US69080A - de foeest - Google Patents

Description

3 SheetsSheet 1..

T. B. DE FOREST. PORGING APPARATUS.

No. 69,080. Patented Sept. 24, 1867.

Rs co. wowummwAsm 3 Sheets-Sheet 2.

T. B. DE FOREST FORGING APPARATUS.

Patented Sept. 24, 1867.

MA I Illllllnl- M EN 3 Sheets-Sheet 3.

T. B. DE FOREST FORGING APPARATUS.

No. 69,080. Patented Sept. 24, 1867.

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THOMAS B. on FOREST; or BIRMINGHAM, oonnnerroo'n Letters Patent- No. 69,080, dated Seplemlier 24, 1867.

IMPROVED FORGING APPARATUS.

TO ALL WI-lOM IT CONCERN:

Be it known that I, .TnoMAs B. DnFonns'r, of Birminghnin, in the county of New Haven, and State of Connecticut, have invented n. how Improvement in Forging Machine; and I do hereby declare the following when takcn'in connection with the accompanying drawings and the letters of reference marked thereon, to be a. full, clear, and exact description of the same, and which said drawingsconstitute part of this specification, i :i.nd represent, i'n-,- Figure 1, a front view Figure 2, n rear view.v Figure 3, a side view and in Figures 4 to 10 inclusive, detached parts.

This invention relates 'to an improvement in machines. for forging, in which steam is thepower acting y directly to opcratcthe hammer, and designed more particularly for forging many successive like articles. i To enable others to construct and use my improvement. I will proceed to describe the samens illustrated inthe accompanying drawings. i i

A is thti bed-plate, upon ivhich is placed the frame B, which supports the mechanism of theimachinc; C and D are two steam-cylinders, setot right. angles to-each other in a vertical plane, and arranged upon the face or thc'frumc B, so thatjthe sins of each cylinder lies at'on angle 0t forty-five degrees from a. perpendiculhi', as denoted in the several figures. Within each of the said cylinders is arranged a. piston in the usual manner, to each of which is respectively attached o.hnmmer-hend, 'E and E, so thait by the admission of steam-to the cylinder below the piston, the piston will be raised, as denoted, ine t he cylinder G, fig'. 4, and upon the reverse of the steam the hammer will fall orbe forced down,- as denoted MD in said fig. 4.- The arrangementof the valves to thus operate the hummeris more clearly seenin fig. 9. F ise shnft supported in proper bearings G, and the said shaft caused to revolve by the'up'piication of power thereto through the pulley F, as seen in fig. 3. Upon the said shaft are ,arrauged tivo eccentrics, C and D, from which rods 0 and D extend up to levers C and 1)", working upon ful cra C and D, and to the said levers the valve rods C and D of the respective cylinders are attached, so that as the shaft F is caused to revolve, the valves of enehcylinder are alternately worltcd, usdenoted in diagram, fig. 9. Thus the valve motion which uctuetes" or causes the movement of the, hammer is entirely independent of the power which moves the hammer, steam being admitted to the steamehest through pipes 0 and D, and exhausted through pipes C and D The movement of the valves alternating according to the movement of their respective eccentrics, first one hammer is raised end then the other. The valve may if desired admit the steam above the piston to force down the hammer, as well on below to force it up. The anvil upon which each of the two hammers operates must be orronged so that its position b changed to present a face to each hammer. This'mey be done by two anvils arranged so that the one upon which the blow of one hammer has just been given recedes while the other advances to ro'ceive the blow of the second hammer, and: so on, alternntelyrecoding or advancing, or the anvil may be arranged so as to vibrate and properly present V a. face to receive the blow of each hammer. Thislasit method I prefer, and such Ihzzve'shon'mits operation being illustrated in fig. 4. I is the anvil, represented in fig. 4 detached, and shown in broken lincs fig. 1. It is arranged upon it shaft, 1, supported in a firm bearing, I, so 'as to vibrate beneath the face of the hammer-3,213 from the positiouin red to that in black, fig. '4', and vice versa, so that, thcdesccnding hamiuerwill strike squarely upon the face of the anvil, thus necessitating two faces, in each of which is placed a die, a and a, so thatthe hammer t E will strike upon the die. a',as denoted in red, and the hammer D will in its turn strike upon the die in, as denoted in bl ck, nnd the anvil is caused thus to vibrate by the action of nu eccentric, P, on the shaft F through the rod 1, connected-to the end of the shaft upon a crenk-pin, I, the-motion: of the said eccentric being only sufiicien'tto'give the required vibration to the anvil.- Steam is admitted to the cylinder at the'proper time by the operation of bell-crank levers H and H, which by their movement operate the valve-rods-H and H, to each of which is respectively attached a. valve, so that by the movement of the rods steam will be admitted to the respective stccm-ch'estm'in which are operated the valves upon the rods C and D to admit steam to the cylinders for' the operation of the hammers end when both lovers are at the sometime depressed, as denoted in red, fig. 2', both valves are simultaneously opened, and at an equal dietoncp, and the lovers are thus operatcdby a treadle, H, (see fig. 3,) passing under the bed-plate, from whicha connection, 11., extends to'an nrmyH and H of each of the let ers H and H, so that by depressing thetrcadle'the valve of both cylindersissimultaneously and equally opened, and thus opening, and the shaft F revolving to operate the valves C and D, the

