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Патент USA US2548088

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_April 10, 1951
D. S. WEISS
' 2,548,085
TRAILER DRAWBAR
Filed April l5, 1947
3 Sheets-Sheet 1 '
DEWEY
S.
INVENTOR.
WEISS
„6%. /ÉMM
April l0, 1951
D. s. wElss
2,548,085
TRAILER DRAWBAR
Filed April 15, 1947
3 SheetSE-Sheet 2
DEWEY
S.
WEISS
Äífarqey
.
Apri! 1Q, 1951v
2,548,085
D. S. WEISS
TRAILER DRAWBAR
Filed April 15, 1947
3 Sheets-Sheet ,5
INVENTOR.
DEWEY ' S,
WEISS
ßY
'
(áÁ/Èí‘or/fey
2,548,085
Patented Àpr. 1.0, 195i
UNITED STATES; PATENTv OFFICÉ
2,548,085"
V'rim'nznn DRAWBAR.
Dewey S. Weiss, Portland, “Greg `
Applicatiónnmîlns, mns-erm Nb. vliígsis
-1’6 Claims.
,
(icl. 2st-‘33:44)
2.l
l“
My» present inventionrelates toa trailer vdraw’
bar assembly‘for coupling 'a Vtrailing vehicle't'ojaj
leading vehicle, for exampleya‘motor vanto a
trailer van for long distance hauling.- Anotherv
use to which `my invention Vmay be put is in'`
coupling logging trailers to a motor cab. Various
other'uses will `be readily apparent _and`I do not
justable drawbai" and sleeveV assembly of Fig. -1¿»;
` Figf'l'isa ltyp'ical‘cross sectionvthrough a modi
fication which the 'invention may assume;
Fig. `8`
Y
a, typical cross section through a; fur
` ther mod'iñca‘tion of the adjustable `sleeve and.
dl‘awbar assembly; ’and
Fig. 9 shows a 'furthermodiiication of certain Y
intend to be limited to a speciñc _form vof vehicle
to which my invention'may’be attached.
In‘Figs’. `1,' ‘2,’ f3
-6 one' embodimb'en‘t’of. the
The Vprimary object-of my invention is to pro* 10 present "invention is fully illustrated.
,
vide` a sturdy extensible 'drawbar which may be
vThe invention comprisesv a. sleeve generally in.
readily locked' in a‘plurality'of adjusted positions
or shifted to-another-position toffextension with
di'c'aîte'd, bythe numeral I‘U, which is adapted >to
out the use of additional tools. It is the prin
cipal obj‘eet of my invention to provide meansY
whereby the dista-nce between the trailing'en‘df
of a leading vehicle l.andy the 'forward end of a
vi'd‘ed with ‘laterally extending flanges l’l and l2.
to fwh‘ic'h‘ arejwel'ded' or otherwise suitably se
trailing vehicle vmay be quickly adjusted .to suitv
various lengths of loads.
bfe ‘mounted i'n ‘general’ alignment with a vertical
plane‘throughthelongitudinal axis o'f a trail
ing "ve'lfii‘c‘leLA For‘this purpose the sleeve is pro
cured ‘Íthei’orwar‘d ends 'o'f ai pair of- convergent
For example, somev
_ draftba'rs I3‘ and“ respectively, which may com.
vans are provided with open-ings in ¿their 'forward
prise'sec'tions of strong` tubing. The rearmost
walls so that long articles need Vnot~overlnang`
ends loi? the ’draftbars' are welded ‘to transverse
straps I5 and I6 `which may be ‘j_ourna'led' upon
pinties 3H“ ‘and Ll 8’ -passed Athrough "clevi'ses' I'9 and,
theireai.'~ end olf the van;` in ‘which case the 'fore
ward end `of a lengthy article extending through
such an >opening might‘interfere with -the [email protected]
ing vehicle wereit not` possible to vadjlust ïthe dîs-`
tance between the vehicles. It is obvious»Ítlïrat:anA
y
_
adjustable Vmeclïianism »capable ‘of extension. kto
considerable length must. be. sturdy,> ‘particularly
when extended, and it is an objectof mïyi‘inven
tion ’to provide a rapidly rradjustable 'extensible
drawbar which is fully capable of meeting heavy
load requirements. 'when fully extended;
A further object of my invention is v‘topro'vid‘e
means for adjusting the degree. of‘extension lo'f"
a drawbar, lrequiring >relatively :few parts, :wl‘iit-àlmA
parts` are protected against breakage. orI bending
under abusive use.
invention `will be readily apparent'tolloïwing "ai
study ofthe following spe’ciñcati‘onîë'andf‘acconrfÑ
panyin'g drawings wherein ’like numeralsrefer tor
like partsv throughout.
