US2963176A

US2963176A - Boat rasier

Info

Publication number: US2963176A
Application number: US615154A
Authority: US
Inventors: John H Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-10-10
Filing date: 1956-10-10
Publication date: 1960-12-06
Anticipated expiration: 1977-12-06

Description

J. H. SMITH Dec. 6, 1960 BOAT RAISER 2 Sheets$heet 1 Filed Oct. 10, 1956 INVENTOR.

JO HN H. SM l TH CTR NEYS lz;

Y MM J. H. SMITH BOAT RAISER Dec. 6, 1960 Filed Oct. 10, 1956 2 Sheets-Sheet 2 INVENTOR.

J OHN H. SM ITH BY ZiT IORNEYS A United States Patent cc BOAT RAISER John H. Smith, Allen Park, Mich., assignor to Willard Smith Filed Oct. 10, 1956, Ser. No. 615,154

1 Claim. (Cl. 214-1) My invention relates to a new and useful improvement in a boat raiser adapted for mounting in the water at the shore or bank so that the boat may be moved over the raiser and the raising mechanism then operated to lift the boat clear of the water. In this way, the boat is, when not in use, raised to an elevation where the waves would not have access to the boat.

It is an object of the present invention to provide a boat raiser of this class which will be simple in structure, economical of manufacture, durable, compact, easily operated, and highly efficient in use.

Another object of the invention is to provide a boat raiser of this class having a pair of cradles which will serve to engage the bottom and the sides of the boat and which are provided with lifting arms which may be elevated to raise the boat clear of the water.

Another object of the invention is the provision in a mechanism of this class of boat engaging plates or pads which may be adjusted to conform to the contour of the boat and which may rock as the boat is raised from lowered to elevated position.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of the structure illustrated without departing from the invention and it is intended that the present disclosure shall be considered to be but the preferred embodiment.

Forming a part of this specification are drawings, in which:

Fig. 1 is a top plan view of the invention;

Fig. 2 is a side elevational view of the invention;

Fig. 3 is a front elevational view of the invention;

Fig. 4 is a side elevational view of a fragment of the invention.

As shown in the drawings, the invention comprises at its four corners supporting bases or feet projecting upwardly from each of which is a rod 9. At each end of the boat I provide a transverse grid composed of transverse tubes 11 and 12 which are connected by vertical cross bars 13, and having on each end a tube 17 which is adapted to slip over the rod 9 and which may be secured by the set-screw 17a. By adjusting the sleeve 17, the raising device may be adjusted so that the boat may be, when in raised position, at various positions of elevation.

Embracing each of the rods 9 and resting upon the upper end of the sleeve 17 is a tubular member 18. The tubular member 18 at corresponding opposite sides is connected by longitudinally directed

tubes

14 and 15, each of which are interconnected by vertical tubes 16. Secured at their lower ends to each of the upper tube and projecting upwardly therefrom are tubes 19. Extending longitudinally of the structure and secured to the upper ends of the tubes 19 on each side of the structure is a longitudinally directed tube 20, thus forming a framed enclosure into which the boat 96 may be moved.

At some of the upwardly extending tubes, I provide braces consisting of a tube 22 extending outwardly from 2,963, l Patented Dec. 6,1960

the tubes 20 and connected to the tubes 19 by the diagonally extending brace 23.

Between the

tubes

14 and 15 at the rear end is secured a plate 25 and a similar plate 26 is secured at the forward end. The plates 25 serve as a bearing for the tube 27. Fixedly secured to this tube 27 is an arm 28 connected at its end to the

bars

29 and 30 which project upwardly therefrom and having the spread apart portions 29a and 30a engaged by the bight or cross bar 31.

Bearing against the lower face of the cross bar 31 is a pad 32 which is fixedly mounted to a piston rod 33 extending upwardly from the piston 34 slidably mounted in the cylinder 35. The cylinder 35 communicates with a pump 37 operated by the handle 38 so that fluid may be forced into the cylinder 35 to move the piston 34 upwardly. This pump 35 rests upon a suitable platform 36 mounted on the longitudinally extending upper tube 20. The construction is such that upon movement of the piston 34 upwardly the member 27 may be rocked to the left of Fig. 1 or Fig. 2, the arm 28 being shown in dotted lines in its upwardly rocked position.

