Tentering frame for sheet-like members

Claim 1

A tentering apparatus for tensioning a sheet-like member comprising: (a) an outer frame member arranged in a picture frame type configuration with an inside and outside perimeter, (b) at least four clamping assemblies adjacent to each other and arranged in a picture frame type configuration within the inside perimeter of the outer frame member and spaced apart from the outer frame member, each of the clamping assemblies adapted for clamping the edges of the sheet-like member to hold the sheet-like member generally flat, and each of the clamping assemblies comprising at least two elongated, generally planar members adjacent and parallel to each other, and held together with a first fastening means including at least one clamp screw, the edges of the sheet-like member disposed between the two elongated members and disposed generally planar to the plane of the sheet-like member, and (c) an adjustable second fastening means including a plurality of wing nuts and bolts for fastening the clamping assemblies to the outer frame member, the second fastening means adapted for fixedly tensioning the sheet.