Collectors, you might want to take a second look at your Adlake stamped switch keys,
they may be older than you think. The last paragraph explains it all!
John McGregor Adams was a highly acclaimed businessman in Chicago. Born in New Hampshire in 1834, he arrived in the city in 1858 as a representative for a hardware company based in New York. Soon after arriving, he began a railway supply firm with John Crerar.
William Westlake, born in England in 1831, was more of an inventor than a businessman. He was a tin and copper smith for a number of railroad companies in his younger years and invented the car heater, loose globe lantern, oil cook stove and stove board in the 1860s. He perfected the first practical railroad car lamp in 1873. Westlake began a lucrative railroad globe lantern business soon after.
He joined forces with Adams and his company was re-organized as the Adams and Westlake Company in 1874. The company continued making globe lanterns, but it sold other railroad supplies as well. The Encyclopedia of Chicago has an entire catalog from 1875 available online. They also sold bicycles and early magazine cameras under the brand Adlake.
Westlake quickly grew tired of the business and left the company and his patents after only 3 years, moving to Brooklyn, New York in 1877. A few years later, he retired, although he never stopped inventing. He died in 1900. Adams, a keen investor and philanthropist, remained president of the company until he died in 1904.