A practical treatise on mechanical dentistry . perfect safety, even when the copper has become as thin as paper;and then, when an opening has been fairly eaten through, steam willescape from between it and the iron shell, below the packing joint,giving timely notice that a new lining is required, which can beinserted at moderate expense, and render the vessel good, and safeas new. A peculiar and important feature of these vulcanizers is in placing RUBBER OR VULCANITE BASE. 3O7 the thermometer bulb within a mercury bath, outside the steam-chamber, relieving it entirely from the danger of being
A practical treatise on mechanical dentistry . perfect safety, even when the copper has become as thin as paper;and then, when an opening has been fairly eaten through, steam willescape from between it and the iron shell, below the packing joint,giving timely notice that a new lining is required, which can beinserted at moderate expense, and render the vessel good, and safeas new. A peculiar and important feature of these vulcanizers is in placing RUBBER OR VULCANITE BASE. 3O7 the thermometer bulb within a mercury bath, outside the steam-chamber, relieving it entirely from the danger of being crushed orchecked by the pressure of steam, as is liable to happen when it isexposed to the steam itself, necessitating its frequent replacement. In the accompanying illustration the time and gas regulator isalso shown. This regulator (the Coolidge-Lewis) is without doubtthe most convenient and perfect in its action and adjustment of anyyet constructed. The pointer is so constructed that it acts as a stop by coming incontact with the inlet tu
Size: 1177px × 2123px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1903
