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Патент USA US3078826

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Feb. 26, 1963
B. POLL
3,078,816
POT PLANTER
Filed May 2, 1960
2 Sheets-Sheet 1
INVENTOR
BENJAMIN POLL
BY
, ATTORNEYS
Feb. 26, 1963
BBBB LL
3,078,816
BEA/MA M/A/
INVENTOR
POZL
,QMW
ATTORNEYJ’
United States Patent 0
1
3,078,816
Patented Feb. 25, 1963
1
2
3,678,816
Benjamin Poll, Holland, Mich” assignor to Holland
Transplanter (Company, Holland, Mich, a corporation
the new and improved adjustable furrowuclosing means,
comprising a part of this invention.
Brie?y, this invention relates to a planting machine for
planting potted plants, including a conveying means with
P01‘ PLANTER
of Michigan
I
Filed May 2, i960, Ser. No. 26,1o9
19 Claims. (Cl. 111-2)
a circuitous movement and a plurality of pot grasping
arms mounted each at one end in spaced relation to the
conveying means. Each of the arms is comprised of a
base extending normal to the direction of movement of
This invention relates to a planting machine. More
the conveying means, a supporting prong extending from
particularly, this invention relates to a planting machine 10 the free end of the base and a pair of detachable ?exible
for planting potted plants, having carrying arms for grasp
prongs extending from the base, the ?exible prongs lying
ing and depositing a potted plant, the carrying arms being
generally parallel to each other and to the supporting
easily converted for planting pots of varymg sizes. The
prong. A pair of wheels is positioned rearwardly of this
machine of this invention is of the general type disclosed
conveying means, the wheels spaced from one another for
in my Patent No. 2,739,548 issued March 26, 1956.
15 covering the potted plants with a ridge of dirt formed be
It has been found advantageous to place plants in the
tween the wheels. Means is provided for adjusting and
ground together with a pot in which they have been
changing the distance separating these Wheels to corre
planted. By placing both the plant and its pot in the
ground, the grower is assured that the roots Wlll not be
spond with the size of the pots being planted.
Reference numeral 1 (FIG. 1) designates the pot grasp
damaged and proper fertilizer and growing agents sur 20 ing arm comprising this invention. Such an arm is
round these roots. Machines are already in existence, as
adapted to be used in a planting machine as described in
described in my above mentioned patent, having a plu
my Patent No. 2,739,548 issued March 27, 1956. In that
rality of arms which grasp all plants at a loading station
patent, such a machine is disclosed in detail and it is be
and carry them to a planting position where they are re
lieved unnecessary to now describe this machine which
leased from the control of the machine. However, ma 25 is well known to the planting art. Such a machine in
chines presently in existence are not adapted to grasp a
cludes suitable ground-working equipment which operates
potted plant and convey it to planting position. The
to open a furrow in the ground ahead of the position
carrying arms of these machines are adapted to grasp only
where the plants are placed. A conveying means having
roots of plants and will not hold and carry pots. Further,
a circuitous movement is positioned on the machine rear
carrying arms presently in existence operate in such a 30 wardly of this ground-working equipment, a plurality of
manner that the pots would be crushed and improperly
arms secured at one of their ends to the conveying means.
placed in the ground. Still further, since plants of vary
As these arms move past a loading station, plants are de
ing size require pots of varying size, carrying arms pres
posited thereon. A pair of cam plates close the arms as
ently in existence cannot facilitate the handling of pots of
they move downwardly so that the plant is held therein,
varying sizes.
35 the plant being released into the furrow when the arm
It is therefore an object of this invention to provide a
emerges from between the cam plates. This ground
carrying arm for a planting machine which is adapted to
working equipment also includes a furrow-closing device
place potted plants in the ground.
which closes the furrow around the plant to provide the
Another object of this invention is to provide such a
necessary support after it is released by the machine.
carrying arm which will not damage the pots to be placed
This plant grasping and conveying system, together with
in the ground.
the ground~working apparatus, is mounted on a frame
Another object of this invention is to provide such a
provided with wheels so that the machine may be drawn
carrying arm which maintains a ?rm grip on the pot until
by a tractor or some other vehicle. The arm 1 includes
it is deposited in the ground, without harming the pot.
a base 2, shown as being channel-shaped in cross‘ section.
