Datasheet · 1931
Catalog 4014: Strowger Dial Telephones and Telephone Parts
AE telephone and parts catalogue.
Datasheet · 1931
AE telephone and parts catalogue.
sruaw_~_E_~~'~)~!QMATI[ D I AL SVSTEIVIS I :n STROWGER DIAL TELEPHONES & TELEP~ONE PARTS ~! t·11 f1-'I '• CATALOGUE 4014 Made by I AUTOMATIC ELECTRIC COMPANY I CHICAGO, U. S. A. I I I Exclusive Sales Agents In United Sta t11s and Pou euions I .. AMERICAN 'AUTOMATIC ELECTRIC SAJ,.ES COMPANY 1033 W. Van Buren Street Chicaso, U.S. A . Exclusive Export Distributors AUTOMATIC ELECTRIC SALES COMPANY, LIMITED 1027 W. Van Buren Street I . Chicaso, U.S.A. Export Agents AUTOMATIC ELECTRIC SALES COMPANY, S. A . l!l!, Rue du Verier Antwerp, Belsiu!" "'' - >~- ~\. .,- ·~ . ·~ TCI Library www.telephonecollectors.info I Strowger Dial -Telephones Index Pages A Anti -Noise Monophone Hand Unit ------------------------------------- 12 B Bracket, Extension-Monophone Mounting --------------------------- 21 c Call Recorder , Telephone _______________ -------------------------------------- 15 Central-Battery Ringer Boxis --------------------------------------------- 17 Coin Box, Self-Locking ______________________________________________________ 14 Coin-Collector -------------- ________________________ ----------- ----------------- 1-4 Condensers --------------- __________ ------------- --------------------- ------------- 2 5 Condenser Brackets ------------------------------- ----------------------------- 2 5 Cords ---------------------------------------------------- ______ ---------------------- 2 6_ Cover, Dial Card ___________________________________ ---------------------------- 19 Cover Pia tes, Dia!__ _________ ----- ------------------- ----------------------------- 1 2 Pagei Monophone Extension Sets ------------------------------------------------ 7 Monophone Hand Unit, Anti-Noise ------------------------------------ 12 Monophone Induction Coils_ ------------------------------------------------- 2 7 Monophone Parts -------------------------------------------------------------- 13 Monophone Resistance Coil ------------------------------__________________ 2 2 Monophone Ringer Boxes, Central-Battery -------------------------- 1 7 Monophone Switches ---------------------------------------------------------- 2 3 ti~~~~~~~~· ir~~:s 5;(~~---5-i;1:::::::::::::::::::::::::::::::::::::::::::::::: l ~ Monophone, Weatherproof -----------------------------------------------Mounting Bracket for Extension Monophone --------------------Mountings, Dial ---------------------------------------------------------------Mouthpiece, Transmitter ----------------------------------------------------- N Number Plates, Dia'------------------------------------------------------------ 19 D Desk Sets, DiaL ______________________________________4 , 5 , 8. l 0 , l 2, l 6 Desk Sets, Loe. Batt. Simplex DiaL ____________________________________ 16 / Dial Blanks ---------------------------------------------------------------------- 12 Dial Cards ------------------------------------------------------- ----------------- i -9 Dial Card Covers (Celluloid) -------------------------------------------- 19 Dial Cover Plates --------------------------------------------------------------- 12 Dial Mounting Cups ---------------------------------------------------------- 21 Dial Number Plates ------------- ----------------------------------------------- 19 Dial Sp ring Ass em bl ies ------------------·----------------- _______ ____________ 2 0 Dial Tools ----------------------------------- ------------------------------------- 2 0 Dial. Type 24 ---------------------------------------------------------- - ______ 1 9 E Extension Boxes ------------------------ - -------------------------------------- 1 7 Extension Monophone Mounting Bracket. ___________________________ 2 I Extension Sets, Monophone________________________________________________ 7 0 Offset Base for Western Electric Desk Stand ____ ______________________ 21 p Paystations, Multi - Slot ___________________________________ _______________ l 4 , 15 Plates, Dial Cover --- ------------------------------------------------------------ 12 Pia tes , Dial Nu m her ---------------------------------------------------------- 19 ( R Radio Suppressor for Calling Device ___________________________________ 20 Receivers -------------- -------------------------------------------------------------Recorder, Telephone Cal'---------------------------------------------------Ringer Boxes, Central - Battery -------------------------------------------Ringer Boxes, Loe. Batt. Simplex Dial.