A Waterproof Canopy for the World's Largest Building
The canvas selected was 28-inch water-proofed material of maroon color on one side and robin's egg blue on the other. The stripes were made by cutting off a one-fourth width of the canvas and turning up the maroon side. Approximately 2,000 yards of two-needle seaming on the Samson machine were used in joining together all of these strips of canvas. Because it was required that all strips should match up in color where two planes came together, the seams had to be made with extreme accuracy. Mr. Kenneth Lewis and Mr. C.B. Leffert of the Carpenter Company report that the Class 38200 machine handled this seaming very successfully.