US520177A

US520177A - Anchor

Info

Publication number: US520177A
Authority: US
Publication date: 1894-05-22
Anticipated expiration: 1911-05-22

Description

(No Model.)

D. CLARK.

ANGHOR. 'No. 520,177. Patented May 22, 1894.

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UNITED STATES PATENT OFFICE.

DAVID CLARK, OF EASTON, PENNSYLYANIA.

A N C H O R.

SPECIFICATION formingpart of Letters Patent N 0. 520,177, dated May 22, 1894.

Application filed May 2'7, 1893. Serial No. 475,666. (No model.)

To aZZ whom it may concern.-

Be it known that 1, DAVID CLARK, a citizen of the United States, and a resident of Easton, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements in Anchors, of which the following is a specification.

My invention relates to anchors for large and small vessels and crafts of every description; and the object of my invention is to devise such a form of construction of the anchor, and such a combinationof the parts thereof that while possessing additional holding capacity, the danger of the flukes becoming fast in a rocky bottom, or otherwise, is to a large degree, if not'altogether, obviated, thus reducing to the minimum the danger of losing the anchor.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which like letters of reference indicate like parts in all of the figures.

Figure 1 is a perspective view of my new and improved anchor. .Fig. 2 is a plan view of the same; and Fig. 3 is a central sectional elevation, taken on line a; a: of Fig. l and illustrating in dotted lines the action of lifting when the main flukes of the anchor are locked in rock crevices or ledges.

The main anchor fiukes A A are by preferonce each constructed .with three fluke points a a a and with acentral tilting point bwhich latter serves to tip the anchor and prevent sliding which might otherwise occur on a smooth bottom. The main flukes A A are connected together by a shaft 0 on which they are free to turn to a limited extent.

They are also connected by an auxiliary rod c which passes loosely through aperture in the center of the anchor heads. This rod 0 serves to limit the pivotal movement of the anchor fiukes in this instance by the notched plates (Z cl of the shank D pivoted on the said shaft 0. here shown,'-*are formed with stop lugs, d cl which span the rod 0, and the distance be-' tween the said lugs determines the distance of pivotal movement of the flukes. The shank D has also a pivotal movement on the shaft 0, the distance of which is prescribed by the lugs (1' and shaft 0, as clearly illustrated in Fig. 1.

These plates, one or both-both as 13 represents a guide for the anchor chain C, which guide is by preference in the form of a loop or link as shown clearly in Fig. 3, so that the chain may slide along the guide on either side of the shank D. The guide B may be rigid but I prefer to pivot it by means of a block b on the shaft 0. It is held inline with the shank D by recesses e formed at the inner end of the shank, and the sides of the shank are by preference channeled as shown atfto form a clearance for the chain in sliding along the guides. I

g g are rings attached to the inner end of the shank D for use in casting off and lifting the bottom on the point bwhich will cause I catch. At this time, and at all times the vessel is at anchor, the anchor chain 0 will stand at the outer end of the guide B. In hoisting, if theflukes are free and readily detached from the bottom the chain will remain at said outer end of the guide; but in case the flukes become fast, the chain will slide along the shank as indicated in dotted lines in Fig. 3 V

and thus invert or trip the anchor and withdraw its vfiukes by a direct upward, or by a backward and upward movement, so that under no circumstances can the anchor become permanently fast in the bottom.

Having thus'described my invention, what Iclaim as new, and desire to secure by Letters Patent, is=

V 1. In an anchor, the two three-linked parts united by two rods or shafts and a shank pivoted on one of said rods and limited in its pivotal movement by the other rod combined with an anchor-chain guide which spans the said shank, substantially as described.

2. In an anchor the two threefluked parts and ashank pivoted on the front rod or shaft and limited in its pivotal movement by the other rod, combined with a pivoted chain guide which spans the said shank, substantially as described.

3. In an anchor the two three-fluked parts pivoted on and united by two rods or shafts and a shank pivoted on one of said rods, and

IO chor-chain guide B, which spans the shank and which is attached to a block b pivoted to the front rod or shaft, substantially as described.

Signed at Easton, in the county of Northampton and State of Pennsylvania, this 25th I5 day of May, A. D. 1893.

DAVID CLARK.

Witnesses:

G. STANLEY NEIMAN, ELLSW'ORTH D. VOGEL.