Victor Model 110 adding machine Stephen Freeborn 2024-08-21 | The images in this video, except for a few, come from the book, It All Adds Up: The Growth of Victor Comptometer Coroporation, by Edwin Darby.
Centigraph adding machine Stephen Freeborn 2025-07-16 | Centigraph Adder image source: https://americanhistory.si.edu/ar/collections/object/nmah_690135One of the advertisements came from Rechnerlexikon: https://www.rechnerlexikon.de/artikel/Centigraphplus I learned an easy way to add pointer arrows to videos. Only took three years.
Hatfield adding machine Stephen Freeborn 2025-06-29 | I talk about Dubois Parmelee's adding device in here. With a bit of non-buyers remorse, I had seen an antique photograph of Parmelee's device for sale. I thought it too expensive. Now I can't even find where I saw it. I think it must have been the patent model. Greg Fudacz website: antikeychop.com/hatfieldadderwantedHickok corner cutter video source: youtube.com/watch?v=dPXIenSUTd8Hatfield image source: rarestfinds.com
Addo Model 4 adding machine Stephen Freeborn 2025-06-21 | Those Addo ad imgages all came from ebay listings.
Addo Model 2 adding machine Stephen Freeborn 2025-05-02 | Here's # 2 of my 3 series addo. See Mod 1 here: youtube.com/watch?v=IqoO21XPE5k
Addo adding machine Stephen Freeborn 2025-04-11 | This Model 1 Addo, wasn't really called the Model 1. I imagine after Model 2 was released then AB Addo retconned the name onto the device. Its the first of 3 sibling devices I plan on. Why make 1 video when you can make 3?Addo-X image source: auctionet.com/en/319643-raknemaskin-addo-x-aktiebolaget-addo-malmo-1900-tal/images#image_1Aktiebolaget image source: https://orb.kulturhotell.se/objects/c42-3665/Addo Mod 6 image source: https://collection.powerhouse.com.au/object/373039Addo-X gymnast ad image source: dwell.com/article/the-story-behind-over-125-stunning-poster-designs-9db4f74f
Rechenmaschine Brunsviga Stephen Freeborn 2025-03-06 | Man in tights ad image source: http://www.computer-timeline.com/timeline/franz-trinksOdhner 1890 model image source: https://blog.hnf.de/tag/franz-trinks/Trinks image source: http://www.computer-timeline.com/timeline/franz-trinksGN&C factory image source: fiddlebase.com/german-machines/grimme-natalis-coLusty not-Trinks image source: http://www.computer-timeline.com/timeline/willgodt-odhnerOdhner image source: http://www.computer-timeline.com/timeline/willgodt-odhnerGN&C sewing machine image source: globalsew.com/museum-machine/grimme-natalis-co-expressBrunsviga manual image source: http://www.rechenmaschinen-illustrated.com(Jeeze, right. That’s why I sometimes get lazy with my image source references.)Check out Cris Van Devel's registry of surviving Short Cranks. Good ole #370 is on there: http://www.crisvandevel.de/bvb.htm
Corema Portative adding machine Stephen Freeborn 2025-02-06 | Here is a video about the Corema Portative. Its a underpowered adding machine with much better contemporaries. Still cool though.Jaap's video about the Portatives successor: youtube.com/watch?v=v5TES4nMJg0Fröhlich dur s'Läbe: youtube.com/watch?v=WF-2VF3Vytg&list=OLAK5uy_lII35Tzm5Sf9ma9ZMZ75-6fY38PJuq89M
Mesko KR-19S mechanical calculator Stephen Freeborn 2025-01-10 | This is the Mesko clone of a Facit. The images are from Rechnerlexikon. I forgot to mention that the case panels are cast aluminum, I think.
Arithmachine adding machine Stephen Freeborn 2024-12-13 | I put in the lowest bid. I thought it was the Arithstyle not really paying attention to what I was bidding on. I was sure surprised when I won it for the opeing bid and it was the Arithmachine; win, win.
