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Патент USA US2112259

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March 29, 1938.
2,112,259
W. C. WYLAND
EGG GRADING MACHINE BY WEIGHT
Filed Oct. 24, 1934
4 Sheets-Sheet 1
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March 29», 1938.
2,112,259
w. c. WYLAND
EGG GRADING MACHINE BY WEIGHT
Filed Oct.
24, 1934
4 Sheets-Sheet 2
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March 29, 1938.
w. c'. WYLAND
2,112,259
EGG GRADLVIING MACHINE BY WEIGHT
Filed Oct. 24, 1934
4 Sheets-Sheet 3
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118
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March 29, 1938.
' w. c. WYLAND
2,112,259
EGG GRADING MACHINE BY WEIGHT
Filed 0013; 24, 1934
4 Sheets-Sheet 4
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2,112,259
Patented Mar. 29, 1938
UNITED‘ STATES _
v,
PATENT omen
2,112,259 '
V
_
EGG GRADING mcnmn er wmcnr _‘ =
William Chester wymmsan Gabriel, ciur.,.'.,.:
slgnor to J.- W. -Wyland & Sons; Los ,Angeles,
Calii'., a. corporationgofcalifornia,
.
>
a '
-
Application October 24,1934, Serial bio-149.965
18 Claims- (Cl. 209-421)
before being engagedlbylftheufeedlng slat. of‘, the '_ V
My invention relates to a type of machine‘ in
which eggs are graded, sorted and separated into
bins for packing automatically in accordance
grading part of the'machine. , 'I'his'feature of my
invention‘ reduces‘ he, impact'of the egg against
with the weight of the egg. My invention may" the bridging piece, reduc'esthe distance-me fegg , ' 7
5 be considered as an improvement or further de
velopment of the patent to J. W. Wyland, Egg
must be lowered at,thisvpoint'andi'also reduces
the ‘initial velocity‘ of the egg ic'nto the ‘weighing
runwayv and eliminates ‘the impact? of'the .egg sizing machine by weight, No. 1,728,463, Septem
against .the'f'eeding slats- ofthe weighlngcon~~
ber 17, 1929, in which the control of the device.
‘These features all reduce the danger- of _ r
for dumping the eggs was electrically controlled. veyor.
egg
breakage
and effect a more gentle handlingwof '10
The present machine involves improvements in
10
the
eggs
at
the
point of transferencei‘ The new
the feeding or transfer of the eggs from a feeding‘ arrangement also
provides for _'a_ more uniform
mechanism to the weighlngpart of the machine,
. presentation of the eggs to the weighing scale ‘
over the above mentioned patent.
My invention is also an improvement over the
resulting in faster and more accurate weighing of
'
“
.
'15
eggs.
.
~15 patent for Egg sizing machine by weight, John theAnother
improvement resides in employing
W. Wyland, Patent Number 1,954,164, dated ,what maybe termed overhead type of pushers for
‘ April 10, 1934, this latter patent involving the
control of the dumping device by mechanical ac
tion of the weighing scale.
’
-'
‘
The present machine also involves improve
20 ments in the transfer of eggs from a roller con
veyor to the egg grading machine by weight, dis
closed‘ in my patent application Serial Number
the eggs on the weighing runway in contra-dis
tinction to pushing slats which feed the eggs from
the bridging piece onto the weighing- runway 20
and in which the latter travel upwardly on the
bridging
piece.
a
-
i
'
'
A further feature of the present type of over- ’
head feed is-ln employing an endless chain with
' 693,608, ?led October 14,’ 1933, Egg candling and pusher slats shaped to engage vthe eggs, this being 25
'25
sizing machine, patented February" 16, 1937, No.
2,070,980.
,
‘,
The present machine diverges from the previ
ous Wyland patents in a number offeatures, one
of the improved features being the device for
30 transferring eggs from ‘a roller feed conveyor,v
onto the weighing part of the ‘machine and sub
stantially directly onto the weighing runway,
and this involves what may be termed an over
head .type of feed or pushers for the eggswhen
traveling on ‘the weighing runway.
The present machine also involves a consider
able improvement in the device for diverting the
eggs from the weighing runway after. having
caused a'depression of a scale welghingbeam.
40, My present invention, as to the first named fea
ture of the transfer of eggs has for an object'to
reduce the distance of drop or downward roll of
an egg at the end of the infeed roller conveyor
at its place of transference to the weighing and
" grading part of the machine.
‘5
One of the main features of my invention as,
to the transference ofi'eggs involves a construc
synchronized with the roller feed conveyor‘ where
'by the eggs have a time of free rolling on the
weighing runway before being engaged‘by these
pusher ‘slats.
