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Патент USA US3085707

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April 16, 1963
3,085,697
E. L. WALTERS
HANDLING EQUIPMENT FOR SHEET MATERIALS
5 Sheets-Sheet 1
Filed Feb. 5, 1960
9
A TTORNE YS
April 16, 1963
3,085,697
E. L. WALTERS
HANDLING EQUIPMENT FOR SHEET MATERIALS
Filed Feb. 3, 1960
5 Sheets-Sheet 2
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A TTORNE YS
April 16, 1963
E. |_. WALTERS
3,085,697
HANDLING EQUIPMENT FOR SHEET MATERIALS
Filed Feb. 3, 1960
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April 16, 1963
E. |_. WALTERS
3,085,697
HANDLING EQUIPMENT FOR SHEET MATERIALS
Filed Feb. 5, 1960
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United States Patent O??ce
3,@85,697
Patented Apr. 16, 1963
1
‘I
ferring a package of glass sheets by the handling yokes;
3,085,697
FIG. 15 is a vertical transverse sectional view of the
HANDHNG EQUIPMENT FOR SPEET
MATERIALS
Emmett L. Walters, Toledo, Ohio, assignor to Libbey
Owens-Ford Glass Company, Toledo, Ohio, at corpora
tion of Ohio
Filed Feb. 3, 1%0, Ser. No. 6,467
8 Claims. (Cl. 214-405)
sling taken on line 15——-15 of FIG. 14;
FIG. 16 is a fragmentary detail view of the sling with
a yoke supported thereon; and
P16. 17 is a horizontal sectional view taken on line
17—17 of FIG. 16.
The embodiments of the handling equipment of this
invention include clamping or handling yokes generally
designated by the letter A, a stationary platform B and a
transfer device or lift sling C, respectively shown in FIGS.
1, 2, 3 and 14. In use, a pair of clamping or handling
yokes A are adapted to be positioned in spaced relation
Thepresent invention relates broadly to the handling
of sheet materials, such as sheets of glass or the like,
and more particularly to improved equipment for the
loading and transporting of a plurality of relatively
on a platform B which is conveniently situated at an area
large size sheets of glass and for the temporary storage
15 adjoining the cutting table at the end of a machine pro
thereof.
ducing sheet material in continuous ribbon formation.
It is a principal object of this invention to provide
One example of such a machine is found in the ?at
equipment for transporting a large number of sheets from
glass industry.
one area of processing to another, which equipment em
In the manufacture of sheet glass, according to the
bodies improved means for securing a plurality of sheets
into a unitary package, and novel means for supporting 20 so called horizontal process, a continuous ribbon is
formed by conventional drawing apparatus and, after
the ?rst-named means during the loading of the sheets
being annealed while moving along a substantially hori
thereon.
zontal path, is capped or cut up into blanks having a
Another object of the invention is to provide, in
length equal to the width of the original ribbon of glass
handling equipment of the above character, means for
securing a plurality of sheets into a unitary package, in 25 and a width dimension that is varied according to subse
quent processing requirements.
cluding a novel type of clamping device so constructed
The sheets or blanks of glass have heretofore been
that a plurality of unitized packages of sheets can be firm
stacked on conventional transfer members, known as “A”
ly stacked one against the other.
Another object of the invention is to provide, in
handling equipment of the above character, clamping
bucks and formed with inwardly inclined surfaces against
30 which the sheets are placed.
When a suitable number of
sheets have been loaded, the bucks are removed to other
devices for securing a plurality of sheets into a unitary
processing areas or placed in storage. This manner of
package and being so constructed that a transferring
glass handling, while entirely satisfactory for certain pur
mechanism can be readily attached thereto to transport
poses, has presented such obvious problems as a reduc
the clamping devices and unitized package of sheets to
35 tion in the number of available transfer bucks while the
different locations.
sheets are temporarily stored and a considerable loss of
A further object of the invention is to provide im
storage space due to the fact that such forms of transfer
members cannot be supported one above another ‘and
consequently individually require a de?nite amount of
floor area. Now, however, by including a plurality of
sheets as a unitized package with a pair of handling yokes,
the package can be easily transferred from one area to
proved sheet handling equipment of the above character
which is strong, sturdy and durable in construction, which
will ?rmly clamp the glass sheets together in shuch a
manner as to minimize breakage thereof, and which can
be conveniently and safely handled.
Other objects and advantages of ‘the invention will
become more apparent during the course of the following
description when read in connection with the accompany
ing drawings.
another or even stacked one above the other with a re
sulting saving in the handling thereof as Well as the re
And it is believed ap
parent that it is within the spirit of the invention to em
45 quired amount of storage area.
