close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2128013

код для вставки
1
Aug. 23, 1938.
w. H. PARNELL
'
2,128,013
BRAKE
Filed March 12 , 1937
s Sheets-Sheet ' 1
[MWWE
MMLKiLJi -W
INVENTOR
WALTER‘ 1v, FAFMELL
BY
ATTORNEY.
Aug. 23, 1938.
W. H. PARNELL
2,128,013‘ “
BRAKE
Filed March 12, 1937
3 Shuts-Sheet 3
?ivamoxp
W047i}? h’. PARNELL
,BY
ATTORNEY. /
Patented Aug. 23,1938
'
2,128,013
UNITED?‘ STATES PATENT‘ ‘OFFICE
BRAKE"
~ Walter H. Parnell, Brooklyn, N. Y., asslgnor of
one-half to Jacob Silverstein, New York, N. Y.
Application March 12, 1937,. Serial No. 130,460 "
10 Claims.‘ (01. 188-2)
This invention relates to brakes.
' hereinafter described. The 'rear axle housing
The objector the‘ invention is the production _44 is indicated with the exterior thread 45 at one
ofa brake which travels in a direction opposite
to the member with which it coacts.
The second object ofthe invention is the'pro
duction of a brake which revolves when func
tioning.
'
v
i
k
.
'
a
The third object of the invention is to pro
duction of a brake which avoids the sudden
10 locking thereof and thereby avoids the skidding
of
a
vehicle.‘
.
~
.
i
i
i
The fourth ‘object of the invention is the pro
duction of a revolving brake, which contacting
with a rotating drum, provides increased fric
15 , tional contact with the drum in an interval of
time.
'
The fifth object of the invention is the pro
duction of a moveable brake, which is not only
applicable to the brake drum of a vehicle, but
90 which can actwith a moveable object‘having a
that
surface.
‘
_
'
In the accompanying drawings Fig. 1 shows a
partial side elevation 01' an exempli?cation of a
revolving brake, with one of the rear wheelsofa
g5 vehicle to which it is attached, and sections'of
‘ Fig. 2 on the line i, I and la, la; Fig. 2 repre~‘
sents a section oi Fig. 1 as on the line 2, 2; Fig. 3
end thereof. The said housing 44 has the wall 46
at right angles to its longitudinal axis and from
the latter extends the drum 41, which latter with 5
the said wall 40 provides a housing for the’ mech
anism of the brake: ‘A supporting collar‘ 48 with
adjusting openings 42a, of_ which one is shown,
engages the thread, 45 of the axle housing 44.
In the drum 4'! is indicated an opening 49 for
adjusting the lift rod‘ J50 to be hereinafter
described.
a
a
A cover plate 50 is detachably fastened to the
drum 41, by means of theboits 5i._ A'gasket is
shown at 52 and is positioned between the said
cover plate“ and thedrum 41. The saddle 54 is
integral with the housing 44. Atop plate is shown
at 55 and a spring of the vehicle is shown at 56.
The usual U bolts 5'! connect the axle housing 44,’
the saddle 54 and the top plate55.
'
» I _
A stationary supporting barrel 60, at one end
has the disc 61, integral therewith, and bears upon
the collar 48 ‘at’ its other end; An oil hole 62 in
20
the barrel 60 connects with the oil’ hole 63 in the
disc 8i. A screw plug 04 is indicated at one end of the oil hole‘82 and an oil cup 65 is'shown at the
outer end of the oil hole 62. Openings 66 extend ‘
indicates a section 01 Fig. l on the line 2, 2;‘ Fig. ' from the ‘outer circumferential face of the barrel
4 shows, a fragmentary portion of Fig. 2 on s.
a reduced scaleand diagrammatic portions of the
80 and lead to the hole 82. Apairof supporting
brackets 80 and a guide bracket 10 having the lug 30
brake of the invention; Fig. 5_ is a plan view of an ' "H with an opening extend from the disc 6|.
7
oil guard disc and Fig,~6 shows a sectionof Fig. " A‘ roller bearing housing 12 is indicated in
5 on" the line B; 6.
