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Патент USA US3056519

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Oct. 2, 1962
Filed Jan. 21, 1959
Oct. 2, 1962
Filed Jan. 21. 1959
3 Sheets-Sheet 2
United States Patent O?tice
George H. Williamson, Somerville, N.J., assignor to
Johns-Manville Corporation, New York, N.Y., a cor
poration of New York
Filed Jan. 21, 1959, Ser. No. 788,151
3 Claims. (Cl. 214-6)
This invention relates to an apparatus for stacking
bundles of sheet-like articles of manufacture, as for ex
ample, roo?ng shingles or the like, received from a mass
production fabrication line.
In mass producing ?at, sheet-like or planar type articles
of manufacture, as, for example, roo?ng shingles, siding
shingles and the like, such articles are commonly bundled
Patented Oct. 2, 1962
FIG. 3 is a cross-sectional View of a detail along lines
3-3 of FIG. 2;
FIG. 4 is a cross-sectional View of a portion of the
loading platform and taken along lines 4——4 of FIG.
2; and
FIG. 5 is a partial plan view of the connecting mecha
nism between the platform cars.
Referring to FIGS. 1 and 2, a frame 1 comprises a
plurality of vertical supports 2 standing on a base support
3, which may be the ?oor of the manufacturing plant.
Within the area partially enclosed by the supports 2 is
located a hydraulic lift 4 comprising a non-rotable table
5 secured to a hydraulic cylinder 7. The hydraulic cylin
der 7 extends into the base support 3 and is movable in
a vertical direction to lift the non~rotating table to a pre
into a package convenient for shipping. As such bundles 15 determined height. Such hydraulic elevator systems,
are emitted from the fabrication line, they are stacked in
tiers in a predetermined manner for carting away of such
per se, are well known in the art and the speci?c details
thereof have not been illustrated; however. su?ice it to
piled stacks of bundles by mechanized apparatus, as, for
say, the instant system is of the type which elevates the
example, a fork lift truck. Heretofore, shingle bundles, 20 tables 5 and 8 (referred to further, below) to their initial
and the like, have been stacked on loading trays manually.
loading position in one stroke and lowers the tables 5 and
The stacking arrangement is usually a staggered one, i.e.,
8 in increments, with each increment being approximately
a tier of bundles is placed on a platform with the follow
equal to the height or thickness of a bundle 25.
ing tier placed at right angles to the tier below and the
Mounted on the non-rotating table 5 is the rotatable
subsequent tier placed at right angles to the preceding tier
table 8 referred to above, comprising a platform 9, rein
or in the same direction as the ?rst tier. This stacking
forced by ribs 9a, on a sleeve 10 (FIG. 3); the tables 5
arrangement, or any other similar form of staggered stack
and 8 together with the lift mechanism, may be considered
ing arrangement, is usually required to prevent toppling
to be a loading station. A bushing 11 is secured to table
of the upper bundles in the stack during transfer of the
5 and extends within the sleeve 10; the sleeve is mounted
stack from one portion of the plant to another or during
on the bushing by roller bearings 12 in bearing sleeves 87,
88 so that the platform 9 and the sleeve 10 may be rotated
An object of this invention is to provide a mechanical
about the bushing and about the ?xed table 5. The hear
apparatus for stacking bundles of siding shingles, and the
ing structure is retained to the bushing lit by washer 89
like, in a predetermined manner, i.e., in a staggered form
secured to the bushing by bolt 94}. Between the platform
of arrangement.
