| 摘要 |
PCT No. PCT/DE86/00203 Sec. 371 Date Feb. 11, 1987 Sec. 102(e) Date Feb. 11, 1987 PCT Filed May 14, 1986 PCT Pub. No. WO86/07424 PCT Pub. Date Dec. 18, 1986.A stepping mechanism comprises a toothed wheel and a shifting member which shifts toothed wheel by a tooth pitch. The movement plane of the shifting member extends at a right angle to that of the toothed wheel. A two-armed shifting pawl which is supported on a reciprocating slide so as to be swivelable and has a tooth guiding surface, serves as the shifting member and is inclined with respect to the movement direction of the slide and is switched over to the opposite inclination after every shifting cycle.
|