,
,
,
A secondary feature of the transfer feeding 30'
mechanism'lies in using a resilient center por
tion of two forward bridging pieces, the purpose
of which is to absorb the slight impact of the eggs
against the bridging piece through the ?exure
of a spring and also to reduce the gap between
the'bridging piece to less than the least diameter
of the feed rolls, this being due to the partial clo
sure of the gap‘ under the spring action.
‘if.
Another feature of my invention resides in ‘the
concave'feed roller itself in passing the bridging 40
'
piece causing a depression or retraction of the
'
spring. giving sufficient room for the feedroll at
the end of its travel to move downwardly and
thus follow a lower path to the infeeding end of
the conveyor. This spring is adjusted as to 45
strength so that the weight of the egg will de
press the center portlon allowing the egg to rest
tion employing a bridging piece on which_'the on four points comprised of two‘ fixed projecting
at the side of a forward bridge and two 50
eggs are partly supported between the roller ln- - points
projecting
points on a rearward bridge. This
50 reed conveyor and the weighing runway where
by when an egg at its time of transferrolls slight ' four point support in conjunction with the pres
ly ahead of the concave feed roll onto the bridg
ing piece, and this is shoved by the same feed roll
onto the weighing runway, thus is given an im
55 petus whereby it rolls by gravity on such runway
sure exerted on the egg by the concaved feed roll
tends to cause and maintain a proper position
of the egg with its long axis transverse to the 55
direction of movement thereby causing the egg
,
2,112,259
to roll uniformly and in a straight direction on
lodging at the discharging end of the belt at the‘
end of the slot I employ angular de?ectors which
thrust the egg oil one side of the transferring
the weighing tracks, thus promoting an increased
speed and accuracy in the weighing portion of
the machine.
:
v
'
\
'-
-
'
"‘
belt before, it‘ reaches the downwardly moving
Another main important feature of my inven
tiongrelating to the operation of the weighing
mechanism for the eggs has a point of distinction
from the prior patents mentioned in that the
roller of the roller feed for eggs in discharging
10 an egg also pushes the eggon'to the ?xed track
portion of the belt at the end of the slot in the
bin.
‘
'
"
'
~
‘ My ‘invention is illustrated in connection with
the accompanying drawings, in which:
-
Fig. llis ‘a plan of ; emachine taken in the
direction of the arrow' Loni-‘lg. 2.
of the weighing runway on which it rolls down
w
._
,
Fig. 2 is a longitudinalise'ction on the line 2-?
’ wardly ‘by gravity, and‘the weight is then trans
10
of Fig. 1 in the direction of the'arrcws. *
ferred tcthe tracks on the scale; and this is done
Fig. 3 is a transverse section on‘the line H'
without the "egg being engaged by one of the , of Figs. 1 and 2 in the direction of the arrows.
15 pusher slats on the endless pusher of the weighing
. \Fig. 4 is a transverse sectionjon the, line 4-4 ll
- machine.
of Fig._ lgin the‘ direction, of the arrows" showing
Another ,Obiect‘and feature of my invention in a portion of the‘ weighing scalegand part of the
connection with the weighing mechanism is in electrical connections;
,
.
reducing ‘the amount of the drop of the’ egg
‘Fig. 5 ‘is a transverse section on theline 5-5
from the weighing-‘runway to the storage bins.
of Fig. 1 in the direction of the arrows showing,‘
a portion of the dumping track-and distributing
belt with part of the electrical connections.
Fig. 6 is an enlarged side elevation taken in.
Y Further, in substantially requiring the eggs to
beY-removed from- ,the weighing runway by en
"gaging’a moving belt which transfers each egg
on being dumped from the dump track.
25'
1 ’.
the direction of the arrow I showing a portion
important? distinction is that th
dumping Portion of thehtrack operates on a pivot
. Another
of the drive mechanism.
' parallel to‘ the weighingrunway and thus the
"eggs
tudinal direction of movement. . This ‘compre
‘ 35
when his dumped to a distributing belt.
,.
7 ,Another object and featuref’of the present in
_
‘
I
_Flg. 8 is a partial plan taken in the direction
of the arrow 8 of Fig. 7, omitting the feeding
v positing belt, a laterally and downwardly curved . ‘ conveyor.
.7 switching track is utilized to engageeach egg
‘
of the dump track, certain of the parts being in
“dicated, diagrammatically.