In the drawings, wherein like numerals are employed
to designate like parts throughout the same:
ploy the equipment of this invention in the transportation
FIG. 1 is a front elevational view of sheet material
or storage of other sheet materials such as metal or
handling equipment constructed in accordance with this
invention;
FIG. 2 is perspective view of the support platform of
the handling equipment;
FIG. 3 is a perspective view of two packages of sheet
‘material, each contained in handling yokes of the equip
50
plastics.
Referring now more particularly to the drawings, there
is shown in FIG. 1 a support platform generally desig
nated by the letter B, on which a pair of clamping yokes
A are positioned while a plurality of sheets S, such as of
55 glass, are stacked thereupon. After a pair of yokes have
ment and in stacked relation;
been placed in spaced relation on the platform, glass
FIG. 4 is an elevational view of the handling yoke;
sheets are loaded thereon, with the shorter dimension of
FIG. 5 is a top view of the yoke;
FIG. 6 is an enlarged end view of the yoke;
each sheet disposed vertically, until a so-called unitized
FIG. 7 is a vertical vlongitudinal sectional view as
package is completed. Similar support platforms B are
60 also located in other processing areas and a package of
taken on line 7——7 of FIG. 5;
FIG. 8 is a vertical longitudinal sectional view as
glass sheets is transferred thereto when the yokes have
taken on line 8-8 of FIG. 5;
been closed to con?ne the same therein. As shown in
FIG. 9 is a horizontal sectional view as taken on line
FIG. 1, the yokes A are illustrated in their open positions
9—-9 of FIG. 6;
in order that the sheets S can be loaded on or removed
65
FIG. 10 is a fragmentary perspective view of a yoke
therefrom one at a time. Another novel aspect of the
in a partially open position;
invention resides in the fact that by means of the yokes,
FIG. 11 is a transverse sectional view of the support
packages of glass sheets can be easily arranged in stacked
platform as taken on line 11-11 of FIG. 1;
relation, as shown in FIG. 3, for storage purposes. A
FIG. 12 is a fragmentary elevational view of one end
70 transfer means C of the form shown in FIG. 14 is pro
of the support platform;
vided to facilitate transporting of a package from one
FIG. 13 is a fragmentary top view of ‘the platform;
FIG. 14 is an elevational view of a lift sling for trans
area to another :area.
3,085,697
4
The Clamping Yoke
The clamping or handling yoke A (FIGS. 4 through
10) is essentially a rectangular frame 18 comprising a
rigid L-shaped section 19 and an inverted L-shaped sec
tion 20 which is formed of separable members 21 and 22
will be rigidly maintained as a rectangular frame (FIG. 4)
about a package of glass sheets (FIG. 3). For this pur
pose, the top yoke member 21, at its free end, is equipped
with an especially formed block 50 having a recess 51
therein, as shown in FIGS. 6 and 8. The recess 51 is
open through the side wall 52 and the bottom wall 53 of
adapted to be swung relative to one another as well as
block 50. Each of the end portions 54 and 55 of the
in relation to the L-shaped section 19. In this novel
block 50 de?ning the recess 51 therebetween are drilled
structure, the L-shaped section 19 constitutes a base mem
to receive a pin 56 which is generally aligned with the
ber 23 and a vertical side member 24 upon and against
longitudinal axis of the yoke member 21.
10
which the sheet material is stacked on edge, while the
The free end of the member 22 (FIG. 10) is equipped
separable members 21 and 22 of the inverted L-shaped
with a block 60 having a lug or hook portion 61 having a
section 20 are separated, as shown in FIG. 1, or which
notch 62 for receiving the pin 56 when the hook 61 is
combine with the said members 21 and 22 to provide a
located in the recess 51 and engages the pin 56 by the
substantially rigid and rectangular frame 18 around a
notch 62. As illustrated in FIGS. 5 and 6, this engage
package of sheets when said members 21 and 22 are se 15 ment assures alignment of the pivoted side member 22
cured together. The sections 19 and 20 may be formed
with the side member 24 and the top member 21 with the
of square steel tubing although other materials will serve
bottom frame member 23 but more particularly establishes
to equally good advantage. The upper surface of the
a load-sustaining relation whereby the weight of the sheet
lower end or ‘base member 23 and the complementary
materials on the bottom member 23 and carried by the
inner surface of side member 24 of the section 19 are 20 side members 22 and 24 will be equally distributed be
covered with felt layers 25. The open end of each mem
tween the ends of the top frame member 21. As illus
ber 23 and 24 is closed by a block 26 and 27, respectively,
trated in FIG. 10, opening or closing of the yoke A is
to mount the adjoining side member 22 and top member
accomplished by swinging motion of the members 21 or
21 for swinging movement relative thereto.
25 22 toward or away from one another. As viewed in FIG.
