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Патент USA US3068672

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Dec. 18, 1962
3,068,662
C- C. BAUERLEIN
ICE ELEMENT POWERED CUBER
Filed Sept. 23. 1960
3 Sheets-Sheet 1
/
1'0 25
102121014
l
77 79 a a0
Dec. 18, 1962
‘
3,068,662
c. c. BAUERLEIN
ICE ELEMENT POWERED CUBER
Filed Sept. 25. 1960
3 Sheets-Sheet 3
'
37m,
13
15
.41
77 f9 78 so
‘92
.5
Uite states
3,668,662
Patented Dec. 18, 1962
2
1
beneath the ice mold, thereby minimizing power loss and
3,668,662
ICE ELEMENT POWERED QUEER
Carl C. Bauer-lain, Lincolnwood, 111., assignor to The Dole
Valve Company, Morton Grove, 11]., a corporation of
Illinois
Filed Sept. 23, 1%0, Ser. No. 57,963
5 Claims. ((11. 62—353)
This invention relates to automatic ice making devices
of the type which are adapted to be installed Within the
freezing compartments of household refrigerators. More
multiplicity of parts.
A slug valve is associated with the ice making apparatus
which has a volumetrically variable chamber therein
which is communicable with an inlet and an outlet from
the valve. The inlet is connected to a source of water
and has an inlet valve associated therewith. An outlet
valve is also associated with the outlet which serves to
control the ?ow of ?uid from the slug valve chamber to
the ice mold. Actuation of the inlet and outlet valves is
effected by movement of pins connected therewith which
extend exteriorly of the valve body. Movement of these
pins is; in turn, effected by movement of a motion
translation member which has one end engageable with
particularly the invention is directed to an impact ejec
tion type ice making apparatus wherein individual ice
blocks are ejected from their respective molds by a ham
mer blow produced by release of a compression spring 15 the pins and which has an opposite end disposed adjacent
and to a means for cyclicly controlling ?lling of the ice
the temperature sensitive element.
A pivoted lever interconnects the power member of
mold with water to be frozen into ice blocks.
‘ The ice making apparatus hereinafter described in
the temperature sensitive element and the motion trans
lation member so that movement of the motion transla
cludes a frusto-conical shaped ice mold having a side
wall which diverges upwardly and outwardly from the
tion member along its longitudinal axis will be effected
base thereof. At least a portion of the base is movable
and may comprise either a movable diaphragm or an ele
upon axial extensible or retractable movement of the
power member. There is a “lost motion” connection be
ment slidably mounted within the stationary base por
tween the pivoted lever and the motion translation mem
tion. Subsequent to freezing of water within this ice mold,
bers so that during that interval when the power member
the frozen ice block may be ejected or dislodged from 25 is moving extensibly from the element to load the com~
the side wall of the mold by striking the movable base
pressi-on spring which will subsequently be released to
portion of the mold with a hammer-like blow.
effect a hammer-like blow against the movable base of the
The hammer-like blow is imparted to the movable base
ice mold, no movement of the motion translation meme
wall portion of the ice mold by means of a spring urged
her and consequently no actuation of the slug valve, will
hammer. Means are provided to load the spring and to 30 be effected.
thereafter release the spring to effect the hammer blow
An ice level sensing arm is associated with the slug
A temperature sensitive power element is disposed}
below the ice mold and is operable upon extensible move
ment of a power member therefrom to compress a spring
valve which is operable during each ejecting cycle of the
ice making apparatus .to sense the level of ice blocks
within a collection tray. A master switch, operable to
and thereafter effect release of the spring to create the 35 control energization of the entire ice making assembly
is associated with the ice making apparatus which is
hammer blow which is operable to eject an ice block
operated as a function of the rotated position of the ice
from the ice mold.
sensing arm during certain intervals. The master switch
When temperature sensitive elements are employed to
is generally open and only closed subsequent to ejection
control some facet of the operation of an automatic ice
of an ice block from its respective mold to permit further
making apparatus, it has generally been found desirable to
cycling of the apparatus. But closure of the switch is
eifect extensible movement of the power member from
not permitted in those instances when the sensing’ arm
the casing of the element at that time when the water
senses that the ice blocks within the collection tray have
within the ice mold has frozen into an ice block.
reached a predetermined level and when the arm is con
In the ice making apparatus which will hereinafter be
described in detail, I employ -a temperature sensitive ele 45 sequently prevented from returning to its normal level
sensing position.
ment which has its sensing portion disposed in the same
freezing compartment as the ice mold and in proximity
thereto and which contains water within the casing thereof.
