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Патент USA US3087300

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April 30, 1963
3,087,283
l. A. HECK ETAL
APPARATUS FOR BRUSH POLISHING GLASSWARE
Filed Jan. 13, 1961
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3 Sheets-Sheet l
April 30, 1963
l. A. HECK Em.
3,087,283
APPARATUS FOR BRUSH POLISHING GLASSWARE
Filed Jan. 13,. 1961
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April 30, 1963
l. A. HECK ETAL
3,087,283
APPARATUS FOR BRUSH POLISHING GLASSWARE
Filed Jan. 15, 1961
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3 Sheets-Sheet 3
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3,587,283
Patented Apr. 30, 1963
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3,087,233
inner cross members 13 and 14, upper cross members 15
and 16, and a second set of vertical supports 17 and 18.
APPARATUS FÜR BRUSH PÜLISHENG
GLASS‘WARE
The p-reviously mentioned suppor-ting members are prefer
Irving A. Heck, Buffalo, NX., and Wiliiam G. Humphrey,
an integral frame structure to provide a base B for the
apparatus of our invention.
ably formed of angle iron or the like and are welded into
Toledo, Uhio, assigner-s to Owens-Illinois Glass Com
pany, a corporation of Ghio
Filed Jan. 13, 1951, Ser. No. 82,449
6 Claims. (Cl. 51u84)
This invention relates generally to apparatus for polish
ing glassware, and more particularly to apparatus for
polishing the grind marks on cut glassware.
Cut glassware is formed by cutting the design into the
glassware by means of an abrasive wheel or the like and
then polishing the gray cut surfaces formed by the ab
Referring to FIG. 2, the glassware G having gray cut
surfaces 9, which are to be polished, is preferably sup
ported by a vacuum-type chuck C. The chuck C com
prises a resilient pad 27 mounted on the end of a shaft
25 having an internal bore 26 extending therethrough.
The bore 26 communicates at one end of the shaft with
the resilient pad 27 and at the other end with a rotatably
mounted, hermetically sealed connector 2S. The con
15 nector is adapted to remain stationary when the shaft 25
rotates. The connector 28 has a tubular extension 29
which is operatively connected to a conventional means
for creating a vacuum, such as a vacuum pump. The
rasive wheel to form a smooth, transparent surface. Our
invention is directed primarily to apparatus for simultane
ously polishing transversely extending cuts and longitudi
shaft 25 is journaled in bearing blocks 30 and 31 which
nally extending cuts in an expeditious, efficient manner,
without manual assistance. Prior art devices are objec 20 are mounted on a bearing block mounting bracket 22.
The bearing block mounting bracket 22 is supported be
tionable in that they require an excessive amount of
tween two vertical supports 20 and 21 which are secured
manual assistance, and are generally too slow to be prac
at their upper ends to the upper cross member 15 and at
tical for large volume commercial production. Prior art
their lower ends to the inner cross member 13. The
devices are also limited by the width of their brushes in
the length of cuts that they can polish. They are also 25 shaft 25 has pinned thereto, intermediate bearing blocks
3€) and 31, a cam 32 having a cam surface 33. A fol
limited in that they cannot satisfactorily polish cuts which
lower bracket 34 is rotatably mounted on the shaft 25
extend perpendicular to each other. Additionally, the
intermediate the cam 32 and the bearing block 31. The
means for supplying polishing compound to the workpiece
in prior art devices are unsatisfactory in that they fail to
supply polishing compound of uniform consistency.
follower bracket 34 has two cam followers 35 projecting
30 longitudinally into contact with the cam surface 33. See
Accordingly, it is an important object of our invention
to provide glassware polishing apparatus having brushes
positioned for simultaneously polishing longitudinally and
FIG. 3. Secured to the other end of the follower bracket
is a sprocket 36 which is provided for the purpose of
driving the follower bracket relative to the earn 32, in a
manner to be described. 'I‘he cam is urged against the
transversely extending glass cut surfaces.
