Abstract: Conversion of a conventional volume-price computer for a liquid fuel metering pump to extend the existing range from three place to four place unit price per volume and comprising an auxiliary differential gear train assembly driven from the main output gear of the volume register shaft through a settable variable gear train and a fixed step-up gear train assembly wherein an additional higher unit price per volume of 0, $1, or $2 may be added to the conventional mechanism.

Abstract: A screw feed mechanical pencil having a propelling nut which self-taps on an unthreaded interior barrel wall. The pencil's barrel and split tube are plastic extrusions and a square lead is used to prevent lead rotation during writing.

Abstract: A cigarette lighter is disclosed having a body defining a fuel reservoir and a threaded passageway extending from the reservoir to the body exterior. An insert is threaded at least partially into the passageway and a set of bendable tabs secured thereabout along a common plane exteriorly of the body. Stop means are provided for limiting rotary movement of the insert through engagement with a member of the set of bendable tabs bent off the common plane. A valve stem is movably disposed within a cavity in the insert with a portion of the valve stem projecting to the exterior thereof. An actuating lever is coupled with the valve stem and interlocked with a fulcrum.

Abstract: A cigarette lighter is disclosed having a body defining a fuel reservoir and a passageway extending from the reservoir to the body exterior. An elongated sleeve is disposed within the passageway having interior walls defining a bore and a longitudinal groove in the walls opening to the bore. A solid valve stem is movably disposed within the sleeve bore. Actuation means are provided for moving the valve stem within the bore to effect valve operations.