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Патент USA US3078964

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Feb. 26, 1963
3,078,959
T. R. THOMAS
LUBRICANT FEEDING MEANS
Filed Sept. 21, ‘1959
4 Sheets-Sheet 1
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INVENTOR
YZIOMAJ/EF/OMAS.
BY:
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Feb. 26, 1963
1-. R. THOMAS
3,078,959
LUBRICANT FEEDING MEANS
Filed Sept. 21, 1959
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Filed Sept. 21, 1959
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LUBRICANT FEEDING MEANS
Filed Sept. 21, 1959
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United States Patent O?iice
3,078,959
Patented Feb. 26, 1963
1
2
3,ti78,95§
In the drawings wherein like reference characters de-.
note corresponding parts throughout the several views:
LUBREGANT FEEDING MEANS
Thomas R. Thomas, New York, N.Y., assignor to Auto
Research Corporation, Boonton, N.J., a corporation of
Delaware
Filed Sept. 21, 1959, Ser- No. 841,394
11 Claims. (Cl. 184-55)
FIGURE 1 is a front elevational view of one form of
spray unit partly sectioned more clearly to show the in
terior construction thereof, taken upon the line 1—1 of
FIG. 2.
FIG. 2 is an end elevational view of the unit of FIG. 1.
FIG. 3 is a top elevational view of the unit of FIG. 1.
The present invention relates to lubricating systems
FIG. 4 is a transverse horizontal sectional view taken
and it particularly relates to a spray application of cool 10 upon
the line 4—4 of FIG. 1.
ants and lubricants to cutting and grinding operations or
FIG. 5 is a fragmentary transverse vertical sectional
for the application of oil or lubricants to chain gears and
View taken upon the lines 53-45 of FIGS. 2 and 3 of the
other devices to be supplied with lubricant.
head of the apparatus.
It is among the objects of the present invention to pro
FIG. 6 is a transverse sectional View taken upon the
vide a central control unit which will serve to prepare and 15 line 6-6 of FIG. 1.
enable transmission of a spray or mist of a coolant-lubri
FIG. 7 is a transverse vertical offset sectional view
cant composition which may be conveyed to or appliedto
taken upon the line 7-—‘7 of FIG. 3, upon an enlarged
various types of mechanisms and particularly chain gears
at suitable locations remote from the source of the lubri
scale as compared to FIG. 6.
'
FIG. 8 is a transverse vertical sectional view taken upon
20 the line 8-3 of FIG. 3, upon an enlarged scale as com
Another object is to provide a novel system v‘which will
pared to FIG. 6.
'
’
be readily adaptable to a wide variety of types of standard
FIG.
9
is
a
diagrammatic
layout
of
the
?ow‘diagram
water base coolants and which will be readily‘ adapted to
cant.
various types of viscosities of oil and which will permit
remote or adjacent application of a spray of coolant and 25
lubricant in cutting and grinding operations, and to ap
plications to chain gears in a wide variety of mechanical
elements.
Still further objects and advantages will appear in the
showing the flow of liquid and air through the apparatu
of FIGS. 1 to 8.
"
FIG. 10 is a diagrammatic view of an outlet connection
by which a spray is directly applied to a place of grinding
or cutting or to a mechanical element to be lubricated.
PEG. 11 is a diagrammatic layout showing the applica
tion of the control unit or” the present invention to several
‘more detailed description set forth below, it being under 30 spray outlet ?ttings by separate liquid and air outlet tubing
stood, however, that this more detailed description is given
connections.
byway of illustration and explanation only and not by
Referring to FIGS. 1 and 2, there is shown a head A
way of limitation, since various changes therein may be
which carries the body B serving as a reservoir. 'The
made by those skilled in the art without departing from
reservoir B carries a sight glass C.
the scope and spirit of the present invention.
35
The reservoir housing B also carries the moisture sep
In accomplishing the above objects it has been found
arator D and the lower liquid reservoir unit E.
mostgsuitable to provide a central combination air trap
The air cleaner and auxiliary reservoir unit E are pro
and ?lter unit which will receive compressed air from a
vided
with the drain or clean-out plugs F and G. The
standard source and in which there will also be incor
porated a pressure regulator including an air pressure 4.0 unit, as shown in FIGS. 1 and 2, is provided with an
air inlet H and an air outlet 3 and with the liquid out
reduction and liquid pressurizing device to form the spray
let K.
or dispersion of the coolant and/orthe lubricant .or oil
There is an electric conduit connection L (FIG. 3).
for remote application.
