US593907A - Machine for rolling tapered metal - Google Patents

Description

(No Model.) 3.Sheets-Sheet 1.

G. PROUTY. MACHINE FOR ROLLING TAPERED METAL] No. 593,907. Patented Nov. 16,- 1897.

(No Model.) 3 SheetsSheet 2.

C. PROUTY. MACHINE FOR ROLLING TAPERED METAL;

No; 593,907. Patented Nov. 16,1897.

Wihwzaea THE cams PETERS co, mom-ummwusumumu, a. c.

(No Model.) s sheets-sheets.

- Q. PROUTY.

MACHINE FOR ROLLING TAPERED METAL' No. 593,907. 1 I Patented-Nov..l6, 1897.

IRWIN {w auve/wtoz rrnn STATES ATENT CHESTER PROUTY, OF RIDGWAY, PENNSYLVANIA.-

MACHINE FOR ROLLING TAPERED METAL.

SPECIFICATIGN forming part of Letters Patent No. 593,907, dated November 16, 1897. Application filed April 3, 1897. Serial No. 630,623- (No model.)

To all whom it may concern.-

Be it known that LOHEsTER PROUTY, a citizen of the United States, residing at Ridgway, in the county of Elk and State of Pennsylvania, have invented certain new and useful Improvements in Rolling Tapered Metal; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the'same.

My invention relates to improvements in rolling tapered metal for working the metal either in a hot condition or for cold-rolling the metal.

In my present invention I employ a templet for controlling the rolls in a peculiar way, so as to vary the thickness of the pass between said rolls. I am aware that, broadly speaking, it has been proposed to gage and vary the thickness of the'metal by the employment of a templet or pattern-cams forming parts of rolling-mills,bu't experts in steel-making have condemned prior devices for rolling tapering metal by the use of templets, because a revolvingmetal-working roll on a running templet operates to stretch the steel on the top side next to the roll and to ruffle the grain next to the bottom roll, the templet holding the metal on the side next to it, thus producing' in the metal an open grain on one surface and a close grain on the opposite face of the work. Steel produced in this manner is worthless for manufacture into too1ssuch as crosscut-saws, handsaws, cutlery-blades,

and analogous articlesbecause the prepared metal does not possess the strength requisite to stand the work required of tools of the character mentioned. I overcome these 0bjections by using a templet in connection with a set of working rolls and a set of patternrolls, the former serving to reduce or shape the metal and the latter accommodating the templet or pattern. Said sets of rolls are combined in a peculiar manner to insure all of the rolls having the same peripheral speed and to render certain of the working and pattern rolls adjustable or movable simultaneously,in accordance with the thickness or gage of the templet. A rolling-mill constructed as outlined briefly above receives the metal to be prepared and the templet at the same instant, the metal and templet travel between their respective rolls at. the same speed, and both the metal and templet emerge or drop from their respective rolls at the same time, thus imposing a minimum amount of labor on the operator and enabling him to handle the metal and templet with ease; and the invention further consists in the novel combination of elements and in the construction and arrangement of parts which will be hereinaftermore fully described and claimed.

To enable others to understand my invention, I have illustrated the samein the accompanying drawings, forming a part of this specification, and in which-- Figure 1 is a side elevation showing the working rolls constructed to shape and reduce the metal suitable .for manufacture of crosscut-saws, handsaws, and cutlery articles. Fig. 2 is an end elevation thereof. Figs. 3 and 4 represent one form of templet and a rolled metal plate produced by passing the templet and plate through a mill embodying my invention. other rolled plates prepared by a mill and templets according to-my invention. Figs.

Figs. 5 and 6 areviews of plates or blanks suitable for manufacture into handsaws and cutlery articles. Fig. 9 is a detail sectional view on the plane indicated by the dotted line 9 9 of Fig. 2. Fig. 10 is a detail view of one of the upright side frames. Fig. 11 is a detail view of one of the journalbearings. Fig. 12 is an elevation of another embodiment of my rolling-mill in which each set of working rolls and pattern-rolls comprises three rolls for passing and repassing th e metal and templets back and forth through the mill.

Like numerals of reference denote corresponding parts in all the figures of the draw- Iteferring to Figs. 1 and 2 of the drawings, the numeral 1 designates a substantial foundation or bed-plate, and 2 3 the side frames, of my rolling-mill, the whole being firmly secured together by bolts and to a substantial foundation. The side frames are constructed in a novel way to receive peculiarlyformed journal-bearings that sustain the sets of rolls in operative relation to each other between said side frames.

The working rolls are indicated at 4 5 in the drawings, and'the pattern or templet rolls are indicated at 6 and 7. The u pper working roll 4 and the lower pattern-r0117 are stationary within the side frames so far as regards any vertical adjustment, but they are free to rotate on their axes, while the working roll 5 and pattern-roll 6 intermediate be tween said non-adjustable rolls 4 7 are capable of vertical sliding movement and of rotary motion in their journal-boxes, the extent of said vertically-slidable motion of the intermediate rolls being controlled by the thickness or gage of the templet.

