WHY A SAW IS TAPERED
The usual hand-saws intended for general work always have a tapering blade, the amount of tapoi varying according to the size of the saw. The purpose of this is to lesson the weight of the saw and give it a proper balance. Were it made so that the back and. frout of the blade were parallel the saw would be very difficult and •awkward to operate, and much more energy would be necessary to nse it. It will be noticed from old Egyptian pictures that thousands of years ago the saws then in use were tapered, and even those made of * flint that have come down to us Trcm the Stone Age were also tapered. An improvement has. been effected in modern times by Henry Disston, the famous American saw-maker, who, in 1874, invented the skewbacH, or curved back, which still further reduced the weight and improved the balance. All modern handsaws, except those made and used by .the Japanese, cut on the push, that is, the stroke is made in a direction away from the user. Japanese saws cut while being drawn toward the user.
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Bibliographic details
New Zealand Times, Volume LII, Issue 12193, 18 July 1925, Page 16
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191WHY A SAW IS TAPERED New Zealand Times, Volume LII, Issue 12193, 18 July 1925, Page 16
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