Asset Overview
The driving pinion revolves continuously and drives the gear
through ordinary gear teeth except when the "beaver-tail"
stop mechanism comes into action. The cam, whose shape is
reminiscent of that of a beaver's tail, is intermittently controlled by two rollers.
Further information about this mechanism can be found in
_"Ingenious Mechanisms for Designers and Inventors"_, vol. 1 (1930), Industrial Press Inc., ed. Franklin D. Jones.
![](http://christophe.yamahata.fr/sketchfab/beaver-tail_stop_mechanism.png)
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Original CAD files from [trinityscsp](https://grabcad.com/library/beavertail-indexer-mechanism-1). Animation generated in **Blender**.