US111144A - Improvement in anchors - Google Patents

Description

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entrino-Ru,

MARYLAND.

Letters Patent No. 111,144, daad January 24, 187i.

` IMPROVEMENT. 1N ANcHoRs.

The Schedule referred to in these Letters Patent and making parl: of the came, y

I, GURNEY- C. Pn'r'rison, of Baltimore inthe county of Baltimore and State of Maryland, have invented certain Improvements in Anchors, of which the following is a specification.

lj he rst part of m'y invention -relates to the use, in connection with a stock secured to the shank of an anchor, at or about its mid length, of an extended shackle pivoted to the upper end of .the shank, so as to swing, as usual, in either direction, this shackle being provided with a stop-bar to arrest its fall on. either side upon a line of inclination extending toward the endof the stock, the object of this part of my invention being to carry out the attached end of the cable so far toward the end of the stock as to greatly lessen theliability of an engagement or entanglement of the cable therewith. Y

The second part of mylin'vention relates to the use, in anchors carrying a pivotedor swinging duke-arm, oi' an auxiliary transverse pin or holt, inserted through the end of the shank outside of the pivot of the iiukearm, and parallel thereto, so that the lower or outer edge of the arm will strike against said bolt and bear thereon simultaneously withy the contact of its upper point with the side of' the shank, as illustrated in tig. 4 of the drawing, the Vobject of this part of my invention being, in the irst place, to relieve the pivot-bolt from the strain thereon when the anchor is in use, and in the next place to prevent a loss of the iiukearm in the event of abreakage or loss of thelpivotbolt.

The ends ofthe auxiliary bolt may-be used to hold a shackle to serve-in cet-ting the anchor.

Figure l of the accompanying drawing is a front elevation of my improved anchor;

Figure 2, a side view thereof;

Figure 3, a sectional view of my improved extended shackle, with a portion of the upper end of the shank;

and

Figure 4, a central section of a portion of the pivoted nuke-arm and lower end of the shank of the anchor, in line a: a; of fig. 2. y

A is the shank of my improved anchor, forged irr the usual manner.

B is the duke-arm, formed, constructed, and pivoted within a slot or recess in the lower end 0f the shank A, in the customary manner.

C, a bolt inserted through suitable apertures in the shank A, outside of the pivot-bolt of the duke-arm,

but parallel thereto, at such a distance therefrom,

with relation to the width of the duke-arm B, as that, when the fluke-arri) swings upon'its pivot ineither direction, ,its lower edge will strike against said lower bolt simultaneously with the contact o' its upper point with the side of the shank, as clearly illustrated in 4, thus affording a stay or support to the arm, which will serve to relieve its pivot-pin, in a" great measure, from the strain thereon when the anchor is engaged, and also a security against a loss of the ilukearm in case of a fracture or detachment of said pivot-pin. v l i Y o is a shackle secured to the lower end of the shank by means ofthe bolt C. Y

D is a curved rod or bar of round iron constituting the' stocky-of my improved anchor. It is inserted through a circular aperture pierced through the shank A, about midwayits length, at right angles to the fluke-arm, as illustrated in the drawing, and from its position may be made much shorter than in ordinary anchors, and yet produce the same eiect as the long stocks thereof. Its curved ends are turned upward, as shown in iig. l.

A shoulder, d, formed upon the bar arrests it when it has passed far enough through the shank, anda key and washer, c, on thev opposite side of the shank, secure it firmly in place. Y

By removing this key c the stock is readily detached from the shank to facilitate stowage.

This curved round-iron stock D is strengthened by means oi' a straight cross-rod, E, inserted through a second aperture in the shank A, and secured at either endfto` the ends of the stock, so as to form a chord to its arc, asfully illustrated in tig. l. y

The fastenings of this cross-rod are such as to p-r- -mit its easy disengagement for the purpose of detaching the stock from the anchor.

F is .an improved shackle, of au extended form, provided with a lower cross-bar, m., formed in such proximity to its 'pivot as that, when the 'shackle is Vt'urned down on either side ofthe shank, this bar will strike against the shank (see fig. 3) 'and support the shackle at anangle of inelieation which will cause its end to project ldownwardly toward the end of the stock, as shownin figs. l, 2, and 3.

l'By using this extended shackle and arresting its fall at the inclination given, the chain or cable seeured thereto is carried out so far from the shank toward the end of the stock, and is so heldras greatly to lessen the liability of its entanglement therewith.

The distance to be left between the pivot of the shackle and the lower cross-bar or stop m, must be determined by the width or thickness of the shank A, so as to obtain the desired contact of the cross-bar with said shank at the right point.

1. Au extended shackle, G, provided with an inner cross-bar or stop,/m, to arrest its movements, as herein described, and eoxnbined'with the shank A of 111,144 2 an yauchor, fitted with a stock about midway its out for'eug'agement, v11.11 substantially as herein set length, substantially in thel manner and for the pur.- forth. l pose herein set forth. Witness myxhand to this specification.'

2. An auxiliary bolt, C, inserted tlirollgh the end l G. O. PATTISON. of the `shank A of an anchor, outside of the pivot- Yvitnessesz.A n ,bolt holduglits fluke-arm B,and so combined with DAVID A.IBURR,.

the latter as to afford support thereto when thrown i Omas. REMPP.

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