Martin (Dtsch), page 379 - 380 & 389
"In both size and shape, this machine closely resembles the Scribola, illustrated in figure 286 (32 X 9 X 7 cm, 2.5 kg), but instead of a chain drive it has ten adding keys. It prints both individual items and totals on 58-mm wide paper. There is a lever, attached on the right, that is used to add and print the items that have been entered. The totals are printed when the left lever is moved-it is not necessary to enter them again. It has a single-color ribbon.
Capacity: eleven-place setup mechanism, twelve-place result mechanism.
The price of the machine is 400 marks. Manufacturer: Amigo Addiermaschinen Gesellschaft, 11 Müillerstrasse, Stuttgart-Gaisburg."
| principle | chain adder |
|
|
| capacity | 11 (w/o cr) x x 12 |
||
| input | 10 keyboard | ||
| prod. years | 1925 - ca. 1928 | ||
| mach. built | few | ||
| features |
1 species, printing |
||
| dimensions | 11 x 36 x 10 cm | ||
| weight | 4 kg | ||
| known s/n | 157 - 377 | ||
| for bigger and more pictures, click on the picture |
source: R.Meier
Martin (Dtsch), page 380
"This is a miniature pinwheel machine with continuous tens-carry in the revolution counter. The shift from addition to subtraction occurs automatically when the crank is turned in the opposite direction. Manufacturer: Mercedes Bureaumaschinenwerke, Charlottenburg 2, Berliner Strasse 153."
Melitta machines were manufactured by the Mercedes Büromaschinen-Werke, Zella-Mehlis, from 1924 on.
In 1926/27 production was turned over to the Walther Werke, also Zella-Mehlis. Identical machines were sold as Melitta and Walther by both companies.
Melitta machines were also marketed by other companies under their brand, like Stolzenberg.
After World-War II, Melitta models were manufactured and sold independent from Walther (see below).
Literature and links:
Reese,M.: Neue Blicke auf alte Maschinen (2002) , pages 87 ff. (IFHB)
| principle | pinwheel |
|
|
| capacity | 9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | 1924 | ||
| mach. built | |||
| features |
spring-loaded carriage |
||
| dimensions | |||
| weight | |||
| known s/n | 157 | ||
| for bigger and more pictures, click on the picture |
source: D.Bölter
restoration of an experimental model
Literature and links:
D.Bölter: Melitta T & documentation
Museum in der Beschußanstalt Zella-Mehlis
| principle | pinwheel |
|
|
| capacity | 9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | full keyboard | ||
| prod. years | 1924 | ||
| mach. built | 1 | ||
| features | |||
| dimensions | |||
| weight | |||
| known s/n | 12 | ||
| for bigger and more pictures, click on the picture |
source: D.Bölter
| principle | pinwheel |
|
|
| capacity | 9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | 1925 - ? | ||
| mach. built | |||
| features |
spring-loaded carriage identical to Walther 1 |
||
| dimensions | 29 x 13 x 10 cm | ||
| weight | 4.5 kg | ||
| known s/n | 1.315, 1.497, 2.432, 2.703 | ||
| for bigger and more pictures, click on the picture |
source: D.Bölter
| principle | pinwheel |
|
|
| capacity | 6 x 5 x 10 |
||
| input | cursors, rotating | ||
| production years | ca. 1933 - 1938 | ||
| machines built | |||
| features | |||
| identical to Walther RK | |||
| known s/n | 11.661 | ||
| for bigger and more pictures, click on the picture |
source: S.Wolff
| principle | pinwheel |
|
|
| capacity | 10 x 8 x 13 |
||
| input | cursors, rotating | ||
| production years | ca. 1929 - 1938 | ||
| machines built | |||
| features | |||
| identical to Walther RMK | |||
| known s/n | 50.383 | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
manufacturer: Fortuna Werk, Suhl/Thüringen, DDR
