US1316297A

US1316297A - Aet of hep airing etjbnace-booi s

Info

Publication number: US1316297A
Authority: US
Publication date: 1919-09-16
Anticipated expiration: 1936-09-16

Description

UNITED STATES PATENT onirica.

BENJAMIN GOLD, OFl HOBART, INDIANA.

ART REPA'IRING FURNACE-ROOFS.

Application led April 11, 1919. Serial No. 289,338.

To all 107mm t may concern:

Be it'known that I, BENJAMIN GOLD, a subject of the King of Great Britain, residing at Hobart, in the county of Lake and State of Indiana, have invented a new and useful Improvement in the Art of Repairing Furnace-Roofs, of which the following is a specification.

As a preface to the description of my invention, it may be stated that in the ofperation of furnaces, as, for example, openhea-rth furnaces, the heat to which the roofs thereof are subjected sooner or late-r burns out portions of the roof structure, requiring the repairing thereof. Sometimes the burned out portion extends entirely through the upper surface of the roof, and sometimes short thereof, and, in the repairing operation, the impaired portion of the roof is eut out and back to a point where the roof is thickest. Centerin'g is then placed adjacent to the opening to be filled and the repairing material, as, for example, refractory bricks, are filled into the opening upon the centering, it .being understood that such repairs are made as soon as possible after the furnace has ceased to be fired.

My primary object is to provide improvements in the art referred to whereby the labor cost of repairing the roof will be very greatly reduced, a great saving in time and material will be effected, and, in general, a better j ob result, the brick-layer will be protected from the heat of the furnace, which may be relatively great during the repairing operation, the repairs may be made while the furnace is very hot compared with the heat of the furnace when repaired in accordance with prior methods; and the spalling off of the bricks 4will be prevented.

Referring to the accompanying drawings, Figure 1 is a cross-sectional view of a furnace structure illustrating it in the process of being repaired in accordance with my invention, the section being taken at the line 1 1 on Fig. 2 and viewed in the direction of the arrow. Fig. 2 is an enlarged section taken at the line 2-2 on F ig. 1 and viewe-d in the direction of the arrow. Fig. 3 is a perspective view, with parts broken away, of one of the similar hanger units illustrated in Figs. 1 and 2, Showing the parts in disassembled relation. Fig. 4 is a plan view of the lower cross-bar of the unit, and the locking rod for holding it at one end, the

latter being shown in an intermediate posi- Y tion. Fig. 5 is a view like Fig. 1 showing a modification of -thehanger unitsthe vsection being taken at the line '5-5 on Fig. 6 Iand viewed in the direction ofthe arrows; and Fig. 6, an enlarged section taken at the line 6 6 on Fig. 5 and viewed in the direction of the arrows. l i

Referring particularly to Figs. 1 to; 4, in-

elusive, a furnace, the roof of which is to be l..

repaired, is represented at'?, the roof being indicated at 8 and shown of arched form transversely yof the furnacev structure. :The

dotted line 9 represents, by way of example,

the inside lof the roof where it is partly burned out and is to be repaired, the roof a-t this point, in accor-dance with common practice being removed to provide the rectangular-shaped opening 10 forming ,the

void to be filled, for effecting the repair.

This being done, the operator positions in the opening 10, and preferably in spaced relation, hanger units which are supported from the roof at opposite sides of the opening, by resting upon the upper surface of the roof, and present a support for a plate or plates 'by preference ofmetal, which form a centering and extends to a point adjacent the underside of the roof 8. lThe centering thus provided forms a support upon which the bricks, or other material, for filling the opening. 10 are placed. i

The hanger units above referred to, and in accordance with the showing in Figsl to 4, inclusive, are `each formed of a pair of side-bars 11 and 12 provided at their upper ends with outwardly-extending anges 13 and 14, respectively, and with a lower crossbar 15,` which is pivotally connected to the lower end of the bar 11, as by means of the hinge joint 16, and -at its opposite end Iis connected indirectly with Athe bar12 through the medium of a rod 17 rotatably mounted in

bearings

18 and 19 secured tothe bar 12, the lower end of the rod 17 being provided with a. cross-piece 20 whichv is adapted in one position of the rodk 17 to be inserted where itis thus provided the bar l1 is preferably equipped with lribs or lugs 22 Yspaced apart vertically on itsv outer `face where itV opposes a wall of the opening 10.

In the repairing of` thev furnace Vroof as 't'roduced vinto vthe opening 10 from the top of the roof 8 to a position in which these units rest at their flanges 13 and 14- upon the portions of the roof surrounding the opening l'Oas'illustrated. The workman Vthen lays across the cross-bars 15, to form the centering hereinbefore'referred to, a plate or plates, preferably ofniet-all, such a plate being'representedat 23 and the repairing material filled iiito the opening" 150, as'hcreinbcfore stated, in the particular arrangement now being "described,I Vthe hanger units being removable, after the repairing job has been completed.v This is accomplished by the workman rotating' the rods 17 to cause the cross-members QO'to register with the openings 21", afs shown in Fig. il, which permits the cross-bars 15 to swing downwardly von their hinges 1G7 the centering 2 3 dropping into the furnace, the bars 11, with the Acrossrnembers 15 hanging from them then being liftednpwardly through the roof, and, liliewise, the part l12, with the rods 17 thereon. 'lhe ar angement'shown in- Figs. 5' and 6 constitutesv` a change in the hanger units onlyfthese units represented' at '2i being formed asV integral structures instead of separable parts, as in the construction of the preceding'fig'ures. In this arrangement,the hangers'and centering would remain in the roof until burned'ai'vay.

"It will be noted from the foregoing that the workmen in repairing the roof. are stationed atV all-l timesexteri'or of the furnacechamber and that the centering serves a shieldfto protect the worlimenvagainst the heat of the furnace. i'

Furthermore, by repairing a furnace in accordance with' my invention the repairs may lbe 'effected very 'expeditiously and while the furnace isr relatively hot,v especially be'- cause of the fact that the hanger unitsl may be quickly applied, tooperative position in the opening rto; be filled with the repair inateria'l, thereby saving'fthe time of the workmen' and ,minimizing the time during which the furnace is idl e,with consequentsaving in expense of'labor and operation.` *The centering, when of metal, also serves the-'useful function of permitting the fresh material filled vinto the'opening' 10 to be gradually heated, when the furnace is ref-fired, vwith the result of preventing spalling yof the mate-v rial, and bythe time the centering has melted away, wherel itis permittedto' remain AQqpiefs of this patent :hay be obfainecl vfor five cents each, by f f wanxmgtonfn. er

in the position shown in the drawings, the repairing material has become heated to such a degree that spalling will not thereafter take place.

' Furthermore, by supporting thel hanger units as by the flanges 13 and lll resting upon theupper surface of the roof, these units arel caused to take positions substantially conforming to the curvature of the upper surface of the arched roof, the center'- ing thereby also becoming arched, as shown in" Figs. 1` and 5, wherebythe repairing lua- A terial7 when inr brick for-in, willy substantiall y conform at its upper and lower surfaces with the arc-shaped top and bottom surfaces ofthe roof' and thus produce-v a` neat job.

What Iregard as new and desire to secure by Letters patent is-a 1.-' The method of repairing furnace-roofs which consists'in introducing from the top of the roof into the opening" to be filled to extend across the opening and be supported on: the upper surface ofv the roof at the opposite sides of the' opening, hanger-units in a condition in which theyform supports for centering, and thereupon introducing into said opening andfupon said centering the material for iillingsaid opening.

2. The method of repairing furnace roofs which consists in introducing from thetop ofthe roof into the lopeningv to bek filled' to extend across theA opening and be' supported on the upper surface 'of the roof at the opposite sides. of the opening, hanger-units in a condition in which they form supports for centering, applying` centering to the hangerunits and thereafter introducing into said opening and upon said centering the material for lillingsaid openino'.

3. A hanger comprising a pair of bars, a cross-bar, said bars having portions at which they are adapted` tobe supported at the edge of anopening in a roof,A said cross-bar being flexibly connected at one end with the lower end of one of the bars of said pair of bars, and means for releasably connecting said cross-bar at its opposite end with the lower end of the other bar of said pair thereof.

t .4. hanger comprising a pair of bars, a cross -ba'r, lsaid lbars having portions at which they are adapted to be supported at the edges of an opening in a roof to beV ropaired, said cross-bar being connected at oneend with the lower end of one of the bars of said pair of bars, and means for releasably connecting said cross-bar at its opposite end with the lower end of the other bar of said pair of bars, said means extending to a point adjacent the upper end of the adjacent bar for voperation to release said cross-bar.

" BENJAMIN GOLD.

addressing the Gomm'issioner of Patents.