Abstract: A changeable speed gear attachment for bicycles. including the first gear for interconnection with the front sprocket of a standard bicycle, and a second gear for interconnection with the rear sprocket of a standard bicycle, is disclosed. Shifting means, comprising a plurality of gears and an associated shift lever and transmission cable, are further disclosed. The device may be mounted on the rear frame members of the bicycle without modification of the frame, and the device may be used with bicycles having either a standard chain transmission or a direct-drive chainless transmission.

Abstract: A liquid dispensing system comprising drum members each having an upper end wall in which a female connector member is permanently mounted with a suction tube extending from the female coupling member downwardly a lower end termination adjacent the lower end wall of the drum; a male connector member attached to the inlet of a small pump has a mating portion insertable in sealing relationship in the female coupling with rotary retaining structure on the male connector member maintaining the male connector member coupled to the female coupling. The arrangement permits the pump connected to the male coupling member to be easily attached and detached from the drum member.