More particularly, the horizontal base or bottom mem
1 of the drawings, the yoke members 21 and 22 are locat
ber 23 and a vertical wall or side member 24 are secured
ed in a fully open position.
together at the adjoining ends to form a right angle. This
When the hook portion 61 is engaged in load carrying
is accomplished by cutting the respective ends of the
members 23 and 24 diagonally and then rigidly joining 30
the same so that in assembled relation they will form
the L-shaped section 19.
The end of member 23 is equipped with the block 26
having a horizontally disposed threaded shaft 28 while
relation with the pin 56, the top member 21 and side
thereof, is provided with a block 29 having a downwardly
directed lug 30 provided with an opening for receiving
positioned at the adjoining end of the member 22. The
pin 63, which is substantially L~shaped with a lock bolt
portion 66 and handle 67, is restrained in either of two
positions, i.e. locked or unlocked, by means of stops 68
member 22 are secured from swinging motion to positively
retain the hook portion within the recess 51 and, conse
quently, the pin 56 ?rmly within the notch 62 of the hook,
by means of a locking pin 63 and associated keeper plates
64 and 65. The plate 64 is ?xedly mounted on the end
the pivoted frame or side member 22, in the lower end 35 surface of the block 50 while the plate 65 is similarly
the shaft 28. As shown in FIGS. 4 and 6, a nut 31 is
turned onto the shaft 28 until a washer 32 lightly engages
the face of block 26 so that the side member 22 may 40 and 69 which are secured to the end of the block 50 as
readily be swung in an are without appreciable deviation
shown in FIGS. 4 and 6. The stop 68 is located above
from a vertical plane. The nut 31 and shaft 28 are then
cross-drilled and ?tted with a locking pin 33.
T e block 27, at the upper end of the side member 24,
supports the pivoted top frame member 21 on a threaded
shaft 35 projecting vertically from said block. For this
purpose, the proximate end of the top member 21 is fitted
with a block 36 having a hole therein for receiving the
threaded shaft 35. In assembling the top member 21
for swinging movement relative to the side member 24,
and substantially in a horizontal plane, a washer 37 and
nut 38 are placed on the upper surface of the block 36
and a washer 39 put on the shaft 35 which is then in
serted through the opening in the block. The nut 38 is
the keeper plate 64 a distance substantially equal to the
thickness of the handle 67 while the stop 69 is positioned
a similar distance thereabove. The stop 68 is also of
su?icient length to insure that when the handle is located
as in FIG. 10, the end of the bolt 66 will be located above
the plane of the bottom wall of the member 21 and well
out of engagement with the keeper plate 65 on the frame
member 22. Also, the stop 69 is located in substantially
axial alignment with the axis of the lock bolt 66 to the
end that the locking pin 63 cannot be inadvertently with
drawn to remove the bolt 66 from the keeper plate 64.
When the locking pin is to be moved between either of
the positions in which it is shown in FIGS. 6 and 10,
then threaded onto the shaft 35 until a ?rm but freely 55 the handle 67 is swung outwardly to a position as indicat
rotatable association between the frame members is ob—
ed in broken lines 67a in FIG. 4 and the bolt 66 lifted
tained. Thereafter, access may be had through either
from or inserted into the keeper plate 65 after which the
the open end of the member 21 or previously drilled
handle is swung inwardly above or below the stop 68.
holes 46 (FIG. 4) in the side walls 41 and 42 thereof
Thus, when the rectangular frame of yoke A is completed
for drilling through the nut and shaft to secure the nut 60 by location of the side frame member 22 in parallel with
from rotation upon the insertion of a pin 43.
the side member 24 and the top member 21 similarly
The pivoted member 21, constituting the top element
of the yoke A, is additionally provided with pairs of up
wardly and outwardly inclined guide plates 45 and 46;
the pair 45 being located at the end of said member in the 65
vicinity of the block 36 therein. The pair of guide plates
located with respect to the bottom member 23, the hook
portion 61 will be engaged with the pin 56 in recess 51
and the pin 63 in keeper plates 64 and 65 will maintain
this closed relation of the respective frame members.
Th pivoted side member 22 is equipped with a clamping
46 are located substantially midway between the ends of
device 70 whereby sufficient pressure can be exerted on
member 21 and are provided with circular holes aligned
the package of glass sheets to ?rmly retain them within
with holes of the same diameter in the side walls 41 and
the yoke. For this purpose, a T-shaped bar 71 is slid
42 and through which a hanger rod 47 is inserted. Each 70 ably supported in the inwardly directed wall 72 of the
end of rod 47 is provided with an enlarged head 48 formed
member 22 with the leg 73 thereof passing through a ver
by welding a washer to a reduced diameter on at least one
tically disposed slot 74 in said wall, as shown in FIGS.
end of the rod.