' hammers are made to alternately strike upon the anvil. If at any tiine i t is desirable to begin or finish the work with either hammer, that is to say, if in any work to be performed it is necessary that the lust blow on blows be struck by one hammer, the connection from the-treadle to either of thc'lcvers H and H, as the case may he,- should be'changed so as to make the one shorter than the other, as to move the point of connection down tel). -Thercfore as the levers will be held up 'by their respective springs H"? and H one of the connections will be. shorter than the other; consequently the valvewith the shorter connection will be open before the other, and thus cause the operation of the hammer inthe cylinder to which steam is thus admitted before theother and so, when the steam is cut oil', it will be cut oil firsti'rom that cylinder having the longest. connection, and that cylinder being cut off its hammer will cease working, while the other will continue until its valve is permittedtoclose. The dies a and a in the anvil are fitted into a dovetailed seat in the anvil, as seen in fig. 4, and held by clamp-plates I and I in theisecurest possible manner, and by this arrangement, when it is required to remove or adjust the dies, it is simply required that the belt which binds the clamp-plate be looscne'd, and thus forms a most convenient as well as practically durablearrangement. The dies 6 in each ofthc hammers are secured by cutting a slot, (1, into each hammer, and forming a groove in the end of the hammer into which the dies are inserted, as seen in fig. 4, the said slot atiording sufiicient elasticity to bind the dies in place. The holding apparatus for presenting the work to the hammers is represented detached in fig. 8, and is attached to a swinging bar, J, hinged to the frame at J, and extending across the-frame in front of the anvils, is secured upon the 4 j, opposite side by a vertical bolt, J so that when the said bolt J is removed, the said bar may be swung open as 4 denoted in fig. 7. When in-operation, this bar is closed as denoted in fig. 1, and opens for convenience of getting at'the mechanism back of the said bar. To this bar is fixed a bracket, k, forming at its outer and inner end o. guide for a slidingplate, L. To the said sliding-plate L, at e, is pivoted a clamping lever, L, having upon 1 its lower end a tooth or tongue, f, which, when the lever L is turned up, as denoted inred, will bind firmly upon a metal bar upon the said slide, vor-when drawn back, asdenoted in black, permits the free movement ofthe bar on the said slide. The bar to be forged is placed upon the slide L and clamped with the lever L, the said leverscrving as a handle by which to move forward the slideL on to the anvil. As it is necessary that a given length of bar 'be inserted for the work to be performed, it is necessary that a gauge be arranged to act in combination with the slide L. L is such a guide, arranged upon theintcrnal end of a shaft, L supported in bearings g upon the bracket 7c, and from which an arm, L, extends up beneath an arm, L from the lever II, as seen in' figs. 8 and 10, so that when the lever L is pressed forward, as denoted in red, the gauge L will be depressed, as denoted in blue, fig. 7, coming down in front of the slide L, so that when the bar held upon the slide is pressed forward, its end will strike the gauge L y-then, releasing the clamp upon the bar so as to permit the gauge L to rise suliicient to allow the bar to pass under, the slide is moved forward to carry the bar in on to the'anvil for the operation of the hammers upon that portion of the bar allowed by such action of the gauge. After the operation of the hammers is completed the slide is drawn back and that part of the bar upon which the operationhas been performed is cut off, as hereafter described, the bar re-en-tered as before for another operation,- and so on so long as the bar retains the proper heat. The cutting-oh apparatus is seen in fig. 1, but more clearly in fig. 7. Upon the inside of the bar J, at P, are pivoted two hcads,P andP When in astute of rest they are in the position denoted in