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Патент USA US3067866

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Dec. 11, 1962
B. |_. GAMBLE
3,067,856
SHEET FEED CONTROLLING MEANS
Filed Nov. 14, 1958
9 Sheets-Sheet 1
FIG. 1
ENAMEL BAKING OVEN
COATING MACHINE
FIG- 2
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Dec. 11, 1962
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SHEET FEED CONTROLLING
Filed Nov. 14, 1958
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Filed NOV. 14, 1958
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INVENTOR
BURTON L. GAMBLE
Dec. 11, 1962
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Filed-Nov. 14, 1958
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SHEET FEED CONTROLLING MEANS
Filed Nov. 14, 1958
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SHEET FEED CONTROLLING MEANS
Filed NOV. 14, 1958
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United States Patent 0
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3,067,856
Sl-EET FEED CONTRGLLING MEANS
Burton L. Gamble, Hinsdale, Ill., assignor to Continental
Can Company, inc, New York, N.Y., a corporation of
New York
Filed Nov. 14, 1958, Ser. No. 774,000
11 Claims. (Cl. 198-102)
3,057,856
Patented Dec. l1, 1%.?
Another object of the invention is to provide a feed
mechanism for feeding sheets rapidly from a sheet coat
ing machine into an oven wherein the sheets are rotated
from a generally horizontal position to a generally up
standing position, the feed mechanism including a brake
mechanism of the type which incorporates a sheet sup
port in the form of a table, the table having mounted
therein permanent magnets which place a retarding force
on the sheets as they pass thereover, and there being as
The invention relates generally to the art of manufac 10 sociated with the permanent magnets compressed air jets
which are actuated in timed relation to the engagement
turing cans and primarily seeks to provide novel means
of the relatively stationary sheets by wickets of a second
for quickly stopping the movement of coated sheets as
feed conveyor so that the restraining forces of the mag
they pass from feed means or" a sheet coating machine and
are engaged by a conveyor for a baking oven.
nets on the sheets are substantially removed and the
In the making of can bodies which are provided with 15 wickets may remove sheets from the sheet support with
an internal lining, the can bodies are formed from sheets
which have been previously coated on one side. In or
out undue resistance.
der to facilitate the coating of such sheets, the sheets are
?rst passed through a sheet coating machine and are then
proved braking mechanism to be positioned between two
tively high.
table, there being incorporated in the plate permanent
Another object of this invention is to provide'an im
feed conveyors whereby a sheet may be rapidly fed by a
fed from the sheet coating machine on a feed conveyor. 20 ?rst feed conveyor and is then suddenly decelerated prior to
engagement by the second feed conveyor, the brake mecha~
In order that the production of the sheet coating machine
nism including a supporting plate in the form of a feed
may be a maximum, the rate of feed of the sheets is rela
magnets for placing a retarding force on a sheet moving
thereto, it is necessary that they be passed into an oven. 25 thereover to rapidly decelerate the sheet, and the plate
being so mounted whereby once a sheet is in overlying
At the present time coated sheets are passed through an
position for engagement by the second feed conveyor,
oven by using wickets which ?rst tilt the sheets from a
the sheet is elevated above the magnets so as to reduce
generally horizontal position to a generally upstanding
to a minimum the retarding force of the effect of the
position and then feed the sheets through the oven. In
magnets on the sheet whereby the sheet may be moved
order that the sheets may be engaged by the wickets
by the second feed means with a minimum of resistance.
of the oven feed, it is necessary that the sheets be sub
After the sheets have had the coating material applied
stantially stopped when engaged by the wickets. The
proper control of the feeding of the sheets into position
A further object of this invention is to provide an
improved brake mechanism to be used in conjunction'with
a feed system of the type which requires that sheets being
for engagement by the wickets is a problem.
35
fed be rapidly decelerated prior to the engagement by
In the feeding of sheets from the sheet coating ma
a second feed conveyor, the brake mechanism including
chine to the oven feed, if the sheets are fed too fast and
a stationary feed table having mounted therein suction
run into the support bar of the wicket, the leading edge
cups, the suction cups being communicated with a vac
of the sheet becomes damaged and the sheet must be
discarded. On the other hand, if the sheet is fed too 40 uum source by means of a valve which is so controlled
whereby the vacuum is produced in timed sequence to
slowly, the sheet does not fully enter the wicket and may
the feeding of a sheet over the suction cups, and there
be damaged in this manner. Further, there is the possi
being provided means for momentarily elevating the suc
bility that the sheet will not pass into the oven and thus
tion cups when the sheet is in overlying relation so that
An object of the invention is to provide a novel appa 45 the suction cups project above the feed table and the
desired suction between the suction cups and the sheet
ratus of the character stated including a sheet feeding
is obtained.
'
table which receives sheets from the sheet coating ma—
cause a jam.
chine, feeds and supports such sheets for engagement by
A still further object of this invention is to provide
wickets of the oven feed; the feed table being provided
in an apparatus of the character stated a novel brake
with brake means which are of such a nature whereby 50 mechanism for sheets which Will accomplish the rapid
they cause rapid deceleration of the sheets so that the
sheets are substantially stopped when engaged by the
wickets and such brake means being of such a nature
deceleration of sheets being fed at a rapid rate, the brake
mechanism including a pair of retarders disposed in op
posed relation and adapted to engage opposite side edges
of a sheet fed therebetween, and there being provided a
whereby at the time the sheets are engaged by the wickets
to be lifted thereby, the sheets are substantially released 55 mechanism for moving the retarders together in timed
relation to the positioning of a sheet therebetween and
by the brake means so that no undesired force is re
for releasing the retarders in timed relation to the en
quired on the part of the wickets to remove the sheets
gagement of the sheets by a second feed mechanism.
from the feed table.
Another object of this invention is to provide an im
With the above and other objects in view that will
roved feed mechanism for feeding sheets rapidly from 60 hereinafter appear, the nature of the invention will be
a sheet coating machine in a generally horizontal position
more clearly understood by following the detailed de
and through an oven in a generally upstanding position,
scription, the appended claims, and the numerous views il~
the sheet feeding means including a ?rst conveyor for
lustrated in the accompanying drawings.
moving sheets in processional order and in spaced rela
In the drawings:
tion in a generally horizontal plane, releasing the sheets 65 - FIGURE 1 is a schematic elevational view illustrating
from the ?rst feed means and applying a retarding force
the environment in which the invention is utilized. 7
on the sheets to rapidly decelerate the sheets, and then
FIGURE 2 is a'plan view of the assembly of FIGURE
releasing the sheets prior to engagement by a second feed
1 showing in cooperation with the feed mechanism there
means which includes wickets swinging about a horizontal
axis so that the wickets engage the relatively stopped and 70 of a form of the invention wherein the retarding force
is provided by magnets.
released sheets and lift and tilt the sheets for movement
FIGURE 3 is a view similar to FIGURE 2 and shows
through an oven.
