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Патент USA US2406085

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Aug. 20‘, 1946. '
Filed May .19, 71944
2 sheetsjsheei 1
FIG. IO 44¢ 46d
Mm‘ .
Aug. 20, 1946.
E. A. LINK v
Filed May 19, “1944
2 Sheets-Sheet '2
Patented Aug. 20, 1946 p‘ I
EdwinlA. Link, Binghamton, N; Y4
Application May 19, 1944; ‘Serial No. 536,293“
5 Claims.
(Ch 9-7-2.)
This invention relates to a sectional boat,
canoe or the like. of {the type wherein the main
.of the hullnasiwellisaslithe ‘thwart in properlfposi
sections of the devicemay be‘ readily taken apart
‘Fig. 6 is a vi'ew‘ofione' form of; the gasket-which
may'be used'topmduce a watertight seal’.
and after being so taken apart may, when de
sired, be readily..assembleds'iniits usable state,
suitable clamps. beingrprovi'ded toshold ‘the various
- Fig. '7? shows . the relative; arrangementsv off ‘the
various - gaskets ~lwhen~ a -..plurality' of inflatable
parts of. the structure in'th‘eir proper relative
positions. ‘The prime purpose‘ of providing such
a deviceuis. torender (it when‘ disassembled, more
gasket are'used..-
> Fig-8 is'a perspective‘ view of a section 'offthe
device showing‘ the. receiving/means for. the‘ gas‘
easilyrh-andled and'transportedto' and from‘ the 10 ket.
point of use.
Figs.‘9, 10,:10A; 1i ‘and: I2iillustrate'a novelifrib
‘However; this type 1 otboat or"v canoe has ‘not
construction whichi'ormsl a part of’my'iinven
vbecome ‘widespreadrimuse'hitherto because no
‘completely satisfactory‘ means ofrendering the
adjacent. sectionswwatertight, ‘when assembled,
‘have been-known to the<prior art;
in' Fig. 1 but it should. beiib'orne‘ in mind that it
It is a ‘principalobject of myinyenti'on to pro
vide novel means for forming. a. watertight seal
between the various. sections of. the‘ hull of the
'device when the sections are assembled to form»
‘azus-able device.
‘My invention will :b'eiil'lustrated‘ywhen incor
porated in a'sectionall' canoef'of theftypei‘shown
may be used in'othertypesr'of water-going craft.
In thatt?gure the longitudinal center line ofthe
canoe is designated? l;0,-‘the center linelof course
->dividing vthe device equally. .Transvers'ei of i the
center 'li‘neiare thewlinesrli, lidzandi I'Gwhi'ch ex.-v
tend from the portgun-wale-liito' the starboard
More particularly, it ‘is an ~obj'ect'of my- in
fvention to provid'ean in?atable gasket which
~gunwal'e H of . the ‘canoe.
‘may be placed betweenxithe abutting surfaces of
The longitudinal 'center‘line l0 and'transverse
vthe sections of- the‘ devicesin‘sorderthata water- 1 25 lines 12', 14A and I6‘ di'videthe canoe-‘into eight
tight seal maybe':'obtained'.;.v
major sections designated’ generally 18,- 20, .22,
It is a furtherobject-of thisinventio-n to pro
vide a plurality of in?atable?gaskets‘which may
‘24, 26", 28., 3llrand'32, and. the canoe is preferably
builtiso that each?oflthese. eight sections may be
'deta'chedifrom‘ the'n'eighboring sections or‘ at
.be' placed between. the‘ abutting-surfaces of the
:sections of the device in ordercto secure awa-ter
tight seal.
Another aim of my invention'yis- toxprovide
novel clamping means for holding the parts ‘of
the device together when ‘inzassembl'edxform'.
Still another object of theinven-tion is to pro
=vide a novel rib construction‘ whereby thev-arious
sections of the canoe may be made v?at when
Other objects of this invention‘ will become
‘apparent as the description proceeds‘, reference 5
now- being made to the accompanying ?gures
which; show a preferred‘embodimentof the in
In the ?gures,
Fig; 1 is a plan view of the .deviceishown in
‘:assembled condition.
Fig. 2 is an elevation of'the canoe, certainparts \
“being cut awayfor. the purpose of ‘illustration.
