US3005207A - Swimming pool - Google Patents

Swimming pool Download PDF

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Publication number
US3005207A
US3005207A US78654759A US3005207A US 3005207 A US3005207 A US 3005207A US 78654759 A US78654759 A US 78654759A US 3005207 A US3005207 A US 3005207A
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Prior art keywords
chamber
pool
portion
paddle
wave
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Matrai Miklos
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Matrai Miklos
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00Swimming or splash baths or pools
    • E04H4/0006Devices for producing waves in swimming pools

Description

M. MA1-RAI 3,005,207

SWIMMING POOL.

2 Sheets-Sheet 1 Oct. 24, 1961 Filed Jan. 15, 1959 Om wm Nm mm INVENTOR. Miklos Murai M. MATRAI SWIMMING POOL Oct. 24, 1961 2 Sheets-Sheet 2 Filed Jan. l5, 1959 FIG.4

FIG.5

INVENTOR. Miklos Matrei 3,005,207 l a SWG- POGL Miklos Matrei, 330 Vine Ave. NE., Warren, Ohio Filed Jan. 13, 1959, Ser. No. 786,547 t 9 Claims. (Cl. 4172) 'I'his invention relates to swimming pools, and more particularly to a specially constructedV swimming pool having means `for' producing simulated ocean waves therein.

Much of the enjoyment derived from ocean swimming is derived from the wave action of the ocean, whereas in ya conventional Swimmingpool, the water is relatively fcalrn and offers no -enjoyment'whichmight otherwise be derived if waves were present. it ris, therefore, of primary `concern in connection with thisinvention to provide V.aV swimming pool assemblage which has associated there- ,with means for producing a wave action in the water .of the pool and which simulates, as accurately as possiof ocean waves along the length of the pool from the Ydeep toward the shallow end thereof. 1

A further` object of this invention is to provide a wave making device for swimming pools which incorporates a recess or chamber at one en d of a poolhousing a swing- 'able paddle therewithin which oscillatesback'and forth within the chamber and thereby produces a wave action emanating from the mouth of .the chamberwhich opens upon and into the pool, there being a jettyprojecting centrally outwardly from the chamber to control the wave action and prevent interference between the chamber openings on the opposite sidesof the jetty.A

With the above and'other` objects in view, this invention consists in the construction and novel combination and arrangement of parts` hereinafter' fully described, illustrated in the accompanying drawings and pointed' out in theclaims hereto appended, it being understood that various changes in the form, proportions, and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacri` icing any of the advantages of the invention. `In the drawings: Y a

FIG. 1 is al plan view of a swimming poolconstructed in accordance with this invention and illustrating the 'extent and `shape of the jetty associated therewith;

f *FIGQZ is a longitudinal section, taken through the pool shown in FIG. '1, and illustrating the sloped bottom wall and lthe `disposition of the wave making chamber as well asv the machinery associated with the paddle assem'bly;

1 l FIG. 3 `is` a plan view of the'wave making chamber -with `portions thereof ybroken away and illustrating the paddle in three positions therewithin; Y J FIG. 4 is an elevational view showing the wave making chamber and the machinery chamber immediately thereabove; and-V g FIG. 5'is a horizontal section, taken through the machinery chamber and showing the mechanism for driving 'the paddle.

Referring at thiis-time more particularly to FlGS. 1 'and 2, `the `swimming pool will `be seen `to include op posite sid-e walls and 11, an end wall 13 and a wall Iassembly at the opposite end indicated generally by the reference character 14. The bottom wall of the pool,

3,ilil5,207

Patented Get. 24, 1961 which slopes gently downwardly from the end wall 13 toward the opposite end wall assembly 14 and there is a secondary portion of the bottom wall 16 which slopes rather abruptly to the wall 14 immediately adjacent such wall and for a purpose which will be presently apparent.

