close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2135563

код для вставки
NOV. 8, 1938.
E_ w_ DAV1$
2,135,563
LUBRICATING APPARATUS
Filed March 11, 1931
3
4 Sheets-Sheet l
gm
1+3175
20
262%
@s
Nov. 8, 1938.
E, wupAvls
2,135,563
LUBRI CATING APPARATUS
Filed March 11, 1931
4 Sheets-Sheet 2
W1»
M Q
raj )776 gm @M. ?
I
my?‘
Nov. 8, 1938.
E. w. DAVIS
2,135,563
LUBRICATING APPARATUS
Filed March 11, 1931
_
4 Sheets-Sheet 3
40
‘110
WIIl!
ll:
III.
____
____
, .a
7
m_
.
T
/
,..|
..
@W
w
.\.
m
w
. __6
a
pay
a
1
m
g1
1
m
m
H
w
1
68%
6
\/\<
//
‘
0
m
9
38
A?) (dial/e3;
19%‘
2¢C 5M g’
@3
Nov. 8, 1938.
E. w. DAVIS
2,135,563
LUBRICATING APPARATUS _
Filed March 11, 1931
2/.
4 Sheets-Sheet 4
(gr/$6525 larpaua's
(By “Ma/n40] 6
Patented Nov. 8, 1938
2,135,563
STTES PATENT QFFlCE
2,135,563
LUBRICATING APPARATUS
Ernest W. Davis, Oak Park, Ill., assignor, by
mesne assignments, to Stewart-Warner Corpo~
ration, Chicago, 111., a corporation of Virginia
Application March 11, 1931, Serial No. 521,748
21 Claims. (Cl. 184-7)
My invention relates to lubricating apparatus
being had to the accompanying drawings, in
and is more particularly concerned with an im
which
_
provement in centralized lubricating systems.
Fig.
1
is
an
elevational
View of my improved
My invention further relates to an improved
lubricating system, showing the pump mechanism
5 pump mechanism for use with a centralized lubri
and a plurality of resistance units of the type
cating system of this type. The lubricating sys
preferably
employed with this system and which
tem of my invention is primarily adapted for
use with industrial machinery having a large
number of bearings to be lubricated, bearings
10 that require lubricant at regular intervals and
in different proportions. To accomplish this pur
pose, resistance units of different sizes are em
ployed at each of the bearings to segregate the
desired amount of lubricant for each respective
15 bearing.
The principal object of my invention is to
provide an improved lubricating system of the
type wherein resistance units are employed at the
bearings to allow the desired amount of lubricant
20 to ?ow to each respective bearing and which are
arranged to allow to each bearing a measured
discharge of lubricant regardless of the viscosity
of the lubricant.
A further object of my invention is to provide
an improved automatic pump mechanism for use
with a lubricating system of this type.
A further object is to provide an improved
automatic pump mechanism having timing means
therein which regulate the duration of the dis
30 charging period of the pump according to the
viscosity of the lubricant.
A further object is to provide an automatic
pump which will discharge the same amount of
lubricant to the bearings regardless of any change
' in temperature which may affect the viscosity of
the oil or regardless of any other reason whereby
the viscosity of the oil is changed.
A further object is to provide an improved
pump of this type capable of forcing lubricant
40 to the bearings for intermittent periods under an
extremely high pressure and relieving the pres
sure in the line during the intervening periods.
A further object is to provide an improved
mechanism of this type having a pair of continu
' ously operating pumps arranged to cooperate to
force lubricant to the resistance units adjacent
the bearings at regular intervals and under an
extremely high pressure.
‘
Still another object of my invention is to pro
vide an improved pump mechanism of this type
which is comparatively simple in construction,
yet extremely rugged and durable, and which
will not easily become out of order.
Other objects and advantages will be more ap
55
parent from the following description, reference
are shown in cross-section;
Fig. 2 is a vertical sectional view of the pump
mechanism, taken on the line 2—2 of Figs. 1 and
Fig. 3 is a vertical sectional view of the pump
mechanism taken on the line 3—3 of Fig. 2, with
the drive pulley omitted which corresponds with
the view taken generally on the staggered line
3—3 of Fig. 4; and
15
Fig. 4 is a. top plan view of the pump mech
anism, with the cover partially broken away to
illustrate more clearly other parts.
