US133771A - Improviment in rolling-mills - Google Patents

Description

6 Sheets-#8116911.

G. FRITZ.

Rolling Mills.

Patented nec. 10,1872.

`i Mme/la A Invenord.. v ywwwm@ 15. man. Railing im.

Patented Dec. 10, 1872l lShee'ts--Sheet '6. FRITZ.

-Rolling Mills.

PatentedDec. 10,1872.

Inventry.

-G F H T Z Rolling'Mills.

Patented Dc. 10, 1872.

i encuen" FRITZ, or .Ionnsrown rENNsYLvANmQ l I'MPRGVEIMENT IN Rommel-MILLS.

Specificationformingpart of Letters Patent No. 133,771, dated December 10, 1872.

To all--whom` fit-5 muy; concern:

Be. known. thatl, GEORGE FRITZ, of Johnstowmwinf the coun-tyof Cambria and State'- of Pennsylvania, e have:r invented certain Improv'ementsv in Rollin gv-Millsfor rolling steel andiron in4 ever'yform, of which the following` is-.ia1specicati'ong A Theflrst part of myfinvention relates to feeding-rollers, driven by friction or otherwise, on'y a movableA table, which is raised andVv lowered by hydraulicior other power and which carries the-.metal to be rolled, said driven rollers feeding the metal into the rolling-mill on one side, taking it out on the other Y side, and drawing it cleary from the mill rolls and guides,and then returning it in the same manner, thus passing the metal back and forth asthe tables are elevated and lowered until the process of reduction is completed, said feedin g-rollers bein g combined with and moved by=a shaftoperating gear and friction-wheels, which are supported `by and attached to a yoke suspended in suchy manner that vthe frictionwheelsy connected with it may be brought in contact withor detached from a friction-wheel operating the feed-rollers, by a slight movementof leversinfront and rear of the ma chine;y The second part of my invent-ion relates to the combination and arrangement of turners and Shifters, of inclined or 'other suit-v able form, connected with a carriage running beneath theu movable feed-tables insuch a way that when the said tables are lowered the turners and shifters project between and above the `feed-rollers and turn over or partially over the piece of metal being rolled. The said turners Vand Shifters-may also `be mov-edjby'hydraulic or other powerback andl forth between thefeed-rollers and placedin any desiredpositionwithy Vreference to the piece'of metal beingrolled, inl such manner asto adjust it properly for entering'themill-V rolls. The steelpointsiu the vtop of said turn-r ersand shifters and ontheir inclined sides, together with such motion as may becommunicated tothem Vat will'througlrthe piston or other suitable `apparatus for moving the can riage,ietlect'the purposev of turning and adjustingthepiece of metal as-aforesaid.

' Figure 1 is afront elevation of a train of th'reefhigh rolls and i appurtenances.' Fi g.' 2

.shows the end elevation of the same with movable tables atfrcnt and rear.` Fig. 3 isa plan of the same. Fig. 4 is a plan,on an enlarged scale, ofA a part of one table, showing the arrangement for moving the feed-rollers. Fig. 5 is a side view of a part of one of the tables and its extreme upper and lower positions, with elevations of the gearing and friction-wheels employed to drive the feed-rollers. Fig. 6 isa front elevation ofthe yoke carrying the gear and friction wheels,A for operating the feeding-rollers.

The same letters refer to like parts in the drawing.

The housingsK K carry the `mill-rolls L L and L in the usuall manner, and rest on the shoes or bed-plates M. The top and bottom rolls may be movable vertically in the'honsings, or they may be stationary and the midn die-roll may be movable, or all the rolls'may be. stationary, or all movable, my invention `applying to all these cases. The feeding-tables N and N', as shown, are raised and lowered by hydraulic cylinders operatedzby the rods F and F, and are guided by the` armsO and O', and the guides P and P'. The tables may, however, be arranged and voperated in any other suitable manner. ma are'shafts, driven by means of the pulleys b b. These shafts may be driven byrany othersuitable means, by power derived from the engine that drives themill-rolls, or from any suitable line of shafting or engine. The shafts a. a' are` drivenin the direction indicated bythe arms' in Figs. 2 Aand 5,' and upon said shafts are swiveled the yokesgC C. These yokesG C' carry the geanwheels d d e e, the idler-wheels' f j, and the friction-wheels g g h h, shown in" Figs. l, 2, 5, and 6. The gear-wheels 'i are fast on the shafts a.' a, and by the arrangement of the wheels d ef drive the friction-wheelsgg71l h in the directions vindicated by the arms in Fig. 2. The yokes C C are connected by the rodj with the rock-shafts k l, upon which are o keyed the levers m m. The friction-wheels n n' are fast on the shafts o o on the feed-tables, upon which shafts are also fastened thefeedfrollers p p and the gear-wheels qq. The other rollers, r 1^ r, on the feed-tables, are fast on the shafts s s s, as are also the gear-wheels tt t, and all of these geanwheels are connected withv each other as well as with the gear-wheels q q, by the idler-wheels u u u, in such manner that when the shafts o o are revolved in any'direction, all the rollers on the feed-tables will revolve in the same direction. This revolution is ei'ected by throwing the friction-wheels n n in contact with the friction-wheels attaehed to the yokes C C, which may be done by moving the levers on m on either side of the train. The feed-rollers r M' are mounted, as before explained, on movable tables, (see Figs. 2 and 3,) which lift and let down alternately the piece of metal to be rolled, from the position indicated by the Yline 'v r in Fig. 2 (said line corresponding to the lower passes) to the position where the tables are represented in Fig. 2, corresponding with `the upper passes. The upper and lower positions of the table are also shown by Fig. 5.

