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Патент USA US2411309

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N°V- 19, 1946.
A. J. WHITCOMB ET AL
2,411,309
LIQUID MEASURING AND DELIVERING MEANS
Filed Jan. 25, 1941
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' INVENTOR.
ArihurJWhifcomb
Gordon Fox
NW- 19, 1946-
A. J. WHITCOMB ETAL
2,411,309
‘LIQUID MEASURING AND DELIVERING MEANS
Filed Jan. 25, 1941
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INVlgNTOR.
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By’
Arthur J. Wlzzfcomb
Gordon Fox’
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ORNEY.
NOV. 19, 1946.
A_ J, wmTCOMB ErAL
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2,411,309
LIQUID MEASURING AND DELIVERING MEANS
Filed Jan. 25, 1941
4 Sheets-Sheet 3
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INVENTOR.
Ari‘hlzr J1 Wlzii‘comb
By
Gardon Fox‘
44701-7 ?-y-mggmfl
NW- 19, 1946-
A. J. WHITCOMB El'AL
2,411,309
LIQUID MEASURING AND DELIVERING MEANS
Filed Jan. 25, 1941
4 Sheets-Sheet 4
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INVENTOR.
Art/zurJ. W'l'zitcomb
BY
Gordon F0):
Patented Nov. 19, 1946
2,411,309
‘ .UNITED STATES PATENT OFFICE
LIQUID MEASURING AND DELIVERY MEAN
Arthur J. Whitcomb and Gordon Fox, Chicago,
111., assignors to Freyn Engineering Company,
Chicago, 111., a corporation of Maine ‘
Application January 25, 1941, Serial No. 375,910
17 Claims. (01. 226-107)
1
The present invention relates to improvements
in liquid measuring and delivery means.
The present invention will be described in con
nection with means for supplying measured
amounts of water to the skip tubs of a blast fur
nace, though as the description proceeds it will
be clear that the invention has a broader appli
cation.
2
pit in a ‘position to receive material from a scale
car or the like (not illustrated). The skip tub H,
which is illustrated in dotted lines, will, of course,
be adjacent to the top‘ of the furnace when the
skip tub in’ is in the position shown. Alterna
tively, the skip tub l0 will be adjacent to the
top of the furnace when the skip tub II is in
the position illustrated.
An object of the present invention is to pro
The present invention provides mechanism
vide mechanism ‘by means of which measured 10 whereby water or other liquid may be selectively
amounts of water or other liquid may be e?icient
delivered to‘ the skip tub l0 or skip tub 1| when
ly measured and delivered to predetermined po
either of said tubs is ‘in the position illustrated,
sitions.
.
A further object is to provide improved mecha
nism whereby the amounts of liquid to be deliv
ered to different charges may be expeditiously
together with means for selectably controlling
the amount of such liquid delivered to said tubs.
The numeral l2 indicates a tank or‘ reservoir
chamber‘ for water or the like.‘ Mounted at the
measured off and delivered upon the‘happening
top. of said tank I2 is the electrode holder,‘ indi
of predetermined events.
‘
cated as a whole by the numeral l3. ‘Said elec
A further object is to provide a combination
trode holder I 3 is adapted to carry a plurality
of blast furnace skip hoist and liquid measuring 20 of electrodes (not illustrated in Figure 1), which
and delivering means whereby measured amounts
may be individually‘ positioned to extend down
of liquid may be expeditiously delivered to ‘the
into the tank 12 to predetermined selectable po
skip tubs of the hoist.
'
.,
sitions... Connected‘ to the bottom of the tank [2
@A further object is to provide means, in a com
is the elbow connection M, which leads to the,
bination such as referred to above, whereby dif 25 pipe l5. Said pipe [5 is provided with the branch
ferent measured quantities of liquid can be read
pipes l6,‘ l7 and I8, which are connected, respec
ily selected for delivery to predetermined posi
tively, to the valves I9, 20 and 2|. The valve l9
tions.
may be connected to a source of water supply.
A further object is to provide'liquid measur
The valve 20 may be connected to deliver water
ing and delivering mechanism which is simple in 30 to the ‘left-hand skip tub II when said tub II is
construction and eiiective in service.
