The Providence news. (Providence [R.I.]) 1891-1906, 1899-12-27
GLASS tEvEllN6.

Beveled glass Is not new but IL IL now
far more extensively used than former
ly. Twenty years ago beveled mirrors
were comparatively rare. now they are
common, and are seen in many shapes
and sizes Beveled plates. large and
small, and both stpaight and bent, are
used for various other purposes The
process of glass beyeling IL very sim-
pie, but the work calls f0r skill on the
part of the operators. says the New
York sun.
The plate 10 De beveied goes first to
the roughing mill. which is a solid,
heavy steel wheel about two feet and q
half IN diameter set horizontally, ana
turning at a high rate OF speed. The
upper face or top of this wheel il slight
ly roughened. Suspended over the wheel
IL big hopper containing sand. which
is fed down through spout in such
quantity as may be required upon the
top OF the rough faced steel wheel. The
grinder holds plate Co be ground i'm his
hands. with the edge to he ground of
upon the face Of the rOughing mill; he
shifts the plate along as the glass Is
ground away. The expert grinder hold
ing sheet OF glass against he rough
ing wheel I'm this manner. will grind a
line along its inner edge. and he brings
the side <vels together with a per-
fectly true angle al the corners.
In the roughing mill the bevel Is
wrought 10 shape. but it's face is rough
looking and feeling. In fact. like what
IL is, ground glass. The plate goes then
20 the emery wheel also of steel and set
horizontally. Suspended over this
wheel is a little hopper filled with EN-
cry. the emery feeding down upon the
wheel Upon this wheel the rough face
uf the bevei tfS X comes fftttf- H. rough
ing mill Is again ground, the plate be-
ing held in the same manner by a grind
er, and the surface is brought nearer ID
smoothness.
From the emery wheel the plate goes
TO the smoothing stone which is also
set to turn horizontally. The smooth
ing stone, which is OF an extremely fine
sandstone, Is made with its upper sur
face, that against which the glass Us
brought, very slightly convex. Stone lis
finished perfectly smooth and IL is so
fine grained that 20 the touch il seems
almost 10 be polished \ tiny stream
OF water. enough 20 keep the face Of the
stone wet. is made 70 trickle down upon
II and the glass is held 10 this wheel
just as IL was 10 the Others and here
the beveled edge Is brought down TO a
smooth surface. but not polished. The
plate goes tnen 10 a pOllSnlnk Nneel
made of wood and set to turn vertically
the bevel edge of the glass is held
against the edge or face OF this wooden
wheel as IL rapidly revolves The face
Of the wheel is kept wet and constant
ly supplied with puverized stone. Up
on this wheel the beveled edge gets its
first polish. The glass then Iakes the
final step i'm the beVeling process lt
goes TO another wheel. also of wood.
and also turning vertically. whose face
Is of felt. The face Of this wheel also
IS. kept wet and IL is supplied with a
fine polishing material called from It's
color. rouge. Here. as at the first pol
ishing wheel. the glass $ held with the
bevel againsi the edge. or face OF the
wheel. ON the rouFa wheel the bevel
~ats it's fnal polish and finish and the
surface Of the beveled edge, which after
the first operation was rough like
ground glass. is now as smooth and as
polished as the fat surface of the plate.
Great plates that are too big TO be
held by hand are locked into a frame
that can be so moved as 70 bring the
edges 20 be beveled against wheels ad-
justed for the purpose.