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"
Sept. 24,1946.
2,408,301
' c. M. EASQN
CLUTCH
'Filed Jan. 22, 1945
5 Sheets-Sheet 1
'.
INVENTOR.
Clarerwe?i [6260721,
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BY
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gm““W
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s
v
_
4K
s¢pt. 24, 1946.‘
'
c. M, EASON ‘
'
‘
‘ 2,408,301
CLUTCH
Filed Jan. 22, 1945
‘
5 Sheets-Sheet 2
P.
I???
BY
@940
5
Sept. 24, 1946.
C. M. EASON
-
, 2,408,301
,
CLUTCH
5 Sheets-Sheet 4
. ‘Filed Jah. } 22, 1943
v
.
IINVENTOA/
Lia/‘57206171015072,
,
m’.
"
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>
@515
Sept. 24, 1946.
.c. M. EAS-ON
2,408,301
CLUTCH
Filed Jan. 22, 1945
5 Sheets-Sheet 5
‘
'
2,408,301
Patented Sept. 24, 1946
UNITED STATES' PATENT OFFICE
,
2,408,301
‘
I
'
CLUTCH
-
V
Clarence M. Eason, Waukesha, Wis.
Application January 22, 1943, Serial No. 473,208
~ 33 Claims.
(01.192-36)
1
2
This invention relates to clutches, and has to
dowith a combined clutch and brake mechanism.
My invention is directed to clutch means of
the character referred to. comprising cooperating
clutch and brake members including brake servo
means associated therewith, the parts being so
related and cooperating in such manner that in
Further objects’ and advantages of, my invention
will. appear from the detailed description.
.
Inthe drawings:
Figure 1 is a fragmentary side view of apress,
with clutch means embodying my invention ap
plied thereto;
I
Figure 2 is a front view of the press and the
clutch meansshown in Figure 1;
a the act of applying the brake the clutch is re
l;
leased, and in releasing the brake the clutch is
Figure 3, is a view, on an enlarged scale, of the
applied, assuring proper control of the operating
parts at all times. More speci?cally, ‘I provide
clutch means. and associated parts, shown in
front elevation‘at the lower half of this View and
an axially shiftable non-rotatable brake mem
in axial section at the upperv half of thispview,
certain parts in the upper half being shown in
ber and associated means whereby'axial shifting
elevation and certain parts being broken away;
Figure 4 is a fragmentary axial sectional view
of the'clutch means, partly broken away and in
section to show they cam rings and balls andas
of the brake ‘member in one direction into non
braking or releasing position effects the clutch
engagement, and axial shifting of the brake
member in the opposite direction into its opera
tive 0r braking'position effects the declutching
operation, the latter operation being assisted by
energy stored in the brake servo means by over
running of the shaft controlled by the clutch in
cident to the declutching operation.~v The clutch
is also preferably provided with self-energizing
' sociated parts, on an enlarged scale;
Figure 5 is an outer end view of the movable
20 inner cam ring for shifting the axially movable
brake member;
,
‘
Figure 6 is a sectional view taken substantially
on line 6—-6 of Figure 5;
.
>
Figure’? is a sectional view taken substantially’v
means which functions after initiation of‘ the
~
clutching operation to hold the friction clutch 25 on line 1-1 of Figure 4;
Figure 8 is a diagrammatic view illustrating
members, preferably cone members, in clutching
the relation between the clutch and the brake
contact under considerable pressure.
members, and the effect of the overrunning of
the clutch controlled shaft and associated parts;
Another important aspect of the present inven
tion is the use of the servo action for the inter
Figure 9 is a vertical transverse sectional view
of the bracket supporting the clutch operating
rupted rotating brake member, in order that the
initial force applied to the non-rotating brake
member may be held' to very low values, such, as
may be readily controlled by means of a conven
shaft, showing the over-center spring and pawl
means of the clutch control mechanism; and
tional foot treadle without causing undue fatigue
Figure v10 is a sectional view taken substantial
35 ly on line I0—‘l0 of Figure 9, certain parts being
shown in elevation and certain other parts being
Another important feature, of my invention is
of the operator.
"
7
that the clutching and declutching operation, ac
companied by the concomitant relative move
broken
away.
'
.
I have illustrated the clutch mechanism of my
invention as applied to a press of known type, by
ment of the braking member, out of and into co
operating braking contact, is effected by axial 40 way of example, to which it is well suited, though
it is to be understood that my clutch mechanism
is in no way limited to that particular use, since
it is suitable for many other purposes, and may
trolled'shaft is not necessary for effecting the
‘be applied to any use to which it is suited. The
clutching. and declutching operation. My im 45 press shown is a so-called back geared type where
‘ shifting of a non-rotatable brake member and in
such manner that rotation of the clutch con
proved clutch gives complete control of the driv
en shaft. throughout the entire 360 degrees of I
rotation thereof and renders it possible to stop
the shaft at any desired point in its rotation.
A
the clutch is located on- a secondary or back
‘shaft which, because of the gear reduction, makes
several revolutions to one revolution of the main
crank shaft. The clutch structure, however, can
further and important practical advantage of 50 very readily be applied directly to the crank shaft
and controlled by substantially the same type of
the clutchof my invention is that it may be ap
plied to a ?ywheel or analogous member of a
mechanism which is used to control my improved
press or like machine without necessitating‘ob- ‘
clutch when mounted on a back shaft.
jectionable changes in the ?ywheel and associ
ated parts,v particularly the bearings therefor.
In Figures 1 and 2 of the drawings I have shown
55 fragmentarily a portion of a frame 7‘ of a press
2,408,301
4
3
by means of the spanner wrench a distance equal
P of known type, this frame having mounted
to that between two adjacent openings. By re
peating that operation the flywheel 3| may be
adjusted to the desired extent in either direction
axially, for a purpose which will be explained
more fully hereinafer. An oil seal member 36,
of known type, is disposed within the inner end
portion of collar 2!}, con?ned therein between
therein, in a suitable manner, a rotatable crank
shaft l I. A bracket I2 is bolted or otherwise suit
ably secured to frame f at each side thereof and
extends upward and rearward therefrom. Each
of the brackets l2 supports a bearing structure 53,
and these bearing structures rotatably support a
back geared or secondary shaft M extending
transversely of frame 9‘ below and in back of the
crank shaft M. It will be understood that the
u
press is provided with a ram connected by a con
necting rod to the crank of shaft l l, and associ
ated parts, which have been omitted, for clear
ness of illustration and as not being necessary to
a clear disclosure of my invention. A spurpinion
I5 is keyed on one end of drive shaft Id, at the
opposite side of frame I to that shown in Figure
1, and meshes with a gear is secured onthecrank
shaft H at the same side of the frame, whereby
rotation of shaft J4 imparts rotation to the crank
shaft.
~
the outer race of the inner bearing 21, the re
taining ‘ring 23, and a snap ring 31 engaging in a
corresponding groove in the inner face of collar 29.
A tubular hub Ml, having a tapered bore cor
responding to the tapered portion l8 of shaft it.
is secured tightly on portion l8 of shaft I 4 by a
nut M screwing onto stud l9 and an associated
lock washer 42 held in pressure contact with the
outer end of hub 48 by nut 4!. Hub 40 is further
secured against rotation relative to shaft M by a
key 43 engaging in keyways in hub is and in por
20 tion I8 of shaft M, the lock washer 42 having a
-
Shaft Hi extends outwardly beyond'thebearing
structure 13 at the otherside of frame f, thatis,
portion struck therefrom and engaging in the key
way of hub 48 at the outer end thereof. ‘It will be
seen that hub 46 is effectively secured to shaft
M in a .manner to prevent relative movement be
at the side thereof remote from pinion l5 and
gear l8, and this portion of shaft 1.4 vis tapered 25 tween these two members, and the ‘inner end
portion of this hub is interiorly recessed to ac
outward'at i8 for a portion of its length, being
commodate the outer ‘end portion of the sleeve 22
provided at its outerend with a reduced threaded
of the outer bearing 2!. Hub 49 is also provided,
end 19. A comparatively heavy mounting collar
at its inner end, with an exterior circumferential
.20 is rotatably supported on shaft l4, adjacent
the side of frame .7" remote [from ‘pinion I15, by 30 ?ange 45 having, at ‘its outer circumference, a
?ange 45 extending outward lengthwise of hub
means of ball bearings, 2110f knowntype, each
48. A loose thrust washer Q8 preferably of non
having an inner race in the form of a relatively
metallic anti-friction material is interposed be
long sleeve 22 ?tting about shaft M, the sleeves
tween the flanged end 25 of the ?ywheel adjust
being disposed in endwise contact. A ?anged
ing sleeve 29 and the inner face of clutch hub
ring _2.3,is secured to shaft M, by one or more dog~
463. When the ?ywheel is rotating freely on its
point set screws, one of which is shown at 24%,
ball bearing-5 2!, ‘with the shaft and clutch sta
with its ?ange engaging the rabbeted inner end
tionary, there is a slight running clearance be
of the inner sleeve 22 ‘in endwise contact there
tween these thrust surfaces, but when the clutch
with. Collar ‘29 is provided, at its outer end, with
an inwardly extending ?ange‘25 extending about 40 is engaged and there is no relative rotation be
tween ?ywheel and clutch, the axial thrust reac
the outer end portion of the outer sleeve 22 and
tion due to ‘the servo strut action (to be later
in contact with the outer race of. the outer bear
described) is transmitted directly from the clutch
ing- 2!, vand is further provided, at "its inner end,
hub to the "?ywheel itself through this thrust
with an outwardly extending circumferential
washer. At no time is there any axial thrust on
.flange 26. The outer race of the outer bearing
the ball bearings 2|, due to clutch servo strut
12.! contacts the inner face of flange 25 and re
action. These bearings do'not take end thrustex
strains collar 28 against endwi-se movement in
cept the very small amount which might be re
ward along shaft 14, the outer bearing 2| thus
quired to maintain the ?ywheel and the driving
functioning as a ‘thrust bearing. Flange 26 is
provided with _a plurality of openings bored there~ .