‘
in the skip pit. The valve 2! may be connected
A further object is to provide means for meas
to ‘deliver liquid to the skip tub II! when said
uring and delivering water or the like well adapt
tub lil‘is in‘ the pit (position illustrated in full
ed to meet the needs of commercial service.
‘lines in Figure 1). Referring to Figure 1, limit
Further objects will appear as the description
switch LT associated with the left-hand skip tub
proceeds.‘
H is moved to closed position when the corre
Referring to the drawings
sponding skip tub H is in its loading position in
Figure 1 is a diagrammatic view of part of a
the skip pit. The full line position of the limit
skip hoist structure having water measuring and
switch LT is the open position of said switch,
delivering means associated therewith embodying 40 which open position is taken when said left skip
the principles of the present invention;
tub H is not in its loading position in the skip
Figure 2 is a diagrammatic view illustrating
pit. The limit switch RT associated with the
the relative positions of the valves forming part
right skip tub I0 is shown in full lines in its closed
of the structure illustrated in Figure 1;
position, having been moved to closed position
Figure 3 is a wiring diagram of the electrical -‘ h by said right skip tub it when said skip tub has
connections of the mechanism illustrated in Fig
moved‘ to its loading position in the skip pit. The
ure 1; and
.
dotted line position of the limit switch RT indi
Figure 4 is amodi?ed wiring diagram which is
cates the open position of said switch, which open
the electrical equivalent of the wiring diagram
position is taken when the right skip tub I!) is
appearing in Figure 3 but embodies electrical 50 not in its loading position in‘the skip tub.
symbols of a di?erent type.‘
‘
Referring ?rst to Figure 1, the numerals l0
and II illustrate two skip tubs such as ordinarily
provided in blast furnace installations. The skip
tub I6, which is shown in full lines, is in the skip 55..
The mechanism for moving the skip tubs l0
‘and H is not illustrated“ As is well known to
those familiar with blast furnace practice, the
skip tubs l0 and II will be connected to the two
ends of a cable, which, by means of a drum or
2,411,309
3
other hoisting mechanism (not illustrated), will
hoist said skip tubs alternately. When one of
said skip tubs is up at the top of the blast fur
nace, the other is down in loading position in
the skip pit and is then adapted to receive ma
terials and water. Said skip tubs, of course,
travel on diiferent parallel tracks. As well un_>
4
which will be referred to presently. Each of the
wires 28, 29 and 30 is connected to a terminal of
the three-phase motor through a switch BS. The
three switches RS are biased to open position but
are adapted to be closed upon energization of the
coil BC, the connections of which will be referred
to presently. With switches FS—FS--FS in
closed position while switches RS-RS-RS are
open, the motor 26 will be caused to rotate in
derstood by those skilled in the blast furnace art,‘
each skip tub 9 and ID has its own independent
course of travel along lines indicated by the nu- . 10 one direction, whereas with switches FS—FS—FS
' in open position with switches RS—RS—RS
merals lilo and Ila respectively.
closed, said motor 25 will be caused to rotate in
The three valves I9, 20 and 2| may be operated
in unison, and for this purpose said three valves
the opposite direction. The set of switches FS
and the set of switches RS are mechanically in_
terlocked so that when one set of switches closes,
the closure of the other set of switches is pre
are connected by sprocket chains 22, .23v and 24,
respectively, to a sprocket wheel 25 adapted to ‘be 15
driven by the motor 26. The motor 26 through
the shaft 26a also drives the drum controller 21.
For purposes of convenience and simplicity of
disclosure the member 21 has been illustrated as
a drum switch or drum controller. As well known 20
to those skilled in the art, a cam switch and’ a
drum'switch. or drum controller are mechanical
vented.
Said motor 26, as mentioned above, is adapted
to drive the member 21-. Said member is illus
trated as having four positions, indicated, re
- spectively, as the minus 90° position, in which
liquid is discharged to the left skip tub; the zero
position, in which water is delivered to the tank
52'; the plus 90° position, in which the tank is'full;
and the plus 180° position, in which water is
discharged from the tank l2 to the right-hand
drum switch or drum controller. The motor 26
skip tub. Said member 21 is adapted to control
positively drives the moving parts of the valves
the bridging and unbridging of a plurality of
I9, 20 and 2|, and said motor 26 also positively
pairs of contacts, indicated by the letters A, B,
drives the member 21. Therefore there is a de?