}
4, 6 and 9. The outer surface 75 of the T-bar is covered
The free ends of the pivoted yoke members 21 and 22
with a layer of felt 76 or other cushioning material.
are adapted to be secured together so that the yoke A 75 The clamping device is propelled toward or retracted
8,085,697
6
at the juncture of each transverse channel 98‘ and the
from the surface of the outermost glass sheet of a pack
channel 102 and terminate at the level of the channel 114.
age by means of a threaded rod 77. As shown particular
On the other hand, the posts 111 and 112 are secured
ly in FIG. 9, the outer end of the threaded rod 77 is pro
at their lower ends to the channel 102 in substantial align
vided ‘with a hand knob 78 while the opposite or inner
ment with the table channels 100‘. The posts 111 and
end 79 of the rod is rotatably attached to the leg 73 of
112 are considerably longer than the adjoining posts 110
the bar '71. More particularly, the end of the rod which
and 113 and the forwardly facing surfaces of their up
is attached to the bar 71 is reduced in diameter and pro
wardly extending ends are interjoined by an angular brace
vided with an annular groove 80. The bar leg 73 carries
115. At the upper ends of these posts, an angle iron
a socketed block 81 in which the rod end 79 is retained
by a pin 32 which passes through holes in the block 10 stop plate 116 is provided. Each of the plates 116 is
secured to the outwardly directed surface of the chan
aligned with one side of the groove. The threaded rod 77
nels and with a leg portion 117 directed substantially in
is rotatably mounted in an internally threaded block 83
alignment with the rear surface of the adjacent brace
that is ?xedly mounted in the outwardly directed wall
115. In spaced relation beneath the brace 115, a second
34 of the yoke member 22. Consequently, when the rod
77 is turned by means of the knob 78 and progressively 15 angular brace member ‘118- is secured to forward sides of
moved inwardly of the member 22, the clamping device
70 will be carried outwardly to establish ?rm contact be
the posts 111 and 1112. The horizontally disposed and
forwardly directed legs 11h or 120 of the braces 115 and
tween the felt surface 76 and the outwardly directed sur
face of the last sheet in the unitized package, as indicated
in broken line in FIG. 4.
118, respectively, are adapted to serve as support surfaces
or ledges for pivoted top members 21 of the yokes A, as
will be hereinafter more fully :set forth. Also, the outer
The Support Platform
most channel 98‘ of each table area 89‘ and 90 is formed
with a notch 121 (FIG. 2) in which a pivoted side mem
ber 22 is received when a clamping yoke is in the open
The support platform B, as viewed in FIGS. 2, ll, 12.
and 13, includes a framework 87 which is generally U
position shown in FIG. 1.
shaped in plan and is formed with a base portion 88 hav 25
The actual supporting surface of the table areas 89
ing end table or yoke support areas 319‘ and 90‘ and with
and 90 is provided by channel members 125 and 126 lo
a substantially vertically disposed back wall 91.
The table or yoke support areas 89‘- and 911 of the base
cated in parallel, spaced relation with the channels 101
and 102. The channels 125 and 126- are secured at their
portion 88 and the back wall 91 position a pair of clamp—
ends to the structural members 911 and 100 and, as seen
ing members or yokes A so that they will be equally spaced 30 in FIG. 11, are located at a slight ‘angle to the horizontal
from the ends of the glass sheets while the same are
loaded thereupon. This enables a package of sheets to
be formed while the yokes are arranged in spaced relation
so that a plane along a transverse line across their top
18, 99 and 100 of both table areas are secured to a longi
angular relation to the posts 110—113 and the line of a
plane across the surface of ‘the leg 129 will be coincident
on the surface of said channel.
surfaces will be inclined rearwardly from the front of
the stand generally. A wall is provided along the rear
and according to the length of the sheets so that the weight
edges of each channel 126 by securing an angular struc
‘thereof will be suitably balanced when a unitized package 35 tural member 127 lengthwise to the adjoining surface of
is to be removed from the platform B and transported to
said channel and at its ends to the posts 110-111 and
another area. For ‘this purpose, the support areas 89-99
112-413. If desired, reinforcing or gusset plates 128
and back wall 91 are each equipped with locator mem
may be secured to the posts 110-111, posts 112-113, the
bers, generally designated by the numerals 92, 93' and
channel member 114 and the structural member-s 127.
