The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . rough and into a container beneath. Thewalls on each side of the bench where the sandparticles are apt to strike, should be protected withsheets of iron. Directly above the bench a hoodshould be placed, connected to a ventilating blower. It is quite difficult to obtain men who will operatethe foregoing apparatus. The sand blast clothingequipment is uncomfortable, especially during hotweather when the confinement in a closed room
The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . rough and into a container beneath. Thewalls on each side of the bench where the sandparticles are apt to strike, should be protected withsheets of iron. Directly above the bench a hoodshould be placed, connected to a ventilating blower. It is quite difficult to obtain men who will operatethe foregoing apparatus. The sand blast clothingequipment is uncomfortable, especially during hotweather when the confinement in a closed room,with hot, heavy gloves on the hands, and stuffyhelmet over the head, imposes severe hardship on theworkman. The present-day tendency is toward theuse of self-contained dust proof, automatic sand blast-ing machines. AUTOMATIC SAND BLAST One type of such a machine is shown in Fig. has a sand blast compartment of heavy sheet iron 146 The Modern Electroplater in which are glass windows to enable the operator toview the work. Large articles undergoing sand blast-ing are placed in or removed from the compartmentthrough a side-door. Small articles may be thrust. Fig. 96.—Sand Blast Cabinet(Mott Sand Blast Mfg. Co.) through the front hand holes. It is seen that theseopenings have cloth protectors to prevent injury tothe workmans arms while the blast is in pressing the foot lever, the air valve is opened,allowing a blast of sand to be expelled against thework, which is held in the necessary positions until Mechanical Cleaning Devices 147 a clean, matt finish on all surfaces is assured. Theused sand drops back into the lower container whereit is again drawn upward through the sand pipe onanother cycle of work. Often a wire mesh is providedat the top of the sand container to catch any articlesaccidentally dropped from the hands. SAND BLAST ROLLING BARREL Another device manufactured for automaticallysand blasting small work is the rolling barrel. This
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectelectro, bookyear1920
