Martin (Dtsch), page 338 - 341
"Manufacturer: Hannovera Rechenmaschinenfabrik, Oventrop, Heutelbeck und Co., Peine."
Martin Reese in his book "Neue Blicke auf alte Maschinen" gives details about the development of the company and the models.
(2MB) M.Reese: Hannovera
und EOS from "Neue
Blicke auf alte Maschinen" (in German)
(permission from the author)
Martin Reese / Werner Lange: "Die Geschichte der Firma "Hannovera" ", Historische Bürowelt, 51, pages 20 - 30 and 52, pages 16 - 26.
| principle | pinwheel |
|
|
| capacity | A: 9 (w/o cr) x 8 (w tc) x 13 AK: 9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | 1923 - 1925 | ||
| mach. built | ca. 4.000 (together with B/BK) | ||
| features | |||
| dimensions | 31 x 14 x 10 cm | ||
| weight | 6 kg | ||
| known s/n |
low: 1 480 high: 6 543 |
||
| for bigger and more pictures, click on the picture |
| principle | pinwheel |
|
|
| capacity | B: 20 (w/o cr) x 12 (w tc) x 20 BK: 20 (w/o cr) x 12 (w/o tc) x 20 |
||
| input | cursors, rotating | ||
| prod. years | 1923 - 1925 | ||
| mach. built | ca. 4.000 (together with A/AK) | ||
| features | |||
| dimensions | 40 x 14 x 10 cm | ||
| weight | |||
| known s/n | 1.000 - ca 5.000 |
||
| for bigger and more pictures, click on the picture |
the model C / CK has a different mechanical principle: placing gear wheels (adapting segments, Stellzahnräder), the production was easier and cheaper.
A variant was marketed as cashier model.
In 1929, ca. 800 machines were build in Switzerland under the name EOS.
| principle | adapting segment |
|
|
| capacity | 9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | 1926 - 1930 | ||
| mach. built | ca. 3.000 | ||
| features | |||
| dimensions | 30 x 24 x 14 cm | ||
| weight | 7 kg | ||
| known s/n | 10.000 - ca 18.000 |
||
| for bigger and more pictures, click on the picture |
source: A.Pohl
Martin (Dtsch), pages 343 - 345
"This machine was originally called Pythagoras and was manufactured and distributed by the firm Maschinenbau Koch, Berlin 0 17. Shortly afterward, the manufacturing rights were transferred to Bing-Werke A. G. in Nürnberg, which still builds them today. Sales are managed through their sales firm Orga A. G. in Berlin N. W."
| principle | pin wheel |
|
|
| capacity | 9 x 8 x 13 | ||
| input | sliders | ||
| production years | 1921 - ca. 1928 | ||
| machines built | |||
| features | unique arrangement of input | ||
| known s/n | 364, 1.527, 1.939 | ||
| for bigger and more pictures, click on the picture |
source: T.Hampel
Martin (Dtsch), pages 347 - 348
"This is a small printing adding machine with chain drive. marginal scales for complementary digits used in subtraction, and a setup control mechanism. Manufacturer: Ruthardt and Company G.m.b.H., Hack Strasse 77, Stuttgart."
| principle | chain adder |
|
|
| capacity | 10 or 13 |
||
| input | stylus | ||
| prod. years | 1922 - ??? | ||
| mach. built | ca. 5.000 | ||
| features | 1 species, integrated printer | ||
| dimensions | 11 x 31 x 7.5 cm | ||
| weight | 2.5 kg | ||
| known s/n | |||
| for bigger and more pictures, click on the picture |
source: M.Lewin
Martin (Dtsch), page 348 - 349
"This is a visible printing, full-keyboard adding machine. It has ten places in both the setup and result mechanisms. It has self-correcting keys arranged in colored groups. The repeat, subtotal, key release, non-addition, and total levers are all attached to the right side of the machine-so that the left hand is free for checking and to use the nonprinting lever. The paper carriage takes 30-cm-wide paper, and the carriage is shifted by hand. It is also equipped for rolls of paper.