S&N adding machine Stephen Freeborn 2024-11-15 | S&N adding machine from 1910. Super&Nifty.Jaap’s video: youtube.com/watch?v=q2_mkGYtkjw&t=29sBehr image source: https://rechnerlexikon.de/artikel/Bild:Behr-Bernhard-aus-Büro-Industrie-1917.jpgGoldman image source: http://www.computer-timeline.com/timeline/henry-goldman
Facit Standard mechanical calculator Stephen Freeborn 2024-10-30 | I told my wife I'd get her in one of these videosFacit Original photo and Facit Ladies photo: https://www.rechnerlexikon.de/artikel/Facit_Original
Spalding adding machine Stephen Freeborn 2024-09-17 | Man I've gotten lazy about referencing the images I use. And maybe someday I'll get the thumbnail image cropped properly. I honestly don't know how so many people get it right.
Backman Calculator Stephen Freeborn 2024-07-26 | I have a handful of calculators for which I've been meaing to make videos. Some day my kids will go back to school.
Monroe SS 160 mechanical calculator Stephen Freeborn 2024-06-04 | I've gotten a little lazy on my photo citations, but Half of them are from Monroe's website. Smithsonian and ebay account for the others. I should be fine.
Pilot P-1 mechanical calculator Stephen Freeborn 2024-04-03 | Keybar image source: commons.wikimedia.org/wiki/File:Keybar_calculator_-_Ridai_Museum_of_Modern_Science,_Tokyo_-_DSC07610.JPGP-1 image source: commons.wikimedia.org/wiki/File:Pilot_P1_calculator_-_Ridai_Museum_of_Modern_Science,_Tokyo_-_DSC07609.JPG
Little Marvel Adder Stephen Freeborn 2024-03-08 | Boris Karloff image source: Dorothy Leishman Varney, The Forgotten GeniusPictures sent by wire image source: Dorothy Leishman Varney, The Forgotten GeniusLittle Marvel Adder image source: https://www.rechnerlexikon.de/artikel/Bild:Little-Marvel-Adder-fron-Pulley.jpgBritish Money Adder image source: https://www.rechnerlexikon.de/artikel/Bild:British_Money_Adder-TL.jpgDollar Adding Machine image source: calculatinginstruments.com/3-ábacos-de-círculos-tipo-pascalina-circle-abacusArcascope image source: Smithsonian
Columbus adding machine Stephen Freeborn 2024-02-01 | In Nineteen Hundred and Nine or Ten the Adsumudi boys failed again. Chris Vandevel’s Adsumudi video: youtube.com/watch?v=MMYXbM7UiS0Adsumudi image source: https://typewriter.slk.fi/wp-content/uploads/2015/03/adsumudi_1836_00002_iso.jpg
Mercedes-Euklid Model 1 mechanical calculator Stephen Freeborn 2024-01-09 | Cellatron image source: wikipediaMercedes-Euklid images source: smithsonian
Certa adding machine Stephen Freeborn 2023-12-26 | I used to get all bent when this device was referred to as an "column adder." It has an automatic carry so clearly it was a column adding machine. I later realized that "column adder" refers to its purpose, not mechanism.Plus adder image source: jaapsch.net/mechcalc/bellpunch.htm
Hamann Manus A Mechanical Calculator Stephen Freeborn 2023-12-16 | Christel Hamann probably has more notches in his belt than any other mechanical calcualtor inventor. He's definitely worth a Google.Haertel, Peter. Die Klassifizierung mechanischer Rechenmaschinen. https://www.rechnerlexikon.de/upload/1/13/Klassifizierung-Teil-3_07.1.pdfHamann Manus interior image source: jaapsch.net/mechcalc/hamann.htmSwitching Latch schematic source: http://public.beuth-hochschule.de/~hamann/schemes/swlatchw.htmlBraun Calculator image source: history-computer.com/anton-braunJacob Leupold image source: history-computer.com/jacob-leupold
Brunsviga Nova 10 Mechanical Calculator Stephen Freeborn 2023-11-22 | Its getting harder and Harder to calculate ways to add my lovely assistants into these videos. (See what I did there with two math puns in one sentance?)11E & 11S image source: WikipediaB10 image source: ArthmeumFranz Trinks image source: Computer-timeline.comStepped Drum diagram image source: Peter Haertel, Die Klassifizierung mechanischer Rechenmaschinen
Archimedes F Junior mechanical calculator Stephen Freeborn 2023-10-24 | The images from this video came from "Archimedes: Die Geschichte einer Rechenmaschinenfabrik in Glashütte/Sachsen," by Verlag Sünkel, 2016."The 5-year-old came from me, 2017.
