Jaap Scherphuis
The Mercedes-Euklid model 29 mechanical calculator
updated
For more information about this die, please visit my website:
jaapsch.net/stuff/zoblitz.htm
0:00 Introduction
0:52 History
1:46 Instructions
8:39 Serpentine
9:37 Carving
10:21 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:23 Input
1:13 Printing a ticket
2:07 Removing from the stand
2:29 Counter registers
3:33 Opening the case
4:05 Control cartridge
6:24 Ink roller
6:53 Setting the date
7:15 Print locking mechanism
8:04 Print cycle
9:20 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, history
1:06 Manual lever
1:36 Paper feed
1:53 Multi-function button
2:30 Entering numbers, clearing input
2:57 Addition
3:15 Totals and subtotals
4:05 Subtraction
4:25 Non-Add function
4:49 Button release
5:08 Repeat, multiplication
6:28 Ink ribbon
7:05 Negative totals
7:42 Serial number
8:11 Outro
For more information on this machine and others in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:51 Addition
1:16 Totals and subtotals
1:58 Subtraction
2:25 Negative totals
3:30 Non-add
3:55 Non-print
4:29 Repeat, multiplication
5:34 Recall
8:17 Crossbow logo
8:50 Opening the case
10:25 Printing mechanism
11:01 Subtraction mechanism
11:53 Non-print mechanism
12:40 Reassembling case
13:08 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:25 History
1:35 Entering numbers
2:00 Addition
2:16 Subtraction
2:50 Subtotals and totals
4:20 Symmetric keyboard
4:45 Multiplication
5:55 Step-O-Matic
6:54 Non-Add
7:14 Carriage
8:44 Addo-X 351
9:33 Ink ribbon
9:49 Power cord
11:06 Outro
For more information about this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:51 Addition
1:17 Total/Subtotal
2:05 Subtraction
2:39 Negative totals
3:09 Non-add
3:29 Clearing
3:38 Repetition/Multiplication
5:02 Ink ribbon
5:47 Opening case
7:30 Power cord
8:34 Inserting paper
9:26 Mechanism in action
10:59 Outro
For more information about this and other calculating machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:19 Addition
1:02 Clearing
1:32 Multiplication
2:23 Subtraction
3:28 Printing
6:20 Printing mechanism
8:06 History
8:34 Outro
For more information on this and other calculating machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:28 History
1:44 Addition
2:42 Subtraction
4:25 Clearing
4:48 Complementary numbers
5:48 Opening case
8:35 Mechanism
11:02 Outro
For more information about this machine and others in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
0:45 Addition
2:10 Clearing input, Non-add
2:51 Subtraction
3:55 Repeat, Multiplication
5:00 More history
5:59 Opening the case
7:29 Paper roll
7:55 Outro
For more information about this and other calculating machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:27 Addition
0:54 Clearing
1:22 History
1:41 Precise Developments Co.
2:54 E.C.A.
5:25 Tastee-Freez
7:01 Outro
Here is a link to @rubberswan's channel with Multo disassembly videos:
youtube.com/user/rubberswan/videos
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:30 History
1:01 Nice touches
1:38 Addition
1:48 Counter
2:24 Multiplication
3:06 Clearing
4:00 Seizing up
6:17 Further history
7:22 Outro
For more information about this machine and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:20 Input
0:40 Addition
0:55 (Sub)total
1:59 Non-add
2:24 Subtraction
2:50 Negative totals
3:31 Multiplication
4:50 Ink ribbon
6:20 Opening case
7:05 Outro
Main video demonstrating the Brunsviga 11S:
youtube.com/watch?v=1wtOBqjVHyA
For more information on this and the other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
Video of the mechanism:
youtube.com/watch?v=5unqPg0UtWY
For more information about this machine and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:21 History
1:32 Addition
2:13 Subtraction
2:30 Clearing
3:04 Multiplication
4:52 Division
6:20 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:17 Inputting numbers
0:43 Addition
0:55 Multiplication
1:37 Subtraction
1:47 Shortcut multiplication
2:19 Clearing
2:37 Counter direction
3:45 Division
6:47 Back Transfer
8:43 History
10:24 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:18 Addition
1:07 Clearing
1:55 Small multiplications
2:33 Subtraction
3:53 History
4:42 Outro
For more information about this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:31 Description
2:09 Multiplication, Division
5:18 Otis King
6:04 Carbic Limited
7:32 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:14 Columns for currency
1:11 Clearing
1:45 History
2:50 Opening the case
3:38 Carry mechanism
5:48 Outro
Errata: The first Felix was probably made in 1929, not 1928, and my Felix-M was probably made in 1976, not 1975.