94, that form aligning slots 95 and 96 in which the yokes
The vertically inclined leg 129 of each angle 127 is dis
are located. Accordingly, the slots 95- will properly lo
posed at a slight angle to a perpendicular plane and more
ca-te a pair of yokes to support 1a plurality of glass sheets
especially at substantially a right angle to the inclined
having a relatively shorter length ‘than a like plurality of
upper surface of the channel 126. The inclination of
sheets to be placed on yokes located in the aligned slots 96.
these surfaces affords a positive support for a yoke A, as
More particularly, each of the table areas 89‘ and 45 shown in FIG. 11, such that while glass sheets are being
90 is formed by ‘transversely disposed structural members
stacked on the L-shaped section 19* thereof, or being re
98, 99 and 1410 that are joined at their forward ends
moved, they will “lean” inwardly of the stand and thus
to a longitudinally extending structural member or chan
be prevented from falling. In order to ?rmly support each
nel 101. At their opposite ends, the structural members
yoke, the previously described channel 114 is secured in
tudinally disposed channel or structural member 102 there
by establishing the space separating the table areas. As
shown in FIGS. 2 and 13, ‘the innermost members 100' of
the table areas are inter-connected by a bracing mem
ber 1113 which is located substantially midway between “
their ends in parallel with the member 102. This arrange
ment provides a central, open area to facilitate entry of
an operator to place or remove a sheet of glass on a pair
As above mentioned, locator members 92, 93 and 94
are provided for accurately positioning a clamping yoke
A in either of two positions on each of the table areas
89 and 90. The locators are mounted on the channels
125, 126 and the channel 114 and include suitably spaced
blocks 130, 131 and 132 which ‘are arranged in aligned
sets of three each. Each block of the locators is spaced
of yokes A which are supported by the platform B in
the manner described above. A layer of felt is provided
from an adjoining block by an amount su?icient to create
on the channel 103 to protect the legs of operators carry
the locating slots 95 and 96, each slot having a width
ing a glass sheet and entering this open area in the plat
slightly greater than the thickness of a yoke. The distance
form between the supporting areas 89‘ and 911 thereof.
between the pairs of locating slots. is determined by the
The end channels 191 at the front of the platform are
average length of the glass sheets and accordingly the
supported on individual legs or pedestals ‘104 while the 65 inner pair of slots 95 may be utilized for sheets of one
channel member 102 at the rear of the stand is mounted
length and the outer pair of slots 96 for sheets of a greater
on a channel 105 which constitutes the rear leg or pedestal.
length. More especially, the length of the glass sheets is
And the legs 1041 and 105 are equipped with horizontally
determined by the width of the glass ribbon as it is formed
disposed plates 106 which serve as supporting foot sur
and the yokes A are preferably spaced inwardly from the
faces for the framework 87.
70 ends of the sheets so that an equilibrium of balance will
The back wall 91 is formed by a plurality of vertically
be maintained when the yokes A are lifted from the plat
disposed posts 110, 111, 112' and 113 that are spaced along
form B by a sling C.
Provision is also made for supporting the sheets of
the channel 102 and inter-connected by a horizontal struc
glass in their central planular areas by way of a brace
tural member or channel \114. The posts 110 and 113
are located in the corners of the framework 87 formed 75 135 Which is ?xed at its lower end to a structural mem
3,085,697
7
8
her 136, extending between the channels 102 and 103, and
“left-hand” thread. Each hanger plate (FIG. 15) is pro~
at its upper end to the channel member 114. Preferably
vided with a ?xedly mounted collar 174 having an in~
ternally threaded opening operatively meshing with a re
the forwardly facing surfaces of the channel 103 and
brace 135 are covered with a protective layer 137 as of
felt. And while the platform B, in its entirety, may be as
sembled ‘by the use of securing means, such as bolts or
spectively located worm.
A plate 163, mounted on a
_ worm 171, and a plate 164, mounted on a worm 172,
will accordingly move inwardly toward one another dur
ing rotation of the shafting 165 in one direction and, con
versely, away from one another during reverse rotation
ture.
of the shafting.
The Lift Sling
The collars 174 are mounted adjacent the upper end of
The lift sling C has heretofore been described as a 10 each plate 163 or 164- while a bayonet~type opening 175
transfer or transporting device for a package of glass
is formed near the lower end thereof. Each bayonet
sheets and is adapted to carry the same upon engagement
type opening is formed with an upper circular area 176
with the rod 4-7 of each of the pair of yokes A in which
suf?ciently large to freely pass the head 48 of a rod 47
rivets, it has been shown to be a completely welded struc
the sheets are contained. The sling can thus be employed
with a bridge crane or lift truck to remove a unitized
15 therethrough and a lower area 177 in which the body
of the rod will ?t but which is smaller than the head
48. Accordingly, when the rods 47 are horizontally
aligned with the upper areas 176 of the hanger plates 163
and 164, rotation of the shafts 167 and 168 in one direc
tion will move the plates 163 and 164 inwardly or toward
one another until the enlarged heads 48 of the rod 47
have moved through the areas 176 and are located out
package of sheets from a platform B and, by the yokes A,
carry the same to a second processing area or to a storage
area. For this purpose, the lift sling has a beam member
140 equipped with a plurality of ?xedly mounted locator
devices 141, 142, 143 and 144 that are arranged in pairs
inwardly from the ends of the beam. The locator devices.