3
3,067,856
a form of the invention wherein the retarding force is
provided by means of a vacuum.
FIGURE 1.4 is a plan view of a ?rst form of brake
mechanism and shows the speci?c details thereof including
the relationship thereof with respect to a wicket of the
oven feed.
4.
FIGURE 21 is a fragmentary transverse vertical sec
tional view taken along the line 21-21 of FIGURE 20
and shows the speci?c details of the mechanism for re
tracting magnets of the brake mechanism to positions be
low the feed table thereof whereby the magnets are ren
dered relatively ineffective.
FIGURE 22 is an enlarged fragmentary sectional view
FIGURE 5 is a fragmentary elevational view of the
taken along the line 22—22 of FIGURE 19 and shows
brake mechanism of FIGURE 4 and shows the manner
the manner in which a magnet is adjustably mounted on
in which a plate of the feed table of the brake mechanism
is elevated to remove a sheet resting thereon substantially 10 a support plate therefor.
FIGURE 23 is an enlarged fragmentary sectional view
in the range of the retarding force of the brake mecha
taken along the line 23—23 of FIGURE 19 and shows the
nism.
relationship between one of the magnets and the feed table
FIGURE 6 is a fragmentary sectional view taken sub
when the magnet is in an elevated position.
stantially upon the plane indicated by the section line
FIGURE 24 is an enlarged fragmentary plan view of
6-6 of FIGURE 4 and shows the manner in which com 15
the side portion of a brake mechanism corresponding to
pressed air is supplied in timed sequence to air nozzles for
the brake mechanism of FIGURE 19 and shows the gen—
the purpose of lifting a sheet resting on the feed table in
eral arrangement of the components thereof.
FIGURE 25 is a longitudinal sectional view taken
through the brake mechanism of FIGURE 24 along the
line 25-25 and shows the means for raising and lowering
FIGURE 7 is a plan view similar to FIGURE 4 and
the magnets in timed relation.
shows a second form of brake mechanism including the
FIGURE 26 is a transverse sectional view taken along
positioning of a wicket relative thereto.
the line 26-26 of FIGURE 24 and shows further the
FIGURE 8 is a fragmentary side elevational view of
the brake mechanism of FIGURE 7 with parts broken 25 relationship of the various components of the brake
mechanism.
away and shows the manner in which magnets at side
The general environment of the invention is best illus
areas of the brake mechanism are mounted for retraction
trated in FIGURES 1, 2 and 3 of the drawings. In the
below the feed table of the brake mechanism so as to
customary manufacture of can bodies having coated in
release a sheet lying on the feed table from the magnetic
30 teriors, there are ?rst provided coated sheets of the de
force of the magnets.
sired sizes. In order to apply the coating to these sheets
FIGURE 9 is an enlarged fragmentary vertical sectional
the sheets are passed through a coating machine 5 and are
view taken on the line 9--9 of FIGURE 7 and shows the
fed therefrom by means of a sheet feeder 6 which will
modi?ed form of valve mechanism for providing air jets
be considered a ?rst conveyor. After the sheets have
through the feed table and beneath a sheet lying thereon
been provided with the desired coating, it is necessary that
for the purpose of elevating the sheet relative to the mag
the sheets pass through a baking oven 7. The baking
nets.
oven 7 is provided with feed means in the form of a sec
FIGURE 10 is a plan view of a third form of brake
ond conveyor 8. The second conveyor 8 is a special con
mechanism and shows the speci?c details of retarders
veyor in that it is formed by a plurality of wickets 9, which
thereof which are disposed in opposed relation for engag
40 wickets are carried by transversely spaced conveyor chains
ing opposite side edges of a sheet.
10 passing over suitable sprockets 12. The sprockets 12
FIGURE 11 is a side elevational view of the brake
are in turn mounted on transverse horizontal shafts, such
mechanism of FIGURE 10 with portions broken away
as the shaft 11. The conveyor 8 is of such a nature where
and shows generally the details for operating the retarders.
by the wickets 9 pass about the axis of the shaft 11 and
FIGURE 12 is an enlarged fragmentary sectional view
when in a generally horizontal position, will lift and turn
taken on the line 12--12 of FIGURE 10 and shows the
a coated sheet from a generally horizontal position to an
speci?c cross section of the sheet engaging portion of one
upstanding position. Such sheets are then passed through
of the retarders.
the baking oven in a horizontal run 13 of the conveyor 8.
FIGURE 13 is an enlarged plan view of the central por
The horizontal run 13 is disposed uppermost and the
tion only of another form of ‘brake mechanism and shows
the speci?c arrangement of suction cups in the feed table 50 wickets returned in a second horizontal run 14 which is
disposed lowermost.
thereof.
The necessity of providing the coated sheets in quan~
FIGURE 14 is an enlarged fragmentary side elevation
tity results in the coated sheets being fed through the coat
view of the brake mechanism of FIGURE 13 and shows
ing machine at a very high rate. Thus the coated sheets
the speci?c details of the operating mechanism thereof.
FIGURE 15 is an enlarged fragmentary sectional view 55 are fed from the coating machine by the sheet feeder 6 at
a high rate. Inasmuch as the coated sheets are immedi
taken along the line 15_-15 of FIGURE 14 and shows
ately passed into the baking oven by being fed onto the
the speci?c details of one of the suction cups.
conveyor 8, it will be readily apparent that it will be nec
FIGURE 16 is an enlarged fragmentary sectional view
essary to suddenly decelerate the sheets in order that they
taken along the line 16—16 of FIGURE 14 and shows
the speci?c details of the operating mechanism of the 60 may stop their horizontal travel prior to engagement by
the wickets 9 in order that they may be properly picked
brake mechanism for effecting the timed elevation of the
up by the wickets 9 and transported through the baking
suction cups thereof.
oven 7. Furthermore, the coated sheets must be fed be
FIGURE 17 is an enlarged plan view of a side portion
tween the sheet feeder 6 and the conveyor 8 in timed re
of a brake mechanism corresponding to the central por
65 lation. If the sheets are fed too fast and too far into the
tion of FIGURE 13.
conveyor 8, the sheets will engage parts of the conveyor
FIGURE 18 is an enlarged elevational view of the
8 and damage the sheets. On the other hand, if the sheets
brake mechanism of FIGURE 17 and shows the speci?c
are fed too slow into the conveyor 8, they will not be
details of the operating mechanism thereof.
properly engaged by the wickets 9 and a jamming of the
FIGURE 19 is an enlarged plan view of a central por
tion of another form of brake mechanism and showing 70 conveyor 8 will result.
Disposed intermediate the sheet feeder 6 and the con
the arrangement of ?xed magnets with respect to a feed
overlying relation to retaining magnets thereof for elimi
nating the magnetic retarding force of the magnets on the
sheet.
table portion of the brake mechanism.
