US460882A

US460882A - neyeg-old

Info

Publication number: US460882A
Authority: US
Publication date: 1891-10-06
Anticipated expiration: 1908-10-06

Description

(No Model.) 2 Sheets--Sheet 1.

F. NEVEGOLD.

METAL ROLLING MILL AND FLATTENING AND EDGING ROLLS THEREFOR. I

No. 460,882. Patent-ed Oct. 6, 1891.

(No Model.) 2 Sheets-Sheet 2.

F. NEVEGOLD..

METAL ROLLING MILL AND FLATTENING AND EDGING ROLLS THEREFOR. No. 460,882. Patented Oct. 6, 1891.

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FRED NEVEGOLD, OF COLUMBIA, PENNSYLVANIA.

METAL-ROLLING MILL AND FLATTENING AND EDGING ROLLS THEREFOR.

SPECIFICATION forming part of Letters Patent No. 460,882, dated October 6, 1891.

Application filed March 3, 1891- Serial No. 383,545. (No model.)

To all whom it may concern:

Be it known that I, FRED NEvEeoLD, of Columbia, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in MetalRolling Mills and Flattening and Edging Rolls Therefor; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification, in which.

Figure 1 is a front elevation of my improved metal-rolling mill. Fig. 2 is a side view thereof. Fig. 3 is a vertical sectional view. Fig. 4 is a detail. Fig. 5 is a diagrammatical view illustrating the reduction of a bar in rolling.

My present invention is an improvement in metal-rolling mills and in the flattening and edging rolls thereof; and its object is to thoroughly work and compress the metal equally and on sides during the rolling thereof and to so construct a pair of rolls that they Will draw in a rod or bar of metal of larger crosssectional area or greater diameters, both vertical and lateral, than the reducing-openings between the rolls; or, in other words, will compress the bar in rolling both laterally and vertically on all sides.

Another object of the invention is to con.- struct the rolls without grooves, thereby lessening the cost of making and finishing the rolls, and to make the rolls in each pair alike or use duplicate rolls to make a pair.

Another object is to so make the rolls that they can be adjusted toward or from each other, so that they can be used for rolling and delivering bars of different thicknesses or of any cross-sectional area varying from a cube to a skelp.

Another object is to provide improved means for preventing the longitudinal displacement or separation of the rolls by the wedging force of the incoming metal during the rolling thereof and to strengthen the frame or housing of the rolls.

These objects I attain by the novel construction of the rolls and of the housings, as Will be hereinafter clearly described and claimed.

Referring to the drawings by letters, A B designate the upper and lower rolls, which are similarin form, butare set oppositely each other. Roll A has a shaft 0.. Near one end journal thereof is formed an enlargement or flange C, adjoining which is a second flange of larger diameter D, and adjoining flange D is a third flange E, of yet greater diameter. The roll might therefore be described as a deep angularly-stepped cone. Roll B has similarly-formed flanges C D E. It is set below roll A and opposite thereto, so that flanges E and C, D and D, and O and E of the respective rolls are opposite each other, and the faces of flanges E and D are opposed to and partially lap the faces of flanges D E,

res ectivelv as shown thus formin a closed reducing-opening Z between the rolls, the top and bottom of Which are formed by the peripheries of flanges D D and the sides thereof by the sides of flanges E and E. Now it will be seen from the drawings that the flanges are of such depth that the rolls can be adjusted toward or from each other to flat or to edge the metal, or so as to almost make the faces of flanges D D meet, thus making opening Z of greater width than height, or the rolls can be separated, so as to make the opening cubical or even of greater height than width without making any change in the finning of the metal during the rolling operationthat is, the spaces where the fins might be produced in rolling metal are not varied in width by the adjustment of the rolls.

