US694937A

US694937A - Ladle.

Info

Publication number: US694937A
Application number: US30009A
Authority: US
Inventors: Frederick Baldt
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-07-17
Filing date: 1900-09-14
Publication date: 1902-03-11
Anticipated expiration: 1919-03-11

Description

Nu. 694,937. Patantejd Mar. ll, I902.

, F. BALDT.

LADLE.

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UNITED STATES PATENT OFFICE.

FREDERICK BALDT, OF CHESTER, PENNSYLVANIA.

LADLE.

SPECIFIGATION forming part of Letters Patent No. 694,937, dated March 1 1, 1902.

Original application filed July 19, 1900, Serial No. 23,961. Divided and this application filed September 14, 1900. fierial To all whom it may concern:

Be it known that I, FREDERICK BALDT, a citizen of the United States, residing at Chester, in the county of Delaware, State of Pennsylvania, have invented a new and useful Improvement in Ladles, which improvement is fully set forth in the following specification and accompanying drawing.

My invention consists of an improvement in ladles wherein the body portion is formed or constructed of rolled metal and having a bottom formed 01": cast metal, which is suitably secured to the said body portion, this application being a division of an application for improvement in ladles filed July 19, 1900, Serial No. 23,961.

The figure represents an elevation of a ladle embodying my invention with a portion broken away.

Similar letters of reference indicate corresponding parts in the figure.

. Ladles for pouring molten metal have heretofore, as far as I am informed, been, constructed of rolled metal throughoutthat is to say, both the body portion and bottom have been constructed of rolled metal-lined, of course, with the usual fire brick or clay. Serious difliculties, however, have been encountered in the use of these ladles, resulting not only in loss of time, but in the loss in some cases of an entire pouring of metal, and,furthermore, have entailed great expense. This is due to the warping, bulging, or cracking of the rolled-metal bottom, occasioned by-the intense heat andalso the weight of the molten metal. When the bottom thus warps, bulges, or cracks, it displaces the refractory lining of the ladle, and thus allows the molten metal to come in contact with the bottom, and in some cases the bottom is burned out, which will cause the loss of the contents of the ladle. This necessitates the replacing of the bottom, entailing an expense in causing a loss of time and labor. To overcome these difficulties, I have devised a ladle the bottom of which will not warp, crack, or bulge and have in practice used such" a ladle for some time with entirely satisfactory results. In the drawing I have shown a ladle A constructed in accordance with my invention, the body portion B of which is formed of rolled (No model.)

metal, while the removable bottom 0 is constructed of cast metal suitably secured to the body portion-for instance, by bolts D. I

have found in practice that the properties of this cast metal bottom are such that it successfully obviates the objections to the rolled" "I therefore gain an advantage in constructing the bottom of cast metal, since the life of the ladle is prolonged, the operation improved, while a new bottom can be quickly inserted if for any cause this should be necessary. As thebottom is where the greatest heat occurs and is in part subjected to the greatest strain, it is necessary to make the same exceedingly strong and durable, combined with the approved weight and property of resisting any tendency to warp or bulge, and these combined'properties can be secured by the present construction, thereby effiectually preventing the bottom from sagging or otherwise bulging or cracking, and thus mak ing the same unfit for use. 7

Having thus described my inventiom'what I claim as new, and desire to secure by Letters Patent, is e e 1. In a ladle, a body portion formed of rolled metal, a bottom formed of cast metal, and means for securing the said body portion and bottom together.

2. In a ladle, a bod y portion formed of rolled metal, in combination with a bottom formed of cast metal suitably secured to said body portion.

3. A ladle consisting of a body portion formed of rolled metal, and a bottom of cast metal suitably secured to said body portion and possessing the property of greater resistance to warping, bulging, cracking or sagging when subjected to the heat and weight of the metal within the ladle than is possessed by the rolled metal of the body portion.

FREDK. BALDT.