Electric lamp base end structure

Claim 1

An electric lamp comprising a sealed tubular vitreous envelope provided at its opposite ends with stem presses disposed in a common plane, each of said stem presses having a groove in one of its surfaces, said groove extending from the outer edge of said stem press inwardly toward said envelope, said groove terminating in an end wall, lead wires hermetically sealed in respective stem presses and extending into said envelope, a filament connected at its opposite ends to said lead wires, each of said lead wires extending outwardly from the respective stem presses and being bent at tHe outer edge of said stem press so as to be positioned in said groove and extending beyond the end wall of said groove and overlying the surface of the stem press behind said end wall, each of said stem presses containing at least one shoulder located forward of its end wall and hollow metal base members fitted over said stem presses and provided with springlike tongues extending inwardly of the surface of said bases toward said stem presses, said tongues having a V-notch, said shoulders located in respect to said end wall such that said spring-like tongues pass over said end wall and said V-notch of said tongues resiliently clamp said lead wire against said stem press surface behind said end wall to form an electrical connection with said lead conductor.