Alma record. (Alma, Mich.) 1878-1928, 1900-02-09
GLASS BEVELLING.
PROCESS BY WHICH EDGE IS CUT
AWAY AND RGFlNloHSD.

The Plate to Be Heveiled Goes from One
wheel to Another Until II is brought !"
the Right Polish Emery. sasd and Wood
Wheels Are Lscd.
Beveiied glass is not new. Lu. II Is
now far more extensively used than
formerly. Twenty years ago bevelled
mirrors were comparatively rare; now
they are common, and are seen in
many shapes and sizes. Beyellec
pla es, large and small. and both
straight and bent are used for various
other purposes. The process of glass
bevelling is very simple, but the work
calls for Skill on the part OF the oper-
ators.
The plate to lie bevelled goes first to
he roughins mill, which is a solid,
heavy steel wheel about two feet ana
a half in diameter, set horizontally.
and turning at a high rate OF speed.
The upper face. or top Of this wheel.
is slightly roughened Suspended over
the wheel is a big hopper con aiming
sand. which is led down through
spout il such quantity as may be ret
Quired upon the top Of the rough-faced
steel wheel. The grinder holds the
plate to be ground In his hands. with
the Cdce 20 be ground off upon the
face OF the roughing mill; he shifts
the plate along as the glass is ground
away. The expert grinder, holding a
sheet of glass against the roughing
wheel in this manner will grind a
true beyel, with a perfectly straight
"a, n
brings the side bevels together with
perfectly true angle at the corners.
In the roughing mill the bevel is
wrought to shape but its face is rough
looking and feeling, in fact. like what
it is, ground glass. The plate goes
then to the emery wheel, also OF steel
and set horizontally. Suspended over
this wheel is a little hopper filled with
emery. the emery feeding down upon
the wheel Upon this wheel the rough
face of the bevel as it comes from the
rcughng mill Is again ground, the
place being held IN the same manner
by grinder. and the surface is
brought nearer to smoothness.
From the emery wheel the plate
goes TO the smoothing stone. which Is
also set to urn horizontally. The
smoothing stone. which is of an eX-
tremely fine sandstone. is made with
its upper surface. that against which
the glass is brought very slightly con-
veX. This stone is finished perfectly
smooth and ii is SO fine-grained that
to the touch il seems almost 10 he
polished A tiny stream of water.
enough to keep the face Of the stone
Wet, is made 10 trickle down upon il
and the glass Is held to this wheel
just as it was TO the others. and heve
the bevelled edge is brought down to
smOo h surface. but not polished The
plate goes then 70 a polishing wheel
made Of wood and set 10 turn vertical
ly; the bevel edge of the glass is held
against the edge. or face Of this
wooden wheel a. rapidly revolves
The face of the wheel il kept wet and
constantly supplied with pu!verized
stone Upon this wheel the bevclled
edge gets its first polish. The glass
then takes the final step III the bevell-
ing process 1t goes 60 another wheel.
a.po !. wood. .ad al.o tuuniu. vert!
cally whose face is OF felt. The face
of this wheel also is kept We; ard it
is supplied with a fine polishing ma
terial called from IS color. rouge
Here as at the first polishing wheel
the glass is held with the be1el against
the edge. or face Of the wheel On tie
rouge wheel the beve gets rs fnM
90 ish and finish and the surface Of
the beyolled edge, which after the frs
operation. was rough ike ground glass
IS now as smooth and ae polished ao
the fiat surface of the plate.
G.ea plates that arc too big to no
hold by h9nd are locked into a frame
that cen be 80 moved as to bring the
edges to he bovcllcd against wheels
ad i,stcd for the purpcs..