Benjamin Electric Manufacturing Company
Benjamin Electric Manufacturing Company was an American manufacturer of industrial and commercial lighting, floodlights, signaling equipment, and related electrical products.
Last updated August 31, 2026
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Overview
Benjamin Electric Manufacturing Company was an American electrical manufacturer associated with Des Plaines, Illinois. Its origins lay in the work of Reuben Berkley Benjamin, who developed an electric lamp socket and filed the company’s first patent in 1898. Early production was carried out in Benjamin’s basement, reportedly with assistance from high-school students working after school. The business was formally organized in 1901 with an initial investment of $2,400. Walter D. Steele, Reuben B. Benjamin, and two additional founders were identified with the company’s organization, although the available account does not name the other two individuals. The company initially operated in a small basement facility and later expanded its manufacturing capacity. It moved to Des Plaines in 1929, establishing the Illinois city as an important base for its operations. In 1945, Benjamin built a laboratory devoted to testing and research, reflecting the company’s development from a small electrical-product maker into a larger industrial manufacturer. By 1948, it employed more than 1,200 people. Benjamin’s product range centered on industrial and commercial lighting, floodlights, signaling devices, and other electrical equipment. The company pioneered a wireless cluster for lighting equipment intended to produce higher levels of illumination from carbon-filament lamps. It also became known for non-contact fire-alarm horns introduced during the early 1920s. Reuben Benjamin was credited with securing approximately 300 patents during his lifetime, many of which were used in products manufactured by the company. In 1958, Benjamin Electric Manufacturing Company was acquired by Thomas Industries, Inc. At the time of the acquisition, it employed approximately 600 people at two manufacturing sites: the Des Plaines facility and a plant in Burlingame, California. The business continued to operate under the Benjamin name as a Thomas Industries division. In 1963, the Illinois factory was closed and production was transferred to a Thomas Industries plant in Sparta, Tennessee, described as having 250,000 square feet of space. The available reference material does not establish whether the Benjamin name continued as an active brand after this transfer or when the business ultimately ceased operating independently.
History
Benjamin Electric Manufacturing Company developed from the electrical inventions of Reuben Berkley Benjamin. The company’s first patent, filed in 1898, concerned an electric lamp socket. Early manufacturing reportedly took place in Benjamin’s basement, where high-school students worked after school to produce the part. This small-scale beginning preceded the company’s formal organization in 1901, when it was established with an investment of $2,400. Reuben B. Benjamin and Walter D. Steele were among the named founders; the available reference does not identify the other two founders. The early business expanded beyond lamp sockets into a broader range of electrical products. Its principal activities included the manufacture of industrial and commercial lighting, floodlights, and signaling devices. Benjamin also developed a wireless cluster for lighting equipment, designed to increase illumination from carbon-filament lamps. In the early 1920s, the company introduced a series of non-contact fire-alarm horns, one of its most notable product families. These products formed part of a wider portfolio serving industrial, commercial, and safety-related applications. Benjamin’s growth was accompanied by changes in its physical operations. After operating from a small basement facility, the company moved to Des Plaines, Illinois, in 1929. It later invested in technical capability by constructing a laboratory for testing and research in 1945. By 1948, its workforce had grown to more than 1,200 employees. Reuben Benjamin’s inventive contribution was significant: he was credited with obtaining approximately 300 patents during his lifetime, many of which were applied to products made by the company. In 1958, Thomas Industries, Inc. acquired Benjamin Electric Manufacturing Company. The acquisition did not immediately eliminate the Benjamin identity; the business continued as a division of Thomas Industries under the Benjamin name. At the time, it employed about 600 people at manufacturing facilities in Des Plaines and Burlingame, California. Five years later, in 1963, the Illinois plant was closed and production was moved to a Thomas Industries facility in Sparta, Tennessee. The Tennessee plant had 250,000 square feet of space. The available historical account does not provide enough information to determine the later corporate history of the Benjamin name, its ultimate legal status, or whether it remained a separately marketed brand after the transfer.
- 1963
Production transferred to Sparta, Tennessee
[1]The Des Plaines factory closed and manufacturing moved to a Thomas Industries plant in Sparta, Tennessee.
- 1958
Acquisition by Thomas Industries
[1]Thomas Industries, Inc. acquired Benjamin, which continued as a division under its existing name.
