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"Thermoids, hehe haha!"Florin tractor has them
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"Thermoid" is a flexible coupling used to transmit power between two shafts that may not be true to each other. They are still widely used today.
Many examples exist, "our" Cats as example, steering shafts, drive lines on autos, large pumps (Byron Jackson Centrifugul Pumps (Reclamation District 108 still uses them and if I recall correctly they are 600 HP)) and many others. High horsepower units relied on more elements.
The "flexible" materials were of many different materials, belting, leather, paper, etc.
This is another term that is now nearly forgotten - more commonly stated as a "flexible coupling" today.
Hope this is useful -
CTS
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