Combination excavating trimming machine

Claim 1

AN APPARATUS FOR FORMING OPEN TRAPEZOIDAL WATER CONDUITS IN AN EARTH FOUNDATION, WHICH FOUNDATION HAS BEEN PREVIOUSLY CUT AND FILLED FROM THE NATURAL UNDULATING GROUND PROFILE TO A PRESELECTED MEAN ELEVATION, AND WHICH CONDUITS INCLUDE AN INVERT PORTION, A PAIR OF RESPECTIVE UPWARDLY EXTENDING SIDE SLOPE PORTIONS COMMENCING AT THE SIDES OF SAID INVERT PORTION, AND AT LEAST ONE BERM PORTION AT THE UPPER END OF EACH OF SAID RESPECTIVE SIDE SLOPE PORTIONS, THE APPARATUS COMPRISING A MOBILE BRIDGELIKE FRAMEWORK MOUNTED ON TRANSPORT VEHICLES FOR MOVEMENT ALONG A PROJECTED WORK PATH OVERLYING THE CONDUIT TO BE EXCAVATED, DIGGING MEANS CARRIED BY SAID FRAMEWORK AND DISPOSED BELOW SAID FRAMEWORK AND EXTENDING ACROSS THE CONDUIT AT THE FRONT END OF SAID FRAMEWORK WITH RESPECT TO THE DIRECTION OF TRAVEL THEREOF, SAID DIGGING MEANS HAVING OUTER DIGGING EDGES GENERALLY CONFORMING TO AND EXTENDING ENTIRELY ACROSS THE PRESELECTED CROSS SECTIONAL CONFIGURATION FOR THE CONDUIT, EXCAVATING MEANS CARRIED BY SAID DIGGING MEANS TO REMOVE DUG MATERIAL, SCRAPER MEANS CARRIED BY SAID FRAMEWORK AFT OF SAID DIGGING MEANS, SMOOTHING AND COMPACTING MEANS CARRIED BY SAID FRAMEWORK AFT OF SAID SCRAPER MEANS, SAID SCRAPER MEANS AND SAID SMOOTHING AND COMPACTING MEANS EXTENDING ENTIRELY ACROSS AND SUBSTANTIALLY CONFORMING TO THE PRE-SELECTED CROSS-SECTIONAL CONFIGURATION FOR THE CONDUIT AND EXTENDING DEEPER INTO THE CONDUIT THAN SAID DIGGING MEANS TO CUT AND TRIM AND COMPACT THE SAID SEVERAL PORTIONS OF THE CONDUIT TO UNIFORM NEAT LINE DIMENSIONS IN A SINGLE PASS THEREALONG, AND MEANS CARRIED BY THE FRAMEWORK TO CONVEY AWAY DUG, EXCAVATED AND TRIMMED EARTH MATERIAL FROM THE CONDUIT.

Claim 2

AN APPARATUS FOR FORMING OPEN TRAPEZOIDAL WATER CONDUITS IN AN EARTH FOUNDATION, WHICH FOUNDATION HAS BEEN PREVIOUSLY CUT AND FILLED FROM THE NATURAL UNDULATING GROUND PROFILE TO A PRESELECTED MEAN ELEVATION, AND WHICH CONDUITS INCLUDE AN INVERT PORTION, A PAIR OF RESPECTIVE UPWARDLY EXTENDING SIDE SLOPE PORTIONS COMMENCING AT THE SIDES OF SAID INVERT PORTION, AND AT LEAST ONE BERM PORTION AT THE UPPER END OF EACH OF SAID RESPECTIVE SIDE SLOPE PORTIONS, THE APPARATUS COMPRISING A MOBILE BRIDGELIKE FRAMEWORK MOUNTED ON TRANSPORT VEHICLES FOR MOVEMENT ALONG A PROJECTED WORK PATH OVERLYING THE CONDUIT TO BE EXCAVATED, DIGGING MEANS CARRIED BY SAID FRAMEWORK AND DISPOSED BELOW SAID FRAMEWORK AND EXTENDING ACROSS THE CONDUIT AT THE FRONT END OF SAID FRAMEWORK WITH RESPECT TO THE DIRECTION OF TRAVEL THEREOF, SAID DIGGING MEANS HAVING OUTER DIGGING EDGES GENERALLY CONFORMING TO AND EXTENDING ENTIRELY ACROSS THE PRESELECTED CROSS SECTIONAL CONFIGURATION FOR THE CONDUIT, EXCAVATING MEANS CARRIED BY SAID DIGGING MEANS TO REMOVE DUG MATERIAL, SCRAPER MEANS CARRIED BY SAID FRAMEWORK AFT OF SAID DIGGING MEANS, SMOOTHING AND COMPACTING MEANS CARRIED BY SAID FRAMEWORK AFT OF SAID SCRAPER MEANS, SAID SCRAPER MEANS AND SAID SMOOTHING AND COMPACTING MEANS EXTENDING ENTIRELY ACROSS AND SUBSTANTIALLY CONFORMING TO THE PRE-SELECTED CROSS-SECTIONAL CONFIGURATION FOR THE CONDUIT AND EXTENDING DEEPER INTO THE CONDUIT THAN SAID DIGGING MEANS TO CUT AND TRIM AND COMPACT THE SAID SEVERAL PORTIONS OF THE CONDUIT TO UNIFORM NEAT LINE DIMENSIONS IN A SINGLE PASS THEREALONG, AND MEANS CARRIED BY THE FRAMEWORK TO CONVEY AWAY DUG, EXCAVATED AND TRIMMED EARTH MATERIAL FROM THE CONDUIT.