The upper stationary working roll 4 has its shaft or trunnions journaled in a pair of stationary boxes 4, the adjustable working roll 5 is journaled in vertically-slidable boxes 5, the adjustable pattern-roll 6 is journaled in the sliding boxes 6, and the lower patternroll 7 is journaled in the stationary boxes 7'. \Vhile the boxes 4 for the upper working roll are stationary under normal conditions, yet they have a limited vertical adjustment under the influence of suitable manual devices for the purpose of moving the upper roll 4 toward or away from the roll 5 under certain conditionsas, for instance, when it is desired to vary the depth of the pass between the working rolls to produce steel plates or blanks of different thicknesses or gages.

Each side frame 2 3 is preferably cast in the form shown by Fig. 10, and it has a longitudinal slot 10, which, however, does not open through either end of the frame. This slot forms the guideway for the j on rnal-boxes, and to hold the boxes to slide true in said frame to secure the best results by the action of the rolls I construct the guide-slot with the beveled ribs 11 and form the ends of the journal-boxes with beveled bearing-faces 12, the bevels of the bearing-faces in the journal- 'boxes corresponding to the beveled faces of said ribs or walls in the guideway of the side frame. This construction of the side frame insures true working of the journal-bearings with a minimum vibration or play either laterally or endwise, and in case the faces of the guideway or journal-boxes become worn to such an extent as to produce imperfect work the journal-boxes may be withdrawn and said faces of the side frame may be planed true and other boxes adjusted in the frame to make the parts resume their true relation, thus reducing the cost of repairs. To facilitate the introduction or withdrawal of the journal-boxes to or from the guidewayin the frame, the slot 10 is enlarged at its extremities, as at 10, the width of each enlargement being equal to or greater than the space between edges of the slot throughout the major portion of its length, and said beveled ribs or bearing-faces being arranged centrally with relation to said end enlargements, whereby the journal-box may be slipped into the enlargement and arranged free from the ribs or bearing-faces, so as to easily withdraw said box from the side frame or replace it therein.

The head of each side frame has a vertical central threaded socket 13, in which is fitted an adjusting and holding screw 14, and said screws in the side frames 2 3 engage with the journal-boxes 4 of the upper working roll 4, so as to sustain the latter normally in a fixed position so far as regards vertical adjustment with relation to the other working-roll 5, but said screws 14 also serve to adjust the roll 4 relatively to the roll 5 when it is desired to change the gage or thickness of the metal to be reduced by and between said rolls 4 5. The lower templet-roll '7 is rendered non-adjustable by fastening its boxes 7 to the side frames in any suitable way.

It will be understood that the rolls 5 0 and their complemental boxes 5 6 are adjustable freely within and between the side frames and the top and bottom rolls, and that said slidable bearings 5 (3 serve to maintain the rolls 5 G in proper relation to the rolls 4 7 and to each other, because the boxes 5 6 areguided in the side frames in a manner to overcome any tendency to lateral or endwise play therein. Consequently the axes of all the rolls are parallel to each other, so as to attain the best results in rolling the metal between the working rolls 4 5. Normally the boxes of the adjustable pattern-roll 6 rest upon the boxes of the roll 7, and the boxes of the roll 5 rest upon the boxes of the roll (3, but spaces (indicated at 15) are provided between the boxes of the rolls 4 5 to provide for proper movement of the rolls 5 (3 toward or from the rolls 4 7 under the control of the tcm plet as it passes between the pattern-rolls 6 7.

I prefer to divide each journal box or bearing horizontally, so as to form two sections, and to clamp said sections rigidly together by suitable bolts, so that the box or hearing will properly confine and support the roll shaft or journal. journal is extended through the journal-box, and said protruding ends of the shafts are geared together by intermeshin g gears, (indicated at 16,) which are so proportioned and constructed as to operatively connect all the rolls no matter what their relative adj ustment may be and to propel or drive all the rolls at the same speed, whereby the templet and work passing independently between separate set-s of rolls are caused to travel at the same speed.

-The pattern-rolls are preferably of cylindrical form and they lie in the same vertical plane with their axes parallel to each other. As shown by Fig. 1, the working rolls taper from their middle toward their ends, so that they are of greater diameter at the middle than at the ends. This form of the working rolls insures the production of a blank or plate with a thin median portion and thickened edges suitable for making two saws or a series of cutlery-blades, such as disclosed by my prior application for a patent filed March 3, 1896, Serial No. 581,658, and as shown in my patents for erosscut-saws dated One end of each roll shaft or.

November 11, 1890, No. 440,253; October 20, 1891, No. 461,509, and August 4, 1896, Nos. 565,390 and 565,298, but this shape of the working rolls is not material to my present invention, because the shape of the rolls may be varied to suit the requirements of the work. Thus if steel plates of uniform gage are desired I may employ cylindrical rolls of uniform diameter, or if plates or bars of irregular cross-sectional contour are desired the faces of therolls are shaped accordingly, as when it is desired to roll out plates suitable for making ax-blanks. Again, the working rolls may be provided with segmental or' an gulargrooves or channels arranged in alinement to form passes suitable for rolling round or angular metallic plates or bars. I In this connection the construction of the side frames and the journal-boxes forms an important -20 feature of my invention, because such construction enables the rolls to be changed quickly, according to the needs of the service.

