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Патент USA US3025547

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March 20, 1962
v. RASMUSSEN
3,025,537
PONTOON BOAT STRUCTURE
Filed July 26, 1960
4 Sheets-Sheet 1
Q
'\
INVENTOR
Mai-a RAsMuss-s”
BY
i 5
March 20, 1962
v. RASMUSSEN
3,025,53 7
PONTOON BOAT STRUCTURE
Filed July 26, 1960
4- Sheets-She-et 2
Z1:.
.1rIh:_ _
INVENTOR.
W660 lP?sMass?zv
BY
Armani/s .s
March 20, 1962
v. RASMUSSEN
3,025,515 7
PONTOON BOAT STRUCTURE.‘
Filed July 26, 1960
4 Sheets—She-et 3
INVENTOR.
W660 knsnusser/
Jrrwewerg
llited States Patent Oilice
3,d25,537
Patented Mar. 2%), 19.362
3
2
3,d25,537
‘Jiggo ‘Rasmussen, % Viggo (Ionstruction (1a.,
like reference characters refer to similar parts throughout
the several views and in which:
FIG. 1 is a view of applicant’s device .in side elevation
2316 E. 25th St, Minneapoiis, Minn.
Filed Study 26, 196i), Ser. No. 45AM}
'7 Qlaims. (ill. 9-i)
FIG. 2 is a top plan view of applicant’s device with
some portions thereof shown in alternate position in
PGN’E‘IBQN soar STRUCTURE
in ?oating position;
dotted line;
This invention relates to a novel construction of a pon
toon boat. Particular reference is had to such a boat
FIG. 3 is a bottom plan view of applicant’s device with
a portion thereof broken away and a portion thereof
structure as may be readily pulled out of a body of water
and moved over land on its own support, such as by being
towed by an automotive vehicle. Such boat structures
shown in alternate position in dotted line;
generally have too great a width to be suitably moved
in road traveling condition;
FIG. 4 is a view of applicant’s device in end elevation;
FIG. 5 is a view of applicant’s device in side elevation
over a road. For the purpose of being carried or towed
FIG. 6 is a view in horizontal section taken on line
as over a road, such boat structures must generally be 15 6———6 of FIG. 5 as indicated by the arrows;
partially dismantled and some have portions hinged to be
placed in a doubled over position to reduce the width of
the boat structure. It is desirable to have a pontoon
FIG. 7 is a broken away portion of applicant’s device
in perspective showing a detail of construction thereof on
an enlarged scale;
boat structure which is easily and simply made ready for
FIG. 8 is a view in end elevation similar to the view
20 shown in FIG. 4 with applicant’s device in road traveling
movement over a road.
It is an object of this invention therefore to provide
condition;
a pontoon boat structure constructed and arranged to be
FIG. 9 is a fragmentary view in vertical section on an
readily reduced in width to a desirable road traveling
enlarged scale taken on line 9——9 of FIG. 3 as indicated
width by the action of being drawn out from a body
by the arrows;
of water.
It is a further object of this invention to provide a
FIG. 10 is a fargmentary view on an enlarged scale
in vertical section of a portion of the rail structure of
wheel equipped pontoon boat structure with the wheels
thereof being automatically positioned to a boat support
ing position when said boat structure is reduced to a
applicant’s device; and
road traveling width and which are positioned in an out 30
of the water position'when said boat structure is a?oat.
It is also an object of this invention to provide a pon
toon boat structure comprised of a pair of hinged portions
forming the platform thereof, a tow bar extending cen
trally longitudinally of said structure spaced beneath the
platform thereof, and a plurality of aligned longitudinally
spaced transversely extending tie rods pivoted at their
FIG. 11 is a view similar to that shown in FIG. 10
with the structure in an alternate position.
Referring to the drawings, a pontoon boat structure It)‘
is shown which in the embodiment of the invention here
presented comprises a platform 12 substantially rectangu
lar in plan and made up of sections 14 and 15 having ad~
jacent edge portions 16 and 17 extending centrally longi
tudinally of said platform. Said sections respectively have
rear end portions 18 and 19, outer sides 20 and 21, and
forward end portions 22 and 23. Said platform will be
formed of suitable material.
outer ends to side portions of said platform and pivoted
at their inner ends to said tow bar, whereby a forward
Extending transversely of the under side of said plat
pull on said tow bar while the boat structure is a?oat 40 form and more speci?cally of each of the sections thereof
causes said tie rods to ‘be angled forwardly to reduce the
and spaced longitudinally thereof are reinforcing ribs 25
width of said boat structure to a desirable width for road
here indicated as being formed of channel members sub
travel whereby said boat structure on being withdrawn
stantially U-shaped in vertical section. Said ribs will be
from a body of water is automatically positioned in a road
secured
to said platform in a suitable manner.
45
traveling condition.
It is a more speci?c object of this invention to provide
a pontoon boat structure having a pontoon supported plat
Overlying and capping the adjacent sides 16 and 17
and being suitably secured thereto are U-shaped beams or
frame members 27 and 28 in back to back position hav
form comprised of portions being hinged centrally longi
ing their respective ?ange portions overlying the adjacent
tudinally thereof, a tow bar extending centrally longi~
tudinally of said platform and being spaced therebelow,
a plurality of longitudinally spaced transversely extending
surface portions of said sections 16 and 17. Secured to
the bottom ?anegs 27a and 28a of said beams 27 and 28,
as by welding, is a piano type hinge 29 extending the full
tie rods pivotally secured at their outer ends to adjacent
portions of said platform and pivoted at their inner ends
to said tow bar whereby said rods support said tow bar,
a pair of wheels mounted adjacent either side of said plat
form adjacent the rear portion thereof, said wheels being
length of said beams and pivotally or hingedly connecting
positioned at an angle to be in an out of the water posi
tion when said platform is in a ?at condition, as when
ing, to said brackets 32 at either side of said platform 12
to support said platform in water are substantially cylin
drical pontoons 34. The end portions of said pontoons
a?oat, and to be vertically disposed to provide ground
the same and said sections 16 and 17.
Depending from the outer end portions of said ribs 25
and secured thereto, as by nutted bolts 33, are inverted
U-shaped brackets 32. Respectively secured, as by weld
are shown to be conical in form and to extend somewhat
support for said boat structure when said platform is
angled upwardly to be narrowed in width, said tie rods
pulling the sides of said structure inwardly toward one
FIGS. 1-3.
from a body of water, and means for adjustably holding
said platform in said angled position when said structure
neath and shown here to be in vertical alignment with said
beams ‘27 and 28 is a U-shaped channel member forming
beyond the ends of said platform 12, as indicated in
Extending centrally longitudinally of said platform
another angling said platform upwardly when said tow
bar is pulled forwardly in withdrawing said boat structure 65 substantially coextensive therewith and spaced therebe
is being moved over land.
These and other objects and advantages of the invention
will be fully set forth in the following description made
in connection with the accompanying drawings in which
a tow bar 38. At the forward end portion of said tow
bar and disposable therein is an inverted U-shaped ex
tendable portion 39 with a plurality of transversely
aligned longitudinally spaced apertures 38a and 39a ref),
spectively through said bar 38 and portion 39 to have
3,025,557
disposed therethrough bolts 40 for securing said extend
able portion in certain different positions longitudinally
4
Said
and cotter
overlapping
key 97,mating
to formportions
a joint are
98. pivoted
Said portion
by a 95
is of solid construction having a lower end portion tapped
for receiving a headed bolt 1% therein, said bolt extend;
of said bar 38. Secured to the free end of said extend
able portion is a hitch 41 of a common variety and adapt
ed to be secured to any desired towing means.
ing upwardly through said apertured plate 59 and acting
as a limiting member. Thus when said railing is in up-f
Referring to FIGS. 4, 6, 8 and 9, disposed transversely
right position, said joint 98 is wholly received within said
socket 85 for rigid upright support for said railing. Said
are a plurality of pairs of rod-like tie members or tie
railing is easily raised to withdraw said joint 98 from‘
rods forming links 42. Said links have their outer or
remote ends secured to said ribs 25 by being secured 10 within said socket whereby said railing may be pivoted
downwardly in a ?at platform resting position, as indicate
thereto by ball and swivel joints 44.
of said platform 12 and longitudinally of said ribs 25
Said ball and swivel joint '44 is of a commonly used
type comprising an angle portion 45 having a ball swiveled
ed in FIGS. 8 and 11.
p
The operation of applicant’s device will commence with
it being in a ?oating position. The platform 12 will be
in a retainer 47 threaded onto a short stud 48 secured to
rib 25 by a nut 49. The leg of said angle portion 45 is 15 in a ?at horizontal position carried on the Water support-s
ed pontoons 34.. The wheel structures 66 and 63., as in;
disposed in an elongated nut-like retainer 50 tapped at its
dicated particularly in FIG. 9, will be angled obliquely ‘to
inner end for threaded engagement with the adjacent end
the ground level in an out of the water position.’ The
of said link 42 for vertical movement relative to said
railings on the platform will be in upright position. What--v
angle portion 45.
At the other or inner end of said links 25 are ball and 20 ever means of propelling power is desired may be attached
to the transom 70.
swivel joints 53, similar to said joints 44 and requiring
The principal problems involved in handling a pontoon
no separate description. Thus it is seen that said links
boat structure lies in removing the same from a body
25 pivotally support or carry said tow bar 38.
of water for transport over land. Generally house boats
Mounted at either end of said platform 12 and secured
to the endwise ribs 25 thereof are locking bars 54 and 55 25 are of a much greater width than would be permitted
for an object being carried over a road. Applicant has
respectively having intermediate portions formed of turn
a very novel and simple construction permitting a sub
buckles 54a and 55a with said bars having eyelet formed
stantial reduction in the width of his boat structure with
ends engaging hooks 58 for holding said platform in a
but very little effort on the part of the operator. While
narrowed width position as shown in FIGS. 5, 6 and 8.
in ?oating position the tow bar 38 by means of a hitch
Carried at either side platform 12 adjacent the rear
41 will be secured to the automotive vehicle to be used
end thereof are Wheels 6% and 61 positioned to be at an
for transporting the same over a road, as by towing.
angle oblique to ground level, as indicated in FIG. 9,
As the tow bar 38 is pulled forwardly, the links 42 will
and so angled as to be vertically disposed in a ground
be angled forwardly, as indicated in FIG. 9, and will thus
supported position when said platform is in a narrowed
35
wheels may be variously formed and mounted in operat
draw the outer sides of applicant’s boat structure in a di
rection toward one another to retract or reduce the width
ing position and are here shown comprising pneumatic
of the platform .12. This is easily accomplished with the
road traveling condition as indicated in FIG. 8.
Said
tires 62 and 63 mounted on stub shafts 64 and 65, with
structure being in a ?oating position. By the time that
said shafts being journaled in bearing housings 66 and
40 the wheeled portion of the boat structure emerges from
67 which may be secured to said platform 12 in various
suitable ways known in the art.
the water, the structure will have been reduced to a desir
able width and the wheel structures 60 and 61, as indicat
ed in FIG. 8, will have moved into planes vertical to the
ground level, whereby the boat structure will emerge or
be withdrawn up onto land on said wheels 60 and 61.
thereon a suitable propelling means not shown here and 45 The locking rods 54 and 55 will be placed in locking
position to hold the sections of the platform in an angled
which may take the form of an outboard motor.
position, as shown in FIG. 8. Applicant in one embodi
Upstanding from the upper surface of said platform 12
ment of his invention reduces the width of his boat struc
are a plurality of railings here shown comprising end
Projecting rearwardly of said platform 12 and secured
to the adjacent ribs of said sections 14 and 15 is a split
transom 70 of known construction for having mounted
ture from a width of eight feet to one of 5 6 inches. The
railings 75, 76, 77 and 78, and side railings 79, 80, 81
and 82. Said railings will be of suitable height and of 50 reduction in width will be somewhat dependent on the
diameter of the pontoons used, as is also indicated in
lengths to be positioned as indicated in FIG. 2. Said rail~
ing 75 will be described in detail, and except for the
FIG. 8.
lengths of the side railings, the other railings are of iden
Prior to the withdrawal of the boat structure from a
?oating
position, the railings on the platform will simply
tical construction.
55
Said railing 75 is substantially of an inverted U shape
be raised partially outwardly of the sockets 85 and piv
in form made of tubular pipe stock and is adjustably
oted inwardly to lie in a substantially flat condition on
anchored to said platform for either an upright or a down
said platform. These may be locked in such position by
wardly pivoted position. Referring to FIGS. 10 and 11,
suitable means. It is seen that the applicant through the
supporting said railing 75 at each lower end thereof is an
use of the bolts 1% in connection with the sockets 85
upstanding cylindrical socket 85 having a base ?ange 86
provides a very simple and effective limiting means on
secured to said platform 12 by bolts 87. Said socket is
the extent to which the railings may be withdrawn from
of a size to receive the bottom leg portion of said railing
said sockets.
therein. Inserted in the base of said socket and having
its peripheral portion received in an undercut portion 88 65 Thus it is seen that applicant has provided a very
simple and effective means requiring but very little effort
‘of said socket so ‘as to be securely held against the sur
on the part of the operator to place his pontoon boat
face of said platform is a centrally apertured plate 89. A
structure in a road traveling condition.
well or chamber 90 is formed in said platform beneath
It will of course be understood that various changes
said plate member.
The bottom portions of the legs of said railing 75 are 70 may be made in the form, details, arrangement and pro
portions of the parts, without departing from the scope
pivotal and comprise a portion 91. having a portion of re
duced dimension extending upwardly into said railing 75
of applicant’s invention, which, generally stated, consists
in a structure capable of carrying out the objects above
and being secured thereon by a bolt 92. Said portion has
set forth, in the parts and combinations of parts dis
a ?attened depending portion 93 mating with a similar
portion 94 of a leg portion 95 disposed in said socket 85. 75 closed and de?ned in the appended claims.
5
3,025,537
What is claimed is:
1. A pontoon boat structure having in combination, a
substantially rectangular platform, said platform com~
prising sections hingedly connected centrally longitudi
nally thereof, a pair of pontoons at the underside of said
platform respectively adjacent either outer side thereof,
an elongated bar member extending centrally longitudi
nally of said platform and spaced therebelow, a plurality
of pairs of tie rods aligned in opposed relation trans
6
a vertical ground supported position when said boat
structure is in a road traveling condition, and a pair of
pontoons secured to the underside of said platform at
‘opposite sides thereof for supporting said boat structure
in water with said pontoons being substantially parallel
to said tow bar whereby a forward pull on said tow bar
in withdrawing said boat structure from, a body of water
in connection with said tie rods angles said sections up
wardly along their hinged connection to reduce the width
versely of said platform therebelow and spaced longi 10 of said boat structure.
tudinally thereof having their remote ends respectively
4. A pontoon boat structure having in combination,
pivoted to portions of "said platform and having their
a platform comprising a pair of sections, means hingedly
adjacent ends respectively pivoted to said bar member,
connecting said sections centrally of said platform, a tow
and a pair of wheels respectively mounted at either side
bar extending centrally of said platform therebelow,
of said platform adjacent the rearward portion thereof 15 means pivotally connecting said tow bar to said platform
independent of said pontoons and disposed to be respec
to adjacent either side edge portion of said platform,
tively at angles oblique to the ground level when said
and a pontoon carried by said platform adjacent either
platform is in ?at ?oating condition whereby in ground
side edge portion thereof at either side of said tow bar
supported position said sections are angularly raised by
longitudinal movement of said bar member to raise said
pontoons above ground level and to lower said wheels
to a vertical ground supported position.
2. A pontoon boat structure having in combination,
a platform, said platform comprising sections hingedly
whereby a forward pull on said tow bar in withdrawing
said boat structure from a body of water automatically
angles the central hinged portion of said platform up
wardly drawing the side edge portions thereof toward
one another to narrow the width of said platform.
5. The structure set forth in claim 4, and means for
connected longitudinally thereof, a tow bar extending 25 \adjustably locking said platform in said narrowed posi
longitudinally of said platform substantially vertically
aligned with said hinged connection and spaced there
below, a plurality of pairs of tie rods in opposed relation
tion.
>
6. A pontoon boat structure having in combination, a
platform comprising a pair of sections, means for
aligned transversely of said platform and spaced longi~
hingedly connecting said sections centrally of said plat
tudinally thereof having their outer ends pivoted to said 30 form, means pivotally connecting transversely spaced por
platform and their inner ends respectively pivoted to said
tions of said platform for angularly raising the central
tow bar, a pair of wheels respectively mounted inde
pendent of said pontoons at either side of said platform
adjacent the rearward portion thereof, said wheels being
positioned to be automatically at angles oblique to the
ground level when said boat structure is ‘afloat and to
portion of said platform to move the outer side portions
thereof in a direction toward one another to narrow the
width of said platform, and a pair of pontoons carried
by said platform at the side edge portions thereof for
supporting said platform in a body of water whereby
be in a vertical ground supported position when said boat
said second mentioned means responsive to a forward
structure is in condition for road travel whereby said
pull thereof automatically reduces the width of said
wheels are moved from oblique to vertical position or the
platform.
reverse by the longitudinal movement of said bar mem 40
7. A pontoon boat structure having in combination,
ber in angularly raising said platform sections or lowering
a platform comprising a pair of sections, said sections
them to a ?at horizontal position.
being connected centrally longitudinally thereof, means
3. A pontoon boat structure having in combination,
for holding said sections in a connected relationship re
a platform comprising a pair of sections, means for
sponsive to a forward pull thereof for automatically re
hingedly connecting said sections centrally of said plat 45 ducing the width of said platform, a pair of wheels
form, a tow bar extending centrally of said platform
mounted on said platform being automatically angled
therebelow, a plurality of links at either side of said tow
to 1a ground supported position when said platform is
bar extending transversely of said platform and spaced
reduced in width, and means for holding said platform
longitudinally thereof, the outer ends of said links being
in condition having a reduced width for road travel.
pivoted to outer portions of said platform, the inner ends
of said links being pivoted to said tow bar, a pair of
References Cited in the ?le of this patent
wheels respectively mounted at either side of said plat
UNITED STATES PATENTS
form, means for automatically holding said wheels at
907,629
Murphy ____________ __ Dec. 22, 1908
angles oblique to the ground level to be in an out of the
Cook ________________ __ Oct. 12, 1926
water position when said boat structure is a?oat and in 55 1,602,812
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