US2131829A - Coke oven door - Google Patents

Description

'Oct 4, 1938. wlLpUTTE 2,131,829

COKE OVEN DOOR Filed Jan. 9, 1935 2 Sheets-Sheet 1 ATTORN EY oct. 4, 1938. L WILPUTTE 2,131,829

vCOKE OVEN DOOR v Filed Jan. 9, 1955 2 Sheets-Sheet 2 vll/ll lll/lll.

Bymww ATTORNEY Patented Oct. 4, 1938 PATENT OFFICE COKE OVEN DOOR Louis Wilputte, New Rochelle, N. Y.

Application January s claims.

The general object of the present invention is to provide improvements in door construction primarily devised and adapted for use in the socalled plug doors employed to removably close the ends of horizontally elongated coke ovens.

More specifically, the object of the invention is to provide an improved door of the known socalled self sealing type comprising rigid metallic outer door element or section, an inner refractory plug section of the door L, and a suitably flexible metallic sealing element or section. In the closed position of such a door, the plug section extends into and substantially fills an end portion of a i coking chamber, and the sealing member is in l5 sealing engagement with a metallic door frame member forming a rigid, though preferably removable, part of-the oven structure at the margin of the end of the corresponding coking chamber.

The present invention is characterized in particular by the form and construction of the sealing element or section of the door. In its preferred form, the sealing element consists of a metal plate having a substantially fiat body portion and an integral rim portion extending transversely away from the inner side of the body portion at the margin of the latter. In the closed position of the door, the body portion of the sealing member extends across the door opening and has the free edge of itsrim portion in engagement with a sealing surface on the door frame member extending around the door opening. The integral rim portion of the improved sealing member replaces flanged bar doorframe engaging parts formed separately from, and attached :l5 to a sealing plate body member, heretofore used in doors of the type directly improved upon. The elimination of lsuch separately formed iiange bar parts simplifies the door construction, reduces the amount of material required in its construc- 40 tion, and substantially reduces its fabrication cost.

The present invention lis further characterized by novel connections between the rigid outer frame section of the door and the sealingplate 45 employed to distort the latter as required to insure its proper sealing engagement with the door frame member, which in use is distorted relativeV to the rigid outer frame section of the door, by the thermal and mechanical stresses to which the 50 parts,v and particularly the door frame member, are subjected in use. My improved door includes clamping screws distributed along the margin of the sealing member, but my improved construction differs from prior constructions including 55 such screws, by its inclusions of provisions which s, 1935, serial No. 977

(ci. 2oz-24s) I have devised for the easy and quick removal and replacement of the clamping screws, to thereby facilitate the assembly and disassembly of the door, and in particular, the removal of the sealing member for repairs or replacement.

In the preferred form of the present invention, each of said clamping screws engages the sealing member through a suitably shaped lug or pad part welded to the outer side of the sealing member, `and engaging a small portion only of that member, so that it does not interfere with the general flexibility of the member, while providing all reinforcement needed as a result of the action on the member of the corresponding clamping screw. f

My improved door, in its preferred form, is

\ also characterized by the novel manner in which the bricks or refractory blocks forming the body portion `refractory plug section of the door, and the means for directly supporting and holding said bricks or blocks in place, are formed and arranged.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described a preferred embodiment of the invention.

Of the drawings:

Fig. 1 is a side elevation of a portion of a coke oven battery;

Fig. 2 is a vertical section on the line 2-2 of Fig. 1;

Fig. 3 is a section on the line 3 3 of Fig. 1;

Fig. 4 is a partial section on the line 4-4 of Fig. 3: Y

Fig. 5 is an elevation of a portion of the door as seen from its inner side;

Fig. 6 is an elevation of a blank from which the flexible sealing element of the door may be formed; and Fig. '7 is a partial section taken similarly to Fig. 3 illustrating a modification.

