OILER OF OILING DEVICE FOR TROLLEY LINE

PURPOSE:To uniformly oil a trolley line without causing bliding in an oiling hole even if air temperature changes by providing an oiling member having the oiling hole in a tube belonging thereto and having a small coefficient of thermal expansion while providing an interval member opposing, spaced in a prescribed interval, to the hole. CONSTITUTION:Oil passages 9a are bored in a tube 9 at every fastening positions of the tube, and the oil passages 9a are respectively covered with oiling members 24. The oiling member 24 is formed by metal having a smaller coefficient of thermal expansion but higher rigidity than those of the tube 9. The above member has a cylindrical part 25 for covering an outer circumference of the tube 9 therewith and blocking the oil passages 9a and a flange part 26. A cylindrical space partitioned by the oiling member 24, a partition member 60, and a flange part 26 forms an oil reservoir 61, in which oil is stored at all times irrespective of an oiling or non-oiling period. Since an oiling hole 25a for supplying the oil into the trolley line 4 is bored in the metal oiling member 24, dust from the outside sticks to the surface of the oil and does not reach the oiling hole 25a without exerting a bad influence thereon even if the air temperature and a mounting state change.