US2543654A

US2543654A - Ship's bow construction

Info

Publication number: US2543654A
Application number: US737877A
Authority: US
Inventors: Oscar J Baggerud
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-28
Filing date: 1947-03-28
Publication date: 1951-02-27
Anticipated expiration: 1968-02-27

Description

Feb. 27, 1951 BAG ERUD 2,543,654

SHIPS BOW CONSTRUCTION Filed March 28, 1947 Patented Feb. 27, 1951 UNITED STATE TENT OFFICE 2,543,654 SHIPS BOW CONSTRUCTION Oscar J. Baggerud, Jersey City, N. J. Application March 28, 1947, Serial No. 737,877

1 Claim. 1

This invention relates to the manufacture of a ships bow as applied to an existing ship, and my primary object is to reduce the cost of such manufacture as compared with the cost of fitting in a new bow as hitherto made by cutting off the bow of the ship and replacing it with a new one of longer length in order to increase the speed. of the ship.

A second object of my invention is to obtain additional safety in the ship by the addition of the new bow.

A third object of my invention is to provide a bow of a soft construction so as to minimize the danger of a collision without endangering the safety of the ship.

According to the present invention the ships bow is left intact and a new separate bow is made up and welded or riveted to the fore part of the ship. Thus the new bow, which may be termed a false or dummy bow, will form a second skin the length of this bow. The skin of the original bow-part of the ship will then serve as a collision bulkhead, thus increasing the safety of the ship. The structure and shell plating of the new bow can be lighter than are required in a ship or a new bow of the ordinary construction.

The gain in speed may not, in many cases, be worth the expenditure requ red for the ordinary bow construction, while with the present invention advantage can be taken of the increase in speed afforded by a better designed bow. Furthermore the additional cubic capacity gained in an ordinary bow construction can not be fully utilized for a heavy load, consequently the false bow is no disadvantage in this respect.

lhe invention is illustrated in the accompanying drawing forming a part of this specification, where Figure 1 is an elevation of the bow, attached to the ship, looking to port. I

Figure 2 is a plan View of the bow and part of the ship.

Figure 3 is an enlarged view showing details of construction.

In Figure 1 the numeral l indicates the stem of the ship in its original form, 2 indicates the stem or bent plate in the new bow, 3 is the baseline of the ship and 4 and 5 are the second and upper deck lines respectively. The shell plating 5 is shown with horizontal welding or riveting seams i, but may be arranged in any fashion. Vertical seams are not shown. The aft end of the new bowplating is welded or riveted to the shell of the ship, port and starboard, as shown by line 8 on the starboard side. The bow may be built up in the yard and then transferred and fitted to the ship. In order to be able to weld the structure to the ship in the narrow space between the two skins, it will be necessary to leave off sections of the plating 9. It will then be possible for a man to gain access between the frames II! for welding. While frames are required throughout the length of the bow as in any ship, these are shown in the opening of the removed plate sections 9 only, and in one dotted line extending the height of the bow, in order not to complicate the drawing.

Figure 2 shows the top contour of the ford part of the ship and of the new bow. Line I2 is the centerline of the ship.

Figure 3 shows the frames l0, which may be angles or any other sectional shape, and members l l which may be bars, plates, profilirons, or built up shapes welded or riveted to the frames and shell of the ship. I2 is the centerline of the ship. Decks may be extended into the new bow space and this space inside may be utilized in any suitable manner desired. Reinforcement construction may be applied in any suitable manner desired.

The shape of the bow is not restricted to any definite form, but may be of any design, and various changes in the internal construction of the bow may be resorted to without departing from the spirit of my invention or the scope of the subjoined claim:

Having thus described my invention I claim:

In remodeling the hull of an existing ship having a sea-contacting bow provided with a keel, a stem, external shell plating and internal. frames; the improvement which consists in permanently and immovably securing to such an original complete bow, externally of the latter, a forwardly extending added fore part enclosing such original bow from keel. todeck and constituting an integral part of the remodeled hull, said added fore part having its own deck, stem, internal bracing and external shell plating merging with the shell platin of the original hull at the point of tangency between them and forming watertight joints therewith, whereby the thus added fore part becomes an inherent component permanent part of the remodeled hull, the shell plating on such added fore part extending rearwardly from said second named stem on both sides of said hull and terminating in edges that engage plating adjacent said access openings and within the second-mentioned shell plating, and se- Number curing plating sectlons over said access opemngs. 384 593 OSCAR J. BAGGERUD. 5 1535,155

REFERENCES CITED Number The following references are of record in the 12 480 file of this patent: 236 125 4 UNITED STATES PATENTS Name Date Schiller June 12, 1888 Hay Apr. 12, 1925 FOREIGN PATENTS Country Date Great Britain June 15, 1899 Great Britain July 2, 1925