Mechanical calculators: FACIT C1-13

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I purchased this machine at an online auction site in February 2011. It was in quite good condition, apart from the natural deterioration of some rubber fixtures. Apart from re-chrome plating the external levers, I kept its original look, including part of a sticker in the back from a maintenance shop in Belo Horizonte, Minas Gerais, Brazil. It's mechanism, however, was hardened by the deterioration of oils and greases used in its lubrication from back in the 1960s and possibly the 1970s. I did a complete disassembly, cleaning and reassembly, along with a (modern) lubrication, and the machine is back in its prime condition.

This machine was manufactured in about 1965 (ref, at FACIT's unit in Juiz de Fora, Minas Gerais, Brazil. Later machines had a plastic cover, but this one is in die-cast metal.

Have a mechanical calculator stored somewhere, and want to get rid of it? Send it to me!

Disassembly, cleaning and reassembly of a c.1965 FACIT C1-13 s/n B-82656

Disassembled parts

 Disassembled parts

Base plate and keyboard

 Base plate and keyboard

Right-hand side plate

 Right-hand side plate

Left-hand side plate

 Left-hand side plate

Division mechanims and carry lever detent bar

 Division mechanism and carry lever detent bar

Accumulator and counter registers

 Accumulator and counter registers

Pinwheel rotor installed

 Pinwheel rotor installed

Front view

 Front view

Carry rotor

 Carry rotor

Masks and indicators

 Masks and indicators

Finished

 Finished

Rear view

 Rear view

Bottom view

 Bottom view

More about this machine

Technical description

Rebuilding the FACIT C1-13

Operation

The evolution of FACIT calculators

Video: how pinwheel calculators work

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c1-13.txt ยท Last modified: 2013/02/18 14:02 by clodoveu
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