Dalton Super Model Adding Machine

This ten-key printing manual adding machine has a steel frame painted black and ten white plastic number keys in two rows. Complementary red digits on the number keys are for subtraction. Right of the number keys are non-add and multiply keys. To the left are a tabulating key (used for automatic carriage shifting in double column work), a subtract key,and a back space key. Above the keyboard is a place indicator for up to 13 places. Left of this is a correction bar to clear entries. Total, subtotal, and release keys are mounted above and to the right. One lever that may be set on “HAND” or “MOTOR”, another for split or normal addition.

A silver-colored metal window is above the keyboard, with printing mechanism and non-print key behind. The red and black ribbon moves in front of the 9” carriage. This carriage has a bell on the left side. The paper tape holder and paper tape are behind the carriage. The metal handle is on the right. It has a wooden knob once covered with plastic. Metal clips placed in the back of the carriage set the tab stops. One clip has detached from the carriage. Printing is either single or double-spaced.

The machine is marked on the front: DALTON (/) CINCINNATI, OHIO. (/) U.S.A. It is marked on the carriage: Dalton (/) ADDING, (/) LISTING AND (/) CALCULATING MACHINE. The serial number, on a tag on the right side under the handle, is: 2-102212.

Reference:

J. H. McCarthy, The American Digest of Business Machines, Chicago: American Exchange Service, 1924, pp. 40, 536.

Currently not on view