______________________________ Ringers ---------------------------------------- ------------------------------ ________ F Filter Coil Unit ___ ------------------------------------------------------------- 2 0 Flush-Type Wall Telephone._ _____________________________________________ I l G Gongs, Ringer -------------- ------------------------------- --------------------- 2 4 I [nduction Coils ------ ------- ___ ---------------------- --______ -------------------- 2 7 K Key , Telephone Switching ______________________________________ ______ ______ 2 3 L Li ne and Cord Terminal Block ------------------------------------------- 25 Local-Batt. Simplex-Dial. Telephones ________________________ __________ I 6 s T Telephone Call Recorder ____________________________________________________ 15 Telephone Switching Key _______________ ------------------------------------- 2 3 Telephone.~ with Dial Blanks --------------------------------------------- I 2 Telephones with Special Features --------------------------------------- 1 2 Terminal Block, Line and Cord ----------------------------------- ------ 25 Terminal Strips ----------------------- ------------------------------------------- 2 7 Test -Telephone, Hand ------------------------- ------------------------------ 13 Tools, Dial --------------------------------------------------------------------- 2 0 Tools , Monophone ------------------------------------------------------------ 13 T ra nsm it ters ---------------------------------------------------------------------- I 8 Transmitter Mouthpiece ------------------------------------------------------ 18 w M Mine Telephone ____________________________ ________________________________c___ I 0 Mono p h one D esk Sets, Dial ----------------------------------- ---------- 4, 5 Monophone Desk _S et, Loe. Batt. Simplex Dial___________________ __ 16 Monophone Desk Sets in Color. ___________________________________________ l 0 I8 15 17 I6 24 Self-Locking Coin Box ------------------------------------------------------ 14 Simplex-Dial. Loe. Batt. Telephones ----------------------------------- 16 Spring Assemblies, Dial ----------------------------------------------------- 2 0 Switch, Mon op hone ---------------------------------------------------------- 2 3 Switching Key, Telephone __________________________________________________ 2 3 H Hand Test-Telephone ---------- ----------------------------------------------- 13 Hoo ksw itches ----------------------------------------------- --------------------- 2 2 1I 2l 2l 18 Wall Sets . Dial ___ ------------------------------------ 6 . 7, 9 , I 0 , I I . Wall Set, Flush Type __________________________________________________________ Wall Sets. Loe. Batt. Simplex Dial ________ ---------------------------Weatherproof Monophonc -------------------------------------------------- 16 II 16 II (_ (__- <;.-:j-- - -- TCI Library www.telephonecollectors.info and Telephone Parts Strowger Telephones F OR TY years, and more, of dial-telephone leadership have gone into the making of the superior telephones and accessories described herein. Pioneering the dial telephone in the United States and abroad , these telephones have received world-wide use because they are better telephones. Continuous development by an extensive research and development organization ha11 been conducted with , primarily, the following points in mind : First, to produce instruments that would be representative of all that is most modern in telephone design. Second, to make all designs practical, so as to assure the lowest first cost consistent with quality and the utmost in operating economy. Third, to provide telephone users with instruments which , because of their pleasing appearance and ease of operation, they will be proud to have and to use. We supply two general types of central -battery telephones, as well as telephones for special applications, and local-battery simplex-dialing telephones. Type 21 telephones are graceful designs of the conventional wall and desk