Brass ring

Definition and stakes

The Boy Mechanic, Book 2: 1000 Things for Boys to Do

“ Occasionally an amateur has need of brass rings of round cross section, and if their construction is not understood, the task is a difficult one. If a piece of brass tubing, an old bushing or a cored piece is at hand, a part of the work is already done. If not, a piece of stock with large enough outside diameter should be chucked in the lathe and drilled out with the right size of drill. A tin or pasteboard template should be prepared the size of the ring section—a half circle is best, and it is easiest made by drilling a hole in the tin and cutting it in two. ”
Source: Gutenberg

Various,  Notes and Queries, Number 65, January 25…

“ A small narrow band of brass (about one-fifth of the width) runs along the centre of the ring, and of course covers the slit. This narrow band is movable, and has a hole in one part through which the rays of the sun can fall. On each side of the band (to the right of the handle) letters, which stand for the names of the months, are inscribed on the ring as follows:—
Inside the ring, opposite to these letters, are the following figures for the hours:—
The small brass band was made movable that the ring-click might be properly set by the sun at stated periods, perhaps once a month.
”
Source: Gutenberg

Harry Chase Brearley,  Time Telling through the Ages

“ When heat, elongating the balance ring, causes it to vibrate more slowly, the brass, expanding more than the steel, bends the free ends of the cut rim toward the center, thus decreasing the diameter of the balance and quickening the vibration. On the other hand, when cold, contracting the ring tends to quicken the vibration of the balance, the contraction of the brass rim draws the free end outward, making the diameter larger and the vibration slower in consequence. The compensation balance is also made with brass as the inner metal and aluminum outside. ”
Source: Gutenberg

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