#Burroughs portable adding machine serial number free
There is free shipping anywhere in the USA and an additional charge of $85 for S&H&I overseas via US Priority International Mail. Shortly thereafter, computer processing was added and that department was reduced to something less than 10 of that original 50 work force necessary to manually calculate a weekly payroll. All day long their fingers would fly over the Comptometer keys. The Payroll Department was next to my area and I recall about 50 women working comptometers to compute a 5,000 man, factory, piece work, weekly payroll. My first post college job was working in the Accounting Department for Sunbeam Corporation in Chicago. The operators who used them were often also called "Comptometers" and the modern term "Comptroller" is a derivative from the name of this very popular adding machine. It was manufactured from the late 1880s into the 1960s. The Comptometer was probably the most popular adding machine ever made in the United States. It comes with a copy of the original 1887 patent along with copies of the patent drawings. It is missing one of the small slide levers above the number one. This one is in excellent condition and is fully functional.
Later models had very distinctive copper cases. It is easily recognized as a Model One by the beautiful dovetailed wooden case. It was manufactured in Chicago by the Felt & Tarrant Manufacturing Company sometime around 1888. This is the first model Comptometer Adding Machine (serial # 1991) and it has patent dates listed: July 19 & October 11, 1887.
Both the machine and the case have an estimated condition rating of 2+, 2. This machine comes with its original tin case and the case is prlobably more rare than the machine. The last listed patent date on this Comptometer is 1914 and that is most likely, or very close to, the year it was manufactured. The more modern term for the chief accountant, Controller, is also an evolution from Comptometer. The people who operated them (usually women) were also called comptometers and the modern term for the person in charge of an accounting department, Comptroller, is the evolution of the name comptometer (operators titles). The first one (model one) was made with an all wooden case (see the model one in our collection) and came out in 1887 and the last one was made with an cast aluminum case sometime in the early 1960s. The Comptometer was probably the most important adding machine or calculator ever made. While there are some very rare listing (printing) models, the ones most often found do not have printing capability as is the case with this particular one. Almost all Comptometers are in copper patena or polished copper housings. This is a very unusual model in black paint and gold decorations. Comptometers were made by the Felt & Tarrant Manufacturing Company of Chicago, Illinois and the initial patent holder was Dorr E.
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