7Ho- 882,9l1.
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PATENTED MAR. 24, 1908.
T. B. RICE, JR.
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UNITED STATES PATE-Nr OFFICE.
,THOMAS_B. RICE; JR., OF PHILADELPHIA, PENNSYLVANIA.
Specnication ofLetters Patent. ' '
Patented. March 24. 190B. '
v
Application nien september 25, 1905. . serial No.=27s,911.
l material of which 'theclutch parts are formed,
and which can readily be replaced as seen.
The face 22 of the friction material 20 is
citizen of the United States, residing in the
- _ Toall whom it may concern:
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' - ' 1' _Be it known that I, THOMAS B. R1cE,.Jr., a
city and county of Philadelphia, State of adapted to make contact with the ad'oining 30
face -of the web 4,.and the face 23 of riction
I ` l5’. Pennsylvania, have invented a new and use
ful Clutch, of vwhichfthe following is a speci 4material 21, is adapted to make contact with
the adjoining- face of anannular band ring
_ñcation
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In a clutch -mechanism it is quite desirable
_to have the one clutch member embraced be
or disk 24, which constitutes a gripping mein
ber and which is movable longitudinally of 05
_10 tweenl apair of the opposite'ly movable mem .the shaft 9 by means of-serews or studs 25.
bers in order that .firm‘ ri in action maf These are adjustable _ therein, beingy threaded
at 26 and being turned by means of a span
_ _Í A further purpose of my invention is to ner wrench engaging the spanner holes 27.
make the time and'extent ~‘of theclutching The heads 28 of' these screws are within _the 70'
range of movement of a cam 29 upon the
v 15 action adjustable.
A- further purpose of my -invention is to. links 39 which are supported at this point by
rovide a novel construction fof gripping jaws pins 31, 'held by ears 30, as hereinafter de
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- scribed, to revolve with the end portion 7.
or a clutch of the kind described..
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A _further purpose of my invention is-'toY
l2'() support and Vguide one oftwo-shafts during
sleeve '35, said links being vsultably propor
-t further consists of other novel features longitudinal -movement of said Vsleeve by
4the clutching action or movement, when be
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clutched or released,
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tioned and positioned in such manner that
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_ . of construction, all as will be hereinafter fully
25 shown and described.
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The links 39 are pivoted at 33 to-linksA 34, 75
which at their otherl ends are pivoted to the '
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movement of the collar 36 will cause the 80
cams 29-_to -bear upon screws 25, forcing' the
The figure represents a longitudinal section ring 24 inwardly. The end of the pulley is
through the center of a clutch-embodying partially closed by a ring 37 having a iiange
my invention.
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38 thereon, which ring is screw> threaded into
said flange 5 and which is provided with' 85
30 manner and attached by a key 2 to theeollar guiding apertures forv the screws 25, sup
f3 of one member of my clutch,-which. is the ports the ears 30 and at the same time` pro
longitudinally stationary member and which tects structure from mechanical interference
is su plied with an outwardly extending and keeps it clean. It makes it possible to
.annu ar'web ‘4, at the outer end of which is -retain A'any desired lubricating or cooling 90
_
1 1 designates a shaft rotated in‘a'ny suitable
fluid within the clutch, which‘may be in-_ ’
in both directions as shown, sub-' serted through openings 39X and _40, channel
35 locaàted a preferably cylindrical flange 5 eX
ten
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stantia y parallel with the shaft, and ro
41 keeping these constantly in connection.
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_viding a bearing face 6 for any .suitable `_ elt A ring 42 'is ñxed to shaft 9 _in any suitable
when itis desired to apply the power atthis way and interposed between it and the 95
40. point. The end portion 7 is internally screw l_sleeve 35 is a spring 43 which provides for
the recovery or release of the movable ring
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9 designates the _shaftto which it is intend 24 to release the clutch. Upon the shaft
ed t0 impart rotary motion, which shaft 9 9 on opposite side of the sleeve 35 I place a'
threaded at 8.
_ terminates _in a reduced extension or neck 10, ring 44, which acts as a stop for the move 100
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45 adapted to fit within a recess -11 in the end of ment of said sleeve 35.
I provide _an aperture 45 in communica- -the shaft 1. The second member 1_2'of -my
clutch is> splined at 13 to said shaft 9 so as to tion with the‘space or recess~ 11 which is
have movement thereon, and, has extending suitable for the, reception of lubricating
outwardly therefrom, 'an annular web _15
fluid.