styles. Monophones are an artistic and modern development of tl)e cradle type telephone, which , as a result of public demand , is rapidly becoming the standard instrument. Monophones in color are in increasing demand for the better residences and well-appointed offices. Standardization has made the telephone parts interchangeable, as far as possible, between wall and desk sets, and between Type 21 telephones and Monophones. This offers an unusual degree of operating economy, since only a limited stock of parts need be carried from which to make replacements in either the wall or desk styles. There are also corresponding economies in manufacture, resulting in a better value for the money expended . 3 TCI Library www.telephonecollectors.info :; ;_ - c. . : Strowger Dial Telephones The Monophone The Monophone , in all styles, is furnished with two types of anti -sidetone booster circuits . Numbers 1-A to 4 -A use a special three- winding induction coil, while Numbers 11-A to 14-A are of the "induction-coil -receiver " t ype. Th e Monophone cradle is set back from the center of the base to allow space for mounting the dial. A terminal block. to which all con nections are made , is molded as a part of the bakelite base. A six-foot cord is furnished with each desk stand. When ordering. give code number of dial number plate and dial card (see page 19 ) , and ringer frequency desired. Dial Monophone Desk Sets Nos. I-A and II-A The No. 11-A Monophone (Uses Conventional Ringer Box) Desk Set No. 11 -A uses a unique type of receiver, conta ining an induction coil which performs the same functions as the special induction coil of desk set No. 1-A. Since no exte rn al induction coil is necessary , a series-type ringer box is used . Hence, the No . 11 -A desk stand m ay be used with any conventional ringer box containing a 1 M.F. or 2 M .F . condenser. With certai n ringer boxes , simple circuit cha nges are required to correctly provide for the Monophone conn ections. Di al M o no ph o ne D esk Se t N o. I -A a nd No. 11 -A The No. 1-A Monophone (Requires Ringer Box No. 7006 or 7007) D esk Set No . 1-A uses an anti-sid etone booster circuit which employs a special three-winding induction coil. A s this induction coil is mounted in the ringer box, the ringer boxes listed below are required for use with th e No. 1-A deskstands . Metallic Ringing Co de N o. Desk Set Complete ----------------------------------------------------------- 1 1 0 I Desk Stand On! Y------------------------------------------------------------- 1 I 0 3 Ringer Box ------------- -------------------------------------------------- ------- 7 0 04 Metallic Ringing Code N o. Desk Set Complete ----------------------------------------------------------- ! 00 I Desk Stand Onl Y--------------------------------------------------------------1003 Ringer Box ---------------------------------------------------------------------- 7 0 0 6 Ground Ringing Code N o. Desk Set Complete ___ ____________ _____________________________________ ________ I I 02 Ground Ringing Desk Stand On! y -------------------------------------- ------------------------ 1 I 0 3 Ringer Box ----------------------------------------------------------------------7 00 5 Code No . Desk Set Complete ____________________________________________________________! 002 Desk Stand On! Y-------------------------------------------------------------- 1 003 Ringer Box ---------- ------------------------------------------------------------ 7 00 7 No. 11-A Monophone Parts Code N o. No. 1-A Monophone Parts Code N o. Hand Unit ------------------------------------------- ------------- L - 9 0 3 -AO Dial Sprin g Assem bl Y--------------------------------------------D- 7 3 04 7 9-A Monophone Switch ---------------------------------------------· D- 7 3 0 2 4 7 -A Desk Set Cord ·---------------------------------------------------- D- 5 4 2 2 7 5-A Resistance Coil ·--------------------------------------------------- D - 2 8 I 6 3 4-A Hand Unit ---------------------------------------------------------- L - 9 0 0-AO Dial Spring Assembly ___________________________________________ D- 73 04 7 9 -A Monophone Switch ·--------------- ------------------------------· D - 7 3 04 7 4-A Desk Set Cord ·---------------------------------------------------- D -5 4 2 2 7 3 -A For Monophones with Dial Blanks, see page 12. For Monophones in Color, see page 10. 