US561472A - Henry crompton ashlin - Google Patents

Description

(No Model.

H. '0 ASHLIN. CONSTRUCTION OF VESSELS.

No. 561,472. Patented June 2, 1896.

Mirna STATES HENRY OROMPTON ASHLIN, OF LONDON, ENGLAND.

CONSTRUCTION OF VESSELS.

SPECIFICATION forming part of Letters Patent No. 561 A72, dated June 2, 1896. Application filed 311116 5, 1893. Serial No. 476,665. (No model.) Patented in England May 7,1891,I T0. 7,91%

To aZZ whom it may concern.-

Be it known that I, HENRY CROMPTON ASH- LIN,21, subject of the Queen of England, residing at London, England, have invented certain new and useful Improvements in the Construction of Vessels, (for which I have ob tained Letters Patent in Great Britain, No. 7,914, dated May 7, 1891,) of which the following is a specification.

This invention relates to the construction of vessels, the object being toobtain the necessary freedom from rolling in the absence of the ordinary bar-keel without the use of bilgekeels, which are found to be an obstruction to speed and in other Ways objectionable; and my invention consists in the novel construction, arrangement, and combination of parts, as hereinafter fully described, illustrated in the drawing, and pointed out in the appended claim.

The said drawing is a part transverse section of the lowerpart of a vessel constructed according to my invention, the line y a representing the center line of the vessel.

I11 carrying out my invention I construct the vessel with a keel-plate that is without an ordinary keel, and upon such portion of the hull as may be desired I form any required number of longitudinal or fore and aft steps, which may act as keels. Thus for a distance of say one or two plates from the center line of the vessel the bottom would be flat and then would come an abrupt step of a few inches, then another flat, and then another step, and so on, for such distance as may be necessary or desirable.

The invention is particularly suitable for a ship having a cellular or double bottom.

In order that my invention may be more clearly understood, I will describe the same in detail, referring to the accompanying drawmg.

The steps in the same vessel may be of similar or dissimilar dimensions. It will be seen from the drawing that each of the steps is formed with a double angle-iron or Z-bar O, to the two horizontal flanges of which are riveted the two succeeding plates A D, or l) D, or D D and to the vertical portion of which is riveted the appropriate vertical plate E. The double angle-iron need not be all in one piece, but might consist of two single angleirons. ends to take the shape of the bow and stern of the vessel.

It is to be understood that the number, size, and arrangement of the before described steps may be varied to suit requirements, and Without departing from the spirit of the invention.

WVhat I claim is In a vessel, the combination With horizon tally-arranged plates arranged upon each side of the central line of the vessel and running longitudinally of the latter, of Z-shaped bars or double angle-irons having their horizontal portions secured to the adjacent edges of the said horizontal plates and vertical plates secured at their lower edges to the vertical portions of said Z-shaped bars or double angleirons, as and for the purpose specified.

In testimony whereof I have hereto set my hand in the presence of the two subscribing Witnesses.

HENRY OROMPTON ASHLIN.

\Vitnesses:

FRANCIS I'I. KENDALL, FREDK. STRIPLING.

The steps may be worked off at the-

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