An important feature of the present invention is the
provision of an ice mold having a ?exible resilient base
wall. Impact ejection type ice molds heretofore con
A very small amount of alcohol may also be mixed in
with the Water to prevent complete freezing thereof. How 50 structed have employed movable elements slidably
mounted within the base wall of the mold. The pro
ever, assuming that the water within the casing of the
vision of a ?exible base wall which is permanently
element and the water within the ice mold are initially
sealed to the side Wall of the ice mold prevents any
at the same temperature, the water within the two con
?ning bodies will freeze at approximately the same rate; 55 leakage of ?uid therepast and, due to its natural resiliency,
does not necessitate the provision of a separate return
the water within the element cooling at a slightly slower
spring. A hammer button is centrally secured to the
rate due to the slight insulating characteristics of the
?exible diaphragm which serves to receive the hammer
wall of the casing. The power member of the element
will move extensibly from the casing as a result of the
blows and to transmit the same to the ice block within
expansion of the water-alcohol mixture upon freezing 60 the ice mold.
It is therefore a primary object of the present inven
thereof.
tion to provide an improved impact ejection type ice
A resistor heater is wound about the temperature
making apparatus wherein frozen ice blocks are ejected
sensing portion of the element which is energizable to
from their respective molds by an impact shock im
thaw the water-alcohol mixture within the sensing portion
parted to the movable base of the ice mold and where
of the element to reduce its volume and thereby permit
65
retraction of the power member by a return spring. If
the water within the element is initially at a somewhat
in the hammer blow is effected as a function of the tem
perature of ?uid within the ice mold.
A further object of the invention resides in the pro
higher temperature than the water used to ?ll the ice
vision of an improved means for elfecting operation of
mold, then operation of the element will be effected hys
teretically with respect to the freezing of water within the 70 the slug valve as a function of the rate of freezing of
ice mold.
-
The temperature sensitive element is located directly
- water within the ice mold.
Yet another object of the invent-ion resides in the
‘j
I
V
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3,068,662
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7
3
m
for reciprocablemovement within the guide 33 and which
is extensible from the guide upon expansion of the alco
hol-water mixture disposed within the temperature sens
ing portion 37. The guide 33 and power member 38
extend upwardly within the bore 17 and are disposed in
coaxial alignment with the aperture 14.
Unlike the usual type of temperature sensitive power
unit, the power unit which I have devised contains a
substance (water) which is expansible upon cooling. As
wall which is sealed to the side wall of the ice mold.
These and other‘objects of the invention will become
apparent from time to time as the following speci?cation
proceeds and with reference to the accompanying draw
ings, wherein:
‘FIGURE 1 is a vertical sectional view of an ice mak
ing assembly constructed in accordance with the principles
'
,
4
provision of an ice mold for an impact ejection type ice
making apparatus which employs a ?exible resilient base
of the present invention;
,
1O a result, this power unit is particularly suited for use in
FIGURE 2 is an end View of the ice making apparatus
showing the level sensing mechanism in an ice level sens
controlling one or more of the ice harvesting functions
ing position;
in an automatic ice making apparatus.
If the. power unit is disposed with its temperature
FIGURE 3 is a vertical sectional view which is sim
ilar in nature to FIGURE 1 but which shows the disposi
sensitive portion in the same freezing compartment as
the ice mold, the water-alcohol mixture within the power
tion of various parts of the mechanism just prior to spring
release; and
FIGURE 4. is another view which is similar in nature
to FIGURE 1 but which shows the disposition of various
parts of the mechanism as ‘an ice block is being ejected -
from the ice mold.
