Apparatus for applying grouting material

Claim 1

AN APPARATUS FOR INSTALLING JOINT MATERIAL IN A JOINT BETWEEN ADJACENT SECTIONS OF RIGID MATERIAL, SAID APPARATUS COMPRISING A FRAME, A HOPPER FOR RECEIVING SEMIPLASTIC JOINT MATERIAL CARRIED BY SAID FRAME, MEANS FOR DISPENSING SEMI-PLASTIC JOINT MATERIAL FROM SAID HOPPER INTO THE JOINT BETWEEN ADJACENT SECTIONS OF RIGID MATERIAL, TRACKING MEANS FOR RECEPTION WITHIN THE JOINT SECURED TO SAID FRAME FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS NORMAL TO THE LONGITUDINAL EXTENT OF SAID FRAME, COMPACTING MEANS, MEANS MOUNTING SAID COMPACTING MEANS BENEATH SAID FRAME FOR MOVEMENT BETWEEN AN EXTENDED POSITION IN ENGAGEMENT WITH THE ADJACENT SECTIONS OF RIGID MATERIAL AND STRADDLING THE JOINT THEREBETWEEN AND A RETRACTED POSITION SPACED ABOVE THE SECTIONS OF RIGID MATERIAL, SAID TRACKING MEANS BEING DISPOSED FORWARDLY OF SAID DISPENSING MEANS AND SAID COMPACTING MEANS BEING DISPOSED REARWARDLY OF THE POINT AT WHICH SAID DISPENSING MEANS DISCHARGES JOINT MATERIAL, AND MEANS RESPONSIVE TO PIVOTAL ANGULAR MOVEMENT OF SAID TRACKING MEANS WITH RESPECT TO THE LONGITUDINAL EXTENT OF SAID FRAME FOR RETRACTING SAID COMPACTING MEANS FROM EXTENDED POSITION.