Climax Development Time Line
Geared Steam Locomotive Works ©
Some of the notable developments in the line of Climax locomotives is detailed in the table below. These are listed in ascending chronological order. In most cases, only the year of the development is known. Other notable developments are not listed only because an approximate date of occurrence is not known. See Note.
|Class||Development / Change / Event|
|3/ 4/1888||A||First Climax completed. - Purchased by Imel, Powers & Shank - Cornplanter, Pennsylvania 330d|
|01/?/1891||B||First Class "B"
locomotive with horizontal cylinders built.
Purchased by Smith, Glover, & Duncan - Miffienburg, Pennsylvania.
|1893||B||First Class "B" locomotive with inclined cylinders built.|
|1893-95||A||Tee boiler with round firebox replaced the vertical boiler|
|1897||C||First Class "C" locomotive built - Colorado & Northwestern Railroad - Boulder, Colorado|
|1901||B||50 ton Class "B" available for order.|
|1904||A||Tee boiler (improved design) with square firebox replaced previous Tee|
|1910||B||Steel cabs began replacing wooden cabs|
|1910||B||Flaring flange on top of water tank was discontinued.|
|1911||A||Steel Frame available as an option|
|1913||B||Single casement cab window replaced the double style.|
|1915||B||Walschaert valve gear replaced Stephenson link valve gear on all models 45 tons and larger|
|1916||A||Square Water Tank replaced round one|
|1923||C||Piston valve cylinders replaced slide valve cylinders|
|1923||C||Superheaters first offered|
|1923||B||Last 60 ton Class "B" locomotive built.|
|1923||C||First 100 ton locomotive completed. For display at the Pacific Logging Congress|
|A||Last wood frame Class "A" built.|
|1925||C||Steel Frame replaced cast iron|
|1925||C||Vestibule cabs were offered|
|Counterbalance added to dampen vibration|
|1927||C||Heaviest Climax locomotive built - 108 tons - Timberland Development Corp. - Ladysmith, British Columbia - Canada|
Note: Some dates are "cut off" dates and others are "available" dates.
- "Cut off" dates are where a former option was discontinued or "replaced" by the company in favor of another option. The key word used is "replaced".
- "Available" dates are where a new option was offered for installation on new locomotives, but did not mandatorily replace a former option. Because a new option was "made available" in a certain year, it doesn't necessarily mean customers began ordering the new option in that same year. The key words used for this in the text is "offered" or "available".
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References: Unless otherwise noted, the information on this page is based on developments and dates noted in: Climax - An Unusual Steam Locomotive by Thomas T. Taber III & Walter Casler / Railroadians of America Inc. - 1960
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