For more information about this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:44 The design, addition
1:05 Clearing registers
1:57 Counter, subtraction
2:42 Input clearing
3:11 Reversing direction
4:10 History
5:28 Felix Dzerzhinsky
8:08 Outro
For more information about this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, Precisa 160
0:41 Precisa 364
1:42 Addition
2:15 Subtotal
2:46 Total
3:10 Subtraction
4:11 Non-add
4:45 Repeated addition
5:04 Clearing input
5:15 Repeated subtraction
6:14 Multiplication
7:08 Negative multiplication
7:36 Squaring
8:21 Shortcut multiplication
9:00 Repeated multiplication
10:45 Opening case
12:10 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:19 Unboxing
0:44 Description
1:10 Addition
2:00 Totals bar
2:25 Clearing
3:35 Mechanism
6:19 Patents
6:49 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
0:54 Input mechanism
1:32 Addition
2:15 Clearing
2:55 History
5:22 Outro
Errata: There are of course 20 shillings in a pound, not 19.
For more information about this machine and others in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:22 British currency
1:22 Error detection
2:47 Model 913!?
4:22 Model F or SF
4:55 Error on new model
6:00 Outro
For more information about this machine and others in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:26 History
0:59 Overshoot prevention
1:40 Error detection
2:31 Models
2:58 Multiplication
4:59 Division
9:50 Outro
I also have videos of the later Euklid model 29:
youtube.com/watch?v=aVFtFHLIrYM
Video showing the mechanism:
youtube.com/watch?v=nsUWe9KkR8A
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:21 Keyboard
1:00 Crank
1:31 Addition
2:30 Subtraction
3:12 Clearing
3:29 Multiplication
4:48 Decimal points
6:35 Automatic division
9:05 Serial number
9:44 Outro
Here is a previous video about the Victor series 6 and 7 adding machines:
youtube.com/watch?v=Zlh6DEHwe9k
For more information about this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
"Before electronic computers and calculators, there were mechanical calculating machines. The Comptometer was one of the most widely used calculating machines, used all around the world for almost 80 years. It quietly changed the world, yet is almost forgotten today."
This video was a practice run I made to see if I got the timing about right. The actual talk was filmed, and can be found here:
youtube.com/watch?v=Q2G-383ij8A
The powerpoint presentation can be found here:
jaapsch.net/g4g/index.htm
For more information about the Comptometer and the other mechanical calculators in my collection, visit my site:
jaapsch.net/mechcalc
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
3:05 Description
6:01 C. J. Root
8:00 Mechanism
10:06 Outro
Video of the Business and Master adders:
youtu.be/m3toHgmCZuk
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:53 Addition
1:33 Carry operation
2:14 Clearing
2:39 Scriptor attachments
6:52 Testimonials
7:22 Sirius ad
7:45 Guarantee
8:24 Scriptor instructions
8:52 Special offer
9:32 Instruction booklets
10:54 Ad for Electric Master
11:35 Receipt
12:04 Packing up
13:14 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
For more information about this and other calculators in my collection, please visit my website:
http://www.jaapsch.net/mechcalc
0:00 Introduction
1:14 Uses for double calculators
2:50 Description of the calculation, part 1
3:36 Doing the calculation, part 1
5:24 Description of the calculation, part 2
6:19 Clearing counter and input registers
7:07 Doing the calculation, part 2
9:43 Clearing the output registers
9:56 Manually setting the output registers
10:28 Outro
For more information an this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:24 What it is used for
0:54 Company history
3:21 How to operate it
3:45 Serial number
4:08 Production
4:39 Opening the machine
6:22 Mechanism
7:55 Repairs
9:23 Outro
Video of the Triumphator KA: youtu.be/OqqCV5xh3-A
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
For more information this and other calculators in my collection, please visit my website:
http://www.jaapsch.net/mechcalc
0:00 Introduction
0:33 Addition
1:35 Clearing
2:15 Subtraction
2:28 Multiply
3:17 Division
5:16 Precisa history
6:44 Serial number
7:02 Outro
Further research leads me to believe that this counter was made by Schäffer & Budenberg in Buckau.
