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Патент USA US2128874

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Aug. 30, 1938.
2,128,874
|_. J. MEYER
NUT ‘CRACKING MACHINE
Filed Oct. 21,_ 1935
30 22
a Shéets-Sheet 1
'19'‘129.4
35
65
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150 J MEYER
‘ATTORNEY
Aug. 30, 1938.
L. J. MEYER
' 2,128,874
NUT CRACKING MACHINE
Filed Oct. 21, 1935
5 Sheets-Sheet 2
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BY
Aug. 30,- 1938.
|_. J. MEYER
2,128,874
NUT CRACKING ‘MACHINE
Filed Oct. 21, 1955
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s Sheets-Sheet :5
Patented Aug. 30, 1938
” 2,128,874
r orgies
UNITED ems
2,128,874
NUT-CRACKENG MACHINE
Leo J. Meyer, St. Louis, Mo., assignor, by direct
and mesne assignments, of one-third to .l'ohn
A. Schuler, St. Louis, Mo, and twonthirds to
The Champion Pecan Machine Company, .San
Antonio, Tex, a corporation of Texas
Application October 21, 1935, Serial No. 45,875
4 Claims.
This invention relates generally to nut-crack
ing machines, and more particularly to a nut
cracking machine which is capable of cracking
edible nuts of varying sizes in a simple and ef
5 fective manner, without danger of mashing the
kernels of the nuts, the predominant object of
the invention being to provide an improved nut
cracking machine of this type which includes
means arranged for continual rotary motion dur
10 ing operation of the machine which receives and
supports the nuts during nut-cracking opera
tions of the machine.
Fig. 1 is a side elevation of the improved nut
cracking machine.
1.5
Fig. 2 is an end elevation of the machine with
parts thereof shown in section.
v
Fig. 3 is an elevation of the end of the machine
opposite to the end illustrated in Fig. 2 and with
parts of the machine shown in section.
Fig. 4 is a fragmentary sectional view taken
20
longitudinally through the machine on line i-—4
of Fig. 2.
Fig. 5 is a fragmentary, sectional View taken
on line 5-5 of Fig. 3, illustrating the means for
25 conveying nuts from the hopper of the machine to
the nut-cracking means thereof.
w
Fig. 6
View of
machine
uniform
is pulley 9, over which a power transmission belt
iii operates, this belt operating also over a small
er pulley H mounted on the power'shaft l2 of
an electric motor l3. The electric motor I3 is
supported by suitable bracket means M, which
in turn is secured to a structure It of which the.
bearing 8 forms a part, the structure l5 being
secured to and extended upwardly from the bed
i of the machine. It is obvious that rotary
movement will be transmitted from the pulley l l 10
to the pulley 9 by the belt In so as to rotate
the shaft ‘l and thereby transmit rotary motion
to the main shaft 3 of the machine through the
pinion 6 and the gear wheel 5.
Fixedly mounted on the main shaft 3 of the
machine A is a‘ worm It (Figs; 1 and 2), with
which a worm wheel H is arranged in mesh. The
worm wheel H is mounted on a shaft l8 which
extends longitudinally of the machine, said shaft
it being mounted for rotation in bearings I9.
At the end of the shaft l8 opposite to the end
thereof at which the Worm wheel l‘! is arranged,
a rotary nut-receiving member 2|] is ?xed to said
shaft for rotary movement therewith. The rotary ‘
nut-receiving member comprises a body portion 25
2!, which is ?xed to the shaft [8 by means of a
is an enlarged fragmentary, sectional key M’ or otherwise, and an outer portion 22,
the. compensating mechanism of the _ which is secured to the body portion by bolts 23
which serves to insure application of which extend through circular apertures formed
nut-cracking force to nuts of varying through the body portion v.2! and arcuate slots 30
24 formed in the‘ outer portion 22 so as to permit
sizes.
