Material spreader and control system

Claim 1

IN A MATERIAL SPREADER TRUCK HAVING A BODY FOR ACCOMMODATING PAVEMENT TREATING MATERIAL, A CHUTE MOUNTED AT THE REARWARD PORTION OF SAID BODY FOR RECEIVING SAID MATERIAL, A SPINNER DISC MOUNTED ON SAID CHUTE FOR ROTATION ABOUT A VERTICAL AXIS, AN AUGER ASSEMBLY COMPRISING A HOUSING SECURED TO THE LOWER PORTION OF SAID CHUTE AND AN AUGER BLADE ROTATABLY MOUNTED THEREIN, A GUIDE PLATE PIVOTALLY MOUNTED WITHIN SAID CHUTE FOR OSCILLATORY MOVEMENT ABOUT A TRANSVERSE AXIS, SAID PLATE BEINGADAPTED TO ASSUME EITHER OF TWO POSITIONS AND FUNCTIONING TO DIRECT THE MATERIAL INTO SAID AUGER WHEN IT ASSUMES ONE POSITION AND ONTO SAID SPINNER DISC WHEN IT ASSUMES THE OTHER POSITION, MECHANICAL LINKAGE MEANS FOR ADJUSTING SAID GUIDE PLATE FROM ONE POSITION TO THE OTHER, FIRST AND SECOND MOTOR MEANS FOR RESPECTIVELY POWERING SAID AUGER ASSEMBLY AND SAID SPINNER DISC, A SOURCE OF POWER FOR SAID MOTORS, CONTROL MEANS FOR SELECTIVELY DISTRIBUTING POWER FROM SAID SOURCE TO SAID MOTORS, AND AN INTERLOCK CONNECTION BETWEEN SAID CONTROL MEANS AND SAID LINKAGE MEANS WHEREBY SAID MOTORS ARE SELECTIVELY ACTIVATED AND DEACTIVATED AS SAID PLATE IS ADJUSTED APPROPRIATELY TO ACCOMMODATE DISTRIBUTION OF MATERIAL OVER THE PAVEMENT.