4 TCI Library www.telephonecollectors.info and Telephone Parts The Monophone-Continued Dial Monophone Desk Sets Nos. 2 and .r 2 A dial Monophone Desk Set No. 2 or No. 12 consists of a hand unit, cradle and dial mounted on a small bakelite ringer box. The sound holes are on the bottom of the box, which is raised above the desk surface by four rubber feet, thus permitting the ringing to be clearly heard. The entire set is only 9 inches long, 5 ;J;4 inches wide and 7 J/4 inches high. A six-foot cord is used for connecting the ringer box to a terminal block on which the line ends. This terminal block is permanently mounted, but the Monophone desk set is freely movable about the desk surface, or anywhere within a six-foot radius. The terminal block and cover are of bakelite, 2 ~ inches in diameter and 1 inch in height. To provide proper dialing conditions, ground ringing circuits contain two condensers. Metallic ringing circuits require only one. D ial M o nophone D esk Set No_ 2 and No. I 2 When ordering, give code number of dial number plate and dial card (see page 19) , and ringer frequency desired. The No. 12 Monophone This desk set uses a hand unit con taining an induction-coil-type receiver. The base of the tele phone therefore contains n o induction coil. The circuit is an anti -sidetone booster circuit. The No. 2 Monophone This desk set contains a special three -winding induction coil and is wi red in an anti-sidetone booster circuit. Interior parts are easily accessible by removing the baseplate. Metallic Ringing Metallic Ringing Code No . Monophone Desk Set _______________________________________________________I 20 I Ground Ringing Code No. Monophone Desk Set -------------------------------------------------------- 2 00 1 Code N o . Monophone Desk Set ________________________________________________________I 2 0 2 Ground Ringing Code N o. Monophone Desk Set _____ ___________________________________________________ 2 0 0 2 No. 12 Monophone Parts Code N o. Hand Un it __________________________________________________________ L - 9 0 3 -A 0 Dial Sprin g Assembly ____________________________________________D - 7 3 04 7 9 -A N o . 2 Monophone Parts Code No . Hand Unit ----------------------------------------------------------- L -9 0 0 - AO Dial Spring Assembly ___________________________________________ D - 7 3 04 7 9 -A Monophone Swi tch ________________________________________________ D -7 3 04 81 -A Terminal Strip ______________________________________________________D - 1 5 5 1 3-A Induction Coil ____________________________________________________ D -28 190 I -A Line and Cord T erminal Block ______________________________D - 154 30-A Condensers (One o r Two) ____________________________________ D -6 8 97 Condenser Brackets (One o r Two) ________________________ D - 7 3 0 2 1 9 Desk Set Cord (Metallic Ring.) ------------------------- D -54 18 7 1-A Desk Set Cord (Gro und Ring. ) ---------------------------- D - 5 4 2 2 7 5 -A M onophone Switch --------------------------------------------- D - 7 3 0 2 4 8 -A Terminal Strip ----------------------------------------------------D - 15 5 13-A Resistance Coil ____________________________________________________ D - 2 81 6 34 -A Line and Cord Terminal Block -----------------------------D - 15 4 3 0 -A Condensers (One or Two) ____________________________________ D - 6 8 9 7 Condenser Bracket (One or Two )-----------------------· D - 7 3 0 2 1 9 Desk Set Cord (Meta llic Rin g.) ____________________________D - 541 8 7 1-A Desk Set Co rd (Ground Rin g. ) --------------------------- D - 542275-A For Monophones with Dial Blanks, ~ee page 12. 