Positioned inwardly of the

tubes

14 and 15 and fixedly mounted on the tube 27 is an arm 38a which is engaged by a bar or link 39 to an arm 40 fixedly mounted on the tube 41 which is journaled in the plates 26. Secured to and projecting outwardly from the tube 41 are the tubes or

arms

42 and 43 in the ends of which is journaled a tube or rod 44. Embracing this tube or rod 44 are sleeves 45 and 45a which may be fixed longitudinally of the tube or rod 44 by means of the set-screws 46. Pivotally mounted at its lower edge, on the tube 45, is a plate or pad 48, and a similar plate or pad 47 is swingably connected at its lower edge, on the tube 45a. Secured to the lower face of each of the

pads

47 and 48 is a pair of spaced apart plates 49 which embrace the tube or rod 44 and each of which is provided with spaced apart openings 50 through which may be projected a bolt for limiting downward swinging movement, this bolt engaging the rod or tube 44. The

parts

45, 45a, 47, 48 and 49 comprise a swingable saddle.

Secured to and projecting outwardly from the tube 27, as shown in Fig. 1, are lifting arms 51 and 52 in the ends of which is journaled a rod or tube 53 corresponding to the member 44. Engaging

pads

54 and 55, similar to the

pads

47 and 48 and constructed in like manner, are carried by the tube or rod 53.

Pivotally mounted on the tube 44, between the tubes 45 and 45a, is a tube or collar 56 to which is fixedly mounted one end of the longitudinally extended tube or rod 57. The other end of the tube 57 is fixedly mounted on the tube or collar 58 which is pivotally mounted on the tube 53 in the same manner as the collar 56.

In operation, when the pads are lowered as shown in Fig. 1 or Fig. 2, and the boat 96 is moved into position, a movement of the piston rod 33 upwardly will effect a rocking of the

members

27 and 41, thus swinging the lifting

arms

42 and 43 and the lifting arms 51 and 52 upwardly so as to lift the boat 96 into the dotted line position shown in Fig. 2. The boat will remain in this elevated position until the hydraulic pressure in cylinder 35 is relieved in a well-known manner, whereupon the weight of the boat would move the mechanism to its lowered position.

It is believed obvious that the invention as described is constructed in a sturdy manner, while at the same time, it is light and may be easily and quickly operated.

What I claim is:

In a boat raising device of the class described the combination comprising: a structure having a pair of vertically extended rods at the forward end thereof; a pair of vertically extended rods at the rear end thereof; a base '3 on the lower end of each of said rods; transversely extended means for adjustably connecting together the rods at the forward end thereof; transversely extended means for adjustably connecting together the rods at the rear end thereof; a slidable member slidable upwardly and downwardly on each of said rods above said transversely extended means; longitudinally extended means for connecting together at one side of said structure the slidable members on the rearward and forward rods at the said one side of said structure; longitudinally extended means for connecting together the slidablemembers on the rearward and forward rods on the other side of said structure at the opposite ends; a plate mounted at the forward end of each of said longitudinally extended means for connecting said slidable members; a plate mounted on each of said longitudinally extended means for connecting: said slidable members at the rear end; a first rotatable member extended across the structure and rotatably supported by the plates at the forward end thereof; a second rotatable member extended across the structure and rotatably supported by the plates at the rear end thereof; a rigid arm projecting outwardly and upwardly from each of said rotatable members at one side of said structure; a bar hingedly connected at one end thereof to one of said rigid arms and at the other end thereof to the other of said rigid arms; a pair of spaced apart arms extending upwardly and forwardly from each of said rotatable members; a transverse rod pivotally mounted between the outer ends of each of said last named pair of arms on each rotatable member; a pair of spaced apart boat saddle pads slidably mounted on each of said transverse rods for sidewise adjustment thereon; means for adjusting the angularity of said pads; a longitudinally extended tube having one end thereof pivotally connected to one of said transverse rods between the pads thereon and the other end thereof pivotally connected to the other of said transverse rods between the pads thereon; and, hydraulic means for rocking said rotatable members in vunison with each other.

References Cited in the file of this patent UNITED STATES PATENTS 481,405 Kinipple Aug. 23, 1892 2,151,394 Rogers Mar; 21, 1939 2,201,147 Bary May 21, 1940 2,230,014 Raven Jan. 28, 1941 2,505,832 Lange May 2, 1950 2,585,664 Le May et a1. Feb. 12, 1952 2,599,670 Thomas June 10, 1952 2,712,874 Murray July 12, 1955