9 and table 5 is mounted a hydraulic cylinder or servo
Another object of this invention is to provide a mech
motor 13 having at one end an annular extension 15
anized system of stacking shingle bundles, and the like,
pivoted about a pivot support 16 secured to the non
whereby the mass production by automatic mechanisms
rotating table 5. The operating plunger 14 of the servo
of such shingles is further increased.
motor 13 has its free yoked end 17 attached to a bushing
Still another object of this invention is to provide a 40 extension 18; the yoke 17 and the extension 18 are se
novel apparatus for stacking bundles of roo?ng or siding
cured together by a conventional retainer pin 19. To
shingles and the like in a mass production system.
facilitate rotation of rotatable table 8 after the super
In brief, the invention comprises a plurality of plat
position of a load of bundles, platform 2 has secured on
form cars, which cars can be placed alternately on a load
its underside a plurality of brackets 85' for mounting
ing station. The latter station has hydraulic lift mecha
wheels 36 therein. The planes of the wheels 86 are ap
nism therein, which automatically elevates the superim
proximately at right angles to radius lines emanating from
posed platform car to a bundle receiving position. Trans
fer mechanism associated with the station transfers the
bundles, conveyed by a mass production line, from the
line to the elevated platform car. At periodic intervals,
automatic mechanisms lower and rotate the platform car
90° so that the following tiers or tier of bundles stacked
the ‘outer periphery of the table. Thus, complete sup~
port is provided for the table 8, even when fully loaded,
by the central sleeve 10 on its bearings and by the plu
on the platform car are amassed in a staggered arrange
the center of circular table '9 and are mounted adjacent
rality of wheels 86 adjacent the periphery of the plat
form 9.
In the position shown in FIG. 1, a platform car 20
rests upon the rotatable table 8 and has its wheels 21,
which are supported by channel bars 22, situated within
guides 23 secured to the rotatable table 8. The members
23 are guide rails for initially directing the platform car
20 on the rotatable table 8. Superimposed on the plat
form car 20 is a ?anged U-shaped loading tray 24, prop
ment relative to the bundles previously stacked. Upon
the stacks reaching a proper height, automatic mecha
nism removes the loaded platform car from the station
and substitutes in its place an empty platform car to be
subsequently loaded with bundles as previously described.
The foregoing and other objects will be readily appar
ent from the preceding description and from the follow 60 erly positioned and held in place by brackets 24a; the
ing more detailed description and the accompanying draw
tray is used to facilitate removal of a stack of bundles
ings wherein:
from the platform car 20‘ by a fork lift truck by insertion
of the forks of the truck underneath the ?anged members
FIG. 1 is a view in elevation, with certain parts deleted
of the loading tray 24.
and others broken away, showing a relatively fully loaded
L-shaped supports 26, mounted on the upper portions
platform car on a station and showing the station relative
of legs 2, support a pair of spindles 27 at the ends there
to the remaining platform cars;
of; nuts 28 at the ends of the spindles prevent release
FIG. 2 is another view in elevation of the stacking sta
or detachment of such spindles from their supporting
tion in relation to the bundle transfer apparatus used for
structure. A pair of arms 29, capable of oscillation, are
transferring the bundles of shingles, and the like, from
70 centrally mounted at the ends of each spindle 27; each
the mass production line to the mechanized stacking sys
arm has at one end thereof an opening 30 having passed
therethrough a second spindle 31, and a U groove 32 at
the opposite extremity for straddling a stub spindle 33
therein. Each upper spindle 31 has joined thereto, at its
approximate midpoint, an actuating ‘rod 34 of a double
end, double acting ?uid cylinder or ?uid motor 35. The
action of motor 35 is such that, upon actuation, the upper
portion of each oscillating arm 29 is pulled inwardly to
ward the motor and the lower portion of arm 29 is rocked
outwardly away from the motor as the arm pivots about
spindle 27. The motor 35 is supported by conventional
support means 36 secured in any conventional manner,
as, for example, by a crossbar to the vertical legs 2.
An L-shaped platform 37 (FIGS. 1, 2 and 4) is se—
cured to stub spindles 33 engaged by the lower portions
of rods Y29 and has secured thereto a guide rod 38 sliding
in a guide support 39; roller balls 49 are mounted in a
manner to produce a ball bearing effect in the upper sur
face of each platform to facilitate the movement of the
bundles from one end of each platform to the opposite
end. Thus, in the deactivated or “at rest” position of
Mounted on a shaft 62 (FIGS. 1 and 2) in bearings 64,
which are attached to frame l, are a pair of rubber rollers
63 which are engaged by the bundles on the platforms 37
and which give added translational impetus to the bundles
for further movement of the bundles on the balls 4-0 of
the platforms 37. The shaft 62 has a sprocket ‘62a at one
end thereof, which sprocket is connected to the drive
motor 61 by conventional drive linkage.