‘ ond rail arranged to move downwardly, and. also \
that the eggs are fed to the moving ~'de
-
adjacent the‘transfer position of the feeding
;,conveyor,' the ?rst scale and'the ?rst section
dumped laterallyv insteadof in a longi
hends having one rail- of track fixed and the sec‘
to
\
~’ Fig. ‘Lisan' enlargement of a portion of Pig. 2 '
~~
;
'
Referring?rst to the general construction’ 01’
‘ Figs. 1, 2 and 3, the feed portion of the machine
is designated generally by the numeral II, this
vention resides in the construction of the weigh
ing runway with a depression located beyond
having a series of feed rolls II which move in the
each section of dumping track so. that an egg
ferred at the transfer point M to the main por
tion ii of the egg grading machine. This em 40
ploys a weighing runway Ii in the form- of. a
series of tracks divided into stationary rail sec
40 comesto rest in, this depression and is then
_moved,by a pusher up an inclined section of
the main runway and then released by gravity
direction ~of the arrow IS.
The- eggs are trans
an inclined section to a weighing scale. tions i1, movable track sections I! mounted on'
.- Thus the eggs are,u_ninfluenc_ed by the pusher , scales I8’, dumping-track sections [9 having a
‘ 45
slats .while on‘ the weighing scale.
?xed rail 20, and a tilting rail 2|, and switching
. As regards‘ the control of the dumping trackv or diverting rails 22. The eggs when dumped 45
by the weighing scale having a track thereon, are discharged onto distributing belt type of con
this is somewhat similar to Patent No. 1,728,463 ~veyors designated by the
ly numeral 23,
above mentioned, in principle, but differs in con
from which they are discharged into the storage
structiomand omits a bridging piece between the bin or compartment 24). Thus, by the above
‘end of the scaleand the section of. the dumping mentioned general construction, the eggs are
track." Moreover, the single movable dumping
rail‘iis returned to its position for transferring
fed by the roller conveyor ii, are transferred
at the position it onto the fixed track i‘L'rolled
' eggs by means‘of a retraction spring and is‘theiiv by gravity onto the track it of the scale ll’,
held by a trigger. ‘ This trigger is electrically re {and then by su?jicient weight, cause the opera
leased through a currentinitiated ‘by the weigh
‘tion of the dumping rail 2i toidi'scharge the
ing- scale when depressed by an egg passing there- ’ eggs on’to‘the distributing belt 23\" andthus dis
over. A springgivesthe movable rail a slight , charging‘ into the bins 24.
downward movement prior to an egg resting '
thereon so that the trigger cannot again latch '
‘ The particular set-up of framing, or the like,
for the machine is immaterial, but for the feed
the rail in its initial position. The rail is then‘ ing
portion II I show a frame having side mem
dem'essedv by the weight of an egg which slides bers 25 .and Ii, and a table 21 on which the rolls
laterally'onto the transfer belt.
Another detailed feawre relates to having ~an . or spools I! may travel should it be desired to
rotate the eggs. This roller conveyor has chains
overlap in the ?xed portion of the weighing run
way track and a resilient extension of the, track 2| on oppomte sides in which the rollers are jour-~
on the weighing scale. These are so arranged. naled, these rollers being formed“ with a con
that the weight of the egg is gradually transferred
.
the ?xed track to the track_ on the scale
without an impact on the scale.
' "
= - Another feature of my invention‘ relates to the
.transfer belt'depositing the eggs onto the surface
~»'of_ the bins substantially on the same level or
tracted central neck, thus being somewhat spool-_
shaped. The chains operate over sprockets.”
and 3|. The framing structure for the feeding
mechanism is attached to the frame Ii having, 70'
the weighing scales and track assembly and also
having the. storage bins and distributing belts
'planetbe belt operatng in'a slot in the sur _ mounted therein. This frame utilizes longitudi-é
face" of the
and in order; to prevent eggs nal beams 32 and I3, cross'walls l4, "and an
3
2,112,259 ‘
end wall 86. The ?oor 31 forms the bottom of
when energized, retracts the armature 1| on the
end of the trigger, thus releasing the arm 56 to
the bins on which the eggs are discharged. '
The transfer mechanism at the transfer por- . tilt downwardly when an egg rests on the rails tion of the machine utilizes a tongue 49- having a
‘in slot and screw connection 4| to the table 21 over
which the spools carrying the eggs pass. This
tongue has a pair of prongs 42 with a recess 43
therebetween at its outer end. A bridging piece
44 has a pair of projecting knubs 45 and is resil
iently mounted on a leaf spring 46 which is at
tached at 41 to a cross wall 34. (Note Figs. 1, '7
and 8.) There are a pair of supporting shoul
ders 48 ?xedly secured to the cross wall 34 one on
each side of the bridging piece 44 and the spring
46.
In the action of transferring the eggs which
are each supported on two adjacent rolls or
spools, as the spools pass downwardly at the
‘ end of the tongue 49,, the egg has a downward
movement or roll and engages on the bridging
piece 44, and this being resiliently mounted, may
give slightly under the impact of the egg and
thus reduces the danger 'of the egg breaking.
