US Patent: 1,765,316
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| Metal-Sawing Machine
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Patentees:
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| John S. Toohey (exact or similar names) - Racine, Racine County, WI |
| Malcolm E. Erskine (exact or similar names) - Racine, Racine County, WI |
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Patent Dates:
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| Applied: |
Sep. 01, 1926 |
| Granted: |
Jun. 17, 1930 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Racine Tool & Machine Co.
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Description: |
| Abstract:
This invention relates to metal sawing machines of the hack saw type, in which the saw carrying. yoke receives reciprocation in an approximately horizontal direction, with said yoke with the frame on which it is guided pivotally mounted on the machine frame so as to be capable of a swinging movement in a vertical direction and permit the downward movement of the saw blade as the sawing operation progresses, as well as an upward movement of the saw carrying yoke and its guide frame, out of the way, with a completion of one sawing operation, and a subsequent resetting of the parts for a succeeding operation and the present improvement has for its objects To provide a commercially practical structural formation and combination of parts, whereby the saw blade is positively fed into the work during the entire active or cutting stroke of the saw blade, with the construction admitting of the automatic raising of the saw blade clear of such work during the return or inactive stroke of the saw blade.
Claim:
In combination a metal sawing machine, saw blade, a movable supporting means for said saw blade, means for importing reciprocation to the saw blade in relation to said supporting means, means for imparting continuous and unyielding downward movement 15-:o said supporting means and saw blade during the entire cutting stroke of the saw blade, the same comprising a screw shaft, manually adjustable automatic means for~ imparting intermittent rotation to said screw shaft, a head encircling said screw shaft, a pair of split nut members associated with said head and haying eccentrically formed outer sides, an oscillatory support associated with the screw shaft, opposed members on said support in engagement with the eccentric sides of said nut members, manual means for imparting movement to said oscillatory support, and a link connection extending from said head to the aforesaid supporting means. |
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