FIGURE 20 is an elevational view of the brake mecha
nism of FIGURE 19 and shows certain of the details of
the operating mechanism thereof.
veyor 8 is a brake mechanism 15 which constitutes the in
vention, the brake mechanism being of such a nature
whereby the sheets, as they are fed by the sheet feeder 6
75 toward the conveyor 8, will be decelerated so that the
5
soeasse
horizontal travel will have stopped by the time they are
6
of piping 34. Also connected to the control valve 33 is
a compressed air supply line 35 which may be connected
‘to any convenient compressed air source.
Secured to the channel frame member 24 in underlying
relation to the frame 27 are suitable mounting brackets
36 in which a transverse shaft 37 is journaled. The shaft
37 is generally aligned with the valve 33 which is sup
engaged by the wickets 9, and at the same time the sheets
will be released by the brake mechanism so that they may
be removed by the wickets 9.
In FIGURE 2 there is illustrated one form of the brake
mechanism 15. In this form the force for decelerating
the coated sheets is supplied by a plurality of magnets.
ported by a pair of plates 38, the plates 38 also being
The brake mechanism 15 of FIGURE 2 is merely an ex
secured to the channel frame member 24. Secured to
ample of the numerous forms which the invention may
take and includes a forward central brake assembly 16 10 the shaft 37 is a pulley 39 over which there is entrained
a drive belt 40 which will rotate the shaft 37 in timed
and a pair of side rear brake assemblies "'17.
relation to the actuation of both the sheet feeder 6 and
In FIGURE 3 of the drawings, the magnetic brake
the conveyor 8. The drive belt 40 may be either con
mechanism 15 has been replaced by a brake mechanism
nected ‘to a separate drive mechanism or to the drive
18 which operates on the principle of applying a suction
mechanisms for the sheet feeder 6 and the conveyor 8.
to the coated sheets so as to retard its horizontal move
Secured to the shaft 37 for rotation therewith is a cam
ment. The brake mechanism 181, like the brake mecha
Lil with which there is engaged a roller type follower
nism 15, includes a central forward brake assembly 19 and
42.. The follower 42 is part of an actuating mechanism
a pair of rear side brake assemblies 20.
43 for the valve 33.
At this time it is pointed out that in certain instances,
The sequence of operation of the brake assembly 26
particularly when narrow and relatively small sheets are
is that a coated sheet is fed thereonto by the sheet feeder
being conveyed, only the central forward brake assem
6 with the magnets 30 of the brake assembly 26 affecting
blies will be required. On the other hand, under certain
the deceleration of the coated sheet. The coated sheet
circumstances ‘only the rear side brake assemblies will
will be stopped in overlying relation to the brake mecha
be required. In other instances, particularly where the
nism 22 ‘for engagement by the wicket 9. Immediately
sheets are relatively large and of heavy gauge material,
prior to the stopping of the coated sheet and the engage
the entire brake mechanism will be required. It is also
ment of the coated sheet by the wicket9, the cam 41
pointed out at this time that one type of brake assembly
will actuate the valve 33 so as to supply compressed air
may be used for the forward central brake assembly and
to the air nozzles 31. The air nozzles 31 will then direct
another type of brake assembly may be used for the rear
jet streams of air against the underside of tne coated
side brake assemblies. In other words, a brake mechanism
sheet so as to elevate the coated sheet and overcome the
may be formed of any desired combination of magnetic
magnetic attraction of the magnet St} on the coated sheet.
and vacuum brake assemblies. It is to be understood,
Thus the coated sheet may be removed from the brake
however, that in each instance the brake assemblies of a
assembly 26 by the wicket 9 without applying any undue
brake mechanism will be so spaced so as to clear the
force on the wicket 9.
wickets 9. The general arrangements illustrated in FIG
The brake mechanism 22 also includes rear side brake
URES 2 and 3 are examples of such spacing.
assemblies 44. The rear side brake assemblies 44, with
In FIGURES 4, 5 and 6 there is illustrated a ?rst form
the exception of being right and left are identical. Ac
of the invention. The relative position of this form of
cordingly, only one will be described in detail. Each
the invention with respect to the coating machine and
rear side brake assembly 44 includes a frame 45 which
the oven has been, illustrated only by positioning a wicket
is secured to both the longitudinal frame member 25
9 with respect to the invention in a position for engaging
adjacent thereto and to the channel frame‘member 24.
a sheet and a sheet receiving table 21 which will receive
Overlying the frame 45 is a forward sheet support plate
sheets from the sheet feeder 6. The form of the inven
4-6 and a rear sheet support plate 47. The sheet support
tion illustrated in these ?gures is referred to in general
plates 46 and 47 are connected together by a transverse
by the reference numeral 22. The brake mechanism 22
horizontal hinge 48.
includes a frame which is a continuation of the sheet
The sheet support plate 47 is provided with a cut-out
feeder 6. The frame includes a transverse channel mem
429. The cut-out 49 provides clamps for a guide 5%. The
her 24 and longitudinal frame members 25. The trans~ "
guide Sit is a side guide for the coated sheets to assure
verse channel member 24 supports the table 21 and the
the proper alignment of the coated sheets on the brake
forward central brake assembly 26 of the brake mecha
mechanism 22.
nism 22.
Underlying the central portion of the sheet support’plate
The brake assembly 26 includes a generally triangular
47 adjacent the guide 5d are suitable permanent magnets
frame 27 which supports a generally triangular mounting
52. The magnets 52 are secured to the frame 45 and
plate 29 in which there is seated a plurality of permanent
magnets 36}, the arrangement of the permanent magnets
30 being best illustrated in FIGURE 4. The plate 29 is
supported thereby. Inasmuch as the sheet support plate
47 normally directly overlies the permanent magnets 52,
aligned with the plate 21 and functions as a temporary
coated sheets moving over the sheet support plate 457
sheet support prior to the engagement of the sheet by
will be affected by the magnetic attraction of the magnets
52 and this magnetic force thereon will effect the deceler
the wicket 9. As the coated sheets pass on to the plate
29 the magnetic attraction of the magnets 36 on the coated 60 ation of the coated sheets.
sheet will resist the horizontal sliding movement of the
Disposed along opposite sides of the brake mechanism
sheet over the plate 29 and serves to bring the sheet to
22 is a base structure 53 which may be part of the oven
a stop before it reaches the conveyor chains 10.
'7. Mounted on the base structure 53 is an upright sup~
The magnetic attraction of the magnets 30 on the coated
port 54 which extends beneath the sheet support plate
sheet will be relatively great and if it were necessary for 65 47. The support 54 carries a transverse shaft 55 on which
the wickets 9 to overcome this magnetic attraction in
there is mounted a pulley 56 over which there is entrained
order to lift the sheet, then undue force would be applied
a drive belt 57 which will be connected to a suitable drive
on the wickets 9. Therefore, in order that the magnetic
mechanism
whereby the shaft 55 will be rotated in timed
attraction of the magnets 3t? on the coated sheet may be
substantially overcome, there is provided a plurality of 70 relation to the operation of the conveyor 8. Mounted
on the shaft 55 and driven by the pulley 55 is an eccen
nozzles 51 which open through the plate 29, the nozzles
tric
53 which has a follower 59. Connected to the fol
31 being carried by the plate 29. The general arrange
lower 59 is an actuating rod 6% which is in turn connected
ment of the nozzles 3-1 is best illustrated in FIGURE 4.
by means of a swivel ?tting ‘61 to the underside of the
The nozzles are connected to a manifold 32, FIGURE 6,
which is in turn connected to a control valve 33 by means 75 sheet support plate 47.