Should the clearance between the end of the
29 and ‘2|; but as the trigger is released prior to
an egg resting on these rails,’ a leaf spring '12 at
tached to the under side of the beam 32 gives an
initial downward movement of the tilting rail
2| and prevents a relatching of the triggerand
relatching of the arm 56. The arm 56 therefore,
in effect, operates between the two springs 12 10
and 66'. (Note Fig. 5.) The trigger is reset
by a spring 62'.
-
>
The construction of the scaleland the elec-f”
trical connections for energizing the magnet are,
illustrated in connection with Figs. 4 and -"5'. 15
The weighing scale I8’ is mounted on a scale
beam ‘I5 which is illustrated as pivoted at ‘16
substantially below the side beam 32 on bracket
11 secured to this beam. A counter-weight ‘I8 is
mounted on threads 19 of the scale beam and 20
may be adjusted and locked in place by the lock
nut 89. A pendulum weight 8| is suspended by
an arm 82 from the scale beam. The electrical
connections comprise a mercury cup 85 sup
ported by an insulated bracket section 86 de 25
tongue and the bridging piece be insu?icient for
the downward passage of 'a spool, the spool en
gages a‘spring 46 and thrusts this towards the
pending from the beam 33 and the beam 15 has
a pin 81 forming ‘a constant contact with the
cross wall- 34. The roll which immediately fol
lows the egg gives the egg a thrust onto the ?xed
mercury in the cup. A terminal 88 is connected
to the mercury in the cup and from this there is
an electric lead 89, one end of which is con '30
track ll of the weighing runway [6.‘ Immediate
ly before this thrust takes place, the egg is sup
ported on the two prongs 42 and either the knubs
45 of 'the bridging piece which is resiliently
mounted, or the two shoulders 49.
Thus the
egg‘ is supported at four points and is straight
ened by the feeding roll so that its long axis is
directly transverse to the weighing track or run
way |6. When the egg moves out of contact with
the prongs 42 it either has contact with the knubs
45 or the shoulders 48 and thus rolls without a
side twisting on the ?xed track ll of the weighing
runway.
The transfer of ‘the eggs gradually from the
?xed track section IT to the track section l8 on
nected to one end of the electro-magnet winding
coil. The electric circuit through the scale beam
85 employs an angularly bent pin 99 which dips
into a mercury, cup 9| with a plug 93 supported
on a bracket 92 connected to the beam 32. The 35
bracket is insulated but has a terminal 94 in an
electric circuit with the mercury in the cup and
from this terminal there is a lead 95 which con
nects with a source of power 96 and employs a
continuing lead 91 to the other end of the mag 40
net coil. A condenser 98 is connected by leads
99 and I99 to the opposite leads 89 and 95. Thus,
when an egg tilts the scale downwardly, it causes
the ?nger 99 to contact with the mercury in the
the weighing scale [8' is arranged by having the
cup 9| and thus establishes a current which 45
track supported on a ?xedsupport 59 on the
energizes the magnet 79, and as above described,
even should the scale beam swing upwardly and
de-energize the magnet before the egg passes
onto the track section [9 having the ?xed rail
and the tilting rail 2|, the arm 56 cannot become 50
scale and having resilient projecting ends 5!
which are located between the rails of the track
I'I. Moreover, the ?xed track I‘! has a slightly
steeper slope than the movable track l8 so that
the eggs roll by gravity onto the scale and are
discharged at the discharge end 52 of the mov
able track I8 onto the dumping section l9. This
dumping section is arranged by having the ?xed
rail 29 preferably supported on a metal strip 55
secured to the under edge of the longitudinal
beams 32 and 33 and by having the tilting rail
2| mounted on a supporting arm 56 which is
pivoted at 51 to a bracket 58 attached to a side
plate 59 depending from the beam 32. The re
leasing trigger assembly 69 utilizes a bracket 65
secured to the plate 59 and employs a trigger 62
pivoted at 63 to this bracket. This trigger has .
a notch 64 to engage the end of the arm 56 and
has a wedge-shaped tip surface 65. A retraction
spring 69 connects between the arm 56 and the
bracket 6! and provides the main force for
elevating the tilting rail 2| into its latched position. However, a spring 66' secured to the under
side of the beam 32 is engaged by the arm 58
when it tilts downwardly, and after the egg is
released, gives an initial upward impulse to the
arm 56.
_
The trigger is released by an electro-magnet 19
illustrated as mounted on the plate 59, which
latched.
