Search
- Friden Electro-Mechanical Calculator, Model STW, 1949-1966 - Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- 1949-1966
- Collections - Artifact
Friden Electro-Mechanical Calculator, Model STW, 1949-1966
Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- Adix Adding Machine, 1903-1930 - The Adix adding machine provided fast, accurate calculations for single-column sums. Josef Pallweber patented the machine in 1903, and in 1904, the newly formed Adix Company began production of this small, convenient device with its exposed system of gears. Adix adding machines would remain in production for the next 26 years.
- 1903-1930
- Collections - Artifact
Adix Adding Machine, 1903-1930
The Adix adding machine provided fast, accurate calculations for single-column sums. Josef Pallweber patented the machine in 1903, and in 1904, the newly formed Adix Company began production of this small, convenient device with its exposed system of gears. Adix adding machines would remain in production for the next 26 years.
- Burroughs Class I / Model 9 Adding Machine, 1910 - Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- 1910
- Collections - Artifact
Burroughs Class I / Model 9 Adding Machine, 1910
Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- Burroughs Calculating Machine, 1925-1935 - Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- 1925-1935
- Collections - Artifact
Burroughs Calculating Machine, 1925-1935
Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- Underwood Sundstrand Adding Machine, circa 1946 - Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- circa 1946
- Collections - Artifact
Underwood Sundstrand Adding Machine, circa 1946
Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- Trade Card for Sundstrand Adding and Calculating Machine, Sundstrand Adding Machine Co., circa 1920 - Writing with a quill, metal nib or fountain pen could be messy. Ink could smear or smudge with the slightest touch. In America by the late 1800s absorbent paper blotters became the preferred method to soak up wet ink. Companies produced small inexpensive blotters as advertisements and giveaways well into the twentieth century.
- circa 1920
- Collections - Artifact
Trade Card for Sundstrand Adding and Calculating Machine, Sundstrand Adding Machine Co., circa 1920
Writing with a quill, metal nib or fountain pen could be messy. Ink could smear or smudge with the slightest touch. In America by the late 1800s absorbent paper blotters became the preferred method to soak up wet ink. Companies produced small inexpensive blotters as advertisements and giveaways well into the twentieth century.
- Marchant Calculating Machine, circa 1935 - Mechanical adding machines were indispensable--and almost indestructible--office equipment used before the computer era. Marchant was the first American firm to specialize in calculators, which could perform at least the basic mathematical functions of addition, subtraction, multiplication and division; an improvement over two-function adding machines. Founded in 1911, Marchant was absorbed by Smith-Corona Co. in 1958.
- circa 1935
- Collections - Artifact
Marchant Calculating Machine, circa 1935
Mechanical adding machines were indispensable--and almost indestructible--office equipment used before the computer era. Marchant was the first American firm to specialize in calculators, which could perform at least the basic mathematical functions of addition, subtraction, multiplication and division; an improvement over two-function adding machines. Founded in 1911, Marchant was absorbed by Smith-Corona Co. in 1958.
- American Arithmometer Company "Bankers and Merchants Registering Accountant," Adding Machine, circa 1890 -
- circa 1890
- Collections - Artifact
American Arithmometer Company "Bankers and Merchants Registering Accountant," Adding Machine, circa 1890
- Marchant Calculating Machine, Model 8D-X, 1950-1955 - Mechanical adding machines were indispensable--and almost indestructible--office equipment used before the computer era. Marchant was the first American firm to specialize in calculators, which could perform at least the basic mathematical functions of addition, subtraction, multiplication and division; an improvement over two-function adding machines. Founded in 1911, Marchant was absorbed by Smith-Corona Co. in 1958.
- 1950-1955
- Collections - Artifact
Marchant Calculating Machine, Model 8D-X, 1950-1955
Mechanical adding machines were indispensable--and almost indestructible--office equipment used before the computer era. Marchant was the first American firm to specialize in calculators, which could perform at least the basic mathematical functions of addition, subtraction, multiplication and division; an improvement over two-function adding machines. Founded in 1911, Marchant was absorbed by Smith-Corona Co. in 1958.
- "Millionaire" Calculating Machine, Used at Marland Mills, Andover, Massachusetts -
- 1900-1905
- Collections - Artifact
"Millionaire" Calculating Machine, Used at Marland Mills, Andover, Massachusetts