Another object of this invention is to provide such a 45 A plurality of openings 3 are provided at one end of the
carrying arm which may be readily adapted for facilitat
base 2 so that the base may be rigidly at?xed to the con
ing the handling of pots of varying sizes.
veying means having a circuitous movement. When
Another object of this invention is to provide such a
mounted, the base 2 extends normal to the direction of
carrying arm which utilizes an improved opening and
movement of the conveying means. Portions of the ma
closing action in the deposition of pots into the "round.
Another object of this invention is to provide in a
planting machine a new and improved means for cover
ing the potted plants placed in the ground, this covering
50 terial forming the side walls of its channel-shaped cross
section are formed to provide bearing members 4, 5, 6
and ‘7 (FIGS. 1 and 4). The set of bearings d and 6 are
coaxial, as are the set 5 and 7, and cooperate with the
side walls 8 and 9 of the bottom plate ill to receive the
clamping members 15 and 16 as shown, the plate 10 being
means adapted to properly cover pots of varying sizes.
A still further object of this invention is to provide such
a planting machine and carrying arm which is simple in
construction and inexpensive to fabricate and maintain.
These and other objects of this invention will become
obvious to those skilled in the planting art upon reading
the following speci?cation in conjunction with the ac
clamping members are preferably bent from rod material,
and include portions 17 and 18 respectively which are
spaced from each other and from the base 2. It will be
noted that the portions 17 and 18 of the clamping mem
companying drawings, wherein:
bers 15 and 16 are adapted to move towards and away
secured to the base 2 by means of nut and bolt ll. These
from each other as the clamping members rotate in the
FIG. 1 is an enlarged, side perspective view of the pot
bearings 4, 5, 6 and 7.
carrying arm of this invention, one of the guard shields
As shown best in FIG. 2, a generally V-shaped spring
being broken away to better show the arm;
FIG. 2 is an exploded View of the parts of the pot grasp 65 25 is secured to the base 2 for biasing the clamping mem
bers l5 and 16 away from each other. The base 2 is
ing portion of the arm shown in FIG. 1;
seated within the vertex of the spring 25, the legs 26 and
FIG. 3 is an enlarged perspective view of a ?exible
prong adapted to grasp larger pots;
27 thereof extending between and resting against the por
FIG. 4 is an enlarged, front view showing the manner 70 tions 17 and 18 of clamping members 15 and 16 respec
tively. A supporting prong 30 is positioned to lie with
in which the arm in FIG. 1 grasps a pot; and
in the channel-shaped base 2, and extends from the end
FIG. 5 is a rear view of the planting machine, showing
thereof. A bolt 31 extends through the vertex of the
3,078,816
spring 25, through the bottom of the base 2, through
the supporting prong 30 and a nut 32 affixes these ele
ments in position.
To give the supporting prong 30
added support, ears 33 are struck from the base 2. ex
tending across the supporting prong 30. It will be noted
that the spring 25 is secured to the base 2 and held un
der tension between the clamping‘rnem-bers 15 and 16,
4
operator substitutes larger ?exible prongs, he may also
adjust the spacing between the wheels 60 and 61.
Operation
As described in my Patent No. 2,739,548 issued March
27, 1956, a plurality of arms 1 move in a circuitous fash
ion along a furrow dug by the planting machine. The
operator places a pot P (shown in FIG. 1) on the sup
porting prong 30 between the ?exible prongs 50 and 51.
The foliage of the plant A in the pot P rests between
clamping members 15 and 16 bear against the sides of 10 the guard shields 44 and 45. With the pot thus placed
biasing them outwardly. As will be seen from FIG. 4,
downwardly extending extensions 19 and 20 of the
the base 2 as the clam-ping members move apart, limit
ing such movement.