The slope of the two sections 15 and 16 is such that `with the proper amount of water contained within the pool, the water line will substantially intersect with the bottom wall portion 15 at its yupper extremity where the steps 17 commence `and which extend therefrom up to thetupper surface of the end wall 13. It is to be noted that the walls 1t), 11, 13 and 14 are preferably of substantial width so as to provide a walk-way completely around the pool.

y.at the deepest end of the pool, it is preferred that the greatest depth is approximately six feet and the side walls 10 and 11 at this `point are preferably approximately two to two and one-half times the water depth at this point. Hand rails 13 and 19 are employed along the inner faces and side walls 10 and 11 approximately at the water line and one or more entrance ladders 2t) and 21 may be provided at convenient points in the pool to gain access to the interior thereof.

The wall assemblage 14 has at least two hollow portions 22 and 23 which form respectively a machinery chamber and a wave making chamber. The latter chamber 23 is in lthe form of a recess which opens directly into the pool Vneath the water level and-the two openings of this chamber are protected by grating or grills 25 and 26, see particularly FIG. 4.

An opstanding jetty 27 is provided to form the two openingsrfrom the wave making chamber 23 and this jetty projects forwardly from the inner wall 23 of the wall assembly 14- along the longitudinal center line of the pool and is connected to the abruptly sloped bottom Wall portion 16 `and terminates within the area of this secondary sloped portion 16. Ascanbe -best seen in FIG.'3, the wave making charn- -ber or recess 23 is of semi-circular shape and located within this recess is a paddle 30 having at one end thereofa vertical shaft extension 31 and aligned therewith a. depending shaft extension 32, see particularly PIG. 2, with the extension 32 being received within a bearing 33 set into the bottom wall 34 of the chamber 23 and with therebeing a further bushing or bearing 35 journalling the upper shaft extension 31. This `latter bushing or bearing 35 is set into the wall`36 Vwhich forms simultaneously the bottom wall for the machinery chamber 23 and the top wall of the wave making chamber 23. The mechanism indicated generally by the reference character 37 effects an oscillatory motion to the paddle 30 so that the same moves between the full line position shown in FIG. 3 to the dotted line position shown in that same figure and displaced from the full line position. FIG. 3 also shows a central position of the paddle.

The mechanism for effecting the wave motion to the paddle is shown most clearly in FIG. 5 and will be seen tol` include an electric motor 40 having a drive shaft 41 upon which a gear 42 is mounted. A countershaft 43 is mounted in bearings d'4 and 45 on the wall portion 36 and has a gear 46 tlxed thereto which is in mesh with the gear 42. One extremity of the countershaft 43 carries a wheel 47 having an eccentrically located .pin 48 there,- on which is connected to a link or rod 4 9 by means of a swivel joint Si), the opposite extremity of this link being `connected by means of a swivel joint 51 to one end of a rack -bar 52. The rack bar 52 is mounted for reciprocatory motion by means` of a pair of spaced guides 53 and 54 and the rack bar includes the teeth 55 meshing with a gear So'iixedto a vertical shaft 57 suitably journalled.

The upper extremity of the shaft 57 carries a sprocket wheel 58 operating in conjunction with a chain 59 and a further sprocket wheel 60 fixed to the upper end of the shaft extension 31 with the various gear ratios between the rack 55 and gear `56 and the sprocket and chain conneotion such that the full 180 of travel or oscillation of the paddle is effected.

It is to be noted that the wave making chamber 23 is located at the deepest end of the pool and that the bottom wall 34 thereof merges smoothly with the secondary inclined bottom wall portion 16 of the pool itself. By virtue of this arrangement, a wave action is very effectively produced, the water acted upon by the paddle 30 being discharged from the chamber 23 to impinge against the slope 16 which directs it upwardly towards the surface of the pool and then the water passes over the juncture between the two slopes and 16 and with the lesser slope 15 permitting the wave action to progress longitudinally of the pool. In other words, the initial slope 16 tends to direct the water towards the surface in upward fashion to produce a good wave height and then the longer more gentle slope 15 permits the waves formed to gain length and to thereby simulate very effectively a normal ocean wave action. In this manner, waves of a considerable height may be produced.

As this invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, the present embodiment is therefore illustrative and not restrictive, and since the scope of the invention is defined by the appended claims, all changes that fall the metes and bounds of the claims or that form their functional as well as oonjointly cooperative equivalents are therefore intended to be embraced by those claims.