F. The mechanism of the member 21
nite relationship between __the positions of the 30 C, D,
need not be described in detail. It will be sul?
moving parts of. said valves and they contacts re
cient to state that the arrows appearing upon
sponsive'to the angularposition of the member
the development of the drum 21 in Figure 3 indi
cate the relative movement of the'corresponding
' The member 21, in combination with a start
pairs of} contacts A, 'B, C, D, E and F along the
button or the like and switch means, to be re
segments indicated in solid black in said ?gure,
ferredto presently, cooperates in the control of
which segments are’ indicated by the characters
and responds to the operation of the motor 26
to'position the valves H], 20 and 2|. The mem
Connected across the wires 28 and 3|) of the
ber 21 has certain alternative rotative positions
which control the positioning of the .valves I9, 20 40 three-phase systern- is a circuit including the
switch ERl, biased‘ to open position, the start
and 2|‘ in the manner illustrated diagrammati
switch S, biased to open position, the pair of con
cally in Figure 2, from which it will be noted that
tacts A and the operating coil WC. Said operat
in the plus 90° position'all three valves are closed.
ing coil WC is part oia relay which includes the a
This positioning of the valves will be had when
the tank. |2 is full. In the minus 90° position of ‘ ' switch WCl biased to open position, the switch
WC2 biased to open position, and the switch WC3
the controller 21 the valve 20 is open, whereby
biased to open position. The switch WCI is in
liquid may be delivered from the tank to the
bridging relationship with the circuit which in
left-hand skip tub II. In the zero position of
equivalents, and it will doubtless be preferred by
many using the present invention to use a mod
ern‘ cam switch in place of the old-fashioned
21.‘
.
-
,
"
'
'
A|,B|,C|,D=|,E|andFl.
the cam limit switch, 21 the valve I9 is open to
the‘source of liquid supply, at which time the
tank I2 will be ?lling with liquid. At this time
the valves 20 and Ziare closed. In the next
position of the valves, which is‘ the plus 90° posi
tion above referred to, all valves are closed, at
which time the tank I2 is' full.
In the next po- '
sition of the valves, indicated as the plus180°
position, the valves l9 and 20 are closed and the
valve 2| is in position to deliver liquid from the
tank I2 to the right-hand skip tub ID. The next
position corresponds to the zero position of the
controller 21, as above referred to, in which po
sition the valve I9 is open to permit the ?lling
vof the tank l2, whereas the connections to the
two skip tubs are closed.
,
By reference to Figure 3 it will be noted that 65
the motor .26 is ‘illustrated as a vthree-phase mo
tor, the three terminals of which are connected,
respectively, to ‘the three wires 28, 2.9 and 30,
each protected by afuse 32a. >Two of the wires
of the three~phase system are providedawith the
operating coils OLC of an overload relay having
the switch OLS. Each of the wires 28, 29 and
30 is provided with 'a switch FS, each biased to
open position but all adapted to be closed by the
energization of the coil FC, the connections of
‘
‘
'
cludes the start switch S and the pair of con
tacts A; and completes a holding circuit for said
start switch S after it has been momentarily
closed and allowed to open again. Also connected
across two wires 28 and 30 of the three-phase cir
cuit is the circuit including the limit switch LT
(responsive to the ‘movement of the left-hand
skip tub, being closed when said left-hand skip
tub is in the skip pit) ; the switch WC2 biased to
open position; the pair of contacts B; the coil
RC; and the overload switch OLS, biased to
closed position. Bridged across the circuit which
includes the switch WC2, the pair of contacts B
and the coil RC is a circuit including the switch
E32 biased to closed position, the pairof con
tact‘srC, and the operating coil FC.
'
. ‘
Also connected across the wires 28 and 30 is
the circuit‘ including the switch ER! above re
ferred to, biased to open position, the pair of
contacts D, the operating coil FC and the over_
load switch OLS. Also connected across the wires
28 and 38 is the circuit including the switchRT
biased to open position, the switch WC3 above
referred to, the pair of contacts E, the operating
coil FC and the overload switch OLS. Theswitch
RT is a limit switch and is closed when the right-.
hand skip tub H3 is in the skip pit.