_
,
Roller followers 41} and 41 are rotatably positioned on
the portions 17 and 18 of the clamping members 15 and
16 respectively. The roller followers 40 and 41 are held
in position for rotation by means of respective pairs of
bushings 42 and 43.
Guard shields 44 and 45 are se
on the arm 1, the arm moves downwardly toward the
furrow and engages a pair of cam plates 70 and 71
(FIGS. 4 and 5) as described in my Patent No. 2,739,
548. The roller followers 40 and 41 engage the plates
79 and 71, biasing the clamping members 15 and 16 to
ward each other, the roller followers creating very little
friction. As the clamping members close, the ?exible
prongs 50 and 51 exert pressure on the sides of the pot
cured to the clamping members 15 and 16 and the legs
26 and 27 of the spring 25, closing the area between the
P. However, these prongs ?ex in a manner such that
portions 17 and 18 of clamping members 15 and 16 and 20 the pot is not crushed, although a ?rm grip is maintained
the base 2. The purpose of these guard shields will be
thereon. It will now be noted that the pot P will be
more fully explained hereinafter.
?rmly held along three of its sides, assuring a positive
A pair of ?exible prongs 50 and 51 are detachably
grip thereon. When each arm emerges from between
secured to the free ends of the portions 17 and 18 of the
the plates 70 and 71, the spring 25 quickly forces the
25
clamping members 15 and 16. Each ?exible prong in
clamping ‘members 15 and 16 to maximum open posi
cludes an elongated ?exible member 52 having an open
tion. At this time, the pot P is completely released and
ing 53 in one end thereof. The ends of the portions 17
deposited in the furrow. As successive arms move
and 18 of clamping members 15 and 16 are slidably re
through the shields, successive pots are planted in the fur
ceived by the openings 53. The elongated ?exible mem
row, the furrow being covered by the wheels 60 and 61
30
ber 52 is then bent toward the end of its associated por
forming a ridge of dirt R about the pot.
tion 17 or 18, bearing against the end of its associated
It will now be understood that a carrying arm has been
portion and lying generally perpendicular thereto. A
clamping member 54 envelops the end of the respective
provided which facilitates the planting of potted plants
with machines of the character described. The structure
of the planting arm is such that the pots are grasped
35
member 54 is thus positioned while the ?exible member
in a ?rm three point grip. However, two of the prongs
52 is under considerable tension, this tension holding
grasping the pot are ?exible so that the pot is not dam
portion and elongated ?exible member. The clamping
the clamping member in position. The ?exible member
being thus held under tension causes the edges of the
openings 53 to bind against the associated portion it en
velops. The ?exible member is thus prevented from
moving with respect to its associated portion due to the
aged. The prongs are easily and quickly detached from
the arm, making it possible to substitute prongs adapted
to receive larger pots. Further, the covering wheels
of the machine are quickly and simply adjustable so that
a proper ridge of dirt may be placed about pots of varying
sizes. A spring means has been provided which effects
the divergent movement of the ?exible prongs very
great friction arising when one is moved with respect to
the other. To assure that the clamping member 54 will
not be jarred loose during use of the arm, a collar 55
quickly and simply. The foliage of the plant is not dam
is positioned on the end of the associated portion of 45 aged, being protected by the guard shields. Practically
each clamping member.
no friction results from the passage of this arm through
As will be more fully explained hereinafter, in order
the shields due to the roller followers provided on each
to facilitate the use of pots of varying sizes, varying sizes
clamping member.
of ?exible prongs must be utilized. FIG. 3 shows a ?exi
While only one embodiment of this invention has been
ble prong 51a having a bend 51b therein. When a pair 50
shown and described, it may be possible to practice the
of ?exible prongs of this con?guration are used, larger
invention through the use of certain other embodiments.
pots may be grasped by the arm 1. In order to replace
These other embodiments are to be included within the
the ?exible prong 51, one merely removes the collar 55,
spirit and scope of this invention as de?ned by the fol
presses the ?exible member 52 against the portions 17
lowing claims.