clutch ‘cone in proper axial alignment.
in, one of which is shown at 2'5, these openings
regard, it will be noted that the thrust ring 48, in
its abutment against the outer end of collar
'25], cooperates with the outer bearing 2| for re
straining the mounting collar 243 and ?ywheel
3| against endwise movement in either direction.
preferably being disposed close together.
Two
of these openings, preferably two diametrically
opposite openings, receive ‘reduced studs 28 at
the inner ends of hollow plungers 29 *slidably
mounted in corresponding bores in the hub 13-3
of a flywheel 31 of suitable construction. Each of
the plungers 29 is urged inward by a coil com-
In this
A female ‘clutch member 52, having an out
wardly converging clutch surface, is suitably se
cured, conveniently by bolting, to flywheel .31 at
‘the outer side thereof. Clutch ‘member 52 co
ing therein at its inner end, the outer end of 60 operates with a male clutch member '53 having
spring ‘32 seating against a retaining ring 33 fit
riveted thereto a clutch lining .54, the latter’
ting in a corresponding annular groove in the
clutch member being bolted to a ?anged ring 55
pression spring 32 extending thereinto and seat
outer end of hub 30 ‘and bolted thereto. Ring 33
mounted‘ about hub 40, the exterior surface of
screws onto the threaded outer end portion 3-4
which is of stepped formation, as shown. A
of collar 20. It will be seen that by rotating col 65 ?anged collar 56 is secured to ring '55 by bolts,
lar '28 relative to ?ywheel 3!, the latter may be
one of which is shown at .57., which secure col
adjusted axially in either direction. For that
lar til and clutch member .58 ‘together, the bolts
purpose I preferably provide a spanner wrench
57 screwing into the heavy ?ange at the outer
having ‘two studs equal in thickness to ?ange 2t
end
of collar 56, and clutch member 53 being
and disposed to enter the two diametrically opp-o 70
rabbeted
for reception of the ?ange of ring 55,
site openings 21 which receive the studs 23 of the
the
collar
and the clutch member being thus ef
plungers 29. By means of the stud of the spanner
fectively secured together ‘with the ?ange of ring
wrench, the‘ stud 28 of the plunger may be dis
v55 clamped between the inner portion of clutch
placed outwardly so as to release ?ange 26 from
member 53 and the ?ange at the outer .end of
75
hub 30, after which the collar 20 may be turned
2,408,801
5
6
,
collar; 56,~ bolts 9 51. positively ‘securing the‘ parts
together;
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.
,
tarded' or blocked, will cause the balls .18. to move
into the shallower ends of the grooves‘ 15 and
16,-‘thus forcing cam ring 63 axially inwardly
.
~Ring:55 and flange 45 of» hub “are connected
by‘ 1. clutch: self-energizing mechanism’ comprising
away from ring 10 a distance somewhat less than
‘one-half the diameter of'the respective balls 18,
equal to approximately one-third of the diam
‘rigid ‘struts 60 of‘ dumbbell formation, constitut
ing drive transmission members, andtlengthwise
‘compressiblespring struts'6‘l constituting energy
eter- of the ball. At that time eachofwthe balls
18‘ is at the shallow ends of the two cam run
ways, as will be clear from Figure 4, and, if the.
transversely of the axis of shaft 14 in such direc
tion that they act under compression to transmit 10 brake member 61 is held against rotation, to block
further rotation of the cam ring 63, this will
the drive from ring 55, when the clutch member
cause the clutch 52,53 to become declutched and
‘53 is driven, to ?ange 45 of- hub 40, for rotating
will function to stop rotation of shaft l4‘. ;
the shaft I 4. Thestruts 5| are ‘inclined oppo
Brake member'?'l cooperates with a female
sitely to’ struts 69 and function both as energy
storingvmembers and as reverse drive'members, 15 brake member 89 of dome shape, provided at its
inner end with a rim 8| having an inner braking
aswill be ‘explained more fully later. In prac
tice' I usually provide three struts 60 and three , surface cooperating with the braking surface 68
of member 61. Brake member.80 is provided,
struts 6|, though a larger number of struts may
at its outer end, with an inwardly extending hub
be used if desired; Preferably, the struts are con
structed and connected to-ithe vpartsass'o'ciated 20 82 formed with an interiorkeyway 83 slidably
receiving a key 84 seating in agcorresponding
therewith in the manner shown and described in
‘recess in a bushing 85 ?tting within hub 82,: An
detail'in my copending applications, Serial No.
adjusting nuti8l, of: cupped shape, is threaded
279,899, ?led June -19, 1939, and Serial No.
on the outer end portion of bushing \85, this nut
232,588, ?led July‘ 3,‘ 1939, now issued as Patents
2,308,679 and 2,308,680,'respectively. Within the 25 being provided at its inner end with an outwardly
‘storing ‘members.’ ' The ' struts 60 are inclined
extending circumferential ?ange, 88
broader aspects of my invention, however, any
other suitable known type of struts may be used.
seating
against the outer end of hub 82. A ?anged re
taining ring 89 is secured to the ‘outer end of
brake member 89 by means of bolts, one ofwhich
7A cam ring 63 is mounted about the outer por
~tion of hub 40 outward beyond ring 55, in end
wise abutting relation thereto with an interven
isshown at 90, having socketed heads for recep
tion of a suitable socket wrench. Brake member
ing thrust ring 64. Ring 63 is provided with an
89 is held against turning movement, but is free
outwardly extending circumferential ?ange se- >
for axial shifting movement in either direction,
cured, asby means of bolts, one of which is
as will be explained more fully later. , Normally,
shown at'65, to hub 65 of a male‘brake member
vEi'l' having an outwardly converging braking sur 35 ?ange 88 of nut 81'” is clamped tightly between
'hub 82 and ring 89,‘ effectively securing these
face. provided by a brakelining 68 riveted or
parts together and restraining member, 80 against
otherwise suitably secured to the rim of member
axial movement relative to bushing 85. By
‘61. A second cam ring 19, provided with an inner
slightly loosening the bolts 90, sufficiently to re
‘circumferential inwardly extending ?ange ‘H, is
screwed on the outer end of‘hub 40, at 12, with 40 lease'the clamping action of ring 89, nut 81 may
be rotated by means of a suitable wrench, for
?ange ‘H in abutment with a shoulder 13 of hub
contact with, the outer end of ring 10 by nut 4| .
It will be seen that ring 19 is-thus ?xed on hub
49 ‘for rotation ‘therewith, and also provides an
which purpose nut 81 is provided at its outer end
with a hexagonal element 9|, rotation of the nut
serving to effect adjustment of brake member 80
axially along bushing 85 in the desired direction
abutment member ?xed against axial movement
and to the desired extent,'after which by-tight
‘40; '_'_Lock washer 42 is maintained in pressure
in veither direction,’ whereas the male clutch ’
_ :member '53 and the male brake member 57 are
ening the bolts 99 the parts are clamped together '
as before.
