The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . sing liquor through theopening h, which is closedagain immediately cock d being openedthe solution now runs intothe trough / until the levelof the liquid rises just abovethe mouth of the tubes andcloses them. When in thecourse of the vulcanising operation the level falls below the mouth of the tubes, more liquorflows from the vessel into the trough until the tubes are againclosed by the rise in level, when the flow of liquor is checked;this goes on until, when work is finished,
The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . sing liquor through theopening h, which is closedagain immediately cock d being openedthe solution now runs intothe trough / until the levelof the liquid rises just abovethe mouth of the tubes andcloses them. When in thecourse of the vulcanising operation the level falls below the mouth of the tubes, more liquorflows from the vessel into the trough until the tubes are againclosed by the rise in level, when the flow of liquor is checked;this goes on until, when work is finished, cock d is closed. In addition to the room for vulcanising waterproof cloth, thereare generally others for curing cut-sheet goods. The ventilating pipe is usually fixed on the opposite side ofthe bench from that on which the workman stands; along the topof this runs a slot, through which the noxious vapours are drawnby means of a fan connected with the pipe. From the back wallof the vulcanising bench leading towards the rubber slot there risesa sloping hood which covers the whole of the bench with the 7. Fig. 49. 98 RUBBER MANUFACTURE. dipping vessels on it filled with carbon bisulphide; as an additionalprotection to the worker, a narrow ledge of wood runs along thefront upper edge of the cover. The dipper stands in front of thebench and dips the small cut-sheet articles, by means of a forkheld in his left hand, into a vessel containing the chloride ofsulphur solution, whilst two others, sitting down, prepare thearticles for dipping by mounting each one upon a separate prongof the fork. This arrangement for vulcanisation, although it is tobe preferred to the older measures adopted for the protection of theworkman, has nevertheless its own particular weak points. Inthe first place, the continuous exhaust slot leads to an imperfectremoval of the vapours. Secondly, the sloping cover, and in par-ticular the outwardly inclined ledge at the top, are in the way, andthe workers get into
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Keywords: ., bookcentury1900, bookdecade1910, bookidmanufactureo, bookyear1919