The above-described arrangement rendersit easy, by-moving one of the levers on either .side of the train, to feed the piece of metal on the table into the rolls, and to withdraw it far enough from the rolls to let the tables go up and down without hindrance. lw w are plates fastened in front of the rollers to protect them from injury by the piece of metal when it is leaving the rolls.

The operation is as follows: The ingot or piece of metal to be rolled having been placed on the feed-rollers p 1 1 d' on the front table N', the table being in its lowest position, (see Figs. 5 and 2,) and the feed-rollers not being in motion, the workman moves the lever m in such manner that the constantly-moving lower friction-wheel l1l comes in contact with the friction-wheel n, thus starting the friction-wheel n and all the feed-rollers connected with it. The feed-rollers thusv carry the piece of metal between the lower and middle mill-rolls L L, by which it is rolled and c arried through'to the back ytable N, which is also in its lowestposition. The feed-rollers on the table N are then set in motion in the same direction by means of the lever m, and carry the piece of metal toits proper position on the table N. The workmanthen moves the lever m into a central position, and so stops the feed-rollers. The tables N and N are then raised to the upper position, shown in Fig. 2. The workman then moves the leverm in such manner as' to bring the constantly-moving upper friction-wheel g into contact with the friction-wheel n, thus starting 'the feed-rollers onv the table N in the kopposite direction to that in which they previously moved, thereby carrying the piece of metal between the upper and middlemill- `'rolls L and L.v This operation is repeated fas often as desired.

.'ln some cases it may notbe necessary to Y operate the feed-rollers by power when they receive the piece of metal from the mill-rolls, 1- but only to operate them by power when they l)carry the piece of metal into the mill-rolls. In such cases the speed of the mill-rolls should be suiicient to throw the piece of met .'al out so far that the table can be raised without hindrance. The motionof the'feed-rollers need not in suchA cases be reversed by moving theQ lever fm.; but they may be driven only at the. time and in the direction necessary to feed Ithe piece toward. the mill-rolls.

It will be observed that the combination of the movable table with the driven rollers is found. in my invention, whether said driven rolllers are reversed or driven in one direction on y.

The arrangement for turning and shifting the piece to be rolled is as follows: A A A,

Figs. 1 and 3, are one or more pieces of metal,

turners and Shifters may alsobe used without these steel points.

The operation is as follows: When the piece of metal needs tovbe shifted or turned laterally the turners and Shifters are run into such a position under the-table (the table then being in its upper positionlthat when the table is let down the steel points D D D engage the piece, causing it to turnover, which being done the piece glides Adown the turners and shifters until ,itr fallsY on the table where it is wanted, or, by moving the carriage, the piece is moved laterally into its proper positionrto: be yfed into the rolls again. The turnersandshifters are then/withdrawn and the feed-rollers again set in motion, as aforesaid. Y

. In some cases I prefer to place and operate the turners and Shifters above instead of nnder the movable table. y

Claims.

. What I claim, and desire to secure by LetterslPa-tent, is

1. The combination, vin a rollingmill for rolling steel and iron, of movable tables for supporting and carryin g the piece to be operated upon, with driven feed-rollers in said movable tables, whether saidl driven feed-rollers are reversible or non-reversible, substantially as set forth.4

2. The combination of rods j j and levers m m with the yokes c c, in such manner that the driven feed-rollers in the movable tables may be set in motion by means of either of the levers m m,'thus enabling menen opposite sldes of the train to start the driven feed-rollers 1n motion or to assist each other.

3. The arrangement and combination of the y yoke' and the gear-wheels and friction-Wheels supported by the yoke, substantially as setv forth. y y 4. The combination of one or-more upright turners and Shifters with a movable table or tables, and operated by hydraulic or otherl power, substantially as set forth.

5. I claim the arrangement and combination, in a rolling-mill, of the yokes With their attachments, the movable tables containing driven rollers with their attachments, and the turners and. shifters with their attachments, substantially as set fort r GEORGE FRITZ.

.Witnesscsz t ISAAC E. CHANDLER,

GYRUs ELDER,

A. MONTGOMERY.

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