I claim:

l. A swimming pool of the character described cornpris-ing confining side and end walls, said pool having a bottom wall including first and second portions, said rst portion originating at one end wall and sloping downwardly gently therefrom toward the opposite end wall Aand said second portion origina-ting at the opposite end wall and sloping upwardly therefrom to merge with said primary portion and being sloped more abruptly than such primary portion, a wave chamber formed in said opposite end wall and opening into the pool and having a bottom merging smoothly with the origin of said second portion of the bottom wall, said opening having a vertical dimension which is a major portion of the height of the wave chamber and said opening extending a major portion of the length of said opposite end wall, means in said chamber for displacing water forcefully therefrom to impinge against said second portion of the bottom wall and being deflected upwardly thereby toward the surface of water in the pool whereby to propogate waves in the pool, said chamber being of semi-circular shape having its diametrical portion contained within the plane of said opposite end wall and said means comprising a vertically disposed rectangular paddle having vertical pivot means at one end thereof pivotally mounting the paddle for rotation about the center of curvature of said chamber, said paddle being slightly less in size than the generatrix of said wave chamber, there being means for oscillating said paddle to sweep back and forth within said chamber, the last mentioned means comprising an electric motor, a countershaft driven from said electric motor and having a wheel tixed thereon, a pin xed to said wheel eccentrically thereof, a rack slidably guided for reciprocatory motion and being connected to said pin by means of a link, andv a gear train from said rack to said pivot shaft of the paddle for oscillating the same through approximately 180 of arc.

2. AA wave-producing swimming pool assembly comprising a, pool having confining side and end walls and a sloping bottom wall, said bottom wall including a primary portion sloping downwardly from one end wal-1 toward the opposite end wall and a secondary portion immediately adjacent said opposite end wall which is sloped downwardly more abruptly than the primary portion, a wave chamber at said opposite end of the pool opening into the same at the level of said bottom wall, said opening having a vertical dimension which is a major portion of the height of the wave chamber and said opening extending a major portion of the length of said opposite end wall, and means in said chamber for forcefully displacing water thereform for initial impingement against said secondary portion of the bottom wall, said wave chamber being of semi-circular configuration having its diametrical portion contained the plane of said opposite end wall and said means comprising a generally rectangular paddle having a vertical pivot at one end pivotally mounting the paddle about the center of curvature of the semi-circular chamber, said paddle being slightly less in size than the generatrix of said wave chamber, there being means for oscillating said paddle to sweep back and forth within said chamber, the last mentioned means comprising an electric motor, a countershaft driven from said electric motor and having a wheel fixed thereon, a pin xed to said wheel eccentrically thereof, a rack slidably guided for reciprocatory motion and being connected to said pin by means of a link, and a gear train from said' rack to said pivot shaft of the paddle `for oscillating the same through approximately of arc.

3. A wave-producing swimming pool comprising confining side and end walls and a bottom wall, one end wall having a wave chamber formed therein of semicircular contiguration having its diametncal portion contained within the plane of said one end wall and opening into the bottom of the pool, said opening having a vertical dimension which is a major portion of the height of the wave chamber and said opening extending a major portion of the length of said opposite end wall, a rectangular paddle having a vertical pivot shaft at one end pivotally mounting the paddle for oscillation about the center of curvature of said semi-circular chamber, said paddle being slightly less in size than the generatrix of said wave chamber, means mounted in saidv one end wall above said chamber for driving said paddle in oscillatory fashion through an arc of approximately 180 within said chamber.

4. A wave-producing swimming pool comprising contining side and end walls and a bottom wall, one end wall having a wave chamber formed therein of semicircular conguration having its diametrical portion contained within the plane of said one end wall and opening into the bottom of the pool, said opening having a vertical dimension which is a major portion of the height of the wave chamber and said opening extending a major portion of the length of said opposite end wall, a rectangular paddle having a vertical pivot shaft at one end pivotally mounting the paddle for oscillation about the center of curvature of said semi-circular chamber, said paddle being slightly less in size than the generatrix of said wave chamber, means mounted in said one end wall above said chamber for driving said paddle in oscillatory fashion through an arc of approximately 180 within said chamber, said means for Oscillating said paddle back and forth within the chamber comprising an electric motor, a countershaft driven from said electric motor and having a wheel fixed thereon, a pin fixed to said wheel eccentrically thereof, a rack slidably guided for reciprocatory motion and being connected to said pin by means of a link, and a gear train from said rack to said pivot shaft of the paddle for oscillating the same through approximately 180 of arc.

