Abstract: A self-propelled street sweeper including a main frame, sweepings pick-up means underlying the main frame and a dirt box positioned on the frame for receiving the sweepings. A main broom is mounted at a rear end of the main frame adapted to sweep sweepings to the sweepings pick-up means or conveyor so the sweepings can be deposited into the dirt box and having sweeping and road travel positions. Means is provided for driving the main broom when in its sweepings position. Means is further provided for suspending the main broom from the rear end of the main frame including suspension arms located on opposite sides of the main broom. Bearing means are provided between the suspension arms and the opposite sides of the main broom. Floating suspension means is operatively connected between the main broom and the main frame providing a floating suspension for enabling the main broom to freely float on a ground supporting surface as the main broom is dragged behind the main frame in road engagement.

Abstract: A street sweeping machine is disclosed comprising a wheeled frame, a cab is supported by the frame, a dirt receiving hopper is positioned behind the cab, a conveyor is positioned adjacent the hopper and has an upper end overlying the hopper for depositing materials picked up from a roadway into the hopper. The conveyor is pivotally mounted for movement relative to the hopper and the frame. Hopper lift means is provided for rotating the hopper off of the frame from behind the cab over the cab for unloading of the picked-up materials in the hopper at a forward end of the cab. Linkage is connected between the hopper lift means and the conveyor for pivoting the conveyor on its pivot so that its upper end moves clear from its position of overlying the hopper to allow the hopper lift means to rotate the hopper free of interference from the conveyor during the lifting movement of the hopper. Ram means is also provided for operating the hopper lift means to rotate the hopper to be unloaded forward of the cab.

Abstract: A self-propelled street sweeping machine or sweeper which includes a main frame. A dirt hopper and a main broom are mounted on the frame along with a conveyor. The conveyor is positionable relative to the frame for receiving sweepings from the main broom and for discharging the sweepings into the dirt hopper. Means are provided on the sweeper for enabling the main broom and the conveyor to move selectively of a transport position to a sweeping position and vice versa. The frame is supported by front and rear axles carried on wheels and spring means are provided between the rear axle and the main frame to enable an easier ride while the sweeper is operated in the transport position.