[print this photo with « Select service »PhotoAccessShutterflyFotokastenEZ Prints]   Gallery: David Wegmuller's image gallery    Album: The Cabinet of Curious Frivolities; Eric's museum of unique toys.    Album: Machinery    Album: Weeden, Model 702 live steam engine and accessories, USA   4 of 8

The safety valve uses a long arm on which the operator would hang a lead weight. The detents on the arm allow the operator to adjust the operating pressure of the boiler.

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Gallery: David Wegmuller's image gallery    Album: The Cabinet of Curious Frivolities; Eric's museum of unique toys.    Album: Machinery    Album: Weeden, Model 702 live steam engine and accessories, USA