US2997188A

US2997188A - Load handling boats

Info

Publication number: US2997188A
Application number: US580679A
Authority: US
Inventors: Hauser Albert Herman
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-04-25
Filing date: 1956-04-25
Publication date: 1961-08-22
Anticipated expiration: 1978-08-22

Description

Aug. 22, 1961 A. H. HAusER LOAD HANDLING BOATS 2 Sheets-Sheet 1 Filed. April 25, 1956 INVENTOR. Albert H Hduser INVENTOR. A lb ert H Haas er 2 Sheets-Sheet 2 A H HAUSER LOAD HANDLING BOATS Aug. 22, 1961 Flled Aprll 25 1956 United States Patent 2,9s7,1ss LOAD HANDLING BOATS Albert Herman Hauser, 7 6 Hamlin Ave., Falmouth, Mass. Filed Apr. 25, 1956, Ser. No. 580,679 6 Claims. (Cl. 21415) (Granted under Title 35, U.S. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government of the United States for governmental purposes without the payment to me of any royalty thereon in accordance with the provisions of 35 U.S.C. 266.

This invention relates to improvements in load handling boats and more particularly to such boats in which the load handling takes place across the bow portion of the boat.

In the past many attempts have been made to provide multi-purpose load handling boats which would incorporate all the advantages that can be gained from the use of a boat as compared to a larger ship while avoiding the disadvantages of such a smaller floating structure. Such boats have included the use of extensible ramps and fixed hoisting posts to permit the dragging aboard of the loads to be handled by the boat.

It has even been contemplated to locate these ramps and fixed post loading aids to be used in conjunction with them in the stern of the boat but even this construction was not entirely satisfactory since it required the opening of a part of the hull and thus lowered the seaworthiness of the boat. At the same time the permanently braced hoisting posts, by being fixed in position, did not permit the shifting of loads from over the bow to the cockpit or cargo space. Further, the handling of the cargo with such stationary hoisting posts in conjunction With the movable ramp did not result in the most satisfactory handling of the loads since a certain amount of dragging aboard of such loads became inevitable.

The present invention overcomes these shortcomings by providing for the handling of loads across the bow of the boat without resort to a ramp or hull closure device. This is accomplished by providing a movable suspension point for the loads to be handled, such point being able to move from inboard to outboard while being under positive control at all times.

Accordingly, it is an object of this invention to provide a new and improved load handling boat in which the load is handled across the bow of the boat.

A further object of this invention is to provide a new and improved load handling boat in which the load is controlled from a movable suspension point capable of moving from inboard to outboard while being maintained under positive control at all times.

A still further object of this invention is to provide a new and improved load handling boat which is maneuverable about a vertical axis in the vicinity of the bow.

Other objects and advantages of the invention will become apparent during the course of the following description when read in conjunction with the accompanying drawings, wherein:

FIG. 1 is a perspective view of the forward portion of the bow loading boat, illustrating the bow bolster and the placement of the A frame in relation to the cargo space.

FIG. 2 is a side view of the entire bow loading boat showing the fore and aft limits of the pivoted A frame.

Referring now more particularly to the drawing, there is shown a boat incorporating the features of the invention. The boat It consists of a hull 11 having a -type bottom 12 which terminates in a square flat aft portion 13. The aft portion 13 of the hull '11 consists of a dead water rise section 1'4 and a flat stern section 15. The

rise section 14 and the stern section 15 are planar surfaces.

A skeg 16 extends rearward and is supported by a V- type strut 17. Theskeg 16 provides support for a rudder 18. The rudder 18 is journaled in the skeg 16 by means of a pintle (not shown) and is controlled from the inside of the hull in well known manner.

The construction of the hull 11 including its V-shaped bottom 12 assures a minimum resistance to sidewise movement by the stern section of the boat and permits the boat to be evenly swung about within a small radius. The hull construction further makes it'possible to turn the boat about an axis located in the vicinity of the bow. To obtain this desirable boat-handling characteristic, the dead water rise 14 and the flat stern section 15 extend, in the preferred embodiment, through a distance which is between one-quarter and one-third of the entire hull length.

