richy plus

I used to program these in 1970.
The 513 has a meaning
5=With Typewriter
1=Memory
3=number of Registers for calculations ie, 3 (this was the maximum).
The lever on the left, with numbers I,II,III,IV selects one of 4 separate programs. eg, I might be a Legder Application, while IV might be a Payroll Application. These machines could only ADD/SUBTRACT.
The machine was totally mechanical controlled by the Program "Bar" ata the rear of the unit. The Program Bar was a series of different length lugs at different heights which triggered the movement of the platen and what calculations or actions to take place - eg, A Date could be printed on a ledger card by selecting teh DT function in one of the Stops. There were 68 stops that could be used to create your program and when building an application bar with 4 different applications oftemn you spent hours and hours trying to save 1 stop so your program could fit. My co-programmer was John Almanzi and many a bet was made that we would find that elusive spare stop.
A quite noisy machine that clanked away and had to be moving its carriage for things to be calculated, printed etc
I was working for Olvetti in Castlereagh Street, Sydney at the time.
This machine was later replaced by the Olvetti P203, Olivetti P603
It also had a smaller brother called the 412 or 413 where the 4 meant it had no typewriter.
Salesmen at Olivetti at this time may recall the "Beastly System" which was a marketing design by Tom Kornhaber to promote these mechanical machines from 1970 to about 1972