5 TCI Library www.telephonecollectors.info Strowger Dial Telephones The Monophone-Continued Dial Monophone WaU Sets Nos. 3 and I3 These Monophones represent the wall set in its most convenient form . The user need not stand, but may be seated within a cord 's length of the wall box . The convenience of a desk set is thus attained without sacrificing space on the top of the desk . A Monophone of this type consists of a hand unit and cradle mounted on a black-japanned steel ringer box, of the enclosed-gong type . The dial is mounted at the most convenient angle. on the cover of the box. Th e base of the ringer box is interchangeable with that of Type 21 wall telephones and ringer boxes. The wall set, complete with the hand unit, measures 9 inches in width and 12 inches in height , and projects 5 0 inches from the surface on which it is mounted . To provide proper dialing conditions, ground ringing circuits contain two condensers. Metallic ringing circuits require only one. Dial Monophone Wall Set No. 3 and No. 13 When ordering, give code number of dial number plate and dial card (see page 19 ) , and ringer frequency desired . The No. 3 Monophone The No. 13 Mono phone This wall set contains a specia l three-winding induction coil and is wired in an anti-sidetone booster circuit. base of the telephone therefore contains no induction coil. The circuit is an anti-sidetone booster circuit. Metallic Ringing Metallic Ringing Code No. Monophone Wal 1 Set ___ __ _________________________________________________ _3 0 0 I Monophone Wall Set ___________________________ _____________ _____ __________ I 3 0 I Ground Ringing Ground Ringing This set uses an induction -coil-type receiver. The Code No . Code No. Monophone Wall Set._ __________________________ _____________________ _______ 3 0 0 2 Mon op hone Wal 1 Set__ __________________________________________________ ____I 3 0 2 No. 3 Monophone Parts No. 13 Monophone Parts Code No. Code No. Hand Unit ------------------------------- ----------------- _________ L- 9 00-AO Dial Spring Assembl y ___________________________________________ D -7 3 04 7 9-A Monophone Switch --------------------------------------------- D -7 3 04 7 4 -A Induction Coil ______________________________________________________ D-281901 -A Base Terminal Strip _________ __________ __________________________D - 155 I 3-A Cover Term in a I Strip ------------------------------------------- D- I 5 5 I 5 -A Conde nsers (One or Two) ----------------------------------- D-6897 · Bracket for One Condenser ____________________________________ D - 7 3 6 84 Code No. H and Unit ---------------------------------------------------------- L- 9 0 3 -AO Dial Spring Assem bl Y------------------------------------------- D - 7 3 04 7 9-A Monophone Switch ----------------------------------------------D - 7 3 0 2 4 7 -A Resistance Coil ---------------------------------------------------- D - 2 8 I 6 3 4-A Base Terminal Strip _____________________________________________ _D-15 5 14 -A Cover Terminal Strip .___________________________________________ D-15 515-A Condensers (One or Two) ------------------------------------ D -6 8 9 7 Bracket for One Condenser. __________________________________ D - 7 3 6 84 Bracket for Two Condensers -- ------------------------------ D - 7 3 0 l 00 Bracket for Two Condensers -- ------------------------------ D - 7 3 0 l 00 For Monophones with Dial Blanks, see page 12. 6 TCI Library www.telephonecollectors.info and Telephone Parts The Monophone-C ontinued Dial Monophone Sets Nos. 4-A and I4=A These sets may be used as extension stations for both incoming and outgoing calls, or they may be used as main-line telephones in connection with a ringer box. A set consists of a bakelite case supporting a hand unit, cradle and dial. The case, which is very compact, due to the elimination of the ringer , houses a condenser, a terminal strip and (in the No. 4-A ) an induction coil. The dial is mounted on a bracket, which may be located at either end of the bo x. This adjustable bracket permits mounting the set on a wall or on either end of a desk. In any of these positions the dial is presented at a convenient angle for dialing. The dial is mounted at the time of installation. A space of on! y 3 y,! inches by 5 Yi inches is required for the wall box. An " L" bracket , which may be used to mount the Monophone at right angles to the supporting surface, is described on page 21. When ordering, give code number of dial number plate and diai card (see page 19) . The No. 4-A Monophone This set uses a three-winding induction coil in an anti-sidetone booster circuit. Dial Monophone Set No. 4-A and No . 