3,067,856
C)
7
a
The timing of the drive for the shaft 55' is such that as
a coated sheet moves into position on the sheet support
plate 47, the eccentric 58 will operate to move the sheet.
feed 6 and the conveyor 8. Also carried by the shaft
87 is a cam 90 which is driven from the pulley 83. The
end of the plate 82 remote from the hinge 31 rests upon
support plate 4-7 upwardly to its dotted line position of
the cam 90 and as the cam rotates, the plate 82 is moved
upwardly so as to move the valves 79 to open position
FIGURE 5 and thus elevate the sheet support plate 47
and the coated sheet overlying it relative to the ?xed mag
nets 52. This will substantially overcome the magnetic
whereby air will pass from the chamber 70 through the
air nozzles 74. The effect of the compressed air on the
underside of a coated sheet overlying the magnets 63
attraction of the magnets 52 on the coated sheet so that
will be to elevate the coated sheet and counteract the
the wicket 9 may lift the coated sheet from the support
plate 47 with a minimum of effort.
10 magnetic attraction of the magnets 68 on the coated sheet.
The brake assemblies 64 being identical, only one of
The brake mechanism 22 has been illustrated as in
cluding the brake assembly 26 and two brake assemblies
44.
Depending upon the particular requirements, the
brake assembly 26 alone may be used or the two brake
assemblies 44- may be used. In other instances, particu
larly where the coated sheet is relatively large and heavy,
all three brake assemblies will be used. It is to be under
stood that the brake assemblies 26 and 44 will be pro
vided with magnets which have the necessary retarding
the brake assemblies will be described in detail. Each
brake assembly 64 includes a frame 91 which is carried by
its respective longitudinal frame member 25 and the
channel frame member 24. It is to be noted that the
frame 91 slopes upwardly and rearwardly so that a sheet
support plate 92 overlying the frame slopes upwardly and
rearwardly, as is best illustrated in FIGURE
The sheet
support plate 92 is provided with a cut-out 93 so as to pro
attraction on a coated sheet so as to stop the coated sheet 20 vide clearance for a side guide, such as a guide 50, the
guide being omitted, but being addable if desired.
in position for engagement with the wicket 9.
A second form of brake mechanism, referred to by the
reference numeral 62, is illustrated in FIGURES 7, 8
and 9. The brake mechanism 62 includes a central for
Secured to the supporting base 53 and extending up
wardly therefrom in underlying relation to the central
part of the sheet support plate 92 is a support 94. The
ward brake assembly 63 and a pair of side rear brake as
semblies 64. The brake assemblies 63 and 64 are sup
tudinal frame members 25 and are arranged so as to be
support 94 carries a horizontal shaft 95 on which there
is mounted a pulley 96. Entrained over the pulley 95
is a drive belt 97 which serves to drive the pulley 96
in timed relation to the operation of the conveyor 8.
closely adjacent, but out of alignment with the wicket 9
Carried by the shaft 95 and driven by the pulley 96 is an
ported from the channel frame member 24 and the longi
as it moves into a coated sheet engaging position.
eccentric 98 which includes a follower 99 having a sup
The brake assembly 63 includes a generally triangular
port rod 100 extending upwardly therefrom. The support
frame 65. Mounted in the upper part of the frame 65
is a plate 67. Carried by the plate 67 is a plurality of
permanent magnets 68 which correspond to the magnets
rod 106 is in turn pivotally connected by means of a
transverse pivot pin 101 to a supporting frame 102. The
30 and may be similarly spaced. ‘Underlying the plate
for vertical movement only. The support frame 102
carries a plurality of permanent magnets 103 which nor
mally underlie the sheet support plate 92 and serve to
67 in spaced relation thereto is a second plate 69 which
is also mounted ‘within the frame 65. The plates 67 and
69 combine with the frame 65 to form an air-tight cham
ber 70.
The frame 65 is provided with an opening 71 there- I
supporting frame 102 is suitably guided by the frame 91
attract coated sheets sliding along the sheet support plate
92.
Once the horizontal movement of the coated sheet
has been stopped by the magnetic attraction of the mag
through which is aligned with a similar opening 7-2 in
the channel frame member 24. Passing through the open
ing 72 and terminating in the opening 71 is a compressed
nets 103 thereon, the action of the eccentric 98 is to lower
the support frame 102 which in turn moves the magnets
air supply line 73 which may be connected to any de
sired compressed air source. Thus compressed air is
maintained within the space between the plates 67 and
69 at all times.
Formed in the upper part of the plate 67 is a plurality
of air nozzles 74 whose positions are best illustrated in
FIGURE 7. The air nozzles 74 open downwardly into
The disposal of the magnets 103 remote from the coated
sheet and the sheet support plate 92 will greatly diminish
the magnetic attraction on the coated sheet and thus per
mit the wicket 9 to freely lift the coated sheet from the
103 downwardly away from the sheet support plate 92.
sheet support plate 92.
In FIGURES 10, 11 and 12 there is illustrated another
‘ form of brake mechanism which is referred to in general
by the reference numeral 3.04.
The brake mechanism
air passages 76 which, in turn, open through the bottom
of the plate 67 into the chamber 70.
Aligned with each of the air nozzles 74 is a ?tting 77
which is thrcadedly seated in the plate 69. The ?tting 77
tral forward part of the brake mechanism 10d.
is in the form of a valve guide for a valve stem 78 of
a valve 79. There is a valve 79 for each of the air
frame 105 serves as a forward sheet support. The frame
105, as illustrated, does not carry a brake assembly. How
nozzles 74 and the valve 79 is normally urged down
wardly by means of a spring 80 carried by the valve stem
ever, while no brake assembly has been illustrated, any
desirable brake assembly may be used or the frame 105
1E4 includes a triangular frame 105 which is secured to
the channel frame member 24 and is disposed in the cen
The
may merely serve as a coated sheet support.
78 so as to prevent the flow of air from the chamber 753
The brake mechanism 104- also includes a pair of side
through the air nozzles 74. It is to be noted that the (it)
brake assemblies 1&6. Inasmuch as the side brake as
valve stems 78 extend down through the plate 69.
semblies Th6 are identical, only one of the brake assem
As is best shown in FIGURE 9, depending from the
blies will be described in detail.
roar part of the frame 65 is a hinge member 81 which in
turn supports a plate 82 for pivotal movement. The plate
82 underlies the plate 69 and engaged the lower ends of
the valve stems 78.