Fig. 7 is a fragmentary, enlarged View showing
one of the nut-receiving elements associated with
the endless chain of the nut-feeding mecha
35 nism of. the machine.
‘
Fig. 8 is a side elevation of the parts shown
in Fig. 7.
>
In the drawings, wherein is shown for the pur
pose of illustration, merely, one embodiment of
40 the invention, A designates the improved nut
cracking machine generally.
The machine A
includes a frame or bed I which is supported
is
(Cl. 1146-12)
upon suitable legs 2, and this frame or ‘bed sup
ports the various parts of the machine which
will be hereinafter described. Extended trans
versely of the bed. of the machine A adjacent
to an end thereof is a main shaft 3 which is
mounted in bearings 4 (Fig. 2) that are supported
by the bed of the machine, said main shaft hav
,50 ing ?xedly mounted thereon a gear wheel 5. The
gear wheel 5 has arranged in mesh therewith a
pinion 6 which is mounted on a shaft 1, said
shaft 1 being supported for rotation in a bear
ing 8 extended transversely of the machine above
55 the bed thereof. Also mounted on the shaft 1
adjustment of the outer portion 22 vabout the
shaft l8 and with respect to the body portion
2!. The outer portion 22 of the nut-receiving
member 2d includes outwardly extended and cir 35
cumferentially spaced portions 25. (Fig. 3), each
of which includes a nut-receiving pocket 26.
It is important to note that the nut-receiving
pockets 26 are not parallel with respect to the
axis of the shaft it, but instead said pockets are
extended longitudinally at a slight angle rela
tive to the axis of said shaft l8. This is shown
most. clearly in Figs. 1, 3, and 4.
'
The improved nut-cracking machine includes
a hopper which receives nuts to be cracked by the 45
machine, said hopper including a tapered upper
portion 2'? which communicates with a lower
hopper portion 28 which has an inclined lower
wall 28', and this lower hopper portion 28 com
municates in turn with a hopper portion 29 ar 50
ranged at one side of the lower hop-per portion
28. By referring particularly to Figs. 1 and 5,
it will be noted that the hopper portion 29 is
provided with an inclined wall 29’ which merges
into a curved portion 30 which is open at its 55
2
2,128,874
outer end. Also, the views mentioned show that
the hopper portion 29 is provided with an up
with the nut-receiving member in a manner to be
hereinafter explained, and being thereafter dis
wardly inclined end wall 3!, which is provided
charged in a cracked condition from the chute 42.
at its top with a horizontal portion 3|a and at
its bottom with a portion 3i‘J which is extended
at a slight angle with respect to said end wall.
It will be noted that the curved portion 30 at the
An endless conveyor 32 is arranged at the end
wall I“ of the hopper portion 29, said endless
conveyor comprising upper and lower sprocket
10 wheels 33, over which operates a sprocket chain
bottom of the hopper 29 is provided with an ex
tension 43 (Fig. 5) . This extension prevents the
nuts from falling from the open lower end of the
hopper, and the plates 36 of the nut-receiving
34 which is provided with spaced nut-receiving
elements 35 straddle said extensions when passing
10
same, or pass at opposite sides thereof.
The improved nut~cracking machine disclosed
elements 35. It is to be noted that one ?ight of
the endless sprocket chain 34 of the conveyor 32
herein includes a compensating mechanism which
provides for the same cracking pressure being
moves upwardly within the hopper portion 29 in
applied to various nuts, even though they are
of different sizes. This mechanism is best shown
in Figs. 4 and 6, wherein the compensating mech
15 contact ‘with the inner face of the end wall 3|
thereof, and that the other flight of said endless
chain moves downwardly in a position outside of , ,anism is designated by the reference character
said hopper portion (see Fig. 5). The upper
sprocket wheel 33 of the endless conveyor is
20 mounted on a shaft 33a which is supported in
bearings mounted on the horizontal portion 3W
of the end wall of the hopper portion 29, and the
lower sprocket wheel 33 of said conveyor is
mounted on a shaft 33b which is supported in
25 bearings ?xed to the bed of the 'machine. The
chain 34 of the conveyor 32 receives its move
ment through the instrumentality of a sprocket
chain 34*‘ which operates over sprocket wheels
34*) and 34° mounted on the shafts'3 and 33”,
30 respectively (Fig. 1).