Fig. ,3 is-a view partly in crosssection taken
_ along the line III--III of' Fig. 1, showing invde
tail one type: ofrthe-preferred clamping means. I
Fi-g.;_42is- a detailed view~of anotherr'of the
‘.forms- of clamping means-w-hichJmay-be used
with my invention
‘ Fig. .5. is a detailed view I of: anothergmeansz used
“in: my invention ‘for ‘ holdings-the :main: sections ., I
so tached to the. neighboringuse'ctions, as the case
may be.
When detached?the vvarious sections
mayv be. “nested” inthe. usual manner.
The'fore and aft decks are. designated 34’ and
>36' and they'may be‘deta'ch'ably connected to the
associated stemand ‘sternxh'ull‘ sections in any .
’A forward seat 38 and‘ a rearward seat 40“ are
also provided :as is a‘ central‘ thwart 12.- The
' seats‘ may be“ detachably: connected? to‘ ' the ‘hull
sections in any suitablemanner and the thwart
is detachablyi connected‘ to the hull sections in a
'manner which will‘behereinafter disclosed.
Each: of the hull sections has a plurality ‘of
rigid .ribs'llll which extendftransversely' ofl'the
.canoe and are'suitably curved. tosproperly shape
the canoe. Suitable ‘outside. covering material‘ 46
is attached to the ribs, and this covering» mate
"rial may be ofany suitable‘ type such'as canvas,
plywood orplastic material‘.
Still referring to. Fig: 1, it will" be ‘seen - that
‘each of the *mainzeight. section's'of‘the canoe-‘has
=“a longitudii'ial keel piece-‘l8? or>'49;’the numbers
"48 designating thekeel" pieces‘. of- the‘ fdunst'ar
board sections 18, 22;:26iandx3?i’andithe: num
sbers-vi?i designating. .theakeelxpieces: of the ‘four
is held by cam hinge bracket 86 and cam 98
port sections 20, 24, 28 and 32'. The keel piece
main eight sections has a rib 43 at its extreme
end or ends which abut another section of the
device. It will be seen in Fig. 1 that a plurality
of clamps 50 extending transversely on the in
side bottom of the canoe are provided to hold
the sections of the canoe tightlyagainst the
transversely opposite sections. Also, a, plurality
?ange I02 integralwith bracket 94.‘ Arm I04 is
integral with cam 98.
When arm I04 is turned
180° from the position shown in Fig. 4, cam 98
becomes disengaged from stud 90 and it will be
I} realized that bracket 94 may be moved to the
vertical position whereupon keel members 48 and
49 may be separated.
Similarly, with arm I04 inv '
10 that position, it will be realized that when keel
of the same types of clamps 50 are provided to
hold the various sections tightly against the lon- . < ,
gitudinally adjacent sections.
rotatably mounted bylmeans of stud I00 held by
of each section abuts the keel piece of the trans
versely adjacent section. Further; each of the
Referring now to Fig. '2, it will be seen that '
certain of these clamps 50 are provided along the .
inside of the canoe near the gunwales I5 and I1
. to hold the adjacent longitudinal sections to
gether. Also, there is ‘shown in Fig. 2 at the
stem a second type of clamp 54, three in number,»
which are used to ‘hold the adjoining transverse
sections of the canoe in proper relative positions.
Similarly, three of these same type of clamps 54,
although not shown, are correspondingly placed
in the_ stern of the canoe for the same purpose.
‘Reference is now made to Fig. 3 which shows ‘
inv detail the previously-mentioned clamps 50.
member 48' is placed adjacent member 49, bracket ‘
94 may be moved to the position shown in Fig. 4
and ‘the movement of arm I04 through 180‘! to
the position shown in Fig. 4 pulls keel members
'48 and 49 together thus providing a tight ?t.
This ‘type of clamp designated 54 is used in the ;
~_stem and stem of the device because at those
positions lack of space prohibits the use of the
type of clamp designated 50 and disclosedin def
tail in Fig. 3.
Fig.5 discloses the detailed means of aflixing
‘the thwart 42 to the main hull sections of the
canoe and at the same time providing a clamp
for holding the longitudinally adjoining sections
22 and 25, on the one hand,.and 24 and 28 on the
other, in proper relative position.