I
a
,
~A ?anged cap 93 is bolted to cam ring 10, at
50 the outer side thereof, and extends therefrom
outward about and across‘the outer end of shaft
as ,well as for turning movement thereabout, as
l4. Cap 93 is provided, at its outer end, with a
will appear more fully later. Lock pins 10a fur
hub 94 disposed coaxially with shaft l4, in which
ther secure 'ringflll‘against turning on hub 40.
is ?xedly secured, by welding or in any other
’ 1 ‘As is shown more clearly in Figures 4 and 7,
disposed in endwise abutting relation and are
‘mounted for axialjmovement relative to hub 40,
rin'gjlll is provided, in its inner face, with three
‘ suitable manner, the inner end of a stub shaft
equally spacedgrooves or recesses 15 increasing
95. A thrust ball bearing 96 is mounted about
the inner endportion of stub shaft 95, with its
inner race abutting the outer end of hub 94, this
jin'depth‘in the direction'of rotation of ring 19
‘with hub 40 and shaft l4, indicated by the arrow
‘a. Each of the grooves or recesses 15 is concen
tric with the axis of shaft l4, and these grooves
‘or recesses are equidistant from such axis. ‘The
Tring 63 is provided in its outer face with three
grooves or ‘recesses 16, corresponding to the
jgro'oVes or recesses 15‘ but disposed’ reversely
bearing 96 being disposed in an annular recess
60 in the inner face of a cam ring 91 shown more
clearly in Figures 5 and'6. Ring 91 is provided
with an outwardly projecting hub 98 having _
spaced slots therein providing outwardly extend
ing couplingv projections 99. A second cam ring
' ,‘theret'o, decreasing in depth in the direction of 65 II!!! is disposed about stub shaft 95 outwardly
rotation of'shaft 14 when that shaft is driven
thereof from ring '91, this second ring having in its
lthrough' the clutch‘ means, in a manner to be de
scribed? The'recesses or grooves 15 and 16 are
bearing structure I DI the inner race of which
arranged in cooperating pairs, the rings 63 and
'n‘llllb'eing properly related to that end, and pro
vide camrunways for steel balls ‘l8v mounted
‘therein. It will be seen that turning movement
,of. ring 10 in the ‘direction in which shaft I4 is
driven, voccurring while ' corresponding’ turning
"movement 'of the other cam ‘ring 63 is" being re
outer face an annular recess receiving a ball
iscon?ned between ring I90 and anut I02 thread
ed on a reduced screw stud I03 formed at the
. outer end of stub shaft ‘95, with an intervening
lock Washer I04. The cam ring N19 is, similar in
construction to thecam ring 91. and is provided
with an inwardly extending hub.v I05 which'is
appropriatelyv slotted to'provide coupling projec~
2,408,301
7
8
589 :of ring 9], whereby the rings \9?! .and I00 are
stantially spherical heads =Izl9. Heads I I9 receive
socket members I20 ?tting thereabout, securcd’to
coupled together for turning movement as a unit.
It will be seen that the acam rings 91 and ‘I00
*manner, conveniently :by nuts -I 22 screwing upon
are restrained against axial movement away from
each other, ‘by the thrust/hall bearings '96 and
the rods. The lower ends of rods I2 I have so
cured thereon, conveniently by nuts I23 screw
I01 and associated parts.
ing onto vthe rods, ‘eye members I24 which re
tions disposed :to engage ‘between the projections
‘the :upper ends of thrust rods I21 ‘in a suitable
The :bushing .85 is slidably mounted On the cam
‘rings 9.‘! and III!) for ‘relative axial movement in
ceive pivot pins I25 suitably secured, convenient
ring I08 is disposed within bushing 85, between
strain ‘brake member 80 against turning move
.grooves or recesses ‘H2 in the inner face of the
invention, any other suitable means may be pro
shift cam ring We. It will :be understood that
the grooves or recesses HI ‘and H2, and the
to the cam rings 97!, I!!!) in either direction.
.lyby nuts I26, to outwardly projecting arms ‘I21
either direction, .and this :bushing supports the 10 of a torque resisting yoke I28 bolted to a flange
I29 at the outer end of a bracket I30 bolted to
‘brake member ‘80 for relative axial movement in
frame I of the press. The thrust rods III re
either direction, .as above described. A cam shift
ment, while permitting axial movement of this
the rings 91 and mo, and is secured to bushing
either direction, there being slight
85 by set screwsIflS. The axial extent or width 15 member -80
looseness between the vmember-s [I9 and I20 of
of’ ring N38 is less than the axial distance be
the ball and socket connections, su?icient to pre
tween .the rings '9] and fill), as will be clear from
vent objectionable bindingin the shifting of brake
Figure 4. Cam :ring 91 is provided in its outer
.member #8. A brake operating rod I34 ispivoted
:face with three equally spaced grooves or de
pressions III which decrease in depth in the di 20 at its upper end to the lower end of brake lever
IrI B, as shown in Figure l, and extends therefrom
:-rection of rotation of shaft I4. The shift cam
to ‘an arm -~I3-I ‘pivoted at its lower end, at I32,
ring IE8 is provided in'i'ts inner face with three
to the ‘lower end of rod I34. Arm IE4 is secured
grooves or recesses H2 which are reversed rela
at its ‘upper end upon the outer end of a shaft
tive to the grooves or recesses III and, accord
ingly, increase in depth in the direction of rota 25 I33 rockably mounted through bracket I38. By
turning shaft I33 in proper direction the cam
tion of shaft Id. .At its outer face the shift cam
ring 91 may be turned in either directiondesired
ring 1'08 is provided with three grooves or re
for shifting brake member 8.!) axially into brake
nesses H3 disposed in the same manner as the
releasing position or brake setting position rela
grooves or recesses I I I, and cam ‘ring It!) is pro
vided in its inner face with three grooves or so .tive to brake member 61, in the manner above
described. Within the broader aspects of my
recesses .I I4 disposed in the same manner as the
grooves or recesses II3 and IM are disposed in . '
cooperating pairs, each pair of grooves providing
a cam'runway for a steel ball I I5 mounted there
in. A brake lever '! I6, provided at its inner end
with an annular head III, is suitably secured,
conveniently ‘by rivets 'I I8, to the inner end of
.cam ring 91.. It will be clear that ‘by moving
lever .‘IliB in one direction and thereby turning
ring ‘91 in :a direction opposite to the direction
of rotation of shaft t4, the shift cam ring IGB
will be .forced to the left, as viewed in Figure 4,
thus shifting the bushing I35 axially toward the
:left:and with it the brake member 811, moving the
latter away from brake member 61 into brake
releasing ‘position.
By turning the brake lever
in the opposite direction, and thereby imparting -
corresponding turning movement to the rings 78.?
and Hill, the cam shift ring 168 will lee-forced to
the right, ‘into the position shown in v*li‘igure 4,
vided [for imparting the desired turning movement
In Figure .8 I have shown diagrammatically
the parts in the positions which they occupy when
the braking means has been setand the clutch
member 53 has been shifted into declutched posi
ticn. The arrowa indicates the direction of rota- »
tion of shaft 14 when it is driven by the ?ywheel
s1 through the ‘clutch. Referring first to the
mode of operation which occurs when the clutch
structure is revolving, it will be seen that when
the brake member 80 is shifted toward the right
it engages brake member 5], thereby exerting
“braking action thereon, which retards or stops
further .rotation of thisinterruptable .brakemem
.ber ‘.67? almost immediately. Thereu-pon, the con
tinued rotation of the shaft I4 and the clutch
releasing servo v.cam ring 10 .acts through the servo
.balls'JB to shift the other cam ring 63 toward the
right. This shifts the driven clutch element ‘53
towards and into its clutch releasing position,
such being effected substantially entirely from
being then spaced from ring I09 a distance some
servo energy. As the shiftable cam ring 63 and
what ‘less than one-half the diameter of the
interruptable brake drum .6] shift toward the
respective balls H5. This movement of’ ring I08
right in this servo-actuated clutch releasing op
shifts the ‘brake member 83 toward the right, as
eration, the gcontrollable brake ring 8!) follows
shown in Figure 3, into engaging and brake set
up this shifting movement, .oontinuing to main
ting relation to the brake wmember El. Prefer
ably, the ‘ball receiving recesses or vrunways of 60 tain vits frictional pressure against the interrupt
..ab-le brake members]. The shifting of the driven
the rings 97 and Idli and IE8 are disposed sub
.clutch element 53 into clutch releasing position
stantially tangent to a circle struck from ‘the
.compresses-thesprings G-I ’ of the spring distended
axis of stub shaft I35 which, as noted, is vcoaxial
reverse acting toggle struts ,6I, storing energy in
with shaft I4, rather than being substantially
effective to .reengage the
concentric with the axis of the latter :shaft as (55 these springs which
.olu-toh .as soon as the controllable ‘brake .ring '80
are the recesses ‘I5, 15 :of rings ~63, ~13, since I
is backed away from the .interruptable 'brake
?nd that this'tangent arrangement of the grooves
drum 6] in the .clutch engaging operation. The
or recesses of ‘the rings 97 and Hi0 and I138 is
‘controllable brake .member 80 may be shiftedinto
more e?icient for obtaining the desired cammin'g
this clutch releasing position solely under manual
action.
energy, or it ‘may be actuated hydraulically or
Brake member 80 is provided, at diametrically
pneumatically, .or it may respond to an auto
opposite points thereof, with integral bosses :I‘i’i
matic one-cycle stop mechanism which can be
through which are secured :pins II;8, convenient
set toj-produce single trip operation .or repeating
1y by nuts screwing .on their inner ends, these
pins ‘being providedat their outer ends with sub
operation of the punch press,as desired. .In the
. 2,408,801
9..
