Tim III Calculating Machine


This rugged manually operated and non-printing stepped drum calculating machine has a brass and iron case painted black. The eight data entry levers are linked to both number dials and brass stepped drums. The number dials record digits entered. Levers in front of the dials zero the entry. An addition & multiplication / subtraction & division lever is on the left, and an operating crank is on the right. The plate at the front is easily removed to show the levers and a bell.

In back of the levers is the carriage, with nine revolution register dials and 16 result register dials. The zeroing bars for these registers are on the right of the carriage. A knob for lifting the carriage is on its far left. The entry levers, the revolution register, and the result register have sliding decimal markers. A bell rings to indicate overdivision. The entire machine has a steel cover painted black.

The machine is stamped on the front: Ludwig Spitz & Co. (/) TIM (/) TIME IS MONEY (/) TRADE MARK, and: THE OSKAR MULLER Co., New-York. A mark on the right side of the machine under the carriage reads: 05187. A mark on the left side, also under the carriage, reads: 3684. Left of the setting levers, the machine is marked: BREVET. A metal disc attached to the front cover reads: OSCAR MÜLLER & Co. (/) Sole Agents (/) for (/) U.S. & Canada (/) NEW YORK.

This object was a gift of the Brooklyn, New York, engineer Harold G. Wening.

Date Made: ca 1912

Maker: Ludwig Spitz & Co.

Location: Currently not on view

Place Made: Germany: Berlin, Berlin

Subject: Mathematics

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


Exhibition Location:

Credit Line: Gift of Harold G. Wenig, P.E.

Data Source: National Museum of American History

Id Number: MA.328127Catalog Number: 328127Accession Number: 270026Maker Number: 05187; 3684

Object Name: calculating machine

Physical Description: steel (overall material)brass (overall material)german silver (overall material)rubber (overall material)iron (overall material)Measurements: overall: 19.5 cm x 56 cm x 16 cm; 7 11/16 in x 22 1/16 in x 6 5/16 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-21d6-704b-e053-15f76fa0b4fa

Record Id: nmah_690670

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