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Publication of FR679191ApublicationCriticalpatent/FR679191A/fr
B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
B21J5/08—Upsetting
B—PERFORMING OPERATIONS; TRANSPORTING
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
B21K7/00—Making railway appurtenances; Making vehicle parts
B21K7/02—Making railway appurtenances; Making vehicle parts parts for permanent way
B21K7/06—Making railway appurtenances; Making vehicle parts parts for permanent way sleepers
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FR679191D1929-04-171929-07-23Procédé pour la fabrication de traverses en fer pour voies ferrées, avec nervures de guidage des rails
ExpiredFR679191A
(fr)