Designer: H. C. Peters. Manufacturer: Peters-Morse Mfg. Company, Ithaca, New York. The designer was formerly with the Burroughs Company."
Manufacturing was turned over 1932 to the Allen-Wales Adding Machine Corp.
| principle | tooth bar |
|
|
| capacity | 10 x x 10 |
||
| input | full key board | ||
| prod. years | 1922 | ||
| mach. built | |||
| features | 2 species | ||
| dimensions | 25 x 35 cm | ||
| weight | 16 kg | ||
| known s/n | |||
| for bigger and more pictures, click on the picture |
source: T.Leipälä
Martin (Dtsch), page 350
"This is a pinwheel machine. Manufacturer: Guy’s Calculating Machines Ltd, Truro Works, Truro Rd., Wood Green, London N22."
Distributed by Muldivo Calculating Machine Co. Ltd., 49 Queen Victoria Street, London EC4
for some more details see Nigel Tout web page.
| principle | pinwheel |
|
|
| capacity |
12 x 10 x 18 |
||
| input | cursors | ||
| production years | 1922 - 1955 ? | ||
| machines built | ?????? | ||
| features | back transfer | ||
| known s/n | 4143, 6046 | ||
| for bigger and more pictures, click on the picture |
source: Antikma Auktionen - Rainer Rzepka
Martin (Dtsch), page 350 - 352
"This machine was previously called Amco and was manufactured and distributed by the Accounting Machine Company Inc. in New York. At the beginning of 1922 both manufacturing and sales rights were transferred to the Todd Protectograph Company, Rochester, which then named the machine the Star."
| principle |
|
||
| capacity | 7 x x 7 and 9 x x 9 |
||
| input | finger | ||
| prod. years | 1922 | ||
| mach. built | |||
| features | 2 species | ||
| dimensions | 14 x 17 x 16 cm | ||
| weight | 3.6 kg | ||
| known s/n | 12 893 (Star), 34 772 (Todd) | ||
| for bigger and more pictures, click on the picture |
source: K.Haugland
1 - 332 , pages 355 - 356 & 385
"This is a visible printing, full-keyboard adding machine.
Models:
671 7 places with a stationary 13-cm-wide carriage $125.00
680 8 places with a stationary 13-cm-wide carriage $150.00
690 9 places with a stationary 13-cm-wide carriage $175.00
691 9 places with a 22-cm-movable carriage $200.00
Manufacturer: Add-lndex Corporation, 120 Broadway, New York."
"The manufacturing rights are turned over to the Rapid Calculator Co., which is part of the Allen-Wales company."
| principle | tooth bar |
|
|
| capacity | see above |
||
| input | full keyboard | ||
| prod. years | from 1922 | ||
| mach. built | |||
| features | 2 species, printing | ||
| dimensions | 25 x 35 cm | ||
| weight | 12 - 14 kg | ||
| known s/n | 47 993 | ||
| for bigger and more pictures, click on the picture |
source: T.Leipälä
3 pages 356 - 357 & 409
"This machine has an area of only 18 x 28 cm and weighs 5.5 kg, hence the name Portable. it is a visible printing, full-keyboard adding machine with self-correcting keys.
Designer: Glenn 1. Barrett, who was also the designer of the machine by that name. Manufacturer: Corona Typewriter Company, Groton. Distributed by: Portable Adding Machine Sales Company, 208 S. La Salle St., Chicago."
"The Corona is the former Portable and has the following function keys: repeat and clearance, sum, intermediate sum, non-adding, non-printing. The 7-digit machine is now called model A, the 1928 launched 9-digit machine model B, the same machine without direct subtraction model E."
| principle | tooth bar |
|
|
| capacity | 7 (w/o cr) x x 7 |
||
| input | full keyboard | ||
| prod. years | from 1923 | ||
| mach. built | |||
| features | 1 species, printing | ||
| dimensions | 18 x 28 x 23 cm | ||
| weight | 6 kg | ||
| known s/n | 600,401 | ||
| for bigger and more pictures, click on the picture |
Martin (Dtsch), pages 359 - 360
"This is a pinwheel machine, similar to the one described in the introduction, which at the moment appears in four models:
Model A: has tens-carry in the revolution counter.
Model B: does not.
Model A2: has tens-carry in the revolution counter and has an automatic adding device attached (this means that during the time when addition is taking place in the result mechanism, the setting levers are automatically returned to their zero position without any action on the part of the operator).
Model D: does not have tens-carry in the revolution counter. although it does have twenty places in the setting mechanism.
One special advantage of this machine is that the zero positioning of the setting levers is not controlled by wing nuts but by pressing a button on the right side of the machine."
"Manufacturer: Monos A. G. Braunschweig, Cammann Strasse 7."
| principle | pinwheel |
|
|
| capacity | 9 x 8 x 13 |
||
| input | cursors | ||
| production years | 1923 - 1928 | ||
| machines built | ca. 2000 | ||
| features | manual or electric driven | ||
| known s/n | 1.620, 1.726, 1.808, 1.886 | ||
| for bigger and more pictures, click on the picture |
source: M.März
Martin (Dtsch), pages 360 - 363 & 425 - 426
"There are two keyboard calculating machines in existence with this name; they are manufactured and sold by the firm Deutsche Rechenmaschinenwerke A. G. in Leipzig.
Kuhrt A: Ten decimal places in the setting mechanism, ten decimal places in the revolution counter and thirteen decimal places in the result mechanism,
Model AB: is the same as described above but possesses two counter mechanisms for results and has an arrangement by means of which computed results may automatically be transferred from the result counter mechanism into the keyboard, so that one may carry out a second, third, or further multiplication without new settings in the keyboard.
Kuhrt US is a printing, keyboard calculating machine with manual or motor drive, eighteen decimal places in both the setting and result mechanisms, and 12 decimal places in the revolution counter. It operates with multiplication bodies similar to the machine from Bollée, Steiger and Moon Hopkins."
The company was taken over by Brunsviga in 1928, production was stopped.
the machine is available with various capacity and with an electric motor
| principle | pin wheel |
|
|
| capacity | 8 (w cr) x 8 (w/o tc) x 13 (A2) |
||
| input | full keyboard | ||
| prod. years | 1923 - 1928 | ||
| mach. built | ca. 2,000 (all models) | ||
| features | |||
| dimensions | 29 x 42 x 17 cm | ||
| weight | 15 kg | ||
| known s/n | 1,584 | ||
| for bigger and more pictures, click on the picture |
the machine is available with various capacity and with an electric motor
| principle | pin wheel |
|
|
| capacity | 8 (w cr) x 8 (w/o tc) x 16 (AB3) |
||
| input | full keyboard | ||
| prod. years | 1923 - 1928 | ||
| mach. built | ca. 2,000 (all models) | ||
| features | add. storage register (cap. 10), back transfer | ||
| dimensions | 37 x 42 x 17 cm | ||
| weight | 15 kg | ||
| known s/n | 1,721, 1,790 | ||
| for bigger and more pictures, click on the picture |
source: HJ.Denker
Martin (Dtsch), page 365 - 367 & 409
"The Demos (i.e., the people's calculating machine) is not one of the pinwheel machines. Its setup wheel (illustrated in figure 306) is stamped out of a single piece of steel. It is therefore not subject, in the same way as the pinwheel, to wear and tear and, because of its simple design, is a fraction of the cost."
construction and manufacturing: Carl Moesch, distribution: Theo Muggli, Switzerland
| principle | setup wheel |
|
|
| capacity | 9 x 8 x 14 | ||
| input | cursors | ||
| production years | 1923 | ||
| machines built | ??? | ||
| features | |||
| for bigger and more pictures, click on the picture |
source: F.Haeghens
Martin (Dtsch), page 368 - 369
"Manufacturer: S. W. Allen Company, 20 South Eighteenth St., Philadelphia. The machine is said to have been manufactured since 1918. Reports of sales in larger numbers date from 1923. It is a pinwheel machine produced with either 8 x 9 x 13 places or 9 X 10 X 18 places. It weighs 4.5 kg."
