See also:HONE (in O. Eng. han, cognate with Swed. See also:hen ; the See also:root appears in Skt. gdna, co to sharpen)
, a variety of finely siliceous See also:- STONE
- STONE (0. Eng. shin; the word is common to Teutonic languages, cf. Ger. Stein, Du. steen, Dan. and Swed. sten; the root is also seen in Gr. aria, pebble)
- STONE, CHARLES POMEROY (1824-1887)
- STONE, EDWARD JAMES (1831-1897)
- STONE, FRANK (1800-1859)
- STONE, GEORGE (1708—1764)
- STONE, LUCY [BLACKWELL] (1818-1893)
- STONE, MARCUS (184o— )
- STONE, NICHOLAS (1586-1647)
stone employed for whetting or sharpening edge tools, and for abrading See also:steel and other hard surfaces
.
Synonyms are See also:hone-stone, See also:whetstone, oilstone and sharpening stone
.
Hones are generally prepared in the See also:form of See also:flat slabs or small pencils or rods, but some are made with the outline of the See also:special See also:instrument they are designed to sharpen
.
Their abrading See also:action is due to the See also:quartz or See also:silica which is always See also:present in predominating proportion, some kinds consisting of almost pure quartz, while in others the siliceous See also:element is very intimately mixed with aluminous or calcareous See also:matter, forming a See also:uniform compact stone, the extremely See also:fine siliceous particles of which impart a remarkably keen edge to the See also:instruments for the sharpening of which they are applied
.
In some cases the presence of See also:minute garnets or See also:magnetite assists in the cutting action
.
Hones are used either dry, with See also:water, or with oil, and generally the See also:object to be sharpened is See also:drawn with See also:hand pressure backward and forward over the See also:surface of the hone; but sometimes the stone is moved over the cutting edge
.
The coarsest type of stone which can be included among hones is the See also:bat or See also:scythe stone, a porous fine-grained See also:sandstone used,-for sharpening scythes and cutters of mowing See also:machines, and for other like purposes
.
Next come the ragstones, which consist of quartzose See also:mica-schist, and give a finer edge than any sandstone
.
Under the See also:head of oilstones or hones proper the most famous and best-known qualities are the See also:German See also:razor hone, the See also:Turkey oilstone, and the See also:Arkansas stone
.
The German razor hone, used, as its name implies, chiefly for razors, is obtained from the See also:slate mountains near Ratisbon, where it forms a yellow vein of from 1 to 18 in. in the See also:blue slate
.
It is sawn into thin slabs, and these are cemented to slabs of slate which serve as a support
.
Turkey oilstone is a See also:close-grained bluish stone
containing from 70 to 75% of silica in a See also:state of very fine See also:division, intimately blended with about 20 to 25% of See also:calcite
.
It is obtained only in small pieces, frequently flawed and not tough, so that the slabs must have a backing of slate or See also:wood
.
It is one of the most valuable of all whetstones, abrading the hardest steel, and possessing sufficient compactness to resist the pressure required for sharpening gravers
.
The stone comes from the interior of See also:Asia See also:Minor, whence it is carried to See also:Smyrna
.
Of Arkansas stones there are two varieties, both found in the same See also:district, See also:Garland and Saline counties, Arkansas, See also:United States
.
The finer See also:kind, known as Arkansas hone, is obtained in small pieces at the Hot Springs, and the second quality, distinguished as Washita stone, comes from Washita or Ouachita See also:river
.
The hones yield on See also:analysis 98% of silica, with small proportions of alumina, potash and soda, and See also:mere traces of See also:iron, See also:lime, See also:magnesia and See also:fluorine
.
They are See also:- WHITE
- WHITE, ANDREW DICKSON (1832– )
- WHITE, GILBERT (1720–1793)
- WHITE, HENRY KIRKE (1785-1806)
- WHITE, HUGH LAWSON (1773-1840)
- WHITE, JOSEPH BLANCO (1775-1841)
- WHITE, RICHARD GRANT (1822-1885)
- WHITE, ROBERT (1645-1704)
- WHITE, SIR GEORGE STUART (1835– )
- WHITE, SIR THOMAS (1492-1567)
- WHITE, SIR WILLIAM ARTHUR (1824--1891)
- WHITE, SIR WILLIAM HENRY (1845– )
- WHITE, THOMAS (1628-1698)
- WHITE, THOMAS (c. 1550-1624)
white in See also:colour, extremely hard and keen in grit, and not easily worn down or broken
.
Geologically the materials are called novaculites, and are supposed to be metamorphosed sandstone silt, chert or See also:limestone resulting from the permeation through the See also:mass of heated alkaline siliceous See also:waters
.
The finer kind is employed for fine cutting instruments, and also for polishing steel pivots of See also:watch-wheels and similar minute See also:work, the second and coarser quality being used for See also:common tools
.
Both varieties are largely exported from the United States in the form of blocks, slips, pencils, rods and wheels
.
Other honestones are obtained in the United States from New See also:York, New See also:Hampshire, See also:Vermont, See also:Ohio (Deerlick stone) and See also:Indiana (Hindostan or See also:Orange stone)
.
Among hones of less importance in See also:general use may be noted the Charley See also:Forest stone—or Whittle See also:- HILL
- HILL (0. Eng. hyll; cf. Low Ger. hull, Mid. Dutch hul, allied to Lat. celsus, high, collis, hill, &c.)
- HILL, A
- HILL, AARON (1685-175o)
- HILL, AMBROSE POWELL
- HILL, DANIEL HARVEY (1821-1889)
- HILL, DAVID BENNETT (1843–1910)
- HILL, GEORGE BIRKBECK NORMAN (1835-1903)
- HILL, JAMES J
- HILL, JOHN (c. 1716-1775)
- HILL, MATTHEW DAVENPORT (1792-1872)
- HILL, OCTAVIA (1838– )
- HILL, ROWLAND (1744–1833)
- HILL, SIR ROWLAND (1795-1879)
Hill honestone—a See also:good substitute for Turkey oilstone; Water of See also:Ayr stone, Scotch stone, or snake stone, a See also:pale See also:grey carboniferous shale hardened by igneous action, used for tools and for polishing See also:marble and See also:copper-plates; Idwal or Welsh oilstone, used for small articles; and cutlers' greenstone from See also:Snowdon, very hard and close in texture, used for giving the last edge to lancets
.
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