Bearings: the groove or shoulder in which a stone is fitted in a piece of jewelry.
Gears, bearings, shafts, and other moving parts of antique phonographs need to be greased at least once a year. Proper lubrication is essential to keep the motor running, gears working, and music playing - especially on often-used machines.
Abruptly switching to a different kind of lamp, let's say incandescent or even a cooler or warmer fluorescent model, is tantamount to changing the rules: the grader temporarily loses his bearings or color "reference points.
Spring devices in balance-wheel bearings that divert shocks away from the fragile pivot to the sturdier parts of the balance staff. The springs allow the balance-wheel to return to its original position after shocks.
SHOCK RESISTANT ...
Jewels
Synthetic sapphires or rubies that act as bearings for gears in a mechanical watch. The jewels reduce friction to make the watch more accurate and longer-lasting.
Contact us toll free at: 1-866-GEM-5656 (1-866-436-5656) ...
German trade name for 8.5% tin phosphor bronze as drawn tube for bearings.
Cathode copper
Pure copper, the product of electrolytic refining supplied for melting for the manufacture of products.
arbor - A part of a mechanism that rotates or that turns in pivot bearings while holding something that turns. An example would be the mini mandrels when in a flexshaft handpiece.
BORT or BOART. Imperfectly crystallised form of diamond unfit for gems and used for pointing rock drills, for bearings of fine machinery and other technical uses.
BOTRYOIDAL. A surface presenting a group of rounded projections.
soldering - some "lead-free" solders contain 5% Sb
main and big-end bearings in internal combustion engines (as alloy)
used in the past to treat Schistosomiasis; today Praziquantel is universally used
used in linotype printing machines ...
1934, Sapphires and Sapphire Ball Bearings (synthetic and natural), p. 173, 2pp.
Summer 1936, A Substitute for Star Sapphires, p. 47, 1p.
Fall 1942, Local Peculiarities of Sapphires, by Gübelin, p. 34, 6pp.
Barbara Schulte-Hengesbach is a jewellery designer from Düsseldorf, Germany, who fabricates bold art-modern pieces, and kinetic jewelry (kinetischer schmuck) with movable parts that rotate on ball-bearings.
Precision jeweled bearing rollers use sapphire balls for their low-friction and long-wear applications. Some advantages of using synthetic sapphires as jeweled bearings are: ...
While occasionally used to deceive even the most experienced eyes, most created and simulated gems are honestly used in a wide range of applications ranging from fashion jewelry to radio components and watch bearings.
Although no longer widely used as an abrasive (silicon carbide [H=9.5] and diamond bort or carbonado are used instead), industrial applications today include use as "jewel" bearings in instruments and fine watches, ...
The large crystals of almandine recovered at Gore Mountain in New York provide a major source for this industrial use. The physical properties of pyrope (its elasticity and heat conductivity) make it ideal for bearings used in the manufacture of ...
 See also: Bearing, Jewel, Stone, Natural, Water
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