The most important feature in the construction of my rolls lies in the peculiar transverse sectional form of flanges E and E, by which the lateral compression of the metal will be produced. It will be seen that these flanges are not rectangular in cross-section; but the inner faces thereof are partiallytapered near the periphery, as indicated at e c. In other words, the inner faces of flanges E E are parallel and at right angles to the axes of the rolls until they overlap or pass the faces of flanges D D, whenthey are beveled outwardly or tapered, so that they diverge, and the distance between the peripheries of the opposed faces of flanges E E is greater than the distance between the bases and parallel sides thereof. Now, of course, by this construction a bar of greater lateral section than the opening Z could be partially inserted between flanges E E of the rolls.

The flanges revolving with the rolls, the beveled edges 9 6 thereof act to compress the bar laterally, as indicated by the arrows in Fig. 5, and at the same time the peripheries of flanges D D act to compress the bar vertically, so that by the time the end of the bar reaches the opening itis compressed to pass therethrough and is reduced in crosssection. In other words, the beveled portions 6 e of flanges E E cause the two rolls to have the same compressing effect on the metal that is effected ordinarily by the employment of four rollsthat is, two vertical and two horizontaland the flanges E E therefor not only serve to guide the bar to the opening, but to compress it laterally, feed it inward, and work the metal by a kind of shear action thereon, as the faces of the flanges E E travel faster than the peripheries of flanges D D, and the faces of bevels c e of flanges E E travel faster than the portions of said flanges which constitute the sides of opening Z. The metal is thus compressed on all sides and given a torsional twist or pressure previous to reaching the opening Z, as the faces of flanges E E move faster than the metal can pass through the opening and tends to force one side of the metal bar up and the other side down, These complex but actual simultaneous series of compressions produced on the metal insures its iufeed and its thorough working and tends to prevent finning, and the faces of the flanges E E at the outgoing side of the mill serve to dress down or planish the rolled bar.

I have illustrated rolls for rolling bars angular in cross-section; but it will be apparent that the rolls can be constructed for rolling cylindrical bars, but when so constructed could not produce but one size of bar perfectly cylindrical in cross-section, though the lateral compressing effect on the metal would be produced by beveling the edges of the opposed facesof the flanges, as described.

It will be observed that the spaces or meeting edges of the roll-faces are all at angles to the axes of the rolls, and they must be at right angles to the axes of the rolls'in order to permit variations of the size of opening without varying the fin-spaces. It will also be observed that a line drawn between the housings, I Ithe journal-boxes of the rolls,-

and J J are heavy metallic top bars connecting the opposite uprights H H at opposite ends of the rolls, all constructed about as usual, the uprights being firmly secured to a suitable base. The lower boxes are supported on blocks or washers h h and the upper and lower journal-boxes separated by washers it, and by changing the number or thickness of these washers the rolls can be adjusted toward or from each other.

K K designate double cap-pieces, havingenlarged heads or ends 7t k, which rest upon the ends of bars J J and through which the securing-bolts LL project, and the nuts ll thus bind the bars J and K to the uprights. The cap-pieces extend between and above the adjoining side uprights I-I, and the intermediate portion M of the cap-pieces is thickened so as to depend between the bars J and bear upon the tops of the upper boxes I I, so as to prevent upward movement of the latter. Adjustable set-screws O O are tapped through suitable openings in the heads at each side of bolts L, and by tightening these screws the cap-pieces can be firmly locked in position. The screws simply impinge against bars J.

The longitudinal thrusts on the rolls is of course in different directions, and in order to relieve strain on the boxes I employ bars P P, similar in general construction to pieces K. One of these bars P is secured to the uprights I-I opposite the larger end or flange E or E of the rolls exterior to the boxes, being secured to the uprights by means of bolts Q, which are tapped through transverse lateral openings q in uprights H, and their outer threaded ends project through openings in the heads of bars P, and are securely nutted, as shown,

so as to lock the bars to the uprights, and the central portion of each bar is thickened, as at p, so as to press directly against the adjoining journal-box near the roll-shaft, and thus will effectually relieve strain on the roll.