Each of the nut-receiving elements 35 com
prises a pair of spaced, plate-like elements 36
shaped in side elevation as shown to the best
35
advantage in Fig. 8, and the pair of associated
plates providing each nut-receiving element con
stitutes a link in the endless chain 32, being con
nected to adjacent links of the chain by the usual
pins or rivets.’ The pair of plates 35 providing
each nut-receiving element include extended por
tions 31, which project outwardly beyond the
chain proper, and at the tops and bottoms of
these extended plate portions outwardly ?ared
portions 31' are provided. These outwardly
flared portions 31’ provide nut-receiving pockets.
45 As is apparent in Fig. 7, the nut-receiving pocket
at the top of the nut-receiving element is larger
than'the nut-receiving pocket at the bottom
thereof. Thus when larger nuts are being
cracked by the machine the chain 35'will be ar
50
ranged so'that the larger nut-receiving pockets
are uppermost as the nut-receiving elements 35
pass upwardly through the hopper, and when
smaller nuts are being cracked the chain will be
arranged so that the smaller nut-receiving
55 pockets are the uppermost, effective nut-receiving
pockets.
7
,
V
The rotary nut-receiving member 20 is disposed
within a housing GE) which includes an upper, in
clined wall Ill and a lower, discharge chute 112.
60 In the operation of the machine, the uppermost
nut-receivingpocket of each nut-receiving ele
ment 35 picks up a nut as said nut-receiving ele
ment passes upwardly through the hopper, where
in a store of nuts is maintained.
As each nut
receiving element 3? passes over the upper
sprocket wheel 233, the nut is discharged there
from onto the inclined wall 4!, said. nut sliding
down'said wall into the main portion of the hous
ing M! of the rotary nut-receiving member 20,
Where said nut is received by a pocket 26 of said
nut-receiving member. -The nut-receiving mem
ber 26 is constantly rotated during operation of
the machine, and the nut so deposited in a pocket
thereof is carried around by the nut-receiving
member, said nut being cracked during its travel
45. The compensating mechanism comprises a
movable die 46, which is'movable toward and from
a ?xed die 41', said ?xed die being supported by
a portion 48 associated with the bed of thema
chine.
The dies 66 and 1%? are provided with cav
ities 49 formed in their nut-contacting'faces.
The movable die “is associated with a rack 50
which is guided for reciprocatory movement with
25
in a carriage or box-like structure 5!, this box
like structure comprising a body portion 52 and
a cover plate 53.
By referring to Fig. 4 it will
be noted that the bottom wall of the body portion
52 of the box-like structure 5| is‘ thicker at its 30
forward end than at its rearward end, a shoulder
54 being present at the point where the thicker
and thinner portions of said bottom wall meet.
Mounted for reciprocating movement within the
rear'portion of the box-like structure 5i is an ele
ment 55 which is provided witha wall portion 56,
which extends to the lower face of the cover
plate 53 of said box-like structure. A pin 5'! ex
tends forwardly from said wall portion into a cav
ity 53 formed in the body portion of the rack 50, 40
and a coil spring 59 which encircles said pin con
tacts at its opposite ends with the forward face
of the wall portion 56 and the face at the inner
end of the cavity 58 formed in the rack 56. This
coil spring tends to move the rack 55 and the asso 45
ciated die 46 in a forward direction, a plate 60
which is secured to the forward face of the body
portion 52 of the box-like structure 5! serving
as a stop with which a shoulder 55' at the for
ward end of the rack contacts to limit forward '
movement of the rack and die 45 with respect to
the box-like structure 5!, in response to pressure
of the coil spring 59.