The head A is provided with a gauge M and a pressure
regulator
adjustment N associated with a spring pressed
45
ply from a shop source and the feed of such air will be
.1 The central source will receive the compressed air sup
controlled by valve means desirably of a solenoid type
with duplicate tubing lines then conveying the air and'the
liquid from the control unit to the jets from which the
spray is applied to the cutting or grinding operation or to
diaphragm control Valve P (see FIG. 7).
v _
.
The head A is also provided with a solenoid control
valve Q (see FIG. 8).
"
_
The coolant or lubricant ?ller cap R permits ?lling of
'
j '
50 the reservoir B.
the chain gears or other mechanical element.
The
air
?lter
S
(see
FIG.
1)
will
separate
moisture
or
In one embodiment of the invention‘the device has a
undesirable material that flows in through the air inlet
metal or cast head having recesses which receive two
transparent cylinders closed at their bottom ends, one of
which serves as an air cleaner and moisture separator and
vthe other of which serves as a liquid reservoir. The head 55
has a connection for receiving air under pressure and it
has separate air and liquid outlets to feed into the two
H and the coolant ?lter T (see P16. 1) will ?lter out
‘impurities in the coolant or lubricant.
’
Referring to the diagrammatic layout of FIG. 9 the
flow diagram shows the air inlet H supplying air to the
container or moisture separator D which has the ?lter S
and the clean-out plug F.
'pipe system which will lead to places where the coolant
The air will flow as indicated by the arrow on the con
is to be applied.
Each of the outlets desirably has a liquid ?ow adjust 60 duit U to the diaphragm regulator valve arrangement P.
It will then pass to the solenoid control valve arrange
ment and is provided with a concentric or parallel piping
ment Q past the gauge M and it will ?ow into the cham
arrangement by means of which a spray is applied to the
ber V at the top of the reservoir B where it will place
cutting or grinding operation or to the particular machine
elements which it is desired to lubricate and/ or cool. . _
With the foregoing and other objects in view, the in
vention consists of the novel construction, combination
and arrangement of parts as hereinafter more speci?cally
described, and illustrated in the accompanying drawings,
wherein is shown an embodiment of the invention, but it
is to be understood that changes, variations and modi?ca
tions can be resorted to which fall within the scope of the
claims hereunto appended.
the lubricant or coolant in the reservoir B under pres
. sure.
It will then ?ow out through the passageway or outlet J.
The lubricant will pass through the ?lter T and then
through the outlet K.
In the layout of FIG. 9, the cleaned air and the cleaned
lubricant will both ?ow into an external parallel or con
centric'tubing arrangement through the outlets K and J.
'In 'FIG. 10 there is shown a typical remote outlet by
3,078,959
{2
means of which the mist is discharged onto the cutting
or grinding operation or onto the mechanical element.
Referring to FIG. 10, there is shown the typical out
let unit Z having a conduit connection at AA from the
liquid connection K and an air connection BB from the
air connection I of the unit shown in FIGS. 1-8. Thus,
the air and liquid will then flow through the concentric
double tubing unit CC to the spray jet nozzle DD which
will apply the mist or spray directly onto the place where
it is to be applied with the liquid usually being in the
central passageway and the air being in the passageway
surrounding it. The adjustment EE permits regulation
of the liquid flow through the liquid inlet AA.
Referring speci?cally to FIGS. 1 and 2, there is a head
A which is joined to a reservoir casing or housing B by
means of bolted connections such as are indicated at 28,
(see FIGS. 1, 2 and 4).
The gaskets 21 and 22 as indicated in FIG. 5 will seal
the head A in respect to the top of the body B.
4.
the downwardly depending portion 66 of the valve 67
carrying the plastic annular seating ring 68.
This annular member as. will be biased upwards by
the spring 65 to contact the‘ valve seat 69 on the insert
70 which is ?tted into the recessed portion 71.
This element 70 will have the central passage 52 into
which projects the extension 53.
The passageway 51 will establish communication with
the chamber 72 below the diaphragm 54 which is held
10 at its peripheral edge '73 against the shoulder 74 by the
depending circular cylindrical portion 75 of the cup 76
which is threaded into position at 77.
This cup has a central tubular portion 78 which re
ceives the coil spring 57 and also a telescoping sliding
bearing for the upwardly extending cylindrical guide mem
ber 79 extending upwardly and integral with the sti?en
ing plate 55.