Adjustably supported by the channel frame member
26 are mounted brackets 83. The vertical position of
the mounting brackets is maintained by means of adjust
ing screws 34 carried by a plate 86 underlying the chan
nel frame member 24. Supported by the mounting
The individual brake assembly 106 includes a support
ing frame 107 which is secured to the longitudinal frame
member 25 adjacent it and the channel frame member 24.
Overlying the frame 107 is a sheet support plate 108. The
sheet support plate 108 is provided with a central cut-out
1G9. Mounted within the cut-out 109 is a sheet retarding
mechanism 110.
The sheet retarding mechanism 110 includes a support
111 extending upwardly from the base member 53. Se
brackets 83 is a transverse shaft 87 which carries a pulley
8S. Entrained over the pulley S8 is a drive belt 39 which
will be connected to a suitable drive source to drive the
cured to the upper end of the support 111 is a horizontal
track 112 in which there is mounted a carriage 113. The
shaft 87 in timed relation to the operation of the sheet
carriage 113 is mounted for guided sliding movement
3,067,856
10
9
transversely of the direction of movement of the coated
sheet and is provided with a guide 114. As is best illus
trated in FIGURE 12, the guide 114 includes a spacial
coated sheet engaging insert 115.
142. The air nozzle 145 has a bore 148 therethrough
communicating with the bore 143.
As is best shown in FIGURE 13, the suction units 141
KExtending upwardly from the outer part of the guide
tion units 141 is a manifold 149 which has openings there
way 112 is a bearing member 116 in which there is
rotatably journaled a drive shaft 117. The drive shaft 117
has mounted thereon a pitman wheel 118 to which there
is connected a pitman rod 119. The opposite end of the
ings 150 are in turn aligned with the bores 143. Con
nected to the forward ends of the manifolds 149 are air
pitman 119 is pivotally connected to the carriage 113 by
means of a ?tting 120.
are arranged in two rows.
Underlying each row of suc
in aligned with openings 150‘ in the plate 138, which open
hoses 151 which are, in turn, connected to a control valve
152. As is best shown in FIGURE 14, the control valve
152 is mounted on the channel frame member 24. The
control valve 152 will have connected thereto a vacuum
It is to be understood that the shaft 117 of each of the
brake assemblies 106 is to be driven from a suitable drive
line (not shown).
The valve 152 includes an actuator 153 of the type
mechanism in timed relation to the conveyor 8. As the
coated sheet passes on to the sheet support plates 108 and 15 which is operated by means of a lever 154. The lever 154
moves into engagement with the guides 114, the carriages
is disposed in depending relation and has the lower end
113 will be moved toward each other so that the guides
114 will clampingly engage the side edges of the coated
thereof engaged by a spring assembly 155 which normally v
urges the lever 154 to a valve closing position. The
lever 154 carries a roller-type follower 156 the purpose
of which will be described in more detail hereinafter.
Referring once again to FIGURE 16 in particular, it
will be seen that there are keyed onto the shaft 130 a
sheet so as to retard the movement thereof.
As soon as
the horizontal movement of the coated sheet is discon
tinued, the guides 114 will move apart releasing the coated
sheet so that it may be easily lifted by the wicket 9.
In FIGURES 13, l4, l5 and 16 there is illustrated an
other form of central brake assembly which is referred
to in general by the reference numeral 121. The brake
assembly 121 is secured to the frame of the sheet feeder
6 including the channel frame member 24 and includes a
frame referred to by the reference numeral 122. The
frame 122 includes a pair of longitudinal frame members
pair of disks 157 and 158. Adjustably carried by the disk
157 is a cam 159. A somewhat similar, but differently
formed earn 160 is carried by the disk 158. The cams
1591 and 1613 are adjustably mounted on their respective
disks 157 and 158 by means of bolts 16-1 which pass
through slots 162 in the disks 157 and 158, as is best
shown in FIGURE 14.
The earn 159 is aligned with a roller-type follower 163
123 which are secured by means of spacers 124 to the 30
carried by a transverse pin 164 supported by a pair of
underside of the channel frame member 24. The rear
depending ears 165 on the underside of the plate 138.
ends of the frame member 123 are connected together
The cam 159 is provided with a lobe 166 which, when it
by means of a transverse frame member 125 which in
engages the follower 163 will elevate the plate 138. At
turn has connected thereto a rear vertical frame member
126. A supporting bracket 127 is carried by the upper end 35 this time it is pointed out that the suction units 141 are
aligned with openings 167 in the plate 128. Normally
of the vertical frame member 126. Secured to the chan
the ring 146 is disposed either ?ush with or below the
nel frame member 24 and the supporting bracket 127 is a
surface of the plate 128. As a coated sheet passes on to
sheet support plate 128 which is generally triangular in
the sheet support plate 128 and at such time as the leading
outline and which constitutes a continuation of the plate
edge thereof clears the rearmost one of the suction units
21.
141, the cam lobe 1616 will engage the follower 163 and
Mounted on the frame members 123 is a pair of trans
elevate the suction units 141 so that the rings 146 thereof
versely aligned bearing blocks 129 in which there is
will move into sealed engagement with the underside of
journaled for rotation a shaft 130. Mounted on the shaft
the coated sheet thereby providing the desired suction on
130 is a drive sprocket 131 over which there is entrained
the coated sheet to decelerate the coated sheet.
a drive chain 132. The drive chain 132 will be con
At approximately the same time as the vacuum units
nected to a suitable drive mechanism which is driven in
141 are elevated, a lobe 16,3 of the earn 160 will engage
timed relation to the operation of the sheet feeder 6 and
the follower 156 and serve to open the valve 152. This
the conveyor 3. At this time it is pointed out that any
will apply a suction to the suction units 141 at the desired
suitable type of drive may be used, the drive varying with
50 time. As soon as the coated sheet stops in a position for
the particular conditions and the equipment available.
of guides 133 in the form of bolts having reduced exter
engagement by the wicket E3, the valve 152 will again move
to its closed position and the suction units 141 will be
Generally aligned with the bearing blocks 129 is a pair
nally threaded upper ends 134 which are threadedly en
retracted so as to release the coated sheet. Incidentally,
gaged into internally threaded bores 135 formed in the
by not elevating the suction units 141 until after the
plate 123. The guides 133 depend from the plate 128 and
terminate in heads 136. Slidably mounted on the guides
133 are sleeves 137 carried by a mounting plate 138, the
sleeves 137 being in the form of bushings received in
coated sheet is in overlying relation thereto, damaging
of the sealing rings 146 is prevented.
In FIGURES 17 and 18 there is discloseda side brake
assembly which is referred to in general by the reference
numeral 169. The side brake assembly 169 operates on
the same principle as the brake assembly 121 and in
cludes a suitable supporting frame 171) on which there is
mounted a sheet support plate 171. The sheet support
and extending between the underside of the plate 128 and
plate 171 has associated therewith a plurality of suc
the upper ends of the sleeves 137.
tion units 172 which correspond to the suction units 141.
