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Патент USA US2121869

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Jun? 28, 1938.
w. E. GREENAWALT "
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FLYWHEEL
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BRAKE
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2,12L869
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FiledJune 10, 1936
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INVENTOR.
BY
ATTORNEY.
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Patented June 28, 1938 v
PATENT- Omzz.
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2121359
_F?YWHEEL BRAKEÍ
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William E. V:?Šfreenaw'alt, Dallas, Te?.
Application June 10; '1936,V serial 1'\I‹›.784?,4`94'4 i
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4 olaims..
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' This'invention _relates primarily' toV a brake
means for the?ywheel'of a motor vehicle so as to
prevent theft of the vehicle.
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. position". rThe'lever bar `v421i' i's pivoted 'by bolt
niea'ns 34 tothe universal housing |4`.V
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:A'lever bar 36 is` 'connected bylbea'ring means
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38 at afpoint near theff'ront énd'o'f' the'control
rod 2:4, and a coilspring 46 ismounted on- the. rod
' vAfurther'object of this' invention is to- provide
=5- looking' means whichV is 'I so' constructed that it
2'4` between the bearing means 38 and nut means
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t iIt is anotherobject of this invention to provide 42 on the end of'the rod'241` . Lever bar Iš?` i's piv
a looking apparatus which is simple in construc ' oted by bolt 'n'rean's'4i6` at its lower end to' asecond'
` can not be easily tampered'íwith'.
tion and economical of manufacture.
lever bar44. `'lf'lr'iere'is'a slot 41 inv the lever barrj ¬ .
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38 which receives the boltimeans at. n?verbars:
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The novel featuresüthatI'consi'der character
istic of my invention are set forth with particu- ' 36 and Mare spacedto one side' of the iiywh'eel
larity in the appended claims. ' Other objects 'and l'2', looking from' rear _to front. A vertical'bearingf , _
_advantages will be best' understood from the fol ' or support member 48Íisf spaced to 'one side of the
lowing- description ofv vthe specific embodiment flywh'eel |2 so that the leverlbar's 3ä'and' 44 arem
when' read in connection with the accompanýing fulcrumed' at one side of the flywheel. The lever,
drawing, in which: `
'viewvof' the transmission and
Figure 1 is a vplan
?ywheel housing with parts-brokenv away, disclos
ijngmy-improved'apparatusl in place;
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member 50' is adap'ted to' e'ngage outside porti'on
H of the ?ywheel' |`21whenÍ 'the brake apparatu's
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22' 'is in operativep'o'sítion. ' Since thelever bar
Figure 2 _is an enlarged view' of the looking de
viceV forv the ?ywheel shown in' Figure 1.
b'ar 44í has a shoe member 50 on the'opposite en'dl
, towhichv itis pivoted to lever bar 36 and shoe
4^4`j_'is"spaced 'to one sideof' the ?'ywheel? the shoe:
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member 50 o'n the end of the leverbar'4`4`enga'ges'
V(233-'4-3 lof Figure' 2, disclosing the pawl means* for* vthe ?ywheel' onits surface abovetransverse'cen- .~
› . g'Figure 3 is a sectionalV view` t
ken on the line:
locki'nfg?and unlocking' the apparatusg. ,
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'F'igure' 4is a'sectiona'l'viewY taken on the line
44-4' of Figure 2, disclosing the looking means 'or
cl'utch shoe for the ?ywheel.
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The lever bar 44 is _fulcrurned' to the Vertical' '
support 48 adjacent the shoemember 5|! vb-yiholi';
means 52. And the lever bar .36 is alsofulcrurned
by'boltimeans 54 near the pivot pins'46`to- the ver
Figure 5 isV a side 4view of a part of the control tical supportu. The Vertical support'?'ßíi's se-'f
rod- of my improvedlocking apparatus and of the Vcured to the ?y'wheel'housing orrnay be' a part
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hanvdle for Operating the looking apparatus. '_
` Figure 6 is a` sectional?view taken on line 6-6
of FigureV l showingv the' looking means forthe
drive shaft. '
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Figure 7 'isaplan1view of the lock 'Operating
V35 means whichvv is mounted on the panellof'thei
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thereof. The lever barßßhas'a slot 31 adjacent'
the end which is secured to the control rocl?2'41`V
. ' Aj ?exible' shaft `56` is 'connected to 'a key operé'
ated lockv5'8' on thejpanelj'jboard (not shown).
