초록 ▼

With a lifting and depositing device for portable box-like articles, in order to be able to operate their rack and pinion jacks manually and with ease by crank assemblies, each crank assembly has a haft-like crankcase, which has at one end a rotatable crankshaft and at the other end a rotatable driv

With a lifting and depositing device for portable box-like articles, in order to be able to operate their rack and pinion jacks manually and with ease by crank assemblies, each crank assembly has a haft-like crankcase, which has at one end a rotatable crankshaft and at the other end a rotatable drive shaft, which can be connected with an adjacent rack and pinion jack having a winch housing. The crankshaft and drive shaft are operatively connected with each other so that the latter is driven by the former. The crankcase can be connected with an adjacent winch housing and be pivoted into different work positions as well as fixed in such positions on the winch housing. Thus, the operation of the rack and pinion jacks is especially simplified in their top and bottom end positions on the uprights of the lifting and depositing device.

대표청구항 ▼

Manual crank assembly for winches, especially for rack and pinion jacks of a lifting and depositing device for a portable box-like article, in which the rack and pinion jacks are connectable to the corners of the article and have spur racks provided on uprights thereof, each rack and pinion jack hav

Manual crank assembly for winches, especially for rack and pinion jacks of a lifting and depositing device for a portable box-like article, in which the rack and pinion jacks are connectable to the corners of the article and have spur racks provided on uprights thereof, each rack and pinion jack having gear means in engagement with the rack to enable it to be raised and lowered along its upright, characterized in that: (a) the manual crank assembly has a haft-like crankcase, which at one end has a crankshaft rotatably mounted thereon and at the other end has a first drive shaft rotatably mounted thereon, said drive shaft having means for releasably connecting it to the gear means of the adjacent rack and pinion jack, and (b) means operatively connecting the crankshaft with the drive shaft so that rotation of the crankshaft will cause rotation of the drive shaft, each jack having a winch housing and characterized in that the crankcase and each winch housing are provided with clutch means (38, 34) to enable the crankcase to be connected to a winch housing in different work positions.