British Calculator Model B1 Stephen Freeborn 2023-10-01 | Dad gum spoiler in the title. I don't know how else to do it.Brical Model C source: https://www.rechnerlexikon.de/artikel/Bild:BriCalModC-stewe.jpg
Universal Cash Recorder Stephen Freeborn 2023-08-19 | I got so excited with this one, I forgot to copy the websites that I took the images from. They are all public domain stuff though. (Hopefully nobody comes looking for their share of all the money I'll make off this video.)
Burkhardt A mechanical calculator Stephen Freeborn 2023-08-07 | Burkhardt produced the first clone of the Thomas Arithmometer in 1880. Burkhardt and factory Image source: history-computer.com/arthur-burkhardt-biography-history-and-inventionsBurkhardt marketing and ETZ model image source: https://www.glashuetteuhren.de/zuliefer-feinmechanische-industrie/spezialzweige-der-glashuetter-industrie/1-deutsche-rechenmaschinenfabrik-arthur-burkhardt/
Austria V mechanical calculator Stephen Freeborn 2023-07-05 | This Austria Model V was made by Herzstark & Co. in 1910. Curt might get all the Herzstark limelight, but Samuel had so really clever devices too. The Oughtred Society sells an english translation (oughtred.org/curta-book.shtml) of Curt Herzstarks autobiography, Kein Geschenk für den Führer. Don't make the mistake I did and buy the German version to use googletranslate. It has a lot of information on Samuel Herzstark. It's worth a read.Austria 1 image source: https://www.rechnerlexikon.de/artikel/Bild:Austria-I-IIa-IIb-Wochinz.jpgElektromens image source: Kein Geschenk für den Führer - Curt HerzstarkYoung Curt image source: https://blog.nationalmuseum.ch/en/2021/12/numbers-in-a-can-the-curta-handheld-calculator/Samuel image Source: Kein Geschenk für den Führer - Curt HerzstarkZwilling image source: https://www.rechnerlexikon.de/artikel/Bild:Austria_Zwilling-Anzeige-1909_Org.jpg
Saldorita adding machine Stephen Freeborn 2023-06-15 | If you have access to the Swedish Dagens Nyheter newspaper archives and can show me those articles from the 1930s and 40s that mention the Saldorita, I’d love to see them. I wasn’t able to make an account with them. One of those comments on the Facebook page I’ve linked below hints to a newspaper article with some good information. But Raoul Johansson is pretty tight lipped to my inquiries. Sadly I don’t think his referenced article is one of those from Dagens Nyheter (not that I can see those either). What a strange device.Saldorita ad image source: u13101111.pwww.webhosting.telia.com/saldorita.htmlSaldorita image source: auctionet.com/sv/2337410-raknemaskin-saldorita-saldoritaverken-1930-tal/imagesHugo Sandberg image source: facebook.com/groups/874599749555645/posts/878840269131593
Sears Back-to-School Adding Machine Stephen Freeborn 2023-05-25 | Shortest one yet. Simplest device yet.Astronomy volvelle gif source: Smithsonian16th century volvelle image source: SmithsonianUS state facts volvelle image source: tile.loc.gov/storage-services/service/pnp/ppmsca/85700/85769v.jpgColor Helm clip used without permission: youtube.com/watch?v=htTg301-u98&t=183s
Kuli adding and multiplication machine Stephen Freeborn 2023-05-04 | I had a good assistant for this one. ( I don't have 4 hands.) Kuli simulator: Stephan Weiss (Sorry for pronouncing it, “Stephen”) http://www.mechrech.info/workmod/kuli/kuliswf.htmlArgos image source: http://www.rechnerlexikon.de/artikel/Bild:Behr-SN105639-HHB.jpgALL adder advertisement source: Kees Nagtegaal, mechanicalculator.com/advertisements-book
Danaddo adding machine Stephen Freeborn 2023-04-13 | If you find the patents for this device, or know anything about this device leave a comment.Danaddo image source: www.rechner-ohne-strom.deDanuvia motorcycle source: https://www.autoszektor.hu/hu/content/bekemenet-fegyver-helyett-autot-motort-gyartanakDanuvia machine gun image source: guns.fandom.com/wiki/Gebauer_machine_cannon
Argos II adding machine Stephen Freeborn 2023-03-23 | The D.R.P. and U.S.P. on the back likely stand for “Deutsches Reichspatent,” and “US Patent,” (thanks Jaap) but I could not find Behr’s elusive German patents. Plus the US patents he has aren’t anything like this machine. Behr image source: RechnerlixikonGreif ad image source: source: RechnerlixikonS&N image source: wikipedia
Little Giant Adding Machine Stephen Freeborn 2023-03-09 | "Little" refers to the size. "Giant" is for its sound.Champion cash register image source: collections.artsmia.org/art/90133/champion-cash-register-still-bank-united-statesDayton Friction Toy Catalogue source: atca-club.org Dayton Friction Adding Machine & Kel-San Adding Machine image source: Russo, Thomas A. Antique Office Machines: 600 years of calculating devices. Atglen, PA: Schiffer Publishing LTD, 2001.
