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Title: |
1903 Article-Luke & Spencer, Ltd., Sharpening Saws Having Straight Teeth |
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Source: |
Emery Grinding Machinery, 1903, pg. 161 |
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Insert Date: |
11/7/2015 5:58:17 PM |
Automatic Saw sharpening. — The most evident advantages of the modern automatic saw sharpening machine over the old practice of hand filing are that the sawyer can always have a number of well-sharpened saws ready for use, so that he need never leave his saw frame idle while he is sharpening his saw; the wear of the emery wheels is much less costly than that of files; and the teeth are always uniform in pitch and shape. The result is that for the same amount of power and of time much more work is produced, less timber is wasted, and the saws last longer. The saving thus effected in a large concern covers the cost of the saw sharpening machinery in a very short time.
The Schmaltz Patent Automatic Saw Sharpening Machines (figs. 129 to 134) have all these advantages, and can be readily worked by any intelligent workman after a little training. All the adjustments can be made whilst the saw is being sharpened.
Special provision has been made against the wearing out of the working parts by the emery dust, the motion being transmitted by hardened steel eccentrics working automatically in contact with steel rollers, while the dust is at once got rid of by a dust guard and an exhaust fan with air pipes.
The machines are specially adapted for automatically sharpening circular, frame, and band saws as used in saw-mills and by wood-workers generally, and any desired angle may be obtained so as to adapt the saws for cutting the particular kind of wood under treatment. The machine shown in fig. 129 sharpens circular saws; that in fig. 130 frame saws; that on fig. 131 woodcutting saws with straight teeth, as also teeth like those seen in the small figure used on the American Log Band Saw Machine: they will accurately sharpen 80 to 100 teeth per minute. |
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1903 Luke & Spencer, Ltd., Sharpening Saws Having Straight Teeth
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