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Патент USA US2405312

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Àug. 6, 1.946.
o.v G. MANDT
' '2,405,332
Filed June 3, 1944
5 Sheets-Shed. 1
Aug» 6, 19456
o. G. Mmm
` 2,405,312
Filed June 3, 1944
5 Sheets-Sheet 2
6, 1946.
2,405,312 >
Filed June 5, 1944
5 Sheets-Sheet 5
Aug. 6, 1946. y,
o. G. MANDT ,
2,405,312 '
Filed June 3, 1944 '
5 Sheets-Sheet 4 _
Aug. e, 1946.
» o, @_ MANDT
Filed June s, 1944
5 sheets-sheet' 5
Patented An., _194
oben a.
an, Upper ln- 1
-- '
l»01110, assigner
t@ 'rae .neger Machine om any comme
0h10, acci-poration of 0h10
application rune s, im, seri-a1 No. saam
261e. (ci. 214-112)
This invention relates to loading machines,
having particular referenceto a loading machinef
"of the type employing a portable engine-pro
pelled base upon which is mounted an upstand
partly‘inelevation, disclosing thehdrive mecha
nism for rotating the -turnab1e'mest;
through` the mast and disclosing its rotating-
ing mast, and wherein use is made of power
actuated cables, trained over or along the mast,
for effecting the raising and lowering of an asso
ciated material-handlingloader.
pair of forwardly located, motor driven, traction
Loading machines of this category are used
quite widely in operations requiring the transfer
of materials, 'such as sand, gravel, ores, coal,
Fis’. 5 is a horizontal ‘sectional view taken
My improved loading machine may be con
structed to embody a portable base et, having a
wheels 3i and a vsingle.~ rearwardly disposed-l
ground-engaging steering wheel et. Carried by
the base or frame tt at its rear end is an intel
combustion engine, or other power plant et, hav- À.
boxes or the like, from, for example, positions of
ing the usual clutch and change-speed transmisdeposit on the ground to relatively elevated posi
sion 6d.
tions of discharge suitable for their deposit on
the bodies of automotive truck vehicles, rail car 15 At the front of this machine, there is pro
vided, a material-receiving 'scoop or bucket te, the
or the like.
latter being provided at-the rear‘thereof with a
One of the objects of the invention is to provide
bracket 68 to which is pivotally united as at di a
an improved loading machine of this character
pair of carrier arms et. These arms conform to
wherein the mast is mounted on the; portable
base for turning movement about a substantially 20 the curvature of the rear wall t8 oi’ the scoop or
bucket 65, so that when the ,latter occupies its
vertically disposed anis, so that the associated
lowered position, as .illustrated in Fig. d of the
scoop or other load-handling element, when in
drawings, forward4 advance of the machine 4to
its elevated position, may turn in unison with
effect penetration ofthe scoop or bucket into the
the mast, in order that materials carried thereby
may be discharged advantageously laterally to 25 pile of material to be gathered, will produce
thrusts which will be transmitted to the arms.
either side of the machine following predeter
' These arms in turn engage >the thrust-receiving
mined lifting thereof to an elevated plane above
rollers 'it carried by a bracket 'il depending sta
the ground or other base surface.
tionarily from the frame of the base tt.
It is another object of the invention to provide 30 Also, carried by the arms tt are pivoted latch
a loading machine for the uses indicated char
detents 12, the hook-shaped outer ends of which
acterized by the simplicity of its mechanical con
are adapted for engagement with keepers‘lt sta
struction, the ease by which its operation may
tionarily fastened to the upper portions oi' the
be governed, and its'sturdy features of design
rear walls t9 of the scoop or bucket. While the
by which the same is well adapted for hard 35 de_tents are in engagement with the keeper it,
usage and extended service.
the bottom of the-scoop or bucket is maintained
For a further understanding of the invention,
in a substantially horizontal plane, as it is when
reference is to be had to the following description
penetrating the material to be lifted or during
and the accompanying drawings, wherein:
the elevation of the material to a position of dis
Fis. 1 is a side elevational view of a loading 40 charge. When the bucketor scoop has been ele
machine formed in accordance with the lpresent
vated to such a discharge position, as shown by
invention, the material-handling scoop of the
dotted lines in Fig. 4, the detents are rocked
machine being shown in full lines in its lowered
about their pivotal mounting on the arms te, by
position and in broken lines in its elevated posi
any suitable manual control, s_o that the scoop
tion of discharge;
45 or bucket may tilt about its pivotal connection
Fig. 2 is a top plan view of the loading ma
l with the arm tt to effect gravitational dis
chine, illustrating in full lines the position of
charge of the materials contained therein.
the scoop during loading thereof, and in broken ’
The upper ends of the arms te terminate in
lines, the discharge positions which the scoop
laterally directed :portions ld, which carry rollers ,
may assume in delivering materials handled 50 ‘it arranged for vertical movement in a pair oi?