A lever' 6W is” connected toVV 'the'lower end ofjthe „_„Š
flexibl'e sha'ft' 56; and the: lever 60 is connected
by appropriate screwlor'bolt means toja pawl 62'; ~
Referring in detail to the drawing, IO' is the . Thep'awl 62' ismounted i'nj a stationary'bracketL
h'ousing for the transmission (not shown) and: ölíwhi'chi'is secured _to thevertical support'48." ?
i AAV special leverüiö is shown in Figure 5 fastened
.the ?ywheel assembly l2. Thereis a hou'sing1l4.
vehicle.
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' . 40?_for“th`e luniversal jointv .16 andrthe special pinion
` |8V` which is mounted on “drive shaft 20'. The
:by'apprbpríate' securi'ng means to the control 'ro'di
2'4'?` The lever 66'has a dog member {35 which is
'adapted to co-operate with ,the notches 69 in the i
lockingapparatus as a whole'is designated 'by theV V i, ratchetblock 61. The lever 66 is spaced between
numeral 22.
' The brake apparatu`s`~22is mounted in the?y-V Vthe gear'shift lever and the emergency' br'akev
'1;5I wheelhousing. A control rodv 24?of thebrake
apparatus 22 is?spaced` along one side' of' or
through thetransmission'housi'ng I? and has a
lever (not shown), ?or at _any convenient' place `de~`
si-red'. In closev proximity to' theÅ leverißü is" a
switch' means (58` which is secured tof the 'control „
'lever bar 26 connected by bolt and nut means 21 Í rod 24. The numeral 10 indicates a contact and
to its rear end. Afcoil spring 30'is mounted on . 12 indicates conductor wires leading to the car 50
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the control ro'd 24. The' lever bar 26 has a battery (not shown).
The operation of theV apparatus is as followsz
toothed'shoe 28 on its outer end which'is adapted
lto: engage the special pinion |8 mounted on the ' When it is desired to move the shoe member 50
drive shaft 20 (either separate or on universal ' into engagement with the flywheel and lock the
drive shaft and also cut the current off from'the
joint, half of which is nearest transmission hous
battery, so that the automobileV cannot be easily 55
55 ing) when the brake apparatus 22 is in operative
2,121,889
stolen, the lever 66 is pulled toward the rear of
the car and is locked in a notch 69 in the ratchet
block 61. When the lever 66 is pulled back, thus
moving the control rod 24, the switch means 68
is pulled away from the . contact 10, thereby
breaking the circuit to the battery. Since the
current is cut off from the battery, all circuits in
the car are also broken.
The control rod 24 also
swings the lever bar 26 about the pivot _34 and
10 moves the toothed shoe 28 into engagement with
the special pinion IB on the drive shaft 26, there
by looking the rear Wheels of the car. The con
trol rod also at the same time pulls back the
lever bar 36, which bar turns on the fulcrum 54
15 and moves the lever bar 44 horizontally toward
the ?ywheel |2. As the lever bar 'His moved
horizontally, it turns on the fulcruni point V62,
and as a result the shoe member 56 engages the
?ywheel |2. When the lever bar 36 is pulled
20 back, it raises the pawl 62 which then registers
with the slot 31 in the bar 36. VNo key is neces
sary to lock the car, the lock is entirely auto
matic. A key is only needed to unlock it. Pull
ing lever 66 back immobilizes the engine .and rear
25 axle and breaks the circuit, all of which is ef
fected with backward movement of lever 66. If
it is desired to unlock the parts of the car, the
pawl 62 is unlocked by means of key in the panel
board, and then lever 66 is pushed forward, and
30 at this time the toothed shoe 28 is disengaged
from the special pinion IS, switch means 68 en
gages the contact 10, and shoe member 56 of the
lever bar 44 disengages the ?ywheel |2. The
brake means for the ?ywheel is mounted on its
upper side so that it would be necessary to dis
mantle the housing before the lock could be
broken.
