History of Portable Lights

In the late 19th century, Conrad Hubert invented the portable electric light, better known as the flashlight. He received a US patent for the device on August 26, 1903 (Patent Number 737107). The first model was not unlike today’s torch with cylindrical shell and an on / off switch. Even the flashlight was an important technological innovation, its creation was heavy on two earlier inventions: the electric light and the battery.

Invention of the Electric Light Bulb

Contrary to what many believe, was no light bulb invented by Thomas Edison. This credit goes to Humphry Davy who created the first electric lamp in 1800. More than half a century later, Charles Francis Brush made carbon arcs used to illuminate public squares and streets. The problem with all these early cases of light was that they could not be maintained for longer periods. But Thomas Alva Edison experimented with thousands of threads, until he found the right material to create a lamp that can last up to 1500 hours.

Invention of the Modern Battery

The second component of the flashlight involved the development of sufficiently small batteries to power the unit so it can be portable. Primitive forms of batteries goes all the way back to Egypt, but they remained problematic because none of them before the 19th century was able to deliver a lasting power. In 1898 introduced the National Carbon Company is a specialized cell battery for use in a flashlight.

The early Portable Light

At the end of the 19th century had many inventors tried to create a portable electric lamp with little success. Early versions became known as “flashlights” as they fluttered and could not provide a steady stream of light. Conrad Hubert model, however, did just that. His company later became known as the “Eveready” and has been the leading manufacturer of flashlights since the early 20th century.

Technological Evolution

The first major innovation flashlight technology that the introduction of the tungsten filament and nickel tubes to complement vulcanised fiber. Vest pocket tungsten flashlights became enormously widespread, with the help of a very effective ad campaign that discussed all the different uses for a flashlight to fill the tank on a gas stove, reading small labels and inspect the inside of a refrigerator.

Eveready Cat

In the 1920s and 30s, began Eveready a Normal Rockwell-style ad campaign to show the use of their flashlights in the home. One of these ads Frances Tipton Hunter depicted a little girl looking over a litter of kittens with the help of a flashlight. The ad was so popular that over 70,000 people ordered copies of the painting of their homes. The nine kittens in the poster was the emergence of Eveready “cat with nine lives” logo.

 

Gallery

BAJ Website

BAJ Website

Source: www.baj.or.jp

20W Portable LED Work Light Cordless Rechargeable IP65 12v …

20W Portable LED Work Light Cordless Rechargeable IP65 12v ...

Source: www.ebay.com

20W Portable Work Spot Light Rechargeable LED Flood …

20W Portable Work Spot Light Rechargeable LED Flood ...

Source: www.ebay.com

Portable Waterproof 30W IP65 3 Modes 24 LED Flood …

Portable Waterproof 30W IP65 3 Modes 24 LED Flood ...

Source: www.ebay.com

China 18W LED Work Light with Remote Area Lighting System …

China 18W LED Work Light with Remote Area Lighting System ...

Source: wzhoney.en.made-in-china.com

Sealey Cordless 108 LED Rechargeable Portable Flood/Spot …

Sealey Cordless 108 LED Rechargeable Portable Flood/Spot ...

Source: www.ebay.com

Rechargeable Portable Flash 24-LED Work Light Flood Lamp …

Rechargeable Portable Flash 24-LED Work Light Flood Lamp ...

Source: www.ebay.com

20W Portable LED Work Light Cordless Rechargeable 12v LED …

20W Portable LED Work Light Cordless Rechargeable 12v LED ...

Source: www.ebay.co.uk

10W Portable LED Work Light, 700lm Lamp, Daylight White

10W Portable LED Work Light, 700lm Lamp, Daylight White

Source: www.lightingever.co.uk

500w Portable Halogen Lamp Work Garden Site Weatherproof …

500w Portable Halogen Lamp Work Garden Site Weatherproof ...

Source: www.ebay.co.uk

Solar Power Led Light Portable Bulb Lamp Lighting System …

Solar Power Led Light Portable Bulb Lamp Lighting System ...

Source: www.ebay.com

Rechargeable power Led Cob work Light stand waterproof 50 …

Rechargeable power Led Cob work Light stand waterproof 50 ...

Source: www.ebay.com

Klutch LED Portable Worklight- 12 Watts 900 Lumens

Klutch LED Portable Worklight- 12 Watts 900 Lumens

Source: www.ebay.com

Rechargeable 50W 36LED Portable LED Flood Spot Work Light …

Rechargeable 50W 36LED Portable LED Flood Spot Work Light ...

Source: www.ebay.ie

Camping Outdoor Solar/USB Recharge Light LED Portable Tent …

Camping Outdoor Solar/USB Recharge Light LED Portable Tent ...

Source: www.ebay.com

10W LED Flood Light Portable Outdoor Rechargeable Magnet …

10W LED Flood Light Portable Outdoor Rechargeable Magnet ...

Source: www.ebay.com

Dual Head Pivoting Work Light With Stand Portable Auto …

Dual Head Pivoting Work Light With Stand Portable Auto ...

Source: www.ebay.com

Designers Edge L1318 3200-Lumen 120-Volt Portable LED …

Designers Edge L1318 3200-Lumen 120-Volt Portable LED ...

Source: camelcamelcamel.com

Mini White LED Clip Booklight Flexible Portable Travel …

Mini White LED Clip Booklight Flexible Portable Travel ...

Source: www.ebay.com

L’Encyclopédie de Diderot et D’Alembert : Résumé

L’Encyclopédie de Diderot et D’Alembert : Résumé

Source: salon-litteraire.linternaute.com