Abstract: The rag wringer is for use on an open barrel. It comprises a frame including to spaced-apart rails configured and disposed to engage the upper rim of the barrel. It further comprises a roller assembly having two parallel and horizontally-disposed rolls operatively connected to the frame. A pneumatic drive unit, including a pneumatic motor, is mechanically connected to at least one of the rolls. Damped rags enter the wringer through a rag funnel having an upper entry and a bottom exit, the bottom exit being juxtaposed to the entry of the roller assembly. Liquids removed from the rags are falling into a collecting pan located underneath the roller assembly. A guide plate connected to the frame below the rag exit of the roller assembly allows to direct processed rags into the barrel.

Abstract: An automatic mirror positioning system is intended for tractor-trailer vehicles such as a tractor provided with a semi-trailer. The tractor includes a fifth wheel used to couple the trailer to the tractor. The system includes an angle detection unit to measure a relative angular pivot between the tractor and the trailer, a computer for interpreting data received from the detection unit, and a mirror assembly which includes a rotatable mirror which is operated by the signals received from the computer, whereby the system modifies the positions of the exterior rearview mirrors of the tractor in view of the relative position of the tractor and the trailer in order that the driver can view the sides and the rear corners of the trailer for any angle defined between the tractor and the trailer.