We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
FOR MANAGERS AND OPERATORS
191
every corner and the whole frame is exactly square. This may be tested by measuring diagonal corners. If the distance from diagonally opposite corners is equal the screen is square. Now put on the back braces and then turn the frame over or set upright in place. The various steps in the process are shown, in their order, in Fig. 74.
Putting on Cloth.— The cloth should be rolled up so that the edge that goes to the top unrolls first. It may be put on either with the frame standing up or laying down. Standing the frame upright is the best plan, however, because the cloth will partly stretch by its own weight, and the whole job will be more easily and better done. A good start insures success. Lay the roll of cloth on a level floor; unroll a foot or two, and stretch a chalk line to determine whether or not its edge is perfectly straight. Trim it, if necessary, to fit the chalkline. Now make a chalkline across near the extreme edge of the top of the frame, on the front side, where the, cloth is to be tacked. The straight top edge of the cloth and the line on frame are placed together, and the cloth is tacked fast, thus insuring a good, straight start.
Tacking on Cloth.— Place the tacks about two inches apart. A thin tack with a large, flat head is the best. If the frame is placed upright a piece of cheesecloth should be looped and nailed to the frame on each end, to hold the roll of cloth in position while the top edge is tacked in place. Start at the center of the top, and tack both ways along the chalk line, until within about three or four feet of the corner. A single tack will hold each corner in position until you are ready to tack corners. Now unroll cloth slowly and carefully, keeping it stretched at all times. Stretch and tack the bottom of screen, beginning at center and working again to within three or four feet of each corner. Now tack one side at center to within a short distance of corner, and then tack
Figure 74.