The coke oven illustrated in the drawings is one comprising horizontally elongated coking chambers A and heating Walls B arranged side by side in a row in which the coking chambers alternate with the heating walls. The coke oven masonry is reenforced and supported at the sides of the battery by a metallic armor, shown as comprising a flash plate Cat each heating wall end, and a corresponding vertical buckstay D by which the flash plate is held in place. At each end of each coking chamber end is a door frame member E. The latter preferably, and as shown, is in the form of a one piece casting extending around the door opening, and of substantial horizontal depth measured in the direction of the length of the heating walls and coking chambers, the heating walls being recessed at their vertical corners as indicated at B' to receive inner portions of the corresponding door frame members E, each of which extends into the oven structure and provides a metallic lining for the corresponding coking chamber end.

As shown. each door frame member E is anchored in place by adjustable clamping connections between its sides and the adjacentv buckstay members D. The clamping connections shown comprise parts d Welded to the buckstay members, and clamping levers F and bolts G. Each clamping lever F engages the corresponding door frame member E at one end, and at its opposite end engages a corresponding part d, and is subjected to a suitable clamping force by means of the corresponding clamping bolt G, which acts between the lever F and the corresponding part d. In the construction shown, each door frame member E includes adjustable flange portions e at its sides which abut against adjacent edge portions of the adjacent iiash plates C. The features of coke oven construction and arrangement illustrated in the drawings and hereinbefore described, include special features 0f construction and arrangement disclosed and claimed in my prior application Ser. No. '732,023 led June 23, 1934, which forms no part of the invention disclosed and claimed herein, said invention being adapted for use in coke oven structures including none of the special features of said prior application.

In the form illustrated in the drawings, each door comprises a rigid outer metallic frame section, which in the particular form shown, includes vertical channel bar members H at the opposite sides of the door, top, bottom, and one or more intermediate cross frame members H', and other cross frame members I-I"` and H3, the cross frame members being welded at their ends to the side frame members H. 'Ihe cross frame members H2 provide anchorages for the pivot pins I' on which are mounted door locking levers or latch bars I, which may be turned into and out of engagement with the latch hook members II welded or otherwise suitably secured to the corresponding door frame member E, to thereby lock the door to and unlock it from said door frame member. The cross frame member H3 is provided for engagement by an operating part of the usual door handling machine (not shown), employed to move the door into and out of its normal closed position in which the door extends into the doorway.

'I'he intermediate flexible plate section or element of the door, in the form shown, comprises a one-piece part K of metal plate, which may be a quarter of an inch or so thick, and includes a substantially fiat body portion, which in the closed position of the door extends entirely across the door opening, and an integral inturned rim or flange portion K', at the margin of said body portion, which then engages the sealing surface E' formed on the corresponding door frame member E. The member K may be formed from a flat blank shaped as shown in Fig. 6, by bending the marginal portions of the blank transversely of the plane of the blank, to form the transversely extending rim portion K'. The blank shown in Fig. 6 is so bent along the side and top and bottom lines K2 and K3 shown in Fig. 6, and thereafter each top and bottom rim end portion K4 is welded to the corresponding end K5 of a side rim portion brought into proximity therewith by the bending operation. In some cases the rim may be formed in whole or in part of strip material welded to the door plate, but in such cases the parts are preferably so welded together as to give the sealing member substantially the same form and ilexibility as the above described member formed from a one piece blank.

The plate member K is connected to and suspended from the outer frame section of the door at or adjacent the top of the door, by means shown as including a horizontal shaft L, passing through and supported at its ends-by heavy plate or lug parts welded to the base portions of the channel bars H forming the side members of the rigid outer door frame section. The shaft L also passes through openings in brackets or lugs Ks secured to the upper portion of the plate K, said openings preferably being horizontally elongated as shown. 'I'he lugs K's are welded or otherwise secured to a horizontal channel bar K.'z secured to the plate K by bolts Ka which pass through the base portion of the channel bar K" and through the plate K and through a flange M' of a casting or other heavy metal part M thereby secured to the plate K. The member M extends into the oven chamber when the door is in its closed position shown in Fig. 2.