are generally spaced apart a distance equal to the spac
wardly of the said hanger plates. Upon upward motion
of the lift sling, as by a crane, the plates are raised rela
surfaces of the platform. Accordingly, the outwardly
positioned locator devices 141 and 144 will be operatively 25 tive to the rods 47 until the rods are received in the lower
slot areas 177 whereupon continued upward motion of
aligned with the outwardly disposed pair of slots 96 while
the
sling will lift the yokes and package of sheets from
the locator devices 142 and ‘143 may be similarly posi
the platform B.
tioned with reference to the inwardly disposed pair of slots;
ing between the locator slots 95 and 96 on the support
95.
To carry the lift sling by means of a crane or lift
Cooperating with the several locator devices are a
truck, the upper leg 180 of the beam 140 is equipped
plurality of pairs of support members 145, 146, 147 and
with so-called “grab-irons” 181 adapted to be engaged by
148. As will be more fully hereinafter described, each
a cable or hooks, indicated in broken lines 182 in FIG.
14. Each grab-iron is formed with aligned leg portions
to engage and lift a yoke A with the ?rst pair effective
183 secured to the surface of the upper leg 180 of the
when the yokes A are resetting in the outermost slots
beam 140 and with a medial portion 184 that is bent up
96 and the second pair effective when the yokes are rest
wardly
in an inverted V-shape.
ing in the inner slots 95.
In use, a pair of clamping members or handling yokes
As viewed in FIGS. 14, 15 and 17, each locator de
A are arranged on the table areas 89 and 90 of the sup
vice is comprised of an L-shaped bracket 150 and a
U-shaped locator member 151. The bracket 156, in each 40 port platform B in the pairs of locator notches 95 or 96
according to the length of glass sheets to be placed there
instance, is secured at the end of its horizontally dis
upon. As illustrated in FIG. 1, a yoke A is positioned
posed leg 152 to a mounting block 153 by bolts 154; the
in each of the inwardly disposed locator slots 95. Ac
blocks 153 depending from the lower leg 155 of the beam
cordingly, the lower member 23 of each yoke will be
140. The vertically disposed leg 156 of each bracket
located between the blocks 131 and 132 of the locators 92
terminates at its lower end in a vertical wall 157 to
which the web 158 of the locator member 151 is secured 45 and 93 on the table areas 89 and 90 while the side mem
bers 24 will be received between the blocks 131 and 132
by screws 159. The outwardly directed ?anges 160 of
of the locator 94 on the back wall 91.
each member 151 are spaced apart a distance slightly
pair of support plates 145-148 and 146~147 is adapted
greater than the thickness of the side member 24 of a
yoke which is to be received therebetween. The ?anges
160 are formed with outwardly bent or ?aring ends 161
to afford guiding surfaces which upon engagement with
the side member 24 of a yoke A will cause shifting of the
lift sling until each of the locator members is properly
registered with its respective yoke. While acting to locate
the lift sling C with respect to a pair of yokes A, mounted
in spaced relation on the platform B, the rigidly mounted
‘
Since each yoke is usually mounted on the respective
table surfaces of the platform in a closed condition, the
handle 67 of each lock pin 63 is swung outwardly from
beneath the associated stop 68 and lifted to remove the
lock bolt 66 from the keeper plate 65 on the yoke side
member 22. The handle is then swung inwardly to rest
on the upper surface of the stop 68. The pivoted side
member 22 and top member 21 of the clamping yoke A
at the right hand end of the platform (FIG. 1) are now
members 150 may also serve to maintain the yokes from
swung apart as shown in FIG. 10 till each is at the full
swinging movement while a package of sheets is being
open position shown in FIG. 1. As shown in FIG. 1,
the side members 22 open away from each other and
the top members 21 open toward each other. More
speci?cally, the notch 62 of hook 61 at the end of the
member 22 will disengage the pin 56 in the recess 51 of
carried thereby.
Each pair of support or hanger members 14-"—14$
and 146—147 includes vertically disposed plates 163 and
164 located on opposite sides of amounting block 153 and
carried on a shafting arrangement 165 which is operative
ly driven by a motorized unit 166. This shafting com
prises axially aligned shafts 167 and 168 which are jour
naled in bearings 169 secured to and depending from the
lower leg 155 of the I-bearn. The inwardly opposed
ends of the shafts 167 and 163 (FIG. 14) are connected
to the out-put shafts of the motorized unit 166 by means
the block 50 at the end of the associated member 21 and
the members 22 will be swung downwardly to a position
r in which they are received in the notches 121 of the chan
nels 98 of the platform.