5. A wave-producing swimming pool assembly comiprising a pool having confining side and end walls and a sloping bottom wall, said bottom wall including a primary portion sloping downwardly from one end wall toward the opposite end wall and a. secondary portion immediately adjacent said opposite end wall which is sloped downwardly more abruptly than the primary portion, a wave chamber `at said opposite end of the pool opening into the same at the level of said bottom wall, and means in said chamber for forcefully displacing water therefrom for initial impingement against said secondary portion of the bottom Wall, said wave chamber being of semi-cylindrical configuration having its diamem'cal portion contained within the plane of said opposite end wall, said opening having a vertical dimension which is a major portion of the height oft the wave chamber and said opening extending a major portion of the length of said opposite end wall, the lower wall of said wave chamber being substantially at the level of the pool bottom at the opposite end wall, said means comprising a generally rectangular paddle having a vertical pivot at one end pivotally mount-ing the paddle about the center of curvature of the semi-cylindrical chamber, said paddle being slightly less in size than generatrix of said wave chamber, and mechanism for oscillating the paddle to sweep back and forth in said chamber about said pivot.

6. A swimming pool of the character described comprising coniining side and end walls, said pool having a bottom wall including first and second portions, said iirst portion originating at one end wall and sloping gently downwardly therefrom toward the opposite end wall, said second portion originating at the opposite end wall and sloping upwardly therefrom to merge with said rst portion, said second portion having a greater slope than said first portion, said second portion extending a minor portion of the distance between said one end wall and said opposite end wall, a wave chamber comprising a recess formed in said opposite end wall, said recess extending substantially the width of the pool, said wave chamber having a bottom merging smoothly with the portion of said second portion of the bottom wall adjacent to said opposite end wall, la jetty extending upwardly from said second portion of the bottom wall substantially above said recess, said jetty extending from said opposite end wall along a central portion of the pool toward said one end wall and terminating within the area of said second wall portion to dene two openings `froml said wave chamber, and means within said chamber for alternately displacing water forcefully from one or the other of said openings to impinge against said second portion of the lbottom wall to be deflected upwardly toward the Surface of the water in the pool to propagate waves in the pool, said jetty preventing interference between water entering or leaving said openings on opposite sides of the jetty.

7. A swimming pool as defined in claim 6, wherein the depth of said pool at the shallowest portion thereof is approximately one-half the depth of the pool at the deepest portion thereof.

8. A swimming pool as defined is claim 6, wherein the side walls are of a height at the deepest portion of the pool approximately twice the depth of the water in the pool.

9. A swimming pool as defined in claim 6, wherein said wave chamber is substantially semi-cylindrical in configuration having its diametrical portion containedwithin the plane of said opposite end wall, said means for alternately displacing water forcefully from one or the other of said openings comprising a generally reotangular paddle having a vertical pivot at one end pivotally mounting the paddle about the center of curvature of the semi-cylindrical chamber, said paddle being slightly less -in size than the generatrix of said wave chamber, and mechanism for oscillating the paddle to sweep back and Aforth in said chamber about said pivot.

References Cited in the file of this patent UNITED STATES PATENTS 586,983 Wharton July 27, 1897 1,181,406 Potter May 2, 19-16 1,505,756 Wagner Aug. 19, 1924 2,002,043 Price May 21, 1935 2,644,677 'Simon July 7, 1953 FOREIGN PATENTS 732,583 Germany Mar. 5, 1943