-
The egg is dumped and discharged by the
following mechanism. When the tilting rail 2|
tilts downwardly the end of the egg thus tilts
down and at the same time the switching or
diverting rail 22 which is curved transversely
from the ?xed rail 29 around the end of the
tilting rail 2! brings the lower end of the egg into
contact with the transfer belt 23. This transfer
belt operates over pulleys Hi5 and I96. The 60
pulley I95 has its axle l9'l adjustably mounted
in a journal slot B98 in a bracket I99 connected
to a block H9 attached to the under side of the
?oor 31 of the bin 24. (Note Figs. 3 and 5.) The
other pulley W6 is secured to a shaft HI, such
shaft being journaled in brackets H2 secured to
a block H3 located below the floor 31. Thus
the upper run N4 of the transfer belt which
operates in the direction of the arrow H5 car
ries the eggs in a transverse direction of the
weighing track. When these eggs are dumped
they ‘are slightly retarded by a curtain H6 sus
pended from a bracket l H on the beam 33, which
beam has cut—out sections M8 to allow the eggs
4
2,112,259v
when dumped to pass through such cut-out sec
tions.
v
'
An egg which is too light to actuate the ?rst
the movement of the belt 23 as it passes from
above the ?oor 21 at its upper run to its lower
weighing scale and hence is carried by rolling by
run below the ?oor.
A series of individual bins is provided by uti
gravity on the dumping truck section IS on the
rails 2| and 20 and the ?xed rail I20, rolls into
a retarding or depressed section I2I of the track
lizing ?xed short partition sections I60 located
between each pair of transfer belts, and to
these ?xed sections there are movable partition
formed by the ?xed rails 20 and I20. These
rails have a slight depression illustrated in Figs.
sections I6I pivoted at I62 and having‘ a con
tact end I63 engaging the upper surface :of the
I
10 2 and 7.
A pusher feeder I25 then comes into action
on an egg‘but not until the egg is passed over
the ?rst scale I8’ and the dumping track section
I9. This pusher feeder employs .two endless
floor 31. These partition sections |6I thus pro
vide a space and if desired, the movable-‘sec
tion of the partition may be pressed: sideways
over the de?ecting plates I55 and the upper run
of the transfer belts 23. ‘This movable section
of the partition is to provide accommodation for
chains I26, each passing over a sprocket I21 at
one end and I28 at the other end. These sprock ' an‘increased delivery of eggs by any one of the
ets are mounted on shafts I29 journaled in a transfer belts 23 and to provide for enlarging
frame structure I30 which may be of any suit
or decreasing the size of any individual bin.
1 able character and is mounted on the side beams
_ The drivev mechanism for the various moving
20 132 and 33. Extending between the two chains parts of the machine is as follows, having refer
there are pusher slats I3I, each of which em
ence to Figs. particularly 1 and 6, such drive
ploys preferably a wood strip ‘I32 and a curved
metal plate or pusher strip I33 depending there—
from so that as the lower run of the endless
chains. operates in the direction of the arrow
I34, (note Figs. 2 and '1), the ‘egg retarded in
retarding track section I2I is engaged by a push--.
er slat.
This egg is then pushed upwardly on a
hump track section I40 until it reaches the apex
30
I“, (note Fig. '1), when the egg rolls by gravity
downwardly on the ?xed track section I42 which
is the‘ equivalent of the sloping ?xed track sec
tion I1, from which it rolls by gravity onto the
wire tracks mounted on the second weighing scale
assembly designated by the assembly numeral I 43.
(Note Fig. 1), and if this egg is of sufficient
weight to actuate the scale it is dumped by the
second dumping track section designated by the
assembly numeral I44 of Fig. 1, and is carried
40 sidewise by a second transfer belt.
It is obvious
that I may employ as many scales and tilting and
discharging track sections as are necessary to
secure the desired number of grades or sortings
of eggs in accordance with their weight, but the
use of two of these in the drawings is su?lcient
to illustrate the principle of construction and
operation.
Eggs which are too light to operate any of
the scales and thus form the last series of eggs
50 to be graded are pushed by a pusher slat along
the ?xed track section I45 which extends beyond
the second tilting track I44, and this employs
?xed rails I46 and I41. The rail I46 has a later
ally and downwardly curved section I48, the
end extending downwardly towards the last
transfer belt 23 and the ?xed rail I41 terminat
ing at I49 sufficiently spaced from the curved
rail I48 to permit the egg to tilt downwardly into
contact with the last transfer belt and thus to
60 be moved sideways.
In connection with the transfer belts I em
ployguard strips I50 and I5I, each preferably
being formed of wood slats somewhat triangular
in section as shown in Fig. 2 and secured to
65 the ?oor 31 of the bins 24. Adjacent the dis
charge end of each transfer belt there is a de
?ector plate I55, each plate being attached as
indicated at I56 (note Figs. 1 and 3), to a metal
attaching plate I51 secured to the floor 31.