Secured to the upper surface of the plate 138 is a plu
rality of suction units 141. Each suction unit 141 includes 65 The suction units 172 are supported by means of a
generally triangular support plate 173 which corresponds
a base block 142 which is rigidly secured to the plate 138.
to the support plate 138. The suction units 172 are con
The base block 142 has extending therethrough a bore
nected together by means of a manifold 174 which is,
143 the upper part of which is internally threaded as at
in turn, connected to a control valve 175 by means of a
144. A screw-type air nozzle 145 is threadedly engaged 70 suction line 176. The control valve 175 corresponds to
in the bore 143 and serves to clamp in place a sheet en
the control valve 152. Carried by the frame 170 is an
gaging ring 146 which is preferably formed of rubber or
actuating mechanism 177 which will serve to elevate the
a rubber-like material so that the desired seal between
suction units 172 in the proper timed sequence and at
the ring 146 and a coated sheet may be obtained. The
the same time open the control valve 175. Inasmuch as
the structural details of the operating components of the
ring 146 ?ts in a support member 147 overlying the base
other sleeves 139 rigidly secured to the plate 138 in de
pending relation. The plate 138 is normally urged down
wardly by means of springs 140 carried by the guides 133
acerzaee
l1
brake assembly 169 are identical to those of the brake as
sembly 121, further description is believed to be un
necessary.
1
the coated sheet off of th (D plate 185 with a minimum
of effort.
In FIGURES 24, 25 and 26, there is illustrated an
other form of side brake assembly which is referred to in
general by the reference numeral 216. The brake as
sembly 210 is a companion brake assembly to the brake
assembly 178 and is intended to be used in conjunction
therewith. However, it is to be understood that it may
be used in conjunction with other types of brake as
In FIGURES 19 through 23 there is illustrated an
other form of central brake assembly which is referred
to in general by the reference numeral 173. The brake
assembly 178 is carried by the channel frame member
24 and includes a frame 179. The frame 179 is sub
stantially identical to the frame 122 and includes a pair
of longitudinal frame members 180 which are connected 10 semblies, the side brake assemblies being used inter~
at their forward ends by means of a spacer 181 to the
changeably with others of the central brake assemblies.
underside of the channel frame member 24. The rear
The brake assembly 210 includes a supporting frame
211 which suitably supports a generally rectangular
ends of the frame members 180 are connected together by
a transverse frame member 182 to which there is se
186' are guide members 187 in the form of bolts hav
ing lower heads 188. Mounted on the guide members
138 for vertical movement is a support plate 189. The
plate
URES212.
24 and
The26,
plate
has212,
secured
as is thereto
‘best illustrated
in overlying
in re
lation an elongated inner strip 213, an intermediate strip
214. and an outer strip 215, the outer strip 215 hav
ing connected thereto a vertical guide 216. The guide
216 is intended to engage the side edge of a coated sheet
to align it with the brake assembly 210. The strips 213,
214 and 215 are transversely spaced and have down
wardly and ‘forwardly curved leading ends, as is best
shown in FIGURE 25. The strip 215 and its guide 216
are adjustably secured to the plate 212 by means of brack
ets 217 which are adjustably secured in place by means
of bolts 218.
support plate 189 has secured thereto in depending rela
tion sleeves 194) which carry bushings 191. The bush
The plate 212 and overlying portions of the strip 213
are provided with openings 219 through which magnet
ing 191 of each sleeve 190 are aligned and receives its
assemblies 220 pass. The magnet assemblies 220 are
identical to the magnet assemblies 192 and need not be
described in more detail.
cured a vertical frame member 183. The upper end of
the vertical frame member 133 is provided with a bracket
184 which, in conjunction with the channel frame mem
ber 24 forms a support for a sheet support plate 185.
The sheet support plate 185 is a continuation of the
plate 21.
As is best shown in FIGURE 21, the plate 185 is pro
vided with a pair of transversely aligned internally
threaded inserts 186. Threadedly engaged in the inserts
respective guide 187.
Carried by the plate 189 adjacent opposite side edges
thereof are permanent magnet assemblies 192. Each
The magnet assemblies 220 are mounted on a plate
magnet assembly 192 includes a support 193 which is
221 which corresponds to the plate 189. The plate 221
held in place by means of two diagonally oppositely dis
is supported for guided vertical movements on the plate
posed bolts 194, the bolts 194 passing through the sup 35 212 in the same manner as is the plate 189. This sup
port 193 and being threadedly engaged in internally
port includes a pair of vertical guides 222 which are dis
threaded inserts secured to the plate 189, the inserts be
posed in sleeves 223 secured to the underside of the plate
ing referred to by the reference numeral 195. Passing
221 in depending relation. Also secured to the under
through the opposite corners of the support 193 are posi
side of the plate 221 in depending relation is a bracket
tioning studs 1%. The studs 196 bear against the up 40 224 which carries a roller-type follower 225.
per surface of the plate 189 and are threadedly engaged
Mounted on the frame 211 are bearing ‘blocks 226
in the support 193. Each of the studs 196 is provided
carrying a shaft 227 which, in turn, has secured thereto a
with a lock-nut 197. Seated in each of the supports 193
drive sprocket 228 over which there is entrained a drive
is a permanent magnet 198.
chain 229. The drive chain 229 will be driven in timed
As is best shown in FIGURES 22 and 23, the plate 185
relation to the operation of the sheet feeder 6' and the
is provided with an opening 199 for each of the magnet
conveyor 3.
i
assemblies 192. Normally the magnets 198 are disposed
Keyed on the shaft 227 is a cam 230 which underlies
?ush with the upper surface of the plate 185. The mag
the follower 225 and which, together with the follower
nets 198 are held in this position by a support assembly
225, serves to support the plate 221.
which is best illustrated in FIGURE 21 and is referred
it is to be understood that the magnet assemblies 220
to in general by the reference numeral 2%.
will normally project up into the strip 213 and be sub
The support assembly 290, as shown in FIGURE 21,
stantially flush with the upper surface of the strip 213.
includes a pair of bearing blocks 291 which are trans
versely aligned and which have extending therethrough a
shaft 292. The shaft 202 has mounted at one end
thereof a drive sprocket 263 over which there is en
trained a suitable drive chain 204 (FIGURE 20) which
will be connected to a suitable drive unit so as to drive
The magnet assemblies 220 will then serve to decelerate
a coated sheet passing on to the brake assembly 210.
After the coated sheet has been stopped, the magnet as
semblies 220 are lowered so as to reduce the magnetic
attraction on the coated sheet in order that one of the
wickets 9 may readily remove the coated sheet from the
the shaft 292 in timed relation to the operation of the
brake assemblies 220.
sheet feeder 6 and the conveyor 8.
