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c1-13_3 [2018/08/04 18:33] clodoveu created |
c1-13_3 [2024/08/06 13:14] (current) clodoveu |
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| - | ===== Mechanical calculators: FACIT C1-13 ===== | + | ===== Mechanical calculators: FACIT C1-13 (third machine) ===== |
| * [[etc|Back to Offline Hours]] | * [[etc|Back to Offline Hours]] | ||
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| * [[calc|Back to Mechanical Calculators]] | * [[calc|Back to Mechanical Calculators]] | ||
| - | My brother-in-law found this machine stored in a friend's offices and gave me as a birthday present. The machine's keyboard and the rotor advancement mechanism were locked, but the crank worked in its base position, and the counter and accumulator reset levers worked nicely. After opening it up, I found the locks that were frozen in place, cleaned and lubricated them, and the machine was running practically as new. Among my FACITs, this one was in the best state. Old lubrication still worked, and the machine runs smoothly and with a light touch. I'll do a more thorough cleaning and partial disassembly in the future, but so far it is unnecessary. I had to clean the digit wheels and some other superficial parts, since the old lubricant was quite dark. | + | My brother-in-law found this machine stored in a friend's offices and gave me for my birthday in 2018. The machine's keyboard and the rotor advancement mechanism were locked, but the crank worked in its base position, and the counter and accumulator reset levers worked nicely. After opening it up, I found the locks that were frozen in place, cleaned and lubricated them, and the machine was running practically as new. |
| - | This machine was manufactured in about 1967 ([[http://www.boselli.com.br/museu/Facit%20C1%20P.htm|ref]], at FACIT's unit in Juiz de Fora, Minas Gerais, Brazil. This one has a plastic cover, which probably used to be light gray (judging from the inside of the cover), but is now yellowish -- about the same color as my FACIT 10-04. | + | Among my FACITs, this one was in the best state. Old lubrication still worked, and the machine runs smoothly and with a light touch. I'll do a more thorough cleaning and partial disassembly in the future, but so far it is unnecessary. I had to clean the digit wheels and some other superficial parts, since the old lubricant was quite dark. |
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| + | There's a curious thing about this unit: the main crank handle does not match my other FACIT C1-13 machines from that time. It looks like the handle in my FACIT TK, but it is actually more similar to the crank handle in my Original Odhner 27, and the one in older two-color C1-13s ([[https://mathematicalcranks.files.wordpress.com/2013/04/facit-c1-13.jpg|like this one]]). I suppose maintenance has switched it for some reason. | ||
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| + | This machine was manufactured in about 1967 ([[http://www.boselli.com.br/museu/Facit%20C1%20P.htm|ref]], at FACIT's unit in Juiz de Fora, Minas Gerais, Brazil. This one has a plastic cover, which probably used to be light gray (judging from the inside of the cover), but is now yellowish from exposure to light -- about the same color as my FACIT 10-04. | ||
| **Have a mechanical calculator stored somewhere, and want to get rid of it? Send it to me!** | **Have a mechanical calculator stored somewhere, and want to get rid of it? Send it to me!** | ||
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| **FACIT C1-13 c. 1967 s/n B-128273** | **FACIT C1-13 c. 1967 s/n B-128273** | ||
| - | Disassembled parts | + | Inside |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0000.jpg | Disassembled parts}} | + | |
| - | + | ||
| - | Base plate and keyboard | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0019.jpg | Base plate and keyboard}} | + | |
| - | + | ||
| - | Right-hand side plate | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0022.jpg | Right-hand side plate}} | + | |
| - | + | ||
| - | Left-hand side plate | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0024.jpg | Left-hand side plate}} | + | |
| - | + | ||
| - | Division mechanims and carry lever detent bar | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0026.jpg | Division mechanism and carry lever detent bar}} | + | |
| - | + | ||
| - | Accumulator and counter registers | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0029.jpg | Accumulator and counter registers}} | + | |
| - | + | ||
| - | Pinwheel rotor installed | + | |
| - | + | ||
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0030.jpg | Pinwheel rotor installed}} | + | |
| - | + | ||
| - | Front view | + | |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0032.jpg | Front view}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_01.jpg | Inside}} |
| - | Carry rotor | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_02.jpg | Inside}} |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0033.jpg | Carry rotor}} | + | Plastic cover |
| - | Masks and indicators | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_03.jpg | Cover}} |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0034.jpg | Masks and indicators}} | + | Outside view |
| - | Finished | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_04.jpg | Outside left}} |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0037.jpg | Finished}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_05.jpg | Outside back}} |
| - | Rear view | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_06.jpg | Outside right}} |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0039.jpg | Rear view}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_07.jpg | Outside front}} |
| - | Bottom view | + | Bottom plate, serial number |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13/Small-0043.jpg | Bottom view}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/FACIT-C1-13C/Facit_c1_13_3_08.jpg | Bottom}} |
| **More about this machine** | **More about this machine** | ||
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| [[http://www.youtube.com/watch?v=YXMuJco8onQ | Video: how pinwheel calculators work]] | [[http://www.youtube.com/watch?v=YXMuJco8onQ | Video: how pinwheel calculators work]] | ||
| + | [[https://www.youtube.com/watch?v=o-PB3q3UknE | Video: restoration of a FACIT C1-13]] | ||
