US2573745A

US2573745A - Model yacht

Info

Publication number: US2573745A
Application number: US49393A
Authority: US
Inventors: Wallenberg Victor Henri
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-09-15
Filing date: 1948-09-15
Publication date: 1951-11-06
Anticipated expiration: 1968-11-06
Also published as: DE845464C; CA488822A; GB660148A

Description

NOV. 6, v H WALLENBERG .I MODEL YACHT Filed Sept. l5, 1948 y 2 SHEETS-SHEET 1 Nov. 6, 1951 v. H. WALLENBERG 2,573,745

MODEL YACHT Filed sept. 15, 1948 2 SHEETS-SHEET 2 Patented Nov. 6, 1951 vUNITED STATES PATENT OFFICE MODEL YACHT Victor Henri Wallenberg, Stockholm, Sweden Application September 15, 1948, Serial No. 49,393

s claims. (ci. 1144+323) .r This invention relates to a model yacht and more particularly to a model yacht of catamaran type, consisting .of a vlongitudinal .supporting ele- .lmentand two identicalpontoons fastened to said supporting element on either side, further sup- A similar model yacht is disclosed-in the patent application Serial No. U. S. 22,420, led April `2.1, l948,.now abandoned. The present inven- `.tion relates to further improvements of thepro-l posed new model yacht.

A purpose of this inventionv is to provide a model yacht at a low cost resulting from the fact that each part of same is so constructed that it is suitable for mechanical manufacture and thatvthe yacht is composed of few parts.

Another purpose is to provide a light but nevertheless. large model yacht, in order Ato attain speed and rigidity.

Y Another purpose is to provide a model yacht Awhich can be disassembled into separate components and which is easily and quickly assembled and stripped as well as trimmed and in disassembled condition can be carried in an ordinary portfolio or small hand bag. Certain parts are intended to be supplied permanently .mounted while other parts are intended to be .mounted for each sailing with a view to creating la hobby article, which is interesting for the purchaser to assembly and disassemble. Moreover, the components of the yacht are so designed that y,no tools are required for assembling.

Another purpose is to provide a model yacht sailing at least as well as a model yacht of the ordinary design and of the most expensive kind withD the same sail area.

Still another purpose is to provide a model yacht which may be manoeuvred with greater ease than ordinary model yachts. y g

A number of important details of construction will be described below:

Figl 1 shows a longitudinal viewV of a design of my model yacht.

Fig. 2 shows the model yacht seen fromY above,

without the rig mounted thereon.

Fig. 3 shows-in a larger scale-a front view ,of a pontoon.

Fig. 4 showsalso in a larger scale-a detail of :a fastening device for the mast of the model Fig. 5 showsalso in a larger scale-the lower ,part of the mast turned 90 as compared with Fig.v 4.

, Fig. 6 shows-also in a larger scalethe chain plate of the mast.

Fig. '7 shows-also in a larger scale--the upper lfastening device for the stays of the mast and the shrouds ofthe foresail.

Fig. V8 shows-also in a larger scale-this fastening device seen from above.

Fig. 9 showsf-also in a larger scaledetails of the lower `fastening device for the foresails Vshroud and the iront fastening device respectively for the foresails boom. p

Fig. 10 `shows-also lin a larger scalethe ymanuvring device for the centerboard of the Y-model .yacht in a turned down position.

Fig. 1l shows-also in a larger scalea detail o f the manuvring device shown in Fig. l0 in its position when the centerboard is lifted.

The supporting frame ofthe model yacht consists of two longitudinal tubes I which are `squeezed together at their ends ,and drilled supporting frame. parts I0, II, one of which, I0, is inserted by means y of a plug I2 in the end of the other one, I I.

through at the squeezing points 2, so that crosswise extending pins 3, 4 can be inserted through ,means of nuts 6 on the inner sides of the tube ends. g On the outer ends of the bow pin the fastening eyes 8 of the pontoons 'I are placed, which are held in position by means of wing-nuts 9. In Vthis way tubes I and pins 3, 4 together form a The tubes.V are made in two The tubes can thus be taken apart and carried in a small hand bag or portfolio.

lThere are holes in the tubes for inserting the chain plate or shroud pin I3, which extends a sufcient distance outwardly of the tubes to be used for attaching the mast shrouds I4. Shroud pin I3., is prevented from sliding sideways by shoulders I5. In addition to this, there are holes at the inner sides of the tubes for inserting the keel *shaft I6, on which the keel or centerboard II is suspended. This suspension permits easy installation and removal of the keel. The outer I sides of the frame tubes I support the keel shaft n`4 IIi,-` preventing it from being pushed sideways.

VGenterboard I1 can be swung on its shaft I6 in a longitudinal direction.` Suitably two or more holes are `.arranged successively for the shroud on Vthe thicker middle tube.

