Method for mounting of plastic sheet material, particularly as ceiling covering in aroom, and a tool accomplishing the method

Claim 1

A METHOD OF MOUNTING A PLASTIC SHEET AND A LATH ONTO A SURFACE, SAID METHOD COMPRISING: FASTENING AN EDGE OF THE SHEET TO A SIDE SURFACE OF THE LATH AND COMPLETELY WRAPPING THE SHEET AROUND THE LATH TO FACE SAID SIDE SURFACE AND EXTEND LATERALLY THEREOF, SUPPORTING THE LATH AND THE SHEET ATTACHED THERETO IN A TOOL HAVING A FLAT MEMBER INTERPOSED BETWEEN THE PORTION OF THE SHEET WHICH IS FASTENED TO THE SIDE SURFACE OF THE LATH AND THE PORTION OF THE SHEET WHICH FACES THE LATTER AND EXTENDS FROM THE LATH, PLACING THE LATTER SAID PORTION OF THE SHEET AGAINST THE SURFACE TO WHICH THE LATH AND SHEET ARE TO BE MOUNTED BY ENGAGING AND MOVING THE TOOL SUPPORTING THE LATH AND SHEET AND WHILE STRETCHING THE LATTER, THE LATH TENDING TO PIVOT UNDER THE STRETCHING OF THE SHEET AS SAID LATH IS MOVED BY SAID TOOL TOWARDS SAID SURFACE, THE LATH BEING SUPPORTED IN THE TOOL TO PREVENT PIVOTING OF THE LATH WHILE THE LATTER IS BROUGHT TOWARDS SAID SURFACE ON WHICH THE SHEET AND LATH ARE TO BE SECURED, SECURING THE LATH AND SHEET TO THE LATTER SURFACE WHILE LEAVING THE TOOL FREE FOR REMOVAL AND THEREAFTER REMOVING THE TOOL FROM THE LATH AND SHEET TO LEAVE THE LATTER SECURED TO SAID SURFACE.