2,411,309
6
‘ A‘further circuit connected across the wires 28
and 3|] includes the limit switch RT biased to
open position, the switch ER3 biased to closed
position, the pair of contacts F, the operating
coil RC and the overload switch OLS. Said limit
switches LT and RT are shown, for purposes of
simplicity, as hatchway limit switches operated
directly by the skip tubs. In practice it probably
closed by the segment BI. When the left-hand
skip tub || reaches the skip pit, the limit switch
LT is closed. Closure of the limit switch LT com
pletes a circuit through the switch WC2, the pair
of contacts B, the coil RC and overload switch
OLS. Energization‘ of the coil RC results in the
closure of the switches RS—RS-RS, causing the
motor 26 to operate in a direction to open the
will be preferred to utilize equivalent contacts
valve 20 to discharge water to the left-hand skip '
associated with the electrical circuits of the hoist 10 tub ||. Operation of the motor 26 in this direc
(not shown) which cause skip tubs l0 and II to
tion moves the controller 21 to the minus 90°
move into and out of the skip pit.
position, wherein the pair of contacts B are
Also connected across the wires 28 and 3B is
opened. ’
the primary coil ERP of the relay ER. The sec
As water is discharged from the tank‘ [2 the
ondary coil ERS of the relay ER is connected to
level thereof ?nally recedes to a point below the
be responsive to the level of water in the tank l2.
electrode selected by the dial switch 36. When
The tank I2 is shown as being provided with the
this happens the circuit of the secondary coil
electrodes 3|, 32, 33, 34 and 35, which extend to
ERS of the relay ER is broken, whereby said re
di?’erent levels in said tank l2. The electrode
lay ER is deenergized, causing the switch ERI to
" 3| has its lower extremity positioned at the level 20 open, breaking the circuit of the coil WC of the ‘
for a full tank. The secondary coil ERS is elec
Water charging relay, whereby the switch WCI is
vtrically connected to the water within the tank I2
opened.
through the wall of the tank and to the electrode
At this time, that is-when the member 21 is
3|.‘ The electrodes 32, 33, 34 and 35 have their
in the minus 90° position, the pair of contacts C
upper extremities connected to a dial switch, 25 are closed by the segment CI and a circuit is
indicated by the numeral 36. By means of the
completed from the wire 28 through the limit
dial switch 35 the various electrodes, 32, 33, 34
switch LT, switch ER2, the pair of contacts C,
and 35; may be selectably connected to the sec
through the coil FC and overload switch OLs to
ondary coil ERS of the relay ER, circuit being
the wire 33. Energization of the coil FC causes
completed through the liquid in the tank I2. The
the closure of the switches FS—FS—FS, causing
switch 36 is connected through the switch ER4,
the motor 25 to operate in a forward direction
biased to Open position, to the secondary coil ERS
and driving the member 21 until the pair of con
‘and to the water in the tank l2. The switch ERI
tacts C‘ are opened. In this position the valve
biased to open position, the switch ER2 biased
I9‘ is open and the valves 20 and 2| are closed,
to closed position, the switch ER3 biased to closed
whereby water will be admitted to ?ll the tank I 2.
position and the switch ER4 biased to open posi
The skip may leave the pit at this point in the
tion are all responsive to the relay ER. The dis
cycle.
closed apparatus includes a plurality of instru
When the water reaches the electrode 3|, in
mentalities which may be grouped as follows:
dicating a full tank, the relay ER is again actu
(a) The drum controller or drum switch 2i 40 ated, thereby opening the switches ER2 and clos
with its corresponding pairs of contacts A, B, C,
ing the switches ERI and EH4. Closing of the
D, E and F;
‘switch EH4 completes a holding circuit for the
(b) The limit switches LT and RT;
relay ER until such time as this holding circuit
(0) The control system for the motor 26 which
is broken by reason of the water falling below
includes the switches FS~FS—-FS, RS—RS-RS, " the lower extremity of the selected electrode 32,
with their operating coils FC and RC; the
33, 34 or 35.
switches WCI, WC2, W03, with their operating
Water will be delivered through the valve I9
coil WC (comprising a relay) ; the switches ERI,
to the tank l2 until it reaches the electrode 3|,
‘ERZ, ER3, ER4, which are a part of relay ER,
completing the circuit of the secondary winding
which relay includes the coils ERP and ERS; and
ERS of the relay ER. Inasmuch as the pair of
(d) The water level detector including the
contacts D are closed when the member 21 is in
electrodes 3|, 32, 33, 34, 35 and the dial switch 36.
the zero degree position, the member 21 will con
In describing the mode of operation of the
tinue to rotate until it reaches the plus 90° posi_
present invention it may be assumed that the
tion. In this movement the valve I19 has been
tank I2 is full of water, which thereby forms an
moved to the off position. At this time, as indi'_
electrical connection with the electrode 3|, com
cated above, the tank is full.