14 -A The No. 14-A Monophone This set uses a hand unit with an induction. coil-type receiver in an anti-sidetone booster circuit. Code No . Code No. Dial Monophone Extension Set__ ________________________________ _______ -4002 Dial Monophone Extensio n Ser__ ________________________________________ l 4 02 No. 4-A Monophone Parts No. 14-A Monophone Parts Code No. Hand Unit ---------------------------- -----------------------------· L- 9 0 0 -A 0 Monophone Switch ---------------------------------------------· D - 7 3 0514-A Terminal Strip ------------------------------------ ---------------- D - 15 513-A Induction Coil ---------------------------------------------------- D- 2 8 1 9 0 1 -A Condenser --------------------------- _________________________________ D - 6 8 9 7 Dial and Bracket Assembly _____________________ _______ ____ __ _ D-84 7 4 2 Terminal Strip ---------------------------------------------------- D-15 513-A Resistance Co il ---- ------------ ------------------------------------ D-2 81634-A Conden se r ------------------------------------------------------------ D- 6 8 9 7 Dial and Bracket Assem bl Y----------------------------------- D - 84 7 4 2 Mono phone Extension Set No. 4 Monophone Extension Set No. 14 This set is the same as the No. 4-A with the exception that it has no provision for a dial. It can be used for answering-extension service on dial operated lines, or for both incoming and outgoing service on manual lines. This set is similar to the No. 14-A with the exception that it has no provision for a dial. With the exceptions du e to this difference, the parts of this set and of the No. 4 are the same as those of the No. 14-A and 4-A respectivel y. Code No. Hand Unit ---------------------------------------------------------- L- 9 0 3-AO Monophone Switch ______________________________________________ D- 7 3 0 5 18-A Code No. Code No. !Vlonophone Ex tensio n Set ·------------------------ -------------------------4 0 0 I Monophon e Exte nsion Set ____________________ ______________________________ J 40 I 7 TCI Library www.telephonecollectors.info Strowger Dial Telephones .· I I Type 2:r Telephones The Type 21 Dial Desk Set The desk stand of this set is of the offset-transmitter-post type. The base-plate may be removed by loosening one " non-losabl e" screw. A terminal block, which carries all connections, is molded as a part of the bake lite base. The dial is so mounted that it may be adjusted without being removed from the telephone. The hookswitch may be withdrawn from the post, without disturbing the wiring, b y the removal of the base plate and one screw. The transmitter assembly is attached to th e mounting neck by a simple hinge concealed in the shell , making a joint similar in appearance to a ball-and-socket joint. A six-foo t cord, " Sarco" -impregnated and s.ilk-covered , is furnished with each desk stand. For description of rin ge r boxes for these desk se ts, see page 17. When ordering, give code num ber of dial number plate and dial card (see page 19 ), and rin ger frequency desired . Height 11 Yz inches. The T ype 21 Desk Stand Diameter of base 5 Ys inches. Booster Circuit (Two-Winding Induction Coil) Metallic Ringing Ground Ringing Code No. Desk Set Complete __ ________________________ 2101 Desk Stand Onl Y------------------------------2 106 Rin ge t Box ______________________ ________ ______ _.700 1 Code No. D es k Set Complete __________________________2102 Desk Stand Only ---------------------------- 2 10 6 Rin ge r Box _____________________________ _________7 0 0 2 Anti-Sidetone Booster Circuit (Three-Winding Induction Coil) Metallic Ringing Ground Ringing Code No. Desk Set Complete ____ ______________________2 l 15 Desk Stand Only _______________________ _____2 11 7 Rin ge r Box _____________________________________ _? 0 0 6 Code No . Desk Set Complete __________ ________________ 2 l 16 Desk Stand Only ---------------------------- 21 17 Ringer Box ______________________________________7007 Desk Stand Parts The Ringer Box Receiver --------------------------------------------------------------Transmitter -----------------------------------------------------------Dial Spring Assembly---------------------------------------------Hooksprings and Mounting Plate ____________________________ Desk Set Cord_________________________________________________________ For Type 21 telephones with Dial Blanks, see page 12 8 TCI Library www.telephonecollectors.info Desk Stand No. 2106 Desk Stand No. 2117 Code N o . D -5164-A D - 