US2821726A - Water skier launcher and retrieving apparatus - Google Patents

Description

WATER SKIER LAUNCHER AND RETRIEVING APPARATUS Fi1ed'June 15, 1956 Feb. 4, 1958 w. R. CORRELL 2 Shee'ts-Sheet l INVENTOR.

WELDON 12. QQRR LL.

ATTORNEY S United States Patent WATER SKIER LAUNCHER AND RETRIEVING APPARATUS Weldon R. Correll, Ellenshurg, Wash.

Application June 15, 1956, Serial No. 591,653

6 Claims. (Cl. 9-21) 'This invention relates generally to launching apparatus and is more particularly concerned with a novel water skier launching and retrieving apparatus from different type water craft.

The launching of a water skier or retrieving of the same on moving water craft is relatively hazardous and awkward tending to reduce the popularity of the sport. Some water craft are under powered making it rather difficult to start a water skier from a stand still position'on the bank of a body of water, for example. It is generally desirable to launch a water skier while the water craft is moving.

A primary object of invention is to provide novel water skiing launching and retrieving apparatus including means whereby a skier may be readily launched and retrieved with a minimum amount of effort and maximum etficiency and expediency.

A further object of invention in conformance with that set forth is to provide novel water skier launching and retrieving apparatus which includes a support member having means for mounting the same on the stern portion of a boat, said support member having pivotally secured for vertical pivotal movement toward and away from the surface of a body of water a launching platform, power means for pivoting the launching platform, winch means incorporating a tow line thereon, and support means for the tow line disposed in overlying pivotal relationship relative to the launching platform being simultaneously pivotal on the support member with the launching platform wherein the trailing end of the tow line incorporating a handle, if desired, will be disposed in an optimum position for engagement by a water skier, and upon lowering the trailing end of the launching platform toward the surface of the body of water the water skiers skis are automatically launched to the desired position for skiing.

And yet another object of invention in conformance with that set forth resides in specific details of construction of the various portions of the novel apparatus which combine to perform the desirable functions heretofore set forth.

And a still further object of invention in conformance with that set forth is to provide novel water skiing launching and retrieving apparatus which is readily and economically manufactured, easily installed and maintained, and highly satisfactory, safe and practical for the purpose intended.

These together with other objects and advantages which will subsequently become apparent reside in thedetails of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the novel launching and retrieving apparatus secured on a fragmentary rear end portion of a boat, showing in solid lines the position of the apparatus prior to launching a water skier, and in phantom lines the position assumed by the apparatus 2,821,726 Patented Feb. 4, 1958 when a water skier is launched, portions being broken away and shown in section for clarity;

Figure 2 is a top plan View of the novel apparatus;

Figure 3 is a rear elevational view of the novel apparatus, the handle for the trailing end of the tow line being removed for purposes of clarity;

Figure 4 is an enlarged fragmentary perspective view of a portion of the apparatus, showing a casing portion for an adjustable residual-drag assembly for the tow line of the apparatus;

Figure 5 is a sectional view taken substantially on line 55 of Figure 4; and

Figure 6 is a sectional view taken substantially on line 6-6 of Figure 5.

Referring to the drawing in detail, indicated at 10 is a fragmentary aft portion of a boat for towing a water skier, said boat including a rear vertically extendingtransverse stern portion 12 which may have a centraltransverse notch portion 14 opening into its upper edge.

The water ,skier'launcher and retrieving apparatus is indicated generally at 16 and includes asupport member 18, aski launching platform 20, power means 22 for vertically pivoting the launching platform as subsequent- 1y will be described indetail, awinch assembly 24, said winch assembly including atow line 26 having asuitable handle 28 secured on the trailing end for engagement by a skier, and tow line support means indicated generally at 30, the support member incorporating thereon an adjustable residual-drag assembly indicated generally at 32 for engagement with an intermediate portion of thetow line 26.