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It is to be understood that my apparatus shown
in the drawing and described in . the above
40 specification is merely' illustrative and that the
invention is not limited thereto since alterations
and modi?cations Will readily suggest themselves
to persons skilled in the art, without departing
from the spirit of the invention or the scope of
45 the annexed claims.
What I claim as new is:
1. In a brake of the Character described being
con?ned within a housing for the ?ywheel of an
internal combustion engine, the said brake com
50 prising a shoe member movable by an Operating
lever through linkage means into contacting and
non-contacting positions relative to said ?ywheel,
the said shoe member being an integral part of
a lever bar and the said lever bar being pivoted
55 to the housing, a second lever bar secured to the
?rst mentionedlever bar and the second lever
bar being pivoted to the housing, a rod member
being secured to the second mentioned lever bar
opposite the end to which it is secured to the
60 ?rst mentioned lever bar, and the said rod mem
ber having the said Operating lever secured
thereto.
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2. In a brake of the Character described being
con?ned within a housing for the ?ywheel of an
65 internal combustion engine, the said brake com
prising a shoe member movable by an Operating
lever through linkage means into contacting and
non-contacting positions relative to said ?ywheel,
the said shoe member being an integral part of
a lever bar and the said lever bar being pivoted
to the housing adjacent the shoe member, a
second lever bar secured to the ?rst mentioned
lever bar and the said second mentioned lever
bar being pivoted to the housing adjacent the
end to _which the ?rst mentioned lever bar is
secured to the second mentioned lever bar, a rod
member being secured to the second mentioned 10
lever bar opposite the end to which it is secured
to the first mentioned lever bar, and the said rod
member having the said Operating lever secured
thereto.
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3. In a brake of the Character described being 15
con?ned within _a housing for the ?ywheel of an
internal combustion engine, the said brake com
prising a shoe member movable by an operating
lever through linkage means into contacting and
non-contacting positions relative to said ?ywheel, 20
the said shoe member being an integral part of a
lever bar and the lever bar being pivoted to the
housing, a second lever bar secured to the ?rst
mentioned lever bar and the second lever bar
being pivoted to the housing, a slot'in the end
of the said second lever bar opposite the end to
which it is secured to the ?rst mentioned lever
bar,.p‹a\vl means carried by a third lever bar, a
rod member being secured to the end of the sec
ond mentioned lever bar having the said slot 30
therein, the said rod member having the said op
erating lever secured thereto, and when the op
erating lever is pulled back thereby actuating the
shoe member into engagement with the ?ywheel
through the means of the rod member and the 35
?rst and second mentioned lever bars, and the
pawl means registering with the slot in the sec
ond mentioned lever bar.
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4. In a brake of the Character described being
con?ned- within a housing for the ?ywheel of an 40
internal combustion engine, the said brake com
prising a shoe member movable by an Operating
lever through línkage means into contacting and
non-contacting positions relative to said ?ywheel,
the said shoe member being an integral part of 45
a lever bar and the lever bar being pivoted to the
housing, a second lever bar secured to the ?rst
mentioned lever bar and the second lever bar
being'pivoted to the housing, a slot in the end
of the said second lever bar opposite the end to 50
which it is secured to the ?rst mentioned lever
bar, a pawl means carried by a third lever bar, a
rod member being secured to the end of the second
mentioned lever bar having the said slot therein,
the said rod member having the said Operating
lever secured thereto, and when the Operating
lever is pulled back thereby actuating the shoe
member into
engagernent - with the
?ywheel
through the means of the rodmember and the
?rst and second mentioned lever bars and the 60
pawl means registering with the slot in the sec
ond mentioned lever bar, and a fiexible shaft
secured to the third mentioned lever bar and
means for actuating the ?exible shaft so that the
third mentioned lever bar lifts the pawl means
from the slot in the second mentioned lever bar.
WILLÅIAM E. GREENAWALT.
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