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105
I lock the parts 7 'and 37 by interposing a
50 having oppositely extending flanges .-16 and
' 17 , providing, on the inside thereof, seats 18 screw 42>< between the threads thereof at
Äand 19 for annular bearing faces 20 and21,~
any suitable point.
which form oppositely facing friction _`sur-„
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" A sleeve 46Ysecured to the shaft 9 limits
faces each shown as formed' of wood but ca_- ‘» 'the motion ofv member 1 2 in a lateral direction. _11.0
The operation 'is as follows :_i-The parts
55 pable of substitution by any suitable'friction
__ material which wears more «rapidly than the _ _are normally in such positionthat the cama.
2
s'eaeir/ l
y ‘jupon the Jlinks- 39 do not engage-'With the ordinarily'nearly the same, but the es-itions
screw heads.> The screws are so adjusted between which. movement takes p ace will 50
as to secure the necessary extent of move ~evidently vary with the amount of wea-r upon
10
ment of the annular ring 24 and at the limit the wooden or4 other frictionf'surfaces,v and
of the motion, to engage the web 15, with consequently the portions >sf the cams en
its two friction surfaces, with the web 4 withV gaging with the screws will vary, necessitat
suflicient rigidity to make them revolve in ing a slightly different 'degree of compression
unison. By movement of the sleeve 35 ofthe spring 43.
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toward> the friction surfaces, the cams upon
y,"Nhenever thewear uponthe friction sur
55
the links 39, force the screwsand therefore faces requires, they screws may be loosened
the annular band 24 inwardly, causing slight m the rmg- 24 tol extend the reach offthïis
frictional engagement first and ultimate oom
plete gripping contact. The shaft 9 -is free
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ring within the clutchand take up the wear.`
60
Having thus described my-invention, what
to move ongitudinally to a slight extent and l claim as new and desire to secure by Let
.1,5 without necessarily moving the member 12 ters Patent, isi-
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with it. The splim'ng insures that the mem
, 1. In a friction clutch, a longitudinally
ber 12 rotate whenever the shaft rotates stationary member, a ring carried thereby,
and at the same rate. The sleeve 46 limits screws freely- passing through said ring, a
this motion of member l2 longitudinally frictiona‘l ring carried by said screws and ad~
65
20 and prevents the shaft from being entirely justable thereon, a longitudinally movable
removed _from the member 12 by the'spline member, a web extending therefrom between
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contacting with the sleeve 46.
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said* stationary member and said frictional
During a large portion, if not all of the ring, independent annular bearing faces ex-_
longitudinal movement ofthe shaft 9, the tending entirely around the faces of said
reduced end of this shaft is in engagement web on each side thereof, and means for
with the walls of the recess 11 of the shaft in
actuating said frictional ring for causing the
alinement therewith, which guides `the gtwo annular bearing faces to be engaged by
clutch in its movement and adds to the ri -saidfstationarymember and said frictionalz"l
gidity of the >friction joint formed by pre lringl
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30 ventm side vibration thereof. There will _yt 2;. In a frlctional clutch, a longitudinally
norma ly be suflicient oil in this recess 11 to `»stationary member, a ring carried thereby,cushion the movement of thev shaft.- The „screws freely passing through said ring, a 80
movement of the sleeve 35 is considerably frictlonal ring carried by said screws and ade
in excess of that of the shaft com ression Yjustable thereon, a longitudinally movable
35 s ring 43 and using this spring to rep ace the
member, a web extending therefrom ` be
slbeve 35 after release of the clutch, the ulti
tween-said stationary member and said fric- ‘
mate limit of movement of the sleeve 35
being set by the stop 44, the extent of
tional ring, op ositely extending flanUes 0n
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movement of 24 is not absolutely uniform.>
4,0 The definite limit to such movement may be
set as shown in the drawings, by the engage,
ment of the heads of the Iscrews with the ad
oining metal, but ordinarily these screw
>heads will not come into engagement with
45
the metal. Because the ring 24 will recede
from the joining frictionl parts ordinarily
just suflicient to free from contact thereu
with, theextent of movement of the ring _isl
said web annuiar bearing faces on-eadh side
.85
of said web and seated against said flanges,
and means for actuating said frictional ring
for causing the two annular bearing faces to
»be engaged by said stationary member and
said fric-tional ring.
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' T. s. mon, JR..
/r ÑVitnessesv:
R. H. LUNT,
T. L. Bam-uri. ~
90