Zincs and coppers should be thoroughly cleaned every time a cell is taken out of use.
Yet in all these cases the zincshad been well-cleaned from adhering copper, &c.
Connect the three zincs together with one piece of wire, and the two carbons with another, taking care that the wire connecting the zincs, does not come in contact with the wire connecting the carbons.
This battery is extremely strong, double as strong as the bottle bichromates sold, as there are more zincs and carbons employed, but it only lasts a short time before needing to be replenished.
Another method of amalgamating zincs is to clean them by dipping them in dilute sulphuric acid and then in mercury, allowing the surplus to drain off.
Upon stopping the jack at certain properly selected positions of the rod, MD, the zincs may, at will, be kept immersed in the liquids, or vice versa.
The brake then acts, and the crank stops after making a revolution of 180°, and immersing the zincs to a maximum depth.
Mr. Mareschal's plan consists in suspending the frame that carries all the batteryzincs (Fig.
Moreover, with zincs amalgamated in a special manner, the attack is imperceptible, and the work in open circuit need scarcely to be taken into consideration.
Should the battery be faulty, it will be well to renew the zincs and recharge the battery, if the porous cell be still in good condition; if not, new cells should be substituted for the old ones.
Sometimes the zincs are seen to become coated with a black substance, or covered with crystals, rapidly wasting away at the same time, although doing little or no work; a strong smell of ammonia being given off at the same time.
It is necessary to have an ounce or so of mercury in each porous cell, covering the foot of the zinc; or the zincs may be cast short, but of large diameter, hollowed out at the top to hold mercury, and suspended in the porous pot.
This sets up a "short circuit," and the zincs are consumed whether the battery is in action or not.
The zincs should be taken from the battery liquids when not required for use; and the porous cells should be removed every night and their contents poured into a large jug kept for the purpose.
The zincs should be well amalgamated, and not touch the bottom of the cells.
See that the zincs are clean; if crystals form, either reduce strength of solution with water, or scrape zincs clean, and watch if repeated.
If in multiple, to produce large current--zincs together and carbons together.
Cells with small zincs and porous cups are of high internal resistance, those with large sheet zincs and big carbon surfaces, of low internal resistance.
The zincs should be as near chemically pure as can be obtained; the peroxide of manganese of the best quality and perfectly free from foreign substances, and the sal ammoniac the purest that can be manufactured.
In the action of this cell the oxide of copper is reduced to metallic copper and the zincs consumed, it being intended that each element will require renewal at the same time.
To Use Old Battery Zincs [87] When the lower half of a battery zinc becomes eaten away the remaining part can be used again by suspending it from a wire as shown in the cut.
In casting zincs for batteries a separate crucible, used only for zinc, is very desirable, as the presence of a very small amount of lead or other impurity will cause the batteries to polarize.
Always take the zincs out of the solution when not in use and the batteries will last longer.
What is the exact composition of the curdy mass which forms around and especially underneath the zincs of newly mounted and old gravity batteries.
Another method is to dip the zincs in dilute sulphuric acid and then pour on a little mercury, but these methods, except in the case of the Fuller battery, are wasteful of mercury.
Is there any real advantage in amalgamating the zincs of the above batteries?
If the zincs have been carefully cleansed and the water is pure, no current flows as is shown by the lamp remaining dark.
These cells were of peculiar construction, and differed from the regular style in that the zincs were drawn up and held clear of the electropoion fluid by slight fastenings, which terminated in glass bulbs blown in the tops.
Cobb had selected this battery on account of its great strength, and for the reason that it would remain inactive for an indefinite time, provided the zincswere kept out of the fluid.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "zincs" in a variety of sentences. We hope that you will now be able to make sentences using this word.
