Loop

Definition and stakes

Portrait of Jack London Jack London,  Michael, Brother of Jerry (1917)

“ Even they essayed to make him "loop the loop"--rushing him down an inclined trough at so high speed of his legs, accelerated by the slash of whips on his hindquarters, that, with such initial momentum, had he put his heart and will into it, he could have successfully run up the inside of the loop, and across the inside of the top of it, back-downward, like a fly on the ceiling, and on and down and around and out of the loop. ”
Source: Wikisource

The Wonder Book of Knowledge

“ This I overcame with my loop-setter invention. To explain briefly—
“As the full movement at the upper and lower reel is continuous, while at the aperture it is intermittent, a loop is necessary as a feeder for the take-up or the lower sprocket. If this loop is lost, the film becomes taut, the machine stops and the film may break. The loop-setter instantly readjusts this loop automatically, keeping it always in force.”
The taking of pictures is, of course, one of the interesting phases of the business from a popular standpoint.
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Source: Gutenberg

A. N. Palmer,  The Palmer Method of Business Writing (1901)

“ The loop letters were three spaces, or three-eighths of an inch high, which is two-sixteenths of an inch higher than the loops in these lessons.
Movement Used—In business writing, all loops below the line should be made with pure muscular movement. In making those above the line, the fingers should be relaxed, and as the arm slides forward, a slight extension of the fingers will help to make the upper part of the loop. The combination of the two movements is perfectly natural to most hands, and little encouragement need be given to the use of the fingers.
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Source: Gutenberg

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