black, each of thcsaid two heads carrying a cutter, Pi, and are moved upon their bearing P, the one, P up, and the one, P, downward," to the positions denoted in red; the two cutters P passing each other as a. pair of shears, directly in front of the carrier, so that the two cutters cut oil from the bar the forged or finished piece, and then return to their state of rest, and they are thus moved by the operation of a. cam, R, on the shaft F, seen detached in figs. 5'and 5, and as seen in fig. 8, upon a slide, R, moving vertically in guides J on the bar J, the said slide having an arm, R projecting to one side so as to bear against the lower arm P of the head P, so that by the upward movement of the slide to the position in red, the head is turned to the position in red, while another projectionR, upon the slide, strikes upon the head P, and at the same time raises that to the position denoted in red. A stud, R fixed in the slide R resting upon the cam R, causes the slide to move with the oper'ation of the'cam. As this operation is required only at certain times, that only when the work is'iinished, it is necessary that the slide be disconnected from the cam'until the proper time of cutting of! the forged work, and at that time to present the stud by the action of the cam. This operation is illustrated in fig. 8. Thestud R isconstructed so that by a spring it is pressed forward to the position denoted in red. In thisposition the cam acts to raise the slide, but at that point in the cam when the slide has been raised, that is, to ,the point 2 in figs. 5 and 6, the face of the earn from that point to point 3 isinclined outward, so as to press against the end of the stud and force it back into the'position denoted in black. In that position it is held by a catch-pin, r, falling into a. notch or groove in the stud, as secn'in fig. 8, to prevent its return on to the cam. To introduce the. stud It -at the proper time, which is when the work is finished, a lever, S, having its fulcrum at c, is attached, onc arm to the catch-pin r and the other turned up as at S, so that by turning the said lever to the position denoted in red, the catch-pin is raised and the stud thrown out. When the work is finished the slide L is drawn back. To the under side of the slide L is pivoted'a finger, T, which when the slideis drawn back strikes the lever S, as denoted in black, and being drawn out a little further 'to the position-in red, raises the lever S and escapes therefrom; then the work is held in a proper position for the cutters to operate and cut from-the bar the finished piece, when the slide is returned or moved in, the tongue ,'1 turns upon its pivot, and passes freely over the lever S. This arrangement insures the operation oftlie cutters it: the proper time.

I Having thus fully (leseribe'd my invention; What I claim as new and-useful, and desire to secure by Letters Patent, is I 1. The hammers E and E projeeted from the pistons, and operated through. the medium of the steamoylinders O and D, arranged as described, in combination with a vibrating or receding nnvil, constructed and arranged so as to present a face to each hammer, substantially in the manner herein set forth.

2. The arrangement described for operating the cut-off valve rods H and H so as to adjust the operation of the hammer 01' hammers, substantially'as set forth.

3. The bar J in combination with and carrying thefeeding and butting-0H apparatus described, hinged to the 'fram'e so as to be turned from tbe anvil I, substantially as herein set forth i "4. The gauge L in combine tion with the feeding device, all constructed and operated substantially as and.

for the purpose specified] -5. In combination with the slide L and clamping-lever L, I claim the gauge L, arranged so as to be {operated by the movement of the lever U, substantially as described.

6. The combination of the two cutter-heads P and P with the sliiles R, and the stud R and cam R, constructed and arranged so as to operate substantially as set forth. 7

THOS B.-DE FOR-EST. Witnesses:

A. J. TIBBITS, JOHN H. SHUMwA-Y.

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