Trench filler and visual guide for same

Claim 1

IN COMBINATION WITH A WHEELED ROAD SHOULDE SPREADER ASSEMBLY FOR RIGIDLY STEERABLE ATTACHMENT TO A STEERABLE PROPELLED VEHICLE FOR DEPOSITING AND SPREADING AGGREGATE IN A TRENCH ALONG A ROD SHOULDER HAVING AN EXPOSED EDGE, A STEERING GUIDE ASSEMBLY COMPRISING A RIGID REFERENCE MEMBER SECURED TO THE SPREADER ASSEMBLY EXTENDING UPWARDLY AT RIGHT ANGLE TO THE HORIZONTAL PLANE OF THE ROAD AT SAID EXPOSED EDGE INTO THE LINE OF VISION OF AN OPERATOR OF SAID PROPELLED VEHICLE AND A GUIDE MEMBER FOR HORIZONTAL MOVEMENT SECURED TO SAID SPREADER ASSEMBLY IN CLOSE PROXIMITY TO THE RIGID MEMBER, SAID GUIDE MEMBER HAVING A DOWNWARDLY EXTENDING ELEMENT BIASED TO FOLLOW IN ENGAGEMENT WITH THE EDGE OF THE ROAD AND ANOTHER ELEMENT EXTENDING UPWARDLY IN CLOSE PROXIMITY TO SID REFERENCE MEMBER AND MOVABLE HORIZONTALLY WITH RESPECT THERETO SO THAT THE OPERATOR OF THE PROPELLED VEHICLE RECEIVES MECHANICALLY A VISUAL INDICATION OF THE LINE OF MOVEMENT OF THE SPREADER ASSEMBLY RELATIVE TO THE EDGE OF THE ROAD.