The assembly line main conveyor 65 (FIG. 2) has its
extremity positioned adjacent transfer conveyor belt 59.
Mounted adjacent the end of the conveyor 65' is an oscil~
lator type actuating rod 67 supported at its approximate
midpoint by a pin 63 in a yoke type support 63a mounted
to the conveyor frame. A pusher bar 69 is secured to the
upper extremity of the rod 67, and the opposite end 7th is
yoked to recieve a pin 71; the pin is secured to an actu
ator rod 72 of servomotor 73 mounted on frame 74.
Switch 73a, mounted at the extremity of the conveyor 65,
is actuated by the bundles conveyed on the conveyor and
places servomotor 73 into operation thereby oscillating
rod 67 about its central pivot and causing pusher bar to
?uid motor 35, platform 37 is in a bundle loading posi
tion and the ends of the bundles are supported by roller
balls 40. -At a predetermined time in the loading cycle,
kick the bundles on the main conveyor belt 65 sideways
motor 35 is actuated to pivot arms 29 about their central
to the transfer conveyor belt 59 from whence they are
support. Stub shafts 33 are moved outwardly away from
the bundles causing rods 38 to slide within guides 39; the
conveyed to the platforms 37.
bundle supporting portions of platforms 37 are thus
moved and guided away from the bundles until each plat
form 37 is completely free of the previously superposed
bundles, thus allowing the bundles to drop by gravity to
The cars 2131, 260:, 2%, referring now to FIGS. 1 and 5,
have a means of attachment which permits joint hori
zontal movement of the cars, i.e., coupling of the cars,
and, at the same time, allows for vertical movement of
any one of the cars relative to the other cars, when such
30 car is at the loading station. The car coupling com
prises a yoke '74 attached to one end of a car and a ball
A limiting plate 41 is mounted adjacent the platforms
the stack of bundles or to the loading tray below.
37 by a guide rod 42 riding in a housing 42a (FIG. 2);
also secured thereto is a link 43 having its opposite end
secured, as by pin 45, to one leg of a bell crank lever 46.
75 attached to the adjacent end of an adjacent car. The
yoke 74 is recessed at 75a to receive the ball 75 only in
a vertical direction; thus, during horizontal movement of
The lever has its central portion secured by pin 47 to a 35 the cars, ball 75 is located within recess 75a to provide
for proper engagement of the cars and cannot be dis
pair of journals 48 attached to the frame ‘1; the free end
engaged from the recess provided only horizontal move
of the outer leg of the bell crank has secured thereto by
ment exists. During elevation of a platform car 20 by
pin 49 a guide rod 50 connected to an air cylinder 52. The
hydraulic lift '4, ball '75 frees itself from recess 75a in
latter cylinder is pivotally mounted to a support 52a and
an adjacent car yoke 71% permitting the associated plat
secured by a connecting plate 51 to a crossbar of the
form car to be elevated to the proper position.
frame 1. The purpose of the limiter 41 is to stop the ?rst
Cables 77 are attached to eye brackets 76 secured to
tier of bundles on the platforms 37 at a ?xed point within
the end cars and are secured to winches 79 (only one of
frame 1; in the position shown in FIG. 2, the limiter al
which is shown) attached to drive motors 78. The
lows two bundles to be recieved on the platforms 37.
motors 78 are automatically actuated to place the asso
This is necessary in view of the type of loading tray used
cated cable 77 in tension in moving a loaded platform
which requires that the ?rst tier of bundles be comprised
car from the loading station and replacing it with an
of only two bundles. After receipt of the ?rst tier, or
empty platform car, as by the actuation of switch 81,
two bundles only, a limiter 41 is moved backwards by air
cylinder 52 to a position wherein an additional bundle
hereinafter described. In the system illustrated, three
may be received on the platforms; this new position of the
limiter is taken by the translation of rod 50 by motor 52,
which rod rotates bellcrank 46 about its pivot 47, thereby
thrusting link 43 toward the adjacent frame legs 2..