In the embodiment of the invention illustrated in FIG
URE 1, a mold block 10 is mounted on the insulated
side wall 11 of a freezing compartment 12 of a normal
household refrigerator. The mold block 101s formed of
a block of good thermally conductive material such as.
aluminum or the like and has a frusto~conically shaped
ice mold 13 formed therein which is apertured at the
radially reduced end of the 'frustum as indicated at 14.
In order to facilitate ejection of ice blocks from the ice
mold 13, the side wall of the mold is coated with a ?ne
coating of “Te?on” 15 or the like.
' A bore 17 is formed within the block 10 and is co
axially aligned with the aperture 14 and terminates in an
annular shoulder 18 adjacent the lowermost portion of
unit will freeze and consequently expand at approxi
mately the same rate as water within the ice mold. The
casing of the temperature sensitive portion of the power
unit will, ‘of course, provide some measure of insula
tion. In addition, the mixing of alcohol with the water
will slow down the freezing of the temperature sensitive
substance so that freezing and consequent expansion of
the expansible liquid will be effected hysteretically with
respect to the freezing of water within the ice mold. As
will be pointed out, this feature will assure that the water
within the ice mold is completely frozen prior to the ice
block ejecting cycle.
The hammer 25 is internally bored as at 39 and is
adapted to freely slidably receive the upper end portion
of the power member 38. The power member 38 has
an annular circumferential groove formed therearound
which is adapted to receive the upper end portion of a
spring stirrup 40 to operably connect the stirrup with
the power member so that they will move with one an
other. The spring stirrup 40 ?ts slidably over the outer
surface of the guide portion 33 and terminates in an
the mold .13. An annular recess 19 is formed within the
shoulder 18 which serves to receive the peripheral an
nular bead 20 of a ?exible resilient base wall member or
outwardly extending annular ?ange 41.
diaphragm 21.
and av shoulder 43 is formed intermediate this radially en
A retainer 22 is press titted within the bore 17 and 7
serves to maintain the bead 28 within recess 19 to main!
tain a ?uid tight seal between the periphery of the dia
phragm 21 and the mold block 10. A convex steel but
ton 23 is centrally ?tted to the diaphragm 21 and has an
outer diameter somewhat smaller than the inner diameter
of the aperture 14 so that the button 23 can have relative
movement with respect to the aperture 14, axially there
of.
It may be formed in two sections as shown or may
comprise a pair of half sections bonded to the diaphragm
21; the particular construction thereof being a matter ,
of choice.
.
A hammer 25 is slidably mounted within the bore 17
and has a head 26 which is engageable with the button
23. Swift upward movement of the hammer 25 into
engagement with the button 23 will impart a shock load
to the button 23 and will effect ejection of mice block
from the mold well 13 if the hammer blow carries suf
?cient force.
'
The bore 17 is radially enlarged as indicated at 42
larged portion and the relatively radially reduced por
tion thereof. A spring retainer 44 is seated on the
shoulder 43 and serves to limit the degree of movement
of the hammer 25 and further serves as a seat for one
end of a compression spring 45 which has its opposite
end seated against the outwardly extending annular ?ange
41 of the spring stirrup 44}.
A compression spring 47, having a smaller radius than
the compression spring 45, is also seated on the outwardly
extending annular ?ange 41 and has its opposite end dis
posed in abutment with the lowermost surface of the
hammer .25. The spring 47 is a relatively heavy springv
and is utilized as the ejector spring for effecting ejection
of an ice block from the mold 13. This spring may have
a compressive strength in the magnitude of 65 pounds or
greater. The ejector spring 47 is, therefore, operable
to e?ect the actual ejecting operation while the spring
45 is operable to bias the power member 38 to its most
retracted position with respect to the casing 33.
