Sewer cleaning equipment

Protection apparatus in a mobile sewer cleaning machine having a compartment enclosing a reel and a hose wound thereon, the compartment having an opening through which the hose can be unwound into a sewer through a sewer opening, and a motor for rotating the reel to advance the hose through the sewer, comprising:

• leveling means, mounted in the upper area of the compartment and rotationally connected to the reel, for moving the hose laterally in a direction substantially parallel to the rotational axis of the reel as the motor rotates the reel to wind the hose levelly in successive layers on the reel;
• a slide bar mounted in the upper area of the compartment;
• and,
• a roller, mounted for rotation and lateral movement on said slide bar, adapted for receiving the hose from said leveling means and suspending the hose over the sewer opening.

Protection apparatus in a mobile sewer cleaning machine having a compartment enclosing a reel and a hose wound thereon, the compartment having an opening through which the hose can be unwound into a sewer through a sewer opening, and a motor for rotating the reel to advance the hose through the sewer, comprising:

• sensing means, mounted below the reel and the hose, for sensing the presence of a descending loop of the hose from the reel and for providing a stop signal in response thereto;
• and
• actuating means, connected to said sensing means, for stopping the motor in response to said stop signal;
• whereby, said sensing and actuating means prevent the hose from unwinding and backing up in the compartment when the hose is unwound by the motor at a rate which is faster than the rate at which is advances through the sewer.

Protection apparatus in a mobile sewer cleaning machine having a compartment enclosing a reel and a hose wound thereon, the compartment having an opening through which the hose can be unwound into a sewer through a sewer opening, a portion of the hose between the opening in the compartment and the sewer being exposed, the hose and reel being viewable through the opening in the compartment, and a motor for rotating the reel to advance the hose through the sewer, comprising:

• shield means for enclosing the periphery of the exposed portion of the hose received through an opening therein and extending substantially the full length of the exposed portion of the hose toward the sewer opening;
• means for fastening said shield means to the cleaning machine so that the opening of said shield means is aligned with the opening in the compartment;
• sensing means, mounted below the reel and the hose, for sensing the presence of a descending loop of hose from the reel and for providing a stop signal in response thereto;
• and,
• actuating means, connected to said sensing means, for stopping the motor in response to said stop signal;
• whereby, said shield means contains the fragments and contents of a bursting hose while said sensing means and actuating means prevent the hose from unwinding and backing up in the compartment when the hose is unwound by the motor at a rate which is faster than the rate at which it advances through the sewer.