Claims
- 1. A lifting bail in combination with a furnace shell for use with molten metal,
- comprising a generally dish-shaped bottom furnace wall section having a metal casing and a refractory lining,
- a first generally ring-shaped furnace wall section removably mounted on top of said bottom section and having a metal casing and a refractory lining,
- a second generally ring-shaped furnace wall section removably mounted on top of said first wall section and having a metal casing and a refractory lining,
- said first wall section having a molten metal outlet opening and a pouring spout projecting outwardly beneath said opening,
- said second wall section having a slag discharge opening and a movable door for closing said opening,
- and a generally horizontal lifting bail frame for separately lifting said first and second wall sections,
- said lifting bail frame being non-symmetrical and having a lifting device projecting upwardly therefrom and first and second pairs of suspension devices extending downwardly therefrom,
- said suspension devices of said first pair being spaced apart a substantially greater distance than said suspension devices of said second pair,
- said lifting device being spaced a smaller distance from said suspension devices of said first pair than from said suspension devices of said second pair,
- each of said first and second wall sections having first and second pairs of connecting elements for connection to said respective first and second pairs of suspension devices,
- said connecting elements of said first pair being spaced apart a relatively great distance corresponding to the distance between said suspension devices of said first pair,
- said connecting elements of said second pair being spaced apart a relatively smaller distance corresponding to the distance between said suspension devices of said second pair,
- said connecting elements on said first wall section being disposed with said first pair of connecting elements relatively close to said pouring spout and with said second pair of connecting elements relatively more remote from said pouring spout whereby said first wall section will hang level from said bail,
- said connecting elements on said second wall section being disposed with said first pair of connecting elements relatively close to said slag door and with said second pair of connecting elements relatively more remote therefrom whereby said second wall section will hang level from said bail.
Parent Case Info
This application is a division of the applicant's copending application, Ser. No. 519,236, filed on Oct. 30, 1974, now U.S. Pat. No. 3,952,140, issued Apr. 20, 1976, which was a continuation of the applicant's application, Ser. No. 277,142, filed Aug. 2, 1972, now U.S. Pat. No. 3,871,632, issued Mar. 18, 1975.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3749388 |
Cook et al. |
Jul 1973 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
1,938,982 |
Feb 1971 |
DT |
4,723,043 |
Jun 1972 |
JA |
144,269 |
Jan 1961 |
SU |
Divisions (1)
|
Number |
Date |
Country |
Parent |
519236 |
Oct 1974 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
277142 |
Aug 1972 |
|