The side wall of the mold block 10 is apertured at 53
bore 17 having one end disposed. in engagement with an 60
to
receive a detent housing 54 which, inturn, slidably re-.
annular lip 28v of the retainer 22 and having its opposite
ceives a spring urgedrdetent 55. A detent socket 56 is
end abutting the hammer 2S and encircling the hammer
head 26. This spring serves to bias the hammer 25 down ’ formed within the side of thehammer 25 and is adapted
to receive the rounded inner end portion of the detent 55..
wardly within'the borel? and is a relatively light weight
A small compression spring 57 is disposed within the
sprins.
housing 54 and serves to bias the detent 55 to the position
A temperature sensitive power unit 30is mounted
illustrated in FIGURE 1. A plunger 58 having a rounded
on the mold block ‘10 by means of a retaining ring 31"
head 59 is disposed within the detent socket 56 with the
which is snap-?tted within an annular groove 32 formed
rounded end portion thereof normally disposed'in engage
in the casing 33 thereof and which serves to snugly grip’
ment with the rounded inner end portion, of the detent 55.
a plate 34 which is screw-threaded into the mold block
The opposite end of the plunger 58 extends through aj
10' and which lies between the ring and an enlarged an
nular ring 35 formed about the casing 33. The power;
bore 60 formed in the hammer 25 in coaxial alignment
unit 30 includes a temperature sensitive portion 37 which
with the socket 56 and may engage the power member 38.
contains a mixture of water and alcohol, a guide portion
The diameter of the bore 60 is somewhat smaller than the
A compression spring 27 is positioned within the
or casing 33, and a power member 38 which is‘ guided
outer diameter of the head 59 so that this head will limit
8,068,662
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the degree of movement of the plunger 58 toward the cen
.
6
.
a
A passage 85 opens from the chamber '73 and is com
municable through a port 86 with the slug valve outlet 87.
A poppet valve 88 having a stem 89 extending therefrom
through the port 86 to the exterior of the section 70 is
cooperable with the port 86 to control ?uid ?ow there
through and is operable in the same manner as the inlet
valve 79. Upon closure of the inlet valve 79 and a sub
sequent opening of the outlet valve 88, the compression
terofw the bore 39.
The upper end portion of the power member 38 is
chamfered as at 62 and extends upwardly within the bore
39 in free sliding contact with the wall thereof. The
portion of the outer surface of the hammer 25 adjacent
and below the bore 56 is relieved as at 63 so that when
the detent 55 has been moved to the position illustrated
spring 82 will act to move the diaphragm 72 to decrease
in FIGURE 4, the hammer may freely move upwardly
therepast but so that the detent 55 extending inwardly 10 the volumetric capacity of chamber 73 and force ?uid
through the outlet 87 and ?ller spout 87a to the ice mold
from the aperture 53 will limit the degree of axial move
13. In this manner the quantity of ?uid dispensed into
ment of the hammer 25; the detent striking the lip 64 at
the ice mold 13 may be exactly determined.
the lowermost end of the relieved portion 63 or the lip
The pins 80 and 89 are alternately depressed as a func
65 above the bore 56.
" From the foregoing it will be understood that upward 15 tion of the position of the power member 38 through a
motion translation member 90 and an associated operating
movement of the power member 38 from its most re
lever 91 as a function of the position of the power mem
tracted position will act to move the spring stirrup 40 up—
ber 38 relative to the casing 33‘.
wardly and will thereby compress springs 45 and 47. The
detent 55 will be urged by the spring 57 into the bore 56
and will prevent upward movement of the hammer 25
until it is moved out of the bore 56. When the springs
have been compressed nearly to their fullest extent, the
chamfered upper end portion 62 of the power mem
ber 38 will engage the innermost end of the plunger
58 to move that plunger to the right and to thereby 25
The motion translation member 90 is slidably ?tted
within the insulated side wall 11 of the freezing compart
ment 12 and its outermost end portion 92 is engageable
with the pin 80 to effect operation of the inlet poppet
valve 79. The upper surface of the member 90 is en
gageable with the pin 89 and is inclined as at 93 so
that opening and closure of the poppet valves will be
eifected as a function of the relative axial position of the
member 90. It will be noted that portions 92 and 93
of the motion translation member 90 are so con?gurated
and positioned with respect to one another that the valves
79 and 88 can never be opened together. Cross ?ow is
move the detent 55 out of the bore 56. When the detent
.55 moves out of the bore 56 the spring 47 will force the
hammerupwardly to impart a shock load to the button
23 which, in combination with the diaphragm 21, de?nes
the base of the ice mold 13. This shock will act to
forcibly eject an ice block from the mold 13 or will at
least break the bond between the ice block and the side
therefore not possible.
