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Патент USA US2407043

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Sept. v3, 1946.‘ >
2,407,043
'G. R. TREMOLADA
AIR OPERATED CLUTCH
' Filed July‘5, 1944
2 Sheex’c's-Sheet 1
INVENTOR.
GUGLIELMO R. TREMOLADA
BY‘
44
‘
-
‘ATTORNEY
Sept. 3, 01946.
a. R. TREMOLADA
‘ 2,407,043
AIR OPERATED CLUTCH
Filed July 5, 1944 '
2 Sheets-Sheet 2
h
INVENTOR
sueueuno R. TREMOLADA
BY
'
_
ATTORNEY
Patented Sept. 3, 1946
2,407,043
UNITED’ STATES ‘ PATENT
OFFICE
2,407,043
AIR OPERATED CLUTCH
Guglielmo R. Tremolada, Los Angeles, Calif., as
signor to Emsco Derrick & Equipment Company,
Los Angeles, Calif., a corporation of California
Application July 5, 1944, Serial No. 543,546
11v Claims; (01. 192——85)
1
2
This invention relates in general to drawworks
such as employed in oil well derricks, and relates
in particular to a friction clutch for connecting
the cable spool of the drawworks to the drum
tion will be brought‘ out in the‘following part of
the speci?cation.
shaft.
’
It is an object of the present invention to pro
vide a durable multiple plate clutch which may
be supported‘ on the drawworks shaft and which
may be operated by air pressure.
An object of the invention is to provide a fric 10
tion clutch construction in association with ‘the
drum shaft and cable drum of a drawworks in
Referring to the drawings which are for illus
trative purposes only,
Fig. 1 is a fragmentary elevational view show
ing the invention in use with the'cable drum of a
drawworks.
Fig. 2 is an enlarged fragmentary cross section
taken as indioatedfby the line 2-2 of Fig. 1.
Fig. 3 is a longitudinal sectional view through
the upper portion of the‘ clutch device‘, taken as
indicated by‘the line 3-3 of Fig. 2.
which the parts are so related that they may be
Fig.‘ 4 is a fragmentary cross section taken on
readily removed for purpose of inspection and
a plane represented by the‘line 4—4 of Fig. 3.
renewal of wearing parts such as composition 15
In
1 I show a drum shaft ll] of a draw
clutch facing and packing.
‘
works supported in bearing means I l and having
An object of the invention is to provide a shaft,
2, member rotatable on the shaft, such as the
a cable drum {2. A' sprocket I 3 is turnable on
the shaft l0 and has in association-therewith a
cable drum, having an outer cylindric wall pro
clutch I4" by which it may be connected to the
jecting therefrom toward the end of the shaft, 20 shaft so’ as to‘ drive the same. This clutch I4
and a simple and rugged multiple plate friction
is actuated by air which is delivered tlnrough a
clutch disposed within this outer cylindric wall,
conduit I5‘and a swivel connection I6.
with means to form an annular piston connected
As shown in Fig. 3, they clutch 14 includes an
to the end of the shaft which cooperates with an
outer cylindric wall I‘! which is connected to the
annular cylinder to form a pressure chamber to 25 sprocketv by means of ' a wall [8‘ and surrounds
receive air for actuation of the clutch. In the
the end portion IQ of the shaft l0. On the shaft
preferred form of the invention, a quick relief
[0' within‘ the cylindric wall 11 there is an inner
valve is provided in the air duct. adjacent the
cylindric wall or hub 20 having an outwardly pro
air cylinder.
jecting ?ange 2! at its inner end. Surrounding
A further object is to provide a multiple disc 30 the hub 20 within the outer cylindric wall I? there
fluid operated clutch of this general character
isian assembly of annular friction plates 23 and
having means whereby it may be effectively water
24, the first of these-namely, the plates 23--be
cooled, thereby, greatly increasing the life of the
ing chambered and having toothed connection 25
clutch by preventing an excessive temperature
with the hub 29, and the second of‘ these plates—
rise therein.
.
A further object of the invention is to provide
a means whereby a ?uid for operating the clutch
may be delivered thereto, and also to provide
means for conducting a cooling ?uid, such as
namely, the friction plates 24—having toothed
connection 26 with the outer cylindric wall H,
the plates 23 and 24*being therefore axially mov
able. The plates 24 have on the opposite faces
thereof clutch plates‘?! of a material having the
water, through the cooling chambers of the 40 desired frictional ‘characteristics. Accordingly,
when axial compression is applied to the assembly
clutch.
of friction plates, rotation of the sprocket It will
A further object of the invention is to provide
be transmitted through the outer cylindric wall
swivel fluid connection whereby a cooling fluid
I‘! and the plates 24 to‘ the, plates 23 and the
may be circulated and a fluid for actuation of
45 flange 2|, thereby driving the shaft ID.
the pressure cylinder of the device may be de
The outer of. the clutch plates 23 has therein
livered while relative rotation exists between co
an annular, outwardly faced, recess 28, de?ned
operating parts‘ of the device embodying my in_
by inner and outer side walls 29 and 3d. A plate
vention.
3|, secured to the end of the hub 20 by bolts 32,
A further object of the invention is to provide a
has thereon‘ an annular piston 33 which enters
swivel connection of this character of novel form
the‘recess 28 so that a pressure chamber 34‘ is
wherein different parts of the swivel may be
formedbetween the piston 33 and the end fric
selectively removed for the purpose of inspection
tioni plate; 23 of the assembly of friction plates.
or replacement of packing.
Fluid pressure applied‘ to this chamber‘34 will
Further objects and advantages of the inven 55 force the assembly of friction plates toward‘ the
2,407,043
4
3
prises an inwardly directed ?ange 1,3 which en
?ange 2| and thereby actuate the clutch l4.
Spring members 35 act between the ?ange 2|
and the outer friction plates 23 to force the outer
friction plates 23 toward the piston 33 to accom
plish separation of the friction plates when ?uid
gages the end of the tube 65 and de?nes a cham
ber 14 which communicates with the passage 66
through the opening 69 and which has an ex
ternal port 15 to which a cooling ?uid conduit
16 may be connected. A cap 11, bolted on the
end of the shell 1|], contains packing means 18
in turning engagement with the projecting end
pressure is released from the pressure cham
ber 34.
An opening or bore 31 extends inwardly from
the end of the shaft l9 and from this bore 31
19 of the inner tube 59.
This cap 11 de?nes a
ly to meet inlet and outlet passages 40 and 4| '
chamber 80 which communicates with the pas
sage 64 and has a port 8| to which a cooling ?uid
formed axially within the hub 20. The ends of
conduit 82 may be connected. At the outer end
inlet and outlet passages 38 and 39 extend radial
of the cap 11 there is a chamber 83 communicat
ing with the passage 60 through the tube 59 and
15 having a port 84 to which the air conduit I5 is
connected.
the ?rst friction plates 23 by ?exible connections
The radial passage 6| of the plate 56 is con
44 and 45 which are of like form.
nected by a conduit 85 with a port 86 in the piston
As will be perceived from Figs. 2 and 3, the
33 communicating with the pressure chamber 34.
friction plates 23 have recesses or notches 46 in
their inner edges. In each of these notches 46 20 A quick relief valve 81 is interposed in or con
nected to the conduit 85 so as to provide a quick
one of the ?exible connectors 44 or 45 is situated.
connection with the atmosphere when pressure
Each connector 44 consists of a section of ?exible
is released in the conduit 85, such quick relief
conduits 41 having at its inner end a connector
valve being old in the art pertaining to air op
43 whereby it is connected to the inlet passage
erated devices.
40 and having at its outer end a connector 49
In the operation of the equipment, water, as a
whereby it may be connected to the associated
cooling ?uid, is fed in through the conduit 82 to
chamber 43 through the inner wall of the fric
the chamber 80 of the swivel connection Hi. This
tion plates 23 de?ning such chamber 43. In a
water ?ows through the projecting passage 64,
like manner, each of the ?exible connections 45
comprises a section of ?exible conduits 4'! and 30 the opening 53, the tube 5| , and inlet passages
38 and 4|] to the chambers 42 and 43. From these
the inner and outer ends thereof are provided
chambers 42 and 43, the cooling ?uid passes to
with connectors 48 and 49 whereby connections
the chamber 14 of the swivel connection and is
may be made with the passages 4| and the cham
carried away by the conduit 16. Actuation of
bers 43. A body structure 50 is connected to the
end of the drum shaft H‘! and has thereon a tube 35 the clutch results from the application of air
pressure through the conduit l5. This air pres
5| which projects into the bore 31 of the shaft
sure passes through the projecting tube 59 to
and has thereon an enlargement or partition
the radial passage 6| and is carried by the con
wall 52 which is disposed between the inner ends
duit 85 to the pressure chamber 34.
of the passages 38 and 39. The outer end of the
the passages 40 and 4| communicate with a cool
ing chamber 42 in the ?ange 2| and the passages
40 and 4| are connected to the chambers 43 of
tube 5| communicates with an opening or cham .40
ber 53 in the body structure 50, and the space 54
in the bore 31 surrounding the tube 5| communi
the combination of: a shaft member; an outer
member in turning relation to said shaft member
and having an outer cylindric wall projecting
. cates with an opening 55 which extends through
the body structure 50.
The body structure 50 includes an outer plate
56 having an axial tapered bore 51 to receive a
tapered plug 58 disposed on the inner end of a
projecting tube 59. The lumen 60 of the tube 58
I claim as my invention:
1. In a power device of the character described,
g
“
therefrom toward the end of said shaft member;
an inner cylindric wall member ?xed on said
shaft member within said outer wall member;
an inner ?ange extending from the inner end of
communicates with a radial passage 6| in the
said inner wall member toward said outer wall
plate 56 of the body structure 50, and surround 50 member; an assembly of ?rst and second annular
ing the inner end of the tube 59 the plate 56 has
friction plates disposed around said inner wall
an annular opening 62 which communicates with
member in alternate order, said ?rst plates being
the opening 53. A second or middle projecting
connected to said inner wall member and said
tube 63 projects from the body structure in a
second plates being connected to said outer wall
position surrounding a portion of the inner tube
member but having axial movement relatively
59, forming therearound a second projecting pas
thereto, the outer of said plates having an inner
sage 64. Around this middle tube 63 there is
cylindric wall with an outwardly presented cylin
an outer projecting tube 65 de?ning around the
dric surface and an outer cylindric wall with an
tube 63 a third projecting passage 66. The second
inwardly presented cylindric surface so as to form
projecting passage 64 communicates at its inner
an annular recess in its outer face; an outer
end through the openings 62 and 53 with the
?ange ?xed on said shaft member and having
interior of the tube 5|, and the outer projecting
an annular piston in said annular recess, said
passage 66 communicates through the opening
piston having an outer cylindric wall with an in
55 with the space 54 in the bore 31 surrounding
wardly presented cylindric surface confronting
the tube 5|. The outer tube 65 has on its inner
said outwardly presented surface of said outer
end a ?ange 61 whereby it may be removably
plate and an outwardly presented cylindric sur
secured to the face of the plate 56 by screws 68.
face confronting said inwardly presented cylin
The middle tube 63 is supported Within the outer
dric surface of said plate, to form in said recess
tube 65 and the passage 66 between these tubes
an annular pressure chamber; and means to ap
communicates with the exterior of the outer tube
ply ?uid pressure to said chamber to force said
65 through an opening 69. A cylindric shell 10
assembly of friction plates toward said inner
is turnably mounted on the outer tube 65 by
?ange.
means of a roller bearing 1|, and between the
2. In a power device of the character described,
bearing ‘II and the opening 69 there is packing
the combination of : a shaft member having an
means 12. The outer end of the shell ‘ll! com
043
5
6
axial bore leadingin from the‘ end thereof; an
and having an: outer cylindric wall projecting
outer member inturning relation to‘ said shaft
therefrom toward the end of said shaft member;
member and‘having an-outer cylindricwall pro
an inner cylindric' wall. member ?xed on said
jecting'therefrom toward the end of said shaft
shaft member within said outer wall member,
member; an inner cylindric wall member; ?xed 5 there‘ being inlet and outlet passages in said inner
on said shaft member within said outer wall
wall member; an inner ?ange extending from
member, there being inlet and outlet. passages in
the inner end of said inner‘wall member toward
said inner Wall member and‘said shaft member 1 said‘ outer wall member; an assembly of ?rst and
communicating with said bore of saidshaft mem
second annular friction plates disposed around
her; an inner ?ange extending from the inner 10 said inner wall member in alternate order, said
end of said inner wall member toward said outer
first plates being chambered and being connected
wall member; an assembly of ‘ ?rst and second
to' said inner wall‘ member and said second plates
annular friction plates disposed around said in
being connected to said outer wall member but
ner wall member in alternate order, said ?rst
having axial movement relatively thereto, the
plates being chambered and being connected to 15 outer of said plates having an annular recess in
said inner wall member and said second plates
its outer face; anouter ?ange ?xed on said shaft
being connected to said outer wall member: but
member and having an annular piston in said
having axial movement relatively thereto, the
annular recess to“ form in said recess an annular
outer of ‘said plates having an annular recess in
pressure chamber; means forming ducts connect
its outer face; an outer ?ange ?xed on said'shaft 20 ing said inlet and outlet passages with the cham
member and having an annular piston in said
bers of said ?rst plates; an inner tube extending
annular recess to form in said recess an annular
from the end of said shaft member on its axis
pressure chamber; means forming ducts con
of-rotation, forming a projecting ?uid passage;
necting said inlet and outlet passages with the
a middle tube projecting from the end of said
chambers of said ?rst plates; and meanslto‘ apply 25 shaft member and forming around said inner
fluid pressure to said pressure chamber to force
tube‘ a second projecting passage; an outer tube
said'assembly of friction plates toward said inner
projecting'froin the end of said shaft member
?ange, andpassing a cooling ?uid through said
and‘ forming around said' middle tube a third
axial bore of said shaft member to and from said
projecting passage, said middle and outer tubes
inlet and outlet passages so that it will‘ circulate 30 being‘ shorter'than‘ said inner tube so that said
through the chambers of said ?rst plates.
inner tube will have a‘ projecting end, and the
' 3. In a power device of the character described,
‘inner'ends of‘said projecting passages being con
the combination of: a shaft member; an outer
nected to" said inlet and outlet passages and to
member in turning relation to said shaft member
said pressure chamber; a sleeve member sup
and having an outer cylindric wall projecting
ported on said outer tube by means of a bearing,
therefrom toward the end of said shaft member;
said." sleeve having a port communicating with
an inner cylindric wall member ?xed on said
said third projecting passage; and a cap mounted
on the end of“ said sleeve having seal forming
shaft member within said outer wall member,
there being inlet and outlet passages in said inner
wall member; an inner ?ange extending from the
inner end of said inner wall member toward said
outer wall member; an assembly of ?rst and
means'therein to engage the projecting end of
said'inner‘tube, said cap member de?ning against
the outer end of said‘sleeve a ported chamber
communicating with the end of said second pas
second annular friction plates disposed around
sage‘ and“ de?ning a ported chamber communi
said inner wall member in alternate, order, said
cating with‘the-outer end of'said passage through
?rst plates being chambered and being connected 45 said ‘inner tube, whereby from relatively station
to said inner wall member and said second plates
being connected to said outer wall member but
having axial movement relatively thereto, the
ary‘conduits fluid under pressure may be directed
into-said annular- chamber and‘ a cooling ?uid
may" be passed through said chambers of said
outer of saidplates having an annular recess in
?rst plates.
'
its outer face; an outer ?ange ?xed on said shaft 50
5; In'alpower’device of the character described,
member and having an annular,‘ piston in said
the- combination of‘: a shaft‘ member having
annular recess to form in said recess an annular
thereon means‘ operated by ?uid under pressure
pressure chamber; means forming ducts connect
and means‘ to be‘cooled by'a ?ow of cooling ?uid,
ing said inlet and outlet passages with the cham
said ?rst named means having an expansible
bers of said ?rst plates; an inner tube extending 55 chamber to receive ?uid under pressure and said
from the end of said shaft member on its axis‘ of
shaft member having an inlet passage and an
rotation, forming a projecting fluid passage; a
outlet passage communicating with the means to
middle tube projecting from the end of said shaft
be‘ cooled; an‘inner tube extending from the end
member and‘forming around said inner tube a
of‘ said’ shaft member on its axis of rotation,
second projecting passage; an outer tube pro 60 forming a projecting ?uid passage, the inner end
jecting from the end of said shaft member and
of: s'aid'projecting passage communicating with
forming around said middle tube a third pro
said expansib'le chamber; a middle tube project
jecting passage, the inner ends of said projecting
ing from‘ the end ofsaidshaft member and form
passages being connected to said inlet and outlet
ing around said inner tube a second projecting
passages, and to said pressure chamber; and a 65 passage, the inner'end of said second projecting
shell on said assembly of tubes in turning rela
passage “communicating with one of said passages
tion thereto, said shell having ports communi
of said shaft member; an outer tube projecting
cating respectively with said projecting passages
from the end of said shaft member and forming
de?ned by said tubes, whereby fluid under pres
around said middle tube a third projecting pas
sure may be directed into said annular chamber 70 sage, the inner‘end of said third projecting pas- ,
and a’ cooling ?uid may be passed through said
sage communicating with the other of said pas
chambers of said ?rst plates.
sages of said shaft member; and a shell on said
4. In a power device of the character described,
the combination of : a shaft member; an outer
assembly of tubes in turning relation thereto, said
shell having ports communicating respectively
memberini turning relation to said shaft member 75 with said projecting passages de?ned by said
2,407,043
7
‘tubes, whereby ?uid under pressure may be di
8
0nd, and third openings therein, said third open
ing connecting at its inner end to said bore of
rected into said expansible chamber and a cooling
said shaft member, and a tube connected to said
?uid may be passed through said means to be
second opening and extending from said body
cooled.
6. In a power device of the character described, C1 structure into said bore and having thereon be
tween the inner ends of said inlet and outlet pas
the combination of: a shaft member having
sages an annular partition member; means con
thereon means operated by ?uid under pressure
necting said ?rst opening with said expansible
and means to be cooled by a ?ow of cooling ?uid,
chamber; an inner tube projecting axially from
said ?rst named means having an expansible
chamber to receive ?uid under pressure and said v10 said body structure to form a ?rst projecting
passage, the inner end of which‘ communicates
shaft member having an inlet passage and an
with said ?rst opening; a middle tube projecting
outlet passage communicating with the means
from said body structure and de?ning a second
to be cooled; an inner tube extending from the
projecting passage around said inner tube, the
end of said shaft member on its axis of rotation,
inner end of said second projecting passage com
forming a projecting ?uid passage; a middle tube
municating with said second opening; an outer
projecting from the end of said shaft member
tube projecting from said body structure around
and forming around said inner tube a second
said middle tube and forming therearound a
projecting passage; an outer tube projecting from
third projecting passage, the inner end of which
the end of said shaft member and forming around
said middle tube a third projecting passage, said 20 communicates with said third opening; and a
middle and outer tubes being shorter than said
inner tube so that said inner tube will have a
shell structure surrounding said projecting tubes
in turning relation thereto, said shell structure
having three ports communicating respectively
projecting end, and the inner ends of said pro
with said three projecting passages de?ned by
jecting passages being connected to said inlet
and outlet passages, and to said chamber; a sleeve 25 said projecting tubes.
9. In a power device of the character de
member supported on said outer tube by means
scribed, the combination of : a shaft member; an
of a bearing, said sleeve having a port communi
outer cylindric member surrounding said shaft
cating with said third projecting passage; and a
member in turning relation thereto; ?rst and
cap mounted. on the end of said sleeve having
seal forming means therein to engage the project 30 second ?anges connected to said shaft member
and. extending radially therefrom in axially
ing end of said inner tube, said cap member de
spaced relation; an assembly of ?rst and second
?ning against the outer end of said sleeve a ported
friction plates disposed around said shaft be
chamber communicating with the outer end of
tween said ?rst and second ?anges and within
said passage through said inner tube, whereby
from relatively stationary conduits ?uid under 35 said outer member, said ?rst plates being con
nected to said shaft member and said second
pressure may be directed into said expansible
plates being connected to said outer member;
chamber and a cooling ?uid may be passed
walls cooperating with said second ?ange and
through said chambers of said means to be cooled.
the outer of said ?rst friction plates to form an
7. In a power device of the character described,
expansible chamber in which ?uid may act to
the combination of : a shaft member having
force said friction plates into operative engage
thereonmeans operated by ?uid under pressure
ment, there being an opening through said outer
and means to be cooled by a, ?ow of cooling ?uid,
?ange communicating with said chamber; wall
said ?rst named means having an eXpansible
means connected to said sh'aft having a ?uid de
chamber to receive ?uid under pressure and said
livery passage; and ?uid conveying means con
shaft member having an inlet passage and an
necting said ?uid delivery passage With said
outlet passage communicating with the means to
opening through said outer ?ange, said ?uid con
be cooled; an inner tube extending from the end
veying means comprising a duct connecting said
of said shaft member on its axis of rotation,
passage with said opening, and a quick relief
forming a projecting ?uid passage; a middle tube
projecting from the end of said shaft member 50 valve connected to said duct.
10. In a power device of the character de
and forming around said inner tube a second pro
scribed, comprising a shaft member having there
jecting passage; an outer tube projecting from
on means operated by ?uid under pressure and
the end of said shaft member and forming
means to be cooled by a ?ow of cooling ?uid, said
around said middle tube a third projecting pas
sage. the inner ends of said projecting passages .U] in ?rst named means having an expansiblc cham
ber to receive ?uid under pressure and said shaft
being connected to said inlet and outlet passages
member having an axial bore from which lead
and to said chamber; and a shell on said as
sembly of tubes in turning relation thereto, said
an inlet passage and an outlet passage communi
cating with the means to be cooled and walls
with said projecting passages de?ned by said 60 forming a pressure passage communicating with
said chamber, the combination of: a body struc
tubes. whereby ?uid under pressure may be di—
ture for connection to the end of said shaft
rected into said expansible chamber and a cool
member, said body structure having ?rst, second,
ing ?uid may be passed through said means to
and third openings therein, said ?rst opening
be cooled.
8. In a power device of the character described, 65 communicating with said pressure passage, said
third opening connecting at its inner end to said
the combination of : a shaft member having
bore of said shaft member, and a tube connected
thereon means operated by ?uid under pressure
to said second opening and extending from said
and means to be cooled by a ?ow of cooling ?uid,
body structure into said bore, and having thereon
said ?rst named means having an expansible
between the inner ends of said inlet and outlet
chamber to receive ?uid under pressure and said
passages an annular partition member; an inner
shaft member having an axial bore from which
tube projecting axially from said body structure
lead an inlet passage and an outlet passage com
shell having ports communicating respectively
municating with the means to be cooled; a body
structure connected to the end of said shaft
member, said body structure having ?rst, sec
to form a ?rst projecting passage, the inner end
of which communicates with said ?rst opening;
a middle tube projecting from said body struc
2,407,043
ture and de?ning a second projecting passage‘
around said inner tube, the inner end of said
second projecting passage communicating with
said second opening; an outer tube projecting
from said body structure around said middle tube
and forming there around a third projecting pas
10
the combination of : a body structure for con
nection to the end of said shaft member, said
body structure having ?rst, second, and third
openings therein for communicating individually
with said passages; an inner tube projecting ax~
said third opening; and a shell structure sur
ially from said body structure to form va ?rst
projecting passage, the inner end of which com
municates with said ?rst opening; a middle tube
rounding said projecting tubes in turning rela
projecting from said body structure and de?ning
sage, the inner end of which communicates with
tion thereto, said shell structure having three
a second projecting passage around said inner
ports communicating respectively with said three
projecting passages de?ned by said projecting
tube, the inner end of said second projecting pas
sage communicating with said second opening;
an outer tube projecting from said body struc
ture around said middle tube and forming there
tubes.
11. In a power vdevice of the character de
scribed, comprising a shaft member having there—
around a third projecting passage, the inner end
on means operated by ?uid under pressure and
of which communicates with said third opening;
means to be cooled by a flow of cooling ?uid, said
and a shell structure surrounding said projecting
?rst named means having an expansible cham
tubes in turning relation thereto, said shell struc
ber to receive ?uid under pressure, an inlet pas
ture having three ports communicating respec
sage and an outlet passage communicating with 20 tively with said three projecting passages de?ned
by said projecting tubes.
the means to be cooled, and walls forming a pres
sure passage communicating with said chamber,
GUGLIELMO R. TREMOLADA.
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