Reierringto Figs. 1 to 4 inclusive, the revolving
3‘ brake is indicated asrapplied to the rear‘ of a
motor vehicle. The rear axle of the vehicle is
shown at 20 and one of the-rear wheels isindi~
cated at 2i. The hub 22 of. said rear wheel'is in
dicated with spokes, one of which is indicated
40 at 23. The wheel 2i having the tire 2la is keyed‘
to the shaft 20 by means of the key 24.- The hub
plate 28 is indicated with the threaded sleeve 29
which supports in threaded engagement the hub 7
cap 30, which encloses the nut ll of the axle 20.
(5
One of. the brake drums of the rear wheels of
the vehicle is ‘indicated in its entirety by the
‘numeral 35. v'Each brake drum 35 at its inner
end has integral therewith the supporting ?ange
threaded engagement with the axle housing 44,
and a retaining pin 14 looks the housing 12 in
operative position. A detachable clamping ring
15 is bolted to the housing 12. The ring" has. '
integral therewith the tapered bearing surface a
11. The races of the roller bearing are indicated
at 10 and 10 for the roller bearings 80., A washer
Ii encircles the axle 20 and bears between the
roller bearings 80 and the hub 22. _The disc 6| is
fastened to the wall 40 of the rear axle housing 44
by the bolts 82.
_
.
,
A sleeve 83 having the annular ?ange 84 is I
journaled on the stationary supporting barrel 60,
and an annular plate 85 bears against the ?ange
84. A stop collar 08 is fastenedto the barrel 60,
by means of the set screws 89, at one end of the
sleeve 53, and a stop collar ‘90 is in threaded en‘
31, and at its outer end ‘is shown the clampingv
50 wall 38. Rivets 39 connect the wall 38, hub 22 gagementwith the other end clothe barrel 60.‘ A ‘
and the-plate 28, and the bolts 40 connect the ‘ pin 93 locks the collar 90 to the barrel 60-and __a
wall 38, the spokes 23 and the hub plate 28'. 7
set screw “bears against the pin 93.
I
An internal ring‘ gear 42. is bolted to ‘the
- A thrust collar, I00 is slidably supported on the
‘flange 31 by means of the bolts 43, and the said '
rotating‘slee've 82, and a pair of feathers IOI are '
“ ring‘gear 42 inesheswith the pinions I59, to be lllli?rpoled between vthe sleeve 83 and the thrust
collar‘ I00. The latter has integral therewith the
circumferential ?ange I02. The thrust collar
ring I 04 bears on the outer circumferential sur
face of the thrust collar I00 and against the
inner face of the ?ange I02. A pair of diametri
cally opposite pins I00 extend from the thrust
collar ring I04. A lug I00 extends from the
thrust collar ring I04, and an adjusting pin I01
has the clamping nut I01a in adjustable threaded
10 engagement with the disc 0| and passes through
the wall 40. The pin I01 bears against the lug
I00. A pair of guide brackets I00 each having'a
guide slot I00, with the tapered openings IIO ex
tend from the ring I04. A clamping bolt H2 is
15 provided for each of the brackets I00.
An annu
lar plate H0 is fastened to the thrust collar I00,
by means of the bolts H0. The springs II1 bear
between the thrust collar I00 and the annular
plate 00. Cups IIO extend from the thrust collar
I00 and cups IIO extend from the plate 00 for
the springs II1. '
.
A pair of links I20 are pivoted at one end of
each of the .pins I00. *An actuating shaft I20
having the threaded's'hank I20 at one end is
iournaled in the supporting brackets 00. Arms
I00 are, indicated with the hubs Ill and the
latter are fastened to the shaft I20. The lower
end of each arm I00 has the bifurcated end I04,
which is pivoted to one of the links I20 by the
30
pin I00.
7
A plate I00 is bolted to the outer face of the
drum 41 and has extending therefrom the flex
ible bushing I01, which latter extends through
an opening in said drum 41. A shaft extension
I40 extends through the bushing I01 and has
formed therewith the threaded opening I4:I at
one end, which engages the threaded shank I20.
A lock washer I42 on the shank I29 locks the
shaft I20 and the extension I40 to each other.
A collar I40 is integral with one end of the ex
40
tension I40. An actuating lever I44 has one end
supported on the extension I40 ‘and bears against
the collar I40. A nut I40 is in threaded engage
. ment with the outer end of the shaft extension
annular ?ange 04 and the ring gear I00. Bolts
‘ I00 clamp the ring gear I00, the annular plate 5
I04, the annular ?ange 04 and the annular
plate '00.
It will be noted that the plates 00 and I04 re
tain the pinion gear supporting ring I00 in op
erative position.
