Improvements in or relating to the Finishing of Table Glasses and the like, and in Apparatus therefor.
Year: 1893

page_text: Date of Application, 19th June, 1893
Complete Specification Left, 26th Aug., 1893-Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Finishing of Table Glasses and
the like, and in Apparatus therefor.
I, LEON HAVAUX, of St. Ghislain, in the Kingdom of Belgium, do hereby
declare the nature of this invention to be as follows
The object of this process is to straighten, to round off and to polish the cut
edges of table glasses, cut by any means or process and especially those cut by my
electric process.
Each of the three operations mentioned above is preferably performed on a table
made of three circular iron plates placed horizontally one above the other and
supported on four legs and held apart by distance pieces.
A certain number of vertical shafts held in suitable bearings provided in the
plates are supported at their lower pointed ends on screwed spindles which may be
adjusted by a hand wheel and secured in position by a nut. These spindles serve
to raise or lower the shafts; the latter being provided with pulleys and carrying
cups at the top. Each of these cups is provided with three set screws and carries a
wooden holder into which are placed the tumblers to be finished off. The cups are
placed centrally on the shafts, but are preferably so arranged as to form a spiral
curve relatively to the centre of the table.
Another vertical shaft is provided with two pulleys, the first being driven by a
belt from a transmission shaft and the other being arranged to drive all the pulleys
by a single belt.
A column fixed centrally on the table herein before described is made to carry a
copper cylinder adapted to be raised or lowered on the said column and is held in
position by means of adjustable collars provided with set screws. Sectors also made
of copper and separated one from the other are adapted to be displaced along the
circumference of the cylinder in a groove formed by two flanged plates and the
cylinder. The sectors have each a tail-piece supporting by two springs a gripper
the jaws of which are made of indiarubber, and carry a pane of hardened glass.
The steel springs are secured in place by screws in such a manner as to cause the
flat piece of glass to constantly exert a certain pressure against the edge of the
tumbler to be evenly ground.
The above mentioned panes of glass are guided laterally at their extremities by
means of short iron uprights which are fixed vertically on the table between the
cups. For this purpose the panes are supported in grooves provided in forks of
hard wood the lateral external edges of which are slightly inclined toward the
vertical plane passing through the axis of the said forks.
The latter are brought towards the sectors by elastic bands the ends of which
are secured to the forks and wind round a pin on the tail-piece of the sectors.
After the glasses have been placed in the wooden holders which are rotated
around their axes the edges of the said glasses will be evenly ground through being
in contact with the panes of glass. The glasses are placed in or taken out of the
holders in the following manner.
One of the sectors is removed to a neutral
position where no operation is to be performed. The glass the edge of which has
been ground, is. taken out of its holder the latter being held by the left hand to
enable the glass to be taken out and to be replaced by another. When this has
been done the holder is set free and allowed again to rotate and the next sector is
then moved round' till the square of glass carried by it takes up its position over
the glass which has just been placed in the holder; the glass contained in the next
holder may now be removed and replaced by another, and the above described
operation is repeated in the same manner as before.

page_text: The glasses to be ground at the edges being placed in a spiral line grind at each
movement of the sectors over a fresh part of the pane of glass, so as to obtain a
larger wearing surface which allows the panes to be used for a much longer time
than otherwise.
The construction of the apparatus may be greatly varied; for instance the shafts
may be rotated by means of friction discs rolling on the periphery of a large disc
keyed on the shaft; and again the manner in which the panes of glass are displaced
may be modified by connecting the grippers of the latter to the collar of an eccentric
keyed on an extension of the shaft, so as to cause the said movement to be continuous
and automatic. But if the operation is to be performed by hand, the eccentric
must be fiee on a shaft or on a fixed collar on the shaft of the machine.
ROUNDING OFF THE EDGES.
The apparatus for rounding off the edges after the tops had been ground evenly,
consists of a table similar to the one described in the previous operation only in this
case the cups and shafts are placed concentrically on the table instead of in a spiral
line as before. The shaft is extended above the table and may be provided with
an obliquely arranged disc adjustably fixed by means of set screws at any suitable
height, and serving as a medium for giving a reciprocating movement to the levers
mounted on columns placed on the radial lines drawn from the central shaft through
the centres of the shafts.
The levers are provided at one of their extremities with small rollers in contact
with the disc, while at their other extremities they carry iron frames. The latter
are provided with four screws which terminate in hooks and retain between them
two indiarubber rings placed inside each frame in such a manner as to allow a
certain torsional twisting of the said india rubber rings. The latter are provided for
the purpose of supporting tubes of hardened glass resting against the outer and the
inner edge respectively of the glass so as to round off the said edges. The twisting
of the indiarubber rings causes the glass tubes to press against the edges of the
glasses.
In order to place a glass in the holder the frame fastened to the lever is lifted up
by hand and after having inserted the glass the frame is allowed to drop down care
being taken to bring the tubes against the outer and inner edges of the glass
respectively.
Meanwhile the roller has come into contact with the obliquely placed disc from
which the lever receives its oscillating movement. The tubes press against the
edges while moving up and down in a vertical plane laid through the axis of the
tubes and at the same time oscillate round the centre of the indiarubber ring, this
special movement causing the sharp edges of the tumbler to be rounded off.
W. P. THOMPSON & BOULT,
Of London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to the Finishing of Table Glasses and
the like, and in Apparatus therefor.
I, LÉON HAVAUX of St. Ghislain in the Kingdom of Belgium, do hereby
declare the nature of this 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 level, round off and polish the edges of table
glasses such as tumblers, cut by any means or process and especially those cut by
my electric process as described in my Specifications Nos. 17691" and 6544º3.
For this purpose I employ a table consisting of three circular, horizontal,
superposed plates P P¹ P" preferably of iron and supported on say four legs and
held apart by distance pieces E.
Any desired number of vertical spindles A are supported in suitable bearings
provided in the plates P P and at their lower pointed ends on screws C each of
which may be adjusted in the plate P" by its head or hand-wheel and secured in
position by a nut. The screws serve to raise or lower the spindles A which are
provided with pulleys p and carry cups at the upper ends. Each of these cups is
provided with say three set screws and carries a preferably wooden holder b 61-630
into which are placed the glasses to be operated on. The cups are placed
centrally on the shafts A, which are preferably arranged in the table or plate P in
the form of a spiral as shown in Figure 2.
A vertical shaft B is provided with two pulleys h h¹; the first being driven by a
belt from a motor or transmission shaft and the other being arranged to drive all
the pulleys p by a single belt as indicated in Figure 2.
A standard fixed centrally to the plate P hereinbefore described carries a
preferably copper cylinder L adapted to be raised or lowered on the said standard
and is held in position by means of adjustable collars k¹k" provided with set
Bcrews.
Sectors S S S also preferably made of copper and separated one from another
are adapted to be displaced along the circumference of the cylinder in a groove
formed by two flanged plates and the cylinder L. The sectors have each a
lugr supporting two springs g g' a gripper H, the jaws of which are made of india-
rubber and carry a plate or piece V of hardened glass.
The steel springs a g' are secured in place by screws in such a manner as to cause
the flat glass plate V to constantly exert a certain pressure against the edge of the
glass or tumbler to be ground.
The above mentioned glass plates V are guided by means of short uprights ff
fixed on the plate P between the cups r r. For this purpose glass plates are
supported in grooves provided in forks F F of preferably hard wood the lateral
external edges of which are slightly inclined toward the vertical plane passing
through the axis of the said forks.
The latter are drawn towards the sectors S S₁ S* by elastic bands m the ends of
which are secured to pins or equivalent K rigid in the forks and pass round a pin
on the lugs n of the sectors.
After the glasses have been placed in the wooden holders which are rotated
around their axes, the edges of the said glasses will be evenly ground through being
in contact with the glass plates. The glasses are placed in or taken out of the
holders in the following manner. The sector S is moved round till it occupies the
position indicated by the letter O in Figure 2. The glass the edge of which has
been ground, is taken out of its holder b, the latter being held by the left hand to
enable the glass to be taken out and to be replaced by another. When this has
been done, the holder bis released and allowed again to rotate and the sector S¹ is
then moved round till the glass plate carried by it takes up its position over the
glass which has just been placed in the holder b; the glass contained in the next

page_text: holder may now be removed and replaced by .another. The sector S' is now
moved into the position of S¹ and the above described operation is repeated in the
same manner as before till the work is completed.