10
embodiment illustrated, I have shown the. con;
trollable brake-member 80 responding tosuch a
in brake releasing direction and is completed by
the self-energizingtorque transmitted through
the toggle struts 60, the brake means being set
upon completion of the declutching operation
mechanism. As will be described later, this auto- ‘
matic mechanism "comprises a biasing spring I48
(Figures 9 and 10), which acts alternatively ‘to \
shift the controllable brake member 80 either
toward the clutch releasing position or toward
the clutch engaging position. When said brake
member is shifted toward its. clutch releasing
and being released upon completion of the
clutching operation, so that the brake means
retains control until the clutching operation has
been completed and until and'after completion
of the declutching operation. Further, .whenthe
position this Ibia'sing spring I48 is operative to
shaft I4 is'not being driven and is at standstill,
exert more pressure tending to movethebrake
as when the clutch is engaged and flywheel 3I
member in this direction‘ than the toggle springs
is not being driven, the shaft I4 may be clutched
M’ can exert in the opposite direction. Hence,
to. and declutched 'from'the ?ywheel 3| by axial
when the clutch. is released the brake member
shifting of brake member 80 in proper direction,
80 ;remains in this clutch releasing position, 15 ‘which is desirable to facilitate slight manual
shifted to the right in opposition to the pressure
turning of the crank shaft of the press formak
of the toggle springs'?l'. .
’
‘
'
' .
ing» adjustments or for other purposes. In thus
In this clutch releasing position of'the parts,
releasing the clutch with the shaft I4 at a stand
a braking force is also exerted on the driven shaft
still, the spring struts BI are compressed to ya
I4 from the. brake members 61, 80. vThis brak 20 certain extent, and ‘ upon movement of brake
ing force is‘effective through the cam ring 63,
member‘ 80 ' in .brake releasing direction, the
thrust washer 64, driven clutchelement ‘53 and
spring struts 6| areeifec'tive for‘ moving clutch
toggle struts to the driven shaft. The‘servo balls
18 are also operative‘ to transmit braking force
through the positive end stops atvthe'opposite
ends of the inclined runways 15, ‘I6 and through
the cam ring 10 to the ‘driven shaft I4. Thus,
braking retardation is continuously maintained
member 53 into cooperating contact with clutch
' member 52, though not under the high clutch
ing pressure available-when ‘shaft I4‘ is being
driven from ?ywheel 3I by the thrust then‘. ex
erted by the strut members ‘60, as vabove ex
~ plainéd. It is possible, howevergrto clutch? and
on the driven shaft l4 so long as the clutch re
declutch the driving member'ror' ?ywheel 3|? to
mains released. It should be noted that inthe 30 the'driven member or shaft I4 ‘when this shaft 'is
" above described clutch releasing operati0n,‘the
at standstill,’ which 'is- advantageous for the
extremely high force which the clutch releasing
servo mechanism 15, 16, ‘I8 can exert is capable
of freeing the clutch surfaces no matter how
reasons
stated.
,
.
'
~
7
'
T_
“
>While I preferably provide the cam balls and.
verse operation. of engaging‘ the -clutch,.the con
cam runways therefor for effecting axial shift;
ving of the‘brake member Wand of the‘r-ingv 63',
as. reducing friction, the invention is not limited
trollable brake member 80 is merely backed away .
to this form of brakeshi'fting 'means. 1_ Hydraulic
tightly they may be forced together. In .the re
from the int'erruptable brake member 61 in a
means, pneumatic means and "other forms 10f
shifting movement toward'theleft. This per
actuating ‘means may be employed for effecting
mits the compression springs 6|’ on the spring 40 the axial shifting of brake member 80 ,in'the
struts 6_I to shift the driven clutch element .53
desired direction and to the desired extent for
back into clutch engaging position, whereupon
the self-energizing struts 60 complete the'high
pressure engagement of the clutch surfaces. ‘The
clutch is now engaged and the brake released.
Referring now to the operation of the clutch
when the flywheel is not being driven, the oper
ation of releasing the clutch at this time is like
wise performed by shifting the controllable brake
member 80 to the right. This ‘merely transmits
corresponding shifting force to the then inert
brake drum '6'! which in turn is transmitted
through the cam ring 63 and thrust washer 64
to the driven clutch element 53. II‘hus, this driven
clutch element is shifted to clutch releasing posi
tion solely by shifting force imparted to control
lable brake member 80, and without any servo
‘boost. It will be seen that the clutching and
cooperation with brake member 6‘! in'the man
ner above described. vThe clutch member 53lmay
be slidably mountednon hub 40 and on flange
4301? this hub, by means of theringi 55 and collar
55, or, if desired, the clutch member 53 may have
a‘ ?oating mounting as provided by ‘the self
energizing mechanism comprising thegs/truts 60
and 6|. Preferably'I provide three struts60 and
three struts 6|, though the number of struts em.‘
ployed maybe varied within limits, but the mini
mum numberof struts ofeach kind should‘ be
three, as will beiunderstood.
>
p _ v
r
_.
-
As previously stated, any suitable means may
be provided for operating ‘the brake lever-in
proper direction to cause shifting of brake mem
ber 80 in the desired direction axiallyf I prefer
ably provide, however, the control means shown
declutching operations, accompanied by the brake
herein and which will now be described. Shaft
releasing and the brake setting operations, may 60 133 is ,rockably mounted in ball bearings‘. I35'
be performed at any -point in .the ‘rotation of‘
suitably supported by bracket I30. 'Anvarm' I36
shaft I4, and, accordingly, of the crank shaft
driven from. shaft I4, which is advantageous in
that rotation ofv shaft I4 ‘or of the crank shaft of
the press, through a de?nite angle or througha
complete revolution is not necessary in order to
effect either the declutching or the clutching
operation.
4'
‘
~
-' From what has been said ,it will be seen that
is clamped on the inner endv of shaft I33. and
extends downward therefrom this arm being pro
'vided, at its lower portion, with an integral sock
et element I31 and, below socket element I31,
with an integral eye I38 disposed substantially
perpendicular‘to socket element I31. » An upper
spring abutment head I39 is pivoted to eye.l38
by meansof ,a'pivot bolt ‘I40 secured thereto by
the clutch releasing operation, when shaft I4 is 70 ‘means of a nut and associated washer, and a
lower spring abutment head MI; is pivoted, by
being driven, is started by movement of the brake
'means of a bolt I42, to a boss I43 formed integ
member 80 in brake engaging direction, and is
rally with the web. elements I44 and I45 of
completed by servo energy derived from rotation
of shaft I4; and the clutch engaging operation
bracket I30,v de?ning with adjacent portions
is started by movement of the brake member 80 75 thereof a housing for arm‘ I36 an'd'the parts
2,408,301
11
associated therewith.
Bolt I42 is provided, at
its inner end portion, with a reduced stud I46
on which is pivoted another spring abutment
head I41. A relatively heavy compression spring
I48 seats at its ends against heads I39 and MI
about short studs or necks extending therefrom,
in a well known practice. A relatively light com
12
here I60, and con?ned between plunger I81: and
the outer end‘ wall of bore I68‘. In the position
of the plunger shown in Figure 10, handle I92
is engaged in notch I93, which is of less depth
than notch I94, thereby holding plunger I61 in
its retracted position. By pulling the plunger
outward slightly, so as to disengage handle I92
from notch I63‘, and. turning it so as to position
pression spring I50 has its lower end bearing
handle I62 in notch I194, the plunger I81 is pro
against spring mounting head I41 and has its
upper end bearing against another spring mount 10 jected, upon release of handle IP92, so as to engage
through the opening de?ned either-by the: lower
ing head I5I. The latter head is pivoted on a
stud I52 secured in the lower end of an arm I53,
the upper end of which is ?xed on a pin I54 rock
cooperating recesses" I85a, I'86a or by the upper
ablyv mounted. in a bushing I55 extending
through arm I36 above and at right angles to
socket element I31. A two arm. pawl I51 is
Whether the links‘ I'IIt, L82 are in their‘ upper
cooperating recesses I85; I66’, depending upon
positions (Figure 9) or intheir lower positions.
These locking functions will be later‘ described.