The operating lever 91 is pivotally mounted by means
of a pin 95 to a depending leg 96 which is formed in
tegrally with the plate 34. The operating lever 91 has a
wall ofvthe-moldythe result being dependent upon the
magnitude of the shock load applied.
‘ As shown most clearly in FIGURE 1, the slug valve 69 35 ?rst leg 97 which is received within an aperture 98 formed
which is used for ?lling the ice‘mold 13 comprises gen
verally a two part body including a valve section 70 and
a cap 71. A ?exible diaphragm 72 having a plate 72a
imbedded therein, extends across the interior of a ?uid
chamber 73 formed intermediate the upper and lower
‘sections and has a peripheral bead 74- which is ?tted with
in an annular groove 75 formed on the upper peripheral
edge portion of the section 70. The cap 71 is ?tted on
top of the section 70 to maintain the peripheral bead 74
in the groove 75 and has its edges crimped over the 45
upper‘end portion of section 70 to maintain the various
parts in ?uid tight relation with one another.
in a depending leg 99 extending downwardly from and
formed integrally with the spring stirrup 40. As a result,
axial movement of the spring stirrup 40 will act to'
pivot the lever 91. The lever 91 also has another leg
91a which is angularly disposed with respect to the leg
97 and which has an ontturned ?nger 101a formed thereon
which extends through an elongated aperture 102a formed
in the innermost end of the motion translation member
90. The aperture 102a is considerably longer than the
?nger 101a is wide so that there is a lost motion con-‘
nection between the lever 91 and the member 90.
It will be observed ‘from the positioning of the parts
with respect to one another that when the power member
_ An‘inlet passage 76 is formed within the section 70
which is communicable with an inlet 77 which is adapted
38 is in 'a retracted position with respect to the casing
a reciprocable poppet valve 79 disposed therein which
is operable to control ?uid ?ow therethrough. The valve
90 will be positioned to the right to effect opening of the
outlet poppet valve and closure of the inlet poppet valve
to be connected to a source of pressurized ?uid. A port 50 33, the lever 91 will be disposed in a clockwise rotated
position. When the lever 91 is so disposed, the member
78 communicates the passage 76 with inlet 77 and has
so that the ice mold 13 can be ?lled.
79 has a stem 80 extending through the port 78 which
As the power member 38 moves extensibly from the
casing 33 to compress springs 45 and 47 the lever 91
will be pivoted in a counterclockwise direction. Initial
posite end seated against an annular shoulder, formed
upward movement of the power member 38 will, of
within the connecting nipple for the inlet 77, which is
course, not effect axial movement of the member 90 due
operable to normally bias the poppet valve 79 to a closed
position with respect to the port 78. Depression of the 60 to the lost motion connection between the lever 91 and
member 90 but further upward movement of the power
stem 80 will, however, act to move the valve 79 against
member 38 from the position illustrated in FIGURE 3
the opposing biasing force of spring 81 to open com
will e?ect movement of elements 91 and 90 to a su?‘i
munication between the inlet 77 and the passageway
cient degree to open the inlet valve 79. This action will,
76 to permit ?uid to flow into the chamber 73.
A compression spring 82 is ?tted within the chamber 65 of course, take place almost simultaneously with ice block
ejection.
formed between the diaphragm 72 and the cap 71 which
Energization of the ice making assembly as a function
has one end seated against the cap and its opposite end
of the level of ejected ice blocks'is effected by means
seated against the diaphragm to normally bias the di-,
of an ice level sensing arm 100. The arm 100 is con
aphragrn 72 to the position illustrated in FIGURE 1.
Upon opening of the inlet valve 79, ?uid under 70 nected to and extends radially from one end of a shaft
101 which is journalled for rotatable movement within the
pressure will move through the passage 76 into the
insulated side wall 11. A lever 102 has a ?rst leg 103
chamber 73 and, assuming that the fluid is under normal
extending therefrom which is shown in FIGURE 2 as
household pressures, it will effect compression of the
lying adjacent the snap lever 104 of a well known type
spring 82 to thereby enlarge the volumetric capacity of
?uid chamber 73.