The pressure of the spring 57 may be adjusted by the
screw 59 to achieve the desired pressure of air in the
The bottom 23 of the reservoir will have gaskets at 2-4 20 device as it passes from the conduit 49 and the chamber
51 into the chamber 72.
and 25 sealing it to the transparent cylinders 26 and 27
The extension 53 will contact the projection 80 of
which respectively form part of the air separator unit D
the member 66 inside of the annular plastic valve seating
and the lower liquid ?lter unit E.
member 68 to unseat it if the pressure of the air is too
The Vdrainout plugs F and G are mounted upon the
low so as to permit such air to ?ow freely through the
bottom closures 23 and 29 of the cylinders 2d and 27
annular passageway 52 from the chamber 51 into the
(see FIG. 1).
chamber 72.
The air will enter through the connection H from a
However, if the pressure is too high the diaphragm will
suitable air compressor or source of compressed air
which is connected into the tapped opening 34? in the
head.
be moved upwards elevating the projection 53 and per
30 mitting the annulus 68 to seat against the seat 69 cutting
The air will then flow into the dome 31 and into the
space 32 closed by the gasket 21 and down through the
on‘ the ?ow of air until the pressure again drops.
The reciprocating movement of the diaphragm and of
tube 33 which extends as indicated in FIGS. 1 and 5
the valve 68 will assure maintenance of proper air pres
sure in the device throughout operation.
through the entire reservoir and its lower end 34 (see
It will be noted that there is a connection at 81 from
FIG. 1) is sealed by means of the gasket 35 to discharge 35
the chamber 72 to the passageway 82 which connects
the air into the chamber 36 inside of the cylinder 26.
to the threaded nipple 83 of the pressure gauge M.
In this space the air will be held by the upper gasket
The pressure gauge M is mounted through the wall 84
'24 ?tting in the recess 37 and the lower gasket 3% held
of the head A, and terminates at threaded boss 87, see
.in position by the upturned lip 43 of the bottom clos
FIG. 3.
ure 28. .
The gauge M will be accessible through the chamber
The bottom closure 28 is held in position by the in
85 which is covered by the plate 86.
teriorly threaded plug portion 399 which screws onto the
From the chamber~72 the air will ?ow through hole
threaded end 4% of the air tube U.
94 into the annular passageway 95 which is sealed off in
‘ The plug 39 has the knurled head screw 41 so that it
may be opened to remove any water which collects in the 45 side of the cylindrical recess $6 by the upper gasket 97
and the lower gasket §3.
bottom of the chamber 36 which will ?ow through the
The air will then tend to ?ow inwardly through the
opening 42.
radial passageways 99 to the valve past the valve seat
The tube U is encircled by a coil spring 44 which
100 and into the valve seat passage 161. From the valve
presses against the cap 45 which acts as a bottom closure
‘for the ceramic ?lter element S.
50 seat passageway 101 it will ?ow into the vertical bore
182 and then out to the lower radial bores 193 and to
The air ?owing into the chamber 36 will pass into the
the annular passage 104 when it will ?ow through the
?lters and into the opening 46 in the tube U and then
opening 1135 and the passageway 196 into the chamber V.
?ow upwardly (see FIGS. 1 and 5).
The reciprocating valve 107 as seated upon the valve
The upper end 47 of the tube U (see FIG. 5) is '
seat 109 will normally cut oil the supply of air to the
threaded at 48 into the bottom of the head A, and the
air will then ?ow through a transverse passageway 4-9
passageways 102—~1il3——1tl4-106 as shown in FIG. 8.
However, when the armature 168 lifts the valve 197
through action of the solenoid 199 the air may freely
50, in the side of the head A. The air then liows into
?ow from the annular chamber 95 to the annular cham
the chamber 51.
The air then may ?ow through the opening 52 en 60 ber 104 past the valve seat 100.
The armature 108 and the encircling coil 109 are
circling the extension 53 which moves with the dia
positioned in the chamber 110 which is closed by the
phragm 54. The diaphragm 54 has a central stiffening
cap 111 having the lip 112 ?tting in the upper part of
plate 55 with an upturned nipple 56 which receives the
the chamber.
“lower end of the coil spring 57.
'
The armature will be held in position by the cap 113.
The coil spring presses the diaphragm downwardly
The valve 107 actuated by the armature 108 will either
‘against the pressure of the air and the upper end of the
(see also FIGS. 3 and 7) which is blocked by the plug
v coil spring is held against the plate or dish 58.
be seated or unseated to admit air and it Will not have the
62 which receives the hollow nut member 63 at the lower
regulating effect of the pressure regulator N.
