close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3023575

код для вставки
March 6, 1962
H. E; MCKIBBEN ET AL
3,023,565
OSCILLATING BLUEBERRY STRIPPER
Filed Jan. 22, 1959
IN VEN TOR.
Pau/ /'._' Jbnes
BY
N
Horace
5 Ak/flbézn
A TTOK/VE'Y
United States Patent 0 ’
3,023,565,‘
Patented‘ Mar. 6, 1962
731
2.
3,023,565
portion'lS of‘a head 16. The head'16 extends generally
diametrically with respect to the bearing 14 and trans-7
OSCILLATING BLUEBERRY STRIPPER
Horace E. McKibben and Paul F. Jones, Dowagiac,
versely with respect to the handle 2 on the motor body.v
Mich, assignors to Blueberry Equipment, Inc., South
Haven, Mich.
Filed Jan. 22, 1959, Ser. No. 788,376
9 Claims. (Cl. 56-330)
by the clamp ring 18 and clamped'to the central portion:
of the head by the clamp ring 19 preforms the multiple:
functions of securing the head axially on the bearing 14‘
A ?exible rubber sleeve 1'7 ' clamped to the motor body'
while permitting radial oscillation of the head and while:
This invention relates to improvements in blueberry
excluding dust and debris from the motor and the head?
picking device. The principle objects of this invention 10 hearing.
are:
The transversely extending head 16 carries an aligned
First, to provide a power driven mechanical device for
series of depending pins or teeth 20. In the example
harvesting blueberries by vibrating the bush to cause ripe
shown, the head is provided with seven teeth equally
berries to fall from the bush without dislodging green
spaced and as appears more clearly from FIG. 1, the teeth
berries.
15 have straight sided cylindrical portion with tapered lower
Second, to provide a power operated device which is
ends approaching a point as at 21.
relatively light and easy to apply to a blueberry bush at
_ In use the device is operated by extending the teeth
various positions for vibrating the ripe berries from the
into and between the branches or stalks of a blueberry
bush.
bush above the cluster of berries on the stalk. If the
Third, to provide a bush engaging head which has a
stalks are small as on young bushes, the head is twisted
plurality of pins or teeth for engaging and vibrating
so that the stalks are engaged between two adjacent teeth
several branches of a blueberry bush simultaneously.
and the motor 1 is turned on to vibrate the stems. The
Fourth, to provide a berry picking instrument for a
ripe berries fall from the stems and may be collected on
bush engaging head which can be vibrated at different
a drop cloth or catching device spread under the bush
amplitudes for harvesting blueberries at different stages 25 prior to shaking the berries off. The size and spacing of
the pins or teeth 20 is important to successful operation of
Other objects and advantages of the invention will be
the device. Desirably the teeth are of the order of %
apparent from a consideration of the following descrip
of an inch in diameter and are spaced apart by an equal
tion and claims. The drawings, of which there is one
distance. However, the diameter of the pins can vary
sheet, illustrate a highly practical form of the blueberry 30 from 5/8 of an inch to l and 14 inches and the spacing
harvesting device of the invention.
between the teeth can vary from 1A2 inch to 1 inch. The
FIG. 1 is a side elevational view of the assembled
amplitude of vibration of the head and the pins is also
device.
important and is usually maintained at about 9/16 of an
of the growing season.
FIG. 2 is a fragmentary transverse cross sectional view
inch but can be varied between 3/.~,2 of an inch and 1 inch.
taken along the plane of the broken line 2—2 in FIG. 1. 35 The amplitude of vibration is adjusted by means of the
FIG. 3' is a fragmentary cross sectional view through
screw 12 at different periods during the harvest season
the eccentric adjusting portion of the device taken along
depending upon the degree of ripening of the berries.
the plane of the line 3—3 in FIG. 2.
Early in the harvesting season when there are only a
The device of the invention consists of a power driven
shaker adapted to be applied selectively to different por
tions of a blueberry bush to vibrate the branches of the
few ripe berries and relatively more green berries on the
stems, the stems are more brittle and it is desirable to
reduce the throw of the eccentric to prevent shaking 0132'
of green berries and breaking the stems. As the harvest
ripe blueberries to fall from the branches without dis
season progresses and the stems become less brittle the
placing or shaking off any material number of green
amplitude of vibration can be increased within the limits
berries so that the green berries remain on the bush to
45 stated.
