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Updated: May 9, 2025
See that jewel pin reaches fork properly and that the guard pin also reaches the roller. See that your balance is free from the plate and the bridge. If the balance is true and all right, you are ready to put on your hair-spring. See that it is in beat. It is well to make a mark on the balance before taking off the old staff, showing positions of hair-spring stud and jewel pin.
I knew the thing was loaded, but I had no idea the hair-spring ring at the end was so delicate as to shoot it off at a touch. It's one of those aristocratic little Apache pistols that one can carry in his vest pocket and hide in his hand. Say, but that stung! And back here is a little box of cartridges, too." We looked at each other in amazement at the chance find.
The two popular methods of holding a balance staff in wax have been described and illustrated; the reader may take his choice. The turning and finishing of the other end of the staff is performed as previously described. That portion on which the hair-spring collet goes should be turned to nearly the proper size, making due allowance for the grinding and polishing that is to come.
By the aid of the pinion calipers and the old staff, the diameter of the roller seat and the balance and hair-spring collet seats may be readily taken, but it is perhaps better to gauge the holes, as the old staff may not have been perfect in this respect. A round broach will answer admirably for this purpose, and the size may be taken from the broach by means of the calipers.
A stock-list was always tacked above his secretary, and another constantly in his pocket. And this evening he had brought home a revolving disk, having figures of various values engraved around its edge, carefully poised, with a hair-spring pointer, like a hand on a dial-plate. "What have you got, John?" asked his wife. "Only a toy, a plaything, deary. See it spin!" and he gave the disk a whirl.
The English language was wound up to run some thousands of years, I trust; but if everybody is to be pulling at everything he thinks is a hair, our grandchildren will have to make the discovery that it is a hair-spring, and the old Anglo-Norman soul's-timekeeper will run down, as so many other dialects have done before it. I can't stand this meddling any better than you, Sir.
"I should have thought " I began, but he told me I could not yet have grasped it, and that he wished to be more explicit. "On a king bolt," he said, occasionally consulting his notes, "runs a pivot in bevel which is kept in place by a small hair-spring, which spring fits loosely on the Conkling Shaft." "Exactly," said I, "I see what is coming." But he wouldn't let me off so easily.
Here, keep back, some of you. Breathing on the works spoils a watch." "Oh, what a beauty!" rose in chorus, and I saw Mercer press forward with his eyes dilated, and an intense look of longing in his countenance, as he gazed at the bright yellow works, and the tiny wheel swinging to and fro upon its hair-spring. "Yes, it's a good watch," said Burr major, in a voice full of careless indifference.
At that psychological moment Grip, balanced to the perfection of a hair-spring, and calmly calculating, leaped upon him from the side, and brought the youngster's four feet into the air at one time. That was the opening, and, in the same second, Grip's jaws sprang apart to profit by it and to inclose Jan's throat in a final and sufficing hold.
The English language was wound up to run some thousands of years, I trust; but if everybody is to be pulling at everything he thinks is a hair, our grandchildren will have to make the discovery that it is a hair-spring, and the old Anglo-Norman soul's-timekeeper will run down, as so many other dialects have done before it. I can't stand this meddling any better than you, Sir.
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