Y
1O
..
Slidable push rods I10 ‘having the vheads I'II
integral therewith and the heads I12 detachably
connected thereto slidably extend through the
plate 00, the ?ange 04, the plate I04 and the
ring I00. A supporting ring I14 has indicated
at its lower end the slot I10, and the walls of
said slot are concentric with the axis of the
axle 20, and the said supporting ring I14 is'held'
in place or position by means of the bolts I10.
One end of each of the bolts I10 is in threaded 20
engagement with the disc 0I and locked thereto
by the nut I11. The other end of the bolts I10
extends through the supporting ring I14 and each
are clamped in place by the nuts I10. A pair
of the ‘bolts ‘I10 slidably extend through the 20
outer ends of the brackets I00, preventing the
thrust collar ring I04 from turning with the
thrust collar I00.
A rock shaft I00 having the collar I00 integral
therewith, and the collar I01 connected thereto, 30
has one of its ends seated in the disc 0i, and its
other end. extends through the supporting ring
I14. A rocker I 00 is fastened to the rock shaft
I00. A link I08 has one end pivoted to the
rocker I00.
I
A brake band I00 at one end has integral
therewith the bifurcated arm having the mem
bers IOI, the latter having the openings I02 and
the openings for the pin I00. The link I00 con
nects the rocker I00 and the pin I90 of the arm
having the bifurcated members IOI. The lower
end of the brake band I00'has integral therewith
the lug I04.
A second brake band 200 has integral there~
I40 and a lock washer I41 encircles the exten
with at its upper end the bifurcated arm hav
sion I40.
ing the members 20I, similar ‘to 'IOI. In the
upper ends of the arms "I are the openings 202,
v
A cam I40 is keyed to the actuating shaft I20.
A lift rod I00 is shown with the heel IOI, which
latter bears on the cam I40.
A supporting head
50 I00 is in threaded engagement with the upper end
of the lift rod I00, and a nut I 04 locks the .head
I00 to the rod I00.‘ A pinion gear supporting
ring I00 is rotatively supported on the annular
flange 04, and has formed therewith the corru
gated outer circumferential surfaces I00. Three
bolts each having the ?ange collar I00, are keyed
to and extend through the ring I00, and each of
said bolts has journaled thereon a pinion gear
I00.
60
A supporting bracket I00 is bolted to the wall
65
ings I00d_provlde clearances for the heads "I of
the push rods I10, to be described.
.An annular plate I04 ispositioned between the
45
and in the lower end of said arms 20I are open;
‘lugs for the pin 200.
'
The inner faces of the brake bands I00 and 200 50
are corrugated as shown at 204 in Fig. 1 to en
gage the surface I00 of the pinion gear support
ing ring I00.
'
'
A link 200 similar to I00 has one end pivoted
to the rocker I00, and its other end ‘is pivoted 65
to the arms 20I by means of the pin 200. A lug
200 is integral with the lower end of the brake
band 200.v A pair of similar bolts 200 extend
through the lugs I 04 and 200. Each of the bolts
I
200 has the flat head 200 at one end and sup- '
40 and is provided with a clamping screw
I 0|. A pull cable I02 has one end fastened to
the lever I44 and its'other end is attached to
ports the detachable spacing collar 2I0 and one
of the said brake bands I00 or 200. Nuts 2“
and 2I Ia are provided for the bolts 200. A wash
the brake pedal of the vehicle not shown.
An external ring gear I00 is supported on the
rotating sleeve 00, and the said ring gear I00
meshes with the pinion gears I00.
An annular shaped oil guard disc, preferably of
er is shown at 2I2 for the nut 2I I, and a similar
washer is provided for the nut 2| Ia. By means 65
of the slot I15 the lugs I04 and 200 can be fas
tion I001), the ?ange I000 and the openings I00d
guide bracket 10.
To the rotating sleeve 00 are detachably bolted
three curved clamping plates 220 having tapered
end walls 22I, by means of the bolts 222. Upon 70
tened different distances apart to'take up the
wear of the brake bands I00 and 200.
A lever 2I0 having the hook'end 2" is keyed
70 compressed felt, is indicated at I 00a, see Figs. ‘ to the rock shaft I00} A spring 2I0 extends be 70
1, 5 and 8, and is shown with the depressed por-~ tween the hook end 2I1 and the lug 1| of the
and I00e. The said oil guard disc I00a is fas
tened to the gear I00 by screws, not shown, ex
75 tending through the openings Mile.
