F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
F23D 14/38 (2006.01) B23P 19/06 (2006.01) F23D 14/52 (2006.01)
Patent
CA 2305601
A gas bolt heater for loosening large bolts and studs has a hollow cylindrical housing defining a cylindrical heating chamber within the housing. A heating tube projecting from one end of the housing has a longitudinal bore. A first cylindrical insert closing the lower end of the chamber has a through opening communicating with the bore of the heating tube, and a second cylindrical insert located within an opposite end of the cylindrical housing has an elongate passage extending axially of the cylindrical housing. Downwardly convergent air passages in the second cylindrical insert have mouths distributed around the elongate passage, at a lower end of the passage, and an air supply duct communicates through the cylindrical housing with the air outlet passages. In use, air jets discharge from the mouths of the air outlet passages around an outlet end of a tip of an oxy-acetylene torch inserted through the elongate passage so that the flame of the oxy-acetylene torch is directed longitudinally of the cylindrical heating chamber and does not impinge directly on the wall of housing. The useful life of the gas bolt heater is thereby substantially extended.
Long And Cameron
Tatarczuk George
LandOfFree
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