Domestic Manufacturers of Semi-Automatic Keys "bugs" compiled by B. Neal McEwen, K5RW corrections or additions welcomed Manufacturer Location Dates A-to-Z Electric Novelty Co. Chicago, Ill. pre-WWI A.E.Co Chicago, Ill. pre-WWI Abernathy Hampton, Va 1916-19?? Bell Novelty Co. Cedar Rapids, Iowa. 1949-1950s Boulter,R.L. Los Angeles, Cal 1913-1920 Breedlove (Codetrol) Ga. 1950-1951 Brooklyn Metal Stamping Co. Brooklyn, N.Y. 1930-1942 Brown Bros. St.Louis, Mo. 1967-1975 Bunnell,J.H. (Gold Bug, et.al.) New York, N.Y. 1926-1960 Clark,James (Rotoplex) Louisville,KY 1942-1945 Cote,O.E. 1930s D&K Mfg. (Dinger) Cleveland, Ohio 1909-1920 Delaney Telegraphic Transmitter Co. New York, N.Y. 1907-1924 Dow-Key Minnesota 19??-1960 Dunn,Thomas J. (Dunnduplex) New York, N.Y. 1909-1913 Electric Specialty Co. Cedar Rapids, Iowa 1939-1955 Electro Mfg. (Electro Bug) San Francisco, Fresno 1924-1934 Emory,A.H. (Go-Devil) Poughkeepsie, N.Y. 1934-1950 Hulit Topeka, Ks 1909-1911 Hunter (Apex) Tampa, Fl 1935-1965 Johnson,E.F. (SPEED-X) Minnesota 1955-1970 Kenmore (Kenco) Boston, Ma. 1934-1941 King & Co. ("Orig. Am. Vibroplex") Cincinnati pre-WWI Leach (Speedoplex) Los Angeles 1920-1930s Levinson Radio (Like-a-Flash) St. Louis 1930s? Lionel N.Y. 1942-1945 Lippencott ?? pre-WWI Logan,Les (SPEED-X) San Francisco,Ca 1928-1955 MacDonald,Wm. Chicago,Ill. pre-WWI Martin Research & Mfg. N.Y. 1933-1939 Martin,Horace G. (Vibroplex) Brooklyn,N.Y. 1903-1914 McClintock (Keen-Kode) Minneapolis, Minn. 1931-???? McElroy, T.R. Boston, Mass. 1934-1955 Mecograph Cleveland, Ohio 1906-1913 Melehan (Valiant) Anaheim, Cal. 1939-1947 Mt. Auburn Specialty Co. Cincinnati, Ohio pre-WWI National Transmitter Co. New Jersey 1920-19?? Pat Products Roseland,N.J. ?? Philadelphia Thermo. Inst.(Triplex) Philadelphia 1924-1926 Postal Telegraph ?? 1925?? Sarno, J.J ?? ??? Signal Electric (Sematic) Michigan 1928-1934 Specialty Shoe Mach. (Shawplex) St. Joeseph, Mo 1919-???? Standard Radio New York 1930s ? Starkins,W.R. (Equable) Rochester, N.Y. 1940s Telegraph Apparatus Co. Chicago, Ill. 1943-1950 Thomas,O.M., Electric ?? pre-WWI Ultimate Transmitter Co. ('73') Los Angeles 1925-1932 United Electric Mfg. (Vibroplex) Norcross, Ga. 1903-1910 Vailograph International Co. Minneapolis, Minn. 1908-1912 Vibroplex New York, Maine 1914-pres. Western Electric New York, N.Y. 1916-???? Westinghouse Air Brake Wilmerding, Pa. ???? Wheaton Res. & Dev. (Go-Devil) Wheaton, MD. 1930s-1950s nmcewen@metronet.com -- 73 de K5RW - Neal McEwen - Richardson, TX (Dallas) ******** I collect old telgraph and wireless telegraph keys ********* HomeNet - nmcewen@metronet.com - OS/2 tcp/ip SLIP HomePage - http://fohnix.metronet.com/~nmcewen/techno_weenies.html