Thesupport member 18 includes transverse channel shapedbase member 34 which is received over the upper edge of thestern 12 of the boat within thenotch portion 14, saidbase member 34 having depending from a central portion a suitably securedsupport plate 36 juxtaposable' on the outer surface of thestem 12 of the boat, saidplate 36 including on its lower edge a suitably securedtransverse journal portion 38 for a purpose to subsequently become apparent. Extending vertically in spaced relationship from the upper surface of thebase member 34 are suitably securedsupport arms 40 and 42 which include rearwardly extendingupper end portions 44 and 46, respectively. Extending transversely between opposite inner surface portions of thesupport arms 40 and 42 is atransverse brace rod 48 which has suitably secured on a central portion thereof atubular end portion 50 of a forwardly extendingbrace plate 52, the other end of thebrace plate 52 being suitably secured as seen at 54 to atransverse brace member 56 secured at opposite ends in any suitable manner to oppositely disposed portions of the gunwales of the boat upon which the apparatus is mounted.

Extending transversely between lower intermediate portions of thesupport arms 40 and 42 is a suitably journaledsupport shaft 58 defining a horizontal pivot axis for theski launching platform 20. Theski launching platform 20 comprises a pair of parallel track-ways 60 and 62 comprised of elongated parallelstructural members 64 and 66, and 68 and 70, which have an L-shaped cross section, side flanges thereof being disposed in vertically extending relationship for receiving side edge portions ofwater skis 72 and 74 therebetween. Thestructural elements 64 and 66 have extending transversely between opposite forward end portions thereof abracket element 76 which may be longitudinally adjusted relative to the track-ways by means of a plurality oftransverse aperture portions 78 in thestructural members 64 and 66, see Figure 1, saidbracket elements 76 including vertically disposed downwardly directed hook end portion 80 which is engageable over the forward upper edge of a water ski also clearly seen in Figure 1. v.Thestructural members 68 and 70 have extending transversely. across the opposed forward end portions asimilar bracket element 76, see Figure 2. When the launching platform is lowered into the position shown by the phantom linesof Figure 1, the rear or trailing ends of the skis72 and-74 upon engaging the surface S of the body of water onto which the skier is to be launched will be caused to raise slightly tilting the skis from under the hook end portions 80 of thebracket elements 76 and thus as thetow line 26 is paid out the skis will be disposed on the surface of the water in a substantially angular position off the launching platform which is that position desirable when beingtowed through the water while participating in this sport.

The track-ways 60 and 62 have extending transversely below an intermediate portion of the'structur'al elements 64 :through 70 a suitably securedbrace rod 82 which has journaled about an intermediateportionthereofa sleeve member 84 integral with the upper end of a fluid cylinder 86 constituting a part of the power means 22 which consistsof an extensible fluidmotor. Thecylinder 86 has extending therefrom apiston rod 88 connected to a suitablepiston member disposed within the cylinder 86 (not sh'own),tthe lower end of thepiston rod 88 terminating in atransverse shaft portion 90 receivedinthejournal sleeve portion 38 previously described. {The cylinder.-86- is in communication with a suitable flexible pressure line'92, see Figure 1, which may be connected to a suita'ble pressure control source such as a manually operable pump assembly indicated generally at 94 which will include suitable valve means 96 for relieving the'pressuredeve'lo'p'ed thereby, thus by actuating the pump assemblyt-94 the piston rod may be extended as shown by the-solid linesin Figure 1 wherein thelaunching platform 20 will be disposed in a substantially horizontal'position, this position being that assumed by a skier prior to being launched-upon the surface of a body of water. Upon actuation of thecontrol valve assembly 96, thepistonro'd 88 will extend into the cylinder 86 whereafter the weight of a skier will cause thelaunching platform 20 to be disposed in the angular position shown by the phantom lines of Figure 1 whereafter the skier will be launched as previously described.

Thesupport arms 40 and 42 have extending transversely therebetween a suitably journaledsupport shaft 100 which has secured on an intermediate portion thereof thewinch assembly 24 which comprises asuitable reel member 102 about which thetow line 26 is convolutely disposed, one of the end portions of theshaft 100 having suitably secured'thereon an actuatingcrank 104 for dispensing and retrieving thetow line 26.