V
Mounted on a shaft 6! supported by the bottom
wall and cover plate of the box-like structure is
a pinion 52 which meshes with the teeth of the
rack 50, this pinion having associated with it a
disk 63 which is provided with a toothed or rough
ened peripheral surface.
55
The pinion andthe disk
rotates as a unit, and the element 55 is provided
with a curved face 64 having a toothed or rough—
ened face. Also the element 55 is connected to a
disk 55 mounted on the main shaft 3 of the ma
chine by a link 85, which is pivotally attached at
6'! to the disk'65 and, at 68 to the element 55 (Fig.
4). The element 55 has extended. downwardly
from the bottom wall thereof a lug G9 which
passes through an elongated opening v'lllformed
in the bottom wall of the box-like structure 5!.
This lug is engaged by an end of a plunger H sup 70
ported by the portion 12 associated with the bot
tom wall of the box-like structure, and said
plunger ‘H is urged toward said lug by a coil spring
73 housed withinsaid portion 12.
The forward portion of the bed of the machine
3
2,128,874
supports a screw-threaded element 14 (Fig. 6),
which is alined longitudinally of the machine
with an opening ‘l5 formed in the body portion
of the box-like structure 5i and with an opening
76 of smaller diameter which is formed in the
plate 50. Arranged within the opening 15 is a
disk 11 from which a pin 18 is extended, said disk
being engaged by one end of a coil spring 19
which contacts at its opposite end with the inner
10 end wall of the opening 15. The coil spring 19
surrounds the pin 18 and said coil spring forces
the disk T! into close contact with the portion
of the inner face of the plate 60 which surrounds
the opening 76 formed therein.
In the operation of the machine, the nuts to
15
be cracked are carried around in the pockets 28
of the constantly rotating element 28 in the di
rection of the arrow in Fig. 3 to the position C
of the dies 46 and 4?‘. As each pocket 26 of the
20 element 20 approaches the cracking position C,
the machine is so timed that the compensating
mechanism 65 moves forwardly as a unit until
the forward end of the movable die 46 contacts
with the nut carried within the pocket and moves
25 said nut into contact also with the ?xed die M,
the inclined arrangement of the pockets permit
ting the die 46 to move into said pockets while
the member 29 is rotating. ,Theposition of the
nut between the dies ‘i6 and 41 arrests further
30 forward movement of the movable die 46, but the
box-like structure 5! and the element 55 continue
their forward movement in response to rotary
movement of the disk 65. During such forward
movement of the box-like structure 5! and the
35 element 55 with respect to the rack 50 the coil
spring 59 is compressed, and also because the
pinion 62 is moved longitudinally of the teeth
of the rack this pinion and the disk 63 associated
therewith are rotated. When the box-like struc
40 ture has moved the proper distance in a forward
direction, the end portion of‘ the screw-threaded
element 14 (Fig. .6) will enter the opening 16
in the plate 60 to contact with the disk ‘H, where
by the coil spring 19 will arrest further forward
45 movement of the box-like structure.
At this time the element 55 has not quite
reached the forward limit of its movement, and
therefore said element 55 continues to move for
wardly.
This additional movement brings the
50 toothed face 64 into contact with the toothed
peripheral face of the disk 63 so as to arrest fur
ther rotation of the pinion 62 and lock the pinion
and the rack together, so that theyare incapable
of further relative movement. This happens just
55 before the element 55 reaches the limit of its for
ward movement, and as said element 55 continues
its forward movement after contact of the face
"54 with the peripheral face of‘ the disk 63, the
element 55, the box-like structure, and the rack
,60 50 and die 46 are locked together, and all of said
parts move forwardly as a unit. This additional
movement gives to the die 46 the necessary for
ward movement to crack the nut without crush
ing the kernel thereof. It is to be observed that
65 While forward movement of the box-like struc
ture 5| is arrested by the screw-threaded element
to enable the die 46 to engage the nut in the next
pocket of the element 20 as it approaches the
cracking position C, the compensating operation
and the cracking operation being performed as
each successive pocket of the element 2% ap
proaches and reaches the nut-cracking position.
