[15]It must be borne in mind that the negative element is that to which the positive pole is attached, andvice versâ(see ss. 8 and 9).
[15]It must be borne in mind that the negative element is that to which the positive pole is attached, andvice versâ(see ss. 8 and 9).
Since the compilation of the foregoing pages, adry battery, known by the above name, has found great favour with electric-bell fitters. Its peculiarity consists in the zinc element forming the outside cell. In this is placed the carbon, which is separated from the zinc by a thick paste or jelly made of gypsum and oxide of zinc. The cell can be placed in any position, works as well on its side as upright, is not subject to creeping, has an E.M.F. of about 1·5 volt, with an internal resistance of only 0·25 ohm in the round form, and 0·6 in the flat form. The Gassner dry battery polarizes much less quickly than the ordinary Leclanché. The only defects at present noticeable, are the flimsy connections, and the fact that the outer cases beingmetalmust be carefully guarded from touching one another. This can be effected by enclosing in a partitionedwooden box.
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WILLIAM RIDER AND SON, PRINTERS, LONDON.
Small crown 8vo, cloth.With many Illustrations.
MANAGEMENT OF ACCUMULATORS AND PRIVATE ELECTRIC LIGHT INSTALLATIONS.A Practical Handbook by SirDavid Salomons, Bart., M. A.4th Edition, Revised and Enlarged, with 32 Illustrations. Cloth 3s."To say that this book is the best of its kind would be a poor compliment, as it is practically the only work on accumulators that has been written."—Electrical Review.
MANAGEMENT OF ACCUMULATORS AND PRIVATE ELECTRIC LIGHT INSTALLATIONS.
A Practical Handbook by SirDavid Salomons, Bart., M. A.
4th Edition, Revised and Enlarged, with 32 Illustrations. Cloth 3s.
"To say that this book is the best of its kind would be a poor compliment, as it is practically the only work on accumulators that has been written."—Electrical Review.
ELECTRICAL INSTRUMENT-MAKING FOR AMATEURS. A Practical Handbook. ByS. R. Bottone, Author of "The Dynamo," &c. With 60 Illustrations. Second Edition. Cloth 3s.
ELECTRICAL INSTRUMENT-MAKING FOR AMATEURS. A Practical Handbook. ByS. R. Bottone, Author of "The Dynamo," &c. With 60 Illustrations. Second Edition. Cloth 3s.
ELECTRIC BELLS. ByS. R. Bottone. With numerous Illustrations.
ELECTRIC BELLS. ByS. R. Bottone. With numerous Illustrations.
In Preparation.
THE PROTECTION OF BUILDINGS FROM LIGHTNING. A Treatise on the Theory of Lightning Conductors from a Modern Point of View. Being the substance of two lectures delivered before the Society of Arts in March, 1888. ByOliver J. Lodge, LL.D., D.Sc, F.R.S., Professor of Physics in University College, Liverpool.Published with various amplifications and additions, with the approval of the Society of Arts.
THE PROTECTION OF BUILDINGS FROM LIGHTNING. A Treatise on the Theory of Lightning Conductors from a Modern Point of View. Being the substance of two lectures delivered before the Society of Arts in March, 1888. ByOliver J. Lodge, LL.D., D.Sc, F.R.S., Professor of Physics in University College, Liverpool.
Published with various amplifications and additions, with the approval of the Society of Arts.
ELECTRICAL INFLUENCE MACHINES: Containing a full account of their historical development, their modern Forms, and their Practical Construction. ByJ. Gray, B.Sc.
ELECTRICAL INFLUENCE MACHINES: Containing a full account of their historical development, their modern Forms, and their Practical Construction. ByJ. Gray, B.Sc.
ELECTRICAL ENGINEERING IN OUR WORKSHOPS. A Practical Handbook. BySydney F. Walker.
ELECTRICAL ENGINEERING IN OUR WORKSHOPS. A Practical Handbook. BySydney F. Walker.
