Portable Adders

While all adding machines could be transported, this group consists of a much lighter machine type released in the 1920's. This group of adding machines of the portable design were called "full keyboard" machines (9 number keys in each column, number of columns varied by style). These machines could be electric motor powered or manually 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 product line from the early 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, or for cash register use. These machines had special keyboard capabilities and unique carriage construction. While very common in banks for years, these models are more 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, hand operated)