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Патент USA US2513694

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July 4, 1950
2,513,691
E. TOWER
|
NONSKID EMERGENCY SHOE FOR MOTOR VEHICLE WHEELS
2 Sheets-Sheet 1
Filed May 4, 1948
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IN VEN TOR.
.EMER Y 72a WER.
BY
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H 7‘ TOE/VE Yé’.
July 4, 1950
E. TOWER
2,513,691
NONSKID EMERGENCY SHOE FOR MOTOR VEHICLE WHEELS
Filed May 4, 1948
2 Sheets-Sheet 2
Patented July 4, 1950
2,513,691
UNITED
' 2,513,691.i .y
f NONSKID‘EMERGENCY SHÜE‘FÜK Morcin
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VEHICLE WHEELS'.
Emery Tower,
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Y 'Application May 4, 1948', S'enîal‘îNeraZSLiT/Iö 'il ì
5Claims. (crisis-¿4.1 ijf, _
when. turned, to w.i-thdraw.V horizontal pinsvr from
holes in. the upper. ends ortho»y suspende,d~.shoesz
which normally» are hung from these-pins.: The:
This invention relates- to motor vehicles, and
more particularly to safety apparatus `designed
to» stop undesired rolling on ‘hills as well as skid.
ding.
’
`
shaft can» be'1 turned; when desired», by ¿means of
y
Many s_erious accidents are caused by the in
anelectriamotos controlled-.by the driver oi the
ability of the. drivers of motor vehicles, particu
larly' trucks, to stop their vehicles after they start
to'skid. Also,- it is diflicult‘to start a heavy truck
of the shoes maybe;»locatedœeitherin front of
up a hill on :which itl has stopped, especially if
whether it isiorward». or. backward-.movement of
the pavement is wet or icy. When-the dri'ver
takes his foot from the brake.,` thetruck generally
the vehicleythatis to; gua-_ruledagainst.l If. de->
s’ii ,.„hoes-»niay ybedwang.Y
both positions so
will start to drift 4baclsbefore enough power can
be applied to the wheels vto move it forward; If
either forward4 or. ‘backward man. emergency.
vehiclej..„-¿ The inoperative or _suspended position.'
the wheelsor inf-'back of- them,i depending on
tlïi.¿.»_,¿the. vehicle'. canovbwe stoE pedf. from. moving
the pavement is slippery, thef truck also will
_ - The preferred. embodiment. of. the invention
start to skid and may ‘refuse togo forward. 15. is. illustrated in the.> ac.companyingL drawings, inA
which.
la isfay rear View. off a. truck: with the.
When the truck> is parkedfon a grade, .there al
safety shoes hanging in. inoperativev position;
ways is the danger that it will roll’ away unless
the wheels are blocked.
A
.
.
läîig...2` isaVv fragmentary rear view ot Athe/f»truck.
showingfthe. shoes in. operative» position; Fig-_ 3»
y
It is among the objects of this inventionto
provide safety apparatus of' simple and durable 20 isßapfragrnentary; side. view of theÍ rear end» of
construction which> can» be-¿readily appliedl to
the truolswitnone. of. the< dual wheels;removed.` ì
and.. sho-wing a safetyI shoe engaging the ground
motor vehicles and-which can:y be .usedE in. emerf~
gencies to stop skidding, to. vaid the vehicle in'4
behind'.theiother/wheel; Eiga4 isa/view similar to
starting-up a hill from ai standstill,` andïtobl‘ock
the wheels when parked.
' "
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~
25
Eig; 3,., but. with the wheel-L rolled,A back on the,
shoe;-` Eig. is anfenlarged detail taken on the
In accordance with this.. invention` al> pair. of
non-skid shoes a-re provided,'feach ofV which is
adapted to support a Wheeli orset of dual wheels
of a motor vehicle. Arms,- which have their ‘
lineV-»Y of Eig". 1f; and»_Fig.„6» is,v a view similar
Theser chains may be fastened to. af cross beam
mounted on. the. vehicle., This. beampalso sup-*f
are made correspondingly narrower.
When the shoes are not in use they are hung
from a lhorizontal. cross beam H, preferably an
to Figa. 4,., showing the; shoesy operating from in,
front-'of >thefwheels.
.
