Angela's lamp
Angela it doesn't sound like a tourchere. Those aim the light up to the ceiling. Is the center glass like a glass chimney on an old oil lamp? OR--Go to lampsplus.com and look up Montebello Floor Lamp . Is that what your lamp is like? It has three smaller bulbs around a center bulb. And a shade. Home Depot and places like that usually carry replacement glass in the most common shapes and sizes. If it's more of an antique then a restoration supply place on the internet might have it. Sunny