US3005207A 1959-01-13 1959-01-13 Swimming pool Expired - Lifetime US3005207A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287967A (en) * 1962-11-26 1966-11-29 Laurent Jean Wave propagating apparatus
US3427662A (en) * 1966-03-16 1969-02-18 Jacuzzi Bros Inc Swimming pool construction
US3473334A (en) * 1968-06-24 1969-10-21 Phillip Dexter Apparatus and method for producing waves
US3693195A (en) * 1970-07-20 1972-09-26 George E Richard Apparatus for surf generation
US3913332A (en) * 1973-08-30 1975-10-21 Arnold H Forsman Continuous wave surfing facility
US4276664A (en) * 1979-01-30 1981-07-07 Baker William H Apparatus for wave-making
US4276661A (en) * 1979-01-30 1981-07-07 Baker William H Wave-making apparatus
US4467483A (en) * 1982-10-08 1984-08-28 Ecopool Design Limited Pneumatic wave generator
US4558474A (en) * 1982-10-08 1985-12-17 Ecopool Design Limited Wave generator
EP0293831A1 (en) * 1987-06-01 1988-12-07 Nippon Kokan Kabushiki Kaisha Wave making apparatus
US5171101A (en) * 1987-05-27 1992-12-15 Light Wave, Ltd. Surfing-wave generators
US5236280A (en) * 1987-05-27 1993-08-17 Blade Loch, Inc. Method and apparatus for improving sheet flow water rides
US5271692A (en) * 1987-05-27 1993-12-21 Light Wave, Ltd. Method and apparatus for a sheet flow water ride in a single container
US5401117A (en) * 1987-05-27 1995-03-28 Lochtefeld; Thomas J. Method and apparatus for containerless sheet flow water rides
US5421782A (en) * 1990-08-15 1995-06-06 Light Wave, Inc. Action river water attraction
US5628584A (en) * 1990-09-04 1997-05-13 Lochtefeld; Thomas J. Method and apparatus for containerless sheet flow water rides
US5667445A (en) * 1988-12-19 1997-09-16 Light Wave Ltd. Jet river rapids water attraction
US5766082A (en) * 1993-05-20 1998-06-16 Lochtefeld; Thomas J. Wave river water attraction
US6460201B1 (en) 2000-11-16 2002-10-08 Thomas J. Lochtefeld Method and apparatus for controlling break points and reducing rip currents in wave pools
US6928670B2 (en) 2001-12-17 2005-08-16 Light Wave Ltd. Moving reef wave generator
US20090169305A1 (en) * 2007-11-13 2009-07-02 Lochtefeld Thomas J Method and apparatus for varying water flow for stationary sheet flow water rides
US20100000014A1 (en) * 2008-05-28 2010-01-07 Lochtefeld Thomas J Wave pool with moving reef wave generator extension and counter current
US7950875B2 (en) 2007-05-24 2011-05-31 Benham Roger A Water feature device
US9144727B2 (en) 2012-02-03 2015-09-29 Thomas J. Lochtefeld Method and apparatus for adjusting and stabilizing a wave generator traveling through a body of water
US9463390B2 (en) 2013-10-30 2016-10-11 FlowriderSurf, Ltd. Inflatable surfing apparatus and method
US9982448B2 (en) 2016-02-08 2018-05-29 Phillip James Fricano Articulated plow

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US202043A (en) * 1878-04-02 Improvement in adjustable carriage-tops
US586983A (en) * 1897-07-27 Amusement apparatus
US1181406A (en) * 1913-09-22 1916-05-02 Bayocean Natatorium Company Bathing appliance.
US1505756A (en) * 1924-08-19 Bathing pool
DE732583C (en) * 1941-01-21 1943-03-05 Leo Krause Drive of vibratory weirs for Wellenbaeder
US2644677A (en) * 1949-07-26 1953-07-07 Simon Hans Leopold Means for agitating liquids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US202043A (en) * 1878-04-02 Improvement in adjustable carriage-tops
US586983A (en) * 1897-07-27 Amusement apparatus
US1505756A (en) * 1924-08-19 Bathing pool
US1181406A (en) * 1913-09-22 1916-05-02 Bayocean Natatorium Company Bathing appliance.
DE732583C (en) * 1941-01-21 1943-03-05 Leo Krause Drive of vibratory weirs for Wellenbaeder
US2644677A (en) * 1949-07-26 1953-07-07 Simon Hans Leopold Means for agitating liquids

