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.
REWINDING THE FILM THE REEL The film reel has received considerable thought. Originally they were a very simple affair, but they are made more substan- tially now than formerly, and some minor improvements have been introduced as well as some important variations in construc- tion and even in principle of operation. They consist of a hub with flanges. The latter are of various diameters according to the length of film the reel is to hold. The standard length of film for a reel is one thousand feet. This is taken care of on a reel of ten inches diameter. This is a standard size. The hub or central drum, on which the film winds, the diameter increasing as it accumulates until its layers fill the reel practically to the extreme diameter of the side flanges, is sometimes made of wood. This puts a little more combustible material into the mag- azine, and the practice is not to be commended. It may be made of metal and the reels embodying this feature are to be preferred. SIZES OF REELS Other diameters of reels are eleven, fourteen, and fifteen inches. The larger sizes take two thousand feet of film. The sides or flanges of reels are made of sheet steel stampings or of heavy steel wire. As the film comes off the reel it passes through the fire trap and goes through the machine. Care must be taken to have the film side next to the lamp, and the pictures must be upside down. On the hub of the reel there is a catch of one kind or another, which catches the end of the film, so that the film will be held for winding on the lower film or for rewinding as the case may be. Some complaint is made of the hub arrangements wearing out rapidly. New clips and keyways are to be had to replace old and worn ones. NON-REWINDING REELS One of the regular operations of reel manipulation is the re- winding. This is not without value as a means of detecting bad spots in the film. The rewinding is done rapidly compared with the feed in the projection machine, but the film as it is being re- wound can be passed through the fingers and weak or rough spots and incipient breaks can be thus detected. 213