US Patent: 879,500
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| Band-saw-tensioning device
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Patentee:
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| Burt D. Stevens (exact or similar names) - Beloit, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 05, 1907 |
| Granted: |
Feb. 18, 1908 |
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Patent Pictures:
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1 | 2
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Jeff Joslin
Vintage Machinery entry for Berlin Machine Works
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Description: |
| The innovation here is to tension the blade purely by the action of a spring; previous mechanisms had used a weight, or a weight in combination with a spring. The reputed disadvantage of a mechanism using a weight is that if a piece of scrap gets between the wheel and the blade, the inertia of the weight prevents the mechanism from adjusting quickly enough and the blade breaks as a result. |
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