60
As Was previously stated, any desired combination of
Keyed on the shaft 202 intermediate the bearing blocks
the various brake assemblies may be utilized. However,
201 is a disk 265 which had adjustably mounted thereon
generally the side brake assemblies will be identical with
a cam 206. The cam 206 engages a roller-type follower
each
other although they may be of entirely different con
267 which is carried by a suitable support bracket 268
struction from the central brake assembly. Also, as
depending from the plate 189. Springs 299 mounted
pointed out above, either the side brake assembly or the
around guides 187 urge the follower 207 into engagement
central brake assembly may be eliminated although for
with the cam 206, thus the plate 189 is supported at
practical purposes each brake mechanism will include a
all times by the cam 296.
central brake assembly and two side brake assemblies.
In the operation of the brake assembly 178, as the
While numerous examples of construction and arrange
coated sheet passes on to the plate 185, it is attracted by 70
the magnets 198 and decelerated. After the coated sheet
ment of the novel features of the invention are disclosed
has stopped, and is about to be engaged by one of the
herein, it is to be understood that these features can be
wickets 9, the plate 189 will be lowered so as to retract
further variously modi?ed without departing from the
the magnets 198. This will diminish the magnetic attrac
spirit and scope of the invention as de?ned in the ap
tion on the coated sheet andipermit the wicket 9'to lift
pended claims.
‘3,067,856
14
13
from said ?rst conveyor, stopping the horizontal move~
ment of the sheets and then releasing the sheets for move
I 1. In a mechanism for coating metal sheets of the type
ment by said second conveyor, said brake mechanism in
including a coating machine and an oven, a sheet feeding
cluding a generally horizontal sheet support, a support
mechanism for feeding sheets between said coating ima
unit underlying said sheet support, a plurality of indi
vchine and said oven, said sheet feeding mechanism com
vidual brake elements of the sheet attractive type carried
prising a ?rst conveyor for feeding sheets from said coat
by said support unit, openings in said sheet support re
ing machine in a horizontal path, a second conveyor for
ceiving said brake elements, control ‘means connected to
receiving sheets from said ?rst conveyor and feeding the
said brake elements for ?rst rendering said brake ele
sheets through the oven in generally upstanding positions,
and a brake mechanism disposed intermediate said ?rst 10 ments operative in timed relation to the feeding of sheets
onto said sheet support and then rendering said brake ele
conveyor and said second conveyor for receiving sheets
ments ineffective in timed relation to the ‘operation of said
from said ?rst conveyor, stopping the horizontal move
second conveyor.
ment of the sheets and then releasing the sheets for move
5. ‘In a mechanism for coating metal sheets of the type
ment by said second conveyor, said brake mechanism in
I claim:
-
cluding a generally horizontal sheet support, individual 15 including a coating machine and an oven, a sheet feeding
mechanism for feeding sheets between said coating ma
brake elements of the sheet attractive type carried by said
chine and said oven, said sheet feeding mechanism com
prising a ?rst conveyor for feeding sheets from said c0at~
ing machine in a horizontal path, a second conveyor for
sheet support in a sheet attracting position, and means for
increasing the spacing between said brake elements and
an overlying sheet to render said brake elements ineffective
in timed relation to the operation of said second conveyor.
2. In a mechanism for coating metal sheets of the type
receiving sheets from said ?rst conveyor and feeding the
sheets through the oven in generally upstanding positions,
including a coating machine and an oven, a sheet feeding
and a brake mechanism disposed intermediate said ?rst
mechanism for feeding sheets between said coating ma
conveyor and said second conveyor for receiving sheets
from said ?rst conveyor, stopping the horizontal move
chine and said oven, said sheet feeding mechanism com
prising a ?rst conveyor for feeding sheets from said coat 25 ment of the sheets and then releasing the sheets for move—
ment by said second conveyor, said brake mechanism in
ing machine in a horizontal path, a second conveyor for
cluding a generally horizontal sheet support, a support
receiving sheets from said ?rst conveyor and feeding the
unit underlying said sheet support, a plurality of indi
sheets through the oven in generally upstanding positions,
vidual brake elements of the sheet attractive type carried
and a brake mechanism disposed intermediate said ?rst
conveyor and said second conveyor for receiving sheets 30 by said support unit, openings in said sheet support re
ceiving said brake elements, control means connected to
from said ?rst conveyor, stopping the horizontal move
said brake elements for ?rst rendering said brake ele
ment of the sheets and then releasing the sheets for move
ments operative in timed relation to the feeding of sheets
ment by said conveyor, said brake mechanism including
onto said sheet support and then rendering said brake
a generally horizontal sheet support, individual brake
elements of the sheet attractive type carried by said sheet 35 elements ineffective in timed relation to the operation of
said second conveyor, and other control means connected
support in a sheet attracting position, said sheet support
to said support unit for lowering said support unit and
including at least one sheet supporting plate, guide means
said brake elements in timed relation to the operation of
mounting said supporting plate for upward movement
said second conveyor.
away from associated ones of said brake elements, and
6. In a mechanism for coating metal sheets of the type
means connected to said supporting plate for elevating 40
said supporting plate in timed relation to the'operation of
including a coating machine and an oven, a sheet feeding
said second conveyor whereby a sheet is released from
said brake elements at the time of engagement by said
second conveyor.
3. In a mechanism for coating metal sheets of the type
including a coating machine and an oven, a sheet feeding
mechanism for feeding sheets between said coating ma
chine and said oven, said sheet feeding mechanism com
prising a ?rst conveyor for feeding sheets from said coat~
ing machine in a horizontal path, a second conveyor for 50
mechanism for feeding sheets between said coating ma
receiving sheets from said ?rst conveyor and feeding the
sheets through the oven in generally upstanding positions,
and a brake mechanism disposed intermediate said ?rst
conveyor and said second conveyor for receiving sheets
from said ?rst conveyor, stopping the horizontal move
ment of the sheets and then releasing the sheets for move
ment by said conveyor, said brake mechanism including
a generally horizontal sheet support, individual brake ele
ments ‘of the sheet attractive type carried by said sheet
chine and said oven, said sheet feeding mechanism com
prising a ?rst conveyor for feeding sheets from said coat
ing machine in a horizontal path, a second conveyor for
receiving sheets from said ?rst conveyor and feeding the
sheets through the oven in generally upstanding positions,
and a brake mechanism disposed intermediate said ?rst
conveyor and said second conveyor for receiving sheets
from said first conveyor, stopping the horizontal move
ment of the sheets and then releasing the sheets for move
ment by said second conveyor, said brake mechanism in
cluding a generally horizontal sheet support, a support
unit underlying said sheet support, a plurality of indi
55 vidual brake elements of the sheet attractive type carried
by said support unit, openings in said sheet support re
ceiving said brake elements, said brake elements being
in the form of vacuum cups, a vacuum line connected to
said vacuum cups, a valve mounted in said vacuum line,
support in a sheet attracting position, a plurality of up 60 control means connected to said valve for operating said
valve to apply a vacuum to said vacuum cups in timed
wardly directed nozzles opening through said sheet sup
relation to the feeding of sheets onto said sheet support
and then venting said vacuum cups to release the sheet in
timed relation to the operation of said second conveyor.