I
pleting the electrical circuit of the secondary
By closure of the start switch S the contacts
winding ERS of the relay ER. As indicated here
W02 and W03 will be closed, as indicated'at the
inabove, when the tank is full of water the con_
beginning of the discussion of the mode of oper
troller 27 is in the plus 90° position.
60 ation. Assuming that the left-hand skip tub I |
When the start switch S is closed, a circuit is
is next to reach the skip pit, the operation of
completed through the switch ERI (closed be
the various instrumentalities is carried through as
cause the secondary winding ERS of the relay
described above. On the other hand, assuming
ER‘is energized), and through the pair of con
that the right-hand skip tub I!) is next to reach
tacts A, which are closed by the segment A| when C. U" the skip pit after closure of the start switch S,
“the controller 21 is in the plus 90° position. The
the limit switch RT will be closed. when the
completion of this circuit energizes the water
member 21 is in the‘plus'90° position the pair of
charging coil WC, which closes the switch WCI,
contacts E are closed by the segment El, and
thereby establishing a maintaining circuit for the
accordingly when the limit switch ET is closed
coil WC after the start switch S has been allowed - O a. circuit is completed from the wire‘28 through
“to open.
the switch RT, switch W03 (closed at this time),
' The energization of the water charging coil WC
the pair of contacts E, operating coil FC and the
causes the closing of the switches WCZ and W03.
overload switch OLS to the wire 30. The energi
At this time, that is-with the controller 21 in‘
zation of the coil FC results ‘in the closure of the
the plus 90° position, the pair of contacts B are
switches FS~—FS—-FS,thereby causing the motor
2,411,309
7
2.6‘ to operate in a direction to open the valve 2|
to, discharge water to the right-hand skip tub H1.
Thismoves the member 21 to the plus 180° posi
tion, wherein the pair of contacts E are opened
and the coil FC is deenergized and the switches
FS-FS-FS- are opened.
'
:As the water is discharged from the tank 52
through the valve 21 to the right-hand skip tub,
the water level falls below the electrode selected
by the dial switch 36. When this happens the 10
relay ER is deenergized, causing the switch ERI
to open.
This results in the deenergization of
the water charging coil WC, opening the switch
‘WCl'.
- 1 The deenergization of the relay ER causes a 15
circuit to be completed from the wire 28, through
the limit switch RT, switch E-R3, the pair of con
tacts F,'operating coil RC and overload switch
v
8
mentioned electrode is contacted by said liquid,
means comprising a holding circuit for said ?rst
mentioned electric circuit when said liquid in said
reservoir falls below the level of said electrodebut
is still in cooperative relationship with said elec
trode means, and motive means for voperating
said valves, said motive means being responsive
to said electrode and electrode means and to the
positions of said receptacles and to the positions
of saidv valves.
,.
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'
a
_
2. In combination, a pair of receptacles each
having its own independent course of travel, a
liquid reservoir, said receptacles being movable
into and out of different loading positions, valve
means for selectably- admitting liquid to said-res
ervoir and for selectably discharging liquid from
said reservoir at different discharge points to said
plurality of receptacles when said receptacles are
in their respective loading positions, single‘ mo
OLS to the wire 38. Energization of the coil
results in the closure of the switches 20 tive means for moving said valve means, control 7
circuits for said motive means, said control cir
RS—RS—RS, causing the motor 26 to operate
cuits including a relay responsive to a relatively
in the reverse direction until the pair of contacts
high level of liquid within said reservoir for caus
F are opened by the segment Fl. At this time
ing operation of said motive means, and a hold
the valve i9 is open, whereby water will be de
livered to the tank 12. rl‘he discharge valves 20 25 ing circuit for said relay for maintaining saidv
relay in operated position until the liquid in said
and 2-1 will be closed at this time. When the
reservoir falls to a predetermined ‘low level, said
water reaches the electrode 3!, which indicates
circuits also including means responsive tothe
a full tank, the relay ER is again actuated, there
RC
positions of said receptacles for, controlling said
by opening the switch ER3 and closing the switch
'
ERI. At this, time ‘the pair of contacts D are 3 0 motive means.
