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History of the manufacturer  

Apco Manufacturing Company; Providence, RI

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Name: Apco Manufacturing Company; Providence, RI    (USA)  
Abbreviation: apco
Products: Model types Tube manufacturer

Apco Manufacturing Company
1200 Eddy St., Providence, Rhode Island (1926)

Canadian factory: 3150 Jeanne Mance St., Montreal, Quebec
Export and NY sales office: 143 Nassau St.

1438 South Michigan Ave., Chicago, IL
2005 E 15th St., Kansas City, MO
2006 ½ Commerce St., Dallas, TX

The company made battery chargers, eliminators, rectifier units and other radio parts.

The APCO company made only one tube - the "Twin" which is a double 201A type. A switch arm in the base pin area could activate the second set of elements.

Founded: 1917
The Auto Parts Company (APCO) was founded in 1909 by Thomas F Wilson. The APCO Manufacturing Company was founded on June 1st, 1917 when it took over the Auto Parts Company. They were located in Chapman Street, Providence Rhode Island and specialised in a large line of tools for the Model T Ford and the like. The capital for the new company was US $ 200,000. Both 1921 and 1924 Providence House Directories list APCO as being at 1200 Eddy Street. In May of 1924 a trade mark was registered for a battery charger and in December for a current rectifier. The 1925 Radio Fan's Handbook listed APCO battery chargers and the APCO Rectodyne B battery eliminator.
Also in 1925 the company introduced the APCO Twin tube. This was a double filament 201A style tube with a switching mechanism for the filament pins in the base. Originally it had a Bakelite UV base and was tipped. Three variations of the tube have been located - technical changes allowing for new bulb and base design (UV to UX and tipless). Page 347 of Tyne's "Saga of the Vacuum Tube" shows a tipless UV based tube which appears to be outside frosted. In addition to battery chargers and eliminators, the company made vernier dials. A battery charger was also made in 1928. APCO merged with the Frank Mossberg Company in 1927, to become Apco-Mossberg. This company is still active in 2017 but it appears that radio parts were discontinued in the late 1920's.

This manufacturer was suggested by Fin Stewart.

Some models:
Country Year Name 1st Tube Notes
USA  24 Battery Charger Automatic "A"   Automatic trickle charger,6 Volt,  0.75 Amperes, for "A" battery. Charges automati... 


Further details for this manufacturer by the members (rmfiorg):

Radio Trade Directory August 1925, p.105tbn_apco_parts_ad.jpg
APCO Converter brochure 1925tbn_apco_converter_brochure_1925.png
Citizens Radio Call Book Spring 1925tbn_citizens_radio_call_book_spring_1925.png
Evening News January 29 1926tbn_evening_news_january_29_1926.png
Radio Call Book Spring 1925tbn_radio_call_book_spring_1925.png
Sunday Courier March 7 1926tbn_sunday_courier_harrisburg_march_7_1926.png
APCO radio receiving set ad, "The Talking Machine" November 26, 1926tbn_thetalkingmachineworldoctober15_1926.jpg