| 摘要 |
A pair of opposed bail stay members are frictionally mounted to the horizontal bar of a T-bar bail, with the stay members engaging the bail stud. The resultant assembly is inserted up through the central slot of the sweeper top and held in position by friction. The opposed stay members seal the top against penetration of dirt into the sweeper mechanism. The outer ends of the horizontal bail bar are received within slots formed in the end partitions of the sweeper sub-frame. The bail bar ends prevent inward movement of the partitions in the event the latter comes loose from the housing end walls. The opposed stay members form a channel for angular movement of the bail stud and with the channel being formed to provide at least one end detent and a central detent. The stay members are slightly flexible and the channel between detents is slightly narrower than the diameter of the bail stud. The detents themselves are dimensioned to be relatively free of the bail stud when the latter is in a detent position. |