The open
a
9,198,
the sleeve 33 are detachably positioned the con
018
3
With the partial rotation of the actuating 'shaft
cavo-convex‘ supporting plates 224 having the ‘ I20, the arms I30 are swung in the direction of
tapered end walls 225. The walls 225 bear against
the adjacent walls 22l of the clamping plates
225., Integral with or fastened to each support
ing plate 224 are indicateda pair of oppositely
positioned anchor brackets 223. A guide plate
. 229 is at right'angles to and integral with each of
the anchor brackets 220.
a
. -
.
the arrow 0, Fig. Land the thrust collar I 00v is
movedin the same direction. When the'thrust
collar I00 contacts with the push rods I10 the
latter are-moved in the direction of the'arrow'C, ‘
Fig. 1,‘ and thereby the bell cranks having the
arms 240 and 241 are‘ swung down.
The arms
241 Fig. 2, bear against the arms 253 of the le
a
“ Three similarconca-vo-convex shaped’ brake,‘ vers 252 and the bifurcated eye ‘ends 254 move
shoes 230 are indicated withfthe end walls 23I. ‘the links 2 55, byv means of which‘ the brake shoes
A brake lining 232 is carried on the outer face of
I each brake shoe 230. A pair of springs 234 have
each» one end connected to each‘ of the brake
15 shoes 230, and " their other» ends 'are connected
to their adjacent supporting brackets 220.
A
bifurcated bracket having the members 235 ex
‘ tends from each of the said brake shoes 230.
A
pin 236 is supported in the members 235.
20
Between the faces of the ‘guide plates 220 of
each anchor bracket 22. is slidably positioned the
crcsahead 240, having the guide extension: 241.
The pin 235 extends through the bracket 235 and
the crosshead 240. A bifurcated lug 244 is in
10
230 are moved and the brake‘ linings 252' are '
brought to bear against the inner face
brake drum 35.
-
of the
_It will be noted the brakeshoes 230 with their 15
brake linings 232 are brought to bear against the
inner face of the brakedrum 35, by means that
bear the surface of the brake lining 232 on each
brake shoe 230 evenly against the surface of the
brake drum 35.
20
By adjusting the nuts 250 the distance between
the brake drum 35 and the brake shoes 230 can
be varied. to function one or more of the said
brake shoes 230 with the brake drum II.
To release the brake shoes 230 from the brake
224 and a bell crank having the arms-“51nd drum 35. the operator releases the pull cable I32, 25,
241 is pivoted in each lug 244. The heads "I and the tension of the-springs 234, pull the brake .
of the push rods I10 are adapted to bear against shoes 230 from the drum 35. At the same time
‘theadjacent arms‘240. A lever 252 having the the tension of the springs II1 move the thrust
tegralwith or fastened to each supporting plate
‘am 253 and’the arm withythe bifurcated eye end collar. I00, in the direction of the arrow B, Fig. 30
' 253, is pivoted to each of the brackets 220 by’ '1, by means of which the cam ‘I40 permits the
the pivot 254a. Each ‘.pair of the. arms 253 bear lift rod I50 to be lowered by the tensionof the
against the‘ adjacent arm 241. A pairof links
spring 2I0. By‘ this means the rock shaft I35 '
swings clock-wise, and the brake band's I30 and
255 is pivoted to each brake shoe 230 by means
of the pin 250.. Each of the links 255 has the
threaded shank 250, which, is in threaded en
gagement with the body of the bracket 235, and is
200 are released from clamping the pinion gear -
supporting ring I55, and the rotating sleeve 53
stops turning in a direction opposite to the ra
adjustably clamped in position by the jam ‘nut
tation of the drum 35.
250. Each of ‘the links 255 is pivoted to the ad
40 jacent lever 252 at its eye end 253, by means of
the pivot 25L
'
-
v
I
It will be noted that the curved clamping plates
220 fastened to the rotating sleeve 03, permit the
gear supporting ring I55.
removal and replacement of one or more of the ‘
‘concavo-‘convex supporting plates 224 with their
individual brake. shoes 230 ‘and their‘ appurte
nances supported thereon.