3 8 2 3 7 -A D - 73 04 7 9-A D -7 84 5 6-A D -5 4 2 2 7 5 -A Code No . D -5164 -A D-38237 -A D-730479-A D- 7 8458 -A D-542273-A and Telephone Parts Type 21 Telephones-Continued The Type 21 Dial Wall Set The base and cover of the wall set are of steel. finished in durable black japan. The cover, opened by turning a screw, may be readily removed after loosening a locking plate. The transmitter is mounted by a hinge similar to that used on the desk stand. All connections are made at terminal strips, permitting the circuit to be readily changed, when so desired. A zinc cover, or sub-base, fastened to the back of the base, protects the parts from dust and damage during shipment and installation. The sub-base is grooved and punched to receive the line wires from either the top or bottom. The base of the wall set is the same as that of a ringer box, and a wall set may be converted to a ringer box, or vice versa , by changing the cover. The wall set is 10 inches wide, 9 % inches high , and 7 }'~ inches deep, measured over the transmitter and receiver. The base is 7 ~ inches wide an 9 % inches high . To provide proper dialing conditions, ground ringin g circuits contain two condensers. Metallic ringing circuits require only one. When ordering, give code number of dial number plate and dial card (see page 19 ), and ringer frequency desired . The Type 21 Dial Wall Set Booster Circuit (Two-Winding Induction Coil) Metallic Ringing Ground Ringing Code No. Wall Telephone Set__ ___ _____ ______ 2 I I 0 Code No. Wall Telephone Set__ ______________ 2 I I l Anti-Sidetone Booster Circuit (Three-Winding Induction Coil) Metallic Ringing Ground Ringing Code No . Wall Telephone Set__ ______________ 2 I I 8 Code No. Wall Telephone Set__ ________ ______ 2 I 19 Wall Set Parts Wall Sets Wall Sets Nos. 2110, 2111 Nos. 2118, 2119 Code No. R ccei ve r ________________ ---------------------------- D-5164-A T ra nsm i tter ------------------------------------ D - 38237-A Dial Spring Assembly _________________________ _ D -73 0479-A H ooksp rin gs and Bracket__ ___________________ _ D-730463-A Cover Terminal Strip _________________________ _ D-15515-A Inductio n Coil ------------------------------------ D-281899 -A Condensers ( One or Two) _________________ _ D -6897 Bracket for One Condenser _______ , _________ _ D -7368 4 Bracket for Two Condensers ____ ______ ____ D-730100 Code No . D -5 164 -A D-3823 7-A D-730479-A D-730502-A D - 15515-A D -281900-A D -6897 D -73684 D-730100 Interior View of the Type 21 Dial Wall Set For Type 21 Telephones with Dial Blanks, see page 12. 9 TCI Library www.telephonecollectors.info Strowger Dial Telephones Monophones Nos. I=A and I I=A, i1_n Color These Monophones are available in the following standard colors: Old Ivory, Royal Blue, Orchid, Maroon , Chinese R ed, Jade Green, Nile Green, Mahogany, Walnut and Black. The Mahogany and Walnut finishes simulate the appearance of the natural woods. Ringer boxes are furnished in black only. When ordering. specify Monophone code number, color and metal finish , in addition to code num ber of dial number plate and dial card (see page 19 ) . Monophone Desk Stand Nos. 1-A and 11-A may be obtained in ten standard colors, with either gold or chromium -·plated fittings. The hand unit , base, and cradle are molded of solid colored plastics. The dial finger plate and stop, and the metal bands around the transmitter and receiver caps are finished in either heavy chromium-plate, highly polished , or in h eavy pure gold -plate with a satin finish . Silk cords are furnish ed to match the color of the plastic material. The Mine Telephone This telephone is for use m mines, quarries., b oiler rooms or wherever unusual strength and moisture-proof construction are desirable. The cast-iron case is heavily coated with black rust-resisting paint. It is provided with two doors , each moisture-proofed by means of a gasket. The outer door has a cam-type locking handle. and a strong lock, normally protected by the handle. The telephone working parts are mounted on the inner door, which is opened only for installation and repair. The terminal block is mounted behind this door, and holes are provided in the top and bottom of the case for 0 inch conduit. A pipe-plug is furnished for plugging the unused hole. The rin ger