3. In combination, a reservoir, a plurality of V
closed by the segment DI, and a circuit is then
completed from the wire 28, through the switch
ERI, the pair of contacts D, coil FC and overload
switch OLS, to the wire 36. Energization of the
coil FC results in the closure of the forward ‘
receptacles movable into and out of different
loading positions, valve means'for selectably ad
mitting liquid to said reservoir and selectably dis
charging liquid from said reservoir to said recep
tacles when said receptacles are in their respec
tive loading positions, single motive means for
operating said valve means, a start switch for
901° position,’ at'whi‘ch position the circuit is in
said motive means, a holding circuit for said
terrupted at the pair of contacts D.- At this point
the‘ tank i2‘ is full of water and ready for the new 40 start switch, and means conjointly responsive
to the positions of said receptacles and to the
- cycle.
positions of said valve means and to the level
The’ diagram illustrated in Figure 4 is electri
of liquid within said reservoir for control
cally the equivalent of the diagram appearing in
ling said motive means, said means respon
Figure 3; However, the electrical symbols ap
‘ sive to the level of liquid within said reservoir
pearing in Figure 4 may be more familiar to cer
including a relay adapted to be operated when
tain of those skilled in the electrical artsv than
the liquid within said reservoir is at a predeter
are the symbols used in Figure 3, which are
mined high level, and a holding circuit adapted
doubtless more familiar to those particularly con
to maintain said relay in operated position until
cerned with the electrical controls of blast fur
50 said liquid falls to a predetermined lower level.
'naces.
> 4. In combination, a reservoir, an inlet valve to
It will not be necessary to repeat the mode of
said reservoir, a plurality of discharge valves from
operation with particular reference to the dia
said reservoir, a single motive means for operat
gram appearing in Figure 4 inasmuch as the mode
ing said valves to cause said reservoir to be ?lled
of operation has been fullyv described above in con
nection with the diagram appearing in Figure 3. “ up to a predetermined level with liquid or to dis
switches FS—FS~—FS by causing the motor 25
to operate in the forward direction to the plus
Though a preferred embodiment of the present
invention has been described in detail, many
modi?cations will occur to those skilled in the
art. It is intended to cover all such modi?cations
that fall within the scope of the appended claims.
What is claimed is:
1. In combination, a pair of receptacles each
having its own independent course of travel, each
charge selectively through said discharge valves,
electrode means for selectively determining
said predetermined level and the quantity of
liquid discharged through said discharge valves,
a plurality of containers adapted selectively to
be positioned to receive ?uid discharged through
said discharge valves, and switch means respon
sive to the positions of said containers for con
alternately movable into and out of itsrespective
loading position, a reservoir, a valve cooperating
with said reservoir for admitting liquid to said
reservoir and other valves for discharging liquid
from said reservoir selectably to said receptacles
when said receptacles are in charging positions,
trolling the discharging of said liquid through
an electrode in said reservoir adapted to be con
duits, motive means for operating said valves,
switch means driven by said motive means, elec
trode means for detecting a high liquid level and
tacted when said reservoir is ?lled with liquid to
a predetermined maximum amount, electrode
means in said reservoir selectably responsive to
lower levels of liquid in said reservoir, an electric
circuit adapted to be completed when said ?rst
said discharge valves.