-
_
'
’
'
I
By means of the nut' I54 oi the lift'rod I50,
the supporting head I53 can be vertically ad
justed to vary the circumferential contact of
the brake bands I90 and 200 with‘the pinion
'
'
By means of the bolts 203 and the slot 115, v
in the‘supporting ring I14, the distance between 45
the lower ends of the brake'bands I 50 and 200
can be varied.
.
'
Referring toFigs. 1, 2 and 3 and the rear axle
By means of the adiusting'pin I01, the thrust
of the vehicle, to clamp the brake bands I00 and v collar ring I04 is located in operative position.
200,
against
the
pinion
gear
supporting
ring
I55,
It will be noted that the distance between 50
50
the‘operator pulls the pull cable I52 in the di
the thrust collar ring I04 and the pin I35 may
rection of the arrow A, Fig. l, which swings the be varied 'by substitution of a similar link 255
actuating, lever ‘I44 and thereby the actuating‘ for said link I25.
’
I
'
shaft I20 is swung counter clockwise._ Thereby
In case the disc BI is to be removed‘ from
55. the cam I ‘40 raises the liftrod I50, and the lever the end wall 46, without changing the adjusted
H6 is swung upwardly; which partially turns position of the pin I01, the clamping nut mm
the rock shaft I05. Bythis means the rocker is unscrewed from said pin I01 to allow the
I80 is swung in the direction of the arrow B, latter to be withdrawn with the disc 0i .
Fig. 3. Thereby the links I85 and 205 move in '
It is to be further noted that the \brake‘shocs
60 opposite directions and the brake bands I50 and
230 are not revolving with the rotation of the 60
200 are drawn towards each other to tightly clamp
them against the pinion gear supporting ring I55. brake drum' 35, when the brake bands I90 and
It will be noted the brake bands I00 and 200 200, Fig. 3, are not in contact with their meet
when actuated by the cam_ I40 remain clamped, _ ing pinion gear supporting ring I55, Fig. 1.
against the pinion gear supporting ring~l55, and
It is also to be noted that the brake shoes :30 -
thereby prevent rotation of the said pinion ‘gear. ‘are revolving with the rotation of the brake
drum 35, when the brake bands I90 and 200
supporting ring I55.
‘
.
are in contact their coacting pinion gear sup
At the time the brake drum 35 is turning the in
’ ternal ring gear 42 turns the pinion gears I55. , porting ring I55.
’I‘hereby the external ring gear" I53 is turned,
which turns the rotating sleeve 03 in a direction
opposite to the rotation of the brake drum 35.
It will be noted the oil guard disc ,l03a, pre
vents grease or oil entering the interior of the
' brake drum 35.
It is also to be noted that the drawings, with the
exception of Fig. 1, do not show the usual leaf 70
spring of the axleof the vehicle.
_
'
It will be noted that the barrel 60 and ‘the
disc'SI, on removal of the oil cup 55, the pin
_ 14, the roller bearing housing 12, the bolts 02, 75
4 .
2,128,013
and the shaft extension I40, can be removed with _ tact ‘said brake shoes with said brake drum and
their appurtenances.
4
,
means to release said brake shoes from said
It will be noticed that the rotating sleeve 83,
on removal of the pin 93, the collar 90 and
brake
the links I25, can be removed with its appur~
tenances.
_
'
Various modi?cations may be made in the
invention and the present exempli?cations are
to be taken as illustrative andlnot limitative
thereof.
,
_
drum.
'
'
'
,_
5..‘ The combination of the wheel of a'vehicle,
a brake drum fastened to the wheel, a gear ro
tating with-the 'drum,'a-n axle connected to said
wheel, an axle housing supporting said axle, said
housing having a wall at right angles thereto,
a drum extending from said‘ wall, a supporting
barrel encircling said housing, a disc for 'the 10
supporting barrel, a sleeve rotatively supported
-
Having described the invention I claim: ,
l. The combination of a‘brake drum, an in
on said barrel, means to lubricate the bearing
ternal ring gear fastened to the brake drum, a
surface of said sleeve, :an annular'fiange for
plurality of pinions in mesh withsaid internal
saidv sleeve, a pinion gear supporting ring ro-v
tatively supported on said annular flange of the
sleeve, means to maintain the pinion gear sup
porting ring in position, a brake band to engage
the said pinion gear supporting ring‘, means to
contact the brake 'band with said pinion gear
ring gear, an axle housing, an axle in saidhous
ing, a wheel fastened to the outer end of said
axle, saidrdrum fastened to said wheel, a sup
portingwbarrel fastened to said axle housing,
a sleeve rotatively supported on said barrel, stop
ill) collars on said supporting barrel to maintain said
sleeve in position, means to lubricate the bear
ing surface of said sleeve, an external'ring gear
supported on said sleeve, an annular ?ange for
supporting-ring and to release it therefrom, bolts
extending from the pinion gear supporting ring,
pinions journaled on said bolts, said pinions in
mesh with said gear and rotating with said drum.