The means provided for distorting the sealing member K as required to insure proper engagement of the sealing edge of its rim K' with the sealing surface E.y of the door frame member E, notwithstanding the deformation of the latter which occurs in use, comprises a multiplicity of horizontal clamping screws N connecting the sealing member, at suitably distributed points along its margin, to the rigid outer frame section of the door. As shown, each clamping screw has a head N received in an open ended recess O in a corresponding small pad or reinforcing part O Welded to the outer side of the member K adjacent the margin of the body portion of the latter. An open ended slot O2 is formed in the outer wall of the recess O' to receive a reduced neck portion N2 of the screw N. Longitudinal movement of the latter in either direction may thus produce a corresponding movement of the adjacent portion of the sealing member K.

The threaded outer portion of each screw N passes through a corresponding nut P, and through the adjacent flange of the corresponding frame member H, or H', to which the nut P is detachably secured by bolts P'. 'Ihe outer frame member ilanges are formed with open ended slot H5 to receive the clamping screws N, so that when the corresponding bolts P' are removed, each clamping screw N may be removed bodily by a lateral movement, without requiring the screw to be separated from its nut P. In the normal condition of the apparatus, each clamping screw N may be anchored in place by a lock nut N3 threaded onto the screw, and acting on the corresponding outer frame member flange through a suitable washer N.

The bricks or refractory blocks Q, Q' and Q2, constituting the body portion of the plug section of the door, are stacked up on a rigid supporting member R secured to the inner side of the body portion of the member K adjacent the lower end of the latter. As shown, the member R comn prises a horizontal portion R' on which the brick parts are stacked, and which, in the normal closed position of the door, rests upon the door sill portion e' of the door frame member E. The member R also comprises an uprising portion R2 adjacent the plate K and detachably connected to the latter by bolts R2. Advantageously, also, the member-P includes gusset or side plate portions R4 at the opposite side edges of the door between which the brick parts at the bottom of the stack are received. The brick supporting portion R of the member R is formed at its upper side with a recessed seat R5 for a metallic post S. The latter extends to the top of the plug section of the door, and has its upper end loosely received in a recess M2 formedfor the purpose in the previously mentioned part M. In the preferred construction shown, the post S is of T bar cross section with thebase of the section at the side of the post remote from the sealing member K. 2

The brick parts Q, Q' and Q2 are suitably shaped to interlock with one another and with the post S which they collectively surround. As shown, one brick part Q and one brick part Q' are located at each of a plurality'of diierent levels and constitute the body portion of the plug section brick work. One of the two parts Q and Q' at each level extends from one side of the plug section of the door into overlapping relation with the'post S and into abutting relation with the other part of the pair, which is also in overlapping relation with the post S. and extends to the opposite side of the door. As shown, each of the parts Q and Q includes a portion q at the outer side of the door extending into proximity with the Web or leg of T bar section of the post S, and extending in front of the corresponding portion of the head of the post section. Each br'ick part Q' includes a portion at the inner side of the post extending past the latter.

The brick parts Q and Q are each recessed to receive a corresponding portion of a corresponding brick part Q2 by which the brick parts Q and Q' are locked in place about the post S. As shown. the bricks Q and Q' in each of two adjacent horizontal layers or courses, collectively form a horizontal channel extending from the inner side oi the door to the adjacent side of the post S, and shaped to receive and be filled by a corresponding brick part Q2. Each brick part Q2 is formed with iiange portions or ribs extending horizontally in the direction of the door axis and projecting away from the top and bottom faces of the brick Q2 at the side edges of the latter. Each brick Q2 is thus in effect a tenon dovetail part interlocking with two brick parts Q and two brick parts Q', all of which are thereby held against signiiicant horizontal movement relative to the post S. Since in the normal manipulation and use of such doors the latter are maintained vertically or substantially so, it is not necessary to provide interlocking provisions preventing horizontal movement of the locking brick parts Q2 away from the T bar S, between which and the inner face of the plug door section, each part Q2 extends. Friction is suilcient to hold those parts in place, even though the plug section brick lparts are not laid with mortar, which may or may seat for the upper end of the post S might be formed by a recess in the Acasting h, but I consider it preferable to provide a special part M as shown, in which the upper end of the post has its seat. In the preferred construction illustrated, the top bricks Q and Q and a portion of the interlocking brick Q2 are above the top of the post S, the

ness may advantageously be interposed between the post S and the adjacent brick surfaces in the initial assembly of the door. To insure suiilcient flexibility and freedom for adjustment of the sealing member part K, the latter is suitably spaced away from the outer face of the plug section of the door, and to this end cardboard of suitable thickness may well be interposed between the plate K and the plug section of the door in the initial assembly of the latter.

Formed as described, the plate member K includes no parts not necessary for the attainment of, or interfering with its intended functions, and is characterized by the simplicity of its construction and the inherent relatively low cost of fabrication, as well as by the omission of parts interfering with the desired exibility of the member. Aside from the proper location of a few bolt holes through it, the only precise or accurate machining operation required for the production of the member K is confined to the shaping of its sealing rim edge, which ordinarily is' chamfered as shown. The pads O are relatively inexpensive to construct and attach to the member K in the manner described, and provide the latter with all of the local reinforcement needed when the member is being bent by the action of the screws N to bring the sealing rim edge in contact all along its length with the sealing surface on the door frame member. While the padsO thus provide the neededv local reinforcement, they do not interfere slgnicantly with the `desirable general exibility of the plate K.

In the modified door construction illustrated in Fig. 7, the vertical side members HA of the outer frame section of the door have smooth outer side faces H4 to accommodate the attachment thereto of members PA. 'I'he latter are employed in lieu of the nut members P of the construction shown in Figs. 1 to 4. As shown, the members HA are channel bars with the flanges of each member extending toward the other member. 'I'he devices PA differ from the devices P primarily in that they are clamped against the outer side faces H4 of the members HA. l vEach part PA comprises a body portion seating against the face of the corresponding member HA and secured to the latter by one or more bolts P2 extending through the body portion of the member PA and the base web of the' channel bar member HA. Each part PA also preferably includes a flange or projection P3 which overhangs and abuts against the inner edge of the member HA. Each part PA is also formed with projection P4 extending away from the door, and formed with threaded aperture to receive the corresponding screw N. The latter has its head anchored in the corresponding ilexible plate carried part 0.

As will be apparent, the members PA may be disconnected from the frame section of the door more readily than can the parts P of the construction first described. With the parts PA arranged as shown, the clamping bolts N may readily be adjusted by an ordinary socket wrench. 'I'he fact that the frame members HA with their inturned flanges do not overhang the bolts N and corresponding portions of the door, sealing means facilitates visual inspection of the sealing provisions, and the detection of leakage conditions which make adjustment of the bolts N necessary. This is especially desirable with door frame members of the general character shown in Fig. '7, which differ from the members E of the construction first described, in that they extend more deeply into the oven masonry, and provide less clearance between the rim portion K1 of the sealing member and the door frame portions alongside that rim portion. As those skilled in the art will understand, the door frame members EA are of a type and form heretofore employed with clay iuted doors.

The plug section of the coke oven door illustrated and described herein comprises novel features not claimed herein, but claimed in my copending application, Serial No. 156,453, filed July 30, 1937, as a division and continuation in part, of this application.

While in accordance with the provisions of the statutes, I have illustrated and described the best forms of embodiment of my invention now known to me, it will be apparent to those skilled in the art that changes may be made in the form of the apparatus disclosed without departing from the spirit of my invention as set forth in the appended claims and that in some cases certain features of my invention may be used to advantage without a corresponding use of other features.

I claim:

1. In a self-sealing door, the combination with an inner plug section and an outer rigid frame section, of a flexible sealing plate section, reinforcing parts attached to the outer side of said sealing section adjacent and distributed along its margin and each formed with an open ended undercut slot, an adjustable clamping connection between each reinforcing part and said frame section comprising a clamping bolt hav.- ing its head received in the said slot, a nut through which the body of the bolt is threaded and means detachably securing said nut to said frame section.

2. In a self-sealing doorl the combination with an inner plug section and an outer rigid frame section, of a flexible sealing plate section, reinforcing parts attached to the outer side of said sealing section adjacent, and distributed along its margin and each formed with an open ended undercut slot, an adjustable clamping connection between each part and the outer door seetion comprising a clamping bolt having its head received in the said slot, a nut through which the body of the bolt is threaded and means detachably connecting said nut to said frame section, the latter being formed with an open ended slot for the passage of each of said clamping bolts to permit lateral movement of said bolt away from said frame section when the corresponding nut is disconnected therefrom.

3. In a self-sealing furnace door, the combination of an inner plug section, a rigid outer frame section comprising side members and intermediate flexible plate sealing parte extending lateraliy beyond said members at the sides of the door, and threaded clamping connections between said members and portions, each of said connections including a part bolted against the outer side/face of the corresponding member and a clamping bolt threaded into said part and detachable with the latter from said frame section.

4. In a self-sealing door, the combination with an inner plug section and an outer rigid frame section, of a flexible sealing plate section, reinforcing parts attached to the outer side of said sealing section adjacent and distributed along its margin and each formed with an open ended undercut slot, an adjustable clamping connection between each reinforcing part and said frame section comprising a clamping bolt having its head received in the said slot, a nut through which the body of the bolt is threaded, and means detachably securing the clamping connection nuts against outer side portions of said frame section.

5. In a self-sealing furnace door, the combination with an inner plug section and a rigid outer frame section of a flexible sealing member comprising a metallic plate-like body portion projecting laterally beyond the lateral edge of said plug section and a rim portion extending transversely away from said body portion at the innerside of, and adjacent the marginal edge of said body portion and terminating in an inner sealing edge portion of reduced thickness, said rim and body portions having an integral connection extending continuously along the marginal edge of said body portion, and uniting to form a one piece sealing member -of substantially uniform thickness in all portions thereof, except said sealing edge portion.

6. In a self-sealing furnace door. the combination with an inner plug section and a rigid outer frame section, of a flexible sealing member comprising a metallic plate-like body portion projecting laterally beyond the lateral edge of said plug section and a rim portion extending transversely away from said body portion at the innerside of, and adjacent the marginal edge of said body portion, said body and rim portions being] unsevered portions of a one piece blank of sheet metal bent to dispose said portions transversely to one another.

7. In a self-sealing furnace door, the combination with an inner plug section and a rigid outer frame section, of a flexible sealing member comprising a metallic plate-like body portion projecting laterally beyond the lateral edge of said plug section and a rim portion extending transversely away from said body portion at the innerside of, and adjacent the marginal edge of said body portion and terminating in an inner sealing edge, said rim and body portions being unsevered portions of a sheet metal blank bent to dispose said portions transversely to one another, 'reinforcing parts welded to the outer side of said body portion at, and engaging the latter only at distributed points along its margin, and adjustable clamping connections between said parts and said outer frame section.

8. In a self-sealing furnace door, the combination with an inner plug section adapted to extend into the doorway, in a door frame having a sealing surface at the margin of doorway and a rigid outer frame section, of a exible sealing member comprising a metallic plate-like body structure of bent plate form and of substantially uniform thickness in all portions thereof except said sealing edge portion, reinforcing parts welded to the outer side ci said body portion at, and engaging the latter only at distributed points along its margin, and adjustable clamping connections between said parts and said outer frame section, said body portion being movable toward and away from said plug and frame sections throughout the major portion of its extent. lo

LOUIS WILPUTTE.

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