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och 22, 1945- ' - F. w. LORIG ETAL - 2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS‘ Filed April 15, 1941 1a Sheets—$heet 1 1% k / 1:? > ‘X Q ' Q _ Q‘ 17209205075: ff?Mé/l.’ 105/6, 100/5 Alf/14.472 m1 ffezwk E. Eoawaom w-yaogwz. \ 001;. 22, 1946'. F. w. LORIG E'l‘AL 2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filed April 15. 1941 18 Sheets-Sheet 2 Q‘ lil =’_l . m zu '- hweniars: ?ew/w l1.’ Zoe/6, 100/5 L?/ufe I~ E. Eoa/Naa/v, 5! Oct 22, 1946. F; w. LoRlG' ETAL 2,409,770 APPARATUS FOR CONIINUOUSLY PROCESSING METAL STRIPS‘ Filed April 15, 1941 ‘ I 18 Sheets-Sheet 3 W é _ M XW .@e % Oct. 22, 1946. F. w. LORIG EAL ‘2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filed April 15, 1941 18 Sheets-Sheet 4 ' 172067250715.’ ‘Fen/w 22/1004, 100/5 1/7/1415? 004’ Fad/VA’ é‘. Poem/50m Oct‘ 22, 1946- 2,409,770 'F. w. LORIG ErAL APPARATUS FOR CONTINUOUSLY PROCESSING METAL; STRIPS Filed April 15, 1941 , 18 Sheets-Sheet 5 00.0 .0 v N NW0 .QK A0 0 Y ' lnuenz'ars: lknm/ [Zoe/6, [00/5 1. Muff 4/20’ Fem/k E. Baa/N50”, ’ @ jug a. ?arrfférmy 0a, 22, 1946.. F. W. LORIG ETAL 2,409,770 APPARATUS FOR CONTINUOU-SLY PROCESSING METAL'STRIPS Filed April 15, 1941 ' ' 18 Sheets-Sheet_ 6 '7.PIE. A0105 Lil/445E 0/70" Fen/v! E. EOE/N90”, , é _' MLAAL y Oct 22, 1946I ‘ F. LORlG EI'AL ‘ ' 2,409,710 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filed April 15, v1941 4, \l» I l8 Sheets-Sheet 7 Oct. 22, "i946. - F. w. LORIG ETAL ‘ 2,409,770 APPARATUS FOR CQNTINUOUSLY PROCESSING METAL STRIPS Filed April 15, 1941 18 Sheets-Sheet 8 . ’ ITZUéYZ/OTS; ' IVA’ lt/zae/a, [00/5 1/7/1454? I‘ jerk/wag’. Oct. 22, 1945- A F. w. I.._ORIG ETAL 2,409,770 I APPARATUS FOR GONTINUOUSLY PROCESSING METAL STRIPS Filed April 15, 1941 18 Sheets-Sheet 9 FIE.12 Mam,‘ wm/mey ‘a Oct 22, 1946. F. w. LORIG ETAL ‘ 2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filed April 15, 1941 1.11E-‘PI 18 Sheets-Sheet ‘10 Oct 22,1946: ' - ‘ F. w. LORIG ETAL ~ 2,409,770 'APPARATUS FOR CONTINUQUSLY PROCESSING METAL STRIPS Filed April 15, 1941 X4 18 Sheets-Sheet 11 X7 #4 X4 " X7 M4 X4 If. X4 - 1Y4 - -7 X7 >FIE-1EL‘ 5719/ 7.7 ' /P5 6, [1.60/16 100/3 L. M/LLEE m4 Ff?/VK 5 EOE/NSO/V, ‘ Oct. 22, 1946. -' ‘ _F. w. LORIG ErAL' ' 2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING IETAL STRIPS Fileyd April 15, 1941 .60 FIEAV. xr“ .6! /I m._ 4 J0 1F5IG. M6 18 Sheets—Sheet 1s X4 ‘M6 I ‘/ “M7 X6 E7 M6 55 4 L_ I 60"~ 50" __5 Mo57ms9/:!’ l M4 "lNcZ37/9"T0 I 5kW" X? ‘ 6a. 22, 1946. 2,409,770 F‘. W. LORIG EI'AL APPAR-ATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filed April 15', 1941 18 Sheets-Sheet 15 ‘ .Qx ‘WM @7Q‘@ FWK\\E. . “2<2 3Q Tvw _ m? A.&NLJQ .UNUE =Q§v 5»km7 a Ex, . g._ k‘ FR:klQQ $1._Qx ., m bk k .QM. xxE»A m? _ m .mh2% _ MN oct- 22, 1946- F. w. LORI'G ETAL 7 2,409,770 APPARATUS FOR CONTINUOUSLY PROCESSING METAL STRIPS Filled April 15, _1941 " ‘- ' 18 Sheets-Sheet 17 PU/NC'HROL MASTER MO'TR-7' 201 TUBE C/“(IT ‘ 24. MORK7FETL-4'RUSP INVENTORS M10016, tau/:1. Mum andFRA/VKE. ROBINSON, ’ - hé/r Amamey. ' 'Oct. 22, 1946., F. w. LORIG' ETA! 2,409,770 _APPAR_A'I'US FOR CONTINUOUSLY PROCESSING METAL‘ STRIPS Filed April 15, 1941' fww. $2 18 Sheets-Sheet .18 2,469,770 Patented Oct. 22, ‘1946 UNITED STATES PATENT. OFFICE APPARATUS FOR CONTINUOUSLY PROCESS ING METAL STRIPS Frank W. Lorig, Lakewood, Louis L. Miller, Gar ?eld Heights, and Frank E. Robinson, Shaker Heights, Ohio, assignors to The American Steel and Wire Company of New Jersey, a corpora tion of New Jersey Application April 15, 1941, Serial No. 388,708 4 Claims. (Cl. 271——2.3) 1 This invention relates to the continuous proc essing of metal strips and, more particularly, is directed to an improved means for performing a .heat treatment on one or several strips of steel wherein the exposure of the strip to the processing treatment can be very carefully regulated and 2 showing of this view