Electric lamp with insulating base providing improved wire retention

In an electric lamp including a sealed, light-transmitting envelope having a bulbous portion and a press sealed end portion, at least one filament located within the interior of said bulbous portion of said envelope, a pair of lead-in conductors each connected at one end thereof to said filament, each of said conductors sealed within said press sealed end portion of said envelope and projecting exteriorly thereof, and an electrically insulating base member including a first portion having an opening therein and a protruding second portion adjacent said first portion, said press sealed end portion of said envelope being securedly positioned within said opening, said first portion of said base member thereby providing a cover for said press sealed end portion and including a pair of channels located within a sidewall thereof and each including a first tapered portion therein, each of said exteriorly projecting portions of said conductors passing through said protruding second portion and protruding externally thereof, said externally protruding portions of said conductors being maintained in predetermined alignment within a respective one of said channels within said first portion of said base member and against a respective external surface of said protruding second portion of said base member such that electrical contact can be provided at said external protruding portions of said conductors in the region of said protruding second portion, the improvement wherein each of said conductors is embedded a predetermined distance within said respective channel and said channel is thereafter deformed to define a second tapered portion and a quantity of deformed material such that each of said conductors is substantially covered by said quantity of deformed material to positively secure each of said conductors within said respective channel within said first portion.