F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
158/21
F23D 14/40 (2006.01) F23D 14/42 (2006.01) F23D 14/82 (2006.01)
Patent
CA 1278999
ABSTRACT A manual gas cutting torch to be used for fusion- cutting such materials as steel frames or iron plates is descri- bed. The torch has a flame port at its tip (cutting tip), connec- tion ports for gas and oxygen cylinders at the rear and, in the middle, a handle portion for holding the torch. A freely detach- able back-fire prevention device is incorporated within the gas channel or oxygen channel or both channels at a downstream side of the handle portion. The back-fire prevention device serves to stop the flash-back from the cutting tip just prior to the handle section for preventing the flame from passing through the handle section and escaping back to the cylinder.
538660
Fetherstonhaugh & Co.
Kobayashi Souji
Taseto Co. Ltd.
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