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Патент USA US3087465

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April so, 1963
G. G. COLLIER
3,087,455
BOAT PROPULSION UNIT
Filed May 20. 1960
2 Sheets-Sheet 1
INVENTOR.
Gilbert 6. Collier
QQZZQJZMQ
ATTORNEY
April 30, 1963
e. e. COLLIER
3,087,455
BOAT PROPULSION UNIT
Filed May 20, 1960
2 Sheets-Sheet 2
INVENTOR.
Gilbert 6. Collier
BY
ATTORNEY
United States Patent O?ce
3,037,455
Patented Apr. 30, 1963
“Al
3,087,455
2
Referring to FIGURE 1, which fragmentarily shows
Gilbert G. Coltier, 2924 Catherine St, Shreveport, La.
Filed May 20, 1964}, Ser. No. 30,670
3 Claims. (Cl. 115—25)
the boat 10', the invention primarily comprises a ?n re
ceptacle plate ‘11 which is attached to the sides of the
boat 10 by screws 12, or other suitable device. The plate
-11 is elongated in form and its forward portion 13 is
This invention relates to pedal operated boats, and
it has particular reference to propelling devices by which
more readily seen in FIGURE 5.
BOAT PROPULSION UNIT
preferably rounded and has a gradual taper, as may be
'
Spaced rearwardly from the forward portion 13 of
small boats can be moved over water by the manipulation
of levers or pedals, and where speed is not a requisite, as 10 the plate 11 is a recess Which extends the remaining
length thereof and is open at the rear end 15 of the plate
when used for ?shing or hunting water fowl, and the
11, as shown in FIGURES 1 and 2, to de?ne a shallow
principal object of the invention resides in the provision
receptacle 14 whose upper and lower walls 16 and 17
of a compact ?n unit adapted to be installed in pairs on
have exterior rounded surfaces which, with the inwardly
any type of small row boat and operated from the in
curved forward end portion 13 of the plate 11, presents
terior thereof.
15 minimum resistance ‘as the boat 101 is moved through
An object of the invention is that of providing a
the water.
simple ‘and economical device capable of being installed
A slot =18 is formed longitudinally in the plate 11
in the forward portion -13 thereof and communicates with
nism extending through the hull while completely seal
the forward rounded end of the receptacle 14, as shown
ing the same against leakage.
20
in FIGURE 1, through which the arm 19 of a ?n assem
Another object of the invention resides in the pro
in the sides of a boat, and having an operating mecha
vision of a boat propulsion mechanism by which the
bly 20 extends and is capable of a reciprocating motion
in a horizontal plane. The arm 19 is formed with a
boat can be maneuvered about the water by the feet while
circular bearing plate 21, shown in FIGURE 2, and has
the hands can remain free to handle ?shing gear, guns,
and the like, as in ?shing and hunting activities. It is. 25 its longitudinal axis ‘angled obtusely with respect to the
pivotal axis 22 of the bearing plate 21. Another arm
contemplated that the mechanism may be installed either
23
is formed with the plate 21 opposite the arm 19
fore or aft of the longitudinal center of the boat, or both
forward or aft, as desired, and operated by one or two
persons aboard.
A further object of the invention is to provide a unique 30
butter?y type of ?n, pivotally connected to the operating
levers, and hinged longitudinally to fold upon itself where
and is axially aligned with the pivotal axis 22 of the
plate 21.
Secured at one end to the arm 19, as by welding, or
other device, is a rod 24 which provides a hinge for a
pair of blades 25 and 26 which together comprise a ?n
capable of propelling the boat 10 when moved in an
by to present a minimum of resistance in its forward
arc toward the receptacle plate 11. Each of the blades
‘movement while presenting its maximum surface to the
35 25 and 26‘ has a pair of integral journals 27 and 28
water as it is moved rearwardly.
by which the blades are pivotally attached to the rod
Broadly, the invention contemplates the provision of
24 at their inner or adjacent edges, as apparent in FIG
a ?n assembly which in its inoperative positon, lies with
URE 2, so that the blades 25 and 26 can fold together
in a receptacle attached to the sides of a boat whereby
in their forward movement, as in the manner shown in
to present a minimum of resistance in the forward move
40 FIGURE 3.
ment of the boat.
The blades 25 and 26 are normally extended in the
While the foregoing objects are paramount, other and
positions shown in FIGURE 1 by a relatively light spring
lesser objects will become manifest as the description
29 coiled about the rod 24- and having portions 3% and
proceeds, taken in connection with the appended draw
ings wherein:
31 hearing against the blades 25 and 26 and readily yield
FIGURE 1 is a perspective illustration of the propelling
?n in extended position, and fragmentarily, in dotted lines,
forwardly upon each. stroke.
able under water resistance when the ?ns are moved
A pair of cylindrical spacers 32 and 33 are arranged
in closed position, the boat being fragmentarily shown.
on the rod 24 to prevent movement of the blades 25
FIGURE 2 is an exploded illustration, in perspective,
and 26 therealong, the inner spacer 33 hearing against
showing the ?n and its receptacle plate, and the assem~
50 the shoulders 34‘ formed at the juncture of the rod 24
bly of parts therefor.
FIGURE 3 is a perspective illustration of the ?n in
folded position in its forward stroke.
FIGURE 4 illustrates, in perspective, the pedal and
linkage mechanism inside the boat for manipulating the 55
pair of ?ns, the bow of the boat being fragmentarily
shown.
FIGURE 5 is a fragmentary plan View of the ?n re
with the arm 19, shown in FIGURES 1 and 2. The
hinged blades 25 and 26 are held in open position by en
gagement of their adjacent edges. The blades 25 and
26 are prevented from being collectively rotated by their
engagement with the upper and lower surfaces of the
arm ‘I9 at their inner ends, and by engaging a pin 35
arranged through the outer end of the rod 24, the latter
being shown in FIGURE 2. The blades are retained on
ceptacle plate, with portions cut away to fragmentarily
the rod 24 by a nut 36 threaded on the outer end there
show the ?n reposing therein with its longitudinal hinge, 60 of.
and illustrating the actuating lever both in dotted and solid
The bearing plate 21, of which the arms 19 and 23
lines in operative and inoperative positions, respectively
are integral parts is pivoted on a bushing 37 arranged on
of the ?n,
a bolt 38 which extends through an integral semi-circu
FIGURE 6 is an elevational sectional view on lines
6-6 of FIGURE 5 showing the sealing ring, the lever 65 lar ?ange 39 on the inner surface of the receptacle plate
11 and through a conformable cover plate 40 which is
bearing plate and its housing.
secured at each end to the ?ange 39 by screws 41, as
FIGURE 7 is a fragmentary sectional view, on lines
shown in FIGURES 5 and 6. The ?ange 39 has a re
7-7 of FIGURE 5, showing the ?n receptacle plate
cess 42 in its inner face to receive the bearing plate 21
sealing ring, the lever bearing plate and its housing, and
and, with the cover plate 40 provides a housing there
FIGURE 8 is a plan view of the upper gasket for the 70 for,
as shown in FIGURE 6.
bearing plate housing, the lower gasket being shown in
The ?ange 39, with the cover plate as, is projected
dotted lines.
through a slot 43 in a side of the ‘boat 10, as shown in
3,087,455
3
.
4
of said boat at said opening therein and covering said
FIGURES 4, 5 and 7, so that the arm 23 extends into
opening, each of said plates having a recess formed sub
the boat It} where a longitudinally adjustable link 44» is
stantially coextensive ‘therewith and a slot providing an
pivotally attached by a clevis 45 to the outer end of the
extension of the forward end of the recess in each plate,
arm 23, a pin 46 being passed through the clevis and an
a semi-circular ?ange formed with the inner face of each
aperture 47 in the end of the arm 23. A bushing 48
plate and extending through the opening in each side of
provides a bearing for the pin 46.
said boat, each said ?ange having a recess extending
The opposite end of the link 44 has a clevis 49 thereon
across its upper face aligned with the bottom of each said
which is pivotally attached to crank arm 50 rigidly ?xed
opening, a cover plate secured to the upper face of each
to a shaft 51 rotatably supported by hearing supports 52
?ange
and beyond the sides of said recess therein, a cir
and 53, the former being attached to the inner wall of 10 cular bearing
plate, having inner and outer arms formed
the boat 16‘ while the latter is secured to the bottom
on opposite sides thereof, pivotally secured in the recess
thereof, as shown in FIGURE 4. Attached to the inner
of each ?ange and between said ?ange and said cover
end of the shaft 51 is a pedal 54 by which the shaft can
plate, whereby the outer arms extend through the open
be oscillated by the foot to effect reciprocation of the ?n
assembly 26 through the link 44 and the arms 23 and 19. 15 ings in said boat exteriorly thereof and the other of said
arms extends interiorly of said boat, a rod integral with
It has already been stated that the invention is installed
and forming an extension of each of the exteriorly ex
in pairs, one assembly on each side of the boat 10, and
tending
arms, a pair of blades hingedly connected to
thus a pedal 54 is provided for each of the ?n assemblies
each of said rods along their adjacent longitudinal edges
20. Each pedal 54 has its fulcrum located nearer the
and foldable upon themselves upon horizontal pivotal
heel portion thereof so that the greater portion is forward 20 movement
of said rods forwardly of said boat, a pair of
to provide greater leverage in operating the ?n assembly
shafts rotatably arranged transversely of the bottom of
to propel the boa-t 10 forward. The heel portions of the
said boat, each having a crank arm ?xed thereon, and
pedals 54 have upturned ?anges 55 to support the oper
a link operatively connecting each said crank arm to the
ator’s heels when the pedals 54 are depressed rearwardly
inner end of each of said interiorly extending arms of
to return the folded ?n assemblies 2% to their operative 25 said bearing plate, and a pedal ?xed to each of said
positions. This operation requires less leverage because
shafts for rotating the same to oscillate said bearing plates
the ?ns are brought back to their operative positions
and the arms formed therewith whereby to operate said
more easily due to their minimized resistance in the water.
hingedly connected blades on said rods.
To facilitate the operation of the leverage assembly
2. The structure of claim 1, the receptacle plate having
provided by the link 44, and the arms 23 and 19, the
an elongated recess, substantially coextensive with its
bearing plate 21, of which the arms 19 and 23 are in
Width, in its outer face, rearwardly thereof, and the slot
tegral parts, is lubricated in its housing through a plu
of the receptacle plate communicating with the forward
rality of curved and diverging slots 56 and 57 formed
end
of the recess, the rod being movable pivotally with
in gaskets 53 and 59 between the ?ange 39 and the under
the arm from a retracted position, in which the oppositely
surface of the plate 40, as shown in dotted and solid lines,
extending blades and the rod are received in the recess, to
respectively, in FIGURE 8 and in dotted lines in FIG
an extended position in which the blades and the rod
URE 5, and in the sectional view shown in FIGURE 7.
extend
laterally outwardly and forwardly relative to the
A conventional grease ?tting 60 is threaded into the plate
direction of movement of the boat.
40 which communicates with the slots 56, as well as an
3. The structure of claim 2, a resilient sealing ring
arcuate slot 57 also formed in gaskets 58 and 59 to con
surrounding
the opening of the sides of said boat, be
duct the grease onto the surfaces of the plate 21 and
tween
the
sides
and the receptacle plate, a pair of resilient
about the perimeter thereof within its housing to aid in
spacer elements between the ?ange and its cover plate,
sealing the housing against leakage‘of water from the
exterior of the craft.
Plugs 61, of a nubber~like material,
forwardly and rearwardly of the arm, whereby the ?ange
and its cover plate are connected under tension, a pair
are impressed in recesses 62 formed in the ?ange 39 on 45
of gaskets on opposite sides of the arm, between the arm
forward and aft edges of the rotatable bearing plate 21
to further seal the bearing plate housing against leakage.
A sealing ring ‘63 of a suitable yieldable material is
and the ?ange and its cover plate, providing a ?uid seal
therebetween, the gaskets having lubricating channels
therein for application of a lubricant to the oppored sur
arranged about the slots 43 in the sides of the boat 10
between the outer wall thereof and the receptacle plate 50 faces of the arm and the ?ange and its cover plate to
provide a more ?uid tight joint therebetween while at the
11, as shown in FIGURES 5, 6 and 7.
same time permitting free pivotal movement of the lever
The structure herein shown and described is obviously
relative to the ?ange and its cover plate, and a lubricating
capable of certain changes and modi?cations, by persons
?tting operatively connected to the cover plate and com
skilled in the art, without departing from the spirit of
municating with the lubricating channels.
the invention or the scope of the appended claims.
References Cited in the ?le of this patent
What is claimed is:
1. In combination with a small boat having opposing
UNITED STATES PATENTS
sides, each having an opening therein forwardly of said
44,380
Bachmann ___________ __ Sept. 27, 1864
boat and partially below the normal water line, pedal
Greenlee _____________ __ Aug. 23, 1955
means for propelling said boat, comprising, a receptacle 60 2,715,884
2,733,680
Wagner _______________ __ Feb. 7, 1956
plate for a pair of ?n assemblies attached to each side
.
l
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