55
of the ‘clamping member 15 which allows the clamping
I claim:
member 54» to be removed. The ?exible member 52, no
l. A pot grasping arm for planting potted plants for
longer being under tension, may then be simply removed
use in a planting machine having conveying means with a
since the edges of the opening 53 no longer engage the
circuitous movement and a plurality of such arms
portion 17. The larger ?exible prong 51a may then be
detachably secured to the portion ‘17 as described herein 60 mounted each at one end in spaced relation on the convey
ing means, said pot grasping arm comprising: a base;
before.
,
means for securing one end of said base to said conveying
In this regard, as will be noted from FIG. 5, wheels 60
means; a supporting prong extending from the other end
and‘61 are provided to close the furrow around the pots
of said base; a pair of arms each having free end portions
which have been planted to provide the necessary rigidity
of substantially greater ?exibility than the remaining part
65
and support thereto. The wheels 60 and 61 are mounted
of said arm forming ?exible prong portions extending
rearwardly of the conveying means‘ C on a pair of rigid
from said base, said ?exible prong portions lying generally.
shafts 6'2and 63 and include respective hubs 64 and 65.
parallel to each other and to said supporting prong and
The wheels are adapted to rotate about the hubs 64 and
spaced therefrom; and means for engaging said remaining
65. _Set screws 66 and 67 detachably secure the hubs
parts for moving said remaining parts and for effecting
64 and 65 to the shafts 62 and 63. It will be noted 70
movement of said ?exible prong portions toward each
that this allows the operator to quickly and simply adjust
other whereby said supporting prong and said ?exible
the spacing between the wheels 60 and 61. When planting
prongs form a three point grip on a pot.
pots of a small size, the wheels must be relativelyclose
2. A pot grasping arm for planting potted plants for
together. However, when‘ planting, pots of a‘ larger
size, the wheels must be spaced further apart. When the 75 use in a planting machine having conveying means with a
3,078,816
5
6
circuitous movement and a plurality of such arms
mounted each at one end in spaced relation on the con
parallel to each other and to said supporting prong and
spaced therefrom; a generally V-shaped spring, the vertex
of said spring positioned around said base and the legs of
veying means, said pot grasping arm comprising: a base;
means for securing one end of said base to said conveying
means; a supporting prong extending from the other end
of said base; a pair of rods secured to said base having
portions thereof lying in spaced relation to each other
and to said base and spaced therefrom; a ?exible prong
having substantially greater ?exibility than said pair of
said spring extending between the remaining parts of said
arms and biasing said ?exible prongs apart; means for
limiting the parting of said ?exible prongs; and means for
engaging said remaining parts for moving said remaining
parts and e?ecting movement of said ?exible prongs to
ward each other whereby said supporting prong and said
rods secured to an end of said portion of each of said rods, 10 ?exible prongs form a three point grip on a pot.
said ?exible prongs lying in spaced, generally parallel rela
6. A pot grasping arm for planting potted plants for
tion to each other and said supporting prong and spaced
use in a planting machine having conveying means with
therefrom; and means for moving said rods toward each
a circuitous movement and a plurality of such arms
other for e?ecting movement of said ?exible prongs
mounted each at one end in spaced relation on the con
toward each other whereby said supporting prong and 15 veying means, said pot grasping arm comprising: a base;
said ?exible prongs form a three point grip on a pot.
