INCLUDING
Batteries, Wires and Wiring, Circuits, Pushes, Bells,
Burglar Alarms, High and Low Water Alarms,
Fire Alarms, Thermostats, Annunciators,
and the Location and Remedying
of Troubles.
BY
NORMAN H. SCHNEIDER,
Author of “The Study of Electricity for Beginners,”
“Care and Handling of Electric Plants,” etc., etc.
SECOND EDITION, ENLARGED
NEW YORK
SPON & CHAMBERLAIN, 123 LIBERTY STREET
LONDON
E. & F. N. SPON, Limited, 57 HAYMARKET, S.W.
1913
[No. 4]
Copyright 1904
Copyright 1913
By SPON & CHAMBERLAIN
The Camelot Press, 16–18 Oak St., New York
iii
Among all the applications of electricity todomestic or commercial uses, few are as widespreadas the electric bell. Practically every buildingused for a dwelling, storage or manufacturerequires an electric bell, annunciator or alarmsystem.
This book was written to explain in practicallanguage how an electric bell system operates andhow it is installed; its success shown by its largesale has resulted in this new edition which bringsthe subject up to date.
Many new diagrams of annunciator and burglaralarm systems have been added, together with descriptionsand illustrations of wiring elevators forelectric bells, wiring for door openers, the use oftransformers for furnishing suitable ringing currentfrom electric light circuits; and high voltagebells intended to be used on other than the customarylow voltage battery circuits.
The author expresses his acknowledgment to theWestern Electric Company for diagrams of dooropener circuits in connection with their interphonesystems, to Edwards and Company of New Yorkfor diagrams of fire alarms, burglar alarms andannunciators, and to the Westinghouse Companyfor illustrations of bell-ringing transformers.
v
| Introduction | |
| Page | |
| Introduction. The principle of an electric bell. | ix |
| Chapter I | |
| The Leclanche cell—Polarization—Setting tip—The dry cell—The gravity cell—Connecting up cells | 1 |
| Chapter II | |
| The single stroke bell—The shunt bell—The differential bell—The continuous ring bell—The waterproof bell—Forms of gongs—The buzzer—Long distance bells—The relay—The push—Three point or double contact push—Floor push—Door pull—Indicating push | 9 |
| Chapter III | |
| Bell wires—Joints—Running wires—How to put up a door bell—Combinations of bells, pushes an ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN!Sitemize Üyelik ÜCRETSİZDİR! | |