Rapid Calculator Stephen Freeborn 2023-02-24 | What originally caught my eye about the Rapid Calulator was the crank handle hub. Besides that point it is an extremely typical example of an early 20th century pinwheel.If you like Curvy George, check out Greenough George Washington, my personal favorite.Rapid Calculator Image source: www.rechnerlexikon.deOtto Schuman Imag Source: www.opschuman.com/history.html (expired domain)
Adall Calculator Stephen Freeborn 2023-02-17 | I didn’t even mention Egrich’s partner, Albert Hauff. Also, Denz writes that Egrich sold rights to Dreyfus and Levy who then developed it a bit. Be not the last by whom the new is tried,Nor yet the first to cast the old aside!"Pence" is the plural of "penny." I used it wrong here and noticed after I uploaded it. I can't get myself to say "minuend" outloud.Most of my information on this device comes from Willfried Denz. How he found all this information floors me: https://www.rechnen-ohne-strom.de/rechner-galerie/addiermaschinen/scheibenaddierer-ugrich-hauff-adal-rsb/Adal image source: icollector.com/The-Adal-Calculator_i8478590RSB Universal Image Source: calculatinginstruments.com/4-de-contabilidad-column-or-accounting-adder
Pico Adding Machine Stephen Freeborn 2023-02-07 | It's as good or bad as the Gem. I don't know why the Pico's makers thought it could survive when the established device it was cloning was at the end of its life.Gem image source: https://americanhistory.si.edu/collections/search/object/nmah_690289Triumph Adding Machine image source: commons.wikimedia.org/wiki/File:Triumph_adding_machine_gnangarra.JPGDux Adding Machine image source:worthpoint.com/worthopedia/antique-dux-forum-schmidt-1910-adding-408767157
Lindström Record mechanical calculator Stephen Freeborn 2023-01-26 | It was first called the Record Universal Rechenmaschine by Hugo Cordt then simply “Record” by Lindström. I ordered some knobs to replace the ones that broke during shipping. Shipping damage on these old calculators is so frustrating, especially when the devices don’t come up for sale very often. I got tired of waiting for them to come from China, so I decided to post it without clearing knobs. Archimedes image source: jaapsch.net/mechcalc/images/archimedes/big/archimedes23.jpgCheck out Jaap’s video of that mechanism in action: youtube.com/watch?v=TN-jltXqlq8&t=461sPetersson calculator image source: history-computer.com/axel-jacob-peterssonPetersson mechanism screen grab source: Arithmeum, youtube.com/watch?v=5LggBLGCeNkRheinmetall image source: http://www.rechnerlexikon.de/artikel/Bild:Rheinmetall_K1e_SN35521_offen-vorn_Eckst%E4dt.jpg
Harts Mercantile Computing Machine Stephen Freeborn 2023-01-21 | I forgot to say my biggest annoyance with this device. When I go to line a number up with the stylus, I tend to aim for a hash mark, which seems intuitive. However, on this device the numbers actually sit in between the hash marks and you have to aim for the number itself. This little design caused me to err as you see in the video. Hart’s machine image source: historictech.com/product/wm-harts-mercantile-computing-machine-c-1878Fardoil Adding machine source: rarestfinds.comAdall Calculator image source: icollector.comBriggs Quick and Sure Reckoner image source: https://www.si.edu/object/briggs-quick-and-sure-reckoner:nmah_690857Conkey and Loomis Improved Calculator image source: https://www.si.edu/object/improved-calculator-conkey-and-loomis:nmah_690273Farmer Tallying Instrument, Haines Calculating Machine, Hatfield Adding Machine, Hergenroeder Adding Machine, Alonzo Johnson Calculating Apparatus, Mendenhall Practical Calculator, Strode Adding Machine, Taylor Adding Machine Images source: Smithsonian Gordon’s Adding Machine, Holman Adding Machine image source: History-Computer.orgPrewett Addogra image source: https://www.si.edu/object/prewett-addograf:nmah_690240
Ellis Wolverine Adding Machine Stephen Freeborn 2023-01-14 | This one was written and produced by Ellis. Even though Chris Staecker already has a great video on it (youtube.com/watch?v=3KGjQ9diiY4) she wanted to make another one. There’s not much more to say about it, but by the mouth of two or three witnesses I suppose. Her Wolverine says “patent pending,” indicating that it was built between Dec 7, 1939 and June 3, 1941. In 1942 you could buy it for $1.95 in San Diego. It hurts her fingers.