| principle | pinwheel |
|
|
| capacity | 10 (w cr) x 8 (w tc) x 16 |
||
| input | cursors, rotating | ||
| prod. years | ca. 1950 | ||
| mach. built | |||
| features |
spring-loaded carriage |
||
| dimensions | 30 x 12 x 13 cm | ||
| weight | 4 kg | ||
| known s/n | 70,882 , 73,601 | ||
| for bigger and more pictures, click on the picture |
source: R.Fedeli
manufacturer: VEB Ernst Thälmann Werk, Suhl/Thüringen, DDR
| principle | pinwheel |
|
|
| capacity | 10 (w cr) x 8 (w tc) x 16 |
||
| input | cursors, non-rotating | ||
| prod. years | ca. 1955 - 1960 | ||
| mach. built | |||
| features |
spring-loaded carriage |
||
| dimensions | 33 x 14 x 16 cm | ||
| weight | 4.5 kg | ||
| known s/n | 126 050, 126 789 | ||
| for bigger and more pictures, click on the picture |
source: H.Schneemann
manufacturer: VEB Fortuna Werk, Suhl/Thüringen, DDR
| principle | pinwheel |
|
|
| capacity |
10 x 8 x 16 |
||
| input | cursors, non-rotating | ||
| production years | ca. 1955 - 1960 | ||
| machines built | |||
| features | spring-loaded carriage | ||
| back transfer | |||
| known s/n | 92.429 | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
| principle | pinwheel |
|
|
| capacity |
6 x 6 x 10 |
||
| input | cursors | ||
| production years | |||
| machines built | |||
| features | |||
| known s/n | |||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
Martin (Dtsch), page 385
"Addac was a 8 digit adding- and subtraction-machine, manufactured by Addac Co., Grand Rapids, MI"
| principle | tooth segments |
|
|
| capacity | 8 and 9 | ||
| input | finger pads | ||
| production years | 1925 - 1927 | ||
| machines built | ???? | ||
| features | subtraction by complementary | ||
| digits | |||
| known s/n | 1.369, 3.133, 5.736 | ||
| for bigger and more pictures, click on the picture |
source: W.Szrek
Martin (Dtsch), page 448
Manufacturer: Paul Brüning, Berlin, Germany
originally introduced under the name Minerva
Literature and links:
Blümich, Wolf-G.: "Kleinaddiermaschinen Resulta" in: Histor.Bürowelt Nr. 69 (2004) (IFHB)
| principle | tooth segment |
|
|
| capacity | 7 x x 7 |
||
| input | stylus | ||
| prod. years | 1936 - 1957 | ||
| mach. built | |||
| features | 2 species, input cntrl display | ||
| dimensions | 8.5 x 15 x 11 cm | ||
| weight | 1.5 kg | ||
| known s/n | no s/n, engraved mmyy of production | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
| principle | tooth segment |
|
|
| capacity | 7 x x 7 |
||
| input | stylus | ||
| prod. years | 1957 - 1969 | ||
| mach. built | |||
| features |
2 species, input cntrl display blind in result display |
||
| dimensions | 8.5 x 15 x 11 cm | ||
| weight | 1.5 kg | ||
| known s/n | no s/n, engraved mmyy of production | ||
| for bigger and more pictures, click on the picture |
source: H.Schneemann
Martin (Dtsch), page 412
"The Express was a 7 digit adding machine with direct finger input, weight 3.5 kg, automatic tenth carriage, zeroing with butterfly screws. Manufacturer was Otto Rübner, Berlin, however since a couple of years the machine is not produced anymore"
| principle |
|
||
| capacity | 7 or 8 |
||
| input | finger pads | ||
| prod. years | 1928 | ||
| mach. built | |||
| features |
adding machine |
||
| dimensions | |||
| weight | 3.5 kg | ||
| known s/n | |||
| for bigger and more pictures, click on the picture |
source: ©Tekniska museet, Stockholm
Manufacturer: Meuter & Sohn, Berlin, later Hamburg (D)
Otto Meuter started 1918 with the invention of an add/subtract slider, which was marketed under the names "Addiator", "Pro Calculo" and "Correntator". In 1928 he founded his own company and sold the add/subtract slider under the name "Produx".
