| 摘要 |
PURPOSE:A depression for fitting an oil-feeding vessel is provided on the major part of the ring holder and an oil-holding substance equipped with an oiling thread is fitted to the bottom and an oil-feeding vessel with an oiling hole opened on the bottom surface is placed on the substance, thus preventing oil stain caused by flying fibers sticking to oil-leaking places. CONSTITUTION:A depression for fitting a cartridge type oil-feeding tank 5 is provided on the major part of ring holder 3 and an oil-holding substance 4 such as fibrous material, felt, sponge, or sintered metal is fitted to the bottom. The oil- holding substance 4 is connected with one end of oil-feeding thread 11 leading to the oil-guiding groove on the ring. The cartridge type oil-feeding tank 7 is a tightly sealed vessel made of a plastic or light metal alloy or metal and has a oil-feeding hole 9 of 1-5mm. diameter on the bottom. |