For more information on this and the mechanical calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:48 Carry mechanism
1:12 Eccentric gear drive
1:57 Reset mechanism
2:23 History - Eduard Stalmann, Buckau
3:46 Outro
I apologise for the wandering focus of my camera.
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:37 Addition
1:08 Clearing
1:28 Semi-automatic multiplication
3:06 Subtraction
4:24 Automatic carriage shift
5:38 Automatic multiplication
8:14 Division
9:52 Aborting division
12:09 The NEG button
13:03 Outro
For more information this and other calculators in my collection, please visit my website:
http://www.jaapsch.net/mechcalc
0:00 Introduction
0:10 The box
0:58 Models
1:19 Stylus
1:37 Addition
2:14 Clearing
4:08 Subtraction
5:05 Outro
For more information on this calculator and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:20 Addition
0:46 Multiplication, shifting the carriage
2:11 Clearing
4:34 Back Transfer
5:25 Serial number
5:59 History, Emil Schubert
8:03 Models
9:29 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:32 Addition
1:30 Subtraction
1:55 Clearing
2:26 History
3:20 Magic Slate
4:15 Patents
4:40 Similar machines
5:09 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 History
0:20 Models
1:55 Addition
2:11 Counter
2:35 Clearing
3:09 Serial number
3:45 Colours
4:15 Further history
4:58 Outro
For more information about this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:29 Pinwheel
1:14 Carry mechanism
3:27 Latch
4:26 Input clearing mechanism
7:00 Counter increment mechanism
10:45 Counter carry mechanism
13:34 Back transfer mechanism
15:20 Input display mechanism
16:02 Outro
In 1875 Willgodt Odhner made the pinwheel calculator that was the ancestor of almost all pinwheel machines that came after it. He died in 1905, after which his sons took over his calculator production business. It was they who moved to Sweden when the business was taken over after the Russian revolution (NOTE: In the video erroneously imply that Willgodt moved to Sweden).
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:19 History
2:10 Addition
2:42 Subtraction
2:57 Clearing register and counter
3:07 Multiplication
4:17 Clearing input
5:25 Counter
6:13 Division
8:02 Main carry mechanism
9:27 Counter carry mechanism
10:13 Back transfer mechanism
11:36 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 History
1:02 Stand and stylus
1:18 How to use
2:50 Stand and stylus
3:35 Further history
4:02 Outro
Addimat video: youtube.com/watch?v=hIuxwschXg0
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 History
1:15 How to use
1:56 Carry mechanism
2:16 Clearing
2:34 History
3:22 Mechanism
6:13 Outro
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:18 Input mechanism
1:34 Addition, multiplication
2:48 History
6:41 Clearing
7:30 Division
9:54 Back transfer
11:44 Carriage release
12:30 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 History
1:50 Addition
2:24 Subtraction
2:42 Clearing
2:49 Multiplication
4:32 Division
6:53 Manual crank
7:32 Removing carriage
8:08 Serial number
8:34 Outro
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:16 Addition
0:41 Subtraction
1:03 Semi-automatic multiplication
2:04 Clearing
2:22 Division
3:42 Tabulation
4:55 Aborting division
6:25 Counter direction
7:00 Setting multiplier
8:06 Automatic multiplication
9:12 Carry mechanism
10:24 Split register
11:10 Decimal markers
11:40 Outro
I demonstrate the EOS in the following video: youtu.be/_bmuSqlPrL8
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction
0:39 Addition cycle
3:28 Subtraction cycle
5:11 Oscillating mechanism
5:40 Counter mechanism
7:07 Automatic input clearing
7:52 Clearing output register
8:17 Cam wheels
9:24 Outro
I show the mechanism of the EOS in another video: youtu.be/pWOyLou-uys
For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
1:28 Addition
2:58 Subtraction
3:21 Counter
3:50 Clearing
4:20 Shifting the carriage
5:39 Serial number
6:52 Outro