Site.BlochSchnellkalkulator1919 History
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16 June 2012
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The "Schnellkalulator System Bloch" is an unusual device first patented in 1919 and produced over the next few years. It utilises an approach to evaluating mathematical formulae known as "nomography". This is a graphical technique which, having established several parameters in the equation allows one to evaluate the final result.
This particular device quite cleverly implements nomographic principles in a mechanical apparatus to calculate the cutting time required required in turning metal in a machine tool by evaluating the formula involved. A paper [[http://sliderules.lovett.com/cookiedev/extendeddisplayarticle.cgi?match=wernerh.rudowskixxxjournaloftheoughtredsocietyvol.14,no.1,spring,2005pg46.1.jpg|The Schnellkalulator System Bloch]] explaining how this is done was published by Werner H. Rudowski in the Journal of the Oughtred Society, vol. 14, no. 1, spring 2005, pp. 46-52. Very few of these devices seem to have survived.
15 June 2012
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This particular device quite cleverly implements nomographic principles in a mechanical apparatus to calculate the cutting time required required in turning metal in a machine tool by evaluating the formula involved. A paper [[http://sliderules.lovett.com/cookiedev/extendeddisplayarticle.cgi?match=wernerh.rudowskixxxjournaloftheoughtredsocietyvol.14,no.1,spring,2005pg46.1.jpg|The Schnellkalulator System Bloch]] explaining how this is done was published by Werner H. Rudowski in the Journal of the Oughtred Society, vol. 14, no. 1, spring 2005, pp. 46-52.
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This particular device quite cleverly implements nomographic principles in a mechanical apparatus to calculate the cutting time required required in turning metal in a machine tool by evaluating the formula involved. A paper [[http://sliderules.lovett.com/cookiedev/extendeddisplayarticle.cgi?match=wernerh.rudowskixxxjournaloftheoughtredsocietyvol.14,no.1,spring,2005pg46.1.jpg|The Schnellkalulator System Bloch]] explaining how this is done was published by Werner H. Rudowski in the Journal of the Oughtred Society, vol. 14, no. 1, spring 2005, pp. 46-52. Very few of these devices seem to have survived.
14 June 2012
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Added lines 3-5:
The "Schnellkalulator System Bloch" is an unusual device first patented in 1919 and produced over the next few years. It utilises an approach to evaluating mathematical formulae known as "nomography". This is a graphical technique which, having established several parameters in the equation allows one to evaluate the final result.
This particular device quite cleverly implements nomographic principles in a mechanical apparatus to calculate the cutting time required required in turning metal in a machine tool by evaluating the formula involved. A paper [[http://sliderules.lovett.com/cookiedev/extendeddisplayarticle.cgi?match=wernerh.rudowskixxxjournaloftheoughtredsocietyvol.14,no.1,spring,2005pg46.1.jpg|The Schnellkalulator System Bloch]] explaining how this is done was published by Werner H. Rudowski in the Journal of the Oughtred Society, vol. 14, no. 1, spring 2005, pp. 46-52.
This particular device quite cleverly implements nomographic principles in a mechanical apparatus to calculate the cutting time required required in turning metal in a machine tool by evaluating the formula involved. A paper [[http://sliderules.lovett.com/cookiedev/extendeddisplayarticle.cgi?match=wernerh.rudowskixxxjournaloftheoughtredsocietyvol.14,no.1,spring,2005pg46.1.jpg|The Schnellkalulator System Bloch]] explaining how this is done was published by Werner H. Rudowski in the Journal of the Oughtred Society, vol. 14, no. 1, spring 2005, pp. 46-52.