These de?ecting plates thus extend over the up
per run of each transfer belt 23 and have a di
verting edge I58 which thrusts the eggs sideways
and thus off the belt at the end of its run. This
prevents lodging of the eggs at the end I59 of
75 ‘the slot formed in the floor 31 to accommodate
w
mechanism being designated by the general as
sembly numeral I10. This employs an electric
motor I1I which operates a drive pulley I12
which, by means of a belt I13, actuates a main
pulley I14. This pulley is mounted on a shaft
I 16 which is journaled preferably in the feed por—
tion of the machine and for the sake of con
venience, to the side members 25 of such machine.
The driving sprocket wheels 30 of the spool con
veyor are mounted on a shaft I11_ suitably jour
naled in the sides 25 of the feeding portion of
the machine, and on this shaft and on the por
tion outside of the sides 25 there is a sprocket
wheel I18. An idler sprocket wheel I19 is mount
ed on a stub shaft I80 connected to one of the
sides 25 of the feeding portion of the machine
and a sprocket chain operates over a drive sprock
et I82 on the shaft I16 or connected to the pulley
I14. This chain continues and actuates a
sprocket wheel I83 on one of the shafts I29 of
the pusher feeder I25 and thus actuates the end
less chain I26 of this feeder. ' The direction of
rotation of the various pulleys and sprockets, the
sprocket chain, and the chain of the pusher
feeder is indicated by the arrows in Fig. 6. The
speed of translation of the spool conveyor and
the pusher slat conveyor is so regulated that the
pusher slats of the pusher conveyor I25 move
at a higher rate of speed than the individual
spools but the speed is so regulated and the
pusher slats so positioned that the eggs will be
delivered by the roller conveyor and roll down
wardly by gravity over the ?rst scale, and the
?rst tilting track lodged in the ?rst retarding
or depressed section I 2I of the track before the
pusher slat engages such retarded egg, and also
the speed of the endless chain pusher mechanism
I25 must be such that an egg in rolling by
gravity on the track approaching a scale plat 60
form and over the tracks of a scale will roll
ahead of a slat.
In the operation of the machine, in dumping
eggs the arm 56 which supports the tilting rail
2I may be considered as operating between the 65
springs 12 and 66'. When a weighing scale is
depressed by an egg which is of the proper
weight to cause its action, the trigger is released
as above described, the spring 12 gives an initial
downward impulse to the arm 56 and ‘.the tilting
rail 2I, thus positively moving the arm 56 so that
on return of the trigger under the in?uence of
its return spring 62", such arm 56 cannot be
come latched. When an egg is received at the
’ tilting section of the track composed of the rails
.5
,
.
.
2,119,259
together with atransfer conveyor lo
"and 2|, the tilting rail will swing downwardly.‘ _ laterally
cated below the portion of the runway having
and thus transfer an egg to the transfer belt
23, but in this downward movement of the arm
the ?xed and t?ting rails to transfer an egg on
dumping sideways fromjthe axis ‘of the runway.
5. In an egg grading machine, the combina
tion‘of
a runway for eggs, a weighing scale form
movement to .the arm 56 which is continued by ‘ ing part
of the runway, said runway having a
56 it engages a spring 66' which, as soon as the,
egg is free of the rail 2|, gives an initial upward
the spring 66 until the arm becomes latched by
the‘ trigger 62.
It sometimes occurs‘that
laterally tiltable section tiltable on a pintle lo
cated parallel to the axis of the runway, means
to positively retain said section of the runway in,
two eggs following in -
10 successioncause an actuation of the same scale,
egg transferring position for an egg to roll there- ,
and that therefore, if the tilting rail after dump
means actuated by the scale to release the
ing the ?rst egg, becomes latched, the second egg over,
will be carried over to a further grading device said retaining means whereby the tiltable sec
when it should have been discharged by the ?rst ' tion of the runway may tilt laterally, a transfer ‘ 15
conveyor located below the tiltable section of
15 device. I therefore preferably have the loading the runway at a position to engage an end por- .
end of the tilting rail 2l' overlap the discharge
end of the movable rail It! as indicated at 2|’; tion of an egg when the runway is tilted before
the other end of the egg leaves the said runway
thus the second egg engages the ‘tilting rail be
fore this has time to become latched and'allows and thus gradually. shift the egg from the run .20
way =-to the said conveyor.
