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Патент USA US3028027

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April 3, 1962
G. c. CORLEY
3,028,017
HOIST APPARATUS
Filed Oct. 19, 1959
IN VEN TOR.
United States Patent 0 " 1C6
1
3,028,017
HOIST APPARATUS
Gale C. Corley, 1207 Beech St., Valparaiso, Ind.
Filed Oct. 19, 1959, Ser. No. 847,422
9 Claims. (Cl. 212-58)
3,928,617
Patented Apr. 3, 1962
2
In accordance with the invention, a crane with a hoist
boom having a line extending therefrom for lifting a
load has an elongated support attached to the boom and
extending at right angles thereto. A tag line rigging
runs from a load carrying member to a point on the sup
port spaced laterally from the load line. A weight may
be provided on the tag line to supply tension force to a
This invention relates generally to hoisting apparatus
and more particularly to apparatus for reducing the
swinging action of loads being hoisted by cranes, derricks
portion of the rigging coupled to the load to exert a
to station such a crane at a convenient location where
increase the angle at which dampening force is applied
are handled by men who pay out or take in the loose
mounted at its lower end on frame 11 and may be lowered
dampening force when the suspended load swings at right
10 angles to the boom. The rigging is self-adjusting to all
and the like.
vertical positions of the load and friction in the rigging
In the construction industry mobile cranes equipped
slows the movement of the tag line. A horizontal slid
with long booms are often used for hoisting and moving
ing link may be provided which encircles the rigging to
construction materials at erection sites. It is customary
most of the material transporting can be accomplished 15 to the load as the load is raised, to dampen longitudinal
sway of the rigging, and to increase the running friction
by pivoting the crane on its carriage. Due to the swing
of the rigging. Alternately the tension in the tag line
of the crane boom, an undesirable oscillatory or swinging
may be provided by a spring which resists swinging move
motion is imparted to the material suspended beneath the
ment and dampens the same while still allowing vertical
outer end of the boom. As a result, time is lost waiting
movement of the load.
for the hoisted material to cease swaying to and fro be
. Referring now to the drawing, FIG. 1 shows in simpli
fore it may be lowered with su?icient accuracy into its
?ed form a mobile crane of the type customarily em
desired position.
ployed at construction sites. A wheeled carriage 10 sup
To overcome this problem one or more loose trailing
ports a revolving frame 11 mounted for rotation on a
tag lines have been attached to the suspended material
so that assistance could be given to the crane operator 25 vertical axis. The frame carries hoisting machinery en~
closed in a cab 12. A long hoist boom 13 is pivotally
in lowering the material into position. These tag lines
or raised by means of a boom suspension cable 14. The
upper end of boom 13 supports a pulley 16 over which
dency of the load to swing. Such use of man power is
extremely expensive and mechanical means for auto 30 is reeved a hoist cable or line 17. The working end of
hoist line 17 carries a weighted swivel ball 18 and a hook
matically preventing suspended material from swinging,
19 for use in hoisting construction material such as the
thereby saving time and labor cost, is desired.
prefabricated wall panel 20. A power operated tag line
Accordingly, it is an object of the present invention to
21 may be connected at its working end to a hoisting ?x
provide simple and inexpensive apparatus which dampens
the swinging motion of loads suspended from hoist 35 ture 22.
The simpli?ed structure described thus far is entirely
booms.
conventional and its operation well understood in the
Another object is to provide an anti-swing device for
art. Consequently no detailed description thereof is
construction cranes operable without power machinery
lines as needed, thereby manually controlling the ten
and which may be installed as an accessory item to ex
isting crane structures.
A further object is to provide a universal antiswing
device which will reduce the amplitude of swing of ma
terial suspended from a crane regardless of the elevation
and direction of swing of the material.
A feature of the invention is the provision of a crane
hoist having a tag line connected to the load carrying
member and supported at a point spaced laterally from
the hoist boom and resisting movement of the load trans
versely with respect to the boom.