In the ‘drawings Fig. 1 ’is a‘plan View, partlyf“
brokenaway, of apreferred? embodiment »of my
Y
Y
Fig. 2 is a view in side elevationiof‘the 'embodiw
ment disclosed in Fig. `1;
Fig. 3 is ‘a verticaldetail' on anenlarged scalev
of the adjusting ‘and locking mechanism 'of my'
and so :shaped -asj "to extendj‘beneath the extensi
ble ‘drawban generally indicated by' the numeral
-25-,` whitìh is mounted' in the `Asleeve I0.
I thus
provide a rigid’ frame braced lagainst sideward'
bending -'of thedrawbar assembly, which mounts
a’ drawbar` sleeve longitudinally upon the v'front'
end of artra-ilingiveh'icle; The‘sleeve substantially”
bisects' the Aanglebetween the converging >draft
bars >and is ypivotally "movable in 'a vertical plane`
vehicle. A stirrup 26 -is preferably depended"
from the forward-'end of the> sleeve l0 to prevent.
f the-‘end of the assembly `from dropping onto the
ground, thus saving the mechanism from injury
and-‘from becoming clogged by an excess amount
off mud =or-` gravel.
l
In vthis form theY 'sleeve (Fig. 6‘) v.comprisesv a
‘pair of opposed channel members 3’0 and 3| ,hav
ing îtheir‘longer lower- legs welded >together along
theirvl-ine of abutment at> 32. The _shorter upper
legs termi-nate in“ vertically 'extending flangesv 3?."Y
and 34- extending longitudinally of Athe sleeve and `
‘60’ ‘between which there i‘san' open space; The ñange
present invention in `one form; ‘
33= is’provided'ï‘with- ‘a plurality of Vextensions 35,`
adjusting means;
Fig.l5 is a vertical detail of a’f-urther mo'cïlifiedl
form of ‘adjustment means;
ing,v vehiclegeneraliyindicated by the numeral 2T.
A “cross-'brace‘ZZ‘ mayibe‘welde'd tothe draftbars
passing through the longitudinal 'axis of the
Further objects and advantages of myfpresent
invention;
20, respectively;jadapted"to be welded“ or other
wisersu’ita‘bl‘y secured to the structure of the trail’
~
v
adapted to receive-‘andl journal pivot _members
as will presently‘appear‘, and the’flange Sit-is pro
_ vided*I `with a >plurality ‘offvv extensions 36" adapted
Fig. ôf-i'sla typical lcross section‘íithrougli‘thefatß 155" to >nec‘eiïve the«fopposite'ends` of the pivot‘m‘em#
2,548,085
,
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.Y
'
3
4
ment is possible, I provide a cam-follower-lever
bers. The outer surfaces of the channel mem
bers 30 and 3| and the extensions thereof are
braced by vertical ribs 31 and 38 respectively and,
of course, are braced longitudinally by the flanges
16 which is pivotally mounted on one of the
extreme bolts 46 between the arms 60 and 6|,
which extends forward beneath the cam 61 and
is held in engagement therewith by a pair of
springs 1| and 12 tensioned between the cam
follower-lever and the cross braces 63. It will
Il and l2 so that a very rigid sleeve is thus
formed. The sleeve flanges 33 and 34 may be
sprung toward eachother a slight amount as per
mitted by the rigidity of the metal, such slight
be readily apparent that the springs constantly
springing achieving a function as will presently
urge the bosses downward but that breakage
appear.
.
y
l
hach of the pairs of extensions 35 and 36
carry a transverse pivot member in the form of
a bolt 40, having means (not shown) keying the A.
bolt to the extension 36 so that the bolt is non
rotatably mounted in position. The threaded
end of the bolt extends beyond the extension
35 and is engaged by a long cap nut'4l through
which passes a turnbar 42.
Tightening of the
nuts All will cause inward springing of the flanges
toward each other, and releasing of the nuts
4l will permit the flanges Vto separate as per
mitted by the resiliency of the sleeve walls.