From 1953 a 3 species machine (division was not possible resp. very cumbersome) was manufactured and marketed under the name "Multator" (in France "Multical"), one model had the name "a x b x c".
Literature and links:
Reese, M.: "Die Firma Otto Meuter & Sohn: Rechenapparate und Rechenmaschinen für den kleinen Mann" in: Histor.Bürowelt Nr. 43 (1995), pages 19 - 31 (IFHB)
Reese,M.: Neue Blicke auf alte Maschinen (2002) , pages 112 - 117 (IFHB)
source: M.Reese
| principle | adapting segment |
|
|
| capacity | 10 (w/o cr) x 5 (w/o tc) x 10 |
||
| input | cursors | ||
| prod. years | 1954 | ||
| mach. built | ca. 10.000 | ||
| features |
|
||
| dimensions | 24 x 14 x 8 cm | ||
| weight | |||
| known s/n | ca. 500 - 10.000 | ||
| for bigger and more pictures, click on the picture |
source: A.Devaux
| principle | adapting segment |
|
|
| capacity | 10 (w cr) x 5 (w/o tc) x 10 |
||
| input | cursors | ||
| prod. years | 1955 - 1966 | ||
| mach. built | |||
| features |
division by use of complement numbers, back transfer |
||
| dimensions | 26 x 17 x 9 cm | ||
| weight | 2 kg | ||
| known s/n | ca.10 000 - 46 000 | ||
| for bigger and more pictures, click on the picture |
source: M.Reese
| principle | adapting segment |
|
|
| capacity | 10 (w/o cr) x 5 (w/o tc) x 10 |
||
| input | cursors | ||
| prod. years | 1962 - 1970 | ||
| mach. built | |||
| features |
3 species, back transfer |
||
| dimensions | 26 x 17 x 9 cm | ||
| weight | 2 kg | ||
| known s/n | ca. 25.000 - (3) 68.000 | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
| principle | adapting segment |
|
|
| capacity | 10 (w/o cr) x 5 (w/o tc) x 10 |
||
| input | cursors | ||
| prod. years | 1963 - 1969 | ||
| mach. built | |||
| features | true division |
||
| dimensions | 26 x 17 x 9 cm | ||
| weight | 2 kg | ||
| known s/n | ca. 40.000 - (4) 63.000 | ||
| for bigger and more pictures, click on the picture |
source: M.Reese
manufacturer: O.Meuter & Sohn
distribution: Summira KG, Roisdorf/Bonn (Summira)
| principle | adapting segment |
|
|
| capacity | 10 x 5 x 10 | ||
| input | cursors, non-rotating | ||
| production years | around 1955 | ||
| machines built | |||
| features | 3 species | ||
| known s/n | 33.685 | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
Martin (Dtsch), page 424
In 1929 the Hannovera company was in financial trouble. The Swiss company "EOS-Genossenschaft für Fabrikation und Vertrieb von Rechenmaschinen" bought parts and partly or complete assembled Hannovera CK and sold them under the name EOS.
(2MB) M.Reese: Hannovera
und EOS from "Neue
Blicke auf alte Maschinen" (in German)
(permission from the author)
| principle | adapting segment |
|
|
| capacity | 9 x 8 x 13 | ||
| production years | 1929 | ||
| machines built | ca. 800 | ||
| features | no tenth carriage in counter register | ||
| s/n | 20.001 - ca. 20.800 | ||
| for bigger and more pictures, click on the picture |
source: A.Pohl
Martin (Dtsch), pages 447 - 448
| principle | pin wheel |
|
|
| capacity | 10 x 8 x 13, 10 x 8 x 16 | ||
| input | cursors, rotating | ||
| production years | 1929 - 1938 | ||
| machines built | |||
| features | identical to Walther RMK | ||
| known s/n | 20.019 | ||
| for bigger and more pictures, click on the picture |
