ประวัติ นาฬิกาปลุก Westclox Big Ben และ Baby BenThe Big Ben alarm clock was first sold in 1909 and has evolved through many case style and movement changes. The Baby Ben was first sold in 1910 and has evolved in a similar way.
The pictures below illustrate the 10 "mainstream" case styles of windup Big and Baby Bens and the years in which they were made. Style 1 was the first model made and style 10 is the last model. To identify a Ben, find out which of the case styles it matches. Pay particular attention to the shapes of the cases since various case colors were available in styles 2 through 10, and the dial on your clock might be different. For more exact dating, look on the movement - a date will be found on almost any Big Ben or Baby Ben made up until mid-1970's. The Big and Baby Bens up through style 9 were made in USA (and some some other countries). The style 10 is made in China.
Additional case styles that have names but not numbers are illustrated below the numbered styles. Also shown below are some relatives of the Bens: Bingo Style 1, Dura Case (LaSalle series), Clock of Tomorrow, and the Seth Thomas 'Baby Bens".
In 2001, General Time (owner of Westclox) declared bankruptcy and sold the Westclox name to Salton, Inc. Since then, the name "Big Ben" has been used on several redroduction models of clocks that were not called Big Ben in the past. These reproductions may be identified by being battery operated and made in China.
Reproductions of some of the earlier Big Ben styles are now being made in China. They are included in the detail pages for the various styles.
Source:
http://clockhistory.com/westclox/products/ben/index.html