,
, .Referringtofthe ñrstfour iigfures lonf .the draw
upper ends pivotally connected-to the. vehicle, 3o; ings, a pair of wheels l and? are'mounted on
are connected.' at their;> lower endsto the` shoes
each-endof the lrear -axle 3. of; a truck, and an
inverted L-‘-shaped bracket 4 isA rigidly connected:
so that the shoes-normallycanßbe swung length
at. its lower endin any suitablemanner to the
wise. of the vehicle and upward .to an inoperative.
axle near each inner-wheel-l. ïThe vupper part
position. When-used with dual.v wheels, each: arm
of each bracket extends outward. y‘across the adja
can swing between a'pair of: wheels. Preferably,
cent inner wheel and- through the looped upper
the lower ends. of- the! arms.vl are, pivotally tion-`
end. of an; arm -6 that is suspended from the
nected tov one end. of the‘shoeskand. means are
bracket` so that it` can swing between. the dual
provided for supporting the opposite'end.y oiïthe.
wheels. When. the arm. is in its lower or most
shoes from the arms so that‘thevshoes‘will not
forward position, .as shown.- in Fig. 4- ywhere rollingA
swing too far down away-from the arms;y .The
backV is bei-ng prevented, it curves rearwardly
shoes .are held in. their inoperativel positiony by
around the axle between the two wheels. and then
latching means `which can; >be trippedauby the.
extendsin front of the axle. In this'embodi
driver to release the shoes-softhat they will swing
ment of the invention the lower end of each
down to the ground vclose-te theiwheels. w Ifthe
wheels then rolltcward the` shoes ¿they will. roll . arm- is:A pivotally connected at ’l tothe front cen
tral' portion'ofa non-skid shoe .8 which is formed
onto them and come‘torestp becausev means. are’
from` a metal'channel' 9 havinglugs lll welded
provided: for limiting the distancezthat- the,l wheels
to its.. bottom rfor gripping the ground or roady
cany roll4 across the shoes'.- Such1 means ,preferably
bed. Each shoe is lWide enough to accommodate
take` the form of chainsconnectedz tothe shoes
on its ,upperY surface a pair of thev dual wheels.
' and to the. vehicle at the side of thefwheels where
Ofzcourse, if dual wheels are not used,~the shoes
the inoperative position; ofthe .shoes-- is located'.
ports the shoe latcliing.Y means which ymay :in-‘f
cludea rotatable horizontal. shañtythatis- adapteiì. 55 anglepbanrigidly mounted on the truckirame
2,513,691
4
I2 behind the wheels. In their inoperative posi
tion, shown in Fig. 1, the shoes serve as shields
or guards behind the wheels to intercept stones.
and the like that are thrown back by the Wheels.
wheels, or the latter shoes can be used alone when
only forward movement of the vehicle is to be
stopped. Thus, as shown in Fig. 6, the entire
safety apparatus described above can be turned
around and mounted in front of the'wheels. The
parts of this apparatus in Fig. 6 bear the same
designation numbers as before, except that the
For suspending the shoes from the beam, as best
shown in Fig. 5, there are a pair of substantially
horizontal pins I3 projecting forward from holes
I4 in the bottom of the vertical ilange` of the
beam. These pins also extend through holes I6
letter` @has been added. Therefore, theconstruc
tion ofthe apparatus need not be described again,
in ears I1 attached to the rear ends of the shoes, 10 except to mention 'a spring `35 that connects shaft
so that the shoes are hung from the pins. There v lever 22a to cross beam IIa so that the lever is
rear ends of the pins are pivotally connected to" ` always urged toward the beam. This spring,
c which also can’be used with the ñrst embodiment
the lower ends of short arms I 8L extending down
from a horizontal shaft I9 on which theirupper f ¿or thefinvention, insures that shoe-supporting
ends are rigidly mounted.
The shaft extends. 15. pins |30, will not work back out of operative posi~
` along beam II and is journaled in bearing mem- ` ‘ " tion and accidentally release the shoes.
j Shoes 8a canbe used to block forward move~
‘ bers 2'I projecting up from the horizontal flangev`v
1 of the beam. Rigidly connected to the centrali` _ ment ofthe vehicle when parked on a down
portion of the shaft is a rearwardly and down-' " ` grade. 'I'hey also can be dropped in front of the
` wardly extending lever 22 by which the shaft 20 wheels to stop the vehicle from skidding ahead
or forward and to'theffside. In emergencies» they
` can `be'_turned to cause its arms'I8 to‘withdraw
can be vused to stop-the vehicle more‘quickly than
the `pins fromv the holes in- the shoe ears. This
itv can be stopped'byritsbrakes,ßbecauseîthe wheels
Í lever is swung back to turn the shaft by means
§ offa 'crank _23 that is rotated by an electric motor
will run up olf the road onto the shoes. `
‘
arm is pivoted is theend-which'strikes the'ground
first when the‘sh'oe'ïi's'dropp'ed; and therefore is
referredy to herein asït'he leading Íendwl The ‘op
"Wh'en'f the shoes ‘are released, theyv'dr-op by
positeend‘of the shoe is referredto herein asthe
gravity and are'simultaneously swung forwardl
l by=larms v`-6 «until they -strìk‘e the pavement v»or
trailihg.end.'--i;.,f
.1i-i.:
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l road directly behind the Wheels as shown in Fig.