1
5. In combination, a liquid reservoir, a valve
for admitting liquid thereto, other valves for dis
Charging‘ liquid therefrom, said other valves hav
ing communication. to different discharge con
a-plurality of lower liquid levels in said reservoir,
and control means responsive to said switch
means and to said electrode means to cause said
9.,
2,411,309
motive means to selectably operate said valves to
discharge liquid in quantities selectably predeter
10
said reservoir selectively to either of‘ said recep
tacles when said receptacles are in their respec
tive loading positions, said valve means providing
mined by said electrode means from said reser
voir to said conduits and thereafter to replenish
four alternative conditions for controlling the
6. In combination, a liquid reservoir, a valve
?ow of liquid, to wit: (1) a shut-off ‘condition
in which no liquid is permitted to ?ow; (2) a
,thequantity of liquid thus discharged.
for admitting liquid thereto, other valves for dis
charging liquid therefrom, said other valves hav
charging condition ‘in which liquid is being
charged into the reservoir; (3) a discharging
condition in which liquid is discharged from the
ing communication to different discharge con
duits, motive means for operating all of said 10 reservoir to one of the receptacles; and (4) a
discharging condition in which liquid is being dis
motive means, electrode means for detecting a
charged from the reservoir to the other of said
high liquid level and a plurality of lower liquid
receptacles; a single motive means for positioning
levels in said reservoir, control means responsive
said valve means, a start switch, a relay respone
to said switch means and to said electrode means
sive to said start switch, a holding circuit respon
to cause said motivejmeans to selectably operate
sive to said relay, and control means for said
said valves to discharge liquid from said reservoir
motive means ccnjointly responsive to the levels
in predetermined quantities to said conduits and
of liquid within said reservoir and to the positions
thereafter to replenish the quantity of liquid thus
at said receptacles and to the positions of said
discharged, a plurality of receptacles each mov 20 valve means and to said relay.
able in its own’ independent course and adapted
11. In combination, a, pair of receptacles each
alternately to be positioned to receive liquid from
having its own independent course of travel, a
one or the other of said conduits, and switch
liquid reservoir, valve means for charging liquid
means responsive to the positions of said recep
into said reservoir and discharging liquid from
tacles to determine from which conduit liquid is 25 said reservoir selectively to either of said recep
to be discharged and to permit such discharge
tacles, a single motive means for positipning said
only when a receptacle is positioned to receive
valve means, control means for said motive means,
liquid from its corresponding conduit.
said control means including start switch means
7. In combination, a reservoir chamber, valve
and a relay responsive to said start switch means,
means for charging liquid into said chamber and
and also including limit switch means responsive
for discharging liquid from said chamber select
to the loading positions of said receptacles where
ably to different discharge regions, a single motive
by liquid from said reservoir may be caused to
means for said valve means, control means for
discharge in response to said relay to either of
said motive means having de?nite positions for
said receptacles upon their arrival in their re
controlling said motive means to position said 35 spective loading positions irrespective of which
valve means, and limiting means responsive to
receptacle has previously received liquid from said
the levels of liquid within said chamber for con
reservoir.
trolling said motive means.
,
12. In combination, a pair of receptacles each
8. In combination, a reservoir, an inlet valve
having its own independent reciprocatory course
to said reservoir, a plurality of discharge valves 40 of travel and each movable into its own respec
from said reservoir, a pair of receptacles adapted
tive loading position, a reservoir having a liquid
to be moved alternately into two different receiv
storing chamber, valve means for controlling the
ing positions to receive liquid respectively from
in?ow of liquid to said chamber and the dis
said discharge valves, switch means adapted to
charge of liquid from said chamber selectably
be actuated by said receptacles, motive means for - I
to either of said receptacles when said recepta
operating said valves to cause said reservoir to
cles are in loading positions, motive means for
be ?lled up to a predetermined level with liquid
said valve means, a start switch for said motive
or to discharge selectively through one or the
means, and electric control means operative after
other of said discharge valves in response to said
said start switch has been closed for controlling
switch means, and control means including elec 50 said motive means to position said valve means to
trode means for selectively determining said pre
discharge liquid from said chamber to one of
determined level and the quantity of liquid dis
said receptacles when said receptacle reaches its
charged through said discharge valves.
respective loading position in an amount select
9. In combination, a reservoir, a valve cooper
able
independently of any amount delivered to
ating with said reservoir for admitting liquid to .
the other of said receptacles and thereafter to
said reservoir, other valves for discharging liq
admit liquid to said reservoir chamber up to a
uid from said reservoir selectably to different
predetermined capacity.