The extensions 2'5 of the nut-receiving member
20 at their opposite sides are provided with re 10
cesses 80 and 8|, the recesses at each side of said
member being arranged in circular formation
concentric with respect to the shaft Hi. The op
posite walls of the housing M of the member 20
are provided with curved extensions 82 and 83, 15
which are received by the recesses 89 and 86 as
the member 28 rotates. These curved extensions
serve to guide the nuts to their proper positions
in the pockets 26 of the member 20, and also said
extensions act to dislodge any nuts which may .20
become jammed in said pockets. If desired, the
extension '82 may be provided with a toothed or
serrated edge which causes the nuts to be agi
tated, so that positioning of the nuts will be
aided and sticking thereof prevented. It will be 25
noted that the extension 83 is provided with an
inclined face 83', which serves to cam the nuts
to the centers of the pockets as the nut-receiving
member rotates with respect to said extension.
Also the portions 25 of the nut-receiving mem 30
ber 20 are provided with depressions 25’ which
aid in centering the nuts in the pockets.
'
It is important to note that when a nut is en
gaged between the cracking dies of the machine,
its movement with the‘ constantly rotating nut
receiving member 20 is arrested, and the pocket
of said nut-receiving member in which the nut
was carried moves away from the arrested nut.
Thus, when the actual cracking of the nut takes
place, it is entirely spaced apart from the pocket 40
of the nut-receiving member in which it was car
riedto the cracking position, and therefore the
nut is free from contact with any parts of the
machine which might tend to interfere with com
plete cracking of the shell of the nut.
45
I claim:
'
1. A nut-cracking machine comprising a sub
stantially circular member‘ mounted for rotary
movement and provided with nut-receiving pock- '
ets spaced circumferentially thereof, said nut-re 50
ceiving pockets being open at their opposite ends
at opposite sides of said member and each pocket
being open longitudinally of its length at a side
thereof to permit introduction of nuts into said
pocket, means for imparting constant rotary 55
movement to said member, means for delivering
nuts to the pockets of said member, and nut
cracking means for cracking nuts carried by the
pockets of said member, said nut-cracking means
including a pair of alined and spaced apart crack
ing elements between which the pocketed circum
ferential portion of said member rotates, and
means for subjecting one of said cracking
ments to reciprocatory movement toward
from the associated cracking element and
and out of the pockets of said member as
ele
and
into 65
said
M, the coil spring 79 permits said box-like struc
pockets successively move into operative position
ture to move forwardly the required additional
with respect to said cracking elements and while
said pockets are in movement so as to crack be
distance to crack the nut.
70
ingthis time is rotating, and eventually the com
pensating mechanism will again move forwardly
_
I
When the nut has been cracked as described,
the compensating mechanism 45 is moved rear
wardly in response to movement of the disk 65
and the link 66, and at this time the coil spring
13 separates the face Eli from the peripheral face
75 of the disk 63. The nut-carrying element 2|] dur
tween said cracking elements the nuts carried 70
by said pockets, the axis of each pocket being
extended at an angle with respect to the axis of‘
said reciprocatory cracking element when each
pocket is in cooperative relation with respect to
said reciprocatory cracking element so as to per
75
2,128,874
mit said reciprocatory cracking element to move‘
into the pocket while said member of which the
pocket forms a part is in constant rotary motion.
