email : firstname.lastname@example.org.
Webster’s Revised Unabridged Dictionary,
TrinksBrunsviga J 13054
Brunsviga Midget 16282
Dactyle 7x6x10 ser 10874
(non Odhner design)
Kirja 9x8x13 ser 1136
Mercedes-Melitta ser 2703
Mira 9x8x13 ser 5399
Muldivo ser 7673
Odhner Arithmometer ser 1341
Original Odhner 9x8x13 ser 38146
Triumphator A ser 7k
Burkhard ser 342
with and without reset
Webb The Adder 1889 patent
Goldman Arithstyle ser 11604
SuN ser 6381
Direct Multiplication Machine:
Proportional Displacement Machines:
Geared Wheel Machine
Miscellaneous Calculating Devices (these are not machines):
· Abacus Japaneese
· Abacus Chinese
· Arithmographe Troncet
· Calculimetre G. Charpentier
Locke Adder year 1901 model
New additions (the pictures will be integrated later, who knows when ;((( ):
· Abacus – Japanese (?) (Lady’s?)
· Abacus – Chinese (porcelain)
· Arithmographe Troncet
· Baby Peerless
· Brunsviga Midget 16282
· Burkhard ser 342
· Calculimetre G. Charpentier
· Canivet sector
· Complete list of early Brunsvigas
· Comptator ser 8020
· Dactyle 7x6x10 ser 10874
· Goldman Arithstyle ser 11604
· Keuffel & Esser slide rule model 100.
· Kirja 9x8x13 ser 1136
· La Rapide – Brunsviga model B
· Locke Adder year 1901 model
· Mercedes-Melitta ser 2703
· Mira 6x5x10
· Mira 9x8x13 ser 5399
· Muldivo ser 7673
· Odhner Arithmometer ser 1341
· Original Odhner (Soviet) 9x8x13 ser 38146
· Odhner Doppel (grey model)
· Palmer’s Pocket Scale
· Rapid Calculator
· SuN ser 6381 (British currency model)
· Thales Geo
Age list (all of this information with exception of list of early Brunsviga models and serial numbers for Facit calculators comes from Reese book):
· Diagram of history manufacturing of mechanical calculators.
· Years different companies were in business.
· Early Brunsviga models.
· Brunsviga serial numbers.
· Triumphator serial numbers.
· Lipsia serial numbers.
· Facit serial numbers.
· Hannovera serial numbers.
· Mira serial numbers.
· Walther serial numbers.
Ernst Martin book “Calculating Machines” you can find at www.rechenmaschinen-illustrated.com. This site adds value to Martin’s book by adding pictures, articles and some other information.
Visit hpmuseum site to find out how these machines work.
Visit “Original Documents on the History of Calculators” to find documents related to calculating devices.
Visit Michel Bardel's web site to see the list of thousands of calculators. It is invaluable source of the information.
Josef Balsach created a very beautiful book about the calculating devices. You can find it on personal.telefonica.terra.es/web/calculating/. You will find pictures and description of many very interesting devices there.
There is a new web site www.rechnerlexikon.de, in German, there is also English navigation there. They are trying to create as big catalogue of machine as they can. The site has interesting articles and pointers to the patents of many different machines.
Another very interesting place is Reinhard Atzbach’s web site. Reinhard has a very interesting and educative way to present different machines. It is in German. I was using http://world.altavista.com/ to translate these pages. You can also use google translation features or their toolbar.
I am looking for the information about Stern, Staffel and Slonimski machines. If you know about any surviving ones or have their pictures please email.
· THANKS to my wife Irena for understanding…
· Thanks to my daughter Monika for consulting on how to do WEB pages.
· I am most grateful to Mr Tadeusz Kabzinski. He was a fantastic person and a mechanical genius. He loved the old office equipment which he has been repairing for the last 57 years in his own small repair shop in Warsaw, Poland. He offered me his friendship, and he brought many of my machines back to life. I learned a lot of things from him. I guess I would never have gotten this far with the collection if not for his wonderful personality and his incredible skills.