' The drawbar 25 comprisesv a pair of opposed
bars 45 and 46 shaped to provide walls con
tiguous to the inner surfaces of the sleeve. The
bark 45 terminates in an upwardly extending
flange 41 contiguous to the flange 33 and the bar
46 terminates in a parallel flange 48 contiguous
to _the flange 34. A plurality of transverse plates
49 are welded to the bars to form a rigid struc
ture, each of the plates having an opening there
through through ‘which a rod 50 may extend
longitudinally of the drawbar. I thus provide
a rigid drawbar having an open top and bottom
to permit the removal of dirt and gravel which
might accumulate therein. The drawbar and
the sleeve present a plurality of contiguous sur
faces which prevent relative rotation of the
drawbar with respect to the sleeve. Tighten
ing of- the nuts 4| causes frictional clamping
of the drawbar in an adjusted position with re
spect to the sleeve.
v .
As seen in Figs. l and 2 there are preferably
three pivot bolts 40 mounted upon the sleeve
Ilû. The outer pivot bolts 4U providemeans piv
otally to support a pair of latch-levers 55 and
56 which extend toward each other longitudi
nally of the space between the flanges of the
drawbar. Each of >the latch-levers preferably
comprises a pair of arms 60 and 6I in parallel,
spaced relation to each other and connected
together by a cross brace 62 partially surround
of parts will not occur in the event that the cam
is rotated when the bosses are-.not aligned with
the notches. If the drawbar is so positioned
that the notches are not aligned with the bosses
the cam may still be rotated to lowering po
sition and the springs will be extended. The
, operator
may
thereafter
shift
the
drawbar
r slightly until the bosses drop into place.
'
The leading ends of the bars 45 and 46 are
welded or otherwise suitably secured to the face
20 86 of a longitudinally extending hook-engaging
eye 8| which may be engaged with a coupling
hook or other member attached to a leading
vehicle. The eye 8l is preferably of consider
able length and provided with a shoe 82 which
25 is secured to the forward end of the rod 50. The
rod 50 preferably passes through all of the cross
braces 49- and extends beyond the extreme end
of the drawbar 25. A cam 83 is suitably _se
cured to the extreme end of the rod 50 and
30 engages a rotatable cam 84 pivotally mounted
on the rod 5U in position to bear against a bracket
85 welded to the end of the drawbar. The
cam 84 is provided with an operating lever 86
by means of which the cam may be rotated to
35 force the rod 50 longitudinally of the draw
bar and cause the shoe 82 to close the opening
of the eye 8|, whereby tight coupling of the
drawbar to a coupler hook may be achieved.
Suitable means (not shown) may be provided
40 to urge the rod in the opposite direction upon
rotation of the cam to the position illustrated
in Fig. 1. The shoe-operating mechanism
herein illustrated is exemplary of many forms
known to the art and my invention is not to be
limited to association with the form herein il
lustrated.
. Operation: The operation of my invention as
thus far described is as follows:
The drawbar assembly is attached to a trail
ing vehicle. The operator decides the length
desired between the leading vehicle and the
trailing vehicle and adjusts the mechanism ac
ing the bolt 40 and a cross brace 63 at the for
ward end of the arm 6 I. The arm 60 terminates
cordingly in the following manner: The nuts
4| are loosened and the cam 61 rotated to raise
in an upwardly and forwardly extending curved 55 the bosses from the notches whereupon the draw
hook 64 in position to overlie the central bolt 40.
bar may be longitudinally moved to the desired
The flanges 41 and v48 of the drawbar are
position. Repositioning of the cam 61 permits
provided with a plurality of spaced notches 65
engagement of the lugs with the notches and
adapted to receive and retain bosses 66 extend
tightening of the bolts 4| provides additional
ing laterally from the forward ends of the arms 60 assurance against longitudinal displacement of
6|. A cam 61 is rotatably mounted upon the
the drawbar. The drawbar may thereafter be
bolt 40 in position to engage the lower surfaces
associated with a coupling hook or other suit
of the hooks 64 and is provided with a lever
able member on the leading vehicle and the
68 of sufficient length to Iextend beyond the outer
shoe 82 positioned thereagainst for safety and
bolts 40. As seen in Fig. 3 the cam 61 is in 65 to prevent loose play between the vehicles. In
one extreme position permitting the lowering
the event that initial positioning of the drawbar
of the bosses 66 into a certain group of notches
should not exactly align the notches with the
55, thus holding the drawbar in one of a plu
lugs, the cam 61 may nevertheless be previously
rality of extended positions. Rotation of the
positioned and the springs 1I and 12 will pre
cam 61 to the other extreme position permitted 70 vent breakage and urge the lugs into place when
by movement of the lever 68 will raise the bosses
exact alignment is achieved. It is to be ap
above the edges of the flanges so that longi
preciated that the turnbars 42 may be eliminated
tudinal movement of the drawbar is permitted.
and that the nuts 4I may function simply to
hold the pivot bolts in position, the frictional
In order to assure downward movement of
the vbosses into the notches 65 when such move 75 engagement of the drawbar with the sleeve being
rasantes
@a ‘amusent-the ng s freecosnáplfgupwaruiy
10
-` previous1y"described and Eone `end of 'a spring "ID3
" is anchored* thereto 'as ' vby inea-nsV of “passing îan
end of the spring throughr an opening-'inthe
jpivot‘inem‘ber. The ‘oppositeend ‘oyf"‘the“spring
“isprovided WithY a hooked extension‘lûd adapted
j-to"e‘ngage‘l a llug ~I'R'J‘E‘on the" surface of thefarm'
r1500, the ‘spring beings()l Wound and-“tensioned
gas' ‘tol‘ui‘ge thej‘lug "I‘Il I "downward ’ into then’otch
“.65. " iRotation "of ‘the “can‘i‘ 0'! " to’ "its` ‘öpposite'f ex
"‘tren`1e"wil1 raisev thelng “1"0! “from'the'notch 65
‘ Upon" repositioningl "of Í`the "cam the lug Amay re '30 that-'their b0sses303 ¿and 3~04smayßbeiraisedifrom
-e‘ngage a notch,v or if'“ the "notch'is 'not aligned
"the spring will 'permit the lug‘to‘ rest 'upon"the
or lowered into latching engagement with "the
drawbar. Í The levers areV providedV with/‘upwardly
‘flange’ of the“ drawbar until- exact alignment is
' extending >`fingers' u305 Vand 306 I between whiclris
achieved.
«tensioned'fan -overcenter‘springJSllL ~» The Vyspring
._
Y
Y
"‘As’s'een in'lï‘ig. l' this embodiment'inayibe 35 keeps-’the'levers ñrmlyfagainst'cam-ßl unlessmis
j supplied with springs' IIJS‘ai'ding' and supplement
' alignment with-the-notch'es occursfin which'case
çthelfspr'ing yields.; and‘later snaps -the'lugsrinto
"ing" the springs JI ‘and 72, if desired.
I"Inthe' modification" shown in Fig. 5' a latch
”‘l'ever 'I‘I0"‘is' pivotally" mounted"uporr‘one‘fof `the
lthe notches. ->v`Theleversi'3200~and^3€l2 together' with
‘ their 4bosses A30?»#ar`1d-1304 ’constituteabutmentA en
Hpivot 'members‘âû' "and "terminates ‘in’ a " strap ‘40 gaging »meansla'dapted to coop‘erate‘with'longi
III` providing a circular` opening’theretliröugh
v‘through which the -’next pivotfmëmbe?‘ñûpasses.
The- ‘latch-lever ` is provided ’with a ` lug or lugs
`II2 adapted >to'engage the notches' 65 as 'pre
~~tudinally spaced ~»abutmen‘ts“suchiasl‘the `notches
»t5 (Figs. randa).
¿Having- illustrated and'described various pre
’ `~ferred‘- embodiments Ofmyinvention, it should
'viously described. 'Pivotally mounted upon‘the 45 be readily apparent to -those vskilled inthe-“art
pivot’member'îß passing through the opening -that'fmodiñ'cat'ions in detail and-‘arrangement
«thèreof'l are >permissible1 without departing 2- from
`provided by strap I I I >is’ a’sprirìg'ïseatingxmem
>v`my Íinvention. V«All "such modiñcationsas come
"ber I`I3 to"which"is"attached` a' lever `I"Ifl. ’A
withinïthe trues‘piritand scope-ofi the‘appended
f spring ‘ I I âseated'in 'member |13 isfhou's‘ed 'with
'in a shoe `I I6 adapted 'toeng‘a‘getheinnersur 50 » claimsía'reïv considered a lpart 4of my invention.
I claim:
y
‘face ofl the" strap 'III at`all"times. nThe'shoe
» 1. A drawbar-ass‘emblyïfor'coupling a trailing
‘I`IB` is >axiallymovable with‘respect to 'the Vseat
vehicle toa 'leadinglvehicle-‘comprising a'sleeve
'having a`> pairr of-‘longitudi'nalJ-ñanges thereon,
‘si‘on' of> the spring I'I5"may 'be' achieved. “The
"deviceis th'usa ‘form of Aca’m"device` which'upon 55~means for hingedly'supporting‘said sleeve -‘upon
' ing member 'I I3` so that compression >and 'eXten
"rotation top_the position illustrated in'iull line
' a vehicle -withîits longitudinal 'axisA substantially
' in' Figi' 5' hasraiS‘ed'the ’lug "from""ehg`ageiiient
" aligned ïwith "the`- longitudinalfaxis of the4 vehicle,
`With the notch. " Upon rotation‘of"the'lever"l I4
i a - drawbarï-slidably-«mounted' insaid sleeve >- and
to its opposite 'eXtreme thelug‘will be resiliently
‘urged into engagement with >the notch. If align
having a longitudinalñange thereon,- and a latch
GO‘leverfpivotally V‘mounted betweenA the‘fña‘ngesv of
4inent‘has not> been’achieved the >spring will" be
‘said 4»sleeve and `extending longitudinally ofJ ‘said
drawbar, ‘said >lever »comprising aV laterallyeïxtend
“when alignment> is achieved.` A further feature
‘ ing `boss-overlying the flange of said ldrawbary and
compressed, and will'urge the lug'into the notch
said Aflange of said drawbar having a plurality of
l of safety is provided in that vrotation ofthe lever 65 ~ spaced
`notches thereinengageable 'by lsaid `boss
`to the position ¿illustrated inwFig, 5 may be‘per
fto' retainsaid ïdrawbar' inany of a` pluralityïof
mitted without disengaging Vthe V'lug from the
.longitudinally adjusted positions.
notch since the spring H5 willmerely be com
pressed and will resiliently urge the arm ‘ IIB
2. A drawb'ar `ass'emblyior‘coupling a> vtrailing
vehicle -to aïleading `vehicle comprising a’sle'eve
»upwardly This condition may occur if'»gritf"is 70 having» a 'pairlï'of'longi-tudinal »flanges ï thereon,
present in the-notch or if the edgesfof the notch
Ameans for hingedly-lsupporting said »sleeve upon
kbecome Worn so that a slight overhang prevents
a >vehicle' ‘with `.its longitudinal ’axis-’substantially
-free movement ofV `the »lug therefrom.- ylf?the
f aligned -with the »lò'ngitu'dinalÍ axis?z of »the vehicle,
I operator ¿rotates ythe le‘ver « to ï‘disenga'ging' posi
a drawbarffslidably mounted iiril said ~`slje`eve 'and
tion-and’ `the-arm does not‘friseyhe lc'anntap ~the I* 75‘r‘having a pair~«of»`»long~itudina1liiangesïthëi‘eon?the
l’7
2,[email protected]
flanges of said sleeve and of said drawbar being
substantially contiguous-and a latch lever piv
otally mounted between the flanges of said sleeve
and extending longitudinally between the flanges
of said drawbar, said lever comprising a pair of Ul
8
vehicle to a. leading vehicle comprising a sleeve
having a pair of longitudinal flanges thereon.
means for hingedly supporting said sleeve upon a
vehicle with its longitudinal axis substantially
aligned with the longitudinal axis of the vehicle,
laterally extending-bosses overlying the flanges
a drawbar slidably mounted in said sleeve and
of said drawbar, and said flanges of said drawbar
having a plurality of spaced notches thereinven
gageable by said bosses to retain said drawbar
in any of a plurality of longitudinally adjusted 10
having a pair of longitudinal flanges thereon, the
ñanges of said sleeve and of said drawbar being
substantially contiguous, a pair of latch levers
pivotally mounted between the flanges of said
sleeve and extending longitudinally between the
flanges of said drawbar, each of said levers com
prising a pair of laterally extending bosses of suf
flcient length to overlie the flanges of said draw
bar, and the flanges of said drawbar having a
plurality of spaced notches therein engageable
positions.
3. A drawbar assembly for coupling a trailing
vehicle to a leading vehicle comprising a sleeve
having a pair of longitudinal flanges thereon,
means for hingedly supporting said sleeve upon
a vehicle with its longitudinal axis substantially
aligned with the longitudinal axis of the vehicle,
a drawbar slidably mounted in said sleeve and
having a pair of longitudinally extending flanges
thereon, the flanges of said sleeve and of said
drawbar being substantially contiguous, and a
pair of latch members pivotally mounted between
the flanges of said sleeve and extending longi
tudinally between the flanges of said drawbar,
each of said levers comprising a laterally extend
ing boss of sufficient length to overlie one of the
flanges of said drawbar, and said flange of said
drawbar having a plurality of spaced notches
therein engageable by said bosses to retain said
drawbar in any of a plurality of longitudinally 30
by said bosses to retain said drawbar in any of a
plurality of longitudinally adjusted positions, a
cam device mounted upon said sleeve and con
tacting said levers, and means to rotate said cam
device to raise said bosses from the notches in
the flanges of said drawbar.
7. A drawbar assembly for coupling a trailing
vehicle to a leading vehicle comprising a sleeve
having a pair of longitudinal ñanges thereon,
means for hingedly supporting said sleeve upon
a vehicle with its longitudinal axis substantially
aligned with the longitudinal axis of the vehicle,
a drawbar slidably mounted in said sleeve and
having a pair of longitudinal flanges thereon, the
flanges of said sleeve and of said drawbar being
substantially contiguous, a latch lever pivotally
4. A drawbar assembly for coupling a. trailing
mounted between the flanges of said sleeve and
vehicle to a leading vehicle comprising a sleeve
extending longitudinally between the flanges of
having a pair of longitudinal flanges thereon,
said drawbar, said lever comprising a laterally
means for hingedly supporting said sleeve upon
extending boss overlying one of the flanges of
a vehicle with its longitudinal axis substantially
said drawbar, and said flange of said .drawbar
aligned with the longitudinal axis of the vehicle,
having a plurality of spaced notches therein en
_a drawbar slidably mounted in said sleeve and
gageable by said boss to retain said drawbar in
having a pair of longitudinally extending flanges
thereon, the flanges of said sleeve and of said 40 any of a plurality of longitudinally adjusted posi
tions, and clamping means for clamping the sides
.drawbar being substantially contiguous, and a
of said sleeve against the sides of said drawbar.
pair of latch members pivotally mounted between
8. A .drawbar assembly for coupling a trailing
the flanges of said sleeve and extending longi
vehicle to a leading vehicle comprising a sleeve
tudinally between the flanges of said drawbar,
having a pair of longitudinal flanges thereon,
each of said levers comprising a pair of laterally
means for hingedly supporting said sleeve upon
extending bosses of suflicient length to overlie
a vehicle with its longitudinal axis substantially
the flanges of said drawbar, and the flanges of
aligned with the longitudinal axis of the vehicle,
said drawbar having a plurality of spaced notches
a drawbar slidably mounted in said sleeve and
therein engageable by said bosses to retain said
having a pair of longitudinal flanges thereon, the
drawbar in any of a plurality of longitudinally
flanges of said sleeve and of said drawbar being
adjusted positions.
I
substantially contiguous, a pair of latch levers
5. A drawbar assembly for coupling a trailing
pivotally mounted between the flanges of said
vehicle to a leading Vehicle comprising a sleeve
sleeve and extending longitudinally between the
having a pair of longitudinal flanges thereon,
means for longitudinally supporting said sleeve -- flanges of said drawbar, each of said levers com
prising a pair of laterally extending bosses of suf
upon a vehicle with its longitudinal axis substan
ficient length to overlie the flanges of said draw
tially aligned with the longitudinal axis of the
bar, and the flanges of said drawbar having a
vehicle, a drawbar slidably mounted in said sleeve
plurality of spaced notches therein engageable
and having a pair of longitudinally extending
by said bosses to retain said drawbar in any of
flanges thereon, the flanges and sides of said
a plurality of longitudinally adjusted positions,
sleeve and of said drawbar being substantially
a cam device mounted upon said sleeve and con
contiguous, a latch lever pivotally mounted be
tacting said levers, means to rotate said cam de
tween Athe flanges of said sleeve and extending
vice to raise said bosses from the notches in the
longitudinally between the flanges of said draw
bar, said lever comprising a pair of laterally ex 65 flanges of said drawbar, and clamping means ex
tending between the flanges of said sleeve for
tending bosses of sufficient length to overlie the
frictionally clamping the sides of said sleeve
flanges of said drawbar, and the flanges of said
against the sides of said drawbar.
drawbar having a plurality of spaced notches
9. A drawbar assembly for coupling a trailing
therein engageable by said bosses to retain said
drawbar in any of a plurality of longitudinally 70 vehicle to a leading vehicle comprising a sleeve
having a pair of longitudinal flanges thereon,
adjusted positions, a cam device mounted upon
means for supporting said sleeve upon a vehicle
said sleeve and contacting said lever, and means
with its longitudinal axis substantially aligned
to rotate said cam device to raise said bosses from
with the longitudinal axis of the vehicle, a draw
the notches in the flanges of said drawbar.`
bar slidably mounted in said sleeve and having a
l _ 6. A drawbar assembly for coupling a trailing
adjusted positions.
2315.485108 5s
10
Denisof. [email protected] flanges thereon.
125 A: drawbarrassembly. Afor,icolupling,a trailing
the v_flanges and sides of said _sleeve _„andsojf , said ,
vehicle Vto a . leading vehicle .comprising a., sleeve
drawbar being, substantiallyV contiguous,4 a.; latch .
havinga pair -of longitudinal flanges thereon,
lever=,.pivotally mounted, between theflanges ofl
said :sleeve and extending longitudinally between
the `flangesof said` drawbar, said lever ,comprising
a.. pair of> «laterallyA extending` .bossesbof suflicient
means for hingedly supportingsaid sleeveupon.a .vehicle with> itsA longitudinal axis substantially.
aligned with the` longitudinal axisy of the vehicle„
length to; overlie ythe, flanges Yof said drawbar, , and <„
the flanges of said drawbar having a pluralityofq
spaced `notches,therein engageable by said bosses
a drawbarslidably mounted insaidsleeverand..`
having _a pairof longitudinal `flanges thereon, the.
flanges .of said` sleeveandof ,said drawbar beingv
substantially contiguous,„ a, pairpf, overlapping,
to retain said drawbar in any of a plurality of
longitudinally (adjustedrv positions, af cam device
betweenthaflangesiof said sleeve and extending.r
inountemupon said. sleeve, and contactingîsaid
longitudinally between the‘flanges of said. draw- f
oppositely pointing, latclileverspivotally mounted.`
leverjmëans to rotate said camdevice to raise
bar, each of‘said levers comprising a pair of latey
said bossesfrorn thenotches iIiÍthefiaDgeS Óf 15 erally extending bossesof sufficient length to over,
said drawbar when‘rotated to one position, and
liethefianges ofsaiddrawbar,- and theflangesof .i
resilient. means urging said ‘lever to follow said.
said drawbar having a pluralityofspaced'notches,
thereinengageable, by saidbosses to, retain said
cam l deviceA4 so.. asY to- urge; said ,1 bosses intoj said
drawbar inv any of. aaplurality of_longitudinally
notches .when thecamdevice isrotated to..anothe_r
position.
'
'
`
.
"
‘
' 10.1"'` A4 drawbarlassemblyifor coupling a; trailing
vehicle .to .a_ leading. .vehiclejcomprising .Jal sleeve
haying_.a pair of..longitudinal flanges thereon,
20 adjusted positions, av shaft ,extending between> the. ,
flanges of;said.; sleeve,`. ai springsloaded.,plunger.'
extendingradially fromsaidshaft and contacting,-v
said> levers, mean's..to`A rotate. saidshaft. to raise;
said bosses `from_.thenotches in_thdflanges of .said
means, vfor .hingedly .supportingsaidisleeve jupona
vehicle with its longitudinal axis substantially 25 drawbar, and clamping means extending between
the ñanges of said sleeve for frictionally clamping
aligned with the longitudinal axis of the vehicle,
a drawbar slidably mounted in said sleeve and
the sides of said sleeve against the sides of said
having a pair of longitudinally extending flanges
drawbar.
13. A drawbar assembly for coupling a trailing
thereon, the ñanges and sides of said sleeve _and
of said drawbar being substantially contiguous, 30 vehicle to a leading vehicle comprising a sleeve
having a pair of longitudinal ñanges thereon,
a latch lever pivotally mounted between the
flanges of said sleeve and extending longitudinally
means for hingedly supporting said sleeve upon
a vehicle with its longitudinal axis substantially
between the ñanges of said drawbar, said lever
comprising a pair of laterally extending bosses
aligned with the longitudinal axis of the vehicle,
of suñicient length to overlie the ñanges of said 35 a drawbar slidably mounted in said sleeve and
having a pair of longitudinal flanges thereon, the
drawbar, and the flanges of said drawbar having
a plurality of spaced notches therein engageable
flanges of said sleeve and of said drawbar being
substantially contiguous, a pair of overlapping,
by said bosses to retain said drawbar in any of a
plurality of longitudinally adjusted positions, a
oppositely pointing latch levers pivotally mounted
cam device mounted upon said sleeve and con 40 between the flanges of said sleeve and extending
longitudinally between the flanges of said draw
tacting said lever, means to rotate said cam device
bar, each of said levers comprising a pair of lat
to raise said bosses from the notches in the flanges
erally extending bosses of sufficient length to
of said drawbar when rotated to one position, and
resilient means urging said lever to »follow said
overlie the flanges of said drawbar, and the
cam device so as to lower said bosses into‘said
i flanges of said drawbar having a plurality of
spaced notches therein engageable by said bosses
notches when the cam device is rotated to'an
other position, said resilient means comprising a
to retain said drawbar in any of a plurality of
longitudinally adjusted positions, a shaft extend
follower lever pivotally -mounted between the
ing between the flanges of said sleeve, a spring
flanges of said sleeve, and a spring extending be
50 loaded plunger extending radially from said shaft
tween said latch lever and said follower lever.
