US96728A - Improved machine for rolling plane-irons - Google Patents

Description

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Letters Patent No. 96,728, dated November 9, 1869.

IllVl-PROVED MACHINE'IOR ROLLING PLANE-IRONS.

l Q I The' Schedule referred to :in these Letters Patent and making part of the samei To all whom 'it may concern l section through the rolls` Figure 2 represents am elevation from the rea-r of the machine.`

Similars letters of reference, where they occur -in the separate gures, denote like parts in .both of the drawings. l s v My invention consists in arranging, `in connection with a pair of rolls for rolling out plane-irons and other similar articles, and a supporting-table, a shifting-gauge, which, after thev strip or plate has had ,one pass under the rolls, to shape and weld the steel to it, is changed, and, under. the same heat, 'the article is again introduced, and receives another pass, to condense the steel, and give the article a {inished appearance 'lo enable others skilled inthe art to make and use my invention,'I will proceed to describe the same with 'reference to the drawings.

is a staud,on which is arranged a pair of rolls,

On the journal of one'of these rolls is placed the main driving-gear, D, by which that ro'll is driven, and,.throug' h the gears E F, on'tl'ie journals of lthe' pair of rollers, they are driven in the direction of .the arrows, as seen in fig. 1..

Upon a table, a,` behind the rolls, there is placed a gauge, b, which defines the distance'that the, ar-

ticle that is to be rolled is passed, or inserted in, through, or between the rolls.

A connecting-rod, c, connects this gauge with a lever, d., that is pivoted at c, and at its i'ee end there are two or more stops or recesses, j', into which `it may be placed, to hold it and the table and gauge rinly in its adjusted position.

The table ais supported and slides on the arms or ways g, connected to the stand.

rlhe rolls are of uniform, or nearly so, diameter, and are out away from l to 2, so that when these two portion of the rolls are opposite to cach other, they will open up a space wide enough to readily admit ofthe placing in, of the strip or article to be rolled,- against the gauge-bar b.

Diametrically opposite these cut-away portions of the two rolls, are the rolling-siuices or dies, h i,

which Iprefer to make of steel or chilled cast-iron, and capable of being removed and replaced on the rolls, or others substituted for. them. v

, The `plate or'strip is so introduced as that the rolling-surface or die h, on the upper roll, will act upon the steel portion of the plane-iron, or other article, and the other rolling-surface or die li, ou the under roll, acts upon'the iron portion of the article.

The-most prominent portion of the die h is at the point 3, and thisr part, acting in connection with the under die i, bites or pinches into the metal, while the remaining surfaces draw it outinto the proper tapered form to make'a plane-iron.

The dieh is slightly eccentric, and that, be similarly so, or concentric with the centres of the rolls.

The operation is as follows:

The rolls B C are rotated in the direction of the arrows, and the operator stands in front of 'fthe rollscalling that the front7 where the lever d is placed, and that the"back7 of the rolls where the sluitinggauge is placed; the lever (Land the rolls B C heing in the position shown in iig. 1, the article to be rolled being, 'together with the steel that formsthe face of the plane-iron, heated to a welding-heat, and passed in between th`e rolls, until it comes against the gauge b, and rests upon .the table a.

Then, as the two dies h fi come around` they catch theplate or article to be rolled, biting into the metal, and stretching or drawing it out, and, at the same time, giving it a tapered form, and deliver it at the saine side ofthe rolls that it was fed in at.

rlhis single operation ordinarily brings the planeiron or other article to its exact size, or nearly so, but by the/same heat I propose to condense, smooth, and finish the article, and for this purpose, shift the lever d into the other notch, f, and correspondingly mov-- ing back the gauge from the rolls,l and thus allow the article to be moved further through between` the rolls, but not so much further as would equal the stretching of the .metal under the iirst pass; sothat though the gauge is moved further back, and the strip moved further through, yetthe bite ot' the dies on the second .pass will be short of that made by the lirst pass, and this allows the dies to take hold where themetal is a little thicker, and .the next pass condenses the steel, and gives a smooth appearance-to the article.

The rolls B C are long enough to admit `the lirst pass to be made at one 4part of the rolls, and the condensing-pass at another part thereof.

This is important in practice, because, however much care may be taken inl keeping the rolls clean, the slag, cinder, scale, or the welding-flux nsed,wil.

fi, may

adhere somewhat to them, and niailthe rolled sur-A faces of' the articlev so drawn out but the second or condensing-pass is made where the rolls are entirely.

clear and smooth, and thus putaJ nish upon them., The gauge being the entire length of the rollingslnfaces of the rolls, the article is-correctly and uniformly'inserted between them :tt my point in-tlieir length. A t

Having thus fully described my invention,

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