In the drawings; in Fig. 1 I have shown a
fragment of a machine l0 which may be of any 20
desirable type of industrial'machine having a
plurality of moving parts and bearings to be
lubricated. A pair of these bearings l2, l2 are
shown in cross-section supporting a pair of hori
zontal shafts l4, It. A combined pump and 2.’;
reservoir unit A is shown mounted in any con
venient place on the machine l0 and securely at
tached thereto by bolts IS.
A lubricant conduit [8 may extend from unit
A to the various bearings upon the machine I0 31»
to be lubricated and terminate in body members
20 and 2| within which the resistance units are
mounted. The resistance units employed in this
system may be of the general type shown in the
application of Charles F. Raisch, ?led August 3.3
26, 1929, and bearing Serial Number 388,332, and
will not be described herein in any great detail.
Generally speaking, these resistance units may
comprise a body 20 having a central axial bore
therein. The lower end of the bore is threaded '40
to receive a resistance plug 24. A sealing mem
ber 26, adapted to cooperate with a bushing 28
to connect the body 20 to conduit I8, is also lo
cated in said bore. The sealing member 26 is
arranged to support a check valve 30. The 45
details of all of these parts are more clearly dis
closed in the above-mentioned application.
The body member 2| is similar in all respects
to the body member 20 except that the body memher 2| carries a member 32 whereby a T connec
tion may be made in the conduit line Ill. The
resistance units, generally speaking, are adapted
to be of the desired size to permit discharge of
lubricant at the desired rate to each particular
0
2
2,188,888
bearing when lubricant under a high pressure is
forced through the conduit line I8.
Referring now more particularly to the unit A,
which comprises a combined ‘pump and reser
voir unit, I provide a hollow base casting 38 hav
ing lugs 38 through which the bolts I8 pass to
secure the unit to the machine I8. An inverted
cup-shaped cap member 48, positioned upon the
top of base 38, effectively closes its upper end
10 and is fastened thereto by means of cap screws
Referring now more particularly to Figs. 2
and 8, a pair of pump mechanisms 44 and 48 are
provided, one of which, 44, is adapted to pump
15 lubricant to the bearings, and the other, 48, is
adapted to pump lubricant vto a control device
hereinafter to be described. Both of the pump
mechanisms are carried by a unitary frame mem
ber 48 which is secured to the under side of
20 cap member 48 by means of bolts 4I.
As most clearly shown in Fig. 3, each pump
unit comprises a plunger 88 engaged by an en
larged stem 52 journailed in a plurality of lateral
?anges 54 and 56 of the frame member 48. The
plunger 58 of pump 44 is re'ciprocated in the ver;
tical bore 58 of a cylinder block 88 which is screw
threadedly mounted in a lower lateral ?ange
82 of the frame 48. A pair of inlet ports 84 in the
cylinder block communicate with bore 58. A
30 spring-pressed valve 88, which normally closes
the lower end of bore 58, is located in an enlarged
chamber 88 in the cylinder block 88 and the
lower end of this chamber is closed by a screw
extends from the cap at one end where a pulley
I I2 is mounted thereon. Pulley I I2 may be driven
by means of a suitable belt I I4 from any rotating
part of the machine I8, such part being deter
mined from the particular construction and lubri
cation requirements of the particular machine
upon which the lubricating‘ unit A may be 10
As most clearly shown in Fig. 2, cam I8‘! is an
eccentric situated above the upper end of plunger
stem 82 of pump 44 and as it rotates, forces
plunger 58 down in bore 88, and spring ‘I9, situ- _
ated between cap ‘I8 and ?ange 82, forces plunger
stem 82 upward and also raises plunger 88 in
bore 88. Pump 48 may be similarly driven. How
ever, in this embodiment of the invention it has
been shown as a gravity operated pump plunger
stem 52 having a disk II5 secured to its top end
and engaged by cam I88.
The cam raises the
plunger stem and permits spring 95, positioned
between ?ange 82 and cap 98 attached to the top
of plunger 58, to raise the plunger in the cylinder 25
block 82. As the cam revolves, disk II 5 drops
from the edge II8 of the cam and urges plunger
58 downward. Means for adjusting the length of
this stroke is provided in the form of a limit stop
member I28 screw-threadedly supported in cover 30
48. The position of the stop member may be
varied by loosening lock nut I22 and inserting
a screw-driver in slot I24 and moving the stop
member up or down.
plug ‘I8.