The links Ill and I82 are adapted to be pulled
?xedly secured by a set screw I58 on pin I54 at
downwardly by actuating means which is typical‘
the outer face of arm I36- Pawl I51 is disposed
ly illustrated by a foot treadle, although other
in the vertical. plane of two arms I59 and. I60
loosely mounted on a bushing I6I extending 20 actuating means may be» employed if desired.
This foot treadle is connected to the lower end
about reduced inner end portion I62 of shaft
of an operating rod I91 which has a laterally
I33, the latter, being‘ of. reduced diameter at the
bent upper end I91.’ adapted for alternative piv
portion thereof passing through the inner race
otal connection either in a hole I98 in the lower
of the ball bearing I35, and there being a re
taining ring I63 disposed about. shaft I33, be 25 end of link I1I, or in a hole I96a in. the lower end
of link I02; When the operating‘ rod I91‘ is
tween bushing IBI and the adjacent bearing
coupled to hole I98- of‘ link IN the control mecha~
I35. A snap retainer ring I64‘, seated in a cor
nism is thereby rendered operative to cause. a
responding groove in yoke I28, in which the
single stroke or one-cycle operation of the press
outer bearing I35 is disposed, contacts the outer
when the foot treadle is depressed. When the
race of this latter: bearing and restrains it against
operating rod: I01 is coupled to hole I98a of link
endwise movement. Arm I3I contacts the inner
I32‘ the control mechanism is thereby rendered
race of the outer bearing I35, and, in cooperation
operative to cause continuous repeating operation
with shoulder I66 of shaft I33, restrains this
of. the press when the. foot? treadle is depressed.
shaft against endwise movement. Ring I63 and
Referring now to‘ the locking functions of the
shoulder I61‘ of shaft I33 cooperate with the
recesses I85:.-—I‘05' and I85a'—t86a, when the lock
inner bearing I35 to restrain these parts against
ing plunger I81 is projected through the recesses
relative axial movement, the arms I59 and I60
I85a and‘ ISIia', with both links HI and I62 in
being con?ned between ring I63 and arm I36
their raised clutch. releasing positions, the clutch
and. restrained thereby against relative movement
axially of shaft I33. Arm I60 extends in a di 40 is thereby locked out so that the press cannot
have any type of operation. Conversely, when
rection forwardly of the press frame f, or to the
the locking plunger I81‘ is. projected through the
right as viewed in Figure 9, and arm I59 extends
rearwardly, or to the left, as viewed in Figure 9.
The forward end of arm I60 is pivoted at I10
to the upper end of a link I1I vertically movable I
through an opening I12 in web I44 of bracket
I30. Arm I59 is‘ pivoted, at its rearward end, at
I13, to a link I14, this link being vertically mov
able through an opening I15 in top web I16 of
bracket I30. Link I14: is: pivoted adjacent its ;
lower end, at I18‘, to. the rearward end of. a trans
verse link I19 pivoted at its iorwardend, at I80,
to link I1I. The arms I59 and I60 and the links
HI and I14 and I19 together constitute a link
age system substantially‘ in the form of a paral- .:
lelogram. A link I02 is pivoted at its upper end,
other recesses I85, I35, with both links HI and
I82 in their lower clutch engaging positions, the
clutch is held in engagement so that the crank
shaft Hi can be manually rotated; or inched
around for die setting purposes. “1
Link I'14'is pivoted at its upper end to a power
actuated trip rod I99 which in turn is pivoted
at its" upper end (Figure l). at 2.00 to av trip. lever
2011 pivoted at. a point intermediate its‘ ends on
a. stud 202 secured in. a boss 203 secured to the
front of the press frame j. A counterweight
205' is suitably mounted on trip lever" 2'0I for
wardly of pivot. stud 202,. and urges the rearward
arm 206 thereof upward into the path of a trip
at I83, to link I19 adjacent link HI, and depends
roll'er 201' mounted on a pivot. bolt adapted to be
from link I19 in position adjacent and parallel
with link HI, and extends with the latter
through opening I12. Link I1I is provided, at
its lower portion and in its rearward edge, with
two semi-circular recesses I85 and I85a, and link
I82 is provided, in its forward edge, with two
semi-circular recesses I86? and I86a. In the po
sition of the parts shown in Figure 9, recesses
, screwed. into any one, selectively, of a series of
I65a and I86a are in register and aligned with a
plunger I81. slidable. in‘ a. bore I88 in a boss I89 I
of bracket I30; Plunger I81 is provided with a
stem I90; extending outward therefrom through
a reduced bore I9.I. opening into‘ bore I88. The
outer portion of stem I90‘ is bent at right angles
to provide a handle and. stop element I62 for
engagement in either one of two notches I93 and
I94‘ in the outer end of boss I89.. A compression
coil spring I95 is disposed. about. stem I60, within
tapped‘ bores 208 in the hub 209' of a brake drum
2I01 keyed on crank shaft II‘ of the press;
It will be clear from Figure 9 that arm I36 and
compression spring I410 together constitute a
toggle, and‘ that the compression spring I48 is
an over-center spring. The pressure of this over
center spring is dominant over the pressure of
the toggle strut‘ springs GI’ and is capable of
disengaging the clutch in opposition to the action
of said latter springs. In Figure 9 the parts are
shown in the positions which they occupy when
arm 206 of trip lever 20I is in its depressed
position shown. in Figure 1. At that time one
arm- of pawl I51 is disposed in contact with and
beneath a shoulder I60a of arm I60;
Arm I36
is then held by compression spring I43 in its
position shown in Figure 9, and shaft I133 has
13.
2,408,801
14
been turned into such position that aim I3I'is
disposed as shown in‘Figure 1. The brake lever
.
and‘IBZ are then disposed as shown in Figure 9,
corresponding to a brake-engaging, clutch-re
of. the clutch mechanism is then in its position
in which the braking mechanism is set and the
leasing relation of the mechanism. If desired,
the links "I and I82 may be locked in this posi
tion by‘means of the plunger I81, thus locking
arm I36 ‘in itsbrake setting and declut'ching po
sition so asto guard against any possibility of
accidental operation of the press, as when mak
members of the clutch'are declutched. ' In the
brake setting and declutching operation the shaft
III overrunsto a certain extent, as does the crank
shaft I I of the press, ‘the overrun of the latter
shaft being sufficient to move the trip roller 201
I in‘g adjustments, changing die blocks, or" in any
clear of trip lever 206. When it is desired to again 10 other case where it is desirable to guard‘against
operate the press, the treadle is depressed, mov
unwantedoperation of the press:
a .
ing linkI1I of Figure 9 downward. That swings
Movement ‘of brake lever II6 in the brake en
arm I60 ‘downward about shaft I33 and, since
gaging direction of movement is not limited but
shoulder I60a of arm _I60>is in contact with one
continues during the follow-up'motion of the
arm of pawl I51 (this pawl annalso riding on 15 controllable brake member 80. Movement "of
the peripheries of the hub portions of the~arms
said lever in the opposite direction may be lim
I60 and I59) arm I36 is swung toward ‘the left,
ited by the associated means for shifting brake
as viewed in Figure 9, turning the shaft-I33 in
member 80 after the brake has been released, as
clockwise direction. When thepivot bolt’ I48 is
will ‘be readily understood. The over-center
in dead center position relative to pivot stud M2 20 spring I48 assures full'throw of said brake lever
and shaft I33, thearm I3I is in the positio'n‘indi-v "
in either direction and retains it in- either-its
cated by the line .r-x‘of Figure 1. _-When' bolt
brake releasing » and ; clutch applying position or
I40 passes beyond dead center position, the com- ‘
in its brake setting and clutchtrele'asing position,
pression spring I 48 expands, turning shaft 133
while also providing ‘yielding operating means
a further distance ‘in clockwise direction and 25 accommodating and compensating for wear of
moving arm I3I tothe-position"indicated bythe
line y—’y of Figure-1.11 The brake leve'r'is'then
in its clutch‘ engaging and brake releasing posi
tion,~thus setting thegclutch and releasing the
brake. During swinging movement of‘arm I36
parts in ya manner to assure proper and reliable
- operation of the brake-clutch mechanism. ‘ The
control means, comprising the toggle and spring
arrangement shown and described, is well suited
30 for use with the brake-clutch mechanism of my
“from its position shown in Figure 9' to its oppo
site- position, the secondary compression spring
I50 imparts turning movement to pawl I51 in
clockwise direction, through arm I53 and pin
I 54, spring I50 also'being an over-center spring
similarly to spring I48. -As a result of this turn
ing movement of pawl I51, combined with the
swinging movement of arm I36, when this latter
arm reaches its opposite position to that shown
in Figure 9, the other arm’ of pawl I51 is disposed 40
invention but, in its broader aspects, may be
used to advantage with other brake or clutch
mechanisms controlled by a lever having limited
throw in opposite directions, or to analogous
mechanisms.