said sleeve, said external .ring gear fastened to
said annular ?ange, the latter gear in mesh with
a second gear supported on the said sleeve, said
second gear fastened to the said annular flange
said pinions, a pinion gear supporting ring ro
tatively supported on said annular ?ange, a de
thereof and'in mesh with said pinions, an oil
guard disc fastened to said second gear, a plu
tachable annular plate fastened to said annular
?ange to ‘maintain said pinion ‘gear supporting
ring in position, axle bolts fastened to the pinion
gear supporting ring and rotatively supporting
said pinions, brake bands coacting with said
pinion gear supporting ring, means to contact
said brake bands with said pinion gear support~ ,
rality of concavo-convex supporting plates sup
ported on said sleeve, a-pair of anchor brackets
' ing ring, means to release said bands from said
contact with the pinion gear supporting ring,
extending from each of said concavo~convex sup 30
porting plates, a guide plate for each anchor
bracket, a crosshead slidably positioned between
each pair of anchor brackets, means to maintain
said crosshead in position, a brake shoe opposite
each pair of ‘anchor brackets, a bifurcated‘ 35
bracket extending from each brake shoe, a pin
brake shoes in connection with said sleeve, brake connecting each crosshead with its accompany
linings for said brake shoes, means to contact ing bifurcated bracket, a lever pivoted to each
the brake shoes with the brake drum and release 'anchor bracket, a link for each lever having
40 them therefrom, and an oil guard disc fastened
one end pivoted'thereto, each of said links in
to said external ring gear.
pivotal connection with one end of said brake
2. The combination of a brake drum, an axle
shoes, means to vary the length of said links and
housing coaxial with the brake drum, said hous- ' clamping plates fastened to said sleeve and en- ,
ing having a wall at right angles thereto, a ro
tatable axle in said housing, connections between
the axle and the brake drum to rotate the latter,
a supporting barrel having a disc at one end
thereof supported on the axle housing, said barrel
detachably fastened to ‘said wall, a sleeve rota
tively and detachably supported on said barrel,
means to maintain said sleeve in position, means
interposed between said brake drum and said
sleeve to rotate the sleeve at a speed different
from the speed of the brake drum, a supporting
CI in ring connected to said disc, brake bands sup
ported on said supporting ring, said brake bands
coacting with the means interposed between the
brake drum and sleeve, brake shoes in slidable
relation with said sleeve, means to ‘contact said
60 brake shoes with said brake drum and means to
gaging said concavo-convex supporting plates,
said brake shoes coacting with, said brake drum._ 45
6. The combination of a brake drum, a brake
coacting with the brake drum, means to‘revolve
the brake with the rotations of the brake drum,
an actuating shaft adjacent to the brake drum,
means to oscillate said shaft, a rock shaft ad
jacent to the actuating shaft, 9, pair of brake
bands adjacent to the brake drum, a cam fas
tened to the actuating shaft, a lever fastened
to the rock shaft, a'lift rod interposed between
the‘ said cam and said lever, a rocker fastened
to the rock shaft, a pair of links each having one
end pivoted to said rocker, the other ends of said
links pivoted to the brake bands, a spring having
one end connected to said lever, said lever hear
ing on the upper end of said lift rod, and the 60
lower end of said lift rod bearing on the said cam,
release the same.
3. The combination of a brake drum, a sleeve, - means to vary the length of said lift rod, a sup
means to rotate the sleeve at a speed different ' porting ring adjacent to the said brake bands,
than the rotation of the brake drum, means to
stop the sleeve from rotating with the brake
drum, brake shoes in slidable relation with said
sleeve, means to contact said brake shoes with
said brake drum,‘ and means to release said
brake shoes from the said brake drum.
