US517716A

US517716A - Rolling-mill

Info

Publication number: US517716A
Authority: US
Publication date: 1894-04-03
Anticipated expiration: 1911-04-03

Description

(No Model.) Y 3 Sheets-Sheet 1. R, G; WOOD;

ROLLING MILL.

No. 517,716. Patented Apr. 3, 1894i.v

WITNESSES INVENTQR v rjigf i (-No Modeli) 3 Sheath-Sheet 3.

R. G'. WOOD.

V ROLLING MILL. 1 No. 517,716. Patent-dApr. 3', 1894.

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UNiTE STATES PATENT OFFI E.

RICHARD e. WOOD, OF ALLEGHENY, ASSIGNOR TO THE w. D wEEs oon ooMPANY, OF MOKEESPORT, PENNSYLVANIA.

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SPECIFICATION forming part of Letters Patent No. 517,716, dated April 3, 1894.

Application filed December 20, 1893 Serial No. 494,219. (No model.)

To all whom it may concern: 4, for supporting and directing these sheets Be it known that'l, RICHARD G. WOOD, a in between the rolls, and on the rear side of citizen of the United States, residing at Alle the rolls is arranged a plate 5, corresponding gheny, in the county of Allegheny and State to the fore plate 3.- In lieu of arranging the 55. 5 of Pennsylvania, have invented or discovered rear bearing bars 6 in line with the guide certain new and useful Improvements in Rollplate 5,and having them fixed as against ing-Mills, of which improvements the followmovement, they are arranged within a furing is a specification. nace 7, and form a supporting bed longitudi- The invention described herein relates to nal of the furnace on which the sheets may 6o certain improvements in rolling mills for the slide, immediately above the bed of fuel, as production of metal sheets. On account of they are delivered from the rolls, and as they the plasticity of wrought iron, it is compara are pushed back over the top roll for another tively easy to reduce the sheet bars to sheets pass; This furnace 7 consists of aplate metal of any required gage'without re-heating, but shelllined with firebrickofany desired length, 65 I it has been found to be nearly impossible to and of a width a little in excess of the widest 5 reduce steel sheets to the smaller gages withsheets'to be rolled in the mill. The furnace out re-heating at least once during the operis provided on its lower side with an ash pit ation. This re-heating operation has been '8, and above this ash pit are arranged thefound to produce an injurious effect upon the grate bars 9, for supporting the 'coke or other 70 metal, and it is the object of my invention to fuel. The roof 10 of the furnace is preferprovide for the retention of so much of the ably arched as described, and the sides are original heat of the metal sheets or a partial held together by tie-bars 11.

re-heating thereof, as will permit of their re- The furnace is provided preferably on bot duction to any desired gage in a continuous sideswith chimneys 12, for the escape of pro- 75 operation. ducts of combustion. At its front end, 11. e.

In general terms, the invention consists in the end next adjacent to the rolls, the furthe construction and combination substannace is provided with a horizontal slot 13 of tially as hereinafter more fully described and sufficient height to permit of the entrance of claimed. one, two, or more sheets, and at its rear end 8c 0 In the accompanying drawings forming a with asimilar slot for the passage of the sheets part of this specification, Figure 1 is a top out of the furnace. The rear slot leis-proplan \gjew of a sheet mill having my improvevided with a lateral notch or opening 15, to ments applied thereto, the upper roll of the permit of the catcher passing his tongs into mill being removed. Fig. 2 is a view partly the furnace, in order to grasp the sheets as 85 in section and partly in side elevation, of the they come from the rolls, this notch being mill. Fig. 3 is a sectional elevation of the closed when desired by a slide 16. The coke mill and its 'co-operating devices, the latter or other fuel is charged into the furnace being shown in positionfor the reception of through the doors 17, arranged at its rear end,

1 the sheet as it comes from therolls. Fig. 4 and the ash-pan is provided at its rear end 90 0 is a view in elevation, showing the arrange with a door 18 for the removal of the ashes. ment of the heater or soaking furnace for the In charging fuel into the furnace, care should return of the metal sheets to the front of the be taken that it does not rise above the bearmili. Fig. 5 is a rear end elevation of the ing bars 6, which project beyond the ends of heater. Fig. 6 is a transverse section of the the furnace, as shown, aflording guides for the 5 same, and Fig.7 is a sectional detail showing entrance of the sheets into and through the the arrangement of the blast pipes. furnace.

In the practice of my invention the 1 mill In order that the sheets may be heated as proper, consisting of the rolls 1 and housings they pass from the rolls and are slid back 2, is constructed in the usual or any suitable over the top roll, it is necessary to maintain I00 manner. On the front side of the. mill is ara very high degree of heat in the furnace. ranged the fore plate 3, and the bearing rails This is eifected by means of a blast which into compartments by means of doors 21, ar-

ranged between the several blast pipes, so as to confine the operation of the blast, as shown in Figs. 3 and 7. These doors 21, are provided at one end with handles whereby they may be turned up in order to permit of the removal of the ashes from each compartment, through the door in the rear end of the ashpan.

As shown in the drawings, the furnace is provided at or near its rear end with support ing posts 22, resting upon the floor of the mill and at its front end the furnace is supported by a yoke 23, and a chain or rope 24:, passing over a pulley and adapted to be operated by hand or by any suitable mechanism. The posts 22 form a pivotal support for the furnace, whose front end is raised and lowered to receive the sheets from the rolls, and to permit of their being returned to the front side of the mill, by means of the rope 24, or any other suitable mechanism adapted to raise and lower the front end of the furnace.

As the sheets are improved by being rolled while in a cold state during the finishing passes, bearing bars 26 are arranged on top of the furnace to receive and support the sheets during this cold rolling, and the front end of the furnace is given a sufficient range of movement to permit of the bearing bars 26 being brought into line with the plate 5, so as to receive the sheets when they come from the mill.

In operating my improvement the front end of the furnace is lowered until the iron bars 6 are in line with the plate 5, so thatthe sheet will enter into the furnace as it comes from the rolls, and the catcher stands at the rear end of the furnace, and grasping the sheet with his tongs,pulls the rear end of the sheets being rolled, into the furnace so soon as it is free, from the bite of the rolls. The front end of the furnace is now raised until the sheet, when pushed back by the catcher,will strike above the center of the top roll, and the catcher pushes the sheet back through the furnace and over the top roll, when the sheet is again fed in between the rolls, the furnace being lowered so as to receive the same as hereinbefore described. During the last passes, the furnace is lowered sufficiently to permit the sheets passing onto the bars 26, in lieu of upon the bars 6, so that the sheet will not be re-heated.

It will be readily understood by those skilled in the art that the furnace can be shifted to one side when the larger gages are being rolled, and a preservation of the heat for a reheating is not necessary.

The term furnace is used herein generically, as other suitable forms of furnaces and means for heating the sheets may be employed.

I claim herein as my invention- 1. The combination of a pair of reducing rolls and a furnace for heating the article, and means for shifting the furnace, whereby it may be adjusted for the reception and re turn of the article, substantially as set forth.

2. The combination of a pair of reducing rolls, a furnace provided with guides for directing the article being rolled into and out of the furnace, and means for moving the furnace vertically, substantially as set forth.

3. The combination of a pair of reducing rolls, a pivotally mounted furnace adapted to receive the article as it comes from the rolls, and means for raising the furnace for the return of the article to the front of the rolls, substantially as set forth.

4. The combination of a pair of reducing rolls, a furnace provided with guides for directing the article being rolled into the furnace, means for moving the furnace, and guides for receiving the article from the rolls when the furnace is shifted out of the line of feed of the rolls, substantially as set forth.

In testimony whereof I have hereunto set my hand.

RICHARD G. WOOD.

Witnesses:

DARWIN S. WoLoorr, F. E. GAITHER.