The heads 19 are also provided with adjusting-screws o 0, by which the bars can be trued, and, further, by means of these screws the position of the bar is regulated so that the bars cannot be drawn to the uprights so much as to cause the faces of the flanges of the rolls to unduly bind, but can'be so regulated that the nuts on bolts Q can be tightened firmly without affecting the positions of the rolls. Of course, by this means the longitudinal thrust on the rolls is transferred to the uprights through bars P P, instead of through the connections of the journal-boxes. Ordinary adj HStlIlg-bOltS may be provided at the sides of the mills opposite the respective bars P to facilitate the longitudinal adjustment of the roll-shafts, as no strain is put on such bolts.

The mill may be provided with suitable guides for the metal bars in rolling, as usual, if desired, although the peculiar formation of the rolls will serve to draw the metal in regularly and truly. In practice I propose to arrange a number of pairs of such rolls or a series of my rolling-mills in a continuous train, as is generally done where it is desired to make the reducing operation continuous, and in such case the succeeding pairs of rolls are so arranged that the fillets in each succeeding pair of the rolls will prevent the formation of fins.

Having described my invention, what I claim as new, and desire to secure by Letters Patent thereon, is-

1. In a rolling-mill, the combination of a pair of rolls having flanges, the opposed faces of which are at right angles to the axes of the rolls and parallel to each other for a certain distance and then are tapered outwardly or diverge, whereby themetal being rolled is compressed laterally previous to being passed to the opening between the rolls, substantially as described.

2. In a metal-rolling mill, the combination of a pair of rolls having flanges forming the side of thereducing-opening between the rolls, the opposed faces of the flanges being parallel for the depth of the reducing-opening and then diverging, whereby a metal bar of greater lateral diameter than said opening can be passed between the rolls and whereby said bar will be laterally compressed, substantiall as specified.

3. In a metal-rolling mill, the combination of a pair of rolls having pairs of similar but opposite flanges, between which the reducingopening is formed, the flanges of the opposite rolls forming, respectively, the top or bottom and one side of the reducing-opening, the opposed faces of the flanges, forming the sides of the opening, being parallel for the depth of the said opening and then tapered outwardly or divergent, whereby the rolls will draw in a bar of metal of larger cross-sectional area than that of the reducing-opening and will compress such bar both laterally and vertically, substantially as and for the purpose set forth.

4. In a rolling-mill, the combination of a pair of similar but oppositely-arranged flanged rolls, the flanges of which overlap or pass to form the groove or reducing-opening, the inner faces of the flanges, forming the sides of the opening,being tapered near their peripheries, said rolls being adjustable toward or from each other to vary the size of the openin g, substantially as described.

5. The combination of the pair of rolls constructed substantially as described with the journal-boxes thereof and the bars for relievin g the boxes of the longitudinal thrust of the rolls, all constructed and arranged to operate substantially as set forth.

6. The combination, in a rolling-mill, of a pair of rolls having flanges D E and D E, respectively, flanges E E having their inner faces tapered, as at e e, as and for the purpose set forth.

7. The combination of the uprights, the journal-boxes, and the rolls journaled therein with the bars P for relieving lateral thrust on the journal-boxes, having adjusting setscrews and secured to the uprights, substantially as described.

8. In a rolling-mill, the combination of the pairs of opposite uprights, the journal-boxes moving between the same, and the cap-bars uniting the opposite uprights with the cappieces K, having heads 7c, and set-screws 0, attached to said heads, substantially as specified.

9. The herein-described rollingmill, consisting of the opposite uprights, the connecting top pieces thereof and cap-pieces, the journal-boxes moving between said uprights, and the pair of opposite rollsAB, constructed substantially as described, with the bars P, bolted to the uprights opposite the larger end of each roll and relieving strain on the j ournal-boxes and having adjusting-screws in their ends, substantially as described.

In testimony that I claim the foregoing as my own I aiflx my signature in presence of two witnesses.

, FRED NEVEGOLD.

\Vitnesses:

ARTHUR E. DOWELL, J. R. MANsFIELD.