H OW TO I N STALL El tric Bells Annunciators ec , , and Alar s m . lN CLUD lN G rie s Wire s a n d Wir in C irc u its P us/z e s Be lls Ba tte , g, , , , Bu r la r A la r m s H i lz a rid L o w Wa te r A l r m s g , g a , A n u n cia Fire A l a rms , Tit e r m o s ta ts , n to rs , and til e L oca tio n a n d Re m e dying T o u ble s of r . ' N O RM AN H SCH N EI DER . ‘ ' “ A uth o r o f Th e St u d o f Ele ct ricit fo r e in n e rs C are and y y B g , " H an dlin o f El e ct ric Plant s e t c g , . , e t c . SECON Q fidmomfism m ééb N EW YO RK SPON CH AMBERLA N 123 LIBER I . TY STREET LON DO N E F . N P . S O N . Limite d 57 AYMARKE W , H T. S . 1913 Co pyrigh t 1904 C o pyrigh t 1913 By SPON 8c CHAMBERLAIN The C ame o t Pre ss 16- 18 Oak St N e w l , PREFACE Amo ng all the applications of electric ity to d m mm s s fe w w o estic or co ercial u e , are as ide P c spread as the electric bell . ra tically every build in fo r a w n e m n g used d elli g, storag or a ufacture an e b nn n m requires el ctric ell, a u ciator or alar system . This book was written to explain in practical language h o w an electric b ell system operates an d h o w it is in stalled ; its suc cess show n Iby its large sale has resulted in this new edition which bri ngs s the ubject up to date . M any n e w diagrams o f annunc iator and burglar l m m n w t a ar syste s have bee added , together i h de scriptio ns and illustrations of wiring elevato rs for “ w n fo r d o n th e electric bells , iri g oor pe ers , use of transform ers for furnishing suitable ringing cur rent from electric light c ircuits ; and high voltage bells i ntended to be used o n other than the cus to m ar lo w y voltage battery circuits . Th e author expresses his acknowledgment to the ' Western Electric Company for diagrams o f door opener c ircuits in connection w ith their interphone to E w r and C n N Y systems , d a ds ompa y of e w ork v fo r m o f alarms b u r lar an d diagra s fire , g alarms o to W s C m annunciat rs , and the estinghou e o pany fo r o o f - n n n o m illustrati ns bell ri gi g tra sf r ers . 2 6 7 4 9 4 CON TEN TS I N TRODU CTI ON I T nc e an e e ct e l n . c b ntro ductio h e p ri ip l of l ri l . CH APTER I — — — Th e L e clanch e ce ll Pol ari z ation Se tti ng up Th e — — dry ce ll Th e gravity ce ll Co nn e cting up ce ll s CH APTER I I / — — Th e sin gl e st ro k e b e ll Th e sh u n t be ll Th e diffe re n — — ti al be ll Th e conti n u ou s ri ng b e ll Th e wat e r — — — proof be ll Form s of gongs Th e bu z z e r L ong — — — di stance be ll s Th e re l ay Th e p u sh Thre e p oi nt — — or doubl e contact p u sh Floor p ush Door p ull I ndicating p ush CH APTER I I I — — Be ll wire s- Joint s Runn i ng wire s H o w to p ut up a d be — C mb nat ns b e s u s e s an d b at oor ll o i io of ll , p h rie s—Fau t s in be s fau ts in w n —H t e l ll , l iri g o w to_ locate and re me dy faults V i CO N TE N TS CH APTER I V PAG E — — — Fire al arms Th e rmo stats M e tallic th e rmo stats M e r — cu ry th e rmo stat H o w to conne ct th e rmo stats — — Wate r l e ve l i ndicators Burgl ar al arms Op e n an d c se d c cu t a a m s— W nd w d an d s ade lo ir i l r i o , oor h — — — sp ri ng s Al arm matti ng Yal e lock al arm D 0 0 trip al arm CH APTER V — Th e annunciator drop Th e n e e dl e or arrow drop — Th e p e ndul um drop Wiri ng u p annu n ci ators — Re t urn or fire call syste ms D ou bl e w ire sy ste m We ste rn El e ctri c singl e w ire sy ste m 55 CH APTER V I — Thre e - wire re turn call sy st e m I n stalli ng e l e vator an — — n un ciato rs Burglar al arm ann un ci ators Clo ck — — — alarm circuit Be ll s fo r high vol tage s Be ll rin gi ng t an sf m e s— C m b n at n b e d O e n e an d r or r o i io ll , oor p r — — t e l e p hon e c ircu its Fire al arm circui t i nt e rior fi re — al arm syste m Fire al arm syst e m fo r con side rabl e are as LI ST OF I LLUSTRATI ON S Fro . 1 ' E e ct c be u s and batte l ri ll , p h , ry 2 L e clan ch e ce ll 3 Dry ce ll 4 Gravity ce ll 5 V ibrat ing b e ll 6 Sin gl e strok e b e ll 7 Shunt or short circuit be ll 8 Conti nu ou s ri ng be ll 9 Wate rp roof b e ll 10 Dome gon g 1 1 Te a gon g 12 Co w gong 13 Sl e igh be ll gong 14 Sp iral gong Re l ay and circuit 16 D oor p u sh 17 Pe ar p ush 18 D oor p u sh 19 Wall p ush 20 Floor p u sh 2 1 D oor p ull attachme nt 22 Wire j oi nt first op e ration 2 3 Wire j oint se cond Op e ration 24 Wire j o int insul ati ng 25 Se ction O f ho use showi ng wiring 26 Be ll with grou nd re turn 2 7 Pushe s in multipl e viii L I ST OF ILLUSTRATION S FI G . 2 8 Be ll s in se rie s 29 Be ll s in mul tip l e 30 Two be ll s and two p u she s 3 1 Two be ll s an d two p ushe s 32 Two be s two u s e s and o ne batte ll , p h ry 3 3 Doubl e contact p u sh 34 Grounde d be ll 3 5 Tongue te st of wiri ng 3 6 . Kn ife te st Of w iring 37 Kn ife te st of wiri n g 38 M e tallic th e rmo st at 39 M e rcury th e rmo stat 4 0 M e rcu ry th e rmo stat Circu it 4 1 Wate r l e ve l al arm 42 L e ve r wate r l e ve l al arm 4 3 High or lo w w ate r l e ve l al arm 4 4 Win dow sp ri ng for burgl ar al arm — 4 5 Burgl ar al arm clo se d circu it 46 Sp e cial be ll con ne ction for b u rgl ar al arm 4 7 Sp e cial be ll conne ction for burgl ar al arm 4 8 Burgl ar al arm an d re l ay 4 9 Wi ndo w - shade contact sp ri ng 50 Ho use w ire d fo r burgl ar al arm 5 1 D oor trip al arm 52 An nun ci ator drop 53 N e e dl e drop 54 N e e dl e drop i ndi cati ng 55 Pe n dul um drop 56 Annunci ator drop circuit 5 7 Simpl e annunciator circu it 58 Annu nciator and fire call circu it 59 Singl e - wire room and fire call L I ST O F I L L U STRATI O N S FI ~ G.