Secured on a ‘support 54 (FIG. 1) attached to frame
sections 26 is a switch 55 having its actuating arm 56 and
roller 57 in the line of travel of oscillating arm 29; the
purpose of the switch 55 will be hereinafter described in
greater detail. Also mounted on one of the upright legs
cars are illustrated. Ordinarily however, ?ve to seven
cars are used with the end cars being attached to cables
77 wrapped around winches 79 on either side of the load
ing platform. The motors are operated in sequence so
that the platform cars are pulled towards one motor and
alternately towards the other motor on the opposite side
of the loading station.
A switch 81 mounted adjacent the ?oor or base struc
ture 3, has an extended actuating arm 86' engaged by
the platform 5; the switch controls a hydraulic motor
2 are a plurality of switches 58, 53a, 58b, 58c, 58d, 58a,
58]‘; these latter switches control the downward increment 60 83, which operates an actuating rod 84 secured to \/ type
locks or brakes 82. The locks are positioned in such
ing of the platforms 5, 8 and superimposed car 20, also,
a manner that when one of the motors 83 is actuated,
hereinafter described in greater detail. In addition to its
a wheel of an adjacent platform car 26a is received within
incrementing function, switch 58 also controls ?uid to
the bight of the V lock thereby locking the whole train
motor 52 so that it places limiter 41, during the initial
portions of the stacking cycle in a two bundle receiving
of cars on one side of the frame it. A similar locking
arrangement is provided for the cars on the opposite side
position and, for the major portion of the cycle, in a
three bundle receiving position.
of the frame. The locking arrangement is necessary so
A conveyor belt 59, referring now to FIG. 2, has its
that the balls 75 properly engage with the recesses 75a
upon lowering of the platform car on the loading station.
upper reach approximately in line with the balls 49 on
platforms 37 so that the bundles conveyed thereon are
To guarantee proper movement of the platform cars and
smoothly transferred from the conveyor to the pair of
also proper location of the cars when the cars are halted,
platforms 37 within the frame 1; the conveyor 59 is
the wheels of each of the platform cars, when outside the
mounted for rotation on drums 66 in a conventional man
ner. The drums are powered by a drive motor 61 by con
ventional connecting drive linkage.
loading platform, ride in guide rails 23a, 23b secured to
the floor 3. The latter rails are in line with guide rails
75 23 when the rotating table 55 is in its initial position.
The operation of the system is as follows. Hydraulic
lift 4, initially, is in its fully recessed or its downward
position; the appropriate motor 78 is operated thereby
pulling the train of platform cars 20, 2%, etc., so that
a platform car 2b is positioned on the rotating platform
8. The train of cars is at all times guided by guide
rails 23 on the rotatable table 8 and guide rails 23a and
2332 on the floor 3 of the plant. A control (not shown)
on the lift 4 is operated thereby elevating platforms 5
Switch 58, when engaged, likewise actuates motor 13,
which forces its plunger 14 inwardly thereby rotating pl at
form 8 about bushing 11 on hearing 12. The degree of
inward movement of plunger 14‘ is such that approxi
mately 90° of rotation of the platform 8 is produced.