Shown in Fig. 3 is the watertight covering mate
As seen in Fig. '5,=the' gunwale I5 of each sec
blocks 56 and 58. Block 56 is rigidly af?xed to
section 24. Ribs 43 and 44 are ?xedly held there
between by means of screws 45. Plate H0 is‘ rig
idly a?ixed to inner gunwale I08 of section. 28 by ,
means of screws H2 and stud vI I4 is-?xedly'at
'.tion 24 and 28 is shown to ‘comprise ‘an outer
, rial 46. and the ribs 44 to which the covering
member I06 or I06’ and an inner member. I08 or
material is attached. ' Rigidly ‘attached to the
upper surface of the ribs 44 are a pair of ?ller 30 I08’, the latter numbers designating the part of
starboard keel, 48 in a suitable manner and the
keel 48_ is also rigidly af?xed to the starboard rib
44. r At thesame time, the port keel 49 is rigidly
affixed to .?ller block 58 and to the port rib 44.
'A stud plate 60 having a stud 62 rigidly attached
thereto-is affixed upon ?ller block 56 by means
of screws 64 and clasp plate 66 is rigidly a?ix‘ed
tached to plate IIO._ A second plateul I0’ is rig
idly a?ixed by means‘ of screws “2' to the inner
'gunwale member I08’ of section 24. Stud H4’
is rigidly a?ixed to plate “0'.
Angle bracket II6'is provided and thwart 42 is
10- is rigidly aflixed to plate 65 in a suitable man 40 rigidly a?ixed to angle bracket I I6 by ’means' of
screws II8 while thwart clamp I20 is pivotally
ner'and pivot ‘I2 is provided so that the clasp
mounted with respect to angle ‘bracket II6' by
‘lever ‘I4 may pivot therearound. 'Clasp ‘I6 is piv
means of stud I22 which is rigidly af?xed to angle
otally connected to clasp lever 14' and may en
bracket II6. A pair of ‘clearance holes (not
circle stud 62 as shown, stud 62 being grooved
for receiving cIasp'IGU When clasp lever "is 45 shown) are provided in angle bracket I I6 to allow
the passage therethrough' of grooved: studs H4
raised clasp ‘I6 may be disengaged from stud 62,
and H4’ and a 'pair of curved slots l24arelpro
and when clasp lever ‘I4 is depressed with clasp
vided in clamp I20.
‘I6 encircling stud 62,eas shown’in Fig. 3, it will
With the just described construction it will-be
be understood that keel section 48 will be drawn
50 appreciated that when thwart 42 is detached 'from'
tightly against the keel section '49.
r 2
the sections 24 and 28 it may be properly posi
Still referring to Fig. 3, there is disclosed the
V to ?ller block 58 by means of screws 68.
outside keel clamp ‘I8 having a hooked end ‘80
adapted to engage the lip 82 of the keel plate
.84. Keel plate ‘I8 is rigidly a?‘ixed by screws (not
shown) to the section 22 of the canoe to the right
of longitudinal center line I0 while keel plate 84
issimilarly attached to the section 24 of the
canoe, on the other side of the center line.
interlocking keel plates notonly provide a rugged
tioned with respect to sections 24 and 28 by hav
ing clamp I20 clockwise 90° from the position
shown in Fig. 5, this positioningof clamp I20
being possible by virtue of the clearance I26 be
tween the end of thwart 42 and. the vertical com
ponent of angle bracket H6. Then, by position
ing studs IM and H4’ with respect to angle
bracket I I6 as shown in Fig, 5, the counterclock
keel for the‘ canoe but when interlocked, as shown 60 wise rotation of clamp I20 to'the position shown
in Fig. '3, before the tightening of the clasp 50
the keel plates assure a better ?tting between the
transversely opposite members of the canoe.
