The polishing and plating of metals; a manual for the electroplater, giving modern methods of polishing, plating, buffing, oxydizing and lacquering metals, for the progressive workman . nd remedied beforeit is necessary to replate a lot of work. As the quan-tity of current passing through a tank bears a definite rela-tion to the pressure of that current, the value of knowingthe pressure instead of guessing at it may be readily seen,particularly, when the plater is running solutions requiringdifferent pressures from the our dynamo, as is the case whenusing silver, copper, nickel and brass solut
The polishing and plating of metals; a manual for the electroplater, giving modern methods of polishing, plating, buffing, oxydizing and lacquering metals, for the progressive workman . nd remedied beforeit is necessary to replate a lot of work. As the quan-tity of current passing through a tank bears a definite rela-tion to the pressure of that current, the value of knowingthe pressure instead of guessing at it may be readily seen,particularly, when the plater is running solutions requiringdifferent pressures from the our dynamo, as is the case whenusing silver, copper, nickel and brass solutions all at onetime. 186 THE POLISHING AND PLATING OF METALS. Fig. 61 shows a voltmeter in its case, the terminals forconnections not being visible in the illustration. Fig. 62shows a method of mounting a voltmeter on a board so asto get a number of connections to various points arranged touse conveniently with one instrument. In this case the but-ton marked -f- is wired to the voltmeter terminal and this isto be connected with the positive main conductor of thedynamo and any one of the lower binding posts to the nega-tive main conductor, so that closing the circuit on this post. Fig. 62. Showing voltmeter on switchboard adapted to connect atpoints in the electrical circuit of the plating room. will give the pressure on the mains. A wire runs from the in-strument through a groove in the back of the board to the postof the switch, and each knob in the arc of the circle is wiredin the same way to a separate binding post below it. The tankwires are connected to these posts, which are numbered tocorrespond with the switch knobs, for convenience, andthe plater can see his pressure on any tank or the main lineby swinging his switch lever to the button connected withthat tank and looking at the dial of his voltmeter. No. 20insulated copper wire should be used in wiring up such aboard and the connections in all cases should be made be- THE POLISHING AND PLATING OF METALS. 187 tween the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectro, bookyear1904
