An outer housing with two verticle sides, having a channel shaped piece holding two sides in place. An inner wheel U shaped carriage, two vertical sides attached at top by a channel shaped piece, the wheel mounted at lower end of vertical sides, the U shaped carriage held in place by vertical guides attached to outer housing. The top of outer housing and top of inner wheel carriage being the spring placement area, the spring held in place and also used for adjustment, by bolts passing through top of outer housing, passing through coil springs and through top of inner wheel carriage.
An assembly line system has a pallet travelling along a work top of a work table section. The table section has a track along which a cardanic chain moves to convey pucks connected to the underside of the pallet in spring-loaded manner, by means of frictional engagement between the chain and pucks. The pallet is provided with a set of castors having resilient wheels. Passageways convey the pneumatic supply necessary for operating various items of equipment along the assembly line. The assembly line system also includes an adjustable track bend. In a modification the pucks are locked in the track.
