device foer to repeated hoeja and saenka foeremaal up and down in a uppaat oeppet space

摘要

The first scissors leg (14) is provided with a lower end which is rotatably fixed (25) in the lower part of the space, and the second scissors leg (13) has a roller component (27) at its lower end running on a horizontal track (4) in the lower part of the space. The first scissor leg has an upper end to which a lower end of a first scissors leg (11) in a second scissors mechanism (11, 12) is rotatably connected (15), and the second scissors leg in the first mechanism has an upper end with which is connected a lower end of a second scissors leg (12) in the second mechanism. Either the first or second scissors leg (11, 12) of the second mechanism is provided with a roller component (18) which runs on a horizontal track (22) in the part of the device (19) which supports the object. Force-producing components (28) raise the part of the device supporting the object.