US1331095A - Process for making forged anchors - Google Patents

Description

T. l. CURRY. PROCESS FOR MAKING FORGED ANCHORS.

T. J. CURRY.

PROCESS FOR MAKING FORGED ANCHORS.

APPLICATION man JUNE H. 1919.

1,331,095. Peeented Feb.17,1920.

2 SHEETS-SHEET 2.

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THOMAS JAMES CURRY, GF NETHEETCN, NEAR DUDLEY, ENGLAND, ASSIGNOR TO N. HINGLEY it SNS. Ll'iTEl, OE DUDLEY, ENGLAND.

PROCESS EUR MAKING FOIRE-ED ANCI-ICES;

Application led June il To all ywlmi/t t may concern Be it known that LTrroims .latins UURRY, a` subject of the King of England, and residing at Netherton, near Dudley, in the county 'ofllVorcesteig England, have invented Iniprovements in and Connected with Processes for Making Forged ranchers, of which the following is a specification.

This invention relates to a process for making forged anchors from a single billet.

According to this invention, the anchor portion comprising the head proper, trippers, and arms or flukes are forged in one piece out of a single billet or body of malleable metal, generally steel, wherein the tripper parts forged from the billet or block are extensions of the head portion on which tne shank end is secured, and extend over the backs or outer edges of the arms or flukes, which spring from points under and separated from the tripper parts and extend in a downwardly curved manner.

ln the manufacture of a one-piece forged anchor, a hole is made in the center of the billet or bot y, say of oblong form, adapted to constitute the aperture in which the head of the shank works; and on each side of this hole, and some distance from it, the billet at each side is shouldered down at a certain point in the direction of length of the billet, and the parts outside the shouldered down portions constitute the parts of the forging which are to form the arms and fiukes. At each angle at the shouldered down parts, the metal of the billet or body is by hammering' or pressing. and by snitable tools, recessed down at each outside portion on each side, into comparatively thin plates, which parts are to form the trippers of the anchor.

On the outer side of the forging so far made, the portions which are to form the arms and flukes are set down to the depth er thickness of the trippers; and they are forged or pressed down all along on this side, the other side of the arm parts remaining flush or practically so with the inside face of the head portion proper which surrounds the hole.

Beyond the trippers the edges of the arms are forged or pressed down, and tapered to the tips, and at the end of these tapered parts, part of the metal is hammered or pressed out by suitable tools, to form comparatively thin plates on each yside which Specification ci Letters Patent.

Patented. Feb. 1 7, 1920.

Serial No. 303,516.

are to constitute the linkes or palms on the ends of the arms.

The forging is now severed between the tripper portions of the head, and the outer parts of the arms by sawing, milling, slotting otherwise, up to the head portion proper which surrounds the aperture, whichV may be of the full depth of the original billet or body; and each arm at the shoulder is heated by a separate lire or heating me* dium, while the head itself is kept cool, and a mandrel or part is passed through the aperture in the head, and the head is held in position thereby on a suitable holding bed or the like; and then while the arm parts are het, they are bent around, say by pulling up by a crane or otherwise, over a shaped former, which is held say by the mandrel, and which is en the outside of the usual curvature of the inside of the arms.

T his anchor head and fluke portion and its process of manufacture or forging is illustrated by the annexed drawings, which illustrate the various conditions of form produced by the several operations Yperformed upon it, these operations being done preferably in the order of the numerals of the ligures.

ln the drawings the Figures l to 11 represent the successive and various steps in carrying out the method of forming an anchor.

Fig. l shows the billet or block of metal with the first operation formed on it, namely, the swagingl of the shank hole l, which will be effected by suitable tools used for such forging operations.

Fig. 2 shows the billet or body after the next operation, which consists in'shouldering down the ends of the billet front points which are to form the extremity of the head of the anchor, that is the edges of the tripper portions of same; the metal displaced by this action being transferred in length of the parts 2 which are to form the arms or flukes, and their palms or tips.