Another feature is the provision of self-adjustable tag
believed necessary except to note that such hoisting ap
40 paratus, without further structure provided in accord
ance with the invention, allows undesirable side to side
swinging of material suspended from the hook 19, as
indicated by the arrows. However, as long as tension is
‘maintained on tag line 21, the suspended material will
45 be held from swinging in or out in the longitudinal plane
de?ned by hoist line 17 and boom ‘13.
In order to prevent the aforementioned side to side
or lateral oscillations, anti-swing apparatus in accordance
with the invention is attached near the upper end of
50 boom 13._ This includes a horizontal cross member or
jib beam 23 fastened at right angles to the plane includ
line rigging a?ixed to a hoisting hook which exerts damp
ing boom 13 and line 17 running from pulley 16. In its
ening tension thereon in a plane substantially at right
simplest form, the rigging consists of a pulley or block
angles to the hoist boom. The rigging may include a
27 attached to beam 23 by hook 26 through which is
running tag line suspended from a pulley hung from the
outer end of the cross member and tensioned by a weight, 55 strung or reeved a tag line 28. The working end of
tage line 28 is affixed to swivel ball 18 of hook 19 by
or may include a spring for providing tension.
means of a hook and eye assembly 29 while the other
A further feature is the provision of a belt-like link
end of line 28 carries ‘a weight 31. The weight 31 is
member slidably encircling a weight tensioned tag line
lighter in weight than the ball 18 to insure dropping of
and adapted to move with the weight to dampen swing
ing movement of the weight as well as to increase the 60 hook 19 when unloaded.
An endless belt or strap 32 may encircle the portions
tensioning angle between the tag line and hoist line.
of tag line 28 which extend from either side of block
In the accompanying drawing:
27, and is af?xed at one end to the Weight 31 so as to
FIG. 1 is a perspective view of a mobile crane equipped
form a sliding link movable vertically therewith. It is
with anti-swing rigging in accordance with the invention;
FIG. 2 is a fragmentary perspective view illustrating 65 to be noted that the vertical portion of hoist line 17,
the jib 23, the running portions of tag line 28 and the
a modi?cation in the rigging of the anti-swing device of
sliding link 32 are disposed generally in a lateral plane
the invention;
at right angles to the longitudinal plane of boom 13
FIG. 3 is a fragmentary perspective view illustrating
and hoist line 17.
another embodiment of the invention; and
The beam 23 may extend beyond boom 13 on the
FIG. 4 is a fragmentary view illustrating a spring ten- '
side opposite pulley 27 and carry a weight 24 which
sioned tag line.
3,028,017
3
4
counter-balances the laterally disposed anti-swing rig
26. This increases the frictionof the rigging and furnishes
ging suspended from hook 26.
The beam 23 need not
the mechanical ‘advantage of. a block and tackle asserni
have a portion extending on the opposite side of the
bly, the rigging of FIG. 2 being merely illustrative of one
boom if the boom is sufficiently rigid to resist the twist
form among many possible variations. In this embodi
ment the sliding link 36 is longer than the link 32 in
ing force applied by the anti-swing rigging.
In operation, hoist line 17 is payed out so as to lower
hook 19 to the object to be hoisted. The working end of
tag line 28 runs downward to accommodate this vertical
order to encompass all the strands of tag line 28. The
two spaced strands reeved from block 33 run through
link 36 ‘and thereby tend to prevent weight 31 from
swinging longitudinally, providing a more stable rigging
travel, the counter weight 31 moving opposite to the
movement of hook 19 and thus upward toward pulley 10 structure.