discharge regions, an electrode adapted to be con
13. In combination, a pair of receptacles each
tacted when said reservoir is ?lled with liquid
having its own independent course of travel, a
to a predetermined maximum amount, electrode 60
reservoir chamber, valve means for charging liq
means selectably responsive'to lower levels of
uid into said reservoir chamber and for discharg
liquid in said reservoir, an electric circuit adapted
ing liquid from said reservoir chamber select
to be completed when said ?rst-mentioned elec
‘ ably to said receptacles when said receptacles are
trode is contacted by said liquid, means compris
in their respective loading positions, motive means
ing a holding circuit for said electric circuit when
for positioning said valve means, a start switch
said liquid in said reservoir falls below the level
for said motive means, a relay responsive to said
of said electrode but is still in cooperative rela
start switch, a holding circuit for said relay, elec
tionship with said electrode means, and motive
trode means in said reservoir chamber for de
means for operating said valves, said motive
means being responsive to said electric circuit and 70 termining liquid levels therein, relay means re
said holding circuit.
sponsive to said electrode means, and control
10. In combination, a pair of receptacles each
‘means including said ?rst mentioned relay and
having its own independent course of travel, a
its holding circuit and said relay means for con
valves in unison, switch means driven by said
liquid reservoir, valve means for charging liquid
into said reservoir and discharging liquid from
. trolling said motive means, which control means
75
is conjointly responsive to said electrode means,
11
.
,
,
12
.
I v ‘16,. vIn combination, a pair” of vreceptacleseach
having its own independent course of travel, a
reservoir chamber, valve means for charging
to the positions of said receptacles and to ‘the
positions of said valve means.
14. In combination, a pair of receptacles each
having its own independent course of travel, a
reservoir chamber, valve‘ means for charging
liquid into said reservoir chamber and for dis
charging liquid from said reservoir chamber se
liquid into said chamber and for discharging
liquid from said chamber selectably to said re
ceptacles when said receptacles are in their re
'spective loading positions, motive means for op
erating said valve means, means for controlling
said motive means, said controlling means hav
ing
a plurality of de?nite positions to correspond
10
means for positioning said valve means, a start
to a plurality of de?nite positions of ‘said valve
switch for said motive means, a relay responsive
means, and limiting means responsive to the levels
to said start switch, electrode means in said reser
of liquid within said chamber for controlling said
voir chamber for determining liquid levels there
motive means to e?ect the discharge of select
'in, relay means responsive to said electrode
able amounts of liquid to each of said receptacles
means, and control means including said ?rst . when
it is in its respective loading position inde
mentioned relay and said relay means for con
pendently of the amount of liquid discharged to
trolling said motive means, which control means
the other of said receptacles and to effect the
is conjointly responsive to said electrode means, subsequent re?lling of. liquid in said chamber to
to the positions of said receptacles and to the
a predetermined level.
positions of said valve means.
17. In combination, a pair of receptacles each
15. In combination, a pair of receptacles each
having its own independent course of travel, a
having its own independent course of travel, a
reservoir chamber, valve means for charging
reservoir chamber, valve means for charging liquid
liquid into said chamber and for discharging
into said reservoir chamber and for discharg
liquid
‘from said chamber selectably to said re
ing liquid from said reservoir chamber selectably . ceptacles
when said receptacles are in their re
to ‘said receptacles when said receptacles are in
spective loading positions, motive means for op
their respective loading positions, motive means
erating said valve means, control means for said
for positioning said valve means, a start switch
motive means having de?nite positions for con
for said motive means, a relay responsive to said
lectably to said receptacles when said receptacles
are in their respective loading positions, motive
start ‘switch, electrode means in said reservoir i
chamber for determining liquid levels therein, said
electrode means including an electrode for de
tecting a predetermined high liquid level and a
trolling said motive means to position said valve
means, a start switch for said motive means, limit
ing means responsive to a predetermined high
level of liquid within said chamber and also re
sponsive selectably to a plurality of de?nite lower
of liquid within said chamber for control
lower liquid levels, relay means responsive to 3.3 levels
ling
said
motive means, and means responsive
said" electrode means, and control means includ
to the positions of said receptacles for controlling
ing said ?rst mentioned relay and said relay
said motive means.
means for controlling said motive means, which
ARTHUR J. WHITCOMB.
control ‘means is conjointly responsive to said
‘ plurality of electrodes for detecting a plurality of
‘electrodes, to the positions of said receptacles
and to the positions of said valve means.
40
GORDON‘ FOX.
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