US Patent: 73,830
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| Turning Curved Forms
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Patentee:
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| Walter Payton (exact or similar names) - London, Middlesex, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jan. 28, 1868 |
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Joel Havens
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Description: |
| My improvements relate to apparatus by which the correct cutting or planing of curved forms of progressively varying radii is facilitated, and when two of such forms are required to work together, by which their correct relative forms may be secured. But that the invention may be fully understood, I will, by the aid of the accompanying drawings, proceed to describe means pursued by me in carrying the same into effect. In order correctly to out or form such vanes, I employ the following apparatus: The vanes of each axis are placed upon separate revolving bearings, between which is placed a slide-rest with supports for cutting-tools capable of adjustment. Upon each of these revolving bearings is applied a toothed wheel, formed with a projecting edge or rim, each of which is taken into by a separate click or driver; and each of these clicks or drivers is carried by a separate arm from a separate hollow axis, each carrying a toothed wheel. Each of these hollow axes encloses a revolving bearing, which bearings are geared together, and the teeth of one toothed wheel of each hollow axis gear into those of the other hollow axis, whilst the teeth, of the other toothed wheel of each axis take into the teeth of racks in a reciprocating frame, in the to-and-fro motion of which an intermittent rotary motion is communicated to the rotary bearings, and the vanes carried thereby. Stops hold the parts of the revolving bearings during the return motion. This reciprocating frame has also applied to it an inclined bar, which is adjustable, and passes through or governs the motion of the support to the cutting-tools, to cause such support to travel to and fro in a transverse direction. The slide-rest is adjustable and thus whilst one cutter is cutting that portion of a vane nearest its axis, another cutter is cutting the portion of another vane furthest from its axis, and progressively changing. The support to the cutters on this slide-rest is also capable of progressive motion across each vane. |
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