Cutting and welding torch valve apparatus

Details Cutting and welding torch valve apparatus Cutting and welding torch valve apparatus

1980-07-14

1982-10-12

Walton, George L.

Fluid handling

Systems

With flow control means for branched passages

137606, 137881, 222482, 2394162, 2394175, 251 86, 431345, F17D 301

Patent

active

043533957

ABSTRACT:
A torch having oxygen and fuel gas passages from the torch butt to the torch tip, and valving apparatus for controlling the flow of oxygen and fuel gas from fuel and oxygen adapters on the torch butt to said passages, the valving apparatus including a valve seat, a valve stem, a first ball retained in a valve stem bore for rotation relative to the valve stem and abuttable against the valve seat to block fluid flow therethrough while the valve stem is spaced from the valve seat and a second ball rotatably mounted in a valve stem bore to abut against the first ball axially opposite the valve seat, and lubricant for being transferred from the second ball to the first ball as the valve stem rotates relative the first ball and the first ball rotates relative to the second ball, the first ball being of a substantially larger diameter than the second ball.

REFERENCES:
patent: 1763927 (1930-06-01), Ireland
patent: 1830459 (1931-11-01), Austin et al.
patent: 1865998 (1932-07-01), Abbott, Jr.
patent: 2031163 (1936-02-01), Hughey
patent: 2198342 (1940-04-01), Jacobsson et al.
patent: 2480283 (1949-08-01), Blahut
patent: 3076494 (1963-02-01), Wedan

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