Center stern outboard motor mount for double-end canoes

This invention, a Center Stern Outboard Motor Mount For Double-End Canoes, is useful for mounting an outboard motor on a double-end canoe of any type or make, and places the weight and thrust of the motor at center stern. This arrangement is safer and more energy efficient than the side clamping motor mounts often used on double-end canoes. This Motor Mount consists of a block of material, such as wood, to which an outboard can be clamped, that is fastened to a rigid piece of elongated material such as aluminum or fibre glass, with bends and curves so as to conform to the profile of the stern deck and the stem of the canoe for which it is made, and is fastened securely thereto by a selection of bolts, taut lines, hooks and a locking peg, according to the pecularities of the various stern designs of double-end canoes. In certain applications where it is not feasible to bolt the Mount directly to the stern deck of the canoe, it is bolted to an Accessory Deck Plate which is normally made of the same material as the Motor Mount. An Accessory Deck Plate conforms around the forward edge of the deck and is secured in place on the deck by two taut lines connected to the Deck Plate and to the lower rear section of the Motor Mount.

This invention is a quickly and easily attachable and detachable OUTBOARD 
MOTOR MOUNT FOR DOUBLE-END CANOES, which places the weight and thrust of 
the outboard motor at center stern, as illustrated in the accompanying 
drawings (or similar articles so as to conform to the variously shaped 
sterns of the various types and makes of double-end canoes), made of 
suitable materials such as aluminum and wood or fibre glass and wood, and 
secured rigidly in place by: 
(1) a bend at the forward end of the mount that conforms around the forward 
edge of the stern deck of the canoe; 
(2) either (a) one or several bolts through the Mount and the stern deck 
(e.g. not used if it would entail puncturing an airtight flotation 
compartment), or (b) one or several bolts through the Mount and an 
Accessory Deck Plate secured forward on the stern deck under the Mount; 
(3) a cutout in the Mount which seats around the converging point of the 
stern deck, gunwales and stem; 
(4) either (a) a locking device (a strong peg or snap, etc.) inserted into 
the stern mooring ring which protrudes through a cutout of the Mount, so 
as to lock the Mount tightly against the stem, or (b) for canoes without a 
ring fixed to the stem, two taut lines (light cable or other suitable 
material) fastened on both sides at the lower rear section of the Mount, 
and either hooked over the gunwales at the two forward corners of the 
stern deck or fastened to an Accessory Deck Plate referred to in (2) (b) 
above.

DETAILED DESCRIPTION WITH REFERENCE BEING MADE TO THE FIVE SHEETS OF 
DRAWINGS FORMING A T HEREOF 
(The drawings in this specifications are typical. 
Similar articles conform to the variously shaped sterns of the various 
types and makes of double-end canoes) 
Drawing 1 
FIG. 1 
A double-end canoe such as that illustrated normally is propelled by the 
human effort of paddling. If one desires to use an outboard motor there is 
a problem - outboard motor mounts commercially available generally clamp 
to the side of the canoe. Both safety and efficiency leave much to be 
desired with a side mounted arrangement. 
FIG. 2 
This invention is a Center Stern Outboard Motor Mount For Double-End 
Canoes. Hereafter in this Description it will be referred to simply as 
"Mount". It can be made of aluminum or fibre glass or other suitable 
material which is compatible with the material of the canoe for which it 
is made. A model was made for a Grumman aluminum double-end canoe from a 
single piece of elongated rigid aluminum plate and a block of wood, plus 
bolts, wings nuts, washers, a steel peg and two short pieces of PVC pipe. 
The bends and curves of the Mount conform to the profile of the stern deck 
and stem of the canoe for which it is made. 
Part 1: The extreme forward section of the Mount has a bend so as to 
conform around the forward edge of the stern deck. Though this bend is not 
absolutely functionally necessary, it does help to keep the forward 
section of the Mount rigidly secured to the canoe deck and also is a 
smooth form for terminating the Mount at the forward end. 
Part 2: Wing nutted bolts secure the forward section of the Mount tightly 
to the top of the deck. 
Part 3: A triangular cutout in the Mount helps to keep the Mount rigidly 
secured on the canoe by seating snugly around the converging point of the 
stern deck, gunwales and stern. 
Part 4: For a canoe with a stern mooring ring fixed to the stem, the ring 
protrudes thru a cutout in the lower rear section of the Mount. 
Part 5: Where aluminum plate is folded back against itself at the lower 
rear section of the Mount, several bolts or rivets are used to help resist 
the weight of the outboard motor and hold the folded plate together. 
Part 6: A block of suitable material, usually wood, is fastened at the 
extreme rear end of the Mount. The outboard motor clamps to this block. 
Part 7: Spacers slipped over the bolts at the lower part of the block help 
keep the block rigidly positioned at its proper angle. Two short pieces of 
PVC plastic pipe serve as spacers on the model. 
FIG. 3 
This is a typical Mount attached to the stern of a double-end canoe. This 
and the other drawings in the Specification are based on the model which 
was made for a Grumman aluminum canoe. 
Part 1: The extreme forward section of the Mount conforms around the 
forward edge of the stern deck. 
Part 2: Wing nutted bolts through holes in the stern deck and the Mount 
secure the Mount tightly against the top of the deck. 
Part 6: A wooden block fastened at the extreme rear end of the Mount is the 
part of the Mount onto which an outboard can be clamped. 
Part 10: The stern deck of the canoe. 
Part 11: The converging point of the stern deck, gunwales and stem. The 
Mount seats down around this point. 
Drawing 2 
FIG. 4 
This is a plain top view of a typical Mount attached to the stern of a 
double-end canoe. 
Part 2: Wing nutted bolts through the deck and the Mount hold the Mount 
tightly against the deck. 
Part 6: Wooden block fastened at the extreme rear end of the Mount to which 
an outboard motor can be clamped. 
Part 10: the stern deck of the canoe. 
Part 11: The converging point of the stern deck, gunwales and stem 
protrudes through a cutout in the Mount. 
Part 12: Represents the double-end canoe to which a Mount has been 
attached. 
FIG. 5 
This is a plain side view of a typical Mount attached to the stern of a 
double-end canoe. 
Part 1: The extreme forward section of the Mount conforms around the 
forward edge of the stern deck. 
Part 2: Wing nutted bolts through holes in the deck and the Mount secure 
the Mount tightly against the deck. 
Part 8: The stern mooring ring, which is fastened to the stem, protrudes 
through a cutout in the Mount. 
Part 9: A strong peg inserted down into the mooring ring secures the lower 
rear section of the Mount tightly against the stem. 
Part 10: The stern deck of the canoe. 
Part 11: The converging point of the stern deck, gunwales and stem 
protrudes through a cutout in the Mount which seats snugly around this 
point, helping to secure the Mount rigidly on the canoe. 
Drawing 3 
FIG. 6 
This is a plain rear view of a typical Mount attached to the stern of a 
double-end canoe. 
Part 6: The wooden block fastened at the extreme rear end of the Mount to 
which an outboard motor can be clamped. 
Part 8: The stern mooring ring protruding through a cutout in the Mount. 
Part 9: A strong peg inserted down into the mooring ring secures the Mount 
tightly against the stem. 
Part 11: The converging point of the stern deck, gunwales and stem 
protrudes through a cutout in the Mount which seats around this point, 
helping to secure the Mount rigidly on the canoe. 
FIG. 7 
This figure illustrates a typical Mount attached to the stern of a 
double-end canoe employing an Accessory Deck Plate and two taut lines, one 
on each side of the canoe from the Deck Plate to the lower rear section of 
the Mount to secure the Deck Plate tightly against the top of the deck. 
The forward end of the Deck Plate has a bend so as to conform around the 
forward edge of the deck. It has two holes, one at each side, to which the 
two taut lines are fastened. An Accessory Deck Plate is used for 
applications of the Mount which do not allow for holes to be made in the 
stern deck. The Mount is bolted to the Deck Plate just as it other wise 
would be bolted to the deck. 
Part 1: The extreme forward end of the Mount conforms around the forward 
end of the Accessory Deck Plate. 
Part 2: Wing nutted bolts through the Accessory deck Plate and the Mount 
secure the Mount tightly against the deck Plate. 
Part 13: An Accessory Deck Plate secured at the forward section of the 
stern deck holds the forward section of the Mount tightly in place. 
Part 14: One of the two lines fastened to the Deck Plate and the lower rear 
section of the Mount to secure the Deck Plate in place on top of the stern 
deck. The lines are made taut by a stiff spring or turnbuckle or other 
suitable device. 
Part 15: One of two holes in the lower rear section of the Mount to which 
the taut lines securing the Accessory Deck Plate are fastened. 
Part 16: One of two holes in the Accessory Deck Plate to which the taut 
lines securing the Deck Plate in place are fastened. 
Drawing 4 
FIG. 8 
This is a typical Accessory Deck Plate, normally made of the same material 
as the Mount. It fits over the extreme forward section of the stern deck. 
Part 13: The Accessory Deck Plate. The extreme forward end has a bend which 
conforms around the forward edge of the stern deck. It has one or more 
holes in its center section so that it and the Mount can be bolted 
together. It has a hole at each side to which two taut lines are fastened 
to hold the Deck Plate in place on the deck. 
Part 14: A line which fastens to the Accessory Deck Plate and the lower 
rear section of the Mount in order to hold the Deck Plate (and the Mount 
bolted to it) in place on the forward stern deck. 
Part 16: One of the two holes at the sides of the Accessory Deck Plate for 
fastening the two lines which hold it in place on the deck. 
Part 17: One of two holes in the center section of the Accessory Deck Plate 
for the bolts which hold the Deck Plate and the Mount tightly together 
FIG. 9 
This illustrates a typical Mount attached to the stern of a double-end 
canoe employing two taut lines hooked over the gunwales and fastened to 
the lower rear section of the Mount to secure the Mount tightly against 
the stem on a canoe not having a stern mooring ring fixed to the stem. 
Part 14: One of two taut lines, employing a stiff spring or turnbuckle or 
other such device, which fastens to the lower rear section of the Mount 
and is hooked over the gunwale at a forward corner of the stern deck. 
Part 15: One of two holes in the lower rear section of the Mount to which 
the taut lines are fastened. 
Part 18: One of two hooks fastened over the gunwales at the forward corners 
of the rear deck to which is fastened the taut lines which hold the lower 
rear section of the Mount tightly against the stem. 
Drawing 5 
FIG. 10 
This illustrates an outboard motor mounted at center stern on a double-end 
canoe using a typical Mount described in this Specification.