Model: Z04 Power Machine Coupling of Pouyer
In his machine design book titled The Constructor (or The Designer) Reuleaux cites the importance of having an overrunning coupling or clutch from two different power sources. He describes two clutches for this purpose Models Z-3, Z-4. that are shown in Figures 453 and 454 in the 4th edition his book. In Pouyer's clutch, (Also known as the Pouyer-Quertier coupling) two levered pawls are attached to an outer disc on one of the shafts and engage 13 ratchet teeth on the inner hub attached to another collinear power shaft. If the shaft with the ratchet teeth runs faster than the pawl disc, the coupling slips and the shafts are disengaged.

Francis Moon 2003-07-01

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