GB Patent: GB-658,492
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| Improvements relating to the control of electrically effected adjustments of horizontal boring machines
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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: |
Nov. 24, 1949 |
| Granted: |
Oct. 10, 1951 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for H. W. Kearns & Co., Ltd.
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Description: |
| "Adjustment of the spindle head or worktable of a horizontal boring machine is made by a three-phase motor j (not shown) to which A.C. current is supplied for coarse adjustments or which, to effect slow and then fine adjustments, is supplied with D:C. current under control of a slowly rotatable switch l, with which the motor runs in phase, the switch being rotatable continuously or step-by-step..." |
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