v“According -to "theîf-ïprovisionsw'of ’the `patent
‘ 3. » To keep the back of the shoes from swinging
statutes, I have Yexplained `the .principle of my
invention and have `Iillustrated and described
what Ivnowfconsid'er to represent vits best embodi
ment. However, Ifdesire’to have it understood
downto'o far around their pivots 1, the rear ends
‘ of4 thev shoes are connected by short chains 26 to `
the curved part of the arms' above them.
The
` distance that the -wheels can roll back across the
shoes isldetermined and controlled by tension
‘ membersV or chains 21 connected to the rear ends
ï of the shoe `flanges. These’chains‘extend rear-y
-ward and upward to the cross beam where their
` upperv ends are connected to eye bolts 28 extend
in’g- slidably through holes in the'lower ñange of ‘
'
Thei4 'end of ythe'sh'oe to-vvhi'ch 4-theI-‘supporting
‘ 24 -clamped to the bottomof- the cross beam. The
l mbtor- is controlled by an lelectric‘switch’l (not
‘ shown) in the cab of the truck.
35
that, within the scopef-of-vïthe appended claims,
the invention mayrbeïípractice'd -otherwise than
as specifically illustrated andndescribed.
I claim:
"
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1. Safety apparatus for motorvehicles having
dualrear wheels, comprisingfalpair ofnon-skid -
shoes each adapted ,tofìsupportîon top of itself
ai îpair` pf- said; wheels; an aarm" movable between
the beam. Above‘that flange coil springs 30 that
each pair of wheelsrand- connected atl its lower`
l encircle Ythe bolts are compressed _between the
beam and nuts 3'I on the upper ends of the lbolts. 45 end to the leading endbfI the; underlying shoe,
. Thesev springs absorbthe shock as thetension
‘ chains vare pulled straight when the Wheels roll
` back onto the shoes as shown in Figs. 2 and 4.
‘ The chains arelong enough to permitthe wheels .
means adapted to connect the-upper ends of the
arms tothe vehicle :above its rear axle so that
the shoescan'be swung lengthwise’ ofy the vehicle
and `upwardto inoperative position# when free
` to roll only about half way back across the shoes 50 of the'wheels, 'said> arms being curvedto extend
1 so that they will be centered on the shoes when
It ~wi1l`be’noted that the
l they come to rest.
wheels are completely supported by the shoes`
ï which space them from the road.
'
"
" if 4the truck?I is lparked heading upî‘a hill, the
shoes can be dropped behind the wheels and
` the truck 'allowed to drift back until the wheels
are on the shoes as shown in Fig.' 4." The shoes
part Way around the Yaxle,~1atching means for
connection to the trailing endsof the shoes to
hold them in said inoperative. position, manually
controlled means for tripping the latching means
toreleasethe shoes so =that^§theyxwill swing down
to the'ground close to'said wheels, and means for
limiting the‘distance‘ïthat `said Wheels-'can roll
acrossl the shoes;
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>`2. Safety appa'ratus‘for motor vehicles, com
then'v will' prevent any further' backward move
ment ofthe truck, even when the brakes are‘re 60 prising a pair'o'f non-skid 'shoesadapted to sup
'port‘ on top of themselvesfwheels of a motor-ve
leased preparatory to starting up the hill again.
hicle, arms connected- at their vlower ends to the
In> case the truck is stopped only momentarily
leading'ends lof the Í'shoes, means adapted- to piv
onï'the hill; `o`r the engine is stalled, the shoes can
be dropped behind the wheels where they will
otally'?v connect'the" upper en'dsïof the arms vto
. limit the- distance that the truck can drift back 65 the vehicle above'the axle of said wheelsI so that
the shoes can befswuïng‘lengthwise'of.the vehicle
while the driver is trying to get itto‘ "n1ove\for--v
and ‘ upward ‘to inoperative position when freev of_
ward again. If the road is slippery and the
the wheels, l'said 'arms-fb’eing'curved to extend part
wheels start to skid so that the truck begins to
` slide back,- or backwards and tothe side, -the
Way.`around the axle, al; cross beam adapted tobe"
wheels can be allowed to roll back onto- the shoes
which will stop the skid and -furnish a firm foot-V
ing so that vthe truck can get started' forward
again.
