GB Patent: GB-550,219
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Improvements relating to clutch mechanism of the boring or drilling spindles of horizontal boring or drilling machines
Claw clutches
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Patentee:
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| Henry Ward Lionel Kearns (exact or similar names) - Broadheath, Manchester, England |
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Patent Dates:
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| Applied: |
May 20, 1942 |
| Granted: |
Dec. 29, 1942 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for H. W. Kearns & Co., Ltd.
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Description: |
| In a horizontal boring, drilling, facing and milling machine in which the spindle d is driven either directly by a belt pulley e or indirectly through a change speed train driving the sleeve g, the spindle is brought to the speed of the pulley or sleeve prior to the engagement of claw clutches e' or g' by a friction clutch e2 or g2. The friction clutch sleeve j is supported clear of the spindle by rings n', n2 keyed to the sleeve by the shouldered ends of the feather key m that transmits drive to the spindle. Axial feed of the spindle is thus prevented from shifting the sleeve j. The claw clutch sleeve i is splined to the sleeve j at k and carries a spring V-end bolt l that engages a notch in the key k. When the sleeve i is moved by a yoke engaging the groove i3 the appropriate friction clutch first brings the spindle to speed and then the bolt l yields permitting the engagement of the dog clutch." |
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