_
20 a depression of this rail due to the 'weight of
-6. In an egg grading machine,'the combina
the egg.v It will'be understood that the second
tion of a runway for eggs having a track with a
egg has caused the automatic release of the trig
ger by the electro-mag'net 10, but this trigger pair of rails, one of said rails being ?xed and‘
the other downwardly tiltable on a pivot axis
has not had sufficient time to return to its latch
parallel to the ?xed rail, means to normally retain - 25
25 ing position. However, if the second egg‘ is un
the
?xed rail in egg transferring position,v re
der weight. and does not actuate the scale," the
means for the said‘ retaining means ’
trigger only reacts to the impulse‘ of the first leasing
whereby
the tiltable rail may tilt downwardly
or leading egg of the'two and as sumcient time
and
aswitching
rail positioned to engage an egg
to latch the tilting rail before he second or un
on the downward tilting of the tiltable rail to. 30
30 derweight egg reaches such tilting rail, in which
v
case such underweight egg is carried over to a divert the egg laterally:
7. In an egg grading machine, a ?xed track
further grading part of the machine for lighter '
having a pair of spaced rails with a downward
eggs.
Various changes may be made in the details slope for rolling of eggs by gravity with their
of construction without departing from the spirit long axes transverse tothe track, a weighing
scale having a movable track with a pair of
or scope of the invention as de?ned in the ap
rails thereon, said scale track being’in axial
pended claims.
‘
.
alignment‘_ with the, ?xed track ‘and having a‘
downward
slope for rolling of eggs by gravity,
1. In an egg grading machine, a longitudinally.
the slope of the scale track being slightly less 40.
extending
‘runway
for
eggs,
said
runway
havingv
40
in one section a weighing\scale witha portion of than the slope of the ?xed track, the rails of
the scale track and of the ?xed track overlap
the runway thereon having a downward inclina
tion for eggs to roll by gravity rectilineally over ping whereby the weight of an egg is gradually
transferred from the ?xed track to the scale
the said scale, another section of the runway
adjacent the end of the scale being downwardly
track. a tilting track having a ?xed rail and a 45
tilting rail, an arm supporting the ‘tilting rail
tiltable in a lateral direction as to the axis of
the runway, means to retain thedownwardly tilt > having a pivot parallel to the said latter ?xed‘
able section of the runway in its egg transferring rail, a latching restraining means to retain the
tilting rail in egg transferring position, the said
tiltingtrack being located adjacent the lower end 50
position, means controlled by the actuation of the
scale due to the weight of an egg thereon to re
of the scale track to receive eggs from the scale,‘
lease the tilting section for dumping an egg, the
weight of the egg when on the tilting ‘section
causing such section to discharge an egg later
ally as to the axial direction softhe runway. ‘ ‘
a control means operated by the depression of the ‘
_
,2. In an' egg grading machine as claimed in
claim 1, a transfer conveyor positioned below
the tilting section of the runway and engaging
an egg when the tilting section tilts downwardly
before the egg completely leaves said tilting sec,
60 tion, to remove an egg sideways from the runway.‘
3. In an egg grading machine, the-combina
tion of a runway for eggs having a track with
a pair of ‘rails, one of said rails being fixed and
the other downwardly tiltable, means to normally
latch the tiltable rail to form with the ?xed rail
scale due‘to'the weight of the egg to release the
restraining means for the tilting rail, the tilting
rail being movable downwardly by the weight 55
of an egg and aspring means to return the said 7
arm and the tilting rail to normal position to be
engaged by the
restraining means.
' 8. In an egg grading machine, an egg weighing
scale having a downwardly sloping track mounted‘ 60
thereon, a tilting track having two rails, at least
one of said rails being depressibie, an arm con
nected to the depressible rail and having a pivot‘ '
parallel to the axis of the tilting track, a movable
‘ trigger to normally engage said arm and restrain -
a track for conveying eggs thereover, a control
the arm and the tilting rail from movement, elec-,_,_ >
means actuated by the weight of an egg to release
the tilting rail of the track whereby such rail
may tilt downwardly due to the weight of the egg
trical means controlled by the depression of‘ the.
70 to discharge an egg laterally havingreference to
the axis of the runway.
.
4. In an egg grading machine as claimed in]
claim 3, a switching or diverging-rail positioned
to engage an egg when the tilting rail is tilted
downwardly and thus positively force said egg
scale due to an egg thereon to release the said
trigger, a spring means engaging thesaid arm
to give an initial movement to the said arm and
1.0
tilting rail to prevent reengagement of the trig
ger, a returning spring connected to the arm
yieldable due to the weight of an egg on the tilt
ing rail on the dumping of an egg, the said spring 75
6
2,112,259
returning the said arm into latching relation ing rail and positioned to engage an egg on the
‘with the trigger.
