Pavement finisher

Claim 1

A PAVEMENT FINISHER FOR USE WITH A PAIR OF SIDE FORM MEMBERS, EACH OF SAID SIDE FROM MEMBERS CONSISTING OF A PLURALITY OF LONGITUDINALLY ALIGNED SECTION OF SUBSTANTIALLY UNIFORM LENGTH, COMPRISING: A LONGITUDINALLY EXTENDING FRAME; A FIRST SET OF FRAME SUPPORTING MEANS ON THE FRONT PORTION OF SAID FRAME; A SECOND SET OF FRAME SUPPORTING MEANS ON THE REAR PORTION OF SAID FRAME, THE LONGITUDINAL DISTANCE BETWEEN SAID FIRST AND SECOND SETS OF FRAME SUPPORTING MEANS EXCEEDING TWICE THE LENGTH OF AN INDIVIDUAL SIDE FORM SECTION; SCREED MEANS SUSPENDED AT A PREDETERMINED ELEVATION FROM THE INTERMEDIATE PORTION OF SAID FRAME, SAID SCREED MEANS INCLUDING A TRANSVERSE SCRAPER ELEMENT HAVING A LENGTH SMALLER THAN THE DISTANCE BETWEEN THE SIDE FORM MEMBERS; A PAIR OF SIDE FORM-ENGAGING SHOES, EACH SHOE FORMING A TRANSVERSE EXTENSION OF AN ADJACENT END OF SAID SCRAPER ELEMENT; CONNECTING MEANS PIVOTALLY SECURING THE END OF EACH OF SAID SHOES PROXIMATE SAID SCRAPER ELEMENT TO THE ADJACENT END OF SAID SCRAPER ELEMENT WHEREBY SAID SHOES MAY RIDE ALONG THE UPWARDLY-FACING SURFACES OF SAID SIDE FORMS UNDERGOING PIVOTAL MOVEMENT ABOUT A HORIZONTAL AXIS OF ROTATION RELATIVE TO THE ENDS OF SAID SCRAPER ELEMENT AND INDEPENDENTLY OF THE ELEVATION OF SAID SCRAPER ELEMENT; AND SELETIVELY ENGAGEABLE LOCK MEANS THAT LOCK SAID SHOES AGAINST VERTICAL MOVEMENT RELATIVE TO SAID SCRAPER ELEMENT.