- Theupper end portions 44 and 46015 thesupport arms 40 and 42, respectively, have extending transversely through rear end portions thereof aligned apertured portions which have journaled therethrough suitably securedtrunnion portions 106 and 108 ofparallel leg portions 110 and 112, respectively, of aU-shaped bail member 114 of the tow line support means 30. The bight portion. 116 of thebail member 114 has depending from a central intermediate portion thereof a suitablysecuredpulley 'assembly 118 through which thetow line 26 is entrained for facilitating the paying out of the same from the, winch assembly. Pivotally connected at their upper ends bystub shaft elements 126 and 128, respectively,'secured on" a lower surface portion ofstructural elements 70 and 64 of the trackways, see Figure 3.

Extending transversely between theupper ends 44 and 46 of thesupport arms 40 and 42 isa suitably secured.

transverse support member 130 which has depending therefrom a suitably securedhousing member 132 of the ripheral engagement on opposite, sides of thetow line 26,

the outer surfaces of the friction wheels being comprised of a suitable resilientfriction increasing material 146.Yoke element 138 includes on its upperportion boss portion 148 which rotatably receives therein thecylindrical end portion 150 of an externally threaded adjustingscrew 152, said adjusting'screw being received in a threaded bore portionin thesupport member 130, see FigureS, the upper end portion of the adjustingscrew 152 extending through thesupport member 130 and hava ing secured-thereon anintegralhandle 154. Rotation of the-handle '-154,will accordingly dispose the yoke elements toward orfawayfrom each other thus adjust the clamping engagement of thefriction wheels 142 and 144 with respect to'dpposite sides of thetow line 26. This expedient is utilized for applyinga residual drag on the tow line when the same is'being payed out by the winch assembly, or when the tow line is being retrieved.

The manner of launching a water skier has been previou'sly described; and a, Wat r skier may be retrieved by lowering the-launchingplatform 20 utilizing the winch assembly=24"and tow'line-26 for-drawing the skiers skis upon the track-ways 60 and 62 whereafter the launching platform will ybe yraised to the substantially horizontal positionshown in Figure 1 by the solid lines.

. -It will be noted that the tow line support means 30 is simultaneously raised and lowered by virtue of theconnectinglinks 122 and 124, disposing thehandle 28 of the tow'line adjacent the hands of the skier, and when a skier is launched onto the surface of a body of water the tow'line'support means 30, will be angulated downwardly toward the surface of the body of water, this being a desirable p'os'ition obviating the tendency of a boat to turn over when making turns while towing a water skier. 'i'iyarioufpbsitional directional terms such as forward, rearflet e' utilized'herein to have only a relative canteen n t aid indescribing the device and it is not intended tore u ref a ny particular orientation with respect tq ivt ernal e e e he: foregoing is':considered as illustrative only of the principles'of theinve'ntion'. Further, since numerous moditications andphan ges willreadily occur to those skilled in the aiftj'it is not de'sired to'limit; the invention to the exact construction and operation shown and described, and accordin'gly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims. 7 a

What is claimed is 1. Water skier launching and retrieving apparatus comprising a supportmember including means for mounting the same in vertically extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support member for vertical pivotal movement of said platform about a horizontal axis, power means in engagement with the ski launching platform for pivoting the trailing end of the launching' pla'tfo'rm toward and away from the surface of a body of water for retrieving and launching water skis, a winch assemblyon said support member including a conv'olutely disposed tow line, tow line support means arranged-in spaced. overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is payed out and retrieved, and linkage means extending between the tow line support means and launching platform affording simultaneous vertical pivotal movement thereof.

2. Water skier launchingand retrieving apparatus comprising a support member including means for mounting the same in vertically extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support member for vertical pivotal movement of said platform about a horizontal axis, power means in engagement with the ski launching platform for pivoting the trailing end of the launching platform toward and away from the surface of a body of water for retrieving and launching water skis, a winch assembly on said support member including a convolutely disposed tow line, tow line support means arranged in spaced overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is payed out and retrieved, and linkage means extending between the tow line support means and launching platform affording simultaneous vertical pivotal movement thereof, the ski launching platform comprising a pair of parallel spaced track-ways for receiving water skis thereon, and means on a forward end portion of the track-ways for detachably engaging the leading end of skis when the launching of the same and releasing said skis when the launching platform is lowered.

