The File in History a Description of the Development of the File From the Earli

Cover The File in History a Description of the Development of the File From the Earli
The File in History a Description of the Development of the File From the Earli
Inc Philadelphia Henry Disston Sons
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He also wrote a very slightly later times, however, of iron interesting description of file-mak- tools is shown by the discoveries at Pompeii, where the only tools of the present time which the black- smith lacked were the vise and metal-cutting saw. His files were ing in Germany about the end of the eleventh century. Among the simpler forms of files which he men- tions are those made of soft iron, which were afterward hardened.
crude, and it is presumed were riot After the file had been forged
... to [16] The File In History the desired form it was made smooth by a plane and then pro- vided with grooves and teeth. He describes the hardening process very clearly, and, curiously enough, wanted to discover how the work was done. Numerous theories were advanced, one of which affirms that the iron was cast, "and then treated with a file. " This shows that the Fig. 16. Half-round flies unearthed in London. Period unknown, on the order of rasps.
They are all it does not differ greatly from some present-day methods.


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