US97342A - Improved anchoh - Google Patents

Description

@anni 'lill-w* ELI-SHAr TRASK BARLOW, OF SAN FRANCISCO, (fALlFORNIA.

' Letters Patent No. 97,342, dated Novembm 30, 186S..-

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IMPRVED ANCHOR.

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The Schedule referred to in these Letters Patent and making part of the same.

-To all 'whom itflnay concern:

shank, for the prpose of assuming the propel' posi tion for taking hold of the ground; and

It consists in constructing the arms or flukes in two separate parts, and attaching them to distinct and separate crown-pieces.

The anchor is provided with two shanks, moving parallel to each other, to one end of which the crown pieces, with their respective linkes, are attached, being bolted to each shank, so4 that the opposite longitudinal movement of the shankswill cause the tlukes to move from side to side, to the proper position for layin r hold of the ground.

lo the opposite end of the shanks are attached metal plates, which are bolted, one on each side, similar to the crown-pieces, and parallel to them, to the centre of which the chain or cable, which connects the anchor with the ship, is attached, so that, by drawing upon the cable, whichever shank happens to lie uppermostv will be drawn forward, thus turnng'thoI linkes downward to the holding-position.

In order to better explain the construction and arrangement 0f my anchor, reference is had. to the accompanying drawings, forming` apart oi this 'specifica tion, in which- Fignre 1 is a perspective view ot' my invention.

A and Ay are'the two arms or linkes of a ships anchor, cach arm being made, of separate pieces of iron, oi' the entire size required, and bent to the required sweep or angle.

`Each of these arms is secured firmly to a crownpiece, B. y 4

These crown-pieces are plates or bars of metal of :the exact size required, the particular shape and form of which are not material.

The shank consists of two bars, plates, or pieces of Inet-al, (l G, placed close together, and parallel to each other. y

lt is necessary, to the proper working ot' the anchor, that these pieces of metal C, which form a double shank, shall be of equal length and thickness; and I prefer making the pieces of greater width than thickness, in order to reduce the weight oi' metal in thc anchor, as well asl to gain aigreater purchase-in oper- .ating the tlukes, which will be hereafter further cxplained.

Both ends of each of these parallel shanks are provided with a slot, a, cnt transversely to the length oi' the shank, and ot' a length suitable for allowing the shanks to turn to the holding-position.

The crown-pieces B, to which thellukes are attached, are sccu'red to one end of these double shanks, one being placed on each side,as shown, and the whole secured together hy means of bolts, winch pass through the crownepieccs and slots, n, in the Shanks, thus binding the whole together. V

1f it is desired to have the shanks work closely together at all times, the slots are made of suilicient length to allow the Shanks to lie in contact when the crown-pieces arc'standing in a posit-ion at right angles or transversely to them, and a metal strap,y d, is secured to one of' the shanks, so as to clasp the other, as shown.

To the frontend of the shanks, and on each side, are attached metal bars or pla-tes I), which are also 'secured to them through the slots (l, similar tothe attachment of the crown-pieces, and moving simultaneously with and parallel to them at all times.

To this end of the shank, the cham or cable, which connects the anchor with the ship, is attached, so as to operate the dukes, a bolt, b, passing through the cent-re, from side to side, to each end oi' which is attached the shackle or elevis E, towhich the chain or cable is attached.

At the head ofthe anchor is a strong metal staple, F, the ends of which are firmly lixcd, one in each of the crown-pieces B, so as to protect the anchor, in lowering, from being injured hy coming in contact with a rock or other solid substance, and which holds the crown-pieces firmly in place when the strain is on the anchor. It also serves as a means of securing the an chor to the cathead when notl in use.

The ends ot' the shanksrare, in the present drawi ings, -shown as slightly enlarged. This, in practice, is very essential, as the shoulders thus formed serve as lugs or toggles, for tripping the anchor. v

lVhen this anchor-is let go from the ships side, and is descending through the water, the linkes will generally stand'in the'same plane with the shanks, as the weight of the anchor is suspended from the central bolt b, which allows the Shanks to hang evenly; but, when the 'anchor has reached the bottom, and the strain of the ship has come upon the cable, the shank winch lies uppermost will be drawn forward, while the lower shank will remain stationary, thus turning the linkes to the holding-position. Shanks causing the crown-pieces to turn so as to stand at an angle to them, this will be the case at all times, no difference winch side ofthe anchor lies uppermost. This arrangement ofthe parts of an anchor is mostl complete, as the lukes are always governed by the strain on the cable, and can by` no possibility become The movement ot' the' detached from its position when oncle it is set inthe ground, unless a vertical strain should be brought to hear upon it, or the anchor should be turned over by the movements of the ship, in which case it will immediately take hold again, in the same manner as above described.

In raising thc anchor after the cable has been suiciently taken up to give' a vertical strain upon the cable, the shackle E will be lifted, thus moving the upper shank back until it has released the linkes from their hold, when the anchor will he found to be free, and ready to be drawn up.

An anchor of this construction will be sntlicient-ly strong in all its parts, when made of the propel' proportions, to hold the largest vessels, and that ou any kind of a bottom, as there is no chance for it to drag, as every strain on the cable will induce an effort in the anchor to take hohl, while it presents no projections or prominent parts nponwhich the cable can .become fouled.

Having thus described my invention,

move the dukes to the4 proper position for taking hold of the ground, substantially as herein set forth.

In witness'whercof, I have hereunto set my hand and seal.

ELISHATRASK BARLOVV. [n s.]

Witnesses:

GEO. H. STRONG, JOHN L. BOONE.

which, by their opposite longitudinal movement, shall'

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