A second tier of bundles is similarly loaded on the ?rst
tier and on the loading tray, except, this time, three
bundles are stacked thereon. Also, since the rotatable
platform has been rotated through 90°, the bundles of
and 8 and car 21} to the proper height, i.e., to an initial 10 the second tier are superimposed 90° relative to the
bundle receiving position. Ball 75, on one side of car
bundles of the ?rst tier. The particular staggering ar
2G‘, disengages itself from socket '74 attached to an adja
rangement may be altered to fit particular requirements
cent car 24M on one side of the loading platform, and
socket 75a on the opposite side of the platform car 20
disengages itself from ball 75 attached to an adjacent car
2% on the opposite side of the loading platform. As
the hydraulic plunger '7 elevates the rotatable table 8,
non-rotatable table 5 and car 2%), levers 80 are tripped
by platform 5; these levers are thereafter maintained
in position by a spring (not shown) and actuate switches
81 during the tripping movement. The latter, in turn,
activate ?uid motors 83 to position V locks 82 adjacent
the wheels of the superposed cars thereby locking the cars
in place. As the platforms are elevated, switch 58 is
tripped, which switch controls, inter alia, the operation
of fluid motor 52.
The motor is operated in a manner
merely by changing the connections of switches 58, 58a,
58b, etc., with relation to operating motor 13. In the
arrangement illustrated, tiers B and C have their bundles
parallel to each other While tiers A and D have their
bundles parallel to each other. Thus, in the instant con
trol system, switches 58 and 58b operate control motor
13. The latter switch, upon actuation, returns plunger
14 to its original position so that rotatable table 8 is
rotated 90° to its original position.
This stacking arrangement is continued until the
bundles have reached the proper height; at this time, lift
4 is in its lower-most position and arms 80, forced down
wardly by table 5, have actuated switches 81. Likewise,
all the cars are now fully interlocked for movement as
to place limit plate 41 in its extended position so that only
balls 75 and recesses 75a of the cars adjacent car 20 have
two bundles can be initially loaded on the loading tray
intermeshed. Plungers 84 have been operated by motors
on the platform car
The bundles 25, conveyed
83, the latter being controlled by switches 81, to return
by the conveyor system 65, are conveyed to a point where 30 V locks 82 to their original positions; the train of cars is
one of the bundles is adjacent switch ‘73a; the switch
now in position for horizontal movement when pulled by
is tripped thereby actuating fluid motor 73. Rod 67
one of the motors 78. One of the switches 81 operates
is oscillated about its pivot 58 and pusher bar 59 pushes
the appropriate motor 78 through a time delay and the
the tripping bundle 25 to conveyor belt 5?. Upon receipt
train of cars is pulled, either to the right or to the left,
of the bundle by conveyor 59, switch 73a. returns to its
so that the loaded platform car 2t) is removed from plat
normal position thereby returning motor 73 and pusher
forms 5, ti and is replaced by the adjacent empty plat
bar '69 also to their normal positions, in readiness for
form car, either 29a or 26b; upon proper positioning of
the next oncoming bundle. The bundle 25 is conveyed
either, car Zita or Zllb, motor 78 is automatically braked
on the transfer belt until the ends of the bundle slide
and the car, Ztla or 2012, is ready to receive bundles there
along the rotatable balls 4.19 on the platforms 37. The 40 on. Loaded platform car 20 is now in position to have
upper surface of the bundle is engaged by positively driven
its bundles and loading tray removed by fork lift truck.
roller es, and the roller gives an additional impetus to
Having thus described my invention in rather full detail,
the moving bundle. The forward progress of the bundle
it will be understood that the details given are for the
is such that it halts just short of the limiting stop 41. A
purpose of illustration, not restriction, and that variations
second bundle is similarly conveyed; however, the added
within the spirit of the invention are intended to be in
impetus given to the second bundle by roller 63 also 45 cluded in the scope of the appended claims.
moves the ?rst bundle so that it engages limit stop 41.
switch 41:: on the limit stop is tripped thereby actuating
the double end, double actiru7 motor 35. The motor
forces rods 34, on each side of the motor, inwardly and
also rotates rocking arm 29 about its central pivot.