be harvested later. To this end the device consists of a
The frequency of vibration of the pins 20 is also im
motor housing 1 having a handle 2 projecting from one
portant and 2500 oscillations per minute or revolutions
side thereof. The motor may be either an electric motor
of the shaft 5 is the best frequency. However, this fre
or an air operated motor and the details of the motor are
quency can vary between 2000 and 3500 revolutions per
not illustrated. A conduit for supplying energy to the
50 minute. Operating within the reaches of the amplitudes
motor is indicated conventionally at 3 and a trigger con
and frequencies stated and with pin sizes and spacings as
trol 4 for actuating the motor is desirably built into the
described, the device effectively shakes ripe blueberries
handle.
from the branches without dislodging any material num
The shaft 5 of the motor projects from the bottom
ber of green berries or leaves from the bushes so that the
of the housing 1 and is keyed at 6 to an eccentric block 7. 55 device can be used throughout the harvest season to
bush at an amplitude and frequency which will cause
The block 7 is secured axially on the shaft by a screw
quickly and selectively remove fresh ripe blueberries with
8 and it will be noted that the eccentric block is itself
a minimum of effort.
eccentric to the shaft 5 in that the ‘major portion of the
What is claimed as new is:
mass and weight of the block is disposed to one side of the
1. A blueberry picking device comprising a rotary
shaft and as appears to the left of the shaft in FIG. 2.
60 motor having a shaft and a handle projecting at an angle
The bottom surface of the eccentric block de?nes a
to the shaft of the motor, an eccentric block keyed to the
diametrically extending ‘dovetail slot 9 within which is
shaft of said motor with the center of mass of the block
slidably mounted a shaft block 1d having a short shaft 11
eccentric to the shaft, said block defining a dovetail slot
formed thereon and projecting downwardly below the
on its underside parallel to a radius from the center of
eccentric block. The shaft block 10 is adjustably posi 65 the shaft to the center of eccentricity of the block, a
tioned in the eccentric block by a screw 12 held in place
by the lock nut 13. The axis of the short shaft 11 is
shaft block slidably received in said slot and having a
short shaft projecting below the eccentric block, screw
adjusted to varying degrees of eccentricity on the oppo
means adjustably engaged between said blocks to posi
site side of the center line of the motor shaft 5 from the
tion said short shaft eccentric to said motor shaft by
center of mass of the eccentric block.
70 about 5/16 of an inch, a head having a circular center
Positioned around the short shaft 11 is an antifriction
portion embracing said short shaft, an anti-friction ball
ball bearing 14 engaged in a recess in the center circular
bearing engaged between said short shaft and said center
3,023,565
4
5. A blueberry picking device comprising a rotary
portion of said head, a ?exible sleeve member connect
ing said motor with the center portion of said head, and
a series of pins generally parallel to said shaft and se
said pins being about 34 inch in diameter and about
motor having a shaft and a handle, an eccentric block
keyed to the shaft of said motor with the center of
mass of the block eccentric to the shaft, a shaft block
having a slidable engagement with the underside of the
% inch apart and having straight shanks and tapered
eccentric block radially of said motor shaft and having
tips, said motor being arranged to rotate at about 2500
revolutions per minute,
2. A blueberry picking device comprising a rotary
a short shaft projecting below the eccentric block, means
cured to said head in a line transverse to said handle,
adjustably engaged between said blocks to position said
short shaft eccentric to said motor shaft by about 3/10 of
motor having a shaft and a handle projecting at an angle 10 an inch, a head having a center portion embracing said
short shaft, an anti-friction bearing engaged between
to the shaft of the motor, an eccentric block keyed to the
said short shaft and said center portion of said head, a
shaft of said motor with the center of mass of the block
?exible member connecting said motor with the center
eccentric to the shaft, said block de?ning a slot in its
portion of said head, and a series of spaced pins gen
underside parallel to a radius from the center of the
shaft to the center of eccentricity of the block, a shaft 15 erally parallel to said shafts and secured to said head
in a line, said pins being about 3/4 inch in diameter and
block slidably received in said slot and having a short
about % inch apart and having tapered tips, said motor
shaft projecting below the eccentric block, means ad
being arranged to rotate at about 2500 revolutions per
justably engaged between said blocks to position said
minute.
short shaft eccentric to said motor shaft by about 3/16
6. A blueberry picking device comprising a rotary
of an inch, a head having a center portion embracing
motor having a shaft and a handle, an eccentric block
said short shaft, an antifriction bearing engaged between
keyed to the shaft of said motor, a shaft block having a
said short shaft and said center portion of said head, a
slot and tongue engagement with the underside of the
flexible sleeve member connecting said motor with the
eccentric block and having a short shaft projecting below
center portion of said head, and a series of pins gen
the eccentric block, means adjustably engaged between
erally parallel to said shafts and secured to said head
said blocks to position said short shaft eccentric to said
in a line, said pins being about 3%; inch in diameter and
motor shaft, a head having a center portion embracing
about % inch apart and having straight shanks and
said short shaft, an anti-friction bearing engaged between
tapered tips, said motor being arranged to rotate at
said short shaft and said center portion of said head, a
about 2500 revolutions per minute.