3 pin and keel shaft, in order to permit trimming of the mast I8 and keel I1 in relation to each other.

Each pontoon 1 consists of rubber cloth vulcanized together to form a tube with fastening yokes I9 vulcanized in, by means of which the pontoon ends are connected to the pins 3, 4. The vulcanized-in part 2i) of fastening yoke I9 is bent tov the shape of a circle, and the ends 2| of the cloth, which are to be vulcanized to these yoke parts, are cut to form tapering ends 22 which, moreover, are curved downwards in bow shape towards the stern. The upper part I9 of the pontoon yokes, as will be seen, is bent rearwardly towards fasteners 2 on the supporting' tubes and there forming fastening eyes 8. To each pontoon tube 1 a valve 23 is attached, for instance an ordinary bicycle type valve, by means of which the pontoon tubes can be inated. Alternatively the pontoon tubes can be inflated by means of simple valves such as those used on toy balloons. When inated, the pontoons are stiifened and carry the supporting frame, the longitudinal tubes of which in their turn serve to stay the pontoons.

,When the. model yacht is taken apart, each pontoon can be rolled on one of the end yokesafter the air is let out-and made into a package, which does not require much space.

The mast I8 as shown consists of three

tubes

24, 25, 26, which permits convenient packing. The middle tube 25 is made a little thicker than the other tubes 24,v 26, which are inserted into the ends of the middle tube against their stops 21 (-Fig. 7). The lower mast tube- 26 is supported by a carrying pin 28, the` ends of which 29 are bent to grip around tubes I on the supporting frame. .The carrying pin has in the middle a downward bend 30, and the lower part of the -mast is tapered as at 3I to permit the mast to 2.4, 25' of the mast, the mainsail has a recess 35,

into which a disc 36- is inserted after the top tube 24 has been separated from the thicker tube 25. Disc 36A is provided with a hole 31 having the same diameter as the top tube, which results in'y thedisc being held by the top tube and resting The disc is also provided with a pair of holes 38 for receiving the shrouds I4 and a peg pointing upwards-39'-for fastening the forestay and the foresail. The

foresail 4I] has a shea-th 4I, through which a stay 42 is pulled, which at the lower end is shaped to form a hook 43, intended to be hooked to the fastening yoke formed on bowpin 3. The top end of forestay 42 is also shaped to form a hook 44', to which is attached a wire 45, by means of which the forestay isattached and fastened by a few half-hi'tches 46Y (Fig. 7) around peg 39 of disc 36. The same wire is then put around a hook 41 at the top` of the foresail and is again fastened by a few half-bitches around peg 39, while the foresail is stretched. The foresail boom 48, which rests in a sheath at the foot edge`49 of the foresail, has at its front end a hook 5U, which is attached to yoke 5 of the bow pin 3. Hook 50 forms also an eye 5I for the foresail sheet 52 which, in addition to this, is attached to another eye at the rear end 53 of the boom, so that these two eyes are connected by means of the sheet. On this fixed part of the sheet there is arranged a movable stretcher 54, of rubber for instance, to which the rear end 55 of the sheet is attached after having passed down through an eye 56, formed on an elastic hook, which in its turn is Ithreaded on a lee-fang 51'. Lee-,fang 51 consists of a bent wire, which at its ends forms eyes 58, threaded on mast carrying pin 28. The eyes rest against the supporting frame so that the wire isheld stretched between the tubes I oi the frame.

When taking down the rig, the foresail can be rolled on its boomv together with the sheet, after the forestay has been loosened and taken out of the front edge sheath.

The boom 59 of mainsail 33 rests also in a sheath at the foot edge 6U of the mainsail and is at its front end tted with an eye 6I threaded on mast I8 and shaped of a wire, which, in addition ot this, is bent to form another eye 62. Through this eye 62 the fore end 63 of the mainsail sheet is threaded` and by means of a stretcher 64 adjustably fastened to a partv 65 of the mainsail sheet passing through an eye 66 at the top of a hook 61 attached to keel I1. Hook 61 is hooked into' a hole 68 on the keel. This part 65 is in its turn either fastened to stern pin 4 by means of a hook 69 and also threaded through the spiral-shaped part 10 of the spring on a clothes pin or similar 1I, or only threaded throughthe hook 61 and fastened to the clothes pin. This clothes pin`v is clamped around a' point on boom 59 of the mainsail, which is suitable' with regard toy sailing. conditions.v

Thev lmainsail can be rolled around its boom after the sheet has been taken oi the stern pin, and the keel hook off the keel.

The sails are shown sewed on strengthening ribs 8I of, for instance',v suitable plastic.