As previously mentioned, each of the horizontally dis
posed legs 119 and 120 of the structural brace mem~
bers 115 and 118 respectively provide support for the
70 frame members 21 of one size yoke, when in their open
positions. As shown in FIG. 1, the members 21 are lo
Each shaft 167 or 168 is equipped with pairs of worms
cated on the leg 120 of the brace member 118 and fur
171 and 172, on which a hanger plate 163 or 164 is
threadably carried. The worms 171 and ‘172 are secured
ther‘opening or swinging movement is arrested by the
portions of the posts 111 and 112 between the braces
on their respective shafts by pins 173 and are arranged in
pairs; each pair having a worm with a “right-hand” or 75 115 and 118. However, in the event that the yokes A
of couplings 170.
3,085,697
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.
1O
are formed with side members 22 and 24 of a longer di
mension than those herein described and shown to accom
clamping yoke comprising an L-shaped section including
modate wider sheets of glass, the top members 21 will
be received on the legs 119 of the brace 115 and further
swinging movement will be halted by the stops 116 pro
vided for this purpose.
rigdily thereto, a top member pivotally carried at the
Upon completion of a unitized package of sheets, the
side member 22 of each yoke is swung upwardly and the
associated top member 21 is moved to
61 in the recess 51 with the notch 62
56. The handle 67 is manipulated in
lviously disclosed to lower the lock bolt
a base member and an upright rear wall member joined
upper end of the rear wall member, and a front wall
member pivotally carried at the outer end of the base
member, said top and front wall members of the clamping
yokes being pivotable to positions to one side of said
L-shaped section during stacking of the sheets thereon
and being adapted to subsequently be releasably secured
receive the hook
engaging the pin 10 to each other to form with said L-shaped section a rectan
gular frame surrounding the stack of sheets, and position
the manner pre
ing means on the base portion and back wall of said sup
66 when the bolt
openings of keeper plates 64 and 65 are axially aligned.
port platform for removably locating the clamping yokes
in properly spaced relation to receive the sheets on the
web 75 of the bar 71 against the surface of the outer 15 L-shaped section thereof.
‘2.. In sheet handling equipment as claimed in claim 1,
most sheet of glass by advance of the screw shaft 77
in which said positioning means includes locator members
through the threaded block 83. This completes the pack
on the base portion and back wall of the platform in sub
age wherein a plurality of sheets of glass are clampingly
stantial alignment with one another and arranged in
held as a unitized package by the clamping members 70
The hand knob 78 is next turned to move the felt covered
with the weight of the sheets evenly apportioned between 20 equally spaced relation to locate a pair of clamping yokes
in parallel spaced relation to one another.
the two supporting yokes A.
‘3. In sheet handling equipment as claimed in claim 1,
To remove the package of sheets from a platform
in which one of the pivoted members of each said yoke
B, a sling C is positioned above the yokes A and lowered
is provided with means for clamping a stack of sheets
until the rods 47 of said yokes are aligned with the larger
areas 176 of openings 175 in the plates 163 and 164 of 25 against the oppositely disposed portion of the L-shaped
section of the respective yoke when said L-shaped section,
the pairs 146 and 147. At the same time, the locator
top member and front wall member are associated with
members 142 and 143 will register with each yoke to
one another to form a substantially rectangular frame.
position the side member 22 between the ?anges 160.
4. In sheet handling equipment, in combination, a plat
While the aligned relation of the larger area 176 of the
form having a substantially horizontal supporting base
opening 175 with the rods 47 is maintained, the drive
portion and a substantially vertical back wall, a plurality
unit 166 is operated to rotate the shafts 167 and 168 in
of clamping yokes, each comprising an L-s'haped section
such direction that the worms 171 and 172 thereon will
and an inverted L-shaped section, the L-shaped section in
advance the plates 163 and 164 toward one another.
cluding a substantially horizontal bottom member and a
When the enlarged heads 48 of the rods 47 are located
as shown in FIG. 16, the sling is lifted to raise the plates 35 substantially vertical side member rigidly joined together,
the inverted L-shaped section including a top member
163 and 164 thereby engaging the rods by the rod-con
and a vertical side member, means for pivotally connect
?ning lower areas 177. By means of conventional con
ing the inner end of said top member to the upper end of
veyors, such as overhead cranes or lift trucks, equipped
the vertical side member of the L-shaped section to swing
with the sling C, a package of sheets is safely transported
about a substantially vertical axis, and means for pivotally
either to an area for subsequent processing operations or
connecting the lower end of said vertical side member to
to a storage area. In the event that the sheets are to be
the outer end of the bottom member of said L-shaped
stored, one package is stacked upon another as shown in
‘section to swing about a substantially horizontal axis, the
FIG. 3. This is accomplished by lowering a second pack
pivoted top member and pivoted side member of the in
age so that the lower frame members 23 of each yoke
A are within each pair of guide plates 45 and 46 carried 45 verted L-shaped section being provided at their adjacent
ends with means inter-engaging one another, and means
by the top members 21 of the lower yokes A. When
for locking said inter-engaging means together, the base
proper location of the lower members 23 of the upper
portion and back wall of said platform being provided
yokes with reference to the top members 21 is obtained,
with means for removably positioning the L-shaped sec
the sling is lowered to place the bottom surfaces of the
said lower members 23 in ?rmly supported relation on 50 tions of the clamping yokes in properly spaced relation
during stacking of a plurality of sheets on edge upon said
the upper surfaces of the top members 21.
