*1) The Rheinmetall machines have a remarkable weight saving technology. Stead of having each digit serving its own stepped drum, these machines need half of the stepped drums. Their stepped drums, located in the middle under two digits / keyboard strips, serving those two simultaneously.
more details: http://www.rechnerlexikon.de/artikel/Rheinmetall_Technik
| Type name / number: | KES I (I'm not sure) Electromotor driven |
| Production / SN: | 69761 |
| Calculating principle: | Stepped-drum or Leibniz Wheel (UK) ; Staffelwalze (DL) *1) |
| Calculating functions: | Add, Subtract, Multiply, Divide |
| Input accuracy | 8 digits, Full keyboard |
| Calculating accuracy: | 12 digits |
| Extra's: | |
| Designer: | |
| Production year: | |
| Case material: | metal |
| Weight: | 13.9 Kg |
| External links: | |
| Previous owner: | Matthias Müller, Bad Krozingen, Germany |
| Cosmetic imperfections: (I accuse no one): |
Two keys number five as missing / defect |
| Date of receiving: | 2010 - july (e-bay), |
| Machine story: | The motor was defect and the machine was locked on arrival. The top removed and loosen the gears (zero setting was blocked). The motor carbon brushes were stuck in their holders. After strip down the motor and cleaned the brush holder from old brushes rests, new brushes assembled (got those from a spare motor). The motor was working properly but the calculation was not working correctly. All the keyboard strips removed and cleaned and oiled. The gears oiled. After this the machine was working properly. |