’
l The socket element I31'of‘arm I36 is intended
for the reception of a suitable rod or handle 2I5,
beneath a shoulder I 58a of arm I59 and in con- ,
indicated in' dot and dash lines in Figure 9, in
sertibleythrough either one of twovopenings 2I6
in bracket I 30,? v'By means of handle 2 I 5, arm I 36
may be quickly swung into either of its two posi
tact with the peripheral hub portion of . this
tions for manually’engaging the clutch or re
arm and of arm I60, as before; It will be ap
parentthat when arm I36 has been moved into
leasing‘ thev clutch. Suf?cient leverage can be
exerted through this manual handle to release
‘its opposite position to that shown inv Figure 9,
the clutch even though the clutch‘ surfaces have
arm I50 is in raised position, with pawl I51'en
‘become tightly wedged together by'the self-en
ergizing action of the toggle struts 60. This
gagedbeneathshoulder I59a, and arm I60 is in
its lowered position, with pawl I51 out of contact
manual control is often advantageous for effect
with shoulder I60a thereof. In that position of
ing slight rotation of crank shaft I I of the press,
the parts, link "I is in its lowered position, and 50 or for inching the press, when making adjust
recess I85 thereof isin register with recess I 86.
ments, etc. Still further, the mechanism can be
of link I82, both of these links being lowered into
readily converted solely to manual control for
such position that the opening de?ned by the re
normal running byremov-ing the tripping roller
cesses I85 and I86 is aligned with plunger I81; , 201 and thenoperating the clutch in each direc
If continuous operation of the, press is desired 55 tion by the manual handle 2 I 5. '
at this time, the handle I92 of plunger I81 is
' Preferably, I provide a drag brake for retard
disengaged from notch I93 and placed in notch
ing any objectionable overrunning of the press
To that end, a ?exible brake
I94, permitting the plunger I 81 to be projected , ‘ crank. shaft I I.
through the'recesses I85 and 186, thus locking
band 220, provided with asuitable brake lining
the links HI and I82 against upward movement 60 22I, is passed about brake drum 2I0, ‘one end of
andlocking shaft I33 against turning movement
this band 220 being anchored, at 222,'to a short
so that arm I3I is, held in its brake releasing
arm 223 integralwith' a, bell-crank'brake lever
and clutch setting position.v The trip roller 201
224.pivoted at its'upper end on stud 202. The
may also be removed from the brake drum 2I0.
other end of brake band 220 is attached to a
If, on the other hand, cyclical operation of the
press is desired,‘the plunger I81 remains in its
retracted position. Under
_ such conditions, the
link 225 passing through a ?ared. opening 226 in
lever224', the outer or forward endportion of
this link being'threaded for reception of adjusta
treadle is depressed, causing'movement of-arm
ing nuts 221 and 228 screwing thereon, nut 228
I36 into its clutch engaging and brake releasing
having a rounded bearing surface contacting
position, after which the treadle maybe re~ 70 lever 220.v " At its lower end lever 224 is provided
leased. The cam shaft II then turns through a
with‘a' boss 229 through which is threaded an
complete revolution, at the. end of which trip
adjusting screw 230 on which is threaded a jam
‘roller 201 contacts arm .206 of trip lever>20‘I-,"forc
nut 23I. Th'e rearwardend of screw 230 bears
ing arm 206 downward and returning arm I36_to
against alug 232 of thepress frame 7‘. It will
its-position shown iniFigu'r‘e 9."~'The links I" 75 be apparent-that 'thisscrew 230' is a pressure
~,
2,408,301
15'
screw effective for adjusting the‘tension of brake
band 220, and that the brake band and its lining
22I cooperate with brake drum 2H)‘ for exerting
16'
said rotatable brake member. in said one direc
tion and in said opposite direction.
5. In a clutch, a driving member, a rotatable
a braking eiiect upon crank shaft H so as to
driven member, braking means therefor compris
of one such modi?cation or alternative construc
roller 201.. The same mechanism can be used by
clutched to and declutched from saididriven mem
ber responsive‘ to axial shifting of said rotatable
brake member in said one direction and in said
opposite direction, and means for enabling said
braking means to impose braking retardation on
said driven member through said self-energizing
mechanism.
reversing the attachment of the parts, as to the
links HI and I'M, making suitable provision for
driven member, braking means therefor compris
ing a rotatable axially shiftable brake member
prevent objectionable overrun thereof while not
and a cooperating non-rotatable brake member
objectionably interfering with rotation of the
axially shiftable into brake setting position and
crank shaft in the normal operation of the press.
brake
releasing position relative to‘said- rotatable
As above indicated, it will be understood that
brake member, means whereby said rotatable
changes in construction and arrangement of
parts of my invention may be resorted to with 10 brake member is shifted axially in one di
rection responsive to release of said‘ braking
out departing from the ?eld and scope thereof,
means.
and in the, opposite direction respon
and I intend to include all such variations,‘ as fall
sive to setting of said braking means, sup—
within the scope of the appended claims in this
plementary means comprising self-energizing
application,v in which the preferred form only of
my invention has been disclosed. As illustrative “ mechanism whereby said drive member is
tion, the above described operating relation
might be reversed so that the spring I48 would
be released by manual tripping transmitted from
the foot treadle and would be compressed by ~_
power tripping transmitted from the tripping
an increase of throw of the mechanism actuated
by'the tripping roller 261, and also reversing the
relative throw of the’ double-acting ball cam
mechanism 91, N30, I58, Ill-I I5,
I claim:
1. In clutch mechanism, the combination of
av driving member, a rotatable driven member, a
self-energizing axially shiftable clutch spring
biased to engage by shifting movement in one
6. In a clutch, a driving member, a rotatable
ing a non-rotatable brake member axially shift
able into braking position and brake releasing
position,and means actuatedby axial movement
of said brake member whereby releasing and set
ting of said braking means clutches and de
clutches said drive member to and from‘ said
driven member, and also releases and applies
braking force to and from said driven member,
7. In a clutch, a driving member, a. rotatable
driven member, braking means for holding said
comprising a servo action axially shiftable brake 35 driven member against rotation comprising a
non-rotatable brake member axially shiftable in
spring-biased to engage by shifting movement in
one direction into braking position and in the op
the other direction, the spring biasing force of
posite direction into releasing position, and means
said brake being operative tov overcome the spring
direction, and control apparatus for said clutch
biasing force of said clutch.
2. In clutch mechanism, the combination of a
drivingmember, a rotatable driven member, a
self-energizing axially shiftable clutch, spring
means operative to axially shift said clutch into
engagement in one direction, control apparatus
for said clutch comprising a servo action axially ‘
shiftable brake, and spring means operative to
axially shift said brake into engagement in a di
rection opposite to the direction of engagement
of said clutch, said last named spring means be
ing dominant over said ?rst named spring means. l.‘
3. In a clutch, a driving member, a rotatable
driven member, braking means for applying a
braking force to said driven member comprising
a non-rotatable brake member axially shiftable
into brake setting position and brake releasing .
actuated by axial movement of said brake mem—
ber whereby releasing and setting of said brak
ing means clutches and declutches said drive
member to and from said driven member.
8. In a clutch, a driving member, a rotatable
driven member, braking means for applying brak~
ing force to said driven member comprising a
non-rotatable brake member axially shiftable in
one direction into braking position and in the
opposite direction into releasing position, and
means whereby releasing and setting of said brak
ing means clutches and declutches said drive
member to and from said driven member, said
last means comprising a clutch member movable
axially in the same direction with the shifting
movement of said brake member.
9. In a clutch, a driving member, a rotatable
driven member, braking means for holding said
driven member against rotation comprising a
non-rotatable braking member axially shiftable
in one direction into braking position and in the
opposite direction into releasing position, means
60
4, In a clutch, a driving member, a rotatable
actuated by axial movement of said brake mem
driven member, braking means for stopping and
ber whereby release and setting of said braking
holding said driven member against rotation
means initiates clutching and declutching of
comprising an axially shiftable rotatable brake
said drive member to and from said. driven mem
member and a cooperating non-rotatable brake
ber, and biasing spring means operative to cause
member axially shiftable into brakev setting
the clutching and declutching operations initiated
position and brake releasing, position relative to
by said brake member to be completed.
said rotatable brake. member, means whereby
10. In a clutch, a driving member, a rotatable
driven member, braking means for stopping said
said rotatable brake member is shifted axially in
one direction responsive to release of said brak 70 driven member and holding it against rotation,
said braking means comprising‘ a non-rotatable
ing means and in they opposite direction respon
braking member axially shiftable in one direction
sive to setting of said braking means, and self
into braking position and in the opposite direc
energizing clutch means whereby said drive
tion into releasing position, means actuated'by
member is clutched to and declutched from said
driven member responsive to axial shifting of 75 axial movement of said brake member whereby
position, and means whereby releasing and set
ting of said braking means clutches and de
clutches said drive member to and from said
driven member when the latter is at standstill.