75 of snap action switch 105 'which is mounted on the outer
extends exteriorly of section 70. A compression spring
81 has one end seated against the valve 79 and its op
55
3,068,662
wall of the slug valve 69. A second leg 107 is formed
integrally with but is different from the leg 103 and ex-V
tends in an opposite direction therefrom.
.
. Another lever 108 is freely mounted on the shaft 101
8
and deenergization of the resistor heater 120, will be
effected.
It will be understood that this embodiment of the inven
tion has been used for illustrative purposes only and that
various modi?cations and variations in the present inven
tion may be effective without departing from the spirit
for relative rotation with respect thereto. This lever has
a leg 109 extending therefrom which is connected, through
a tension spring 110 with the leg 107. The lever 108 also
and scope of the novel concepts thereof.
has an outturned detent 112 formed integrally therewith
I claim as my invention:
which in engageable with the leg 103 so that counterclock
1. An ice making apparatus comprising an ice mold
Wies rotation of the lever 108 will effect similar rotation 10 having a base and having a movable element de?ning
of the lever 102.
a
An outturned arm 113 of the lever 108 is pivotally se
cured to the upermost end of a rod 114 which, in turn,
extends upwardly from the diaphragm 72 through the
upper section 71 of the slug valve 69.
Thus, upward movement of the diaphragm 72 will act
through the rod 114 to pivot the lever 108 in a clockwise
direction and such pivotal movement of that lever will
act through the tension spring 110 to similarly pivot the
at least a portion of the base thereof, a rectilinearly
movable power member coaXially aligned with said base
and movable relative thereto to strike said element to
dislodge an ice block from said mold, valve means for
?lling said ice mold with water upon actuation thereof,
a motion translation member cooperable with said valve
means, the relative position of' said motion translation
member with respect to said valve means controlling actu
ation of said valve means, a stirrup connected to said
lever 102 and the sensing arm 100 connected therewith 20 power member and axially movable therewith, a pivoted
in a clockwise direction.’ Assuming that the path of
leg engageable with said motion translation member for
pivotal movement of the sensing arm 100 is unobstructed
positioning the latter, and a second leg connected to said
the arm and lever 102 will pivot to the positions illus
?rst-mentioned leg and engageable with said stirrup for
trated in FIGURE 2 and therleg 103 will contact the snap
effecting pivotal movement of said ?rst-mentioned leg as
lever 104 of the switch 105 to energize that switch or 25 a function of the position of said power member rela
close a circuit therethrough. Snap action switches of the
tive to said base.
type illustrated in FIGURE 2 are quite well known in the
2. An ice making apparatus comprising an ice mold
art and it is sul?cient to state that the switch is normally
having a base and having a movable element de?ning
in an open circuit position and that depression of the snap
at least a portion of the base thereof, a rectilinearly
lever 104 in the foregoing manner will effect closure of 30 movable power member coaxially aligned with said base
the switch.
.
and movable relative thereto to strike said element to
It will be observed, however, that if a complete pivotal
dislodge an ice block from said mold, valve means for
stroke of the sensing arm 100 is prevented due to a high
?lling said ice mold with water upon actuation thereof,
level of ice thereunder the leg 103 will not move into
a motion translation member cooperable with said valve
contact with the snap lever 104 and closure of the circuit
means, the relative position of said motion translation
therethrough will not be effected.
member with respect to said valve means controlling actu
' It willrnow be understood that if a resistor heater is
ation of said valve means, a pivoted lever engageable
associated with the temperature sensitive. portion 37 of
with said motion translation member for positioning the
the power unit 30 and this heater is energized only upon
latter, and means directly connected to said power memw
closure of a circuit through the switch 105, the operation 40 ber and continuously movable therewith for pivoting said
of the entire ice making assembly will be eifected as a
lever as a function of the position of said power mem
ber relative to said base.
i
function of the level of ice beneath the sensing arm 100.