thereby to kkassociated carriers;
relatively spaced upstanding channel members-
le. Joined with these members are rearwardly
converging struts l1, the latter having their inner
ing machine, disclosing the scoop in dotted lines
ends secured to vertically registering collars it,
in various material-discharging positions;
Fig. 4 is a vertical transverse sectional view, 55 whichl are fastened to the upper and lower en
Fig. 3 is a front elevational view of the load
' or a rotatable tubular column i9. This Column
to one side or theother of the center line of the
at its upper end is mounted for rotation within
a bearing 90 provided in a frame-carried bracket
Conveniently the operation of the clutches 98
Si and at its lower. end is connected with a wheel
82 formed perlpherally with~gear teeth 83 and
and 91 may be governed by the provision of a
sliding clutch actuating shaft §08, which is slid
ably supported in bearings i 09 carried by the base
mounted for rotation on the base frame S0.
Also mounted on the frame 90 is a drum or
frame 99. The shaft |08 may be shifted by means
of a manually operated lever H0, which is _ful
windlass 80 to which is- fastened one end of a
scoop raising and lowering cable 85. From the
crumed as at ||| on the frame 90. The lever has
pivoted thereto one end of a link | i 2, the opposite
end of said link being connected with a. shifter
bracket | i3, which is fixed to the clutch shaft |08.
. drum 39, the cable 85 is trained over a frame-
mounted guide 9S, the cable then passing up
wardly through the interior of the column 19, and
is trained over a sheave 8l rotatably carried at
The bracket H3 includes a depending yoke H9,
the top of the channel members 10 of the mast.
From the sheave 31, the cable 95 is trained down
wardly and passes over a second sheave 88 carried
by the outer ends of a pair of extensions 99 pro
kthe lower portion of which is received within an
annular groove ||5 provided in a collar H3.
loosely mounted on the worm shaft 92.
vided on the carrier arms 68. From the sheave
clutchshaft |08 and engages with a collar H8
slidably mounted on the shaft 92 and adapted
for engagement with the clutch 99. Each of the
clutches 96 and 91 is provided with a pressure
A similar shifter yoke H1 is carried by the
90, the cable extends upwardly and is fastened
to or dead-ended on a link 90 which is pivotally
»carried by the shaft supporting the upper sheave
The drum or windlass 89 is driven in any
plate H9, which engages pivoted pressure pawls
|20 ofthe clutches 96 and 91. The collars | I6 and
suitable manner by power derived from the engine
63, and consideration will disclose that when the
drum is rotated in va direction t0 shorten the
effective length of the cable, the carrier frame
_ ||8 are formed with tapered ends which enter
openings provided in pressure-applying disks |2|
.of said clutches. By these means, the worm
shaft may be rotated in a direction to obtain the
' arms will be elevated and caused to move verti
cally in a guided manner between and by the
channel members 16 carrying with them the scoop
or bucket-65 and the materials loaded within the
latter. When the scoop or bucket reaches its de
sired position of elevation' as, for example, to
permit of the discharge of Í its contents into the
body of a truck or other carrier, as shown, in
dotted lines in Fig. 6, the detents 12 are rocked .
to remove the same from latching engagement
with the keeper 13.
desired rotation of the mast or boom assembly
about its vertical axis.
To prevent the mast or boom from being
rotated about its vertical axis until the bucket or
scoop has been suñiciently elevated` so that it
will assume a horizontal plane above the frame
Since the scoop or bucket is pivoted to the arms .
68 in an off-center position, the lifting of the de
tents will cause said scoop or bucket to partially 40
rotate about its pivotal connection 61 with the
arms 88, thus enabling the bottom of the scoop
mounted elements of the machine, the clutch
shaft |08 is provided with a ñxed socket member
|22, lwith which is engaged the-lower headed end
|23 of a vertically extending- link |24. The upper
end of this link is pivotally connected as at |25
to an arm |28.
This arm is pivoted as at |21 on
the frame of the machine and has its outer bi
furcated end slotted to receive pins |29 projecting
from a ring |29, the- latter being received Within
an annular groove provided in a vertically shift- '
or bucket to assume an angular position pro
viding for the gravitational discharge of _ the
able collar |30, which is mounted on the tubular
materials handled thereby, in order that such 45 column 19. The collar |30 is formed witna '
second annular groove in which is positioned a.
materials may be deposited within the bodies of
second‘ring | 3|, the latter being provided with
associated carrier vehicles.
pins |32 which are receivable inl slots provided
To turn the mast or boom about the vertical
axis pf the column 19, the gear teeth y83 of the 50 in the outer bifurcated end of a lever |33. This
lever is pivoted as at |34 .intermediately of its
wheel 82 mesh with a worm 9|, which is fixed on
length on a bracket |35 carried by the channel
a cross shaft 92, the latter having its ends jour
members 16. The inner end of the lever |33 is
naled in frame carried bearings 93. Loosely
mounted on the shaft 92 at .one end is a gear 94,
and likewise loosely mounted on the shaft 92 at
its other-end is a sprocket 95. Joined with the
gear 94 and the sprocket 95 are disk clutches 96
and 91, respectively, half of the disks of each
clutch being fixed for rotation with the shaft 92
slotted to receive a pin |36 formed on a pivoted
detent |31, also carried by the bracket |35. The
55 inner end of the detent |31 is provided with a
1 semicircular socket |39 which is adapted for en
gagement with. a cross axle |40 on which the
are carried.