means for securing one end of said base to said conveying
3. A pot grasping arm for planting potted plants for use
means; a supporting prong extending from the other end
in a planting machine having conveying means with a
of said base; a pair of rods secured to said base having
circuitous movement and a plurality of such arms
portions thereof lying in spaced relation to each other
mounted each at one end in spaced relation on the con 20 and to said base and spaced therefrom; a ?exible prong
veying means, said pot grasping arm comprising: a base;
having substantially greater ?exibility than said pair of
means for securing one end of said base to said conveying
rods secured to an end of said portion of each of said
means; a supporting prong extending from the other end
rods, said ?exible prongs lying in spaced, generally paral
of said base; a pair of rods secured to said base having
lel relation to each other and said supporting prong and
portions thereof lying in spaced relation to each other and 25 spaced therefrom; a generally V-shaped spring, the vertex
to said base; a ?exible prong detachably secured to an end
of said spring positioned around said base and the legs of
of said portion of each of said rods, said ?exible prongs
said spring extending between said portions of said rods
lying in spaced, generally parallel relation to each other
and biasing said portions apart; means for limiting the
and said supporting prong; each detachable ?exible prong
parting of said portions of said rods; and means for
including an elongated ?exible member having an opening
moving said rods toward each other for effecting move
in one end slidably receiving said portion of its associated
ment of said ?exible prongs toward each other whereby
rod and a clamping member slidably enveloping said end
said supporting prong and said ?exible prongs form a
of said portion and said ?exible member, said ?exible
three point grip on a pot.
member forceably bent toward and held against said asso
7. A pot ‘grasping arm for planting potted plants for
ciated rod, frictionally binding the edges of said opening 35 use in a planting machine having conveying means with
against said associated rod; and means for moving said
?exible prongs toward each other whereby said supporting
a circuitous movement and a plurality of such arms
mounted each at one end in spaced relation on the con
prong and said ?exible prongs form a three point grip on
veying means, said pot grasping arm comprising: a base;
a pot.
means for securing one end of said base to said con
4. A pot grasping arm for planting potted plants for 40 veying means; a supporting prong extending from the
use in a planting machine having conveying means with a
circuitous movement and a plurality of such arms
mounted each at one end in spaced relation on the con
other end of said base; a pair of rods secured to said
base having portions thereof lying in spaced relation to
each other and to said base and spaced therefrom; a
veying means, said pot grasping arm comprising: a base;
?exible prong having substantially greater ?exibility than
means for securing one end of said base to said conveying 45 said pair of rods secured to an end of said portion of
means; a supporting prong extending from the other end
each of said rods, said ?exible prongs lying in spaced,
of said base; a pair of rods secured to said base having
generally parallel relation to each other and said sup
portions thereof lying in spaced relation to each other and
porting prong and spaced therefrom; roller followers
to said base; a ?exible prong detachably secured to an
rotatably mounted on said portions of said rods; and
end of said portion of each of said rods, said ?exible 50 means for moving said roller followers and thereby said
prongs lying in spaced, generally parallel relation to each
rods toward each other for effecting movement of said
other and said supporting prong; each detachable ?exible
?exible prongs toward each other whereby said supporting
prong including an elongated ?exible member having an
prong and said ?exible prongs form a three point grip
opening in one end slidably receiving said portion of its
on a pot.
associated rod and a clamping member slidably envelop 65
8. A pot grasping arm for planting potted plants for
ing said end of said portion and said ?exible member, said
use in a planting machine having conveying means with
?exible member forceably bent toward and held against
a circuitous movement and a plurality of such arms
said assocated rod, frictionally binding the edges of said
opening against said associated rod; collars frictionally
mounted each at one end in spaced relation on the con
veying means, said pot grasping arm comprising: a base;
positioned on said ends of said portions of said rods, said 60 means for securing one end of said base to said con
collars preventing movement of said clamping members
veying means; a supporting prong extending from the
oii said ends; and means for moving said ?exible prongs
other end of said base; a pair of rods secured to said
toward each other whereby said supporting prong and
base having portions thereof lying in spaced relation to
said ?exible prongs form a three point grip on a pot.