A conduit "I2 is connected to the cylinder block
88 by a connector bushing ‘I4 through which the
conduit is in communication with chamber 88.
A cap member 18 is attached to the upper end of
plunger 58 on a reduced end thereof and contacts
40 the stem 52. A compression spring ‘I9, arranged
between cap ‘I8 and ?ange 82, holds the plunger
58 in engagement with the enlarged stem 52.
Pump 48 is generally similar to pump 44, be
ing provided, however, with a plunger 58 of a rela
45 tively small diameter which reciprocates in a bore
v88 in cylinder block 82. A slotted opening 84
through one wall of the cylinder block provides
an inlet port to the bore 88 which is closed at
its lower end by a ball check valve 88 located in
50 anenlarged chamber 88 in the lower end of the
block.
These cams are
mounted.
42. .
35
I81 and I88 are provided.
pinned to a drive shaft I89. Shaft I89 is Jour
nalled in a pair of bearings .I I8 in cap 48 and
The cylinder block is screw-threadedly
mounted in a supporting member 98 which has
a reduced end portion adapted to fasten into
a tapped bore 92 in ?ange 82. A conduit 98 is
55 secured in member 98 by a suitable connector
bushing 91 and communicates through passage
way 99 with chamber 88.
A cap member 98 is connected to the upper end
of plunger 58 on a reduced end thereof and con
60 tacts with stem 48. A compression spring 95, ar
ranged between cap 98 and ?ange 82, holds the
plunger 58 in engagement with the lower end of
the enlarged stem 48.
A pair of vertical side walls I88‘ connect ?anges
54 and 82 of the frame 48, leaving more or less
rectangular openings in the frame casting
through which lubricant may reach the pumps
44 and 48. These openings are closed by suit
able strainers I82 which are similar in all respects
70 and preferably comprise a wire mesh screen I84
supported by a pair of rectangular frame mem
bers I85 and fastening screws I88.
Pumps 44 and 48 may be actuated in a number
of different ways, and in the embodiment of the
75 invention shown in the drawings a pair of cams
As previously mentioned, pump 44 will force
lubricant into conduit 12 which extends from
cylinder block 88 to the head member I28 of a
timing device or temporary reservoir I28, being
connected thereto by a suitable connector bushing
I38.
Lubricant discharge conduit I8 extends 40
through a wall of cover 48 and is attached to head
member I28, suitable lock nuts and bushings be
ing provided where the conduit passes through
the wall of cover 48. As thus far described, it
will-be obvious that lubricant under pressure will 45
be continuously pumped to the upper end of the
combined timing or reservoir unit I28.
Pump 48 is connected through conduit 98 with
a lower cap member I32 of reservoir I28 by a suit
able connector bushing I34. A reciprocable pis 50
ton I38 is mounted in reservoir I28 and comprises
generally a cylindrical body member I38 having a
reduced upper end portion I48. An inverted cup
leather washer I42, a retaining member I44, and
an upwardly turned cup leather washer I48, are 55
all mounted upon the reduced end portion I48
which is upset at its upper end to securely fasten
these elements against a shoulder I". A cham
ber I52 in body member I38 is closed‘ at its lower
end by a plug member I58. A valve I54 is posi 60
tioned in chamber I52 and extends upwardly
through an aperture I58 in the upper end of pis
ton I38. The upper end of the valve is hemi
spherically shaped to close an outlet I58 in the
upper Wall of head member I28. Valve I54 has 65
a reduced threaded lower end. I88 upon which a
?anged member I82 is secured. A spring I84 is
carried by the ?anged member I82.
A pipe union I85 is secured between the lower
cap I32 and a body member I88. The member 70
I88 is provided with a vertical bore I 88, the
upper end of which is enlarged and V-threaded
as shown at I18. A tapered wall "I connects
the bores and provides a seat for a gravity oper
ated ball check valve "2. A threaded plug I13, 75
3
2,136,563
arranged at the lower end of a bolt I14 which is
mounted in cap 40, is arranged to be screw
threadedly mounted in the tapped bore I10.
way I'll serves to govern the period of time
during which lubricant is being pumped to the
bearings under high pressure in view of the fact
Bolt I‘I4 carries at its upper end a knurled > that the lubricant in the lower end of reservoir
handle I15 and a lock nut I18. The V-shapecl
I28 allows piston I38 to descend at a rate of
threads III) are arranged to have their pointed
speed governed entirely by the rate of ?ow of the
edges removed so that when plug I13 is screw
lubricant through the spiral passageway I ‘H of
threadedly mounted in the threaded bore a spiral
the resistance unit. With the timing device thus
passageway I‘I'I will be formed between these
provided, it can readily be seen that lubricant
ll pa1't-s.,,_By this arrangement a resistance unit,
of different viscosities may be placed in the reser 10
similar-to those employed at the various bearings, voir A, and with lubricant of any viscosity the
yr
is provided.
The distance that resistance plug I13 is screw
threaded into tapped bore III! will determine the
amount of lubricant of a certain viscosity which
will pass through the timing valve thus provided
in a given period of time. It is obvious that the
higher the viscosity of the lubricant, the more
time will be required for a de?nite quantity of
lubricant to pass through the valve.
In operation, my improved pumping device
may be located upon an industrial machine which
has bearings to be lubricated and which has a
moving element adapted to drive shaft I88 by
means of belt H4 and pulley H2. The two
pumps in reservoir A will thus be continuously
operated through the medium of cams I81 and
I08.
Assuming that the hollow base casting 36 is
?lled with lubricant, it will thus be evident that
pump 44 will pump lubricant through conduit
12 into the upper end of auxiliary reservoir I28
and pump 46 will pump a smaller quantity of
lubricant into the lower end of reservoir I28.
Li Lubricant pumped into the upper end of the
reservoir may escape through opening I58 but
as a lubricant pressure is built up in the lower
end of the reservoir, piston I38 will gradually
be raised until valve I54 closes the outlet I58 in
40 the upper end of the reservoir. At this time
lubricant being pumped through conduit ‘I2 will
be forced out through con‘duit I8 to the various
?ow measuring devices, such, for example, as 20
and ‘2|. Due to the fact that the lubricant is
being pumped under an extremely high pressure,
lubricant will be forced through the resistance
plugs of the units 20 and 2I at a de?nite rate of
travel.
_As the conduit I8 and all of the measuring
units become ?lled with lubricant, the lubricant
pressure in the upper end of reservoir I 28 will
serve to force lubricant through the measuring
units, the pressure gradually being built up to
a point where it is suf?eient to cause piston I38
to descend. Valve I54, however, will remain
seated in opening I58, due to the lubricant pres
sure, until spring I64 engages the-upper end of
chamber I52, and the spring will be compressed
until the lubricant pressure in the upper end
of the chamber is su?iciently great to force valve
I 54 down, at which time, due to the fact that
spring I64 has been compressed, the valve stem
will spring downwardly, thus sharply and quickly
opening port I58, and allow the lubricant to
' over?ow therethrough from the upper end of the
chamber, thus relieving the pressure in the
line I8.
During the period of time in which valve I54
closes opening I58, the lubricant being pumped
into the lower end of reservoir I28 ?ows through
union I65 into the interior of member I66. As
the amount of lubricant increases the lubricant
raises check valve "2 and flows through the
spiral passageway I" of the resistance unit to
75 escape. The rate of flow through the passage
amount of lubricant forced to the bearings by
the pump mechanism will be the same, due to
the fact that by the action of the timing resist
ance unit lubricant of a high viscosity will con
sume a longer period of time in allowing valve
I 54 to open than would be the case with lubricant
of a lower viscosity.
-
Due to this action it is also obvious that, re
gardless of the temperature of the room in which
the machine is operating, the amount of lubri
cant reaching the bearings in di?erent temper
atures will always be the same.
Means in the form of a safety valve must be
provided in conduit ‘I2 to prevent an excessive
high pressure in the conduit line I8 and to this
end a safety valve I80 is provided in the chamber
68 of cylinder 60. The safety valve may com
prise a housing I8I in which a one-way check
valve I 82 is mounted. A cover I83, screw
threadedly mounted on the end of housing I8I,
has an opening I84 therein and serves both as a
seat for spring I85 and a means of escape for the
overflow of lubricant. It will of course be under
stood that this check valve may also be located
in the upper end of reservoir I28.
From the detailed description of the operation
of my improved apparatus, it will be apparent
that a certain sequence of operations will take
place at predetermined timed intervals. First, 40
the pump 44 will operate ineffectively merely to
discharge oil through the outlet port I 58 and
there will be no pressure upon the conduit sys
tem.
Second, when the pump 46 has completely
?lled the lower end of the reservoir of the con
trolling device su?iciently to raise the valve I54
to close the port I58, lubricant will be forced
under pressure to the conduit system and flow
45
through the measuring units at the bearings.
As soon as lubricant is ?owing through these
units and the pressure is built up sufficiently
to force lubricant to flow through the timing re
sistance unit in the reservoir, the controlling
valve assembly I36 will be forced downwardly,
and after a. period of time, governed entirely by
the resistance unit in the reservoir, the assem
bly will open valve I54, thus relieving the pres
sure upon the entire conduit system and allow
ing lubricant to flow through port I58 in the
reservoir.
60
By adjusting the position of member I28 the
length of the stroke of pump plunger 50 of pump
46 may readily be controlled and the frequency
of the high pressure lubrication may readily be
increased or diminished._
>
When the apparatus of my invention is directl .
connected with a normally moving part of a
machine to be lubricated, it will of course be
apparent that the bearings will be supplied with
lubricant in accordance with the speed and time
of operation of the machine.
While I have illustrated and described a speci?c
embodiment of my invention, it will be under
stood that changes and modi?cations may be
made in the details of construction, and I do not 75
4
9,188,588
I
V
wish to be limited to the precise details shown ‘lubricant from said reservoir to said conduit sys
but desire to avail myself or all"ch'a;nges within
the'scope of the appended claims.
I claim as my invention:
1. Lubricating apparatus comprising a. lubri-‘
cant container, a conduit extending therefrom to
hearings to be lubricated, an ‘auxiliary reservoir
mounted in said container, said auxiliary reser
voir having an over?ow opening therein, a piston
in the auxiliary reservoir, means for pumping
lubricant into the reservoir on the lower side of
said piston to move said piston to close said over
?ow opening, means for forcing lubricant through
said auxiliary reservoir into said conduit after
the over?ow opening is closed, and a control unit
associated with said pumping and forcing means
for governing the period during which lubricant
is discharged to said conduit.
'
tem, and means operable periodically to render
said pumping mechanism effective to supply
lubricant under pressure to said conduit system,~
the duration of the e?ective periods oi! operation
being dependent upon the viscosity of the lubri
cant.
i
-
8. A centralized lubricating system adapted to
deliver to each of a plurality of bearings a pre
determined quantity of lubricant regardless of 10
theviscosity thereof, comprising a lubricant res
ervoir, a plurality oi! bearings, conduits extend
ing from said reservoir to said bearings, metering
units adjacent the bearing ends 01' said conduits,
a continuously operating pump in said reservoir,
and means in said reservoir operable independ
ently of the rate of ?ow of lubricant to said
metering units for controlling the duration oi the
2. A pump mechanism comprising a pair of " discharge of said pump into said system in ac
continuously operating pumps, each of said cordance with the viscosity of the lubricant being 20
pumped.
pumps connected with a di?erent end of an aux
iliary lubricant reservoir, a valve in said reser
voir, one or said pumps normally pumping lubri
cant into the lower end of said auxiliary reser
voir to raise said valve to close an over?ow port,
the other continuously discharging lubricant into
an upper chamber in which said over?ow port is
located and when said port is closed to a lubri
cant conduit under high pressure, and means in
cluding a ?ow resistance means associated with
said ?rst pump for controlling the period of dis
charge to the lubricant conduit.
3. A pump mechanism comprising a pair of
continuously operating pumps, each of said pumps
connected with a di?erent end of an auxiliary
lubricant reservoir, a valve in said reservoir, one
9. In a centralized lubricating system having a
' plurality of bearings to be lubricated, a plurality
of resistance units, one associated with each of
the bearings and constructed and arranged for 25
controlling the ?ow of lubricant thereto, a lubri
cant reservoir, conduits extending from said res
ervoir to said resistance units, a continuously
operating pump for transferring lubricant from
said source to said conduit system under pres 30
sure, and means in said reservoir for relieving
the lubricant pressure in said conduit system
after the lubricant has been supplied thereto for
a period determined by the viscosity of the
lubricant.
35
' 10. In a centralized lubricating system includ
ing a plurality of bearings to be lubricated, a
?ow resistance unit mounted at each bearing, a
lubricant reservoir, a conduit extending from
said reservoir to‘ said ?ow resistance units, a 40
pump mechanism in said reservoir and having
its discharge port connected to said conduit, and
means operable independently of the rate of ?ow
through said resistance units and responsive to
and means including a ?ow resistance means
the viscosity of the lubricant in said reservoir 45
associated with said ?rst pump for controlling for controlling the duration of the discharge of
the period of discharge to the lubricant conduit. said pump mechanism into said conduit.
4. A pump for a centralized lubricating sys
11. In a centralized lubricating system hav
tem comprising an oil reservoir, means for eifect- ' inga plurality of bearings to be lubricated, a
ing periodic discharges of oil from said reservoir, flow resistance unit mounted at each bearing, a 50
and means responsive to the viscosity of the oil lubricant reservoir, a conduit extending from
in said reservoir for regulating the frequency of said reservoir to said ?ow resistance units, and
said periodic discharges.
'
v
a pump mechanism constructed and arranged
5. A lubricating system comprising a lubrican periodically to pump lubricant to said bearings
container, periodically operating means for creat
under high pressure, said mechanism including 55
ing intermittent pressure periods in said system, means operable independently of the rate oi’ ?ow
of said pumps normally pumping lubricant into
the lower end of said auxiliary reservoir to raise
said valve to close an over?ow port, the other
continuously discharging lubricant into an upper
chamber in which said over?ow port is located
and when said port is closed to a lubricant con
duit under high pressure, said pump adapted to
open said over?ow port after a period of time,
and means responsive to the viscosity of the lubri
cant in said container for controlling the dura
tion of and intervals between the cycle of opera
tion of said periodically operating means.
of lubricant to said resistance units and respon
.
6. In a lubricating system a unit for e?ecting
the discharge of lubricant from a central reser
voir to the system comprising a pump, a conduit
connecting said pump with the system, a valve
for controlling the discharge of lubricant from
said pump to said system, a lubricant circulating
system operating responsive to the viscosity oi!
the lubricant in the reservoir, and means respon
sive to the differential pressures in said conduit
and said lubricant circulating system for con
trolling said valve.
7. A lubricating system comprising a reservoir,
a conduit system for distributing lubricant to a
plurality or bearings, a continuously operating
pump mechanism for intermittently supplying
sive to the viscosity oi.’ the lubricant to control
the duration of discharge of said pump mecha
nism to 'the bearings.
60
12. A centralized lubricating system adapted
to deliver a measured quantity oi’ vlubricant to
each of a plurality oi’ bearings regardless of the
viscosity of the lubricant, comprising a lubricant
reservoir, a plurality of bearings, conduits ex 65
tending from said reservoir to said bearings, a
?ow resistance unit at each of said bearings, a
continuously operating pump receiving lubricant
from said reservoir, a valve affecting ?ow from
said pump to said bearings, means for opening 70
said valve, said means including a resistance
unit whose e?ect is dependent upon theviscos
ity of the lubricant, and means for closing said
valve.
13. A lubricating system comprising an oil 75
2,135,568
reservoir, an oil line, a plurality of resistance
units associated with said line for apportioning
the lubricant supplied thereto among a plurality
of bearings, continuously operating automatic
means for intermittently discharging oil from
said reservoir to said oil line, and means respon
sive to the viscosity of the oil in said reservoir
for controlling the duration of the periods dur
ing which oil is discharged into said line.
14. A centralized lubricating system including
a plurality of bearings to be lubricated, meter
ing units associated with said bearings for ap
portioning the supply of lubricant among said
bearings in accordance with their respective
[5 requirements, a lubricant reservoir, conduits ex
tending from said reservoir to said metering
units, a continuously operating pump mecha
nism in said reservoir for supplying lubricant
to said metering units at a high pressure, a. valve
for by-passing lubricant from said pumping
5
ing, a branched distribution conduit system
leading to said bearings, a source of lubricant
pressure, means for periodically admitting said
lubricant pressure to said system during oper
ation of the mechanism, and temperature con
trolled means for regulating the duration of the
periods of admission.
18. A central lubricating installation for a
plurality of bearings of a mechanism compris
ing, a branched distribution conduit system lead 10
ing to said bearings, a source of lubricant pres
sure, means for periodically admitting said lu
bricant pressure to said system during operation
of the mechanism, and lubricant viscosity con
trolled means for regulating the duration of the 15
periods oi.’ admission.
‘
19. In lubricating apparatus, a combined pump
and reservoir mechanism comprising, a hollow
base casting, a closure cap therefor, a pump sup
porting frame suspended from said cap, pump 20
mechanism to said reservoir, a second continu
means supported on said frame, a secondary res
ously operating pump, means operated by said
ervoir in said base casting, a conduit extending
from said pump means to said secondary reser
voir, means in said secondary reservoir and oper
ated by lubricant supplied by said pump means
to control the length of the intervals between dis
charges of lubricant from said secondary reser
second pump for closing said valve, and means
dependent upon the viscosity of the lubricant for
determining the length of time said valve is
maintained closed and ‘thereby determining the
period during which lubricant is supplied under
pressure to said metering units.
'
15. A centralized lubricating system including
a plurality of bearings to be lubricated, measur
ing devices associated with said bearings, a cen
tral reservoir, conduits extending from said res
ervoir to said measuring devices, a pumping
mechanisminsaidreservoir, 'said pumping mech
anism operating continuously at a uniform speed
and having means for periodically discharging
lubricant to said measuring devices under high
pressure, and means responsive to the viscosity
of the lubricant for varying the duration of the
periods during which lubricant is discharged to
said devices.
16. In a centralized lubricating system, the
combination of a lubricant reservoir, a plurality
of bearings to be lubricated, a ?ow metering unit
at each bearing for controlling the ?ow of lubri
cant thereto, conduits connecting said ?ow
metering units and said reservoir, a cylindrical
chamber in said reservoir having a by-pass open
ing therein, a pair of pumps in said reservoir,
said pumps being connected to opposite ends re
spectively of said cylindrical chamber, a valve in
said chamber operable to close said by-pass,
valve operating means reciprocable in opposite
directions by the pressure of the lubricant sup
plied by said pumps respectively, and a high re
sistance bleed passageway leading from the end
of said cylindrical chamber opposite said by
pass opening to said reservoir, whereby the rate
of ?ow of lubricant through said restricted pas
sageway will control the length of the period
during which said valve is closed.
1'7. A central lubricating installation for a
voir, and a control means connected to said
secondary reservoir and responsive to the viscosity
of the lubricant for determining the duration of 30
the discharge period.
-
20. A lubricating apparatus comprising, a con
tainer for lubricant, conduits extending there
from to a plurality of bearings to be lubricated,
a pair of continuously operating pumps in said 35
container, a valve closing a by-pass from the dis
charge side of one of said pumps to said container,
a cylinder having one end thereof connected to
the discharge side of said last named pump and
having its other end connected to the discharge 40
side of the other of said pumps, a piston recip
rocable in said cylinder in a position to have its
opposite faces acted upon respectively by the dis
charge from said pumps, a lost motion connec
tion between said piston and said valve, and a 45
high resistance permitting escape of lubricant
from said cylinder, said piston, said cylinder, and
said resistance vent constituting means for con
trolling the duration of the periods during which
said valve is closed, thereby to control the dura 50
tion of the periods during which lubricant is sup
plied through said conduits to the bearings to be
lubricated.
21. A pressure supply installation for a system
for the lubrication of the bearings of automobiles 55
comprising, a conduit system for supplying lu
bricant to the bearings to be lubricated, a source
of lubricant pressure, means for periodically ad
mitting said lubricant pressure to said conduit sys
tem during operation of the mechanism, and lu 60
bricant viscosity controlled means for regulating
the duration of the periods of admission.
plurality oi’ bearings oi’ a mechanism compris- ,
ERNEST W. DAVIS.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 085 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа