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Portable Adders While
all adders could be transported, this group consists of a much lighter adder
released in the 1920's. this group of adding machines of the portable design type of full keyboard (9 number
keys in each column, number of columns varied by style). Can be electric or
manual powered by a hand crank. The Class 8, 9, 10, and
Series P were the mainstay of the adding machine business for many years. Burroughs built a tremendous number of configurations over the years, all
designed around the same basis invention of the first “Portable” machine. A significant change in the Burroughs line from the Class 1, 2, and 3
machines with their heavy construction, the Burroughs Portable was the answer to
competition from Victor, American, Barrett, Standard, Universal, Wales, and many
other portable machines of the time. The Class 10 machines were specifically built for receipting applications such as bank teller use. These machines had special keyboard capabilities and unique carriage construction. While very common in banks for years, these models are difficult to locate today. Class
8 -
Full keyboard machines with adding capability only Date Range -- 1925-196x Original Price -- $100 Today’s
Value -- $50-$150
Style 80801 (Class 8 adder, 8 columns, standard carriage)
Early machine (note single
screw below logo) Class
9 -
Full keyboard machines with adding and subtracting capability. Can be electric
or manual. Date Range -- 1926-196x Original Price -- $200 Today’s
Value -- $50-$150
Has small lever to set subtract operation (right lower keyboard)
This later model has a red subtract key
Electric model with black add and subtract keys - look close, right side of keyboard (91053)
Very popular wide carriage model (91053W) Class
10 -
Full keyboard style machines with features for bank teller and receipting
functions Date Range -- 1947-197x Original Price -- $500 Today’s
Value -- $75-$200 |