Another object of our invention is to provide improved 35 cam followers 35 by means of a spring 31a, which bears
glassware polishing apparatus having independent polish
ing compound supply means capable of supplying polish
against the bearing block 3-1 and a spur gear 38. The
spur gear 38 is pinned to the shaft 25. The shaft 25 is
driven by means of an electric drive motor 39 which
ing compound of uniform consistency to the work-piece.
drives through a sprocket 40, a chain 41, and a second
A further object of our invention is to provide improved
glassware polishing apparatus having a longitudinally os 40 sprocket 42. The second sprocket 42 is pinned to a drive
shaft 43 which is journaled in bearing blocks 45 and 46.
cillating chuck for increasing the length of the cuts which
The bearing blocks 45 and 46 are secured to the bearing
may be polished.
block mounting bracket 22. The drive shaft 43 is main
The specific nature of this invention, as well as other
tained in place by means of collars 47 which are pinned
objects and advantages thereof, will become apparent to
those skilled in the art from the following detailed de 45 thereto. The drive shaft 43 has pinned thereto a pinion
gear 44 which runs in mesh with the previously described
scription taken in conjunction with the annexed sheets of
spur gear 33 mounted on the shaft 25.
drawings, on which, by way of example only, the preferred
Accordingly, the sha-ft 25 is rotated by means of the
embodiment of this invention is illustrated.
drive motor 39, driving through the pinion gear 44 and
In the drawings:
FIG. 1 is a front elevational view of the apparatus of 50 the spur gear 38. The aforementioned gear train is
ratioed so that the drive motor will drive the shaft 25
our invention with the chuck drive means removed for
at a relatively slow rate. The drive shaft 43 has also
purposes of clarity;
pinned thereto a sprocket 4S which is -in line with the
FIG. 2 is a vertical, sectional View taken along the line
previously mentioned sprocket 36, located on the shaft
2_2 of FlG. l with the side brush drive means removed
55 25, and operatively connected to the sprocket 36 by a
for purposes of clarity;
chain 49. The sprocket 48 and the sprocket ‘36 are sized
FIG. 3 is a top plan view of the apparatus of our in
so `as to have `a different transmission ratio than that
vention with parts broken away to better show the side
of the pinion gear 44 `and spur gear 3S, whereby the fol
brush drive means;
lower bracket 34, which is secured to the sprocket 36,
FIG. 4 is a partial/plan view showing the side brushes
60 will rotate at a different speed than the cam 32 which
engaging glassware having a conical side wall; and,
is pinned to the shaft 25. This differential in rotational
FIG. 5 is a schematic view illustrating the polishing
compound supply means of our invention.
Basically, our invention in its preferred form comprises
a base B, a slowly rotating, oscillating chuck C for sup
porting the glassware, a ñrst brush 1 positioned to polish 65
longitudinally extending cuts, second brushes 2 positioned
to polish transversely extending cuts, and polishing com
pound supply system for supplying compound to the sur
speed will cause the spring-loaded shaft 25 to oscillare
longitudinally yas the cam `followers 35 ride on the cam
surface 33. It is to be understood, of course, that other
conventional means can be used to provide oscillatory,
longitudinal motion of the shaft 25.
Referring to FIGS. 2 and 3, it may be noted that the
first brush 1 is rotatably mounted in plane parallel to
and in line with the axis of rotation of the glassware G
face of the glassware and brushes when they are in polish
70 and chuck C. The means for supporting and rotating the
ing relationship,
first brush 1 is described hereinafter. A mounting bracket
Referring to FIGS. 1 and 2, the base B comprises four
55 having a vertical mounting surface 56 is positioned or
vertical support legs 10, outer cross members 11 and v12.,
3,087,283
3
4
supported by the upper cross members 15 and i6. An
electric motor 57 is secured at one end of the mounting
bracket 55. A bearing bracket 58 is secured to the vertical
movement, and also by the backward movement of the
brushes. As has been described before, the brushes are
maintained in polishing engagement with the glassware
mounting surface 5‘6.
by the air cylinders ‘84.
A hinge shaft 59 is journaled in
A relatively low amount of air
the bearing bracket 58 and hingedly supports one end
of :a support frame or platform 60. The support frame
press-ure, preferably about 8 psi., is supplied to the air
cylinders, thereby providing an air cushion which will
60 has journaled at its outer end a brush shaft 61. The
brush shaft `61 has secured thereto at one end a pulley
62 and at the other end a conventional bristle polishing
brush ‘63. The bristle brush 63, which preferably corn
pr-ises one or more circular -bristle brushes placed in face
allow the brushes to move backwardly as the glassware
having a conical side wall is -advanced into engagement
with them.
to-face relationship, is secured in place by spindle hous~
ing 69 pinned to the shaft 61. The end of shaft 59 has
pinned thereto an inner pulley 53 and an outer pulley S4.
The brush shaft 61 is driven by «means of the electric
motor 57 which -drives the -outer pulley 54, located on the
Referring to FIG. 5, the polishing compound supply
means comprises a drain or collection tank 90 positioned
to collect the polishing compound 9‘7 after it has been
used. It may be noted that the polishing compound 97
preferably comprises water, cerium oxide suspended in
water, and a conventional anti-foaming agent. A return
line 91 directs the compound from the drain tank to a
sump 92. The sump has mounted therein a paddle wheel
hinge shaft 59, through a pulley 50 and belt 51. Rota
tional motion is supplied «from the hinge shaft 59 to the
agitator 93 which stirs up the compound and prevents
the cerium oxide from `going out of suspension. A line
brush shaft 61 by means of the inner pulley 53, a belt
52, and the pulley 62. The brush 63 is lowered and raised 20 94 connects the compound with the sump to the input
into and out of engagement with the glassware G by
side of a pump 95. The output side of the pump lis con
nected to at supply line 9'6 which directs the compound to
means of a air cylinder 67, which is connected at one end
the glassware. See FIG. l.
to an intermediate portion of the support frame 60‘ by
In operation, the operator places the glassware on the
means of an eye 64 secured to the frame and a clevis
formed on that end of the air cylinder, the eye and clevis 25 resilient pad 27 and actuates the vacuum creating means
being secured together by a conventional hinge pin. The
other end of the air cylinder 67 is secured to a vertical
to thereby hold the glassware to the resilient pad. The
motor 39 is energized to slowly rotate the shaft 25 and
support 65 by means of an eye 66 formed on a vertical
-support and a clevis `68` located on the air cylinder, the eye
pump 95 and paddle wheel agitator 93 are energized and
to cause it to oscillate in a longitudinal direction.
The
‘66 and the clevis 68 being secured together by a conven 30 polishing compound is directed through the conduit 96
tional ln'nge pin.
to the glassware G and the brushes. The drive motors
Referring to FIGS. 1 `and 3, it may be noted that the
88 and 57 `are energized to drive the first and second
second brushes 2 are respectively rotatably mounted in
brushes. The brushes are then moved by their respective
planes which are perpendicular to the side wall of the
air cylinders into engagement with the glassware, and
glassware G. The respective structures for supporting 35 the polishing operation commenced. In stopping the
and rotating are mirror images of each other, and ac
polishing operation the previously described cycle of
cordingly, only one will be described hereinafter. Re
events is reversed. The timing means for operating the
ferring to FIG. 3, an adjustable mounting platform 70 is
previously described elements for our invention are sui-t~
adjustably secured to the cross members 11 and 14 by
able conventional means and comprise no part of this in
bolts 73 which extend through slots 71 and 72 formed 40 vention.
in the mounting platform. The mounting platform 7 0' has
It will, of course, be understood that various details
mounted thereon `two bearing brackets 74 which have
vof construction may be modified through a wide range
journaled therein> a hinge shaft 76. A hinge shaft 76
without departing from the principles of :this invention,
hingedly supports one end of a frame 75. The frame 75
and it is not, therefore, the purpose to limit the patent
has journaled at its outer end -a brush supporting shaft 79. 45 granted hereon otherwise than necessitated by the scope
The shaft 79 has a pulley ‘81 secured thereto at one end
of the appended claims.
and a conventional bristle polishing brush 80‘ at the other
We claim:
end. The »brush ‘80, which preferably comprises one or
l. Apparatus for polishing glassware having a side
more circular brushes placed in face-to-face relationship,
wall comprising, sa base, a rotary chuck mounted `on said
is maintained on the shaft 79 by means of spindle hubs 50 base for supporting said glassware, means for rotating said
86a. A pulley 81 is connected by `a belt `81a to an inner
pulley 77 mounted on the shaft 76. The shaft 76 also
has mounted thereon an outer pulley 78. Depending rods
chuck, a «first brush mounted for rotation with its axis
of rotation substantially perpendicular to the 'axis of ro
tation of said chuck, means yfor rotating `said first brush,
86 extend downwardly from the platform 70 and support
means for moving said first brush into and out of polish
an electric drive motor §88. The drive motor 88 drives 55 ing engagement with said glassware, at least one second
the outer pulley 718 through a pulley 87 and a belt 89.
brush mounted for rotation with its axis of rotation sub
The frame 75 is pivoted to move the brush 80 into and
Stantial-ly parallel to the side wall of said glassware, means
out of engagement with the glassware G by means of an
for rotating said second brush, means for moving said
air cylinder 84. One end of the air cylinder ‘84 is secured
Second brush into and out of polishing engagement with
to an intermediate portion of the frame 75 by means of a 60 said glassware, «and means for supplying polishing com
clevis `83 mounted on the frame and an eye '83a located
pound of uniform consistency through a conduit to said
on the end of the air cylinder, the clevis and eye being
glassware and brushes.
secured together by a conventional hinge pin. The other
2. Apparatus as defined in claim l, plus means for
end of the air cylinder ‘84 is secured to the platform 70
oscillating said chuck along its ‘axis of rotation, thereby
by -a clevis 82 mounted on the platform and an eye 82a 65 allowing said brushes to polish a wider area.
formed on the 'air cylinder, the clevis> and eye being
3. Apparatus for polishing glassware having a side wall,
secured together by a conventional hinge pin.
comprising, a base, a vacuum `chuck rotatably mounted
In FIG. 4, the second brushes 2 are shown positioned
on said base, said chuck being adapted to support said
about glassware G having a conical side wall. The second
brushes 2 can `be in yline perpendicular to the side wall of 70 glassware with the laxis of said glassware in line with the
axis of rotation of said chuck, means for slowly rotating
the glassware by adjusting the respective platform ’70K rela
said chuck, a first brush, a shiftable support for rotatably
tive to the base B. The longitudinal movement of the
mounting said iirst brush with its axis of rotation substan
glassware G having a conical side wall of the type illus
tially perpendicular to the axis of rotation of said chuck,
ltrated in FIG. 4 is compensated for by the flexible bristle
brushes which allow a certain amount of longitudinal 75 means for rotating said first brush, means for shifting
3,087,283
5
said support to move said ñrst brush into and out of
polishing engagement with said glassware, at least one
second brush, 'a shiftab‘le second support for rotatably
mounting said brush with its axis of rotation substantially
parallel to the side Wall of said glassware, means for ro
tating said second brush, means for shifting said second
support `to move said second brush into and out of polish
ring engagement with said glassware, and means for
supplying polishing compound of uniform consistency
through a conduit Ito said glassware and brushes.
10
4. Apparatus as ydefined in claim 3, plus means for
oscillating said chuck >along its axis of rotation, thereby
-allowing said brushes to polish a Wider area.
5. Apparatus as defined in claim 3, wherein said last
mentioned means includes a sump, an -agitator mounted 15
in `said sump for stirring said compound, 'thereby keeping
said compound at a uniform consistency, a drain pan for
6
collecting used compound for return to said sump, and a
pump for pumping compound through a conduit to said
glassware and brushes.
6. Apparatus as `defined in claim 3, wherein said shift
able supports comprise hinged platforms and the means
for shifting said supports comprise air cylinders opera
Itively connected to said hinged platforms.
References Cited in the ñle of this patent
UNITED STATES PATENTS
562,268
1,409,888
1,652,494
2,170,610
2,700,255
Ashton ______________ __ June
Taylor ______________ __ Mar.
Parker _______________ __ Dec.
Schutz _______________ __ Aug.
Meier ________________ __ Jan.
16,
14,
13,
22,
25,
1896
1922
-1927
1939
1955
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