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Title: |
1894 Article-Berry & Orton Co., Automatic Saw-Dressing Machine |
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Source: |
Industry Magazine, Mar 1894, pg. 172 |
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Insert Date: |
12/7/2012 12:58:04 PM |
Saw-sharpening machines operating with grinding wheels have been a subject of copious invention in Europe, especially in England, for the reason, no doubt, that circular saw-benches are much more extensively employed there than in this country, and the nature of their work demands more careful dressing or sharpening.
The difference between a circular saw that is '' round'' and sharp, and one that is "ragged" and dull, is so great that no one but a practical sawyer can understand it. A round saw, or one that is true enough so all of its teeth will cut equally, is an exception, and, when filed by hand in the common way, does not exist. By machine sharpening this end is attained, and in a much more rapid manner than by filing, and at much less expense.
Machines for the purpose are much varied in construction, the present being one of the newest and most compact designs that has appeared, and is so well shown in the drawing that description is not required. One difference from most of the European machines is in the grinding wheel moving " across" the saw instead of toward its center, and in the positive crank-motion for operating the wheel, so the machine is wholly automatic, the saw being turned at each stroke by means of a pawl.
These machines are especially useful for iron-cutting saws, one of which is shown on the machine in the drawing. Such saws operate badly and slowly unless perfectly round, and machine-sharpening is almost indispensable. The machine shown will operate on saws to 36 inches diameter, and will sharpen 56 teeth per minute. |
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1894 Berry & Orton Co., Automatic Saw-Dressing Machine
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