American History

Id Number: MA.335359Accession Number: 304826Catalog Number: 335359

Object Name: adding machine

Physical Description: glass (overall material)brass (overall material)brass, nickel-plated (overall material)paper (overall material)wood (overall material)Measurements: overall: 2.5 cm x 17.3 cm x 12.2 cm; 31/32 in x 6 13/16 in x 4 13/16 in

Guid: http://n2t.net/ark:/65665/ng49ca746a4-f603-704b-e053-15f76fa0b4fa

Record Id: nmah_690287

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