3. A blueberry picking device comprising a rotary 30 flexible member connecting said motor with the center
portion of said head, and a series of spaced pins generally
motor having a shaft and a handle projecting at an angle
parallel to said shafts and secured to said head in a line,
to the shaft of the motor, an eccentric block keyed to
said motor being arranged to rotate at about 2500 revolu
the shaft of said motor with the center of mass of the
tions per minute.
block eccentric to the shaft, said block de?ning a dove
tail slot on its underside parallel to a radius from the cen
35
7. A hand portable blueberry picking device compris
ing a head having a series of bush engaging teeth project
ter of the shaft to the center of eccentricity of the block,
ing therefrom and arranged side by side in a single line,
a shaft block slidably received in said slot and having
said teeth being between 5/8 and 1 and 1%: inches in diam~
a short shaft projecting below the eccentric block, screw
eter and being spaced apart between 1/2 and 1 inch, said
means adjustably engaged between said blocks to posi
tion said short shaft eccentric to said motor shaft by 40 teeth having rounded cross sections and tapered tips, a
handle and a motor operatively associated with said
between 3/32 and 1/2 of an inch, a head having a circu
handle and connected to orbitally oscillate said teeth
lar center portion embracing said short shaft, an anti
transversely to their length and longitudinally of the line
friction bearing engaged between said short shaft and
of teeth at an amplitude of between 3716 to 1 inch and at
said center portion of said head, a ?exible sleeve mem
ber connecting said motor with the center portion of 45 a frequency in the range of from 2000 to 2500 oscillations
per minute.
said head, and a series of pins generally parallel to said
shaft and secured to said head in a line transverse to
8. A hand portable blueberry picking device comprise
ing a head having ‘a series of spaced bush engaging teeth
projecting therefrom and arranged side by side in a single
line, said teeth being between 5/8 and 1 and 1%; inches in
having straight shanks and tapered tips, said motor being
diameter and being spaced apart between 1A2 and 1 inch,
arranged to rotate in the range between 2000 and 3500
said teeth having straight shanks, a handle and a motor
revolutions per minute.
operatively associated with said handle and connected to
4. A blueberry picking device comprising a rotary
orbitally oscillate said teeth transversely to their length
motor having a shaft and a handle, an eccentric block
keyed to the shaft of said motor with the center of mass 55 and longitudinally of the line of teeth at a frequency in
the range of from 2000 to 3500 oscillations per minute.
of the block eccentric to the shaft, said block de?ning
said handle, said pins being between 5/8 and 1 and 3/4
inches in diameter and between 1/1 and 1 inch apart and
a dovetail slot on its underside parallel to a radius from
9. A hand portable blueberry picking device compris
ing a head having a series of spaced bush engaging teeth
the center of the shaft to the center of eccentricity of
projecting therefrom and arranged side by side in a single
the block, a shaft block slidably received in said slot
and having a short shaft projecting below the eccentric 60 line, a handle and a motor operatively associated with
said handle and connected to orbitally oscillate said teeth
block, screw means adjustably engaged between said
transversely to their length and longitudinally of the line
blocks to position said short shaft eccentric to said
of teeth at a frequency in the range of from 2000 to 3500
motor shaft by between 9%;2 and 1/z of an inch, a head
oscillations per minute.
having a center portion embracing said short shaft, an
anti-friction bearing engaged between said short shaft 65
and said center portion of said head, a flexible member
connecting said motor with the center portion of said
head, and a series of pins generally parallel to said shaft
and secured to said head in a line transverse to said han
dle, said pins being between 5%; and 1 and 1% inches in 70
diameter and between 1/2 and 1 inch apart and having
tapered tips, said motor being arranged to rotate in
the range between 2000 and 3500 revolutions per minute
References Cited in the ?le of this patent
UNITED STATES PATENTS
855,342
975,436
1,577,751
Richmond ___________ __. May 28, 1907
Kunkel _____________ __ Nov. 15, 1910
Paschall ____________ __ M'ar. 23, 1926
2,479,253
2,544,443
Prediger ____________ __ Aug. 16, 1949
Brateng ______________ __ Mar. 6, 1951
Документ
Категория
Без категории
Просмотров
0
Размер файла
429 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа