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Патент USA US3091324

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May 28, 1963 '
3,091,314
G. P. BAYNES
CLUTCH MECHANISM AND THE LIKE
Filed Jan. 30, 1961
4 Sheets-Sheet 1
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May 28, 1963
G. P. BAYNES
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Filed Jan. 30, 1961
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3,091,314
CLUTCH MECHANISM AND THE LIKE
Filed Jan. 30, 1961
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INVEN TOR.
May 28, 1963
G. P. BAYNES
3,091,314
CLUTCH MECHANISM AND THE LIKE
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United States Patent() "ice
1
3,091,314
CLUTCH MECHANISM AND THE LIKE
Gene P. Baynes, Green Island, rh'oy, N.Y., assignor to
The Bendix Corporation, Troy, N.Y., a corporation of
Delaware
Filed Jan. 30, 1961, Ser. No. 85,919
17 Claims. (Cl. 192-104)
3,091,314
Patented May 28, 1963
2
18 in a section of shaft 20, the opposite end of vwhich is
provided with a gear 22 by which the shaft 20 may be
rotatably driven in any suitable manner. The section of
shaft ‘20 is suitably journalled in a housing 24 by hearing
means as, for example, roller bearings not shown, and
the axially extending boss 16 of the driving member is
suitably keyed to the shaft 120 and is held in place by an
axially extending bolt 26 which extends through the disk
and boss portions ‘of the driven member A and is
The present invention relates to clutch mechanism
generally; and more particularly to clutch means which 10 threaded into the shaft 20.
Likewise the annular driven member C may be sup
performs an automatic regulating ‘function with respect
ported and journalled in any suitable manner and, as
to the speed of the driven member. The present inven
shown in the drawing, is rotatably mounted with respect
tion is a continuation in part of U.S. patent application
to the longitudinal axis B by means of an end cover plate
773,909 ?led November 14, 1958, now abandoned.
28 that is an integral part of the driven member C. The
An object of the present invention is the provision of
outer portion 10 of the driven member C is generally
a new and improved construction of a clutch mechanism
corrugated
for reasons which will later be described and
which is simple in con?guration, inexpensive to make and
is then bent radially inwardly on one end thereof to pro
assemble, and is e?icient in its operation.
vide the end cover plate section ‘28. The radially inner
Another object of the present invention is the pro
vision of a construction which can be modi?ed slightly 20 end of the cover plate 28 is provided with an axially ex
to produce various control functions.
A more detailed object of the present invention is the
provision of a new and improved speed controlling clutch
having “engaging elements” on which centrifugal force
tending ?ange 30 by bending its radially inner end axial
ly inwardly, and a roller bearing 32 is interpositioned be
tween a small diameter boss 34 on the driving member
A and the axially extending flange 30‘ of the end cover
acts to move them to their disengaged position when a 25 plate 28. The roller bearing 32 is pressed into the axial
ly extending ?ange 30 to rigidly support the driven mem
generally predetermined speed is exceeded, and on which
ber C, and the roller bearing 32 is held in place up against
“engaging elements” springs act to return them to their
the disk portion 12 of the driving member by means of
engaging position below said generally predetermined
a snap ring 36 which abuts the opposite end of the roller
speed.
The invention resides in certain constructions, and 30 bearing 32 and is partially received in a groove 38 in the
boss 34.
combinations, and arrangements of parts; and further ob
As previously mentioned the outer portion 10 of driven
jects and advantages will become apparent to those skilled
member C is preferably corrugated to provide a radial
in the art to which the invention relates from the fol
lowing description of several preferred embodiments de
scribed with reference to the accompanying drawings
forming a part of this speci?cation, and in which:
FIGURE 1 is a cross sectional view of a mechanical
ly outwardly extending projection 40 in the outer portion
10 which generally overlies the disk portion 12 of the
driving member A, and a pair of radially inwardly ex
tending recesses, corrugations, or valleys 42 and 414 in
its outer surface which lie on opposite sides of the pro
speed control ‘device employing principles of the present
jection ‘40. The radially inwardly extending recesses 42
invention;
40 and 44 provide a convenient arrangement for receiving a.
'FIGURE 2 is a right end view of the mechanism shown
in FIGURE 1 with portions broken away to better illus
trate the internal structure;
FIGURE 3 is a fragmentary sectional view taken gen
erally upon the lines 3—3 in (FIGURE ‘2;
FIGURE 4 is a fragmentary cross sectional view simi
lar to FIGURE 1 but showing another embodiment of
the invention;
pair of V belts, not shown, by which torque from the
driven member C may be transmitted to any suitable
mechanism that it is desired to operate.
The radially inwardly extending ?ngers D may be piv
otally connected to the driven member C in any suitable
manner, but as seen in the drawing is very neatly accom
plished by providing bearing areas 46 on the radially
outer edges of the ?ngers or levers D which are received
FIGURE 5 is a cross sectional view similar to FIG
URE 1 but showing still another embodiment of the in 50 in the projection 40. The pivotal connection between
the ?ngers D and the driven member C is made capable
vention; and
of transmitting torque to the driven member C by pro
FIGURE 6 is a fragmentary cross sectional view show
viding a hook-shaped projection 48 adjacent the trailing
ing a portion of the embodiment of FIGURE 5 in its
edge of each of the ?ngers D-which hook-shaped pro
normal at rest position.
jection extends through an opening or hole 50‘ in the pro
The speed control mechanism shown in FIGURES I
jection 40 and engages the outer surface of the outer
and 2 of the drawings generally comprises a generally
portion 10 of the driven member C. The driving mem
disk shaped driving member A that is rotatable about a
ber A is adapted to be driven in a clockwise direction as
longitudinal axis B, a generally annular or cup-shaped
seen in FIGURE 2 at a rate which will substantially be
driven member C that is positioned concentric within
the driving member A with- its outer portion 10‘ positioned 60 at or exceed the speed of rotation of the driven member
generally radially outwardly of the disk portion 12 of
the driving member A, and a plurality of generally radial
ly inwardly extending ?ngers that are pivotally carried
by the outer portion 10 of the driven member C and
which are provided with friction engaging surfaces 14 65
which engage the disk portion 12 to drive the driven
member C.
The driving member A and driven member C may be
mounted and driven in any suitable manner; and, as
C. It will, therefore, be seen that torque transmitted to
the ?ngers D by the driving member A produces a mo
ment upon the ?ngers which produces a tension upon the
hook-shaped projection 48‘ and bearing upon the remain
ing portion of the bearing areas 46.
The ?ngers D can, of course, be made to only engage
one side of the disk portion $12, but, in the preferred ar
rangement shown in the drawing, will be alternately
spaced around the disk portion 12 so that adjacent ones
of the ?ngers D will engage opposite sides of the disk
shown in the drawing, the generally disk-shaped driving 70
portion 12. Likewise, the pivotal support between the
member A is provided with an axially extending boss 16
on one side thereof which is received in a receiving bore
?ngers D and the outer portion 10 of the driven member
3,091,314
C may be moved somewhat laterally with respect to the
disk portion '12, but in the preferred embodiment shown
in the drawing are each located in a plane which sub
stantially passes through the center of the disk portion
112. The ?ngers D, therefore, are appropriately bent
creasing moment is provided with respect to the point of
attachment of the ?ngers with the outer portion 10 of
the driven member, so that the forces tending to urge the
friction producing elements 52 out of engagement with
the disk 12 continue to increase to provide a snap actua
‘from. their bearing areas 46 to a position where its inner
end isspaced from the appropriate face of the disk por
tion 12 by a distance su?icient to receive a friction pro
tion which thereafter quickly lifts the friction producing
ducing element 52 that is adapted to engage the face of
the disk portion 12. The friction producing elements
shown in the drawing are generally circular in section
and are ‘of the long wearing heat resistant type shown
and described 'in the Stedman et al. Patent No. 2,784,
105. The friction producing elements 52 may be fas
limited by stop means in any suitable manner, as, for
tened to the ?ngers D in any suitable manner and are 15
ber A, suitable cup-shaped openings 58 will preferably
.preferably riveted in the manner described in the above
referred to patent.
elements from the disk portion 12. Maximum movement
of the ?ngers D away from the disk portion 12 may be
instance, by engagement of the ?ngers with the cover
plate 28 on one side of the disk and by an annular stop
56 provided on the other side of the disk portion 12. In
order to help dissipate the heat created during engage
ment of the friction elements 52 with the driving mem
be provided in the end cover plate 28 to create a circula
tion of air past the friction elements 52 and the disk por
It will be seen that the center of the mass, or center
tion 12 of the mechanism.
of gravity, of the friction producing elements 52 is posi
It will be obvious ‘to those skilled in the art that the
tioned slightly laterally with respect to the bearing areas 20 details of construction described above can be altered
46 of the ?ngers D‘, so that the imaginary plane passing
slightly so that the resulting clutch structure will per
through the center of gravity and bearing area 46 of each
form different functions. In the embodiment shown in
?nger forms an acute angle with respect to a radial
FIGURE 4 of the drawings, the corrugations in the
plane; and so that rotation of the driven member C and
driven members C are slightly axially extended, and the
the ?ngers D causes a moment to be produced upon 25 outer ends of the radial ?ngers D are positioned in the
the ?ngers D which tends to bias the friction producing
recesses that are spaced axially outwardly of the respec
elements 52 out of engagement with the driving member
tive friction surfaces of the driving ‘member A. In the
A. In order to produce driving engagement between the
upper portion of FIGURE 4, for example, the radially
friction producing elements 52 and the disk portion 12, it
outer end of the ?nger D is bent away from the driving
is necessary, therefore, to provide resilient means for
member A and is received in the groove 60 that lies ad
holding the elements 52 into engagement with the disk
jacent the end cover 28 of the driven member C. The
portion 12 of the driving member A. The ?ngers D with
radial ?nger D is otherwise identical with that shown and
their friction producing elements 52 may be biased into
described in the previous embodiment. The radial ?ngers
engagement with the disk 12 in any suitable manner, but
D that are positioned on the opposite side of the disk
35
in the preferred embodiment shown in the drawing is
‘portion 12 have their radially outer ends bent away from
very neatly accomplished by placing adjacent ones of the
?ngers D in opposite sides of the disk portion 12, and
positioning a tension coil spring 54 between the leading '
edge of each ?nger and the adjacent trailing edge of the
forwardly positioned ?nger. A further advantage is had
by inclining the line of force of the coil springs 54
slightly forward
sion of the coil
ing areas 46 of
outer portion 10
the disk 12 in the opposite axial direction and are re
ceived in the groove 62. The ?ngers D which are posi
tioned on opposite sides of the disk 12 are fastened to
the driven member C by the identical hook arrangement
previously described, and are connected together by
means of coil springs that are similar to those shown in
and radially outwardly so that the ten
FIGURES 2 and 3. In the embodiment shown in FIG
springs 54 also tends to hold the bear
URE 4, the coil springsv 54 will be somewhat weaker
the ?ngers D into engagement with the 45 than those used in the embodiments previously described;
of the driven member C. This may best
so that the friction elements, .in their static or at rest
be seen in the upper portion of FIGURE 2 of the draw
condition 52 are caused to engage the disk 12 with only a
ings. It will further be seen that inasmuch as the springs
slight holddown force. vAs the rotation of the disk 12 is
54 connect alternate members on opposite sides of the
speeded‘up from its at rest condition, the frictional drag
.disk portion 12, an axial force is exerted upon each of 50 between the elements .52 and the disk 12 will produce a
the ?ngers D which it connects, tending to bias each of
slight driving torque on the driven member C. ‘Inasmuch
the ?ngers into friction producing engagement with the
as the center’of gravity .of the friction elements 52 is
disk portion 12 of the driving member A.
located between the driving disk 12 and the outer ends of
‘It-Will also be seen that axial alignment of parts is not
the ?ngers D which bear against the driven member C,
critical because of the manner in which the ?ngers D are 55 centrifugal "force causes the friction elements 52 to bear
mounted.
As previously indicated, it is inherent in the structure
previously described that the driven member C produces
a moment upon the ?ngers D which urges them out of
against the frictional surfaces of the driving member A
with increasing force. The arrangement shown in FIG
'URE 4- will have utility in a driving connect-ion vbetween
an electric motor powered driving member A, and a
engagement with the driving member A. Assuming that 60 rotating device having considerable inertia.
the driving member A is being driven at a speed in ex
cess of that which it is desired to drive the driven mem
ber C, engagement of the friction producing elements 52
with the disk portion 12 causes torque to be transmitted
to the driven member C and its speed of rotation to be
increased. When the speed of rotation of the driven
member C reaches or slightly exceeds the control speed
at which it is desired to prevent the driven member C
from exceeding, the centrifugal force upon the ?ngers D
With the
device shown in FIGURE 4, the electric motor can be
started under a slight load; and as the electric motor is
‘brought up to speed, more frictional force will be ap
plied between the frictional elements D and driving mem~
her A to gradually speed up the driven member until it
reaches a no slip condition.
Still other arrangements can be made of the elements
heretofore described; and one such arrangement is shown
in FIGURE 5 of the drawings. The embodiment shown
will be Slll'?Clel'lt to overcome the tension of the coil 70 in FIGURE 5 is very similar to that seen in FIGURE 4;
springs 54 and cause the friction producing elements 52
and differs principally therefrom, in that the ?ngers D
to move out of engagement with the disk portion 12 of
are held out of engagement with the disk 12in the static
.the driving member A. It will further be seen from the
condition of the device by means of U-shaped springs 64
drawing that as the ?ngers D move away from the disk
that are riveted to the center corrugation of the driven
portion 12 of the driving member A, a continually in 75 member C. The ?ngers D on opposite sides of the disk
3,091,314
5
12 are positioned directly opposite one another, and the
U-shaped spring 64 is positioned directly therebetween,
so that the friction elements 52 are normally biased out
of engagement with the disk 12. The ?ngers D are held
in their respective grooves by means of the coil springs
6
disk shaped member so that the line of centrifugal force
from its center of gravity is off center with respect to said
point of bearing of the friction member on said annular
outer member; and means transmitting biasing force in
an axial direction between the friction members on op—
66 and hook arrangement previously described. Inas
posite sides of said disk-shaped member.
on the hook shaped projection 48 and bearing upon the
remaining portion of the bearing areas 46. Alternative
ly the springs 66 could be fastened to the member C.
An annular stop plate 68 is suitably riveted to the open 15
with annular grooves therein spaced on opposite sides of
said generally disk shaped member; a pair of friction
3. In self-actuating clutch mechanism and the like: a
much as the embodiment shown in FIGURE 5 is to per
generally disk-shaped member having opposite side fric
form a slightly different function from that of the device
tion surfaces rotatable about an axis of revolution; an
seen in FIGURE 4, the coil springs 66 are connected to
the adjacent ?ngers on the same side of the disk 12, to 10 annular outer member positioned radially outwardly of
said disk shaped member and having an inside surf-ace
produce a force upon the ?ngers D that results in tension
members respective ones of which are positioned on op
posite sides of said disk shaped member with their radial
ly outer ends having a point of bearing in respective
grooves on opposite sides of said disk shaped member and
in FIGURE 5). The U-shaped springs 64 normally
the radially inner end of said friction members having a
biased the ?ngers D on opposite sides of the disk 12
friction producing surface for engaging the adjacent sur
against the stop plate 68 and closed end 28 of the driven
member C respectively. In the embodiment shown in 20 face of said disk shaped member, each friction member
having a center of gravity and being inclined to said disk
FIGURE 5, the outer member C will be the driving mem
shaped member so that the line of centrifugal force from‘
ber and the disk shaped member A will be the driven
its center of gravity is off center with respect to said point
member; and as the driving member C increases in speed,
end of the cup shaped member C (left hand side as seen
of bearing of the friction member on said annular outer
the centrifugal force on the friction elements 52 causes
them to compress the U-springs 64 and move upwardly 25 member, the friction members on opposite sides of said
into engagement with the disk 12. This permits the outer
member C to be speeded up from its at rest position
under no load, and allows a gradually increasing torque
to be transmitted to the driven member.
Still other modi?cations can be made by making slight
ly different arrangements of one or more of the elements
above described; and these arrangements may be used to
disk shaped member being inclined in opposite axial direc
tions when disengaged from said disk-shaped member;
and means transmitting biasing force in an axial direc
tion between the friction members on opposite sides of
said disk-shaped member.
4. In self-actuating clutch mechanism and the like: a
generally disk shaped member having opposite side fric
perform slightly different functions.
tion surfaces rotatable about an axis of revolution; an
generally disk shaped member having opposite side fric
ner end of said friction members having a friction pro
While the invention has been described in considerable 35 annular outer member positioned radially outwardly of
said disk-shaped member and having an inside surface
detail, I do not wish to be limited to the particular con
with annular grooves therein spaced on opposite sides of
structions shown and described, and it is my intention to
said generally disk shaped member; a pair of friction
cover hereby all novel adaptations, modi?cations and ar
members respective ones of which are positioned on op
rangements thereof which come within the practice of
posite sides of said disk shaped member with their radial
those skilled in the art to which the invention relates.
40 ly outer ends having a point of bearing in the respective
I claim:
groove of said annular outer member and the radially in
1. In self-actuating clutch mechanism and the like: a
tion surfaces rotatable about an axis of revolution; an
ducing surface for engaging the adjacent surface of said
annular outer member having an inside surface positioned 45 disk shaped member, each friction member having a cen
ter of gravity and being inclined toward said disk shaped
radially outwardly of said disk shaped member; a pair of
member so that the line of centrifugal force from its
friction producing members respective ones of which are
center of gravity is off center with respect to said point
positioned on opposite sides of said disk shaped member
of bearing of the friction member on said annular outer
with their radially outer ends having a point of bearing
against said inside surface of said annular outer member 50 member, the friction members on opposite sides of said
disk shaped member being angularly offset relative to
and the radially inner end of said friction ‘members having
each other when disengaged from said disk-shaped mem
a friction producing surface for engaging the adjacent sur
ber; and tension springs positioned outwardly of said disk
face of said disk shaped member, each friction member
shaped member and connecting said adjacent friction
having a center of gravity and being inclined to said disk
shaped member so that the line of centrifugal force from 55 members on opposite sides of said disk-shaped member.
5. In speed control mechanism, an ‘annular radially
its center of gravity is off center with respect to said
outer
member having a central axis of rotation and an
point of bearing of the friction member on said annular
inside surface, a radially inner disk-shaped member con
outer member, the friction members on opposite sides of
centric with said outer member and rotatable about said
said disk-shaped member being inclined in opposite axial
directions when disengaged from said disk-shaped mem 60 central axis in a given direction, said annular outer mem
ber having a plurality of openings therethrough spaced
her; and means transmitting biasing force in an axial
therearound generally radially with respect to said inner
direction between the friction members on opposite sides
member, a plurality of generally radially inwardly extend
of said disk shaped member.
ing members bearing against said inside surface of said
2. In self-actuating clutch mechanism and the like: a
generally disk shaped member having opposite side fric 65 annular outer member, adjacent ones of said inwardly ex
tending members each having a friction producing surface
tion surfaces rotatable about an axis of revolution; an an
for abutting said disk-shaped member, the friction sur
nular outer member having inside and outside surfaces
face of one radially inwardly projecting member being
positioned for abutment with one side of said disk-shaped
positioned on opposite sides of said disk-shaped member 70 member and the friction surface of said adjacent radially
inwardly projecting member being positioned for abut
with their radially outer ends having a point of bearing
ment with the other side of said disk-shaped member,
against said inside surface of said annular outer member
said radially inwardly projecting members each having a
and the radially inner end of said friction members having
hook adjacent its trailing edge which projects through one
a friction producing surface for engaging the adjacent sur
face of said disk shaped member, each friction member 75 of said openings through said outer member, and a coil
spring connecting the leading edge of one of said radially
having a center of gravity and being inclined toward said
positioned radially outwardly of said disk shaped member;
a pair of friction members respective ones of which are
3,091,314
7
8
inwardly extending members to the trailing edge of the
vfaces of saiddisk-shaped member and the other end of the
.adjacent radially inwardly extending member, whereby
other of said levers causing the other of said friction sur
faces of said means to engage the other of said opposed
'said spring biases said radially inwardly extending mem
bers toward engagement with said disk-shaped inner
frictional surfaces of said disk-shaped member, the
member.
imaginary lines connecting the center of gravity and said
point of bearing of the respective levers forming a slight
6. In speed control mechanism, an annular radially
outer member having a central ‘axis of rotation, a radially
inner disk-shaped member concentric with said outer
member and rotatable about .said central axis in a given
direction, said annular outer member having a plurality 10
radially inwardly diverging acute angle with respect to a
abutting :said disk-shaped member, the friction surface of
one radially inwardly projecting member ‘being positioned
member having generally opposed frictional surfaces
normal to said axis of rotation of said disk-shaped mem
ber, and means biasing said levers toward said disk-shaped
member, whereby when said surfaces engage said disk
of openings'therethrough spaced .therearound generally
shaped member most of the centrifugal force of said levers
radially outwardly with respect to said inner member, a
is taken in bearing by said outer member and only a small
plurality .of generally radially inwardly extending mem
fraction of that force is opposed by said biasing means
bers ‘bearing against the inside surface of said annular
and whereby a snap actuation is produced as said levers
outer member, adjacent ones of said inwardly extending 15 move away from said dislcshaped member.
members each having a friction producing surface for
9. In speed control mechanism, a generally disk-shaped
for abutment with one side of said disk-shaped member
rotatable about an axis of revolution in a given direction,
an annular outer sheet metal member having a radially
and the friction surface of said adjacent radially inwardly
projecting member being positioned for abutment with the
other side of said disk-shaped member, said radially in~
wardly from said surfaces, and an adjacent radially in
wardly projecting corrugation providing V-belt drive re
wardly projecting members each having a hook adjacent
ceiving surfaces, means including friction surfaces -posi~
outwardly projecting corrugation positioned radially out
its trailing edge which projects through one of said open
tioned for engagement with said opposed frictional sur
ings through said outer member, and a coil spring con 25 faces of said disk-shaped member, said means including
necting the leading edge of one of said radially inwardly
at least a pair of levers one end of each having a point
extending members to the trailing edge of the adjacent
of bearing against said outer member in said radially out
radially inwardly extending member, said coil spring be
wardly projecting corrugation and the other end of one
ing connected to said trailing edge at a point closer to said
of said levers causing one of said friction surfaces of
outer member than is its connection to said leading edge, 30 said means to engage one of said opposed friction surfaces
whereby said spring biases said radially inwardly extend
ofsaid disk-shaped member and the other end of the other
ving members toward engagement with said disk-shaped
of said levers causing the other of said friction surfaces of
inner member and biases “the leading portion of said
said means to engage the other of said opposed friction
radially inwardly extending member into engagement with
said outer member.
7. In speed control mechanism‘, a generally disk-shaped
.member having generally opposed frictional surfaces rotat
able about an axis of revolution in a given direction, an
surfaces of said disk-shaped member, the imaginary lines
35 connecting the center of gravity and said point of bearing
of the respective levers forming a slight radially inwardly
diverging acute angle with respect ‘to a norm-a1 to said axis
of rotation of said disk-shaped member, and means bias
annular outer member positioned radially outwardly from
ing said levers toward said disk-shaped member, whereby
.said surfaces, means including friction surfaces positioned 40 when said surfaces engage said disk-shaped member most
for engagement with said opposed frictional surfaces of
of the centrifugal ‘force of said levers is taken in bearing
said disk-shaped member, said means including at least a
by said outer member and only a small fraction of that
pair of lovers one end of each having a point of bearing
force is opposed by said biasing means and whereby a
against said outer member in the region radially outward
snap actuation is produced as said levers move away from
.ly of said disk-shaped member and the other end of one 45 said disk-shaped member.
.of said levers causing one of said friction surfaces to en
10. In speed control mechanism, a generally disk
gage .one frictional surface of said disk-shaped member
shaped member having generally opposed frictional sur
and the other end of the other of said levers causing the
faces rotatable about an axis of revolution in a given
other ofsaid friction surfaces to engage the other friction 50 direction, an annular outer sheet metal member having a
,al surface of said disk-shaped member, the imaginary lines
connecting the center of gravity and said point of bearing
of .the respective levers forming ‘a slight radially inwardly
radially outwardly projecting corrugation positioned
radially outwardly from said surfaces and an adjacent
radially inwardly projecting corrugation providing iV-belt
diverging acute angle with respect to a normal to said axis
drive receiving surfaces, means including friction surfaces
.of rotation of said disk-shaped member, and means bias 55 positioned for engagement with said opposed frictional
ing said levers toward said disk-shaped member, whereby
surfaces of said disk-shaped member, said means includ
when said surfaces engage said disk-shaped member most
ing at least a pair of levers one end of each having a
of the centrifugal force of said levers is taken in bearing
,by said outer member and only a small fraction of that
force is opposed by said biasing means and whereby a
point of bearing against said outer member in said radial
ly outwardly projecting corrugation and the other end
snap actuation is produced as said levers move away from
of one of said levers causing one of said friction surfaces
of said means to engage one of said frictional surfacesof
said disk-shaped member.
8. In speed control mechanism, a generally disk-shaped
member having generally opposed frictional surfaces
said disk-shaped member and the other end of the other
of said levers causing the other of said frictional surfaces
of said means to engage the other of said opposed fric
rotatable about an axis of revolution in a given direction, 65 tional surfaces of said disk-shaped member, the imaginary
an annular outer sheet metal member having a radially
lines connecting the center of gravity and said point of
outwardly projecting corrugation positioned radially out
bearing of the respective levers forming a slight radially
wardly from said surfaces, means including friction sur
faces positioned for engagement with said opposed fric
tional surfaces of said disk-shaped member, said means
including at least-a pair of levers one end of each having a
point of bearingagainst said outer member in said radial—
inwardly diverging acute angle with respect to a normal
to said axis of rotation of said disk-shaped member, and
‘ly outwardly projecting corrugation and the other end of
a plurality of tension coil springs one end of which is at
tached to the trailing edge of one of said levers and the
opposite end of which is attached to the leading edge of
the adjacent lever with the body portion of the spring
onetofsaid levers causing one of said friction surfaces of
crossing over between said levers radially outwardly of
‘said means to engage one of said opposed frictional sur 75 said disk-shaped member, whereby when said surfaces en
3,091,314
outer surfaces; a plurality of generally radially extending
gage said disk-shaped member most of the centrifugal
force of said levers is taken in bearing by said outer mem
her and only a small fraction of that force is opposed by
friction members the outer ends of which are loosely held
against the surface of said internal grooves for pivotal
movement toward and away from said friction surface of
said biasing means and whereby a snap actuation is pro
duced as said levers move away from said disk-shaped
said inner member, said radial members being biased
against said friction surface during rotation of said cup
member.
11. In clutch mechanism and the like: an inner mem
ber having a central axis of rotation and a generally
radially extending friction surface; an annular outer mem
ber having an inside surface concentric with said inner 10
member and rotatable relative thereto about said axis of
rotation, said annular outer member having a plurality of
shaped member, and the radially extending bottom portion
of said cup-shaped member being slotted and bent out:
wardly into air scoops for producing a cooling ?ow of air
through said cup-shaped member.
15. In a clutch mechanism and the like: an inner mem
ber having a central axis of rotation and having a gen
erally radially extending friction surface; an annular outer
member having an inside surface concentric with said in
bers standing against said inside surface of said annular 15 ner member and rotatable relative thereto about said axis
of rotation, a plurality of generally radially inwardly ex
outer member and adapted to abut said generally radial
openings therethrough spaced about said axis of rotation;
a plurality of generally radially inwardly extending mem
tending members bearing against said inside surface of
said annular outer member and adapted to abut said gen
member having a hook adjacent one side edge thereof and
erally radially extending friction surface, each of said
extending through a respective opening through said an
nular outer member; and spring means yieldably holding 20 generally radially extending members having a center of
gravity positioned to one side of said generally radially
the opposite side of each generally radially extending
extending friction surface, said generally radially extend
member in place against said annular outer member,
ing members bearing against said annular outer member
whereby said clutch mechanism can be quickly and in
at points spaced in one axial direction of the radial plane
expensively assembled.