27. The amount of vertical travel required in a par
In FIG. 3 there is shown another embodiment of the‘
ticular hoisting operation determines the length of line
invention which may be preferable for certain applica
23. If it is desired to shorten the amount of vertical
tions. The tag line 28, after passing over pulley 27
travel of counterweight 3-1 so that the lowest position
supported from beam 23, is returned to a position along
of weight 31 will not interfere with fully hoisted mate
the hoist boom 13. The line extends over pulleys 37
and 38 so that the weight 31 is displaced from the load.
rial, then the fixed end of tag line 28 can be secured
to jib 23 and a suitable weighted pulley suspended inter
Accordingly movement of the weight ‘as the load is
mediate pulley 27 and the ?xed end. Other changes of
moved vertically does not interfere with the other opera
the rigging to accommodate various working conditions
tions.
will undoubtedly occur to those skilled in the art with
In FIG. 3, a rigid longitudinally extendible member,
out varying from the concept of the invention.
such as a hydraulic telescoping tube 41}, can be used in
place of the tag line 21 of FIG. 1. This construction
The material to be hoisted, such as the wall panel 20,
is then secured to hook 19 by means of ?xture 22.
can be used in any of the described embodiments of the
When the material is to be elevated without lateral dis~
invention. By extending tube 40, it is possible to posiplacement, a swinging motion may result. This may be 25 tion the suspended material beyond a point vertically
produced by various causes such as wind blowing against
beneath the pulley 16. Tag line 28 will not interfere
the panel. This condition is aggravated when it is neces
with such movement since it can be drawn out in any
sary to move the material laterally as well as vertically
direction. A spring retarding swivel 41 is provided be}
from its original location to the point of placement. This
tween ball 18 and hoist ?xture 42, in place of hook 19,
may be done by rotating the cab 12 and boom 13 on 30 to prevent wall panel 20‘ from rotating when suspended
the carriage of the crane so that the material moves
therefrom. Considering the action of the anti-swing rig;
in an are about the vertical axis of the crane. Accelera~
ging and the rigid positioning tube ‘40, it will be seen
tion and deceleration forces, tangential to the arc of
that this embodiment provides a very positive, damped
system for accurately placing construction materials with
movement of the material, are exerted on the suspended
material in starting and stopping this rotation of the 35 out manual assistance.
crane. Reaction forces in turn induce undesirable lateral
In FIG. 4 there is illustrated an embodiment of the in
swinging movement in the direction of the arrows in
FIG. 1, but the anti-swing rigging of the invention op
poses this motion so that it is immediately and effectively
vention wherein tension is provided in the anti-swing line
swinging hoist line 17 at a point as far as practical from
the center of rotation (boom pulley 16) for maximum
of the load in a direction other than the transverse di
rection as illustrated. Further, more than one such line
dampening effect.
can be used to prevent swing in different directions. Such
by means of a coil spring rather than by a weight. A
beam '45 extends from the boom 13 generally similar to
damped.
40 the beam 23 of the prior embodiments. Connected be
The dampening effect results from the lateral tension
tween beam 45 and the ball 18 of the load carrying
force exerted by tag line 28 on the suspended material.
member is a line 46 including a coil spring 47. The coil
Although no force is provided to oppose lateral swing
spring 47 must have su?icient ?exibility to permit raising
ing movement towards weight 31, swinging movement
and lowering of the ball 18‘ ‘and to not substantially dis}
away from weight 31 is opposed by the force necessary
place the ball 18 from its vertical position below pulley
to raise weight 31. Intentional frictional forces are
16. However, when the ball 18 and load attached thereto
built into the rigging structure so that weight 31 drops
tend to swing in a direction transverse to the beam, the
slowly enough to slacken tag line 28 as the material
tension of the spring 47 Will resist such movement and
swings once again toward weight 31. Thus the energy
tend to return the load to its proper vertical position.
stored in raising weight 31 is expended in overcoming .
It is to be noted that the anti-swing line, as illustrated
rigging friction. The dampening force is applied to the
in the various embodiments, can be used to prevent swing
The dampening effect is also increased by increasing 55 a line could be used to prevent swinging movement in
the angle between the vertical portion of hoist line 17
the direction of the beam and thereby eliminate the
and the portion of tag line 28 a?ixed to ball 18. Sliding
need for tag lines such as 21 and 40 in FIGS. 1 and 3
respectively.
link 32 cooperates with the Weight 31 to increase this
angle, the angle reaching a maximum in the highest posi
The constructions shown have been found to be highly
tion of hook 18 and the corresponding lowest position 60 effective to reduce swaying of the load being handled
of weight 31. Since this represents the fully hoisted
by a crane or hoist. The additional apparatus required
position of the suspended material, the dampening force
does not substantially complicate the existing device and
is applied with maximum efficiency during most of the
the cost is very small compared to the cost of the com
travel from the original position to the placement posi
plete unit.
tion. Depending upon working conditions, the rigging 65 I claim:
side of jib 23 may be lengthened to increase the rigging
1. Hoistingapparatus including in combination, a hoist
angle.
boom, a hoist line supported by said hoist boom and
In FIG. 2, a modi?ed form of the rigging of the in
including a load carrying member adapted to support
vention is shown which incorporates a mechanical ad
a load for vertical movement, tag line means connected to
vantage to illustrate another inherent variable for ad 70 said load carrying member, means extending substantially
justing the dampening force. Thus, tag line 28 is length
at right angles to the ‘beam supporting said tag line
means at 1a position spaced from the vertical plane includ
ened and, instead of its working end being secured to
hook 19, it is reeved through a second pulley or block
ing said hoist boom and said hoist line,'said tag line
means including means resisting movement of said load
33 connected to ball 18 and then run upwards to be
at?xed to jib 23 by another book 34 spaced from hook 75 carrying member in a direction transverse to said vertical
3,028,017
plane for various vertical positions of the suspended load,
to thereby dampen swinging motion of the suspended
load.
2. Hoisting apparatus including in combination, a hoist
boom adapted to support a load, hoist line means rigged
dependently from said hoist boom and adapted to verti
cally displace a load secured thereto, beam means secured
6
ture and extending outwardly therefrom and a hoist line
suspended from said hoist boom for lifting a load, said
rigging apparatus including in combination, support
means carried by said hoisting apparatus and extending
to a point in a vertical plane disposed substantially at right
angles to the boom and which plane includes the load,
?rst pulley means suspended from said support means at
said point, a tag line strung around said pulley means,
to said hoist boom and extending substantially perpendicu
a counterweight connected to a portion of said tag line
lar from the plane de?ned by said boom and said hoist line
means, tag line means rigged dependently from said beam 10 extending from one side of said pulley means, second
pulley means coupled to the load, with the portion of
means at a point thereon spaced from said hoist line
said tag line extending from the other side of said ?rst
means, said tag line means being connected to the sus
pulley means being strung around said second pulley
pended load and weight means connected to said tag line
means so that said tag line means exerts a pull on the
means and extending therefrom and being fastened to
load to dampen swinging motion of the load in the di 15 said support means, and a linking member slidably en
compassing said portions of said tag line to link the same
rection of said beam means for all vertical positions of
whereby lateral swinging of the load is dampened by
said tag line regardless of the vertical position of said
from hoisting apparatus having a rotatable base structure
load.
7. Hoisting apparatus for stabilizing and positioning
for angular movement of said hoisting apparatus, an 20
the suspended load.
