Chicago Link Company/Chicago Belt Link Company. The Steel Industry Heritage Corporation in Homestead, PA is looking for information about the Chicago Link Company. or the Chicago Belt Link Company. We have a patron that has a gear (55" tall) that was made by the company. The item has a part/production number of P29250. If anyone has information on the aforementioned company or the gear itself, please contact me. Thanks. Ron Baraff, Archivist Steel Industry Heritage Corp. 338 E 9th Ave Homestead, PA 15120 412-464-4418