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Transcriber's NotesPage12: changed "guage" to "gauge" ( ... cotton-covered copper wire, say No. 20 gauge ...)Page35: changed "change" to "charge" ( ... losing at the same time its electrical charge ...)Page55: changed "guage" to "gauge" ( ... 1 foot of No. 41 gauge pure copper wire ...)Page64: changed "exaet" to "exact" ( ... of the exact diameter of the turned ends of the cores ...)Page73: moved comma "Rivetting, is" to "Rivetting is," (Rivetting, is perhaps, the best mode ...)Page81: added hyphen ( ... along the short length of wire to the right-hand binding-screw ...)Page83: changed "head" to "heads" ( ... the possible defects of electric bells may be classed under four heads: ...)Page92: changed "its" to "it" ( ... until it rests against the stop or studs.)Page102: changed "contract-breaker" to "contact-breaker" (When the contact-breaker is used, ...)Page103: changed "instead" to "Instead" (Instead of the armature and clapper ...)Page132: in the Morse code for "BRING THE", the code for "H" has been corrected from two dots to four dots.Page136: changed "eletro-magnet" to "electro-magnet" ( ... if the electro-magnet were energised ...)Page137: changed "idicator" to "indicator" (since the indicator falls forwards)Page146: changed "arrangment" to "arrangement" (the size and arrangement of the batteries and wires)Page146: added comma "nails," ( ... chance contact with nails, staples, metal pipes or other wires ...)Page179: changed "carboard" to "cardboard" ( ... for our purpose we will choose cardboard.)Page179: changed "Tanstickor" to "Tãndstickor" ( ... double it to the form of a Tãndstickor match-box, ...)Page185: suspected typo (unchanged) "Emmot" should perhaps be "Emmott" (... the electrical firms of Messrs. Blakey Emmot, ...)Page186: changed "Leclanchè" to "Leclanché" ( ... polarizes much less quickly than the ordinary Leclanché.)Page187: changed two instances of "Ampére" to "Ampère" in the index (Ampère, 55 / Ampère's law, 11)
Page12: changed "guage" to "gauge" ( ... cotton-covered copper wire, say No. 20 gauge ...)
Page35: changed "change" to "charge" ( ... losing at the same time its electrical charge ...)
Page55: changed "guage" to "gauge" ( ... 1 foot of No. 41 gauge pure copper wire ...)
Page64: changed "exaet" to "exact" ( ... of the exact diameter of the turned ends of the cores ...)
Page73: moved comma "Rivetting, is" to "Rivetting is," (Rivetting, is perhaps, the best mode ...)
Page81: added hyphen ( ... along the short length of wire to the right-hand binding-screw ...)
Page83: changed "head" to "heads" ( ... the possible defects of electric bells may be classed under four heads: ...)
Page92: changed "its" to "it" ( ... until it rests against the stop or studs.)
Page102: changed "contract-breaker" to "contact-breaker" (When the contact-breaker is used, ...)
Page103: changed "instead" to "Instead" (Instead of the armature and clapper ...)
Page132: in the Morse code for "BRING THE", the code for "H" has been corrected from two dots to four dots.
Page136: changed "eletro-magnet" to "electro-magnet" ( ... if the electro-magnet were energised ...)
Page137: changed "idicator" to "indicator" (since the indicator falls forwards)
Page146: changed "arrangment" to "arrangement" (the size and arrangement of the batteries and wires)
Page146: added comma "nails," ( ... chance contact with nails, staples, metal pipes or other wires ...)
Page179: changed "carboard" to "cardboard" ( ... for our purpose we will choose cardboard.)
Page179: changed "Tanstickor" to "Tãndstickor" ( ... double it to the form of a Tãndstickor match-box, ...)
Page185: suspected typo (unchanged) "Emmot" should perhaps be "Emmott" (... the electrical firms of Messrs. Blakey Emmot, ...)
Page186: changed "Leclanchè" to "Leclanché" ( ... polarizes much less quickly than the ordinary Leclanché.)
Page187: changed two instances of "Ampére" to "Ampère" in the index (Ampère, 55 / Ampère's law, 11)