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US2024466A
|
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Apparatus for and method of improving circulation in boilers
|
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Self supporting water bottom
|
|
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Locomotive boiler
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|
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|
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Locomotive boiler
|
|
US1991904A
|
|
Locomotive boiler
|
|
US1862796A
|
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Flange and connection for tubular heating elements
|
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US1885931A
|
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Boiler
|
|
US1819907A
|
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Crown sheet support for locomotive fireboxes
|
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US1776320A
|
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Self-supporting water-bottom structure
|
|
US1776696A
|
|
Boiler
|
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|
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Valve
|
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|
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Valve
|
|
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|
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Brick die
|
|
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|
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Plug valve
|
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US1800552A
|
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Valve and packing
|
|
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|
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Plug valve
|
|
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|
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Lubricant cartridge and method of filling lubricant compressors by means thereof
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Grease cartridge and method of filling grease guns by means thereof
|
|
US1456326A
|
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Plug cock and lubricating means therefor
|
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US1479393A
|
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Fire-box lining
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