Platforms 37, operatively connected to the lower end of
arm 29, are moved outwardly away from motor 35 and
What I claim is:
1. A bundle stacking system comprising a plurality of
juxtapositioned platform cars, means to interconnect the
cars for joint horizontal, reciprocating movement of the
cars but for individual movement of the cars in a vertical
direction, a bundle loading station, means to move
the cars to place one of the cars on said one sta
also out of supporting engagement with the bundles super
tion, means to elevate the platform car on the station out
imposed thereon, so that the bundles, now unsuspended,
of the line of cars, means actuated by upward movement
drop into the recess of the loading tray 24. During oscil
of said platform car elevating means to positively lock
lation of arm 29, roller 57 is engaged and switch 55' is
the cars adjacent said one platform car to ?x their posi
operated. This operates the hydraulic controls on lift 4,
tions relative to the station, means to load tiers of bundles
and the tables 5, 8 are lowered; this action continues
on the elevated platform car, means to successively lower
until switch 58 is tripped which stops the ?ow of the ?uid
of lift 4, and the tables 5, 3 are stopped at this position. 60 the elevated platform car upon successive loading of tiers
of bundles on the elevated platform car until such car is
The action of motor 35 is almost instantaneous, and the
returned to its original place in the line of cars and is
motor is of such a type that it returns arms 29 to their
again interlocked therewith, and means to rotate the
original positions, or retracts its plungers 34, automat
platform car at preselected intervals during stack
ically. Return movement of arm 29 also allows arm 56
to stagger the subsequent stacking arrange
of switch 55 to return to its original position.
ment of the bundles, said locking means being deactuated
Switch 58 is operatively connected to motor 52 so that
upon return of said platform car elevating means to its
upon engagement of this switch, the motor rotates bell
lower position.
crank 46 and retracts plate 41 to its other extreme posi
2. A bundle stacking system comprising a plurality of
tion, whereby a third bundle may also be received on
juxtapositioned platform cars, means to interconnect the
the loading platforms. The limit stop 41 maintains this
position until a complete pile of bundles has been stacked
on the platform car 2t} and is returned to its previous posi
tion by actuation of switch 58 on return movement of
the platforms 5 and 8.
cars for joint horizontal movement of the cars but for in
dividual movement of the cars in a vertical direction, a
bundle loading station, means to move the cars in either
horizontal direction along an axial line to place one of
75 the cars on the station, linear track means passing through
the loading station which guide the horizontal movement
of the cars, means to elevate said one platform car on the
station out of the line of cars, means actuated by upward
movement of said platform car elevating means to posi
tively lock the cars adjacent said one platform car to ?x
their positions on the track relative to the station, means
to rotate the elevated platform car at pre-selected inter
vals, and means to successively lower the elevated plat
form car upon successive loading of tiers of bundles on
the elevated platform car until such car is again inter
locked with the line of cars and the track means on the
station are properly realigned with the remainder of the
track means, said locking means being deactuated upon
return of said platform car elevating means to its lower
3. Apparatus for stacking bundles of asphalt shingles
comprising a plurality of platform cars, means to inter
lock the cars for joint horizontal movement of the cars
but allowing for individual movement of the cars in a
vertical direction, a bundle loading station, means to move 20
the cars in either horizontal direction along an axial line
to place one of the cars on the loading station, means to
elevate said one platform car on the station out of the
line of cars, means actuated by upward movement of
said platform car elevating means to positively lock the
cars adjacent said one platform car to ?x their positions
relative to the station, a bundle conveyor, a loading plat
form, means to transfer the bundles from the conveyor
to the platform, means to deposit the bundles of shingles
from the platform to the platform car, means to rotate
the elevated platform car at periodic intervals, and means
to periodically lower the elevated platform car upon suc
cessive loading of tiers of bundles on the elevated plat
form car until such car has been receded to its place in
the line of cars and interlock therewith, said locking means
being deactuated upon return of said platform car elevat
ing means to its lower position.
References Cited in the ?le of this patent
Luce ________________ __ July 12,
Auger et a1. ___________ __ Jan. 9,
Martin et a1 ___________ __ Mar. 30,
Bradsley et al __________ .. Apr. 1,
Boehl et a1 ____________ __ Apr. 21,
Germany _____________ __ July 8, 1949
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