- 1948
Workforce exceeds 1,200
[1]The company employed more than 1,200 people.
- 1945
Research laboratory established
[1]Benjamin built a laboratory for product testing and research.
- 1929
Move to Des Plaines
[1]The company moved its operations to Des Plaines, Illinois.
- 1920
Non-contact fire-alarm horns introduced
[1]The company introduced a series of non-contact fire-alarm horns during the early 1920s.
- 1901
Company formally organized
[1]Benjamin Electric Manufacturing Company was formally organized with a reported investment of $2,400.
- 1898
First electric lamp socket patent
[1]Reuben Berkley Benjamin filed the company’s first patent, covering an electric lamp socket.
Products and positioning
An industrial electrical-equipment manufacturer focused on lighting, illumination accessories, signaling devices, and fire-alarm products.
Electrical components · 1898
Electric lamp sockets
Electric lamp sockets were among Benjamin Electric’s earliest products. The company’s first patent, filed in 1898 by Reuben Berkley Benjamin, covered a lamp socket. Early production reportedly took place in Benjamin’s basement before the business developed into a larger electrical manufacturer.
Lighting equipment
Industrial and commercial lighting
Industrial and commercial lighting formed a central part of Benjamin Electric’s manufacturing activities. The company supplied lighting equipment for non-residential applications and developed related components and systems as it expanded its electrical-product portfolio.
Lighting equipment
Floodlights
Benjamin manufactured floodlights as part of its industrial and commercial lighting range. The available reference identifies floodlights as a significant product category but does not provide model names, technical specifications, or detailed dates of introduction.
Lighting accessories
Wireless lighting clusters
The company pioneered a wireless cluster for lighting equipment. The design was intended to generate higher levels of illumination from carbon-filament lamps, illustrating Benjamin Electric’s emphasis on practical lighting engineering and product innovation.
Fire and signaling equipment · 1920
Non-contact fire-alarm horns
Benjamin introduced a series of non-contact fire-alarm horns during the early 1920s. These devices were among the company’s best-known products and connected its electrical manufacturing capabilities with fire-safety and signaling applications.
Brand decisions
1963
Consolidation of manufacturing in TennesseeStrategyBackground
Following the 1958 acquisition, Benjamin operated manufacturing facilities in Des Plaines, Illinois, and Burlingame, California.
Action taken
The Illinois factory was closed and production was moved to a 250,000-square-foot Thomas Industries plant in Sparta, Tennessee.
Aftermath
The transfer consolidated manufacturing within a Thomas Industries facility. The source does not state how the move affected employment, product lines, or the subsequent status of the Benjamin name.
1958
Acquisition by Thomas IndustriesM&ABackground
Benjamin Electric had developed into a sizeable manufacturer with facilities in Illinois and California. At the time of the acquisition, the company employed approximately 600 people.
Action taken
Thomas Industries, Inc. purchased Benjamin Electric and retained it as a division operating under the Benjamin name.
Aftermath
Benjamin continued within Thomas Industries, although the available source does not describe the terms of the transaction or later brand-management decisions.
Recent events
- 1963
Illinois manufacturing plant closes and production moves to Tennessee[1]
Other
The Benjamin factory in Illinois was closed, with manufacturing transferred to a 250,000-square-foot Thomas Industries plant in Sparta, Tennessee.
- 1958
Thomas Industries acquires Benjamin Electric Manufacturing Company[1]
M&A
Thomas Industries, Inc. bought Benjamin Electric. The business continued under the Benjamin name as a Thomas Industries division and had approximately 600 employees at two facilities.
- 1948
Benjamin Electric employs more than 1,200 people[1]
Other
The company’s reported employment exceeded 1,200 people, indicating substantial expansion during the postwar period.
- 1945
Benjamin Electric builds a research laboratory[1]
Other
Benjamin established a laboratory for testing and research as its manufacturing and engineering activities expanded.
- 1929
Benjamin Electric moves operations to Des Plaines[1]
Other
The company relocated from its earlier small-scale premises to Des Plaines, Illinois.
- 1901
Benjamin Electric Manufacturing Company is formally organized[1]
Other
The company was formally organized with an initial investment of $2,400 and included Reuben B. Benjamin and Walter D. Steele among its founders.
Sources1 sources
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