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Патент USA US2386215

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'OCt. 9, 1945.
Filed May 19,
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. Patented Oct. 9, 1945
Harold B. Harvey, Pensacola, Fla.
Application May 19-, 1944, Serial No. 536,362
1 Claim.
The present invention relates to new and use
(01. 1155-19)
therefor on the rear end portion or nose I3 ‘of
ful improvements in boats, and has for its pri
the shell 8. In the embodiment shown, the for
mary object to provide a vehicle of this character
ward end portion of the shaft II is journaled
comprising propelling means of ‘a unique con
in a bearing I4 on the engine It. The engine Illa
struction and arrangement.
drives the shaft ll through a belt and pulley
Another very important object of the invention
connection [5.
is to provide a boat of the character described
Mounted on the shell 9 is a propeller which is
comprising a hull of novel shape whereby water
designated generally by reference character IS.
and wind resistance will be reduced to a minimum.
The propeller 16 includes a substantially bullet
Other objects of the invention are to provide 10 shaped, rotary outer shell I‘! which encloses the
a boat of the character set forth which will be
stationary inner shell 9 in spaced relation there
comparatively simple in construction, strong,
to. Suitable bearings I 8 are provided for the
durable, seaworthy, attractive in appearance and
outer shell ll. Fixed on the outer shell I‘! and
which may be manufactured at low cost.
extending substantially from end to end thereof
All of the foregoing and still further objects 15 is a'spiral ?n or blade l9.
and advantages of the invention will become ap
A drive connection 20 is providedbetween the
parent from a study of the following speci?ca
shaft H and’ the propeller It. This connection
tion, taken in connection with the accompany
includes an internally toothed ring 2| which is
ing drawings wherein like characters of reference
?xed in the nose portion 22 of the shell ll. Fixed
designate corresponding parts throughout the
on the rear end portion of the shaft l I is a gear
several views, and wherein:
23 which is meshed with the teeth of the ring 2|.
It is thought that the operation of the boat will
be readily apparent from a consideration of the
foregoing. Briefly, the power plant If) rotates
the propeller I6 on the stationary inner shell 9
through the belt and pulley drive ii, the shaft l l
and the connection 20. Thus, the substantially
spiral ?n or blade I9 is caused to turn in the
water and simply function substantially in the
Figure 1 is a top plan view of a boat construct
ed in accordance with the present invention.
Figure 2 is a view in side elevation thereof with
the rear end portion of the propeller {broken
Figure 3 is a view in bottom plan of the boat.
Figure 4 is a view in longitudinal section
through the propelling means, taken substan
tially on theline 4-4 of Figure 1.
30 manner of an auger for propelling the boat. A.
Figure 5 is a view in transverse section, taken
continuous “bite” is had in the Water from end
substantially on the line 5-5 of Figure 1.
to end of the ?n or blade l9. The engine l0 may
Figure 6 is a view in transverse section, taken
be controlled from the cabin 6 in any desired
substantially on the line 6-6 of Figure 4.
manner. Also, any suitable means may be pro
Figure 7 is an enlarged fragmentary view in 35 vided for steering the boat.
transverse section, taken substantially on the line
It is believed that the many advantages of a
1-1 of Figure 4.
boat constructed in accordance With the present
Referring now to the drawings in ‘detail, it
invention will be readily understood, and al
will be seen that the embodiment of the inven
though a preferred embodiment of the boat is as
tion which has been illustrated comprises a, hull 40 illustrated and described, it is to be understood
of suitable dimensions and material which is
that changes in the details of construction and
designated generally by reference character I.
in the combination and arrangement of parts
The hull l includes a bottom 2 of substantially
maybe resorted to which will fall within the
the shape shown to advantage in Figures 3 and 5
scope of the invention as claimed.
of the drawings.
What is claimed is:
Extending longitudinally into the hull I from
A boat comprising a hull having a recess ex
the stern thereof is a recess 3. Thus, the stern
tending longitudinally thereinto from the rear
portion of the hull l is divided into what may be
end thereof and providing a pair of spaced, par
considered a pair of spaced, parallel stabilizers 4.
allel, rearwardly extending stabilizers, a cabin in
The bottoms of the stabilizers 4 are stepped, as 50 the hull forwardly of the recess, a transom ex
at 5.
tending between the stabilizers and constituting
A cabin 6 is provided in the hull l forwardly
the rear wall of the cabin, an elongated, station
of the recess 3. The cabin 6 rises above the deck
ary inner shell ?xed on the transom and com
‘I of the hull |. Fixed on the transom 8 which
municating with the cabin, said inner shell ex
extends between the stabilizers 4 at the rear of 55 tending rearwardly in the recess between the
the cabin 6 is a substantially bullet-shaped, sta
stabilizers, a power plant in the inner shell, an
tionary inner shell 9. A suitable engine It! is
outer shell rotatable on the inner shell, a, spiral
mounted in the shell 9. Mounted centrally in
blade on said outer shell, and means‘operatively
the shell 9 is a longitudinal propeller shaft ll.
connecting the power’ plant to the outer shell for
‘ The rear end portion of the shaft ll extends 60
through a suitable bearing 12 which is provided
propelling the boat.
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