GB Patent: GB-126,931
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| Improvements in and relating to Gear Cutting, Slotting and like Machines
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Patentees:
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| James H. Melloy (exact or similar names) - Manchester, Lancaster County, England |
| Willie Owen (exact or similar names) - Manchester, Lancaster County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 20, 1919 |
| Granted: |
May 22, 1919 |
Espacenet patent
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Joel Havens
"Vintage Machinery" entry for William Muir & Co.
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Description: |
| Abstract:
In a machine for cutting spur and spiral gears by a reciprocating generating cutter, the indexing motion is performed instantly by dropping the work back at the end of the rolling motion a pitch or more than one pitch during the interval between the cutter leaving the work and re-entering it, in order to avoid any pause in the cutting. The rack-cutter E is carried by a vertically reciprocating slide A. and the work is carried by a table J, which is rotated on a cross-slide H<1>, mounted on an adjustable slide H. The cross-slide H<1> is traversed during cutting by a scroll cam Q on a shaft P acting against a similar fixed cam Q<1> on the slide H<1>, the pitch of the cam Q being equal to or a multiple of the pitch of the gear being operated on. On completion of a revolution of the shaft P, the cross-slide H' is pressed back by spirngs S or other means a distance equal to the pitch of the cam and cutting automatically recommences. The table J is rotated by worm and spur gear from the shaft P, which is rotated by gear L' from the shaft L. |
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