The air will then pass into the chamber V which is in
communication with the reservoir B through the open
bottom 125 of the chamber V with the connection being
sealed by the gasket 22. This air will exert a pressure
part of the pressure regulator adjuster N. This nut has
on top of the liquid coolant or lubricant in the reservoir
The amount of pressure exerted by the spring 57_ may
be controlled by the adjustment screw 59 which is held
'by the cap 60.
The portion 61 of the body A has the tapped portion
‘B which will force it through the cylindrical ?lter 126
'spring 65 which encircles and which presses upwardly on 75 in the chamber B (see FIG. 1).
‘a central recess 64 which receives a compressed coil
3,078,959
The ?lter 126 is held between the upper and lower
caps 127 and 128 which are clamped down by the cap
129 and the spring 13%) against the central portion 131.
The ?ltered lubricant or coolant will enter the tube
132 by the opening 133.
The base plate 29 will clamp the cylinder 27 between
the gaskets 25 and 144 in liquid-tight fashion to the
opening 134 in the bottom of the reservoir B by the
6
same may be altered in details and in relative arrange
ment of parts within the scope of the appended claims.
Having now particularly described and ascertained the
nature of the invention, and in what manner the same
is to be performed:
What is claimed is:
1. A central pressure and control unit for supplying
air on one hand and lubricant and coolant liquid on the
drain nut member G.
other hand to a plurality of applicator units, coolant
This drain nut member G is screwed onto the lower 10 liquid and air ?owing through separate lines to said
threaded end 135 of the tube 132 and it will clamp the
applicator units under the same pressure and being ?rst
plate 29 up against the gasket 144 holding the assembly
mixed and applied as a spray at said applicator units,
E in position.
comprising a unit head, a lubricant and coolant reservoir
The lower end of the central bore of the member G
depending from and mounted on the head, cylindrical
is tapped as indicated at 136 to receive the threaded 15 depending chambers from the base of, the reservoir serv
plug 137 having the knurled head member 138.
ing respectively as an air receptacle and a liquid recep
When the member 138 is screwed down until the open
tacle, said liquid receptacle communicating with said
ing 13? is in communication with the lower part of the
reservoir, a conduit system including separate air pres
chamber 140, it will permit any collection of liquid in
sure and coolant inlets and outlets in the unit and hav
the lower part of the tube 132 to be drained out through 20 ing air conduits leading from the air pressure inlet through
the bore 141.
the reservoir to the air receptacle, and from the air re
When the member 133 is screwed up, the beveled
ceptacle to the reservoir and from the reservoir to the
portion 142 will seat against the ridge 143 closing the
air outlet and also having coolant conduits from the
outlet from the chamber 140.
coolant inlet in the liquid receptacle to the coolant out
The reservoir as shown in FIG. 6 has a sight glass C 25 let, said conduit system supplying air under pressure to
to indicate the level therein.
said air receptacle and then to said reservoir and also sup
The sight glass C at its upper and lower ends respec
plying the air and liquid under pressure to outlets car
tively ?ts in the sockets 155 and 156 which receive the
ried by said liquid receptacle to said units.
gaskets 157 and 158.
2. A central pressure and control unit for supplying
The lower end of the sight glass is connected by the 30 air on one hand and lubricant and coolant liquid on the
thimble 159 inserted in the bore 169 into the communi
other hand to a plurality of applicator units, coolant liquid
cating opening 161 of the reservoir B.
and air ?owing through separate lines to said appli
The sight glass C will be held in the recess 162 in
cator units under the same pressure and being ?rst mixed
the front of the reservoir as indicated best in FIG. 1.
and applied as a spray at said applicator units, compris
The upper end of the cylindrical sight glass C will be
ing a unit head, a lubricant and coolant reservoir de
open to the atmosphere through the bored nut 154 which
pending from and mounted on the head, cylindrical de
screws in the tapped opening 163 and clamps the gaskets
pending chambers from the base of the reservoir serving
157 and 158 and the upper and lower ends of the tube
respectively as an air receptacle and a liquid receptacle,
C in position.
said liquid receptacle communicating with said reservoir,
40 a conduit system including separate air pressure and
The tapped opening 163 is closed by the nut 164.
