GB Patent: GB-558,254
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| Improvements in or Relating to Gear Cutters
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Patentee:
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| Michigan Tool Co. (exact or similar names) - Detroit, Wayne County, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 04, 1941 |
| Granted: |
Dec. 29, 1943 |
Espacenet patent
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Joel Havens
"Vintage Machinery" entry for Michigan Tool Co.
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Description: |
| Abstract:
A cutter for use in cutting helical gears comprises an elongated member 12 of right-angled trapezoid form with a cutting end 22 conforming to the shape of the entire intercentral space between the teeth to be cut. The edge 18 of the cutter, Fig. 5, is at right angles to the sides 14, 16 and the angle A, Fig. 5, is the pitch helix angle, or, preferably, the outside helix angle of the gear to be cut. The surfaces of the end 22 also follow the work helix and the face 26 is flat and is ground normal to the helix and at a predetermined angle to the edge 24 to provide rake. The end away from the cutting edge has an inclined slot 34 adapted to be engaged by a conical member to feed the cutters to the work. In a modification, Fig. 9, the cutter consists of two parts interlocked by a projection 40.
This is the same as U. S. Patent #2,374,890. |
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