L-shaped sections, the pivoted top member and pivoted
To release the sling C from the yokes A, the sling is
side member forming the inverted L-shaped sections being
lowered to move the openings 176 in the plates 1631 and
movable about their respective axes to positions to one
164 into axial alignment with the rods 47. Upon opera
tion of the motorized unit 166, the shafts 167 and 168 55 side of the L-shaped sections during stacking of the sheets
thereon and subsequently into engagement with one an
are driven in the direction opposite from the ?rst direction
other to cooperate with the L-shaped sections to form the
of operation, with the resultant movement of the plates
rectangular frame and retain the ‘stack of sheets therein.
163 and 164 of particularly the pairs 146 and 147 out
5. In sheet handling equipment as vclaimed in claim 4,
wardly from one another along their respective worms
171 and 172‘. The sling may then be removed by upward 60 in which the pivoted top members of the clamping yokes
are provided with means for guiding the L-shaped sections
and lateral movement leaving the package of sheets sup
of a second pair of clamping yokes into supported relation
ported on a platform B for unloading or to receive an
upon the top members of a ?rst pair of clamping yokes.
other package in stacked relation.
6. In sheet handling equipment as claimed in claim 4,
It is to be understood that the form of the invention
herewith shown and described is to be taken as a pre— 65 in which the pivoted side members of the inverted
L-shaped sections are provided with means for clampingly
ferred embodiment of the same, but that various changes
engaging the stack of sheets when the L-shaped sections
in the shape, size and arrangement of parts may be re
and inverted L-shaped sections are arranged to form rec
sorted to without departing from the spirit of the inven
tangular frames thereabout.
tion or the scope of the subjoined claims.
7. In sheet handling equipment as claimed in claim 4,
70
I claim:
including connecting means carried by the top member
ii. In sheet handling equipment, in combination, a sup
of said inverted L-shaped section for engagement by a
port platform including a substantially horizontal base
transfer apparatus to permit handling of the stack of
portion and a substantially vertical back wall secured
sheets carried within the clamping yokes.
thereto, a plurality of clamping yokes positioned on said
8. In sheet handling equipment, in combination, a plat
support platform for receiving a stack of sheets, each said 75
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12.
11
form having a substantially horizontal supporting base
portion and a substantially vertical back wall, a plurality
of clamping yokes, each composed of an L-shaped section
and an inverted L-shaped section including members piv
otally carried at the opposite ends of the L-shaped section
and cooperating therewith to form a rectangular frame,
the base portion and back Wall of said platform being pro
vided with means for removably positioning the L-shaped
sections in properly spaced relation during stacking of the
sheets on edge upon said L-shaped sections, the said mem 10
bers forming the inverted L-shaped sections being mov
able to positions to one side of the L-shaped sections dur
ing the stacking of the sheets thereon and subsequently
into locking engagement with one another to coact with
the L-shaped sections to retain the stack of sheets in 15
position, means on the base portion of the platform for
supporting one pivoted member of each yoke, and means
on the back wall of said platform for supporting the other
pivoted member of each yoke when said pivoted members
are moved. to positions to one side of the L-shaped section
and said L-shaped section is located by said positioning
means on the platform.
References Cited in the?leof this patent
UNITED‘ STATES‘ PATENTS
642,962
Danner _______________ .._ Feb. 6, 1900
1,029,139
Moltrup _____________ __ June 11, 1912
1,741,051
1,772,734
‘1,883,373
2,005,099
2,262,794
2,305,405
vFord ________________ __ Dec.
Romine ______________ .. Aug.
Hilliard ______________ __ Oct.
McLeod _____________ __ June
Burbank _____________ __ Nov.
Burrell ______________ _- Dec.
2,384,307
2,462,691
Husson et al. __________ __ Sept. 4, 1945
Thompson ____________ __ Feb. 22, 1949
1,001,473
Germany _____________ __ Jan. 24, 1957
24,
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15,
‘1929
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