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Патент USA US2129394

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Sept- 6, 1938‘-
Filed NOV. 9, 1956
Patented Sept. 6, 1938
I I Thomas F. Allen, Watsonville, Calif.
Application November 9, 1936, Serial No. 109,884
1 Claim.
(Cl. 214—1.1)
The present invention relates to improvements
in basket-tipping apparatus.
In my co-pending application entitled “Har
vesting apparatus”, Ser. No. 77,711, ?led May 4,
Gr 1936, I have disclosed, in connection with appara
tus for handling lettuce and like vegetables, a sys
tem which includes the use of large baskets for
transporting lettuce from the ?eld to trimming
and packing sheds.
The system also includes
mechanism for tipping these baskets after they
have been removed from the truck‘ which trans
ports them so that their contents are readily ac
cessible to workers at the trimmers’ benches.
The preferred form of this basket-tipping ap
paratus comprises an overhead hoist, either hy
draulic 'or pneumatic, connected with a pivoted
frame in which the basket is placed to be swung
or tipped by the hoist under control of the worker
at the trimmers’ bench. Experience in the actual
installation of such systems has proven that in
some cases the vertical clearance in a packing
shed is insu?icient to accommodate a hoist posi
tioned above the basket-tipping frame and still
allow space with the vertical movement necessary
CR to tip the frame and basket the required distance.
It is, therefore, the object of the present inven—
tion to provide an improved basket-tipping ap
paratus in which the space required for hoisting
mechanism is minimized.
Another object of the invention is to provide a
compact hoisting mechanism for basket-tipping
apparatus and the like through simple and inex
pensive means without sacri?cing the advantage
of a good leverage in the connection between the
hoist. itself, and the basket-tipping mechanism.
Other objects and advantages will be made ap
parent in the following speci?cation, wherein ref
erence is made to the accompanying drawing il
lustrating one form of the invention.
In the drawing—
Fig. 1 is an end elevation of a basket-tipping
apparatus embodying my invention;
with the bar l2 so that a basket I! carried be
tween the frames H is moved to a position where
its contents are readily accessible to workers who
stand before the bench Hi, this position of the
basket being illustrated in dotted-lines in Fig. 1.
The hoist, which may be of any conventional
design, comprises a cylinder l5 containing a re
ciprocable piston (not shown).
A three-way
valve l6 controls the ?ow of fluid, preferably air
under pressure, to and from the lower end of the 10
cylinder. This valve has a._connection I‘! lead
ing to a source of supply of compressed air and
is connected by a conduit ill with the lower end
of the hoist cylinder l5. The valve also includes
an exhaust port l9 and a control lever 20 is op
erable to manipulate the valve so that the com
pressed air will be directed into the cylinder or
will be permitted to escape from the cylinder,
through the exhaust port l9. Cords 2| and 22
are connected with opposite ends of the valve
control lever 20 with their ends hanging in a posi
tion where ‘they may be conveniently grasped by
a worker standing at the bench Ill to control the
valve. The piston within the cylinder 15 is con
nected by a "piston rod 25 with the center of a
rigid spreader 26 (see Fig. 2) , which in the pres
ent instance is illustrated as a channel-shaped
metal bar. Cables 27 are secured to and depend
from opposite ends of the spreader 26, and are
connected one with each of the frames H at the
points 28. The cables 26 are guided to their points
of connection 28 by a pair of arcuate guides 30,
which guides are channel-shaped in cross section
to receive the cables and which are secured to
the sides of the frames l l so that their upper ends
‘ terminate an appreciable distance from the cen
ter of pivotal movement of the frames or the bar
l2. The distance between the bar l2 and the up
per ends of the arcuate guides 30 determines the
leverage obtained in tipping the frame and basket
by upward movement of the piston in the hoist. -
Owing to the channel-shaped construction of
Fig. 2 is a side elevation of the apparatus illus- . the guides and the fact that the cables lie freely
trated in Fig. l; and
Fig. 3 is a perspective view of one end of the
Referring to the drawing in detail, the basket
tipping apparatus is shown as positioned adjacent
a trimmer’s bench Ill. It comprises a pair of end
frames, shown generally at I I, supported for piv
otal movement about a horizontally disposed bar
l2 carried by framework 13 rigidly supported rel
ative to the ?oor.