operation of said second conveyor for overcoming the
7. In a mechanism for coating metal sheets of the type
65
force of said brake elements on a sheet.
including a coating machine and an oven, a sheet feeding
4. in a mechanism for coating metal sheets of the type
mechanism for feeding sheets between said coating ma~
including a coating machine and an oven, a sheet feeding
chine and said oven, said sheet feeding mechanism com
mechanism for feeding sheets between said coating ma
prising a ?rst conveyor for feeding sheets from said coat
chine and said oven, said sheet feeding mechanism com
prising a'?rst conveyor for feeding sheets from said coat 70 ing machine in a horizontal path, a second conveyor for
receiving sheets from said ?rst conveyor and feeding the
ing machine in a horizontal path, a second conveyor for
sheets through the oven in generally upstanding positions,
receiving sheets from said ?rst conveyor and feeding the
and a brake mechanism disposed intermediate said ?rst
sheets through the oven in generally upstanding positions,
conveyor and said second conveyor for receiving sheets
and a brake mechanism disposed intermediate said ?rst
from said ?rst conveyor, stopping the horizontal move-,
conveyor and said second conveyor for receiving sheets
port adjacent said brake elements, and means for supply
ing compressed air to said nozzles in timed relation to the
73,067,856
15
.155
.
ment of the shee and then releasing the sheets for move
ment by said second conveyor, said brake mechanism in
cluding a generally horizontal sheet support, a support
unit underlying said sheet support, a plurality of indi
vidual brake elements of the sheet attractive type carried
by said support unit, openings in said sheet support re
ceiving said brake elements, said brake elements being in
10. in a mechanism for coating metals sheets of the
type including a coating machine and an oven, a sheet
feeding mechanism for feeding sheets between said coating
machine and said oven, said sheet feeding mechanism
comprising a ?rst conveyor for feeding sheets from said
coating machine in a horizontal path, a second conveyor
for receiving sheets from said ?rst conveyor and feeding
the sheets through the oven in generally upstanding posi
tions, and a brake mechanism disposed intermediate said
control means connected to said valve for operating said 10 ?rst conveyor and said second conveyor for receiving
sheets from said ?rst conveyor, stopping the horizontal
valve to apply a vacuum to said vacuum cups in timed
movement of the sheets and then releasing the sheets for
relation to the feeding of sheets onto said sheet support
movement by said second conveyor, said brake mech
and then venting said vacuum cups to release the sheet in
anism including a generally horizontal sheet support,
timed relation to the operation of said second conveyor,
individual brake elements in the form of magnets seated
and other control means connected to said support unit
in said sheet support in sheet attracting positions, a plu
for lowering said support unit and said brake e‘iements in
rality of upwardly directed nozzles opening through said
timed relation to the operation of said second conveyor.
sheet support adjacent said brake elements, and means
8. In a mechanism for coating metal sheets of the type
for supplying compressed air to said nozzles in timed re
including a coating machine and an even, a sheet feeding
echanism for feeding sheets between said coating ma- -'. lation to the operation of said second conveyor for over
coming the force of said brake elements on a sheet.
chine and said oven, said sheet feeding mechanism com
11. In a mechanism for coating metal sheets of the
prising a ?rst conveyor for feeding sheets from said coat
type including a coating machine and an oven, a sheet
ing machine in a horizontal path, a second conveyor for
feeding mechanism for feeding sheets between said coat
receiving sheets from said ?rst conveyor and feeding the
ing machine and said oven, said sheet feeding mech
sheets through the oven in generally upstanding positions,
anism comprising a ?rst conveyor for feeding sheets from
and a brake mechanism disposed intermediate said ?rst
said coating machine in a horizontal path, a second con
conveyor and said second conveyor for receiving sheets
veyor for receiving sheets from said ?rst conveyor and
from said ?rst conveyor, stopping the horizontal move
feeding the sheets through the oven in generally upstand~
ment of the sheets and then releasing the sheets for move
ment by said second conveyor, said brake mechanism in SD ing positions, and a brake mechanism disposed intermedi
ate said ?rst conveyor and said second conveyor for
cluding a generally horizontal sheet support, individual
receiving sheets from said ?rst conveyor, stopping the
brake elements in the form of magnets seated in said sheet
horizontal movement of the sheets and then releasing the
support in sheet attracting positions, and means for in
sheets for movement by said second conveyor, said brake
creasing the spacing between said brake elements and an
mechanism including a generally horizontal sheet sup
overlying sheet to render said brake elements ineffective
port, a support unit underlying said sheet support, a plu
in timed relation to the operation of said second conveyor.
rality of individual brake elements in the form of magnets
9. In a mechanism for coating metal sheets of the type
carried by said support unit, means connected to said
including a coating machine and an oven, a sheet feeding
support unit for supporting and lowering said support unit
mechanism for feeding sheets between said coating‘ ma
chine and said oven, said sheet feeding mechanism com 40 and said brake elements in timed relation to the operation
of said second conveyor.
prising a ?rst conveyor for feeding sheets from said coat
the form of vacuum cups, a vacuum line connected to
said vacuum cups, a valve mounted in said vacuum line,
ing machine in a horizontal path, a second conveyor for
receiving sheets from said ?rst conveyor and feeding the
sheets through the oven in generally upstanding positions,
and a brake mechanism disposed intermediate said first 45
conveyor and said second conveyor for receiving sheets
from said ?rst conveyor, stopping the horizontal move
ment of the sheets and then releasing the sheets for move
ment by said second conveyor, said brake mechanism in
cluding a generally horizontal sheet support, individual
brake elements in the form of magnets seated in said sheet
support in sheet attracting positions, said sheet support in
cluding at least one sheet supporting plate, guide means
mounting said supporting plate for upward movement
away from associated ones of said brake elements, and
means connected to said supporting plate for elevating
said supporting plate in timed relation to the operation
of said second conveyor whereby a sheet is released from
said brake elements at the time of engagement by said
second conveyor,
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,150,302
Perkins et al ___________ __ Aug. 17, 1915
1,448,065
1,810,859
1,853,478
2,186,566
Harrich ______________ __ Mar. 13,
Thurmer _____________ __ June 16,
Vincent ______________ __ Apr. 12,
Albright ______________ __ Jan. 9,
1923
1931
1932
1940
2,568,073
Koppel ______________ __ Sept. 18, 1951
2,576,218
2,767,823
2,821,286
Fox _________________ __ Nov. 27, 1951
Beamish ______________ __ Oct. 23, 1956
Russell _______________ __ Jan. 28, 1958
2,880,846
Schone ________________ __ Apr. 7, 1959
FOREIGN PATENTS
122,142
Australia _____________ __ Sept. 12, 1946
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