For the idea of how to set up the website, I
am especially grateful to a very good friend of mine and a great artist –
Over the years I learned a lot from my fellow
collectors. I am especially grateful to
· Ernst Martin’s book is available as a both Xerox copy and Adobe Acrobat file (.pdf) from MIT bookstore. It is the best and the most interesting book on this subject.
· A lot of information about production years for different machines, and a beautiful diagram about the evolution of the machines come from Martin Reese book. This book is full of information. Unfortunately you need to know German to understand it all. I do not know German ;(((
I learned of the article about the
Staffel machine from
· Serial numbers for the Facit machines I found on Facit page. You will find a lot of interesting information there. Look at their album. It is FANTASTIC!!! You can find a lot of information about Facit calculators in Christopher Nöring page.
· Victor machine’s instructions I found in the jmgoldman collection. I always enjoy looking at these toys.
· Webb patent drawings I found on the WEB. Unfortunately I do not remember where ;((((
List of Early Brunsvigas, which
is extremely interesting, I received it initially from one of the fellow
collectors. The complete list I received from
· Portrait by Antoni Blank of Abraham Stern’s comes from the book “Zydzi Polscy” (Polish Jews).
· Almost all of the photos were taken by me. In a few cases I used pictures of my machines from ebay.
 Brunsviga B serial 980 is 894-1895 model. This machine is a so called Schuster machine. One can recognize it from two holes after Schuster logo (with hand) that used to be around Brunsviga logo. Schuster was selling these machines. This machine has clearing mechanism and decimal points. This mechanism was added later. I suspect circa 1910-1920. Unfortunately patent information was painted over at this time. All early Brunsviga models had patent information on the left side. The fewer patents - the more valuable for the collector (except of the number 0 as in my case ;(((). Brunsviga with serial number 220 had 3 patent numbers. This model still did not have a carry mechanism above 10-th position. This mechanism was introduced around 1900. The other model with serial no 6846 has it. The earliest known example of Brunsviga B with a short crank and serial no 73 was sold at Breker auction in November 2002 for Euro 6,000. This model had a short crank. There were only 600 of those made. Short crank Brunsviga looks very similar to Odhner Arithmometer with serial number 1341.
 Brunsviga was selling its calculators in France under the name La Rapide and Brunsvigula. This model is from 1898.
 Brunsviga B ser 11364 has already a clearing butterfly on the left side for the setting register (levers). This clearing mechanism was introduced by an engineer Trinks.
 Brunsviga A ser 1725 is an 1896-1897 model with 18 digits precision. This model is quite rare. It still does not have a carry above 10-th position.
 Brunsviga M is a miniature version of Brunsviga B
 Brunsviga MA is a miniature version of Brunsviga A
 Brunsviga MJR is a very interesting machine. In “standard” Odhner machine levers rotate when any arithmetical operation is performed. In MJR the levels are stationary -they disengage when any arithmetical operation is done,
 Brunsviga MH is an interesting machine. It has two rotation registers. One (the top one) does a carry, the bottom one as the older models goes into red digits range instead of doing the carry to the next decimal position.
 Brunsviga MR has a very interesting mechanical design. It is a split carriage, result register moves, rotation register is fixed.
 Brunsviga MD has 20 digits output (result register). Relatively scarce model.
 Trinks Triplex is one of my favorite machines: this machine may work as 3 different machines: 20x12x20 or 12x12x12 and 8x12x8. Depending on the lever position on the right side of the carriage it will be either 20x12x20 or the other two machines. In the second case the carry in the result register does not carry between 12-th and thirteenth position. The other machine is very similar, with the exception that it has an additional register like model MH.
 This is a very rare model of Felix. It is made out of
copper like Odhner machines manufactured in
 Apparently Original Odhner name was used in
 Facit standard introduced a very special feature: it has a tabulator to shift the carriage to a specific decimal position. I did not see this feature in any other machine.
 This model of Marchant is an early model. It resembles a lot an Original Odhner machines (like Chateau, Goldsmidt…). It does not have the setting register on the top.
 Muldivo looks like Chateau , Dactyl, Goldsmidt and early Marchant. Muldivo was a reseller of other machines, which have been resold under the name Muldivo. This machine is probably an early Chateau. It was made for an English market.
 This Odhner is one of the most sought after machines. It has a short crank. Around 3,000 Odhners with short crank were manufactured. This machine was manufactured in 1898-1899. To see more Odhner machines visit Odhner Calculator Family tree and Kevin Odhner page.
 After Odhner patent expired Odhner changed the name of the machine to Original Odhner. This Original Odhner is one of the first Original Odhners. It still does not have a clearing register. This machine was made in 1906-1907.
 After the WWI Odhner or rather a nephew of “Original
Odhner” moved to
 Odhner 5x5x9 is a very rare machine. It was made as a “cheap” machine, there is no mechanism for “controlled” decimal shift of carriage, and it has only 5 positions in the setting and rotation register. This machine was model 9. It was short lived and another machine was introduced as model 9.
 Prometeus is a very rare and nice machine. I am not sure if it was ever in production. Prometeus was a factory manufacturing slide rules.
 This is one of the earliest Thales machines (serial 53). It does not have a mechanism for decimal shift of the carriage.
 This model of Thales and the next machine are special. Instead of having a decimal shift left and right, it has a spring on the back that moves the carriage “automatically” by one position left. Like if it was made specially to facilitate division operation. Very unusual feature.
 Early Triumphator machines were quite heavy. This model C weights only 15 kilos (just a little over 31 pounds). Like other early Triumphators it has a decal with a factory logo on the back.
 Curta is one of the nicest machines ever made. There are collectors collecting only Curta calculators. These are relatively new machines, from 1948 and later. If you want to know more about Curta calculators visit Curta Page
 This is one of the first Curta 2. It has serial no 501496. Curta 2 started with serial no 500,000. It is very similar to Curta 1, it has more capacity.
 Madas machines as well as Mercedes-Euclid and
Hammann-Manus were doing automatic division (within this collection). Madas and
Millionaire were manufactured by Egli in
 Staffel was an inventor and a clockmaker. He made few
different machines (I know of 3 different ones). At least one survived. This
machine belongs to the
 Bohnam and Schram (1905) was the first model of this type of calculator, it is relatively rare. Other machines are Calculator Corporation and Lightning Corporation.
 Brical machine does not use a decimal arithmetic.
There were many different calculating devices that would not use decimal
arithmetic. English money is particularly “painful”. In one machine there might
be up to 4 different calculating bases: farthings (base 4), pennies (base 12),
shillings (base 20) and pounds (base 10). In this collection one of the SuN
adding machines, one of the Comptators and Addometer are also using non-decimal
arithmetic. See article by Friederich Diestelkamp on non-decimal
calculating devices. There were also devices that claimed to do multiple basis
arithmetic at the same time. Ribbon Adder is an example of such device.
 British currency model
 Rapid Computer (1895) was the first popular machine
of this type. There were many improved machines of this type manufactured in
 British currency model.
 Torpedo uses only keys 1 through 5 to enter number 1 through 9. One had to push 4 and 5 to add 9. This kind of set up was supposedly saving on the hand movement and it was easier for operator of this machine.
 Direct multiplication machines are very special.
There were a few different ones: Bollée (this was the first one, designed by
the French industrialist Bollé at the end of XIX century, you can see it in
 Consul the Educated Monkey is an educational toy to teach children multiplication tables (1916?)
 This little piggy is an educational toy to teach children add numbers 1 through 5 (US 1930-ies?)
 This is actually an advertisement for this calculator. Look how the numbers to be added change from 1 till 20. Inventor advertised this machine will do any number based calculations: British sterling, decimal and fractions…
 Totalisateur Troncet was used to add numbers up to 99, and in sous (5 franks) up to 500. made by Larousse in 1880-ies.