4. The combination of a rotating brake drum,
70
a sleeve, means to rotate the sleeve in a direc
tion opposite to the direction of the rotation of
the brake drum, means to stop the sleeve from
rotating with the brake drum, brake shoes in
75 moveable relation with said sleeve, means to con
said brake bands pivoted to said supporting ring,
said supporting ring having a slot to adjust the
brake bands to or from each other, a pinion gear
supporting ring adjacent to the supporting ring,
means to contact the brake bands with said pin
_ion gear supporting ring’and means to release
the same, a slidable thrust collar adjacent to the
brakedrum, connections between, the actuating
65
70
shaft and the thrust collar to slidably move the
thrust collar, a plurality of springs having each
one end bearing against said thrust collar to re
turn the thrust collar to its original position, con- 75
9, 1 98,0 1 3
nections interposed between the thrust collar and ,
9. The combination of a rotating brake drum,‘
the brake to move the brake against the brake
drum and release the brake therefrom and
springs having each one end connected to said
blrake, to move the latter to a non-operative posi
t on.
‘7. The combination of a rotating brake drum,
a brake coasting with the brake drum, means to
revolve the brake in a direction opposite to the ro~
10 tation of the brake drum, an actuating shaft ad
jacent to the brake drum, means to oscillate said
shaft, a slidable thrust collar adjacent to the
a brake for the brake drum. means to revolve the a
brake in a direction opposite to the rotation of
the brake drum, means to release or stop the said
brake from revolving in said direction. an actu 5
ating shaft adjacent to the brake drum, means
to oscillate said shaft, an axle housing extending
into the brake drum, said housing having a wall .‘
at right angles thereto, a disc fastened to said
wall, a supporting barrel in connection with said 10
disc supported on the axle housing, a pair of
brackets extending from said disc supporting the
brake drum, connections between the actuating ‘ actuating shaft, a supporting ring in connection
shaft and the thrust collar, means to adjust the with said disc, a pair of brake bands having one
'15 position and limit the movement of the thrust
end of each pivoted to said ring, connections be 15
collar, a thrust collar ring supported on the thrust ‘tween said actuating shaft and said brake bands
collar, means to adjust and limit. the movement to move the latter to or from each other, means
of the thrust collar ring and said thrust collar to adjust the brake bands to or from each other,
in one direction, slidable push rods positioned ad
a sleeve rotatively and detachably supported on
jacent to said push rods with said thrust collar, said barrel, a thrust collar slidably supported on 20
a bell crank pivoted adjacent to each push rod, said sleeve, connections between the actuating
an arm of the bell crank swung in one direction
by its adjacent push rod, a pair of levers each
pivoted adjacent to the other arm of said bell
25 crank, one of the arms of each of said levers
swung by its coaction. with one of the arms of
said bell crank, a link having one end pivoted
to the other arm of said lever, the other ends of
said links pivoted to the brake, means to vary
80 the length of said links and springs each having
one and connected to said brake to release it
from said brake drum.
shaft and said thrust collar to move said thrust
collar from and to said disc, a thrust collar ring
supported on said thrust collar, connections be
tween said thrust collar ring and said disc to 25
maintain said thrust collar ring in a non-rotative
position, brake shoes for the brake, brake linings
for the brake shoes, connections interposed be
tween the thrust collar and said brake shoes to
move said brake shoes with their linings into con 30
tact with the brake drum and‘to release the same
and a drum for the ‘said wall enclosing the thrust
8. The combination of a rotating brake drum, a
collar, the brake bands and their appurtenances.
brake for the brake drum, means to revolve the
10. In combination a brake drum, means to
85 ‘brake in a direction opposite to the rotation of turn the brake drum, a brake within the brake 35
the brake drum, an actuating shaft, means to - drum, connections between the brake drum and
oscillate said shaft, a thrust collar, a thrust col
the brake to revolve the latter, an actuating shaft
lar ring supported on the thrust cqliar, means in
spaced from the brake coacting with said con
terposed between said shaft. and said thrust col
nections to start, reverse or stop the revolutions
lar to slide the latter with the oscillations of the of the brake, connections between the actuating 40
shaft, means to adjust the position and limit the shaft and the brake to force the latter to bear
movement of the thrust collar ring and the said against. the brake drum and means to release the
thrust collar‘ and means interposed between the - brake from the brake drum.
thrust collar and said brake to move the latter ,
with a movement of the thrust collar.
‘ WALTER H. PARNELL.
45
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 132 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа