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GB666942A
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Improvements in or relating to variable speed pulleys
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GB652478A
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Improved exhaust valve for air pressure systems
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GB593078A
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Improvements in or relating to friction clutch or brake devices
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US2407060A
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Friction clutch
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GB580094A
|
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Improvements in or relating to variable speed pulleys
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GB569610A
|
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Improvements in or relating to friction clutches
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GB569019A
|
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Improvements in or relating to variable speed pulleys
|
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GB499647A
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Process for improving the strength and abrasive properties of iron
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GB497007A
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Improvements in flexible couplings for rotary shafts and like rotary bodies
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GB462625A
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Change speed driving gear
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US1991545A
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Jointing or coupling device for flexible driving belts
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GB425425A
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Improvements appertaining to high speed gearing
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GB418515A
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Improvements in jointing or coupling devices for flexible driving belts
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GB178633A
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An improved pulley for belt and the like gearing
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