Keel plates'I8 and 84 extend substantially the
in Fig. 5 not only draws the longitudinallyv ad
joining sections 24 and 28 together so that they
closely abut along the line ’I4,'but at thesame
time, inasmuch as an arrangement like "that
entire length of ‘the canoe and are sectioned in 65 shown in Fig. 5 is provided at the port end of
accordance with the transverse'divisions of the
Reference. is now made to Fig.4 which shows
the type of clamp previously mentioned and des
thwart 42and. where sections .22iand'26 adjoin,
thwart 42 is positioned by the just'describ‘ed‘ar
rangement to hold the starboard‘ andTport gun
wales in their proper~ relative positions; ' ‘Also,
.fignated in Fig. ; 2' by 54. As seen, cam hinge 70 sections‘ 22and 26 are pulled together.‘
> Reference is now made to Fig. 6 which-shows
bracket 86 is rigidly ‘a?ixed to starboard keel sec
one form of in?atable gasket preferably made" of
tion 48 by means of screws 88 and the stud 90 is
integral with angle 92 which is suitably rigidly
amxed to port keel section 49. Cam support
bracket 94 is pivotally mounted upon pin 95 which
rubber whichmay be used to seal in a vwater
tight fashion the abutting surfaces of the eight
main sections of the hull‘ when they. are ‘assem
blediztoaiormza usabledevicer. *Asshown; théfgasket
the ; canoe :from; stem; to .stern’, placingntheilarge
groove'in; the rear. ribrof‘section l8fisv1preferab1e
hascari long 1: central £;:m'emb:er; l 28;. approximately
equal inclength ..:to=r theacombinedrlengths of :the
to having§thei.rforward~ rib-of section. 2.2.» It
therefore iSiCIQERTthHIt whenzthe off-center grooves
for receiyingither gasket are. provided, it is'prefer
vable to havethe .ilargerigroove's in the samerikeel
sectionabtall .of. the parts. and in the rib/at. the
end of :the section: toward ithe.unassembled .end
keel: sections. . .TlII‘BE‘itIiQJISVGI'SE "?n‘?atable'mem
berst'. I;3.0 ,1';I;32;-.:and.. I 3:‘1vv ;are;iintegraliy "connected
.witlr-central‘member .I 28 so thattheentirelength
v of member: I 28Las.:-well:as:.of;,the threectransverse
membersrmayzbe in?ated .by :connectingaalsuitable
pumpwto the valve-J 36.1 The: in?ation, » of course,
of. the canoe.
expands all of the parts of the gasket. The trans .10
As also seen in Fig. 3 one of the keel‘ sections
verse ‘.members. are spacedinzaccordance with the
maybe provided witha tongue. :I4Zadapte‘dto ?t
lengths-10f the mainsections *of.‘ the tcanQe; : :Ref
.into a groove "I43 ‘in: the. other,..this arrangement
erence is now ;made' ~ to‘; Fig.2. 8;‘Whl'0h' is». a- perspec
further facilitating the ?ttingtogether and'hold
tive .view of‘, a part of .ithessection. 24 of. the canoe.
in'proper position. ofithe keel sections.
It-wiI-l,»beiseenqthatrkeersection '49 has/a; longitu ~15 ingReference
is nowmade to Fig; 7 which shows
dinal groove: .I 38. in: the: middle. of the ,inner wall
another form of. .jgasket. comprising" independent
sections [445146, I4B;and‘ l'?lireach‘lhaving a valve
l?2icorresponding to valve I35. seen in?Fig, '6.
curvesinaccordance:‘with:thexshape of ribi~43..- It
With these. independent gaskets, gasketnl 44 may
should; be noticed; that. this-ri-b43: is thicker than .20 be permanentlyinserted in thelg'rooves whichare
‘the: ribs 44-»which-are1not adjacent the ends of
provided :zinsecti‘oniv I8; gasket 1.46 in‘ the grooves
thereof. Furthermore, the rib 43 along t'heurear
‘most end? of. section; .24 has agroove .140 "which
thewsections.v vThev port; and.:star.board keel = sec
tions of. all‘ of theaother. main- parts of the canoe
arev grooved like theillustrated section: as vare -.all
of therendwribs ‘ 43 of» the {parts ‘which. abut corre
in. section 24,.gasket M8 inthe grooves in section
26 and gasketil‘50in: the grooves in sectionw32,
Theigrc-oves. in.‘ each of. the sections which :holds
the corresponding gasket are preferably offlthe
spondingribs 43 ofrlon‘gitudinally adjacent parts.
oif-center'type disclosed-in Fig.3 and described
above, iso..that they mayxpermariently holdnthe
gasket: therein. 'Theabuttingasurfaces of thesec
All. of the end ribs; compare :in thicknesslwith the
ends'rib illustratedin. Figs-8. With this arrange
ment, rthereforaethe vtree shaped ggasketshown in
tions not'holding thegaskets may be ?at, as shown
Fig; 6; maybe ?t ‘into: the; grooves ofthevarious.
inFi‘g. 4, or grooved, asseeniniFig. 3.
sections of: the-canoe as .they are \ assembled, vand
the previously described. clampingmeans not. only
securely r'holdi :the, 'various :‘sections in .place H but
valve vI 36,:the lpositionr'oiwhich isvrshown in ‘Fig.2,
the-.Jgasket; :may be. inflated and'ithe air.v pressure
Within the gasket. will causeits .~exterior surface
‘to zpress.tightlyagainstthe insides of the channels
fonnedbylrthe previously described‘ grooves.
rl‘he > -
pressure of the gasket. seals the abutting. surfaces
ofthe sections of. the: hull. and keel inv a--Water
Thezgrooves \inathei keel‘ sectionsv 48-. and 49 may
part'of' one of thegaskets is between. alliofthe
also’ securely ‘position. the tree shaped gasket.