My present invention is directed more particularly to that feature which contemplates the production by the rolling operation of plates or blanks which vary in gage or thickness crosswise or lengthwise, either or both. In the fabrication of metal for manufacture into crosscut-saws of the character disclosed by my prior patents to which reference has-- been made it is essential that the saw-blank shall be produced having its working edge thicker at its middle than at its ends, while the back edge shall be thinner at its middle the blank it' is desired to produce-th-at is to say, where the templet is thickest it produces in the saw-blank the thinnest portion or highest gage, and, vice versa, where the templet is thinnest it produces the thickest portions or lowest gage in the saw-blank. This feature is brought out by the comparative views Figs. 3 and 4 of the drawings, in which the numeral 20 designates the templet, and 21 the saw-blank produced by passing the metal and templet between the sets of working and templet rolls 4 5 and 6 7, respectively, of the mill. In Fig. 3 the templet is shown as having the gage '14 at its ends and the gage 12 at its middle, but the saw-blank produced by passing the metal sheet between the shaped working rolls has the varying thicknesses indicated by the gage-numbers in Fig. 4. Of course the gage or thickness of the templet may be changed to suit the desired tapers or thicknesses it is desired to produce in the saw-blanks, and in Figs. 5 and 61 have shown various kinds ofplates with thicknesses or gages distributed in differential order, as indicated bythe gage-numbers in the' respec tive figures.

While I have specifically shown and mentioned the manufacture of crosscut saw blanks of varying gages throughout the length and width thereof, yet it is to be understood that my invention is also applicable, by the employment of suitable templets, tothe manufacture of tapered sheet-steel suitable for making blanks for ,manufacture into handsaws and cutlery articles, and in Fig. 7 I show by dotted lines how a series 'of handsawblanks may be produced by cutting out the metal, and Fig. suitable for butchers knives may be produced from sheet-steel made according to my invention, it being of course understood that such blanks vary in gage or thickness at different points and as indicated by the gagenumbers in the different figures.

While I prefer to construct my taper rolling-mill with a pair of working rolls andanother pair of templet-controlled rolls, I do not wish to be understood as strictly limiting myself to the precise number of rolls used in the mill so long'as the number of rolls used is not less than four, which I regard as essential for the proper accommodation of the templet and the metallic sheet to produce the blank desired. In Fig. 12 I have shown my rolling-mill constructed with a greater'number of rolls proper for passing and repassing the blank and templet back and forth between the two sets of rolls to effect the gradual reduction and shaping-of the blank. In this style of mill using a set of three working rolls and another set of three templet-rolls the passes between the two upper working rolls and the two upper templet-rolls are of greater. width than the passes between the second and third working rolls and the second and third templet rolls, respectively. The work and templet are fed in one direction between the first and second rolls of their respective sets and then passed in the oppo: site direction through the passes between the second and third rolls of their respective sets of rolls, thus reducing and shaping the work progressively by successive passes back and forth between the rolls.

The templets which I'employ are of a length equal to the full length of the blank or sheet 7 the operation of adjusting the intermediate working and templet rolls, and this treatment of the templet is especially necessary when the mill is to be used for cold-rolling metallic sheets.

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

1. The combination with a framing, of a set of coacting working rolls, and another set of coacting templet rolls independent of the working rolls and arranged to be adjusted by a templet fed therethrough and to vary the width of the pass between the working rolls according to the degree of adjustment afforded by the varying thicknesses or gages of the templet, as and for the purposes described.

2. The combination with a framing, of a set of coacting working rolls, another set of coacting teniplet-rolls independent of the workin g rolls and in operative relation to the working rolls to vary the width of the pass therebetween according to the different gages or thicknesses of the templet, and means for giving uniform peripheral speed to all the rolls of the said sets of working and templet rolls, as and for the purposes described.

3. The combination with a framing, of a set of coacting working rolls one of which is adjustable with relation to the other, another set of independent coacting templet-rolls, one occupying a non-adjustable position and the other arranged for adjustment in connection with the adjustable working roll, and gearing for operatively connecting all of said rolls to give a uniform peripheral speed thereto, as and for the purposes described.

4. The combination with a framing, of a set of coacting rolls the upper one of which has its boxes held in place by suitable means and the other roll having its boxes mounted in said frame to slide freely therein, another set of coacting templet-rolls the lower one of which likewise has its boxes stationary within the frame and the other roll mounted in freelyslidable boxes, the latter arranged to raise or lower the adjustable working roll according as the adjustable templet-roll is raised or lowered by the varying thicknesses or gages of a templet fed between the templet-rolls, as set forth.

5. The combination of a set of positivelydriven working rolls, another set of templetrolls independent of, and driven at the same peripheral speed as, the working rolls and arranged to adjust the working rolls at different periods, and a templet of variable thicknesses or gages arranged to be fed through the templet-rolls, substantially as described, for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHESTER PROUTY.

Vitnesses:

A. E. ENT, D. E. ELLIOTT.

Images