2. A nut-cracking machine comprising a sub
stantially circular member mounted for rotary
ets spaced circumferentially thereof, said nut
to said reciplrocatory cracking element so as to
permit said reciprocatory cracking element to
move'into the pocket while said member of which
receiving pockets being open at their opposite
the pocket forms a part is in constant motion,
ends at opposite sides of said member and each
pocket being, open longitudinally of its length at
ciprocatory cracking element for compensating 10
a side thereof to permit introduction of nuts into
for nuts of different lengths so that a ?xed
movement and provided with nut-receiving pock
said pockets, means for imparting constant rotary
movement to said member, means for delivering
nuts to the pockets of said member, nut-cracking
15 means for cracking nuts carried by the pockets
of said member, said nut-cracking means includ
ing a pair of alined and spaced apart cracking
elements between which the pocketed circumfer
ential portion of said member rotates, and means
20 for subjecting one of said cracking elements to
reciprocatory movement toward and from the
associated cracking element and into and out of
the pockets of said member as said pockets suc
cessively move into operative position with re
25 spect to said cracking elements and while said
pockets are in movement so as to crack berwc:
said cracking elements the nuts carried by said
pockets, and means for dislodging nuts from the
pockets of said member after said nuts have been
cracked.
'
3. A nut-cracking machine comprising a sub
stantially circular member mounted for rotary
movement and provided with nut-receiving pock
ets spaced circumferentially thereof, said nut
35 receiving pockets being open at their opposite
ends at opposite sides of said member and each
pocket being open longitudinally of its length at
a side thereof to permit introduction of nuts into
said pockets, means for imparting constant rotary
movement to said member, means for delivering
nuts to the pockets of said member, and nut
cracking means for cracking nuts carried by the
pockets of said member, said nut-cracking means
including a pair of alined and spaced apart crack
45
ing elements between which the pocketed cir
cumferential portion of said member rotates, one
of said cracking elements being ?xed in a sta
tionary position and the other of said cracking
' elements being supported for reciprocatory move
ment, means for subjecting said reciprocatory
50 cracking element to reciprocatory movement to
55
carried by said pockets, the axis of each pocket
being extended at an angle with respect to the
axis of said reciprocatory cracking element when
each pocket is in cooperative relation with respect
ward and from the stationary cracking element
and into and out of the pockets of said member
as said pockets successively move into operative
position with respect to said cracking elements
and while said pockets are in movement so as to
crack between said cracking elements the nuts
and means cooperatively associated with said re
amount of cracking movement is applied to each
nut being cracked regardless of the length of
the nut.
4. A nut-cracking machine comprising a sub
stantially circular member mounted for rotary
movement and provided with nut-receiving pock
ets spaced circumferentially thereof, said nut
receiving pockets being open at their opposite
ends at opposite sides of said member and each
pocket being open longitudinally of its length at
29
a side thereof to permit introduction of nuts into
said pockets, means for imparting constant rotary
movement to said member, means for delivering
nuts to the pockets of said member, and nut
cracking means for cracking nuts carried by the
pockets of said member, said nut-cracking means
including a pair of ,alined and spaced apart crack
ing elements between which the pocketed cir
cumferential portion of said member rotates, one
of said cracking elements being ?xed ina station
ary position and the other of said cracking ele
ments being supported for reciprocatory move
ment, means for subjecting said reciprocatory
cracking element to reciprocatory movement to
ward and from the stationary cracking element
and into and out of the pockets of said member
.39
as said pockets successively move into operative
position with respect to saidcracking elements
and while said pockets are in movement so as to
crack between said cracking elements the nuts
carried by said pockets, the axis of each pocket
being extended at an angle with respect to the
axis of said reciprocato-ry cracking element when
each pocket is in cooperative relation with respect
to said reciprocatory cracking element so as to
45
permit said reciprocatory cracking element to
move into the pocket while said member of which
the pocket forms a part is in constant motion,
means cooperatively associated with said recipro
catory cracking element for compensating for so
nuts of different lengths so that a fixed amount
of cracking movement is applied to each nut being
cracked regardless of the length of the nut, and
means for dislodging nuts from the pockets of
said member after said nuts have been cracked.
,
LEO J. MEYER.
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