11. A drawbar assembly for coupling a trailing
and contacting said levers, means to rotate said
vehicle to a leading vehicle comprising a sleeve
shaft to raise said bosses from the notches in the
having a pair of longitudinal flanges thereon, ‘ flanges of said drawbar, and clamping means ex
tending between the flanges of said sleeve for
means for hingedly supporting said sleeve upon
a vehicle with its longitudinal axis substantially 55 frictionally clamping the sides of said sleeve
against the sides of said drawbar, said levers com
aligned with the longitudinal axis of the vehicle,
prising eccentric straps encircling said shaft and
a drawbar slidably mounted in said sleeve and
said plunger.
having a pair of longitudinal flanges thereon, the
14. A -drawbar assembly for coupling a trailing
flanges of said sleeve and of said drawbar being
substantially contiguous, a pair of overlapping, 60 vehicle to a leading vehicle comprising a pair of
elongated telescoping members, one of which is
oppositely pointing latch levers pivotally mounted ,
movable longitudinally relative to the other, and
between the flanges of said sleeve and extending
means to hold said telescoping members in any
longitudinally between the- flanges of said draw
of a plurality of longitudinally adjusted positions
bar, each of said levers comprising a pair of lat
erally extending bosses of sufficient length to over 65 with-respect to each other comprising a plurality
of longitudinally spaced abutments on one of
lie the flanges of said drawbar, and the flanges of
said members and abutment engaging means on
said drawbar having a plurality of spaced notches
the other o-f said members, said abutment engag
therein engageableY by said bosses to retain said
ing means comprising a pair of levers pivotally
drawbar in any of a plurality of longitudinally
adjusted positions, a shaft extending between the 70 mounted on axes transverse to the longitudinal
axes of said members and pointing toward each
flanges of said sleeve, a spring-loaded plunger
other, and a spring tensioned between said levers.
extending radially from said shaft and contact
. 15. A drawbar assembly for coupling a trailing
ing said levers, and means> to rotate said shaft
vehicle to a leading vehicle comprising a sleeve,
to raise said bosses from the notches in the ñanges
75 means for supporting said sleeve upon a vehicle
of said drawbar,
y
2,548,085
11
12
with the longitudinal axis of the vehicle, a draw
bar slidably mounted in said sleeve, and co-y
said sleeve and spanning said slot, said means
engaging the opposite sides of said sleeve and
said sleeve being resilient to an extent to permit
with its longitudinal axis substantially aligned
operating means on said sleeve and said .drawbar
to hold said drawbar in any of a plurality of longi
Y
said means to draw said sleeve into frictional
sleeve comprising a plurality of spaced notches
clamping engagement with said drawbar, a plu
rality of longitudinally spaced abutments on said
drawbar in alignment with said slot, and abut
on said sleeve, a pair of levers mounted on said
ment engaging means pivotally mounted on said
tudinally adjusted positions with respect to said
bar and having lugs engageable with said notches,
sleeve.
said levers being pivotally mounted in spaced 10
apart relation and pointing toward eachother,
DEWEY S. WEISS.
cam means mounted on said bar and engaging
REFERENCES CITED
the free ends of said levers to raise said lugs from
The following references are of record in the
said notches when rotated to one position, and
ñle of this‘ patent:
resilient means urging said levers to follow said
UNITED STATES PATENTS
cam means when rotated to another position such
that said lugs may drop into said notches.
Number
Name
Date
16. A drawbar assembly for coupling a trailing
1,085,038
Hall et al _________ __ Jan. 20, 1914
vehicle to a leadingA vehicle comprising a sleeve
1,333,846
Hensal _________ -_'_ Mar. 16, 1920
having a longitudinal slot in its surface, a draw 20 1,802,257
Imhofe et al ______ __ Apr. 21, 1931
bar slidably mounted in said sleeve, said drawbar
having longitudinal portions of its external sur
face contiguous to the internal surface of said
sleeve, threaded tightening means mounted on
1,923,904
Allen et al. ...... __ Aug. 22, 1933
2,174,063
2,327,308
2,366,294
Richards _______ __ Sept. 26, 1939
Johnston ________ __ Aug. 17, 1943
Stringer __________ __ Jan. 2, 1945
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