Patent ID: 9545816
Date: 2017-01-17
CPC Classifications: B41F,B44D,D06C

Claim:
1. A kit for assembling a frame with a stretched sheet comprising: a sheet having an edge; a set of four stretcher bars including first, second, third, and fourth stretcher bars to be assembled end to end to form a frame whereby the first and third stretcher bars define opposite sides of the frame, each stretcher bar having a lower surface to be disposed upon the sheet during assembly and an opposing upper surface, the third stretcher bar defining a vertical surface that faces the first stretcher bar; a first stretching lever having opposing upper and lower edges, the lower edge to be placed against the vertical surface and the upper edge to be attached to the edge of the sheet whereby rotation of the upper edge toward the first stretcher bar tensions the sheet along a direction perpendicular to a major axis of the third stretcher bar wherein the upper surface of each stretcher bar includes a brace recess horizontal surface and further comprising: a set of cross braces for coupling the brace recess horizontal surfaces of the first and third stretcher bars.