Патент USA US2122032код для вставки
June 2,3, 1938- ' M. w. GOLDBERG El‘ AL I 2,122,032 COVERED LADLE Filed June 15, 1936 IIIHH. /d 8 > cum/1mm 1/ 5 M " ‘ ATTORNEY-é - Patented June 28, 1938 I 2,122,032 UNITED Es PATENT . OFFICE‘. '; 2,122,032 COVERED VLADLE ’ ' Max wlGoldberg'and Wallace - Drissen, ’ r Port Washington, Wis. ‘ Application June 15, 1936,'Serial No. 85,287 , (01. 22+-81) ' 2 Claims. Position.‘ ~ ' ' " f cluding the steps of inserting ?re brick of less size‘ than the cover adjacent theinner side there , which hold only a limited quantity of molten of, and‘?lling the spaces between said-brick and metal. Necessarily, therefore, these ladles must cover ?anges withrefractory ‘material of’ differ _ be frequently re?lled and a large number kept in constant use'in order 'tohandle moldv require ' an improved method of lining ?anged covers in Heretofore, in foundry practice, it has been customary to utilize relatively small sized ladles 10 ments. ' A further object of the invention is to provide plication‘ Serial No. 73,829, ?led April 11,’ 1936'. f 7:5 ; I the ‘brick and cover to-‘further holdthe brick in This invention relates‘ tov improvements in‘ cov ered ladles, ‘and is a" continuation in part of ap I a ' , ent composition than said brick. Thus, a relatively large number of at tendants are needed to take care of the plurality of small ladles, which results in high overhead. A still further object of the invention. is to pro-' 10 Vide a method of lining ?anged covers as above described, including the additional step of taper It has been impractical heretofore to utilize ladles ~ ing the side‘ edges of the slab of ?re‘ brick so that of larger size as the large quantity of molten when the refractory material is packed between ‘ 15 metal would radiate an excessive amount of heat, making it impossible for, attendants to remain near, enough to take care of the pouring opera tions. Furthermore, inlview of the large capac ity, the ladles could, not,v be emptied rapidly 2O enough to prevent solidi?cation therein. ' In applications Serial Nos. 746,042, 43,146, and ‘73,829 there are disclosedmeans rendering the employment of large ladles entirely practical through the use of an insulated protecting cover v25 ' and through theuse of means forrfacilitating the opening and closingof said cover. ' The present invention relates more particularly to the cover itself and to the manner of insulating'the same. The vinsulation of the ladle covers has occa 30 sioned considerable difficulty “ heretofore. Fire position. ' ' ‘ _ With the above and other objects in'view, the invention consists of the improved covered ladle and_,_a1l its. parts- and combinations as set forth 20 in the'claims and all equivalents thereof. In the accompanying drawing illustrating one complete ‘embodiment of the preferred form of I the invention; Fig. ~1 is a plan View of the improved ladle position of the operating handle showinghow said handle is used to move the cover, and. the dot-and-dash line position of ‘thecover' handle showing how said handle is used to lock the cover 30 in closed position; a ?re brick is made ofthe exact size of the cover, it is found that the‘ difference in coe?icient of ex pansion between the metal forming the cover the dot-and-dash lines showing the cover in ‘open, therefor sets up stresses which, result in breakage of the lining. Furthermore, due to the fact that these ladles and covers are furnished in a wide assortment of sizes, it is impractical and costly to have ?re brick of the exact size and shape for ‘ each of the various sizes of covers. 25 showing the cover in closed position, the full line brick is a desirable insulating material, but when 35 proper and the ?re brick forming the lining 40 said tapered edges and the ‘cover ?anges, there will be an interlock to hold the two materials in ' 1 " _, ,1 Fig. 2 is a side elevational‘ view of thela'dle, ‘ Fig. 3 is a fragmentary sectional view taken 35 on line 3—3 of Fig. 1; and . ‘ v V Fig. 4 is a bottom View of the cover alone. ‘ , Referring more particularly‘ to the drawing, the muneral 5 designatesv afladle of desired form. In View of the fact that the ladles comprehended 40 'by the present invention are of relatively; large size, it is desirable that the same be‘ insulated, ' It is an object of the present invention to pro-- ' preferably in the manner disclosed in co-pending vide an improved lining of insulating material application, Serial No;47,560. _. I for ladle covers wherein the majority of the lin The ladle is preferably formed with an up 45 ing is composed of ?reibrick and wherein other material is employed around the ?rebrick in such a way as to readily adapt a slab of ?re brick of one size for use in lining covers of various v50 55 sizes, the joint between the ?re brick and other ‘material permitting a normal amount of expan standing circular rim 6, with agpouring'spout 'l and with side trunnions 8/ A bail frame 9 in cludes side bails having hook-shaped, lower ends II] for engagement with the trunnions 8, and an 50 I2 which are preferably , upper transverse bar H. _ Guiding members sion to take place without disrupting the cover. A more‘speci?c object of the invention is to tubular in form, are suitably secured to upper side portions of the ladle .as at l3 and i4, and said providein combination a ladle, a metallic cover therefor having’ depending edge ?anges, insulat— members are disposed in an inclinedposition vas is clear from Fig, 2. One of the guiding members ’' ing brick of less size‘ thanxthe cover positioned adjacent the inner side thereof, refractory mate for a purpose to- be’ hereinafter described, rial of different composition than said brick ?lling the spaces between said brick and cover ?anges, and-metallic securing-means extending through I2 may be provided with a tubular extension l5 , The ladle cover designated generallyby the nu meral l6, comprises ‘a top disc of metal ll and a surrounding depending flangel?z" The front of 60 2. 2,122,032 the cover is preferably straight as at I9, and the rim I8 is tapered in the front as at 20 so that an operator standing at the rear of the ladle may at all times see the spout while pouring is being accomplished. If the rim portion 20 were ver tical, it would, in'some positions, obstruct the at tendant’s View. , Welded to opposite sides of the cover toward are then threaded on to the bolts and tightened to hold the ?re brick in position. Next ?re clay or other refractory material is packed while in plastic condition between the edges of the ?re brick and the cover rimla's at 34“ and. permitted to harden‘. Due to‘ the bevel 30 on the ?re brick, "interlocking will take place between the edges of‘the ?re brick and the hardened refractory the rear thereof are lateral extensions .2 I-—,.and- to’ -material 34 to hold the two materials in position. each ‘of these extensions one end of a rod 22 is After the bolts are in place it is desirable to 10 rigidly secured. The rods normally extend at an ?ll"the' recesses 3|.. with refractory material as incline corresponding to the incline of the guide at 35. It- is also preferred to weld or otherwise tubes I2, said rods being slida-ble in the tubes as is I secure a ledge 36 in position below the refrac clearly indicated in Fig. 2. 15 At the rear of the cover is a short section of horizontally disposed metal tubing 23,» and a handle 24 having a projection 25 at its outer end which may be engaged with the tube 23 in the manner shown in Fig. 1, facilitates movement of the cover from the full line position of Fig. 2 to the dot-and-dash line‘position therein and vice versa. Inasmuch as it is desirable to normal ly limit the opening movement of the cover, the tory material 34; - The joint formed at 30 between the ?re brick 15 and the ?re clay will permit a normal amount of expansion to take place in the lining without disrupting the cover. In addition, it will be noted that there is clearance between the sides of the bolt holes. 3|’ and the. bolts to allow for a cer tain amount of shifting of the ?re brick during expansion thereof. With‘ this method of lining, it is apparent that 20 front of the latter is provided with an upstand- ' one size of ?re brick 29 may be readily adapted ing stop 26 which is engageable with the cross bar I I of the bail frame, as shown in the dot-and dash line position in Fig. 2. It may at certain times be desirable to entirely remove the cover. In the present arrangement 30 the parts are so arranged that when. the ladle is tilted rearwardly the stop 26 will fail to engage the cross bar II, thereby permitting complete removal of the cover and complete withdrawal‘ of the rods 22 from the guiding tubes I2. 35 The cover may also be formed with a project ing lug 21 having its outer end apertured as at 28. The lug is so positioned on the cover that when the cover is in the closed position shown in Figs. 1‘ and'2, the aperture 28 will register with 40 the tubular extension I5 of the guiding member I2. When the cover is thus closed, the extension ,25 ofv the handle 24 may be inserted into the aperture 28 and extension I5 to positively lock the, cover in closed position; thus the handle 24 Li serves the dual purpose of facilitating movement ‘ of the cover and locking thereof. The insulation of the ladle covers has occa sioned considerable di?iculty heretofore. Fire brick is a desirable insulating material, but‘ when a ?re brick is made of the exact size of the cover; , it is found that the difference'in coe?icient of expansion between the metal forming the cover proper and the ?re brick forming the lining therefor sets up stresses which result in breakage of the lining. Furthermore, due to the fact that these ladles and covers are furnished in a wide assortment of sizes, it is impractical and costly to have ?re brick of the exact size and shape for each of the various sizes of covers. By referring to Fig. 3, it may be seen that there is ?re brick 29. inserted in the cover and that said brick is substantially less. in diameter than the cover. The ?re brick is also preferably formed with bevelled side edges 30 and with a 65 plurality of recesses 3I in its lower face, com 60 municating with bores 3|’ extending through the ?re brick. In order to line a cover in the man ner disclosed in the present invention, a thin layer of ?re clay is spread on the upper surface of the ?re brick 29 and the brick is- pressed against the inner surface of the cover top H. Bolts 32 are then-passed through the holes 3I’ in the ?re brick and through registering aper tures in the cover portion II, the heads of’the bolts being receivedin the recesses 3|. Nuts 33 for use in various sizes of covers, it being merely 25 necessary to utilize more or less of the refrac tory material‘34 as an edge ?lling. It is apparent that the cover and associated mechanism permits the cover to be readily opened and closed by manipulation of the handle 24, and 30 that the cover can be further locked in position through use of the same handle. Due to the fact that the lower portion 31 of the cover rim overlaps the rim 6 of the ladle, it is apparent that a straight rearward sliding movement of the cover to open the same would‘not function. Due however‘, to the use of the inclined guiding tubes I2 and cooperating inclined ‘rods 22, it is appar ent that the cover is simultaneously raised, so that the ?ange portions 31 clear the rim 6, while 40 the cover is being moved rearwardly. Although only‘one form of ,the invention has been‘ shown and described, it‘. is apparent that various changes and modi?cations may be made without departing from‘the spirit of the inven 45 tion, and all of such changes are contemplated as may come'within the scope of the claims. What we claim is: ' 1. A metallic ladle cover having depending edge ?anges, insulating brick comprising a single slab 50 of less size than the cover positioned adjacent the-inner side thereof, refractory material of dif— ferent composition than said brick ?lling the spaces between said brick and the cover ?anges, and a surrounding ledge extending inwardly from 55 the lower portion of the cover ?anges below the refractory material to maintain the latter in po sition, the brick being of such size‘ that it can be inserted from the bottom of‘ the cover not withstanding said ledge, and means for securing the brick to the cover. 2. A metallic ladle cover having depending edge flanges, insulating brick comprising a single slab of less‘ size than the cover and having tapered side edges with its smallest surface positioned 65 against the inner side of the cover, hardened refractory material of different composition than said brick ?lling-the spaces between the edges of said brick and the cover ?anges, and means for securing the brick to the cover whereby the ta 70 pered edges of the brick lock the refractory ma terial in place. MAX W. GOLDBERG. WALLACE W. DRISSEN.