'
‘
‘
downward movement of the tilting rail and to
9. An egg gtading'machine comprising in com
positively feed the egg laterally from the run
bination, a feeding conveyor having an endless
chain with egg supporting spools thereon, an egg
receiving track having a ?xed section with a
downward slope, a resiliently mounted bridging
way:
'
-
" 15. In an egg grading machine, the combinaét
tion of a track. having a pair of rails, one rail
being ?xed the other rail being tiltable, the tilt
able rail being connected to a pivot parallel to
transfer from a spool-to the ?xed track, a mov-J the track, means to normally latch the tiltable
10 able weighing scale having a scale track ttiereon rail in a ?xed position for transference of eggs
to receive eggs rolling by gravity from the ?xed on both the tracks, means to release the latch 10
track, a tilting track having a pair of rails, one for a downward movement of thetilting rail, and
of said rails being depressible, a restraining an endless belt having its upper run moving
means to normally hold the depressible rail in ele
transversely of the track, the upper‘ run being.’
15 vated/ position for transferring eggs thereover; a positioned to engage an egg on tilting of a tilt
releasing means for the said restraining means ing rail and to positively feed the egg transverse
controlled by the scale when depressed due to.__ ly from the track.
vstructure positioned to be engaged by an egg in
the weight of an egg on the-scale, a transverse-l
ly movable transfer conveyor positioned to re
20 oeive an egg when tilted downwardly by the de
pression of the tilting rail and means to return
16. In an egg grading machine, a bin having
a ?oor with a slot, an endless belt having its up
per run closely contiguous to the upper surface
of the floor and having a reverse turn at its dis 2.0
the tilting rail to its normal position after the ‘ charge end at the slot, the upper portion of the
transverse movement oran eggon the transfer belt at the slot being substantially level with the
floor, a de?ector plate secured to the ?oor and
10. An egg grading machine as claimed in extending over the slot'and part of the upper
25
claim 9,..a retarding track section located at the run of the belt, whereby eggs carried by the belt
end of the tilting rail section .to retard an egg, on engaging the de?ector plate are positively dis
conveyor.
1
.
1
-
a pushing conveyor having means to engage an ‘ charged from the belt prior to the eggs reaching
egg located at the retarding section and move an the slot at the reverse turn of the belt, a parti
30 egg longitudinally thereover, a section of track tion structure having a pivoted section with a
‘having'a downwardly and laterally extending ' free end resting, on the ?oor of the bin, the sec 30
35
switching or diverting rail and a second transfer
conveyor located to receive eggs diverted by the
tion between the pivot and the free end being
said switching rail.
of the belt and over the de?ector plate.
7
1'7. In an egg grading machine, a ?xed track '
/
v
-
11. In an egg grading machine, the combina
tion of a runway for, eggs having a trackwith
parallel rails, one rail being ?xed and the other
rail being tiltable, the tiltable rail being piv
oted on a pivot parallel to the axis of the track,
40 means to, normally latch the-tiltable rail in a
adapted to move transversely over the upper run
with a pair of spaced vrails having a downward
slope for rolling eggs by gravity, a movable
weighing scale having a rigid track thereon with
resilient ends extending in longitudinal align
ment with the ?xed track and having a- down
ward slope for the rolling of eggs thereover by 40
gravity, the ?xed track and the resilient ends of
rail and a diverting means to positively engagev the track of the scale overlapping and theresil
an egg rolling on the runway and discharge such ientvends being between the rails of the ?xed
_
.
45 egg laterally.
track ‘whereby eggs .are gradually transferred
12. In an-egg grading machine as claimed in from the ends of the ?xed track to the resilien
stationary position, a- control means to release
the "latch for downward tilting ofithe tiltable
’ claim .11, the diverting means including a divert~
ing rail having one end located adjacent the ?xed
ends of the track on the scale.
-
_
'
18. In an egg grading machine, a ?xed track
rail, said diverting rail- passing transversely having a pair of spaced rails with a downward
slope for rolling of eggs by gravity with their
beyond the end ‘of the tilting rail.
~long axes transverse to the track, va movable
50 across the track below the level of the track and
13. In an egg grading machine as claimed- in weighing scale having a rigid track with a~pair
claim .11,‘ the diverting means including a di
of rails thereon having resilient ends, said scale
vertingrail having one end located adjacent the track being in axial alignment with a ?xed track
?xed rail, said diverting rail passing transversely ' and having a downward slope for rolling of eggs
across the track below the level of the track and by gravity, the slope of the scale track being
beyond the end of the tilting rail, and a trans
slightly less than the ?xed track, the rails of
_ versely moving belt conveyor having its upper the ?xed track and the resilient ends of the
run positioned to engage an egg on the tilting of rails of the scale track overlapping and the re
60 the tiltable rail.
silient ends being between the rails of the ?xed
14. In an egg grading machine as claimed in track whereby the weight of an egg is gradually
claim 11,- a transversely moving belt conveyor transferred from the .?xed to the scale track.
having its upper run positioned below the tilt
WILLIAM CHESTER WYLAND.
50
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