R.C. Allen Calculator, Adding Machine and Cash Register Years of Manufacture by Serial Number! R. C. Allen Adding Machines Manufacture Dates by January 1 Serial Number: Serial # Year Remarks Ref. 825000 & 952000 1937 Formerly Add-Index, Series changed to R.C. Allen at Serial # 825000 1 848000 & 962000 1938 1 856000 & […]
Category: Calculators and Suchlike
1952 – Underwood-Sundstrand New Model E Accounting Machine Dealer’s Sales Packet
Next in the Underwood mechanical calculator’s documentation dump, from 1952 – The Underwood-Sundstrand New Model E Accounting Machine Dealer’s Sales Packet. (Right-click and select “view image” to embiggify)
1951 – Instructions for Operating the Underwood Sundstrand Automatic Printing Calculator
1951 – Instructions for Operating the Underwood Sundstrand Automatic Printing Calculator Operating Principles of calculating and printing the elements and results of calculations involving addition, subtraction, multiplication, division and general business figure problems. Enjoy! (:
Sundstrand-Underwood Adding and Accounting Machines Dates of Manufacture by Serial Number, and Features and Keyboards Reference
Well, I’ve been making noise about working on adding machine stuff, seeing as I’ve been getting crates of Parts, Service and other dealer documentation on the things lately. This last batch of donated NOMDA Blue Books and an Underwood, Sundstrand and Elliot-Fisher Line Book have given me enough information to finally put together good Age […]
Burroughs Adding Machine Age List, Full-Keyboard and 10-Key, 1908-1960
For Joe, and all you Burroughs Adding Machine fans. (:
Victor Adding Machine Age List – WOMDA 1973
For Victor Adding Machine freeks, the Victor Serial Number Age List from the Western Office Machine Dealer’s Association 1973 Line Book. Enjoy!
Mechanical Calculator: 1963 Underwood-Olivetti Summa Prima 20
Couldn’t resist this one when I saw it on the shelf at Deseret for $3 a few weeks ago, so I snatched it up. The thing was *filthy*, but seemed to be intact, although it was so gummed up that the lever wouldn’t pull. I’ve currently got it working now, but it still needs another […]
Paymaster Series 8000 Ribbon Writer
Ok, I admit it. I finally met the Checkwriter I couldn’t resist. As a thrift-huntin’ typewriter collector, I occasionally see a Paymaster Checkwriter sitting in the same general area that typewriters are stashed. Although always intrigued and tempted by these neat very mono-purpose printing machines, I’ve always held back on buying one (and you do […]
Slide Rule of the Week: Pickett Model N1010-ES Trig
Slide Rules
I have a habit of pulling wire-bound books out of the shelves of thrift stores to take a peek at the covers. Usually they’re cookbooks, but I’m on the hunt for a book called “Rocky’s Typewriter Repair Manual” by Clarence LeRoy Jones, which I’ve never seen a copy of, but I expect it’ll be wire-bound. […]
Paper Calculators: The Lightning Calculator, 1932 and the Color Helm, 1940
I loves me some paper calculators, yessir. My first one I remember was a simple slider that did multiplication and came out of a box of cereal in 1970-something. The idea of a computer constructed out of paper fascinated me immediately, and I wore that cereal box calculator to shreds as a kid. Later in […]