3. Rigging apparatus for stabilizing a load suspended
elongated hoist boom supported at one end on said base
structure and extending outwardly therefrom, and a hoist
line suspended from said hoist boom for lifting a load,
said rigging apparatus including in combination, support
a load suspended therefrom including in combination, a
base structure, an elongated hoist boom supported at one
end of said base structure and extending outwardly there
from, a hoist line suspended from said hoist boom, hoist
means carried by said hoisting apparatus and extending to 25 ?xture means carried on said line and including swivel
means for supporting the load and means adapted to re
a point in a vertical plane disposed substantially at right
tard rotation of said swivel means, support means car
angles to the :boom and which plane includes the load,
ried by said hoisting apparatus and extending to a point
pulley means suspended from said support means at said
in a vertical plane disposed substantially at right angles
point, a tag line reeved about said pulley means, a
counterweight connected to a ?rst portion of said tag 30 to said hoist boom and which plane includes the load,
pulley means suspended from said support means at said
line extending downwardly from one side of said pulley
point, a tag line reeved about said pulley means, a coun
means, and with the portion of said tag line extending
terweight connected to a ?rst portion of said tag line ex
from the other side of said pulley means being coupled to
tending downwardly from one side of said pulley means,
the load, whereby lateral swinging of the load is damp
ened by said tag line regardless of the vertical position 35 the portion of said tag line extending from the other
side of said pulley means being coupled to the load,
of said load.
4. in a construction crane having a revolving frame
rotatably supported on a carriage and a boom extending
diagonnally upward from said frame with a pulley at its
outer end, the combination of, a hoist line running over
whereby lateral swinging of the load is dampened by said
tag line regardless of the vertical position of said load,
and an adjustable elongated positioning boom supported
at one end on said base structure and connected to said
hoist ?xture means for positioning the load.
8. Hoisting apparatus including in combination, a
therefrom for hoisting a load secured to the lower end
hoist boom, a hoist line supported by said hoist boom
of said hoist line, a horizontal jib a?ixed at right angles
and including a load carrying member adapted to sup
to said boom near said pulley with portions of said jib
extending from each side of said boom, a pulley sus 45 port a load for vertical movement, tag line means includ
ing a pulley and a tag line having portions extending on
pended from one portion of said jib, a tag line reeved in
either side therefrom, means supporting said pulley at a
said pulley and having portions extending downwardly
position spaced from the vertical plane including said
on both sides therefrom, a weight secured to said tag
hoist boom and said hoist line, and weight means secured
line portion extending from one side of said pulley, said
to said portion of said tag line means extending on one
tag line portion extending from the opposite side of said
side of said pulley, said portion of said tag line extending
pulley being coupled to the lower end of said hoist line,
on the other side of said pulley being coupled to said
a weight secured to the other portion of said jib to coun
load carrying member so that said tag line means damp
terbalance said pulley, said tag line and said counter
ens swing'ng motion of the suspended load in a direction
weight, and a linking member affixed to the weighted
end of said tag line and slidably encompassing said por 55 transverse to said vertical plane for all vertical positions
of the suspended load.
tions of said tag line to link the same.
9. Hoisting apparatus including in combination, a hoist
5. Hoisting apparatus including in combination, a hoist
boom, a hoist line supported by said hoist boom and in
boom, a hoist line supported by said hoist boom and
cluding a load carrying member adapted to support a
adapted to support a load for vertical movement, tag line
means including a pulley and a tag line extending on 60 load for vertical movement, tag line means connected to
‘said load carrying member, means supporting said tag
either side therefrom, said tag line means also including
line means at a position, spaced from the vertical plane
frictional means for retarding running movement there
including said hoist boom and said hoist line, said tag
of, means supporting said pulley at a position spaced
line means including spring means resisting movement
from the vertical plane including said hoist boom and said
hoist line, and weight means secured to said tag line ex 65 of said load carrying member in a direction transverse
to said vertical plane for various vertical positions of the
tending on one side of said pulley, said tag line extend
suspended load, to thereby dampen swinging motion of
ing on the other side of said pulley being coupled to the
the suspended load.
suspended load so that said tag line means dampens
swinging motion of the suspended load in a direction
transverse to said vertical plane for all vertical positions 70
References Cited in the ?le of this patent
of the suspended load.
UNITED STATES PATENTS
6. Rigging apparatus for stabilizing a load suspended
2,805,781
Senn _______________ __ Sept. 10, 1957
from hoisting apparatus having a base structure, an elon
gated hoist boom supported at one end on said base struc
said pulley and having a portion extending downwardly
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