The upper end of the cylindrical sight glass C com
coolant inlets and outlets in the unit and having air
municates with the reservoir through the passageway 165.
conduits leading from the air pressure inlet through the
If it is indicated that additional coolant or lubricant
reservoir to the air receptacle, and from the air recep
should be applied this may conveniently be done through
tacle to the reservoir and from the reservoir to the air
the opening 166 of FIG. 3 to which a ?ller cap R may 45 outlet and also having coolant conduits from the coolant
be applied. The air under pressure will then flow out
inlet in the liquid receptacle to the coolant outlet, said
of the chamber V (see FIG. 5) through the tube J, while
conduit system supplying air under pressure to said air
the coolant or lubricant will ?ow through the passageways
receptacle and then to said reservoir and also supplying
167 and 168 (see also FIG. 5) into the tube K from
the air and liquid under pressure to outlets carried by
whence it will pass into the external conduit system as 50 said liquid receptacle and to said units, said conduit sys
already described in connection with FIGS. 9, 10 and 11.
tem also receiving a pressure regulating unit and a sole
The pipe or tube L enables electrical connections to
noid control valve to allow and cut o? the ?ow from the
be made to the solenoid control valve shown in FIG. 8.
air receptacle to the reservoir.
In the operation the air will be ?ltered by the ceramic
>3. A central pressure and control unit for supplying
?lter S after it has entered by the pipe H and the tube 55 air on one hand and lubricant and coolant liquid on the
34 into the chamber 36.
other hand to a plurality of applicator units, coolant
The coolant and lubricant will also be ?ltered by the
liquid and air ?owing through separate lines to said ap~
?lter T as it ?ows downwardly from the reservoir B
plicator units under the same pressure and being ?rst
inside oi the cylinder E and up through the tube 132.
mixed and applied as a spray at said applicator units, com
This air will then pass through the external conduit 60 prising a unit head, a lubricant and coolant reservoir
system and create a spray of lubricant or coolant upon
depending from and mounted on the head, cylindrical
the application points in and around the machine which
depending chambers item the base of the reservoir serv
ing respectively as an air receptacle and a liquid recep
is to receive coolant or lubricant.
The air pressure will be regulated by the diaphragm
tacle, said liquid receptacle communicating with said
54 and the adjustable spring 57.
65 reservoir, a conduit system including separate air pres—
Air will be cut oit or turned on by the operation of
the solenoid valve Q.
The pressure gauge M will always give an accurate
indication of the pressure in the reservoir B.
sure and coolant inlets and outlets in the unit and hav
ing air conduits leading from the air pressure inlet through
the reservoir to the air receptacle, and from the air re
ceptacle to the reservoir and from the reservoir to the air
The apparatus as shown is particularly designed, for 70 outlet and also having coolant conduits from the coolant
the spray application of coolants, to cutting and grind
inlet in the liquid receptacle to the coolant outlet, said
ing operations or for the application of oil to chains,
conduit system supplying air under pressure to said air
gears and other points to be lubricated.
receptacle and then to said reservoir and also supply
While there has been herein described a preferred
ing the air and liquid under pressure to outlets carried
form of the invention, it should be understood that the
by said liquid receptacle and to said units, and said reser
aorasss
7
8
said reservoir, a conduit system including separate air
voir carrying said receptacles and receiving vertical tubu
‘pressure and coolant inlets and outlets in the unit and
having air conduits leading from the air pressure inlet
through the reservoir to the air receptacle, and from
the air receptacle to the reservoir and from the reservoir
lat conduits extending between the head and the re
ceptacles and forming outlet conduits from said recep
tacles to the head and also to hold and support said
receptacles.
to the air outlet and also having coolant conduits from
the coolant inlet in the liquid receptacle to the coolant
outlet, said conduit system supplying air under pres
4. A central pressure and control unit for supplying
air on one hand and lubricant and coolant liquid on the
other hand to a plurality of applicator units, coolant
liquid and air ?owing through separate lines to said
sure to said air receptacle and then to said reservoir and
applicator units under the same pressure and being ?rst 10 also supplying the air and liquid under pressure to outlets
carried by said liquid receptacle and to said applicator
mixed and applied as a spray at said applicator units, com
units, said unit being provided with a pressure regulator
prising a unit head, a lubricant and coolant reservoir
and a solenoid valve accessible for adjustment at the top
depending from and mounted on the head, cylindrical
of the head.