12. In clutch mechanism and the like: an inner member 25 containing said center of gravity of said radially extending
members, and spring means biasing said radially extending
having a central axis of rotation and a generally radially
members in the opposite axial direction.
extending friction surface; an annular outer member hav
16. In a clutch mechanism and the like: an inner mem
ing an inside surface concentric with said inner member
ber having a central axis of rotation and having a gen
and rotatable relative thereto about said axis of rotation,
said annular outer member having a plurality of openings 30 erally radially extending friction surface; an annular outer
member having an inner surface concentric with said inner
therethrough spaced about said axis of rotation; a plural
member rotatable relative thereto about said axis of rota
ity of generally radially inwardly extending members
tion, said annular outer member having an annular groove
standing against said inside surface of said annular outer
extending around said inner surface; a plurality of gen
member and adapted to abut said generally radially ex
ly extending friction surface, each radially extending
tending friction surface, each radially extending member 35 erally radially inwardly extending members standing in
said groove of said annular outer member and adapted to
having a hook adjacent one side edge thereof and extend
abut said generally radially extending friction surface,
ing through a respective opening through said annular
each of said generally radially extending members having
outer member; and spring means connecting the opposite
side of each generally radially extending member to the 40 a center of gravity positioned in one axial direction from
the plane of said annular groove; and spring means biasing
edge containing the hook of the adjacent generally radi
said generally radially extending members in the opposite
ally extending member to hold said radially extending
axial direction.
members in place against said annular outer member,
17. In a clutch mechanism and the like: an inner mem
whereby said clutch mechanism can be quickly and in
expensively assembled.
13. In clutch mechanism and the like: an inner member
having a central axis of rotation and a generally radially
extending friction surface; an annular sheet metal member
having inside and outside surfaces positioned outwardly
45
ber having a central axis of rotation and having a gen
erally radially extending friction surface; an annular sheet
metal member having inner and outer surfaces positioned
outwardly of said inner member and rotatable relative
there-to about said axis of rotation, said annular outer
of said inner member and rotatable about said axis of 50 member being corrugated to provide alternate circum
ferentially extending valleys in said inner and outer sur
faces; a plurality of generally radially inwardly extending
alternate valleys in its inner and outer surfaces; a plural
rotation, said annular member being corrugated to provide
members, the outer end of each generally radially extend
ing member standing in an internal valley of said annular
valley of said annular outer member and the inner end 55 outer member and the inner end of said radially extending
members being adapted to abut said generally radially
of said radially extending members being adapted to abut
extending friction surface, said radially extending mem
said generally radially extending friction surface; hold
ity of generally radially inwardly extending members, the
outer end of each radial member standing in an internal
bers having a center of gravity that is positioned in one
doWn means loosely holding and pivoting said radial mem
axial direction from the plane of said internal valley in
bers against the surface of said internal grooves, said
radial members being biased against said friction surface 60 which the ‘outer ends of said generally radially extending
members are positioned; and means biasing said radially
of said inner member during rotation of said annular
extending members in the opposite axial direction.
member for a frictional drive therewith, and said outside
valleys of said annular member being shaped to receive
References Cited in the ?le of this patent
torque transmitting V-belts.
UNITED STATES PATENTS
14. In clutch mechanism and the like: an inner member 65
having a central axis of rotation and a generally radially
766,552
Sturtevant et a1 _________ __ Aug. 2, 1904
extending friction surface; a cup-shaped sheet metal mem
2,837,193
Wilder ________________ __ June 3, 1958
ber rotatable about said axis concentric with said inner
2,963,135
Weir _.. ________________ __ Dec. 6, 1960
member and having a sidewall portion having inner and
FOREIGN PATENTS
outer surfaces positioned radially outwardly of said inner 70
member, said sidewall portion being corrugated to provide
circumferentially extending grooves in said inner and
589,037
France _______________ __ Feb. 14, 1925
727,409
Germany ______________ .._ Nov. 2, 1942
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