US 3115860 A
Description (OCR text may contain errors)
Dec. 31, 1963 PAYNE 3,115,860
PONTOON-PROVIDED SKIFF Filed July 2, 1962 J6 INVENTOR.
EU6E/VE 1. PA Y/VE Anne/wry I United States Patent O Eugene L.
Filed 3 Claims.
This invention relates to a skiff construction in which pontoons are provided to cause the same to plane over the water whether under its own power or when being towed.
An object of the invention is to provide a ski construction for small boats, such as dinghies, rowboats and other such craft, that renders the same faster-moving over the water when motor-driven and when towed, and affording increased pleasure and utility to the user.
Another object of the invention is to provide pontoons for small boats that may be applied as attachments, thereby enabling the provision of a pontoon-provided skiff that may be transported in or on automobiles in knockdown form and is adapted to be readily assembled at the site of use.
This invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily disconnected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.
The invention also comp-rises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description and which is based on the accompanying drawing. However, said drawing merely shows, and the following description merely describes, preferred embodiments of the present invention, which are given by way of illustration or example only.
In the drawing, like reference characters designate similarly parts in the several views.
FIG. 1 is a plan view showing a pontoon-provided skiff according to the present invention.
FIG. 2 is a side elevational view thereof.
FIG. 3 is a view as seen from the stern of the skiff.
FIG. 4 is an enlarged and fragmentary sectional view as taken on the line 4-4 of FIG. 1.
\FIG. 5 is a similar view showing a ski-mounting m'odification.
:T he skiff that is shown in the drawing is intended as typical of lightweight craft of the rowboat and dinghy type. In the usual way, said skiff has sides 11 that are ordinarily reinforced by rails 12 along the gunwales and by chines 13 where the sides join the skiff bottom 14. The rails and chines may be provided in other ways, as in metal, plastic or lFiberglas skiffs or boats. In any case, the same constitute reinforcements to which the pontoons 15. may be secured as will be hereinafter explained.
According to the invention, two pontoons 15, of righthand and left-hand design, are secured to the two skiff sides 11 in such relation to the skiff that such increased buoyancy is imparted to the skiff as to cause the same to be raised partly out of the water due to planing action of the pontoons during rapid movement of the skiff.
Each pontoon 15 comprises, generally, a float 16, and at least two brackets 17 connected to longitudinally spaced portions of the float 16 and adapted to be fixedly, yet removably, connected to a side 11 of the skiff according to its rightand left-hand design.
Each float 16 comprises an elongated, preferably square-sectioned flotation member 18 as long as or longer than the skiff and formed to have an upcurved forward end 19. The same is advantageously made of a polystyrene foam material or similar light and buoyant expanded plastic material and covered with a suitable coat of epoxy Plastalloy paint to strengthen and protect the 3,115,860 Patented Dec. 31, 1963 foam material and render the same non-hygroscopic. The member 18 is highly buoyant due to the cellular form of the plastic used, the example that is given merely being typical of such plastic foam materials.
Each float further includes a ski 20 that lines the under surface of the flotation member 18 and part of the curved end 19 of said member. Wood, metal or rigid plastic may be used for the skis and the latter may be provided with one or more longitudinal stiffener ribs 21 that, as shown, may be embedded in the lower portion of the member 18. Longitudinally spaced bolts 22 connect the skis 20' to the flotation members 18.
Each bracket 17 of each float 16 may comprise a metal casting or a structural assembly of strip plate or steel to have a mounting member 23, a carrier member 24, and a brace 25 rigidly connecting the members 23 and 24.
The mounting member 23 may be connected by bolts 26 to the skiff 10 to lie against the sides thereof, or a rod or cable 27 (FIG. 5) may be used to tie the lower end of said member 23 to the keel of the skiff or to the member 23 on the opposite side. FIG. 4 shows how the rails 12 and chines 13 are utilzed to provide strength for the mount.
The bolts 22 pass through the carrier members 24 and, therefore, serve to firmly connect the members 18 and 20 to their respective brackets 17.
The pontoons 15 are light in weight and may remain secured to the skiff during transport, if space is available in the transport vehicle. When so secured, the pontoons impose but little force on the skiff sides to bow or flex the same. It is a simple matter, however, to transport the skiff and p'ontoons in separated condition for more compact stowage, since the pontoons may be stowed partly within the skiff. Assembly is simply effected, as can be seen.
The floats 16 may be advantageously made of an expanding type of poly-urethane foam, preferably covered with Fiberglas and resin. The Fiberglas of this modification produces a surface hard enough to enable elimination of the skis 20. Other lightweight materials, such as lightweight wood, balsa, for instance, may be used instead of the foam. Regardless how constructed, the present pontoon-provided skiff sails very well without a centerboard, since the pontoons resist sideward drift.
Made of a suitably smaller size, the present pontoons, without the mounting means 17, may be used as water skis to give the user the feeling of skiing on stilts.
While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out the invention, the construction-s are, of course, subject to modification without departing from the spirit and scope of the invention. Therefore, it is not desired to restrict the invention to the particular forms of construction illustrated and described, but to cover all modifications that may fall within the scope of the appended claims.
Having thus described this invention, what is claimed and desired to be secured by Letters Patent is:
1. A pontoon unit for light skiffs and adapted to be secured to a side of a skiff, said pontoon unit comprising:
(a) a ski formed of rigid material and having a flat bottom under face and provided with a longitudinal rib along its upper face,
(b) at least two longitudinally spaced bolts secured to said rib and extending upwardly therefrom,
(c) a light and buoyant rectangularly sectioned flotation member disposed on the upper surface of the ski and having a longitudinal groove in which the rib is embedded,
(d) the ski and flotation member being generally cuextensive transversely,
(e) a transverse brace secured to each bolt and disflotation member comprises a. poly-urethane foam with a coating thereover .of Plastailoy paint.
3. A pontoon unit according to claim 2 in which the lengths of the braces differ one from .the other according to the configuration of the skiff side; the flotation memher, thereby, having a ,dispositioniparallel to the longi- 15 tudinal center of the skiff.
References Cited in the file of this patent --UNITED- STATES PATENTS Anderson May 13, Crisp May 11, Billingham Aug. 30, Bender -LJMar. 27, Fortin Apr.- 3,
Y FOREIGN PATENTS France Oct. 6; France -Mar, 7; France June 23, Netherlands Mar. 15, Great Britain Oct. :13,