GB Patent: GB-191,504,972
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| Improvements in Machines for Repairing Saws.
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Patentee:
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| Harry W. Durham (exact or similar names) - Newark-on-Trent, Nottinghamshire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 31, 1915 |
| Granted: |
Jul. 15, 1915 |
Espacenet patent
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Joel Havens
"Vintage Machinery" entry for A. Ransome & Co., Ltd.
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Description: |
| Abstract:
In a machine for repairing saws having a milling-cutter for grooving the blade over a crack or other defect and for shaping a corresponding patching-piece to be subsequently silver-soldered thereto, the cutter spindle is mounted eccentrically in a rotatable support, so as to travel slowly in a circular path in the first operation, and is then fixed to cut the patching-piece, which is carried by a rotary arm. The saw blade D is clamped on a table M, which is vertically adjustable on the feet of the frame by inclined surfaces and is acted on by a milling-cutter A carried by a spindle B, which is mounted in a support K rotatable in the framing L. The cutter spindle is driven by gearing C, F from a hand or power operated pulley G. The rotation of the support is effected by an epicyclic train consisting of pinions Q, R on the pulley engaging respectively a wheel P secured to the framing by a pawl W through spur gear U, T, and a wheel 0 secured to the support. After a curved groove has been cut in the saw, a patching-piece Y is secured by clamps to a lever X pivoted on the shaft of the wheel U, the pawl is released, and the support rotated until it is in proximity with the work, whereupon it is secured to the frame by a screw AA, the position being adjusted by screws BB. In this case, the wheel 0 is a fixture, and the lever X is thus swung on its pivot so that a convex surface is cut on the work. |
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