US Patent: 107,195
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| Improvement in sawing-machine
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Patentee:
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| John T. Plass (exact or similar names) - New York, NY |
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Patent Dates:
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| Granted: |
Sep. 06, 1870 |
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Jeff Joslin
Vintage Machinery entry for J. T. & R. H. Plass
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Description: |
| "In band-saw machines, as heretofore constructed, the saw has been placed outside of the frame and column which support the driving parts, thereby exposing the saws to injury from handling lumber about them, also rendering them extremely dangerous to the operator, whether from breakage or unsound saw, or by the saw sliding off the upper pulley while in motion, and falling upon the operator, from which many serious accidents have occurred."... The invention consists in such a construction of the frame and column of the machine, and arrangement in relation thereto of the upper and lower wheels that carry the saw, as that the saw is made to run upward inside the column, under the top arch of the frame, over the upper or tension pulley, that is boxed in at the sides under inclosure, by a gate, to facilitate change of saws, and down inside the front portion of the frame, and behind the guide-bar, which is made vertically adjustable to any required height from the table to suit different thickness of work; and in provision, as regards safety, the invention includes a flanged construction of such adjustable guide-bar." |
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