Home Index Site Map Up: Insulators Navigation
Up: Insulators
Baltimore Glass Manufacturing (B.G.M. Co.) Gallery
Home  > Insulators  > B.G.M.
First: Insulator RGB Color-Spaces Last: Old Photographs Prev: Hemingray Experimental Insulators E1, E2, E3 and E14B Next: Millville Insulator Gallery Navigation
Gallery: 14 of 21

Baltimore Glass Manufacturing Company, 1896 to 1903 (est.), shut down by court order for patent infringement-- caught using a copy of the Kribs press for making their insulators, a device patented by Brookfield, who won their molds and press(es?) in the lawsuit. Brookfield then reworked the molds to remove the old embossing, filling in the "B.G.M. CO." with blot-outs and re-engraving with "NEW YORK". "BROOKFIELD" was added to the previously blank other side.

Most B.G.M. insulators are purple, with a few in off-clear and lemon; the Brookfield units are almost always light aqua, anything else is rare. B.G.M. glass is notoriously fragile and the insulators are usually chipped; the darker the shade, the more likely the damage it seems. The better condition pieces are often lighter colored, perhaps because they led more sheltered lives?

B.G.M. molds are unique; the insulators made with them have a distinctive profile unlike any other. Study the pictures below paying particular attention to the profiles and the blot-outs will start to stand out on a crowded table of aquas at shows.

CD
102
CD 102 B.G.M. in Ice Purple
Ice Purple
CD 102 B.G.M. in Purple
Purple
CD 102 B.G.M. in Dark Purple
Dark Purple
CD 102 B.G.M. blot-out in Light Aqua
Lt Aqua Blot
    CD
    133
CD 133 B.G.M.C. in Light Purple
B.G.M.C.
CD 133 B.G.M. in Light Purple
Light Purple
CD 133 B.G.M. blot-out in Light Aqua
Light Aqua Blot
CD
134
CD 134 B.G.M. w/Bruise in Off Clear
Off Clear
CD 134 B.G.M. in Purple
Purple
CD 134 B.G.M. blot-out in Light Aqua
Light Aqua Blot
    CD
    145
CD 145 B.G.M. in Light Lemon
Light Lemon
CD 145 B.G.M. in Medium Purple
Medium Purple
CD 145 B.G.M. in Dark Purple
Dark Purple
CD 145 B.G.M. blot-out in Light Aqua
Light Aqua Blot
CD
162
CD 162 B.G.M. in Ice Purple
Ice Purple
CD 162 B.G.M. in Dark Purple
Dark Purple
CD 162 B.G.M. blot-out in Green
Green Blot
    CD
    164
CD 164 B.G.M. in Purple
Purple
CD 164 B.G.M. in Purple
Purple
CD 164 B.G.M. blot-out in Light Aqua
Light Aqua Blot