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287967A (en) * 1962-11-26 1966-11-29 Laurent Jean Wave propagating apparatus
US3427662A (en) * 1966-03-16 1969-02-18 Jacuzzi Bros Inc Swimming pool construction
US3473334A (en) * 1968-06-24 1969-10-21 Phillip Dexter Apparatus and method for producing waves
US3693195A (en) * 1970-07-20 1972-09-26 George E Richard Apparatus for surf generation
US3913332A (en) * 1973-08-30 1975-10-21 Arnold H Forsman Continuous wave surfing facility
US4276664A (en) * 1979-01-30 1981-07-07 Baker William H Apparatus for wave-making
US4276661A (en) * 1979-01-30 1981-07-07 Baker William H Wave-making apparatus
US4467483A (en) * 1982-10-08 1984-08-28 Ecopool Design Limited Pneumatic wave generator
US4558474A (en) * 1982-10-08 1985-12-17 Ecopool Design Limited Wave generator
US5171101A (en) * 1987-05-27 1992-12-15 Light Wave, Ltd. Surfing-wave generators
US5236280A (en) * 1987-05-27 1993-08-17 Blade Loch, Inc. Method and apparatus for improving sheet flow water rides
US5271692A (en) * 1987-05-27 1993-12-21 Light Wave, Ltd. Method and apparatus for a sheet flow water ride in a single container
US5401117A (en) * 1987-05-27 1995-03-28 Lochtefeld; Thomas J. Method and apparatus for containerless sheet flow water rides
EP0293831A1 (en) * 1987-06-01 1988-12-07 Nippon Kokan Kabushiki Kaisha Wave making apparatus
US5667445A (en) * 1988-12-19 1997-09-16 Light Wave Ltd. Jet river rapids water attraction
US5421782A (en) * 1990-08-15 1995-06-06 Light Wave, Inc. Action river water attraction
US20050047869A1 (en) * 1990-09-04 2005-03-03 Lochtefeld Thomas J. Containerless sheet flow water ride
US5628584A (en) * 1990-09-04 1997-05-13 Lochtefeld; Thomas J. Method and apparatus for containerless sheet flow water rides
US5899633A (en) * 1990-09-04 1999-05-04 Lochtefeld; Thomas J. Method and apparatus for containerless sheet flow water rides
US6319137B1 (en) 1990-09-04 2001-11-20 Light Wave, Ltd. Containerless sheet flow water ride
US7666104B2 (en) 1990-09-04 2010-02-23 Light Wave, Ltd. Water ride attraction
US6716107B2 (en) 1990-09-04 2004-04-06 Light Wave, Ltd. Containerless sheet flow water ride
US5766082A (en) * 1993-05-20 1998-06-16 Lochtefeld; Thomas J. Wave river water attraction
US6738992B2 (en) 2000-11-16 2004-05-25 Thomas J. Lochtefeld Method and apparatus for controlling break points and reducing rip currents in wave pools
US6460201B1 (en) 2000-11-16 2002-10-08 Thomas J. Lochtefeld Method and apparatus for controlling break points and reducing rip currents in wave pools
US6928670B2 (en) 2001-12-17 2005-08-16 Light Wave Ltd. Moving reef wave generator
US20050286976A1 (en) * 2001-12-17 2005-12-29 Lochtefeld Thomas J Moving reef wave generator
US7950875B2 (en) 2007-05-24 2011-05-31 Benham Roger A Water feature device
US20090169305A1 (en) * 2007-11-13 2009-07-02 Lochtefeld Thomas J Method and apparatus for varying water flow for stationary sheet flow water rides
US20100000014A1 (en) * 2008-05-28 2010-01-07 Lochtefeld Thomas J Wave pool with moving reef wave generator extension and counter current
US8496403B2 (en) 2008-05-28 2013-07-30 Thomas J. Lochtefeld Wave pool with moving reef wave generator extension and counter current
US9144727B2 (en) 2012-02-03 2015-09-29 Thomas J. Lochtefeld Method and apparatus for adjusting and stabilizing a wave generator traveling through a body of water
US9463390B2 (en) 2013-10-30 2016-10-11 FlowriderSurf, Ltd. Inflatable surfing apparatus and method
US9982448B2 (en) 2016-02-08 2018-05-29 Phillip James Fricano Articulated plow

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