3. Water skier launching and retrieving apparatus comprising a support member including means for mounting the same in vertically-extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support member for vertical pivotal movement of said platform about a horizontal axis, power means in engagement with the ski launching platform for pivoting the trailing end of the launching platform toward and away from the surface of a body of water for retrieving and launching water skis, a winch assembly on said support member including a convolutely dis-posed tow line, tow line support means arranged in spaced overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is paid out and retrieved, and linkage means extending between the tow line support means and launching platform affording simultaneous vertical pivotal movement thereof, said support member including a pair of spaced support arms, the Winch assembly extending transversely between the support arms, and an adjustable residual-drag assembly on the support member engageable with an intermediate portion of the tow line as it is payed out and retracted.

4. Water skier launching and retrieving apparatus comprising a support member including means for mounting the same in vertically extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support memher for vertical pivotal movement of said platform about a horizontal axis, a power means in engagement with the ski launching platform for pivoting the trailing end pf the launching platform toward and away from the surface of a body of water for retrieving and launching water skis, a winch assembly on said support member including a convolutely disposed tow line, tow line support means arranged in spaced overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is payed out and retrieved, and linkage means extending between the tow line support means and launching platform affording simultaneous vertical pivotal movement thereof, said power means comprising an extensible fluid motor assembly pivotally connected at one end to a horizontal pivot axis portion on the launching platform, means at the opposite end of the fluid motor assembly for pivotal connection to a lower rear portion of a boat stern, and control means for supplying power to said fluid motor assembly.

5. Water skier launching and retrieving apparatus comprising a support member including means for mounting the same in vertically extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support member for vertical pivotal movement of said platform about a horizontal axis, power means in engagement with the ski launching platform for pivoting the trailing end of the launching platform toward and away from the surface of a body of water for retrieving and launching water skis, a winch assembly on said support member including a convolutely disposed tow line, tow line support means arranged in spaced overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is payed out and retrieved, and linkage means extending between the tow line support means and launching platform affording simultaneous vertical pivotal movement thereof, said support member including a pair of spaced support arms, the winch assembly extending transversely between the support arms, and an adjustable residual-drag assembly on the support member engageable with an intermediate portion of the tow line as it is payed out and retracted, said tow line support means comprising a U-shaped bail member pivotally connected at end portions thereof to upper ends of the support arms, the journal means comprising a depending pulley assembly over which the tow line is entrained, the linkage means comprising elongated rigid link elements pivotally connected at opposite ends to overlying portions of the bail member and launching platform.

6. Water skier launching and retrieving apparatus comprising a support member including means for mounting the same in vertically extending relationship on the stern of a boat, a ski launching platform arranged in trailing relationship with respect to said support member and having one end pivotally mounted on said support member for vertical pivotal movement of said platform about a horizontal axis, power means in engagement with the ski launching platform for pivoting the trailing end of the launching platform toward and away from the surface of a body of water for retrieving and launching water skis, a winch assembly on said support member including a convolutely disposed tow line, tow line support means arranged in spaced overlying relationship with respect to said platform and having one end pivotally mounted on said support member for vertical pivotal movement of said tow support means about another horizontal axis, said tow line support means including journal means in engagement with an intermediate portion of the tow line as it is payed out and retrieved, linkage means extending between the tow line support means and launching plat- 2,521,73 "Joi opposite sides of the tow iine friction wheels journaled in the yoke elements in peripheral engagement with the opposite sides ofthe'f tow line, and an adjusting'screw extending through the housing member in engagement withone yoke element for urging the yoke elements'toward and away from clamping engagementwith the tow line as it is payed out and retracted from the winch as- ,s icstCiteq in thea r this patent. UNITED'STATES PATENTS 2,738,525 Roberts Mal-.20, 1956

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