Anti-Magnetic Shield

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 31: The Giles and Gribi Debate: Anti-Magnetic Shield versus Non-Magnetic Alloys

By Nathan Moore

In Science

Pictured: Illustration Demonstrating the Magnetic Field of a Magnetized Watch, “Magnetism in Watches” by Charles K. Giles, Western Electrician, June 30, 1888 As non-magnetic watches and anti-magnetic shields gained popularity with a growing concern over electromagnetism, each became subject to attacks from interests supporting the...

Science

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 30: Edwin J. Houston’s Experiments: The Anti-Magnetic Shield

By Nathan Moore

Pictured: An Anti-Magnetic Shield on an Elgin 18-Size Watch, c.1890s. In the March 1888 edition of the Journal of the Franklin Institute, Professor Edwin J. Houston published a comprehensive article.

Patents & Innovations

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 16: Alternative Anti-Magnetism Devices: Anti-Magnetic Ajax Insulator Surviving Example

By Nathan Moore

Pictured: Ajax Insulator with Original Box [Images Courtesy of eBay Seller baubles-and-buttons] The anti-magnetic Ajax Insulators sold by the Newark Watch Case Company typically featured a glossy black exterior and.

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 15: Alternative Anti-Magnetism Devices: Anti-Magnetic Ajax Insulator

By Nathan Moore

In Patents & Innovations

Pictured: “Ajax Insulators” Advertisement, The Jewelers’ Circular, August 3, 1898. As electricity was being adopted across the globe in the 1880s, the watch industry was met with the challenge of magnetism from electromagnetic fields. When the delicate hairspring, balance, and steel parts of the watch...

Patents & Innovations

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 14: Alternative Anti-Magnetism Devices: Giles Anti-Magnetic Shield

By Nathan Moore

Pictured: “The Giles Patent Anti-Magnetic Shield” Advertisement, The Jewelers’ Circular and Horological Review, 1884 (Unknown Issue) As electricity was being adopted across the globe in the 1880s, the watch industry.