GB Patent: GB-191,501,774
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| Improvements in Apparatus for Electrically Operating Planing Machines and the Like Reciprocating Tools
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Patentee:
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| William Hargreaves (exact or similar names) - Chorlton-cum-Hardy, Lancashire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 04, 1915 |
| Granted: |
Feb. 04, 1916 |
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Patent Pictures:
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Espacenet patent
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Joel Havens
"Vintage Machinery" entry for Lancashire Dynamo & Motor Co., Ltd.
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Description: |
| Abstract:
Systems for controlling reciprocating motion.- Planing - machines and like reciprocating tools are driven through a pair of co-axial shafts one of which may be the armature shaft of an electric motor or is driven from such shaft. The co-axial shafts are connected by epicyclic gearing so controlled by electro-magnetic clutches that, for drive in one direction, the planet pinion carrier is held stationary, while for reverse, the gearing rotates as a solid whole. A friction clutch on the reversing-shaft operates a throw-over switch f<4> putting resistance into one clutch circuit f<1> and cutting it out of the other g<1> to give light engagement during reversal and full grip for subsequent driving, thus avoiding shock. The tappet gear on the machine which controls the clutch switches S<1>, either directly or through other switches and solenoids, is arranged also to throw a pair of manually adjustable resistances Q, R alternately in and out of the shunt circuit of the motor thus providing for varying the speeds of the cut and reverse. |
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