2,408,801
17
.tingand releasing of said braking means. ~
15., Ina clutch,‘ a rotatable shaft, a driving
clutch member, a hub ?xed on said shaft, a driven
only upon completion of the clutching operation
and said declutching operation being completed
clutch membermounted on said hub for relative
.only' upon setting of said braking means.
7
,18
clutching position in the brakereleasing opera
tion, and self-energizing mechanism whereby
said clutch member is movedinto clutching posi
tion and declutching position responsive to set
release andsetting or said braking means initiates
clutching, and declutching of said drive member
to vand from said driven member, andsupplemen
tary means whereby the clutching and declutch
:ingoperations initiated by said brake member are
completed, said braking means beingv released
axial ‘and turning movement, self-energizing
11. ,In a clutch, a driving member, a rotatable
.10 means connecting said driven clutch member and
driven member, braking, means for holding said
driven member against rotation comprising a
said‘ hub comprising drive transmittingstruts, an
abutment member ?xed on saidyhub, a brake
non-rotatablebrake member axially shiftable in
membenmounted on said hub-for“ relative axial
one direction into braking position and in'the f and turning movementvbetween- said abutment
opposite direction into releasing position, means ,5‘ member andsaid drivenclutch» member in end
actuated-by axial movement oi said brake mem
berpwhereby release and setting ofpsaid braking
meansinitiates clutching and declutching of said
bie brake~_member3axially shiftable into brakeset
driyemember to and fromsaid driven member,
to. said’, ?rst brake member, said second brake
and supplementary, means comprising servo
mechanism receiving rotative' energy from said
member moving said ?rst brake member axially
andfthereby moving said driven clutch member
rotatable driven member and arranged whereby
the declutching operations initiated by ,said
setting operation, andsaid self-energizing means
brake member are assisted by servo energy.
ting position and brake releasing position relative
axially into declutching position during the brake
moving said driven clutch member axially into
- ~
12. In combination,» a rotatable driving, mem
ber, a rotatable drivenvmemiber, a clutch for cou
pling said
.wise abutmentiwiththe, latter, and a non-rotata
‘25
clutching position and thereby imparting similar
l
.
' ' axial movement to said ?rst brake member dur- ‘
members ' together, self-energizing
ing the-brake releasing operation. '
I V
_
7
mechanism for actuating said clutch, and brake
.16. In anclutch, a rotatable'shaft, a‘ driving
means for controlling said self-energizing mech
clutch member, ahub ?xed on said shaft,.a
anism comprising an axially shiftable rotatable 30 drivenclutch member mounted on said hub for
brake member and a co-acting axially shiftable
relative iaxial , and turning. movement“v self -ener
gizing means ,connectingsaid driven clutch mem
non-rotatable brake member, said brake means
being-operative to apply¢braking retardation to
her and said hub comprising drive transmitting
said rotatable driven member through said ax
struts; and ‘oppositely related’ yielding energy
ially shiftable non-rotatable brake member when 35 storing struts, an abutment member ?xed on. said
hub, a brake member mounted on said hub 'for'
said
1-3;clutch
In' combination,
is released. a'rotatable
'
' ' driving mem~
, her, a rotatable driven member, a clutch there
between, self-energizing mechanism ‘for, actuat
ing'rsaid ‘clutch, said self-energizing mechanism
comprising two‘ cooperating relativelyv rotatable
self-energizing members adapted to have rela
relative axial and turning movement between
saidabutment member and said driven. clutch
member in endwise abutment with the latter, said I
40 brake member'andsaid abutment member hav
'' ing cooperating cam ,meanswhereby} said brake
memberl-ismoved axially in .a direction; toward
tive ‘axial, movement occurtherebetween. when
and-in a directionI away irom said driven clutch
one of; said self-energizing members is rotated
member responsive to turning of said brake mem
relatively tothe other, means for driving oneiof 45 ber in. one direction and in the opposite direc- '
said self-energizing members from said rotary
tion,» and anon-rotatablebréxke member axially
driven member, braking means for retarding ro
shiftable into brake setting position and brake re
tation of the ‘other self-energizing member, to
leasingyposition relative to said ?rst brake mem
cause'relative axial movement between said vself
' her, said second brakemember moving said ?rst
energizing, members, said braking means com 50 brake member axially and in cooperation with
said self-energizing means causing turning of
prising'an axially shiftable rotatablebrake mem
ber andv a co-acting manually controlled axially
said drivenvclut‘ch member and said ?rst brake
member in‘ said one direction thereby moving
shiftable non-rotatable brake member, means for
said driven clutch member axially into declutch
transmitting said relative axial movement to said ~
clutch for controlling the latter, and means en 55 ing position during the brake setting operation,
said yielding struts being compressed by over
abling said braking means to stop said driven
running of, said shaft after declutching and set
member and to hold it against rotationaiter re
lease of said clutch.
.
‘
'
ting of .thebraking means,’ said self-energizing
-14. In a clutch. a driving member, a rotatable ‘ _ means acting. to turnsaid driven clutch member
driven member, braking means for stopping said 60 and said ?rst brakemember in said opposite di
driven member and holding it against rotation,
said braking means comprising anv axially shift
able rotatable brake member and a cooperating
rection andto thereby ’move said driven clutch
into clutching position during the brake releas
ing operation.
'
non-rotatable brake member axially shiftable
_17_.. In‘ a clutch-Ma rotatable shaft, a ems
into brake setting position and brake‘releasing 65. driving cone clutch member having an outwardly '
position relative to said rotatable brakemember, ' converging clutching surface,- a hub ?xed on said
shaft, adriven male cone clutch member mount
the latter member being axially movable by said
non-rotatable member in the movement thereof
in brake setting direction, clutch means compris
ing a shiftable clutch member for clutching and,
declutchingsaiddriving member to and from said
driven member, said clutch member shifting ax
ially directly with and in the same direotionas 7
said rotatable brake member into declutching
position in the brake setting operation andninto 15,
ed on said hubfor relative axial and turning
movementcooperating with said female member,
self-energizing, means‘connecting said hubvan'd
said male member comprising drivevtransmitting
struts, an abutmentmember ?xedon saidv hub
outward from said male member, a‘male cone
brake- member mounted, on said hub for relative
axialla'nd turning movement between said abut
2,408,301
19
20
able relative to the other brake member into
ment member and said male clutch member, said
brake setting position and brake releasing posi
brake member having an outwardly converging
tion relative thereto and said other brake member
braking surface, a‘ cooperating non-rotatable fe
being axially shiftable with said one brake mem
male brake member axially shiftable into brake
setting position and brake releasing position rel
her in continued movement of the latter in brake
setting direction and in brake releasing direction,
ative to said male brake member, and means
whereby setting said braking means shifts said
male clutch member axially into de-clutching po
sition, said self-energizing means moving said
and means whereby setting and release of said
braking means shiftsv one of said clutch members
into declutching position and clutching position,
10 and applies braking force to the driven clutch
male clutch member axially outward into clutch
ing position in the brake releasing operation.
member in said declutching position.
231. In a clutch, a female’ cone clutch member,
a cooperating male cone clutch member axially
shiftable into clutching position and declutching
clutching position and clutching position, a pair 15 position, an axially shiftable male cone brake
member disposed in endwise abutting relation to
of axially shiftable cooperating cone brake mem
said male clutch member, a cooperating female
bers operative to apply braking‘ force to said
cone brake member axially shiftable into brake
driven clutch member, one of said brake members
setting position and brake releasing position rel
being axially shiftable relative to the other into
brake setting position and brake releasing posi 20 ative to said male brake member, the latter being
axially shiftable with said female brake member
tion, and means whereby setting and releasing of
in continued movement thereof in brake setting
said braking means shifts said one clutch mem
direction and brake releasing direction, continued
ber axially into declutching position and into
movement of said female brake memberin brake
clutching position.
