US75179A - Improvement in machine foe making plough-clevises - Google Patents

Description

T. MEIKLE.

Machine for Making Piow Clevises.

No.. 75,179. I Patented March 3, 1868.

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Letters Patent No. 75,179, dated ZlIarch 3, 1868.

IMPROVEMENT IN MACHINE FOR MAKING QPLOUGH'TGLEVISES;

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TO ALL WHOM IT MAY OQNOERN:

I Be it known that I, TnoMAs MEIKLE, of the city of Louisville, county of Jefierson, andiState of Kentucky, have invented a new and useful Improvement in the Art of Making Plough-Clevises, entitled Thomas Meiklcs PIough GleVis Machine; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the machine, reference being had to the accompanying drawings, and to the letters of reference markedthereon, to wit:

Figures 1 and 2 represent a perspective view of what is called the Oliver trip-hammer.

A is the .wooden block on which the machinery rests. T T are the treadle, on which the foot is placed, in order to strike the blow. B B are a cast-iron swage-block placed on the wooden block A, which is cast hollow, and into which the dies E andf are inserted by a projection on the under side of same, as seen in figs. 3 and 4. F is a gauge to hold the iron to its place while the hammer W strikes it. G is a cast-iron plate on which rest all the fixtures necessary for bending the clevis'es. a are two pieces or ribs running across the plate 0, which have a rebate in the inside, in which the slide-plateJ slides backwards andforwards, H H are two frames or levers attached to the slide-plate J by two bolts, and as the slide-plate J is moved in forward, so as to clear the rollers I I, they are thrown apart, so as to admit the clcvis to be laid into the machine, after which the slide-plate J is drawn backQby pressing down the lever O with the 'hand, which forces the forms H H up between the rollers I I, and hence bends the clevis 2 to the proper shape, (see clevis, marked 2 in fig. 2, which shows how the clevis is formed around the centrepiece R, which is permanently attached to the sliding plate'J.) P is a small set-screw for the purpose of being closed up against'the back of the clevis, in order to keep it from springing back in the'centre under the operntion of bending. I I are twostationary rollers, between which the levers or forms H H are drawn back for the purpose of bending the clevis. N N are the stands which receive the rock-shaft m, which connects to the slide-plate J by the connecting-link K,--and is moved backwards and forwards bythe lever 0. Z Z are the two upright pieces to which the-hammers W W are attached. III] are the cross-head, which receives the handle of the hammer. a a are a rod connecting by an arm with the cross-head u of the hammer, and running down to the treadles T T, in order to work the hammers WW. 6 bore a rod running from an arm on the crosshead U up to an imaginary spring at the iloor of the house above, but not shown in the drawings, for the purpose of raising 'the hammers when down. V Vere the handle of the hammer. e and f are the dies, which are attached to the face of the hammersW W by projections on the under side, as shown in figs. 3 and 5.

, Figures 3, 4, and are perspective views of the dies, showing how they are made, and how they are set into the swage-block and face of the hammers W W.

Figure 6 is a. view of the centre-piece R of theslide-plate J, which is attached permanently to the sliding plate J, and around which the clevis is bent.

The above is a. clear description of the drawings as referred to; and the above machine is made of iron, except the block A and the treadles 'l T, and is operated by placing the convex dies 0 and-f in the face of any ordinary triphamrner, and the concave dies. E andfin ,the-swzrge-block below, and when the hammer W is brought down the upper die fits neatly intothe die in the swage-block, except what space is taken up by the thickness of the iron used, which is flat iron, about one inch wide by five-six'teenths in thickness, and is cut oif in lengths snitablefor the clevises, after which it is heated in the middle and brought out and placed in the die f, and with one stroke of the hammer W the iron is bent to' a half circle by laying it lengthwise in the die, and a hole is punched through it at the same time by the punch K in the die, and 'after which there is a small piece of round iron, about two inches long and one-half inch indiameter, inserted in said hole and riveted fast, after which the clevis is returned to thefii'e again, and a welding heat is taken on the pin and that part of the clevis required, and after which it is brought out and placed'in the left-hand groove of the die E, and is there struck one blow by the die e, in hammer W, which closes the iron on the pin and weldsit fast, and rounds up that part of the clevis necessary to be rounded; after which it is placed in the right-hand groove of die E, with the pin downwards through the hole g, and is there struck one blow. with the die a, in hammer W, which rounds up perfectly that part of the clevis necessary to be rounded, and is now ready to be bent, and in order to do so it' 'isonly necessary to open the lovers or forms H H of the bending-machine, so that thc clevis can be laid in it,

and after having laid it in, after which itis only necessary to take hold of thelever O with the hand, and press it down, and in doing so the forms H H aro drawn up between the rollers I I, and hence bends the clevis 2 to the proper shape, as seen by the clevis 2 in the machine, on fig. 2, and after the clevis is formed itis only necessary to raise the lever O, which throws theforms H H out from between'the rollers I Land permits the clevis to be taken out.

The above is a full description of the operation of the maehine. New, therefore, I do not claim anything as original, or as my improvement in the construction of what is called .the Oliver trip-hammer, as described in the drawings, or as used in operating my improvement in the dies, and hence I have not made any model for that part of the machine, as said dies are to he used in the fade of any ordinary trip-hammer; but

What I do claim as my improvement, and desire tosecure by Letters Patent, is

1. The combination of the sliding plate J, having a fixed centre-piece, R, attached thereto, with the compressing-levers or jaws II, rollers I, screw P, and mechanism for operating the sliding plate, substantially as and for the purpose set forth.

2. The swages and-blocks constructed as described, for use successively in forming a flat iron har, so that the clevis may be completed by bending it in a machine fitted for that purpose, substantially in the manner I set forth.

THOMAS MEIKLE.

Witnesses:

' WM. 0. KAIsER,

B. H. Goss.

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