The glasses to be ground at the edges being placed in a spiral line grind at each
movement of the sectors over a fresh part of the glass plate so as to obtain a larger
wearing surface which allows the glass plates to be used for a much longer time
than otherwise.
The construction of the apparatus may be greatly varied; for instance the
spindles A may be rotated by means of friction discs rolling on the periphery of a
large disc keyed on the shaft B; and again the manner in which the glass plates V
are displaced may be modified by connecting the grippers of the latter to the strap
of an eccentric keyed on an extension of the shaft B so as to cause the said
movement to be continuous and automatic. But if the operation is to be performed
by hand, the grippers are connected either to an extension or to a fixed collar on
the shaft B.
ROUNDING THE EDGES.
The apparatus for rounding the edges after they have been ground evenly,
consists of a table similar to the one described in the previous operation. Only in
this case the cups and spindle A are placed concentrically on the table P instead
of spirally as before. The shaft B is extended above the plate P and is provided
with an obliquely arranged disc or cam X adjustably fixed by means of set screws
at any suitable height, and serving as a medium for giving a reciprocating move-
ment to the levers Z mounted on standards Y arranged on radial lines drawn from
the central shaft B through the centres of the spindles A. The levers Z are
provided at one extremity with small rollers V in contact with the disc X, while at
their other extremity they carry frames W. The latter are provided with four
screws w which terminate in hooks and retain between them two indiarubber rings
placed inside each frame in such a manner as to allow a certain torsional or twisting
movement of the said rings. The latter are provided for the purpose of supporting
tubes or rods t t of hardened glass resting against the outer and the inner edge
respectively of the glass so as to round off the said edges. The twisting of the
indiarubber rings causes the glass tubes or rods to press against the edges of the
glasses.
In order to place a glass in the holder b the frame W fastened to the lever Z is
lifted up by hand and after having inserted the glass, the frame is allowed to drop
down care being taken to bring the tubes or rods against the outer and inner edges
of the glass respectively.
Meanwhile the roller V comes into contact with the oblique disc ✗ from which
the lever Z receives its oscillating movement. The tubes or rods t t' press against
the edges while moving up and down in a vertical plane extending through the
axes of the tubes and at the same time oscillate round the centre of the indiarubber
ring, this special movement causing the sharp edges of the tumbler to be
rounded off.
POLISHING.
The polishing apparatus is constructed on the same principle as the one for
rounding the edges, but in this case the glass tubes or rods are preferably replaced
by wooden sticks provided with a piece of cork coated with moist tripoli.
The

page_text: over said edges while the glasses are being rotated plates tubes or rods of glass
covered or not with a polishing medium substantially as described.
2. In apparatus for levelling or finishing the edges of table glasses such as
tumblers and the like the combination with a revolving cup or glass holder of glass
plates such as V pressed against the edges of the glasses by means of spring
grippers such as g H connected to sectors such as S or to an eccentric ring which
sectors or eccentric ring may be moved either by hand or automatically for each
operation substantially as and for the purpose described and illustrated in the
accompanying drawings.
3. In apparatus for finishing the edges of table glasses such as tumblers and the
like the combination with a revolving cup or glass-holder of two glass tubes or rods
having a reciprocating movement one of the said tubes or rods being applied on the
outer edge and the other to the inner edge substantially as and for the purpose
described and illustrated in the accompanying drawings.
4. In apparatus for finishing the edges of table glasses such as tumblers and the
like the combination with a revolving cup or glass holder of two wooden sticks provided
with cork pieces adapted to be coated with moist tripoli one stick and cork being
applied to the outer edge and the other to the inner edge of the glasses substantially
as and for the purpose described and illustrated in the accompanying drawings.
5. In apparatus for levelling or finishing the edges of table glasses such as
tumblers and the like the successive displacement of glass plates such as V in a
circle eccentric to the centre of the apparatus each time after finishing a glass for
the purpose of varying the wearing surface of the plates substantially as described
and illustrated in the accompanying drawings.
6. The combination and arrangement of parts constituting the complete apparatus
for levelling the edges of table glasses such as tumblers and the like substantially
as described and illustrated in Figures 1 and 2 of the accompanying drawings.
7. The combination and arrangement of parts constituting the complete apparatus
for rounding or polishing the edges of table glasses such as tumblers and the like
substantially as described and illustrated in Figures 3 and 4 of the accompanying
drawings.
Dated this 26th day of August 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.