A split main deck, consisting of

sides

21 and 22, is connected to the hull along its outboard edge. The inboard edges of the split

main deck sides

21, 22 are respectively connected by vertical bulkheads 2.3, 24 to the bottom 12 of the boat. A flat cargo bottom 25 may be positioned above the V-type bottom 12 in well known manner so as to provide a flat cargo handling platform above the hull of the boat.

The boat '10 has a bolster how 26. The rim 27 of the bolster bow 26 is of V-shaped form so that the drag wires can be guided on the apex of the V. The forward face 29 of the bolster 26 is blunt as shown in FIG. 2 while the rear portion of the bolster 26 terminates in a ramp 32 leading down to the well deck or cargo platform 25. The width of the bolster may be modified to suit the width of the boat as well as the type of cargo to be handled across the how. If it is desired to use the boat of this invention as a cable boat then a relatively narrow bolster may be adequate.

An A frame 33 having

legs

34 and 35 is pivotally connected through hinged

mountings

36 and 37, respectively, to the

sides

21 and 22 respectively, of the main deck.

A hydraulic cylinder 38 is mounted in a universal joint 39. The universal joint 39 is positioned above the main deck side 24 by a tripod support 41 which is attached to the main deck side'24. A shaft 42 connects the piston (not shown) of the hydraulic cylinder 38 to a pivot joint 43 of the A frame leg 35.

A hydraulic cylinder 45 is mounted in a universal joint 46. A tripod support 47 attached to the main deck side 21 positions the universal joint 46 above that main deck side. A shaft 48 connects the piston (not shown) of the hydraulic cylinder 45 to a pivot joint 49 of the A frame leg 34.

A hydraulic line 5-1 is attached to a forward port opening (not shown) of the hydraulic cylinder 38. A hydraulic line 52 is connected to a port opening (not shown) at the aft end of the hydraulic cylinder 38. Similar hydraulic lines 53 and 54 are attached to the forward and aft port openings (not shown) of the hydraulic cylinder 45.

A control valve (not shown) of conventional type is used to simultaneously control the flow of hydraulic fluid to the two hydraulic cylinders 38 and 45 so that the pivotable A frame 33 can be tilted forward or aft as desired. In the specific embodiment, the hydraulic pressure is derived from a pump driven by the main propulsion unit 55 located in the after engine space but any other well known source of hydraulic pressure may be utilized.

As a safety measure, the extreme forward travel of the pivoted A frame 33 is limited by

cables

56, 57, 58 and 59 which are connected between the

pivot joints

43 and 49, and the forward ends of the hydraulic cylinders 38 and 45.

A fair-lead block 61 is mounted through a bracket 62 to the vertex of the A frame 33. A hoisting wire 63 runs over the block 61 and terminates at its forward end in a cable clarnp 64. The cable clamp 64 has a slotted end pierced by a removable pin 65. A hook 66 may be attached to the cable clamp 65 through a universal ball joint 67. The hook 66 is attached to the cargo to be stored in the boat 10. It should, of course, be understood that other means of fastening the hoisting wire 63 to the cargo may be employed.

To permit the climbing of the A frame 3.3 for maintenance and operational purposes, foot supports 63 are attached at appropriate distances along the A frame leg 35.

A wheel house 69 is positioned above the cargo space and attached at its sides to the

main deck sides

21 and 22.

In operation, when cargo is to be loaded onto the boat the fairlead block 61 is extended over the bow 26 by tilting forward the A frame 33. A vertical purchase on the cargo to be loaded onto the boat is then obtained by means of the hoisting wire 63. The horizontal purchase on the cargo is obtained through the drag wire 28.

Wire 63 runs under a block 71 which is fastened to the boat 10 through a bracket 72.

Wires

28 and 63 pass through

appropriate openings

73 and 74, respectively, into the wheel house 69. In the wheel house 69 the

Wires

28 and 63 may be wound upon or unwound from appropriate drums, as is well known in the art.

