Abstract: There can be provided a button type alkaline battery in which resistance to leakage of the electrolysis solution is improved. A button type alkaline battery includes a positive electrode can (1), a negative electrode cup (3) and a gasket (6). The negative electrode cup (3) has a cuff portion (7). The cuff portion (7) is inclined toward a center of a battery at an angle ranging from 5.degree. to 20.degree..

Abstract: This disclosure relates to a roof plate assembly comprising a plurality of individual roof plates interlocked with one another by means of a plurality of anchoring pieces, and fastened to a batten or the like. The anchoring pieces connect the trailing end of each roof plate with the leading end of the following roof plate. The anchoring pieces and the roof plates are interlocked with one another by means of bent stop portions having portions spaced from one another with sufficient clearance to absorb dimensional inaccuracies during assembly. Each roof plate further includes a suspending piece which depends from its leading end and abuts the trailing end of the preceding roof plate to provide, in combination with the anchoring piece, a double connection at the trailing end of each roof plate.