US Patent: 81,309
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| Improvement in engine-lathe
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Patentee:
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| Squire Teal (exact or similar names) - Rochester, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Aug. 18, 1868 |
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Patent Pictures:
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Joel Havens
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Description: |
| William S Loughborough - patent attorney
Of tentative interest because a William Teal from Rochester made woodworking machinery. Squire Teal was formerly from Yorkshire, England This patent is for a lathe attachment for tapering or cutting irregular forms with a pattern.
The object of this device is to turn metal shafts tapering, or in irregular forms, without changing the centre of the tail-block of common engine-lathes. The operation is as follows: The metal to be turned is put into the lathe in any known manner. The pattern-plate having the groove of the desired shape is bolted on the bracket H. The guide-bar B is so arranged that the guide-pin E is fastened on it four times the distance from the stud x that the stud is from the pivot F, and the tail-block set so that the guide-pin E will enter the rear end of the groove of the pattern-plate. The set-screw v in the journal-box K is loosened, which allows the transverse screw and the tool-holder A, to which it is attached, to move transversely without turning the handle J. The tool-holder A being set in motion as it travels along, the guide-bar is moved by the guide-pin E travelling in the groove of the pattern-plate, gives the desired shape to the material being turned. The part a of the guide-bar B, being made transversely adjustable by the slots in the bent part of a, and the slots in the angle-iron F, allows the tool-rest to be moved transversely to suit different sized pulleys or pieces of iron being turned. There maybe a groove in the upper face, each side of the slot e, to receive corresponding ribs on the end of section 6 of the guide-bar B, to relieve the clamp-bolt e from side-draught. The bracket H being adjustable longitudinally aids in-arranging the required distance between the guide pin B and pin x for different-length shafts. By moving out the screw/until its collar comes against the journal-box K, and turning the set-screw v, it fastens the sleeve r, and taking off the guide-bar B, the lathe is then used in the ordinary way. It might be desirable to place the attachment on the rear side of the lathe.
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