Abstract: Disclosed is a battery charger having a rack fastened in a casing to hold two horizontal battery-charging contacts and two vertical battery-charging contacts for charging rechargeable batteries of different types, a horizontal sliding frame controlled by a screw to hold down the battery to be charged. The pitch of the horizontal battery-charging contacts as well as the vertical battery-charging contacts is adjustable. The elevation of the horizontal battery-charging contacts is also adjustable.

Abstract: A battery charger comprising an indicator unit which has control switch and indicator lamps, and three charging slots for charging a variety of batteries of different size and specification, wherein one of the charging slots has vertical guide rails for holding the battery inserted therein and positive and negative charging pins and charging terminals, each of the other two charging slots has plate springs and wire spring for holding different size of battery in charging position and charging pins or charging strip springs for charging the battery inserted therein.

Abstract: An ink ribbon inking device, which utilizes a motor to carry an eccentric shaft to push the core of an inking pen to move up and down permitting the ink contained in such an inking pen to intermittently flow downward, and simultaneously to drive two ink ribbon driving shafts to carry the ink ribbon of an ink ribbon cartridge to rotate. The ink ribbon of the ink ribbon cartridge is squeezed in between the eccentric shaft and the inking pen so that it is smeared with the ink during reciprocating motion of the core of the inking pen.