| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil feeding device for a shuttle of a sewing machine, capable of expanding the adjustable width of the quantity of lubricant fed to the shuttle of the sewing machine. SOLUTION: The oil feeding device 20 comprises an oil tank 21 for storing the lubricant, an oil feeding channel 22 for guiding the lubricant from the oil tank 21 to a shuttle shaft base 33, an oil feeding pump 27 for feeding the lubricant from the oil tank 21 to the shuttle shaft base 33 via the oil feeding channel 22, a reflux channel 23 for guiding almost all the lubricant fed to a shuttle mechanism 30 to the oil tank 21, and a reflux pump 28 for feeding the lubricant from the shuttle mechanism 20 to the oil tank 21 via the reflux channel 23. The oil feeding device 20 also has an oil discharging channel 24 for guiding a part of the lubricant from the downstream side from the oil feeding pump 27 in the oil feeding channel 22 to the oil tank 21, a distributor 25 for distributing the lubricant carried from the oil feeding pump 27 to the shuttle shaft base 33 side and to the oil tank 21 side, and a flow rate adjusting screw 26 as a flow rate-adjusting means for adjusting the flow rate of the lubricant to the oil discharging channel 24. COPYRIGHT: (C)2006,JPO&NCIPI
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