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Platinum Boat: Cut from Foil and Bent over a Brass Former (Blair, 1888)
A small trough of platinum foil that carries a sample into a combustion tube. Andrew Blair (1888): "This boat is made by cutting a piece of platinum-foil in the shape shown in Fig. 65, and bending it up over a brass former into the shape shown in Fig. 64."
His pattern is 3.5 long, 1.3 wide at one end and 1.07 at the other, with tabs at each end; the figure does not mark the units. Foil thickness and the former are not given.
Source: A. A. Blair, The Chemical Analysis of Iron (1888), p. 129. Picture: Figs. 64-65.
Principiante
Unknown
Istruzioni
1
1
Read Blair
Read Blair
"This boat is made by cutting a piece of platinum-foil in the shape shown in Fig. 65, and bending it up over a brass former into the shape shown in Fig. 64."
2
2
Cut the blank
Cut the blank
Cut platinum foil to the pattern of Fig. 65: 3.5 long between the end tabs, 1.3 wide at one end tapering to 1.07 at the other, with a tab .5 wide at the wide end and .37 wide at the narrow end, each flanked by V-notches. The figure does not mark the units, and the foil thickness, and how the foil is made, are not given (unknown).
Materiali per questo passaggio:
Platino1 foilStrumenti necessari:
Cesoie da lattoniere
Metodo di formatura sconosciuto
Dimensioni sconosciute3
3
Bend it over the former
Bend it over the former
Bend the blank up over a brass former into the trough of Fig. 64, folding the end tabs up to close the ends. The shape of the former, and how it is made, are not given (ours: brass round bar as its stock).
Strumenti necessari:
Barra tonda di ottoneDimensioni sconosciute4
4
Use
Use
Blair opens out the sides to slide in a moist carbonaceous residue, bends them back into shape, dries the boat and contents at 100 °C, and pushes it into the porcelain or platinum tube to burn off the carbon.
Strumenti richiesti
4- Segnaposto
- Segnaposto
- Segnaposto
- Segnaposto
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