When-?nallyaasserrrbled,;-by.attaching a pump-to ,
Whenth'ese ‘independent gaskets are us-e'd;:they
are‘preferablyarranged asseenin Fig.7 so thata
longitudinal. andtransverse abutting surfaces . of
the main‘ canoe sections. ‘Also, ‘at the points
designated‘ I35Il in Fig, '7, the'seal will‘ be produced
by the gaskets pressing againstone another. "The
use ‘of . several ind'ependent..gaskets preferably
permanently held inirelation to the various canoe
secti‘ons‘further facilitates assembling the device
and has the-added advantage that when disassem
bled the gaskets. dovnot require separate care.
‘Reference isnow made to Figs. 9 and ‘10 which
disclose a. novel vrib construction which may ‘be
vused tofgr'eat advantage- in sectional canoes in
bel'Of’ equalisize, but preferably; as showninEig; 3, ‘
thegroove I38~inrone of the keel sections .may
be-larger than the-groove .intheother keel sec
.tion. The.v same. oif-center arrangement: may ‘be
order that‘; when‘ disassembled, the various main
sections may bet?-attened so‘ that theymayrbe
used'insofar asthe ribs are/concerned; . Itshould
be :notedv that. when this. o?-center arrangement '
-.As seen iniFigsBand 10‘ the ribs 744a comprise
is. used the. larger - groove has- a i . circumference
greater than. half the circumference vof the gasket,
and, the opening 10f. thesgrooveis, less. in width
than the. diameter ofpthe. gasket. This oft-center
arrangement. has the advantage. that the. corre
sponding part of the gasket may be ?t».in...the
larger-groove where it will remain without atten
tion, and then the adjoining section of the de
vice, transverse or longitudinal, may be more
easily placed in relation thereto.
When the oif-center grooves are used all of the
keel sections on the same side of the canoe pref
erably have the larger groove.
Further, the larger grooves in the rib sections
should be placed in accordance with the order in
which it is desired to assemble the canoe. For
example, if it is desired to assemble the canoe
from stem to stern, if the larger groove is placed
in keel 49 of stem section 20 and in the rib 43
at the rear end of section 20, the gasket may be
?tted into the larger grooves in section 20 and
then the sections I8 and 24 may be easily ?tted
with relation to section 20 with much greater ease
than if the larger groove were in the forward end
rib of section 24. Also, if it is desired to assemble
stored in a more compactmanner.
" ’
a plurality of separate pieces I160l'which extend
transversely of the ribs and longitudinallyof the
centerline I20 ofthe canoe. As‘seen in Fig. 10
each ofthepi'ecesli?ll is a?ixed tola rugged'?exible
member 162 by "means of rivets I64. Flexible
member I.52:in:turn:is‘-attached'to ?exible cover
ingmaterial 40a. Whenl?attened. it will be seen a
.slightspacezi?? isipres‘entibetween ea-‘chpiece 4:60.
A so‘ltdmember 1:68 is;pr.ovid'ed was. left ofs/pieces
I60 in Fig. 10 and a corresponding solid member
H0 is provided at the other end of rib 44a, mem
ber I'Iil being af?xed to keel 49a. Both of these
members are a?ixed to ?exible member I62, also
by rivets I64. Further, as seen in Fig. 10A, the
tops and bottoms'of pieces I60 are parallel but the
sides thereof are cut at a predetermined angle.
The bottom corners of the pieces are chamfered,
as shown at I6I. When it is desired to assemble
the canoe, the rib 44a may be bent into the shape
seen in Fig. 9, which shape, it will be recognized, is
that of the rib of a conventional canoe. The an
gular sides of pieces I60 allow the rib 44a to be
bent into proper shape, andin so doing the pres
sure of the sides of the pieces I60 against the sides.
of the adjacent pieces provides a rigid rib con
struction. The chamfering of the pieces allows
'of saidhull sections attached to' the outside: of
'one ofv said hull sections and. 'arrangedto'cooper
ate with a member hook-shaped in cross-section
and extending substantially the entire length of
the transversely opposite hull section and at
"flexible 'member' I52' to be 'bent ‘into ‘aismo'oth
> :curve. 1 Decks, thwarts and seats as- previously
described may beiprovided to'hold the gunwales
of the canoe ‘together when this type of rib con
struction is used, and in so doing they cause the
tached to the outside of the transversely opposite
pieces I60 to be compressed together to provide
a rigid device. It should be noted that the pieces
I60 are provided only at the points of the ribs
havinga substantial curvature when the ribs are
assembled. J
hull section for forming a keel and at the same
time holding said hull sections in their proper
relative positions when the sections are assem
Well known dowel pin and dowel hole arrange
ments may be used to properly position the main
sections of canoe relative to one another, and the
clamps designated 50 and 54 described above may
' be employed to. hold the sections together.
When this type of rib construction is-used a
canvas cover (not shown) such as that disclosed
.in United States Patent 1,493,918 issued May 13,
1924; may be used on the outside of ?exible cov
ering 42, when the sections are completely assem
bled, to prevent a leakage of water into the canoe,
or‘ the in?atable gasket arrangement above de
scribed may be employed by providing ?exible end
ribs thick enough to properly hold the gasket or
- Figs. 11 and 12'sh0w another type of rib con
2. A sectional canoe comprising a plurality ‘of
separable hull sections, a plurality of ribs form
ing a part of certain‘ of said sections, a ?exible
covering material attached to said ribs, said ribs
being made of a rugged ?exible material‘ and hav
ing a plurality of notches in the‘upper surfaces
3'. A sectional canoe comprising a plurality of
separable hull sections, a plurality of ribs form
ing a part of certain of said sections,~ said ribs
comprising a rugged ?exible‘member and a phi‘
rality of " independent pieces extending trans
versely of said member, each of said pieces being
attached to said ‘?exible member, the sides of said
25 pieces being cut at an angle to the tops and hot
toms of the pieces and the corners of said pieces
struction which allows the main sections of the
canoe to be ?attened when disassembled. In
these figures the ribs are designated 44b, and in
adjacent said flexible member being chamfered.
4. A ‘sectional canoe comprising a plurality of
thesections to be ?attened when disassembled,
transverse abutting surfaces and ‘an in?atable’
1. A sectional canoe comprising a plurality of
tioning means on the longitudinally adjacent sec
tions toward one another and fastening the posi
tioning means on the longitudinally adjacent sec
tions relative to the positioning means on said
separable longitudinally adjacent and separable,
place of a plurality of independent pieces I60, rib 30 transversely opposite hull sections, means for se
curing said sections together with their edges in
44b is‘made of a rugged ?exible material and has a
abutting relation to form an assembled canoe, a
plurality of notches I16 cut therein, shapedas
groove’ in one of each pair of longitudinal and
seen in Fig, 12. This construction not only allows
but may be bent to the shape seen‘in Fig. ll‘to the 35 gasket in each of said grooves, said‘grooves' hav
ing an opening less in width' than the diameter
desired. rib shape. ' The ?exible ribs 441) are at
of said gasket, each of said longitudinal g'rooves'
tached to the ?exible covering material 46a. The
being in the members upon one side of said'canoe
canvas cover illustrated in the previously men
and each of said transverse grooves being inuthe
tioned United-States patent may also be used
with this type of construction, and the gunwales 40 ends of the sections toward one end of the canoe.
5. A sectional canoe comprising a, ?rst and a
may be held together as pointed out, above, there
second pair of separable longitudinally adjacent
by producing the necessary rib rigidity.
hull sections, the said second pair being trans;
It will be understood that numerous changes
versely opposite the said ?rst pair, a readily‘dis
may be made in the arrangement and location
iengageable thwart extending transversely of the
.of the parts shown in the preferred embodiment
canoe for connecting the’ transversely opposite
of my invention, and also, that many structural
‘sections, positioning means on each of one pair
changes may be made without departing from the
of longitudinally adjacent sections adapted to co
spirit thereof. The term “canoe’? in the claims
operate with positioning means on the adjacent
is to be understood to include boats and other
50' end of said thwart, and manually operable clamp
watergoing craft.
ing means for simultaneously drawing the posi
I claim:
separable transversely opposite hull sections,
meanswithin said hull sections for securing-said
transversely opposite hull sections in their proper
relative positions when the sections are assembled,
and a member. hook-shaped in cross-section and
extending substantially the entire length’of one
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