Fig. 3 shows the metal after the next 0peration has been performed, which consists in recessing down the corners of the forging between the roots of the arm members 2, and the head portion 3. The metal thus pressed down and displaced takes the form of the eX- tended portions at each corner of the head. This operation may be inadef by V setting or other suitable tools; and these parts 4 form the tripper parts of the anchor.

As the metal pressed out by this latter operation may extend in a rounded manner, as indicated by the full lines in the ligure, the outer edges of theseparts will be cut off along the line 5X, so as to make the edges of the trippers square, but still projecting out beyond the sides of the head portion proper 3, as seen in the next ligure.

In the next operation the elongation of the arms or linkes 2 is effected, this being shown in Fig. 4. In this operation, from the inner angle of the recesses on the underside of the tripper parts 4L, the arm portions 2 are forged downward in a tapered manner shown in this ligure, and also they are set down as indicated in Fig. 5 at the back side,

'so that the upper side of the arms will then be in the same plane as the undersides of the trippers. The palms or tip portions 5 may then be forged to the form required.

The next operation is that of severing the tripper parts 4C from the arms or ilukes 2 by sawing or milling; the severing cut being marked 6 in Fig. 6. i

The arms are then heated by separate applications of heat as above described, on each side of the head proper 3 which is kept cool as stated; and then the main final operation is the bending of the arm portions 2 around into the shape required, of which Fig. 7 shows a suitable one.

Thus by this process and method, the whole head portion of the anchor, namely, the head proper 3, trippers 4, and arms or flukes 2 with their palms or tips 5,.are forged and made by a simple sequence of forging operations from a solid plain billet or body of malleable metal. 1

With regard to the actual sequence of operations employed in the manufacture of the anchor, it is to be stated that this may be varied somewhat-as will be understood by those skilled in the artand some of the operations transposed, without departing from the substance of the invention.

With regard to the securing of the shank head in the anchor head 3 proper, two known modes of connection are shown in Figs. 8 and 9, and Figs. 10 and l1, respectively.

In the case shown in Fig. 8 and 9, the connection of shank l0 and head 3 is by a pin 8 passing through the tops or roots of the llukes or arms 2, and the lower portion of 'the head 3; the pin being secured in position by nuts 9 screwing on to the lends of the same, and the nuts lying in cut out recesses, in the arm root portions.

In the case shown in Figs. 10 and ll, the pin 8 in the head, of the shank l0 lies in recesses at eac-h side of the hole l, extending down from the outer face of the head; and above the ends of the pin 8, caps l1, formed on the ends of vertical bolts l2, are fitted; and they are secured in position by nuts 13 screwing on the bolts on the inner side of the head 3. Y

It will be seen in the anchors shown in Figs. 8 toll, the arms or flukes 2 taper from wide roots next the head, to more or less thin tips; but they may be of any suitable shape. It will also be seen in these iigures, the angles of the lower part of the head 3 at each side of the aperture l (which is of the usual form used in this kind of anchor) are rounded; but they may be rectangular or of any required shape.

l/Vhat is claimed is l. The process of making a forged anchor from a single billet, consisting in forging the ends of same to produce extensions to form arms of less width than the original billet, forging' and indenting the metal at the angles between the extensions and the remaining portion of the original billet to reduce the thickness of said metal, the metal at these points to form tripper parts on each side of the arms, and subsequently separating said parts from the arms. Y

2. The process of making a forged anchor from a single billet, consisting in forging the ends of same to produce extensions to form arms of less width than the original billet, forging and indenting the metal at the angles between the extensions and the remaining portion of the original billet to reduce the thickness of said metal, the metal at these points to form tripper parts on each side of the arms, separating said part from the arms, and subsequently bending the arms to further separate the same from the trip-V per parts. .Y Y

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' THOMAS JAMES CURB-Y.

YVitnesses JAMES L.GRAINGER, SYDNEY G. DAvrEs.

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