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History of the manufacturer  

Benjamin Electric; Chicago

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Name: Benjamin Electric; Chicago    (USA)  
Abbreviation: benjamin
Products: Model types Others
Summary:

Benjamin Electric Manufacturing Company; 120 - 128 S. Sangamon St.; Chicago, also 847 W.Jackson Blvd., Chicago; also in New York, San Francisco and Toronto (Canada).

Products in the Radio field: "Cle-Ra-Tone" Vacuum tube sockets; Variable Condensers; Push-Pull switches.
Ref.: The Radio Trade Directory, Aug.,1925.

History:
Benjamin Electric Manufacturing Company was a Chicago, IL electrical company founded in the late 1800s. The company was founded by Reuben B. Benjamin, and filed its first patent for an electric lamp socket in 1898. The company went on to manufacture various other electrical products. One of Benjamin's most notable products was their series of non-contact fire alarm horns, introduced in the early 1920s. They were available in flush-mount, single, and double projector versions, in either red or gray. These horns were mainly used by IBM, and later SimplexGrinnell up until the 1960s. In 1958, Benjamin was bought out by Thomas Industries, Inc. The company's factory in Illinois was closed in 1963, and was replaced with a new 250,000 square-foot light fixture plant in Sparta, TN.
Ref.:
- Radio News, Oct.1925, p.502,
- Popular Mechanics, May 1916, p.126,
- Wikipedia

This manufacturer was suggested by Karlheinz Gützlaff.


Some models:
Country Year Name 1st Tube Notes
USA  25 Radio Frequency Transformer   Advertising: Low Resistance - Low Distributed Capacity. Wires are space wound, adjacent... 
USA  25 Cle-Ra-Tone Socket   Advertising: Benjamin Cle-Ra-Tone Sockets prevent the transmission of outside vibrations... 
USA  25 Long-Range Condenser   Advertising: Straight line type. Definite and positive control of minute changes in cond... 
USA  25 Adjustable Radio Shelf Brackets 9029   Made in USA. 
USA  25 Shelf Supporting Brackets 8629   Made in USA. 
USA  25 3 Gang Cle-Ra-Tone Socket 9003   For UV 199 tubes Made in USA. 

[rmxhdet-en]

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

Source: Radio News for October 1925, page 502tbn_usa_benjamin_address.jpg
Radio News for March, 1928; page 1084tbn_usa_benjamin_advert_rn_1928_1084.jpg
Parts brochure as listed in eBay item number:382521465882tbn_usa_benjamin_parts1.jpg
Parts brochure as listed in eBay item number:382521465882tbn_usa_benjamin_parts2.jpg

  

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