| principle | pinwheel |
|
|
| capacity | 8 x 9 x 13, 9 x 10 x 18 |
||
| input | cursors, rotating | ||
| production years | 1918 - ? | ||
| machines built | |||
| features | |||
| known s/n | 1.224, 3.004, 3.652, 9.618 | ||
| for bigger and more pictures, click on the picture |
source: S.Wolff
Gauß (1924) / Cosmos
Martin (Dtsch), pages 372 - 373 & 415
"The Gauss calculating machine factory was founded in Braunschweig in 1923 by E. Hengstmann, H. Scharff, and R. Ulbrich. It is a pinwheel machine with fourteen places in the result mechanism, ten in the setup mechanism, and nine in the revolution counter. Zero position of the setting levers is brought about by pressing the zero position key on the right side of the machine. The carriage is also shifted by means of keys. Only a few dozen machines were ever produced when, in October 1924, the production rights were transferred over to Hengstmann and Company. a factory for calculating machines situated at Mauernstrasse 41, Braunschweig. The machine is now called Cosmos. There is said to be a model under construction that has tens-carry in the revolution counter."
| principle | pinwheel |
|
|
| capacity | 10 x 9 x 14 |
||
| input | cursors, rotating | ||
| production years | 1924 | ||
| machines built | ca. 50 | ||
| features | |||
| known s/n | 1247, 1324, 1330 | ||
| for bigger and more pictures, click on the picture |
source: D.Bölter
Martin (Dtsch), pages 375 - 376 & 438 - 439
"Manufacturer: Mira-Rechenmaschinen-Fabrik, Reichenberg, Bohmen. "
Otto Kramer, Reichenberg, Czechoslowakia
Martin Reese in his book "Neue Blicke auf alte Maschinen" gives details about the Mira (page 75 ff.) and points out that the design of the Mira is based on the Rema machine.
the Mira model 1 was also marketed under the brand Richmond
| principle | pin wheel |
|
|
| capacity |
9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | ca. 1924 - 1925 | ||
| mach. built | |||
| features | |||
| dimensions | 17 x 12 x 12 cm | ||
| weight | 6.5 kg | ||
| known s/n | 2,485 | ||
| for bigger and more pictures, click on the picture |
source: Antikma Auktionen - Rainer Rzepka
| principle | pin wheel |
|
|
| capacity |
9 (w/o cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | ca. 1925 - 1926 | ||
| mach. built | |||
| features | |||
| dimensions | 30.5 x 12 x 10 | ||
| weight | 4.5 kg | ||
| known s/n | 2.401, 2.481, 2.613, 2.678 | ||
| for bigger and more pictures, click on the picture |
source: K.Schmitt
similar models: MZ = with tens carry in counter reg
MR = Visier with back transfer
MRZ = with tens carry and back transfer
other capacities: 10 x 10 x 16, 10 x 12 x 20
| principle | pin wheel |
|
|
| capacity |
10 (w cr) x 8 (w/o tc) x 13 |
||
| input | cursors, rotating | ||
| prod. years | ca. 1930 - 1940, pot. 1949 | ||
| mach. built | |||
| features | |||
| dimensions | 36 x 16.5 x 12.5 | ||
| weight | 5.3 kg | ||
| known s/n | 11.137,11.728, 15.515, 17.459 | ||
| for bigger and more pictures, click on the picture |
source: Serial
Martin (Dtsch), pages 376 - 377 & 455
"The Tasma is the smallest visible printing, full-keyboard adding machine. It measures only 28 x 14 X 20 cm, has ten places in the setup mechanism, and eleven places in the result mechanism.
Manufacturer: Thaleswerk G.m.b.H., Rastatt (see the Thales)"
see Thales
since 1930, manufacturing was done at Walther, Zella-Mehlis; distribution and sales through Tasma-Gesellschaft, Berlin.
| principle | tooth rack |
|
|
| capacity | 10 x x 11 |
||
| input | full keyboard, stylus | ||
| prod. years | 1924 - ??? | ||
| mach. built | |||
| features | adding machine, integrated printer | ||
| dimensions | 28 x 14 x 20 cm |