Fig. l0 shows, as already mentioned, the keel in its lowered position, as used when heating. The function of the keel is then tov move the centre of leeway resistance with the aid of the' wind pressure of thel mainsail. For Wind aft sailing thekeel is tov be pulled up, and at the same time the stern hook 69 of the mainsail sheet is loosened, so' that the mainsail swings out. The mainsail sheet 65 is thenno longer with its hook -61 influencing keel I1. Pulling up the keel' is effected by the following arrangement. In another hole in the keel, 687, there is a hook 12 attached.

f which at itsouter end forms an eye 13. On stern pin Ilv there is another hook 14', consisting of a wire first bent to U-shape, with one part of same, 115, bent to form a yoke 16, and at the free end bent to form an eye 11', which is fastened to eye 'I3 of keel hook 12. The other part is at its free end bent to form a catchl peg 19 in front of yoke 16?. When hook 14 rests on stern pin 4 with the upper part of its loop, hook 1'2 will not influence the keel.. If the hook is pulledr stern-wards past the bendY to yoke 16, whenI catch 19 prevents hooking orf and is released, the yokeis attached to stern pin r4 (Fig. 11). By this movement hook 'I2 is pulled sternwards and thus the keel to' the position shownV by dotted line 88 in Fig. 10. For lowering the keel, hook 14 can be easily returned to its previous position. As the keel has a row of holes 68, |68', for

hooks

61 and 12, trimming can be effected for various conditions. The ends of hook 61 may also have'backwardly bent catches to fasten the lifted keel to pin 4 or elsewhere.

tected material.

With regard to the material selected for various employed. The tubes of the supporting frame as well as the parts of the mast can be made of aluminium or some other rustproof or rust-pro- Shrouds, stays and hooks, eyes etc. as well as bow and stern pins, keel shaft and carrying pin for the mast can be made of stainless steel wire.

The centerboard, which can be swung in the plane of symmetry of the yacht, is a means for automatically keeping a given course in spite of f variations in wind pressure when sailing. Good course balance is also attained for the intensity vof -wind prevailing when sailing. Without complicated devices a previously not available possibility is obtained to change completely from beatf ing to sailing before the wind, and to manuvre from-tasking to wind aft sailing and vice versa,

by means of a simple manipulation, i. e. by moving hook 'l and changing over the mainsail.

What I claim is:

l. A model sailing yacht, comprising, a pair of inflated collapsible pontoons disposed in side by side spaced parallel relationship, a longitudinal frame member for each pontoon removably secured thereto adjacent each end, relatively rigid bow and stern cross members detachably connecting said frame members and said pontoons in spaced parallel relationship, a cross bar connecting said frame members intermediate the ends thereof, a keel mounted on said cross bar for fore and aft pivotal movement and extending below said pontoons, a second cross bar mounted on said frame members for movement in a fore and aft direction and forming a mast step, means to secure said second cross bar in adjusted position, a sectional mast stepped in said second cross bar, shrouds secured to an intermediate point on said mast and to said frame members, a foresail shroud secured to an intermediate point on said mast and to said bow cross member, a foresail supported by said foresail shroud and having a foresail boom received in a tubular portion adjacent the foot thereof, a, foresail sheet connected to said foresail boom and slidably connected to said second cross bar, means to adjust the length of said foresail sheet whereby said foresail may be trimmed, a mainsail having a tubular portion adjacent the peak thereof received over the upper section of said mast and supported thereby, a main boom received in a tubular portion at the foot of said mainsail, a main sheet detachably secured to said main boom for adjustment in a fore and aft direction and adjustable exible means connecting said mast, said keel and said main sheet whereby upon movement of said second cross bar said keel will be pivated in a fore or aft direction to balance said yacht and said mainsail will be trimmed.

2. A model sailing yacht as dened in claim 1 in which said frame members comprise sectional tubes and in which the parts may be disassembled, the pontoons deflated and folded, and the complete yacht packed in a relatively small space.

3. A model sailing yacht as defined in claim 1 in which additional means is provided to adjust said keel for sailing before the wind or on the wind, said means comprising a flexible member connected to said keel and a hook hav- Instead of vulportionsLv for engagingr said whereby said keel maybe ing two connecting stern cross member raised or lowered.

4. A model sailing yacht as defined-in claim l, in which the means to secure said second cross `bar v,in adjusted position comprises `a resilient ring received on each frame member on eachside ,ofsaid second cross bar.`

5. A model sailing yacht comprising a pair of pontoonsdisposed in side by side relationship, a

longitudinal frame member for each pontoon secured thereto adjacent each end, bow and stern Ycross members connecting said frame members and said pontoons in spaced parallel relationship, a cross bar connecting said frame members intermediate the ends thereof, a keel mounted on said cross bar for fore and aft pivotal movement and.. extending below said pontoons, a second cross bar mounted on said frame members for movementin a fore and aft direction and forming a mast step, means to secure said second cross bar in adjusted position, a mast stepped in said second cross bar, shrouds secured to. an intermediate point on said mast and to said frame members, a, foresail shroud securedto an intermediate point on saidmast and to'said bowcross member, a foresail supported by said foresail shroud and having a foresail boom received in a tubular portion adjacent the'foot thereof, a foresail sheet connected to said foresail boom and slidably connected to said second cross bar, means to adjustv the length of said foresail sheet whereby said foresail may be trimmed, a mainsail having a tubular portion adjacent the peak thereof received over the upper portion 'of said mast and supported'thereby, a main boom received 'in a tubular portion at thejfoot of said mainsail, a main sheet detachably secured to said main boom for adjustment in a fore and aft direction and adjustable flexible means connecting said mast, said keeland said main sheet whereby upon movement of said second cross bar said keel will be pivoted in a fore or aft direction to balance said yacht and said mainsail will be trimmed.

6. A model sailing yacht comprising a pair of pontoons disposed in side by side spaced parallel relationship, a longitudinal frame member for each pontoon secured thereto adjacent each end, bow and stern cross members connecting said frame members and said pontoons in spaced parallel relationship, a keel supported on said frame members for fore and aft pivotal movement and extending below said pontoons, a cross bar mounted on said frame members for movement in a fore and aft direction and forming a mast step, means to secure said cross bar in adjusted position, a mast stepped in said cross bar, shrouds secured to an intermediate point on said mast and to said frame members, a foresail shroud secured to an intermediate point on said mast and to said bow cross member, a foresail supported by said foresail shroud and having a foresail boom received in a tubular portion adjacent the foot thereof, a foresail sheet connected to said foresail boom, and slidably connected to said cross bar, means to adjust the length of said foresail sheet whereby said foresail may be trimmed, a mainsail having a tubular portion adjacent the peak thereof received over the upper portion of said mast and supported instable:

means connecting said mast, said keel and. said main` sheet whereby upon movement of said cross bar said keel will be pivoted. inA a Afore or aft direction to balance said yacht and said mainsail. will be trimmed'.

7l.Y A model` sailing yacht comprising a pair of pontoons disposedi inside by side spaced rela tionship, a longitudinal frame member for each pontoon secured thereto adjacent eachend, bow and stern cross members connecting said frame members and said pontoons in spaced relation ship, a keel supported on said frame members for fore and aftv pivotal movement and extending be- 'lOW Sad pOnbDOnS, a. crops bam mounted on said frame members for movement in a fore and aft direction and forming a mast step, means tosecure said cross bar in adjusted position, a mast stepped in saidv cross bar, shrouds secured to an intermediate point onsaid mast and to said frame members, a foresail shroud secured tol an intermediate point on said mast and to said bow cross member, a foresail supported by the said foresail shroud, a foresail sheet connected to said foresail and slidably connected to said cross bar, means to adjust the length of said foresail sheet `whereby said foresail may be trimmed, a mainsail supported by said mast, a main boom secured to said mainsail, a main sheetl detachab'ly secured to said main boom forY adjustment in a fore and aft direction and adjustable means connecting said mast, said keel, and said main sheet whereby up'on movement of' said cross bar said keel will be pivoted in a fore or' aft direction to balance said yacht and said mainsail will be trimmed.

8. A model sailing yacht comprising a pair of pontoons disposed in side by side relationship, a longitudinal frame member for each pontoon secured thereto adjacent each end, bow and stern cross members connecting said frame members and said pontoons in spaced relationship, a keel supported on. said frame members for fore and aft pivotal movement and extending below said pontoons, across bar mounted on said frame members for movement in a fore and aft direction and forming a mast step, means to secure said crossl bar.` in adjusted position, la mast stepped in said cross bar, shrouds secured to an intermediate point on said mast and to said frame members, a foresail shroud secured to an intermediate point on said mast and to said bow cross member, foresail supported by said foresail shroud, a foresail sheet connected to said foresail andslidabl'y connected to said cross bar, a mainsail.V supported by said mast, a main boom secured to said. mainsail, a main sneet detacha-bl'y securedv to said main boom and adjustable means connecting said mast, said keel and said main sheet whereby upon movement of said cross bar said keel will be pivoted in a fore or aft direction to balance said yacht and said mainsail will be trimmed.

VICTOR HENRI WALLENBERG.

REFERENCES CTED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 36,099" Mallory Aug. 5, 1862 189,459 Herreshoff Apr. 10, 1877 210,573 Spooner Dec. 3, 1878 1,336,226 Hart Apr. 6, 1920 1,449,274 Erickson Mar. 20, 1923 2,065,715 Leon Dec. 29, 1936 2,140,250 Schlumpf Dec. 13, 1938 2,351,542 Pauli` June 13, 1944 FOREIGN PATENTS Number Country Date 611,907 Germany Apr. 9, 1935