Fred T. Hodgson · Frederick J. Drake and Co. · leaf 438
elf-explanatory. When themoulds are extra deep, it is necessary to make two ormore sets of tenons and wedges at each angle. Whenthere are a large number of casts required the mouldends are strengthened by binding the projecting endswith hoop iron. This method has been adopted forcasting a lot of… … held together by the bolts and nuts, C, C, two on eachside. The bolts may be about % inch diameter, witha good-sized square-head at one end, and a washer andnut at the other. This, having no bottom, is termed abolted frame mould. It should be laid on a bench ormoulding board before the cast is…