.
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mounted on the vehicléfat the Isideof the'wheels `
adjacentv said- yinoperative position, latching
means mounted onfsaid beam for-'connection to
the trailing Aends-‘of’»the`7shoes to hold them in
The non-skid shoes 8 can be usedlin conjunc
said *inoperative ~ position; ` @manually controlled
tion4 with. asimilar»lpair~l of» shoes f in ßfrontbf the 75r means »for ¿tripping the ìlatching »means »toi release
2,518,691
5
6
the shoes so that they will swing down to the
ground close to said wheels, tension members con
nected at one end ’to the trailing ends of the
shoes, and means connecting the opposite ends
of said members to said beam to limit the `dis
5. Safety apparatus for motor vehicles, com
prising a pair of non-skid shoes adapted to sup
port on top of themselves wheels of a motor ve~~
hicle, one end of the shoes being provided with
holes, arms connected at their lower ends to the
shoes, means adapted to pivotally connect the
tance that said wheels can roll across the shoes
toward said beam.
upper ends of the arms to the vehicle so that
the shoes can be swung lengthwise of the vehicle
'
3. Safety apparatus for motor vehicles, com
prising a pair of non-skid shoes adapted to sup
port on top of themselves wheels of a motor ve
and upward to inoperative position when free of
10 the wheels, a cross beam adapted to be mounted
hicle, arms connected at their lower ends to the
shoes, means adapted to pivotally connect the
on the vehicle at the side of the wheels adjacent
said inoperative position, a horizontal shaft piv
otally mounted on said beam, substantially hori
upper ends of the arms to the vehicle so that the
shoes can be swung lengthwise of the vehicle and
zontal pins extending slidably through the beam
upward to inoperative position when free of the 15 and operatively connected to the shaft, the free
wheels, a cross beam adapted to be mounted on
ends of the pins being adapted to extend through
the vehicle at the side of the wheels adjacent
said shoe holes to support the shoes in said in
said inoperative position, a horizontal shaft piv
operative position, manually controlled means
otally mounted on said beam, latching members
for turning the shaft to Withdraw the pins from
carried by the shaft for releasably engaging the 20 the shoe holes so that the shoes can swing down
shoes to hold them in said inoperative position,
to the ground close to said wheels, tension mem
an electric motor for turning the shaft to release
said latching members from the shoes so that
the shoes will swing down to the ground close
to said wheels, and means for limiting the dis 25
bers connected at one end to the shoes, and means
adapted to anchor the opposite end of said mem
bers to said beam to limit the distance that said
wheels can roll across the shoes toward said
beam.
tance that said wheels can roll across the shoes
toward said beam.
EMERY TOWER..
4. Safety apparatus for motor vehicles, com
prising a pair of non-skid shoes adapted to sup
port on top of themselves wheels of a motor ve
REFERENCES CITED
30
hicle, arms connected at their lower ends to the
shoes, means adapted to pivotally connect the up
per ends of the arms to the vehicle so that the
shoes can be swung lengthwise of the vehicle and
The following references are of record in the
iile of this patent:
UNITED STATES PATENTS'
upward to inoperative position when free of the 35
Wheels, a cross beam adapted to be mounted on
the vehicle at the side of the Wheels adjacent said
inoperative position, a horizontal shaft pivotally
mounted on said beam, latching members car
ried by the shaft for releasably engaging the 40
shoes to hold them in said inoperative position,
Number
1,118,233
1,130,939
1,237,108
1,582,911
2,151,014
2,174,135
a lever projecting from sai-d shaft, an electric
motor, a crank driven by the motor for swinging
2,182,044
said lever to turn the shaft so that said latching
2,344,148
members will release the shoes and permit them 45
to swing down to the ground close to said wheels,
and chains connected to the shoes and to said
Number
beam to limit the distance that said wheels can
379,332
roll across the shoes toward said beam.
Name
Date
Rìnyik __________ __ Nov. 24,
Stepanka ________ __ Mar. 9,
Shiel ____________ __ Aug. 14,
Eichorn ___________ __ May 4,
Curtiss __________ __ Mar. 21,
Parrish __________ __ Sept. 26,
1914
1915
1917
1926
1939
1.939
Ackerman ________ _`__ Dec. 5, 1939
Jackson __________ __ Mar. 14, 1944
FOREIGN PATENTS
Country
Date
France ___________ __ Nov. 5, 1907
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