Combined manual and safety valve

Claim 1

A manifold gas valve comprising a valve body having an inlet and an outlet for connection to a main burner and a first passageway therebetween, a rotary valve located in said first passageway, a second passageway in said body extending from said rotary valve to a pilot burner outlet, said rotary valve having a third passageway therethrough with a first end always registering with the inlet end of said first passageway and a second end selectively registerable with the outlet end of said first passageway and said second passageway in an ''''on'''' position or with said second passageway only in a ''''pilot'''' position or with neither of said first and second an in an ''''off'''' position, a safety valve positioned and biased to close said first end, means for holding said safety valve in a position away from said first end but incapable of moving said safety valve away from said first end, a plunger axially slidable through said rotary valve and arranged to move said safety valve away from said first end, a manually operable knob having a an axially slidable and nonrotatable connection with said rotary valve and arranged to actuate said plunger, said knob having radially extending and axially spaced arms thereon, cover means positioned over said rotary valve and around said knob and having an arcuate flange that is located between said rams, said flange having a notch therein wide enough to permit the outermost arm to move therein when the knob is in the ''''pilot'''' position and said knob and plunger are moved to open said safety valve, said notch being too narrow to ever allow the innermost arm to move therein, and stop means between said innermost arm and said flange and so arranged that the control knob may be rotated from the outlet ''''off'''' to the ''''pilot'''' position but requires axial movement prior to rotary movement of the knob to move in the opposite direction to the ''''off'''' position.