19. In a clutch, a female cone clutch member 25 setting ‘direction shifting said male» cone clutch
member axially into declutching position and
having an outwardly converging clutching sur
applying braking retardation to said male clutch
face, a cooperating male cone clutch member ax
member for stopping rotation thereof, and sup
ially shiftable into clutching position and ‘de
plementary means whereby release of said brak
clutching position, an axially shiftabiemale cone
brake member disposed outward of said male 30 ing means shifts said male clutch member axially
into clutching position.
clutch member and having an outwardly con
24. Incombination, clutch means, brake means
verging clutching surface, a cooperating female
governing said clutch means comprising a rotat
cone brake member axially shiftable into brake
able axially shiftable brake member and a co
setting position and brake releasing position rel
ative to said male brake member, and means‘ 35 operating non-rotatable axially shiftable brake
member, control mechanism for controlling said
whereby setting and release of said braking
latter brake vmember comprising a shift lever
means shifts said male clutch member axially
18. In a clutch, a pair of driving and driven
cone clutch members, one of said members being
axially shiftable relative to the other into de
with limited movement in opposite directions into
into‘ declutching position and clutching position,
two operative positions, manual means for’ mov
said latter means enabling said brake members
to hold said male clutch member against rota
tion when said clutch is disengaged.
ing said lever in one direction a distance less than
its full throw, power means responsivetothe en
gagement of said clutch means for moving said
lever in the opposite direction a distance less than
its full throw, andv yielding means for complet
ing the throw of said lever in either direction.
25. In combination, clutch means, brake means
governing said clutch means comprising a rotat
able axially shiftable brake member and a co
.
20.. In a clutch, a female cone clutch member,
a cooperating male cone clutch member axially
shiftable into clutching position and declutch
ing position, an axially shiftable male cone brake
member, a cooperating female cone brake mem
ber axially shiftable into brake setting position
and brake releasing positionrrelative to said male
brake member,’ the clutching surfaces of said
clutch members and the braking surfaces of‘ said
brake members being similarly inclined, and
means whereby setting and release of said brak
operating non-rotatable axially shiftable brake
member for holding it against rotation in said
two operative positions, a rockably mounted
shaft, an operating arm secured on said- shaft
member, control mechanism for controlling said
latter brake member comprising a shift lever with.
limited movement in opposite directions into two
operative positions, a rockably mounted arm con
ing means shifts said male clutch member axially
nected to said lever, toggle means connected to
into declutching position and clutching position,
and applies braking retardation to said male 55 said arm, and mechanism for turning said arm in
7 either direction beyond dead center position of
clutch member when in declutching position.
said toggle means comprising power driven means
21. In a clutch, a pair of cooperating driving
responsive to said clutch means for effecting the ‘
and driven cone clutch members, a pair of coop
turningin one direction, said toggle means com
erating cone brake members one axially shift
able relative to the other into brake setting po so prising an over center spring effective for com
pleting the throw of‘ said arm and said lever in
sition and brake releasing position relative there
either direction.
to and said other brake member being axially
26-. In combination, clutch means, brake means
shiftable with said one brake member in contin
governing said clutch means comprising a rotat
ued movement of the latter in brake setting di
rection and in brake releasing direction, and 65 able axially shiftable brake member and a co
operating non-rotatable axially shiftable brake
means whereby setting and release of said brak
member, control mechanism for controlling said
ing means shifts one of said clutch members into
latter brake‘ member comprising a shift lever with
declutching position and clutching position, and
limited movement in opposite directions into
also applies braking force to the driven. clutch
declutching position.
_
22. In a clutch, a pair of cooperating driving
having operating connection to said lever, toggle
and driven cone clutch members, a pair of co
operating cone brake members, one of said brake
means connected to said shaft, and manual
means and power means responsive to said clutch
75 means for turning saidshaft in either direction
members being non-rotatable and axially shift
21
2,408,301
beyond dead center position of said toggle means,
22
responsive to the engagement of said clutch ,
the latter comprising an over center spring ef
fective for completing the throw of said arm and
said lever in either direction.
27. In clutch mechanism for punch presses and
the like, the combination of a driven shaft, a
means for» imparting endwise movement to the
other of said side links, and means cooperating
with said arms and with said shaft for rocking
the latter in opposite directions responsive to
clutch controlling the rotation of said shaft, brake
31. In combination, clutch means, brake means
governing said clutch means comprising a rotat
means governing said clutch comprising a non-'
endwise movement of said side links.
'
rotatable axially shiftable brake member, a foot
able axially shiftable brake member, and a co
treadle for shifting said brake member in one 10 operating non-rotatable axially shiftable brake
direction for initiating the engagement of said
member, control mechanism for controlling said
latter brake member comprising a rockably
shaft for shifting said brake member in the oppo
mounted shaft, two arms loosely mounted about
site direction for effecting the disengagement of
said shaft projecting oppositely therefrom, an
said clutch, and automatic control mechanism 15 end link substantially parallel with said arms,
clutch, power means actuated by said driven
responsive to said foot treadle and to said power
means for controlling the shifting of said brake
member, said control mechanism comprising a
?rst actuating member towhich said foot treadle
two side links. connecting the outer ends of said
arms to said end link forming therewith a paral- ,
lelogram, power means responsive to said clutch
means and manual means for imparting endwise
is adapted to be connected for producing single 20 movement to either of said side links, means co
stroke operation of the punch'press, and a sec
operating with said arms and with said shaft for
ond actuating member to which said foot treadle
rocking the latter in opposite directions respon
is adapted to be connected for producing repeat
sive to endwise movement of said side links, and
ing operation of the punch press.
means for locking said parallelogram against
28. In combination, clutch means, brake means 25 movement in either position of said shaft.
governing said clutch means comprising a rotat
able axially shiftable brake member and ‘a co
operating non-rotatable axially shiftable’ brake
member, control mechanism for controlling said
' 32. In combination, clutch means, brake means
governing said clutch means comprising a non-,
rotatable axially shiftable brake member, con
trol mechanism for controlling said brake mem
latter brake member comprising a rockably
30 ber comprising a rockably mounted shaft, toggle
mounted shaft, toggle means comprising an oper
‘ means comprising an operating arm secured at
ating arm secured at one end on said shaft and
an over center compression spring connected to
one end on said shaft and an over center com
pression' spring connected to the other end of said
arm, two arms loosely mounted about said shaft
the other end of said arm, linkage and pawl
means for turning said shaft in either direction 35 projecting oppositely therefrom, an end link be
beyond dead center position of said toggle means,
low said shaft substantially parallel with said
said spring completing throw of said shaft in
arms, two side links connecting the outer ends of
either direction, manual means for actuating said
said loosely mounted arms and said end link
linkage and pawl means in one direction, and
forming therewith a parallelogram, a pawl piv
power means responsive to said clutch means for 40 oted on said operating arm, said pawl and said
actuating said linkage and paw] means in the
loosely mounted arms having cooperating ele
other direction.
ments for turning said shaft beyond dead center
29. In combination, clutch means, brake means
position of said toggle means in one direction
governing said clutch means comprising a rotat
when one of said side links is moved downward
able axially shiftable brake member and a 00
and in the other direction when the other side
operating non-rotatable axially shiftable brake
member, control mechanism for controlling said
latter brake member comprising a rockably
mounted shaft, togglemeans comprising an oper
link is moved downward, an over center compres
sion spring for positioning said pawl in cooperat
ing relation to the respective loosely mounted
arms responsive to movement of said operating
ating arm secured at one end on said shaft and 50 arm from one position to the other, manual
an over center compression spring connected to
means for actuating one of said side links, and
the other end of said arm, means comprising a
power means responsive to the engagement of
linkage parallelogram distortable from a ?rst
said clutch means for actuating the other of said
position to a second position for turning said
side links.
a
shaft in either direction beyond dead center po 55
33. In combination, clutch means, brake means
sition of said toggle means, manual means for
governing said clutch means comprising a non
actuating said parallelogram in one direction,
rotatable
axially shiftable brake member, control
power means responsive to said clutch means for
mechanism for controlling said brake member
actuating said parallelogram in the opposite di
comprising a shift lever with limited movement
rection, and means for locking said linkage par 60 in opposite directions into two operative posi
allelogram against distortion in either of its said
tions, an operating shaft connected to said lever,
positions.
an arm secured to said shaft, an over center
30. In combination, clutch means, brake means
spring connected to said arm effective for com
governing said clutch means comprising a rotat
pleting throw thereof in either direction, means
able axially shiftable brake member and a co 65 for turning said arm in one direction beyond
operating non-rotatable axially shiftable brake
dead center position of said spring, and power
member, control mechanism for controlling said
driven means responsive to the engagement of
latter brake member comprising a‘ rockably
said clutch means for turning said arm in the
mounted shaft, two arms loosely mounted about
other direction beyond dead center position of
said shaft projecting oppositely therefrom, an 70 said spring, said arm having a socket element
end link substantially parallel with said arms,
disposed substantially transversely of said shaft
two side links connecting the outer ends of said
- for reception of a handle for turning said arm
arms to said end link forming therewith a paral
manually in either direction.
lelogram, manual means for imparting endwise
movement to one of said side links, power means 75..
CLARENCE M. EASON.
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