Improved Apparatus for Grinding and Bevelling Glass and other substances.
Year: 1892

page_text: Date of Application; 26th May, 1892-Accepted. 2nd July, 1892
COMPLETE SPECIFICATION.
Improved Apparatus for Grinding and Bevelling Glass and other
substances.
We GUSTAV EDWARD WINKELMANN of 11 Catherine Terrace Seven Sisters
Road Tottenliam in the County of Middlesex and MOWBRAY WOOLLARD
EDGLEY of 40 & 41 Fleet Street in the City of London Cabinet Makers do hereby
declare the nature of our said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
The object of this invention is to construct an apparatus which is capable of
bevelling and grinding glass china porcelain and other substances in far less time
and with less labour than is possible with the apparatus now in use.
One way of carrying out our invention is that shewn in the accompanying
drawings in which
Fig. 1. represents side elevation of a glass bevelling machine constructed according
to our invention.
Fig. 2. is plan of same.
Fig. 3. is end elevation (partly in section) of the same.
The same letters denote the same parts in all the figures.
a. is a sliding piece reciprocated by the crank band connecting rod .c.
The piece a carries a series of grooved wheels d d d d d d geared together by the
spur wheels e e e e e e the spindle of one of the wheels has keyed thereon a pulley f
which is driven by a belt or chain g from the pulley which is keyed to the crank b.
The glass to be bevelled is placed on the rotating tables ii which are preferably
covered with india rubber felt or other suitable substance to prevent the glass from
slipping and held down by the plattensj j the pressure of which on the glass is
adjusted by the screws operated by the hand wheels. The arms m m carrying
the screws are made adjustable in the pillars n n which rotate in sockets in the
bed plate o to allow the center of the plattens to be placed over the center of the
sheet of glass while being bevelled different plattens being used to suit different
sized sheets of glass. The tables ii are mounted on turntables on the slides p p
and are moved to or from the wheels d d by the screws o̟ 7 and hand wheels ↑ "two
sheets being placed on each table so that four sheets of glass are operated on at
once.. When one edge is bevelled the tables ii are drawn back and rotated so as
to bring a fresh edge into the position for bevelling.
Circular sheets of glass are bevelled by rotating the tables ii and oval or
irregular sheets by advancing or withdrawing and rotating the tables at the same
time the feeding may be done automatically if desired as on lathes shaping machines
and the like.
The spindles carrying the wheels d d are hollow and the sand and water or other
cutting or polishing material fed down the centre of the spindles and thrown on to
the work by the centrifugal action of the wheels.
To prevent the cutting material from getting on the slides we cover the same
with a casing of sheet metal s.
t is the main driving pulley v a standard carrying the upper bearing for the
crank. The spindles of the wheels d d are made square except at the bearings
for polishing and to enable the attendant to change the wheels d for polishing wheels
cleaning the same or other purposes it is only necessary to remove the nuts ww the
bar which carries the upper bearings of the spindles is then lifted off the spur
wheels and the wheels d withdrawn from the spindies the fresh wheels
substituted and the spur wheels and bar replaced the whole operation only taking a
few minutes.

page_text: Instead of making the portion of the apparatus carrying the wheels d d to
reciprocate we may make the said wheels rotate only and cause the tables iion
which the glass is held to move backwards and forwards or both the slide a and the
tables i may have a reciprocating motion in opposite directions. Or we may
dispense with the wheels d d and use instead thereof two sliding pieces of metal or
other suitable material reciprocating in opposite directions and suitably bevelled on
the edges thereof.
Again by placing the wheels ee above the bar the upper surfaces of the
wheels d d may be made available for bevelling or grinding thus enabling six sheets
of glass or more to be operated on simultaneously the sheets being bevelled on the
upper surface of the wheels being held on a suitable table pivoted to two pillars
(somewhat in the way an ordinary toilet mirror is mounted) and a suitable weight
or spring presses the glass on to the wheels.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is
1. In an apparatus for bevelling and grinding glass and other materials the use
of grooved wheels to which is imparted a combined reciprocating and rotating
motion substantially as described and shewn.
JI. In an apparatus for bevelling and grinding glass and other substances the
combination of a reciprocating sliding piece carrying a series of grooved wheels
with a means of imparting a rotary motion to the said wheels substantially as
described.
III. In an apparatus for grinding and bevelling glass and other substances the
combination of a series of rotating grooved wheels with tables for holding the.
glass a reciprocating motion being given to either the said tables or wheels
or both.
IV. In an apparatus for bevelling and grinding glass and other substances the
combination of a reciprocating sliding piece or pieces with one or more revolving
tables mounted on slide rests substantially as described.
V. In an apparatus for bevelling and grinding glass and other substances the use
of two pieces of metal or other suitable material having the edges thereof bevelled
and reciprocating in opposite directions substantially as described.
Dated this 26th day of May 189
ERNEST SALAMAN,
Patent Agent to the British and Foreign Patents and Trade Marks Society,
61 and 62, Chancery Lane, London, W.C.,
Agent for Applicants.