"the adjustable spanner
aka "the french key"
&
triplex telescopic lamp."

Johan Petter Johansson
December 12, 1853–August 25, 1943

Swedish Inventor and Industrialist

Johan Petter Johansson eventually decided to start his own business and, in 1886, moved to Enköping where he started "Enköpings Mekaniska Verkstad" (the Mechanical Workshop of Enköping) which quickly became a successful venture.



It was during the years in his workshop that he invented the adjustable spanner and the pipe wrench. In 1890, B.A. Hjort & Company agreed to distribute his tools worldwide under the "Bahco" trademark. The Bahco tools became greatly successful, and the company is still in operation and has manufactured over 100 million wrenches to date.

Triplex Telescopic Lamp
1930's.....

Painted metal extending and adjustable wall or ceiling lamp.
This example very unusual, with detachable shade. In 1916 he founded the Triplex Factory.
In the mid twenties, Alvar Aalto used this lamp in his interiors.
Also, widely used in interiors at the Stockholm Exhibition 1930...

detail....

Johan Petter Johansson

"the adjustable spanner
aka "the french key"
&
triplex telescopic lamp."




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thomas edison

"To the Honorable Commissioner of Patents:
Your Petitioner Thomas A. Edison of Menlo Park in the State of New Jersey prays that Letters Patent may be granted to him for the invention of an Improvement in Electric Lamps and in the method of manufacturing the same set forth in the annexed specification. (Case no. 186)"


"On January 27, 1880, Thomas Edison received the historic patent embodying the principles of his incandescent lamp that paved the way for the universal domestic use of the electric light.

Thomas Edison propelled the United States out of the gaslight era and into the electric age. From the time he was a boy, he was mesmerized by the mechanics of the universe and, with virtually no formal education, brought forth innovations that continue to dominate our lives."


read more here.....
Thomas A. Edison exhibits a replica of his first successful incandescent lamp, which gave 16 candlepower of illumination, in contrast to the ultimate in today's achievement, a 50,000 watt, 150,000 candlepower lamp.