continuing from the line a--a of Figures 2 and 2a; Figure 2b is a still fur ther extension of ‘the apparatus, the view continu ing from the line b~—b of Figures 2B‘ and 2'“; Fig ure 2° is a still ‘further extension of the appara tus, this view continuing from the line c--c of Figures 2 and 2°; Figures 3, 4, and 5 are side elevational, rear elevational, and plan views, respectively, of a duced in strip form, such as silicon steels intended for use in electrical apparatus, which strips, in 10 typical form of aligner; Figures 6 and '7 are side elevational and rear order to develop the optimum in physical or elec elevational views, respectively, of one of the strip trical properties, have to be subjected to carefully forwarding mechanisms; controlled heat treatment. In the 108.58 of electri ‘Figures 8, 9, and 10 are side elevational, plan, cal sheets, such processing is carried out by batch annealing or normalizing processes which are 15 and end views, respectively, of one arrangement of pinch rolls adapted to control the advancement facilitated by the physical shape of the material critically controlled. There are some types of steel which are pro of the strip; being treated, rendering special equipment in giv ing effect thereto unnecessary. In the case of strip steel, however, the commercial requirements ' Figures 11 and 12 are side elevational and trans verse elevational views, respectively, of one ar are such as to render the production of all widths 20 rangement of master pinch rolls; of strip steel, ranging from 6” wide, or less, up to 42" and wider, necessary. The elaborate heating Figures 13 and 14 are a fragmentary detailed View (shown partly in section) and a rear eleva tional view, respectively,,of one of the apparatus units designated ‘by the letter V in the line illu be applied in performing the continuous anneal in Figures 1° and 2°; ing of such strips, renders prohibitive the provi 25 strated Figures 15 and 158“ are schematic planar pro sion of separate processing lines‘for each strip, jections showing how one form of apparatus em or each width of strip to be operated upon. It is, bodying the present invention can accommodate therefore, one of the main considerations, of the ‘different widths and ‘numbers of strips, and the ‘present invention to provide a unitary line for the relative placement thereof as to the catenary continuous heat treatment of one or more strips pinch rolls (designated by reference numerals irrespective of the widths thereof up to a prede pre?xed with the letter “M”) and wind-up reels termined maximum. 7 (designated by reference numerals prefixed with In accordance with the present invention, it is ‘the letter “X”) ; contemplated that, either one strip of maximum Figures 16 to 21, inclusive, each shows, in sche width, or a plurality of strips of less widths, the matic planar projection, the placement of rolls total of which does not materially exceed the strip in the catenary pinch roll unit and how di?erent of maximum width, ‘can be processed simulta widths of strip, as illustrated in Figures 15 and neously, with each strip being independently con 15a may be accommodated therein in varying trolled and regulated in its course through the processing zones .of the line without interference 40 numbers. Fig. 22 is a fragmentary side elevation of the with or from the adjacentstrips being processed. catenary furnace employed in conjunction with In the drawings: the present invention; Figure l is a partial plan view of the improved furnaces and appurtenant equipment that must Fig. .23 is a sectional elevation of the furnace, . taken on line XXII-—XXII of Fig. 22; ‘ Figure la is a continuation of the apparatus, Figs. 24 and 24A taken together illustrate a this view continuing from the line a—cl, Figures 1 wiring diagram of the complete electrical con and 1*‘; Figure 1b is a further continuation of the trol system of the apparatus, Fig. 24A being a apparatus, this view continuing from the line continuation of the diagram of Fig. 24, b—b, Figures la and 11); Figure 1° is a further Referring now more particularly to the draw continuation of the apparatus, the view continu 50 ings, there is shown in Figure 1 a side elevational ing from the line c—c, Figures 1b and ,1“; view of one form of equipment that gives effect Figure 2 .is a partial sectional elevation of the apparatus of this invention; apparatus, the view being taken .along the center line of Figure 1; V to a preferred arrangement of the invention. ‘In general, a strip supply depot is indicatedat Figure 2a is a continuation of'Figure 2, the 55 A, from which one or more strips are paid suc 3 2,409,770 cessively through an aligner B, a connecting unit 0, intermittently actuated pinch rolls D, from which the strip is guided past an accumulator pit F by aligner units E and G. From thence, the strip is passed through cleaning, rinsing, and drying units H, J, and K, through aligners L to a series of pinch rolls M1 through M7, which are adapted to accommodate one or more strips of 4 strip, is a pair of transversely extending plates 5 and 5’, which are secured to the uprights 2, closely adjacent the ball bearing rolls already described. As will be observed in the plan view of Figure 5, these plates are provided with a plurality of holes 6 which provide bearings for vertical pin members I, which pins can be selectively arranged in the holes in any number required to effect lateral varying widths, and which are regulative indi spacing and restraint of the strips. vidually to determine the rate of movement of 10 The tail end of one strip is fastened to the lead each of the strips through the system, as will be end of a new coil in any suitable manner, as has described in detail hereinafter. From the pinch been indicated by the articulator C, which may be roll unit M the strip is conducted through align a device for welding the strip together in any ers N and 0, through a heating zone P, which approved manner. is here illustrated in a form of catenary furnace. 15 Immediately following the welder there are ar From the catenary furnace the strip is passed ranged the welder pinch rolls D, which are shown through a cooling zone Q, thence through other in greater detail in Figures 6 and '7. It will be aligners and guide means R and S, to a master seen that this unit comprises a pair of housings pinch roll unit T, from whence it is directed over Ill having an upper roll I I revolubly journaled an accumulator pit U, and thence to the take—ups 20 therein on stationary bearings l2. The lower roll Xl through X7 through guide and control means !3 is revolubly journaled in the housings it] upon V and W, all of which will be described more slidable bearings 14 which are adapted to be fully hereinafter. raised and lowered toward and away from the As an example of the capacity and ?exibility upper roll H. The slide bearings M of the lower of one apparatus built in accordance with the 25 roll are actuated by a plurality of arms i5 which present invention, similar to that shown in the are fulcrumed to the housings ID by pivotal bear accompanying drawings, such a line has been de ings It so as to be moved to raise and lower the signed to handle from one strip 30" wide to seven slide bearings I 4 .by a ?uid cylinder and piston strips 6" wide, or narrower. It will, of course, arrangement ll. A motor I8 provides power to be understood that there is nothing critical about each of the rolls H and I3 through a suitable these dimensions, these being but illustratory of reduction gear unit I9 and drive couplings 20. one arrangement, and capable of being varied \The normal position of the lower roll is one of within wide limits for the accommodation of a spaced relation to the upper roll so that, nor greater or lesser number of strips of diiferent mally, strips being moved through the line will widths than those here speci?ed. In any case, pass between these rolls without contact there the number of strips usuallyr depends on the in with, at which time the rolls are idle. When any dividual widths of each, as dictated by the re one of the strips being run nears the end of its quirements of the orders being ?lled, and as ap length, the lower roll is raised by the fluid cylin plied to and limited by the capacity of the par der ll so as to squeeze the strips. Simultaneously, ticular design of line employed. In furtherance 40 the motor [8 is energized to drive the rolls H of the example given, however, the total strip and I3 at surface speeds greater than the normal width will not exceed 42". Stated another Way, rectilinear speed of travel of the strip, whereby the width of the area occupied by all of the strips, an amount of slack strip is induced to fall in the which includes the spacing between adjacent accumulator pit F. The pinch rolls continue to strips, will not exceed 60". Within those limits, drive in this fashion until the end of that strip, or within greater or lesser limits for equipment which is about to become exhausted, reaches the especially designed therefor, any combinations of connecting unit C, whereupon the pinch rolls D widths of strips may be run. are automatically stopped but remain closed to Referring once again to the drawings, the sup secure the several strips, and particularly the ply depot A may comprise a plurality of hori 50 length being operated on by the articulator, from zontal floor stand type reels I for serving strips being pulled forward into the slack pit F by their to the line, seven in number having been shown own weight. After the connecting step has been so as to be consistent with the example already completed, the pinch rolls D are allowed to as given. These may be of any approved construc sume their normal inactive open position in order tion and may be varied to suit the taste of the 55 to permit the resumption of the feeding of the operator. strips from the supply depot A. From the reels I, the strip is passed through It will be observed that this arrangement ren aligning device B which, in construction, corre ders unnecessary the stopping of the strip beyond sponds to aligners L, N, O, and B, so that one de the accumulator pit during the connecting oper scription should suffice for all. By reference to 60 ation since, while this is going on, the remainder Figures 3-5, each aligner is comprised of side of the line beyond the looping pit F continues to frame members 2 which are set upon suitable operate at the ordinary speed, using the slack mountings or bases 3 adjacent the ?oor, each strip accumulated in the pit F until the connect side member in relation to the other being spaced ing operation has been completed. With respect therefrom so as to straddle the line of passage 65 to the accumulator pit F, it is desirable that this of the strip. A pair of rolls 4 are journaled for be provided with a wooden lining 30 to prevent rotation in the side frames 2, and are preferably marring the surface of the strip. Also, it is de provided with ball bearings so as to offer the least sirable that the strip be led into and withdrawn possible resistance to the passage of the strip from the pit by guide devices E and G which therethrough when they are pressed in engage 70 comprise a plurality of rolls 3i , so spaced to pre ment therewith in performance of their ?attening vent any sharp bends or breaks in the strip and function. These rolls are preferably idle. which may be provided with vertically arranged Mounted upon the strip approach side of these spacers 32 similar to those previously described aligning rolls. and arranged so that one falls in the case of the aligner B for preventing the above and one falls below the passage of the 75 lateral displacement of thestrips.