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Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.
Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.

Vintage Underwood Sunstrand 10140P Adding Machine Later 1940’s Model *Read Desc.

$ 31.65

Availability: 79 in stock
  • Maker: Underwood / Sunstrand

    Description

    Vintage Underwood Sunstrand 10140P Adding Machine 1940’s Model. This has not been fully tested, but turns on and seems like it would be in normal or close close working order. I don’t have the paper to test more fully. This has a few areas missing paint and minor wear as shown in photos. I bought this from a local store that had went out of business that was a repair and retail store for antique business equipment for over 30 years. It was in my own collection for a few years and now I am just trying to downsize my own collection. Dimensions are shown in photos, and this weighs 36 pounds. ************************************************************************************************************£***********************Ships only lower 48 States***********************************
    The Undersood Sundstrand 10140P is one of many similar variants of the original ten-key adding machine invented by David Sundstrand in 1911. The Sundstrand adding machine is noteworthy as the first calculator to use a conventional ten-key entry method. Prior to the Sundstrand, all contemporary adding machines used a Comptometer-style full keyboard, with a nine-key column for each digit. A full keyboard is much faster for entry, as an entire number of any digit length can be entered in a single two-handed stroke. The ten-key keypad is much more user-friendly however, as it can be operated with a single hand, and does not require special training to use effectively.
    In 1927, Sundstrand sold marketing and distribution rights of their machines to Underwood-Elliot Fisher Co, a leading typewriter manufacturer. Machines manufactured from 1927 onward bear the Underwood Sundstrand label. Oscar Sundstrand, David's brother and co-founder of the Sundstrand Machine Tool Co., joined Underwood after David's death in 1930, and continued to develop the Sundstrand adding machine until 1949.
    The 10140P is a later motorized variant, with correction and repeat addition functions.