| 摘要 |
1,258,149. Percussive tools. P. CUCCIATI. 4 Dec., 1969 [14 May, 1969], No. 59391/69. Heading B4C. [Also in Division F2] A device for reciprocating diametrically opposed percussion members 20 in guides 22 which are secured to the frame of a percussion tool, comprises eccentric weights 10 mounted on a shaft 12 which is supported for rotation in a body 16 by bearings 14 and a flange 26 radially projecting from the shaft for defining a slit 40 through which lubricant can pass from a chamber 24 to the bearings 14. The lubricant is fed into the chamber 24 through a bore 30 in the shaft and a bore 28 in the flange. The shaft 12 is continuously rotated by a motor and this is transmitted to the eccentric weights which cause a reciprocating motion. Each time the motion of the device is reversed during reciprocation, lubricant is thrown against the periphery of the flange and some passes through the slit 40 to the bearings 14. |
