Backspace does not erase

The Blickensderfer 5 typewriter is a brilliant machine. It also has an almost endless set of adjustments to make it work. One of the issues ...

The Pony B calculator was missing the distinctive Marchant brass nameplate.  As this is a very visible part of the 'look' of a March...

After refurbishing a Model B Comptometer and playing with the Blickensderfer, returning to the Marchant Pony B Special calculator. The Pony ...

Starting with typewheel 407... ....and then swapped to a Blackletter wheel. To make it easier to see how the ink is spread over a typewheel,...

With all the bits cleaned, it's fairly quick and straightforward to put the Comptometer model B mechanism  into the case again. The pho...

This Comptometer Model B mechanism had collected an amazing amount of dust and debris. Amazing, because there are not many openings for dus...