Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 235
Nose ScrewedShank, Square-holeWasher Fig. 156—^Model boiler fittings … loafer way Model Boiler Fittings 233 a large boiler, it will be found suitable on the smallermodels working at very low pressure. The working press-ure o^ the valve is regulated by means of the springshown. This is done by moving the nut either up ordown; down if the pressure is to be reduced and…
Machinery
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