each other and to said base and spaced therefrom; a
5. A pot grasping arm for planting potted plants for 65 ?exible prong having substantially greater ?exibility than
use in a planting machine having conveying means with a
said pair of rods secured to an end of said portion of
circuitous movement and a plurality of such arms
each of said rods, said ?exible prongs lying in spaced,
mounted each at one end in spaced relation on the convey
generally parallel relation to each other and said sup
ing means, said pot grasping arm comprising: a base;
porting prong and spaced therefrom; a generally V
means for securing one end of said base to said conveying 70 shaped spring, the vertex of said spring positioned around
means; a supporting prong extending from the other end
said base and the legs of said spring extending between
of said base; a pair of arms each having free end portions
said portions of said rods and biasing said portions apart;
of substantially greater ?exibility than the remaining part
means for limiting the parting of said portions of said
of said arm forming ?exible prong portions extending
rods; roller followers rotatably mounted on said portions
from said base, said ?exible prong portions lying generally 75 of said rods; and means for moving said roller followers
3,078,816‘
and‘thereby said rods toward each other for e?ecting
movement of said ?exible prongs toward each other where
by said supporting prong and said ?exible prongs form
a three point grip on a pot.
9. A pot grasping arm for planting potted plants for
use in a planting machine having conveying means with
a circuitous movement and a plurality of such arms
mounted each at one end in spaced relation on the con
veying means, said pot grasping arm comprising: a base;
means for securing one end of said base to said con
veying means; a supporting prong extending from the
other end of said base; a pair of rods secured to said base
having portions thereof lying in spaced relation to each
other and to said base and spaced therefrom; a flexible
8
means; a supporting'prong extending from the other end
of said base; a pair of rods secured to said base having
portions thereof lying in spaced relation to each other
and'to said base; a ?exible prong detachably secured to
an end of said portion of each of said rods, said ?exible
prongs lying in spaced, generally parallel relation to each
other and said supporting prong; each detachable ?exible
prong including an elongated ?exible member having
an opening in one end slidably receiving said portion of
its associated rod’ and a clamping member slidably en
veloping said end of said portion and said ?exible mem
her,‘ said ?exible member forceably bent toward and
held against said associated rod, frictionally binding the
edges of said opening against said associated rod; a
prong having substantially greater ?exibility than said 15 generally V-shaped spring, the vertex of said spring posi
tioned around said base and the legs of said spring ex
pair of rods secured to an end of said portion of each of
tending
between said portions of said rods and biasing
said rods, said ?exible prongs lying in spaced, generally
said portions apart; means for limiting the parting of
parallel relatiori to each other and said‘supporting prong
said portions of said rods; roller followers rotatably
and spaced therefrom; a generally V-shaped spring, the
vertex of said spring positioned around said base and the 20 mounted on said'portions of said rods; guard shields se
cured to said rods, said'guard shields lying between said
legs of said spring extending between said portions of
portions of said rods and said base; and means for moving
said rods and biasing. said portions apart; means for
said ?exible prongs toward each other whereby said sup
limiting the parting of said portions of said rods; roller
porting prong and said ?exible prongs form a three point
followers rotatably mounted on said portions of said
rods; guard shields secured to said rods, said guard shields 25 grip on a pot.
lying between said portions of said rods and said base;
References Cited in the file of this patent
and means for moving said roller followers and thereby
UNITED STATES PATENTS
said rods toward each other for effecting movement of
said ?exible prongs toward each other whereby said sup
1,026,492
Bruhn ______________ -_ May 14, 1912
porting prong and said ?exible prongs form a three point 30 1,596,678
Miller ______________ __. Aug. 17, 1926
grip on a pot.
10. A pot grasping arm’for planting potted plants for
use in a planting machine having conveying means with
a circuitous movement and a plurality of such arms
mounted each at one end in spaced relation on the con 35
veying means, said pot grasping arm comprising: a base;
means for securing one end of said base to said conveying
2,819,113
Phillips _______________ __ Jan. 7, 1958
2,853,962
Cease _______________ __ Sept. 30, 1958
1,066,788
454,387
Germany ______________ -_ Oct. 8, 1959
Great Britain ________ __ Sept. 30, 1936
FOREIGN PATENTS
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