Thus, if a, collection tray is disposed beneath the mold
3. An ice making apparatus comprising an ice mold
blockll) to collect ice blocks ejected from the mold
having a base and having a movable element de?ning at
Well. 13 vand the ice blocks within that tray are disposed 45 least a portion of the base thereof, a rectilinearly mov
in the path of movementrof the sensing arm 100 when
able power member coaxially aligned with said base and
they have reached a predetermined level. therein, fur
movable relative thereto to strike said element to dis-v
‘ther cycling of the ice making apparatus after the sensing
lodge an ice block from said mold, valve means for
arm 10!) has contacted this high level of ice will be
fore described, the power member 38 will not be moved '
?lling said ice mold With water upon actuation thereof,
a motion translation member cooperable with said valve
means, the relative position of said motion translation
member with respect to said valve means controlling
actuation of said ‘valve means, a pivoted lever engage
able with said motion translation member for positioning
the latter, and means connecting said lever with said
power member and movable therewith for pivoting said
retractably with respect to the casing 33 so that the slug
valve inlet 76 will remain open but further cycling of
ber relative to said base.
prevented.
The power member 38 will be in an extended
position with respect to, the casing 33 when the expan
sible material within the sensing portion 37 is frozen
or-nearly frozen after an ice block has been ejected. If
energization of a resistor heater 120, wound about the
sensing portion 37, is prevented in the manner hereto
lever. as a function of the position of said power mem
the apparatus will not be permitted.
4. An ice making apparatus comprising an ice mold
Upon removal of the obstruction in the path of piv- 60
, having a base and having a, movable element de?ning at
,otal‘movement of the sensing arm 100, energization of
least a portion of the base thereof, a rectilinearly mov
the resistor heater 120 will be effected and the power
able power member coaxially'aligned with said base and
member 38 will move retractably with respect to the
movable relative thereto to strike said element to dis
casing 33 and such movement will act through members 65 lodge an ice block from said mold, valve means for
90 and 91 to close the slug valve inlet 76 and open'the
?lling said ice mold with water upon actuation thereto,
:slug valve outlet 87 to initiate another cycle of oper-,'
a motion translation member cooperable with said valve
means, the relative position of said motion translation
course, permit the diaphragm 72 to be moved down
member with respect to said. valve means controlling
wardly' to decrease the volumetric capacity of chamber '70 actuation, of said valve means, means connected to said
.ation. Opening oflthe slug valve outlet 87"will, of
73 and such movement will act through the rod 114
to pivot the lever 108 and consequently lever 102 and
sensing arm. 100, in a, counterclockwise direction. Such
counterclockwise, movement of the lever 102 will move
the leg 1.03 out. Of engagement with the snap lever 104
power member and axially movable therewith, a pivoted
leg engageable'with said motion translation member for
positioning the latter, and a second leg connected to said
?rstementioned ‘leg and engageable with said power mem
ber connecting means for effecting pivotal movement of
3,068,662
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said ?rst-mentioned leg as a function of the position of
said power member relative to said base.
5. An ice making apparatus comprising an ice mold
for containing water to be frozen into ice blocks and
having a resilient base wall, nonresilient abutment means
centrally secured to said resilient base wall, means for
freezing Water within said ice mold, power means engage
able with said abutment means for hammering same to
effect ice block ejecting movement thereof, valve means
for ?lling said ice mold with water upon actuation thereof,
a motion translation member cooperable with said valve
means, the relative position of said motion translation
member with respect to said valve means controlling
actuation of said valve means, a pivoted lever engage
able with said motion translation member for position 15
ing the latter, and means connected to said power means
and movable therewith for pivoting said lever as a func
tion of the position of said power means relative to said
abutment means.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,368,181
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Vernet ______________ __ Jan. 30,
Rundell ____________ __ May 31,
Askin ______________ __ Nov. 8,
Hubacher ____________ __ Oct. 23,
‘Miller _______________ __ Jan. 8,
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Chace _______ __'. _____ __ Oct. 8, 1957
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Kennedy ____________ __ May 6, 1958
Bauerlein ____________ __ Jan. 31, 1961
Fink _______________ __ Apr. 25, 1961
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