A coil spring |4| is
fastened at one end as at |42 to the detent |31,
60 the other end of the coil spring being secured as
tion with the housings of the clutches 96 and 91.
at |43 to the bracket |35, the spring being dis
The gear 94 is disposed in mesh with a comple
posed in an off center relation with respect to the'
rollers 15
and the remaining alternate disks fixed for rota- ‘
mental gear 98 fixed for rotation on a counter
detent in order to positively maintain the latter
shaft 99, the latter being suitably driven lin one
in one position or the other of its pivotal move
direction by power derived from the engine v63. 85
Also fixed` for rotation 'on the shaft 99 is a
It will be seen that when the scoop or bucket
sprocket |00, around which >passes an endless
85 is elevated, the cross axle |40 will enter the
chain |0|. By this arrangement, it will be seen
socketed end of the` detent |31, rocking the de
that the shaft 99 serves tc rotate the gear 94 in
tent 'about its pivot and causing the elevation of
one direction and the sprocket 95 in the opposite 70 the collar |30 and the lifting of the link |24 so
direction. Therefore, by selectively actuating the
that its headedend will be removed from engage
clutches 95 and 91, the cross shaft 92 may be
ment with the socket member |42, thus permit
rotated in a direction to produce the desired rota
ting the clutch shaft |08 to be manually actuated
tion of the wheel 82 and the column 19 of the
to control the direction of rotation of the Iworm
mast, so that the bucket or shovel will be swung 75 shaft 92. When the scoop or bucket is lowered,
for materials to be loaded connected with said
carrier frame, normally locked clutch controlled
power-driven means for imparting turning move
the reverse of this operation takes place, and the
link |24 is lowered to assume the full line position
disclosed in Fig. 7.
ment to said mast structure in either direction
from a centered position, a'n independently con
trolled. power-driven drum on said base, cable
In View of the foregoing, it will be seen that
the present invention provides an improved load
ing machine for use in _many industrial capaci
ties where buik materials of various kinds are
required to be elevated or transferred from one
location to another. A particular advantage'
which my improved machine possesses over prior
machines for similar purposes resides in con
structing the mast or boom so that, in addition
to supporting the associated shovel, scoop or
material receiver for elevation in a vertical direc
tion, it may be revolved about a substantially
vertical axis to locate the receiver laterally of
the machine when material is to be .discharged
therefrom. This feature provides for greater
means connected >with said drum and passing
through said column and over said mast struc
ture for association with said carrier frame to
impart controlled raising and lowering move-~
ment thereto, and means operative automatically
following predetermined elevation of said carrier
frame on said mast structure to unlock the mast
turning means, thereby rendering the same oper
ative to impart controlled turning movement to
the mast structure.
2. Portable load-handling mechanism compris
ing a base, a mast structure arising from said
facility in the operation of the machine and re
base, bearings carried by said hase with which
duces the maneuvering of the portable base, as 20 said mast structure is joined for turning move
is usually necessary in locating the receiver with
ment about a substantially vertical axis, a load
respect to associated vehicles or in other posi
receiver, a carrier member for said receiver asso
tions of discharge. The power-driven turning
ciated with said mast structure for guided ver
mechanism for the mast or boom is so controlled
tical movement with respect thereto, a cable
that it is locked against horizontal swinging 25 drum mounted on said base, normally locked
movement when the receiver is in its lowered
reversible power-driven means on said base for
position, where if swung laterally, it might strike
imparting turning movement to said mast struc
or injure stationary elements on the portable
ture, carrier frame and load receiver in either
self-propelled base, thus protecting the machine
direction from a central position, independently
against improper operation., My improved ma 30 controllable power-driven means on said base
chine is further characterized by its mechanical
for rotating said drum, a cable connected at one
simplicity and its ability to receive and handle
end with said drum and' having intermediate
heavy loads expeditiously and with complete
portions thereof trained over said mast structure
control thereover.
for raising and lowering engagement with said
I claim:
35 carrier member, and means operative automati
1. Portable load-handling mechanism compris
cally following predetermined elevation of said
ing a base, a tubular column arising from said
' carrier members to release said reversible power
base, a vertical mast structure joined with said
driven means to -admit o'f turning movement of
column for turning movement about the vertical
said mast structure.
‘ axis thereof, a carrier frame mounted for vertical 40
guided travel on said mast structure, a receiver
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