Continuously width-adjustable trolley travelling winch

A traveling trolley assembly for hoisting appliances comprising:

• a first side frame bar spaced apart from a second frame bar;
• a running rail extending between said frame bars;
• a first wheel mounted on said first side frame bar and a second wheel mounted on said second side frame bar, said wheels rotating axially parallel to each other;
• a connecting column extending between said first frame bar and said second frame bar, said extending column being disposed at a location below said first and second wheels and having a longitudinal axis parallel to the axis of rotation of said first and second wheels;
• said frame bars each being formed with an opening for mounting on said column, said connecting column having a smooth cylindrical outer surface extending substantially the length thereof for permitting selected positioning of at least said first frame bar over said smooth cylindrical surface into predetermined spaced relation to said second frame bar;
• a threaded rod having a longitudinal axis and being supported between first and second frame bars and having a longitudinal axis parallel to the axis of said column, and said threaded rod being operable for securing the first and second frame bars in predetermined spaced position on said connecting column.

A traveling trolley assembly for hoisting appliances comprising:

• a first side frame bar spaced apart from a second frame bar;
• a running rail extending between said frame bars;
• pairs of wheels mounted on said first and second frame bars, each pair including a first wheel mounted on said first frame bar and a second wheel mounted on said second frame bar, said pairs of wheels having parallel axes of rotation;
• a pair of connecting columns extending between said first frame bar and said second frame bar, said extending columns being disposed at a location below said pairs of wheels and having longitudinal axes parallel to the axes of rotation of said pairs of wheels;
• said first and second frame bars each being formed with an opening for mounting on said columns, said connecting columns each having a smooth cylindrical outer surface extending substantially the length thereof while permitting selective positioning of said first and second frame bars over said smooth cylindrical surface into predetermined spaced relation to each other;
• a pair of threaded rods each having a longitudinal axis and being supported between said first and second frame bars with the longitudinal axes thereof each being disposed at a level below the longitudinal axis of a respective one of said columns, and said threaded rods being operable for securing the first and second frame bars in predetermined spaced position on said connecting columns.