De Kleine Rekenmeester (The Little Accountant) adding and counting machine Stephen Freeborn 2023-01-09 | My favorite part of this video was my 6-year-old shouting "7" in Dutch. Hope she's got it kind of right. JB Wolters book source: http://www.jetses.nl/j-b-wolters-boeken-met-illustraties-van-jetses/Batavia Map Source: bartelegallery.com/product/antique-map-of-batavia-by-salmon-1744Markes & Co. new factory image source: https://www.wkt-architekten.nrw/projekte/5/markes-gmbh-und-co-kgFairy Dust Sound Effect: Sound FX Beats
Dactyle Mechanical Calculator Stephen Freeborn 2022-12-25 | Merry Christmas. Brunsviga Image Source: https://americanhistory.si.edu/collections/search/object/nmah_690698Octave Rocehfort Image Source: WikipediaMarchant Image Source: Oakland Tribune, 10/11/1931
Add-O-Matic adding machine Stephen Freeborn 2022-11-17 | This Add-O-Matic is from 1947. It is rather large for how limited its function is.
Add-A-Matic adding machine Stephen Freeborn 2022-11-01 | This is a short video for a decidedly ok device.Mick-A-Matic image source: EtsyPark-A-Matic image source: Worthpoint
Mechanical Accountant adding machine Stephen Freeborn 2022-10-24 | This Mechanical Accountant has 3 patent dates on them. One of which, December 12, 1911, is a patent that I can't find. There are no patent numbers. If you know which it is, let me know.
Alpina Universal Calculator Stephen Freeborn 2022-09-28 | My assistants are "very fashion girls." I wish I would have kept the original video demonstrating the terrible case that failed right as I was demonstrating how it could fail. I was just sick over it. I felt lucky to find another but felt like I didn't really deserve it as I was such a bad steward of the my first one. Chris Vandevel's Alpina Repair: http://www.crisvandevel.de/alp3.htmRadial/Axial Image: Chargedevs.comI can't remember from where I retrieved the Alpina typewriter image. If you have a reference, I'm happy to post it.
Webb Adder adding machine addendum Stephen Freeborn 2022-09-19 | I have two more Webb Adders (or rather one Webb and one Lightning) that I didn't include on my first video. The Webb with the third register deserves some screen time.
Clary Model 169 adding machine Stephen Freeborn 2022-09-10 | I bet Clarys were all over the place in the 40s, 50s and 60s. My lovely assistants were able to help just before bedtime.
Conto adding machine Stephen Freeborn 2022-08-28 | The Conto was made from about 1905 until 1932, and went through 3 makers in that time.Jaap Scherphius’ webpage is a good source of info on the Conto: jaapsch.net/mechcalc/conto.htmModel C image source: Christie’s
Adix adding machine Stephen Freeborn 2022-08-11 | My lovely assistants started school today, so I was on my own for this one.Josef Benedikt Pallweber image source: lifeonthewrist.comCerta image source: catawiki.comRapid image source: rechnerlexikon.deEagle Adding Machine image source: American Exporter Vol 59, page 109, 1907Bordt Adding Machine image source: rechnerlexikon.deKuli image source: lot-search.comDiera image source: rechnerlexikon.deSummograph image source: rechnerlexikon.de