An overhead hoist is connected with the frames
I I to raise them about their pivotal connection
within the guides, tipping movement of the frame
causes the cables gradually to leave the guides
so that the point of contact of the cables with
the guides approaches the point 28 at the bot
tom of the load, where the cables are permanent
ly attached. Owing to this construction the ver
tical movement of the hoist necessary to move
the basket from the full-line position illustrated
in Fig. 1 to the dotted-line position there shown,
or' farther, is considerably less than it would be
if the cables were directly connected to any single
point having an equal advantage of leverage.
The frames II are shown as comprising a pair
A basket-tipping apparatus constructed in the
manner.,described above will operate efficiently
of horizontal members 32 connected and braced ‘Y with-amel‘atively small overhead clearance and
by diagonally disposed members 33, but any suit
makes possible the installation of overhead hoists
able construction, which is- preferably rigid and in sheds where it is otherwise necessary to cut
light, may be employed, it being understood that away or raise a portion ‘of the roof, or install a
the frames may be varied in-size and shape to ac
horizontally disposed hoisting mechanism be
commodate different types of baskets. These two neath the floor, involving more complicated and
, side frames II are connected to each other as 11
lustrated in Fig. 2 by means of transversally ex
10 tending members 34 and 35, preferably of chan
nel-shaped construction for the sake of adding to
the rigidity of the frame-work.
Other brace
costly apparatus.
The invention has a wide variety of uses in har
vesting and handling various kinds of fruits and
vegetables. ‘It has proven of value in connection
with harvesting melons, which may be placed in
members, as indicated at 36 and 31, may extend the large baskets as they are picked in the field,
between the transverse members 34 and 35, and the baskets thereafter being tipped as above de
15 further bracing of any desired type may be used scribed to facilitate the removal of the melons
where the size and-weight of the baskets to be therefrom one by one for sorting and grading.
tipped make it advisable. The baskets are usual
Likewise, carrots and other vegetables which grow
ly provided with casters as indicated in dotted in the ground and must be washed after harvest
lines at 38 to facilitate transporting them over ing can be expeditiously handled through the use
of such large baskets and tipping mechanism.
20 the surface of the floor and in order to permit
these casters to roll over the transverse member
_While I have illustrated and described a pre
35. This member is preferably formed with down
ferred form of my invention, it is to be under
wardly offset portions 39 which may be received stood that various changes may be resorted to in
in depressions formed in the floor so that their the construction and arrangement of its several 25
upper surfaces are flush with the floor to permit parts within the scope of the appended claim.
the casters to roll freely over them as the baskets
Having thus described my invention, what I
are moved into and out of the frame.
claim and desire to secure by Letters Patent is
The arcuate guides 30 are secured to the sides
A basket-tipping apparatus for use in packing
of the frames II and may be constructed as il
sheds and the like which comprises in combina 30
lustrated in Figure 3 wherein a ?at arcuate plate tion a frame formed of end members rigidly con
40 is spaced from the frame I l by means of an ar
nected by bottom members and front members
cuate bar 4| to provide an intermediate chan
and having an open back to permit rolling of
nel for reception of the cable 21 as shown. If de
baskets into the frame, a pivotal support for
sired, each of the side frames ll may be con
said frame adjacent the top forward edge there 35
of two solid plates in place of the solid of, flexible cables connected with said end mem
as structed
construction shown with plates being spaced to bers adjacent the lower forward corners thereof,
receive the cable between them.
channel-shaped‘ arcuate guideways secured at
These guides, as illustrated, are formed on an both ends to said end members forming diagonal
arc struck from the center of pivotal movement braces for the end members and leading said ca 40
of" the, basket and therefore the leverage ob
bles toward the upper rear corners thereof, where
tained remains constant while the basket-is being by the frame may be swung about its pivotal sup
raised, and the lifting force of the hoist is con
port by an upward pull on said cables.
?ned to a straight vertical line at all times. How
ever, the necessary vertical movement of the hoist
may be even further reduced by varying the shape
45' and position of the arcuate guides 30.
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