depending chambers from the base of the reservoir serv
7. In a coolant air pressure distribution system, a
ing respectively as an air receptacle and a liquid recep
central pressure source having a head, a coolant reservoir
having a bottom mounted on and depending from said
tacle, said liquid receptacle communicating with said
reservoir, a conduit system including separate air pres
head and auxiliary air and coolant compartments de
pending from the bottom of said reservoir, separate inlets
sure and coolant inlets and outlets in the unit and hav
ing air conduits leading from the air pressure inlet through
'the reservoir to the air receptacle, and from the air re 20 and outlets in the head for the coolant and air pressure,
an air inlet to said head, a coolant inlet in said head
ceptacle to the reservoir‘ and from the reservoir to the
communicating with said reservoir for ?lling said reser
air outlet and also having coolant conduits from the
voir, an air outlet in said head communicating with said
coolant inlet in the liquid receptacle to the coolant out
reservoir and a coolant outlet in said head, a ?rst con
let, said conduit system supplying air under pressure to
said air receptacle and then to said reservoir and also 25 duit having an inlet and an outlet, said ?rst conduit inlet
being in communi ation with said air inlet, and said ?rst
supplying the air and liquid under pressure to outlets
conduit outlet being in communication with said aux
carried by said liquid receptacle and to said units, said
iliary air comparment, a second conduit having an inlet
receptacles consisting of parallel cylindrical chambers
and an outlet, said second conduit inlet being in com
having central tubular outlet members, the lower parts
of said receptacles receiving drain outlets.
5. A central pressure and control unit for supplying
air on one hand and lubricant and coolant liquid on the
other hand to a plurality of applicator units, coolant
liquid and air ?owing through separate lines to said ap
30
munication with said auxiliary air compartment and said
second conduit outlet being in said head, passageways in
‘said head establishing communication between said sec
ond conduit outlet and said reservoir, a third conduit
having an inlet and an outlet, said third conduit inlet be
35 ing in communication with said auxiliary coolant reser
voir and said third conduit outlet being in communi
cation with said coolant outlet.
8. The source of claim 7, said auxiliary compart
plicator units under the same pressure and being ?rst
mixed and applied as a spray at said applicator units,
comprising a unit head, a lubricant and coolant reservoir
depending from and mounted on the head, cylindrical
ments comprising transparent cylindrical receptacles hav
depending chambers from the base of the reservoir serv
ing respectively as an air receptacle and a liquid recep 40 ing bottom closure caps and cylindrical strainer elements
encircling said second and third conduit inlets so that
tacle, said liquid receptacle communicating with said
‘air and coolant entering said second and third conduits
reservoir, a conduit system including separate air pres
- respectively shall pass through said strainers.
sure and coolant inlets and outlets in the unit and hav
9. The source of claim 7, said head carrying an air
' ing air conduits leading from the air pressure inlet through
the reservoir to the air receptacle, and from the air re 45 pressure regulating valve, a pressure gauge and a solenoid
cut-oft valve in said passageways establishing communi
ceptacle to the reservoir and from the reservoir to the
cation between said second conduit outlct and said reser
air, outlet and also having coolant conduits from the
voir.
coolant inlet in the liquid receptacle to the coolant out
10. The source of claim 7, comprising further drain
let, said conduit system supplying air under pressure to 50
means at the bottom of said auxiliary compartments to
said air receptacle and then to said reservoir and also
drain residue from said compartments.
' supplying the air and liquid under pressure to outlets
11. The source of claim 7, the bottom of said head
' carried by said liquid receptacle and to said units, said
being provided with a recess having a gasket therein for
unit having a single air pressure inlet at one end of the
head and separate air pressure and liquid coolant outlets 55 air and liquid tight connection to said reservoir and the
bottom of said reservoir having recesses with gaskets there
, at the other end of the head.
in for liquid and airtight connections to said compart
6. A central pressure and control unit for supplying
air on one hand and lubricant and coolant liquid on
the other hand to a plurality of applicator units, coolant
liquid and air ?owing through the separate lines to said
, applicator units under the same pressure and being ?rst 60
mixed and applied as a spray at said applicator units,
comprising a unit head, a lubricant and coolant reser
' voir depending from and mounted on the head, cylin
drical depending chambers from the base of the reser
voir serving respectively as an air receptacle and a liquid 65
‘ receptacle, said liquid receptacle communicating with
ments.
'
References Cited in the tile of this patent
UNITED STATES PATENTS
1,990,524
2,730,269
2,865,469
Bystricky ____________ __ Feb. 12, 1935
Earle et a1 ____________ .__ Jan. 10, 1956
Lyden ______________ _.. Dec.'23, 1958
2,868,584
Faust ____ _Q _________ _.. Jan. 13, 1959
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