The drag wire 28 is provided with a hook 75 which is connected to a cable clamp 76 at the end of the wire 28 through a universal ball joint 77.

The cargo is hoisted by taking up on the wire 63 until it is above the rim 27 of the bolster 26. The A frame 33 is then swung inward over the cargo space and the cargo may thereafter be shifted aft by shortening the drag wire 28, as desired.

While there has been shown and described an invention in connection with certain specific embodiments, it will, of course, be understood that it is not intended nor desired to be limited thereto since it is apparent that the principles herein disclosed are susceptible of numerous other applications and modifications may be made in the structural arrangement and in the instrumentalities employed without departing from the spirit and scope of this invention as set forth in the appended claims.

What is claimed is:

1. A load handling boat comprising a hull having a V-type bottom, said hull being full bodied forward and terminating in a square fiat aft, the aft portion of said hull having a dead water rise section and a flat stern section, said rise section and said stern section being planar surfaces, said hull having a bolster bow, a rudder, means for operating said rudder from inside said hull, a frame mounted pivotally to said hull, means interconnecting said frame and said hull for positively controlling the position of said frame, said frame being movable from inboard to outboard across said bolster bow, hoisting means connected to said frame, and a space in said boat positioned to receive loads from said hoisting means, said boat being maneuverable about an axis in the vicinity of said how so as to permit continuous bow loading of said boat under adverse wind and water current conditions.

2. A load handling boat comprising a hull having a V-type bottom, said hull being full bodied forward and terminating in a square flat aft, the aft portion of said hull having a dead water rise section and a flat stern section, said rise section and said stern section being planar surfaces, said hull having a bolster how, a main deck connected to said hull, a rudder, means for operating said rudder from inside said hull, a frame mounted pivotally to said main deck, means interconnecting said frame and said main deck for positively controlling the position of said frame, said frame being movable from inboard to outboard across said bolster bow, hoisting means connected to said frame, and a space in said boat positioned to receive loads from said hoisting means, said boat being maneuverable about an axis in the vicinity of said bow so as to permit continuous bow loading of said boat under adverse wind and Water current conditions.

3. A load handling boat comprising a hull having a V-type bottom, said hull being full bodied forward and terminating in a square flat aft, the aft portion of said hull having a dead water rise section and a flat stern section, said rise section and said stern section being planar surfaces, said hull having a bolster bow, a rudder, means for operating said rudder from inside said hull, a split main deck connected to said hull, an A frame mounted pivotally to said split main deck, the legs of said A frame being connected to the respective slides of said split main deck, means interconnecting said frame and said main deck for positively controlling the position of said frame, said frame being movable from inboard to outboard across said bolster bow, hoisting means connected to said frame, and a space in said boat positioned to receive loads from said hoisting means, said boat being maneuverable about an axis in the vicinity of said bow so as to permit continuous bow loading of said boat under adverse wind and water current conditions.

4. A load handling boat according to claim 1 in which said dead water rise section and said flat stern section extend through a distance which is between M1 and /3 of the length of the entire hull.

5. A load handling boat according to claim 2 in which said dead water rise section and said flat stern section extend through a distance which is between A and /3 of the length of the entire hull.

6. A load handling boat according to claim 3 in which said dead water rise section and said flat stern section extend through a distance which is between A and A of the length of the entire hull.

References Cited in the file of this patent UNITED STATES PATENTS 837,173 Yancey Nov. 27, 1906 893,642 Morch July 21, 1908 1,047,233 Jackson Dec. 17, 1912 2,341,866 Higgins Feb. 15, 1944 2,378,254 Swaney June 12, 1945 2,581,087 Eakin Jan. 1, 1952 2,772,789 Hussong et al. Dec. 4, 1956 FOREIGN PATENTS 10,072 Great Britain May 6, 1884 748,281 France Apr. 10, 1933 OTHER REFERENCES Knights Modern Seamanship, 5th edition, 1912, p. 213.