is mounted under a cast-iron hood on the top of the case, and is fitted with three-inch, loud-ringing gongs. Ringer connections are made through insulated brass rods which pass through the case, making a water-tight connection. Coils are of enameled wire and all connecting wires are impregnated with "Sarco" moisture-proofin g compound. The Mine telephone uses an anti-sidetone booster circuit with a straight-line ringer. It can also be furnished without ringer, if so specified in order. The case is 11 0 inches wide, 15 inches high and 12 }4 inches deep, over all. When ordering, give code number of dial number plate and dial card desired (see page 19) . The Mine Telephone Code No . Mine Telephone ----------------------------------------------------------------------------------7 I 0 2 10 TCI Library www.telephonecollectors.info and Telephone Parts The Flush=Type Wall Telephone All of the equipment of this telepho ne set is mounted o n a bevel-edged stee l plate, black-japan fini sh ed , which is designed to be mounted flush with the wall. Th e transmitter is so mounted on the plate that o nly the m o uthpiece projects. The plate is perforated to p ermit th e ringer to be h ea rd distinctly . All common parts are interch angeabl e with those used in teleph ones of th e Type 2 1 senes . A straight-line ringer is used . To protect the equipm ent on the back of the plate from dust and m oisture, a sh ee t -iron outlet box is placed in the wall and the plate is fastened to the box. The outlet box has knock -outs for Yz-inch conduit, and measures 1 2 in ch es high , 6 Ys inch es wide and 4 1\; inches deep. The face plate is 7 Ys inch es wid e and 1 3 inches hi gh . When o rd ering, give code number of dial number plate and dial card desired (see page 19 ) . Code No. Fl ush -Type Wall Telephone-Series CircuiL ___________________________________________________________________ J 101 Fl ush-Type Wall Telephone- Booste r C ircui r._ ________ ______ ________________________ ____________________________ 7 10 3 Th e F lush -Type Wa ll T eleph one The W eatheirpiroof Monophone The Weatherproof Monophone m eets the need for a telephone which may be exposed to variable weather conditions, ex treme humidity , o r m echanic>! lllJur y. It is specifically designed and much used for marine service. Th e telephone apparatus is contained in a heavy' cas t -brass case, which is fini sh ed in battleship gray . The cover is sea led b y a gasket, when cl osed. The Monophon e, which is similar to th e Type N o. 4 Extension Mono phone, is m ounted o n a bakelite panel, upon which a dial is also m ounted . The Monophone hand unit ~s equipped with a waterproof transmitter. C lips to keep the Monophone hand unit from s.winging , when the teleph o ne is used for marine service, are standard equipm ent. The case is 10 y,j'. inch es w id e, 16 Yz inch es high , and proj ects 8 Yz inches fro m its mounting surface. A separate rin ger is used and should be ord ered separately , if desired . The telephon e uses an anti-sideton e boos ter circuit with an induction -coil -t ype receiver. Wh en o rd erin g, give code number of di al number plate and di al card des ired (see page 19) . Code No. Weatherproof Monoph one --------------------------------------------- --------------------------------------------------- 7104 Weathe rpro of Rin ger -------------------------------------------------------------------------------------------------- ---· 7 O1 5 The Weath erp roof Monophon e .-- - - - - - - - - - - - - - - --·->i 11 ~·--~-------------~!i>t' TCI Library www.telephonecollectors.info Strowger Dial Telephones The Anti-Noise Monophone Hand Unit A special Anti-Noise M onophone hand unit can be furnished for use under very noisy conditions such as are encountered in shops and engine rooms, or on trading floors and similar locations . The unit consists of a standard black handle equipped with a regular receiver , a special transmitter, and a special transmitter cap, or mouthpiece. The transmitter has a special diaphragm which is acoustically shielded from extraneou s noises, b y mea ns of baffles. The mouthpiece is so form ed that only a small tapered hole leads to the diaphragm. The combination of transmitter and mouthpiece very effectiv ely cuts off all sounds not spoken directly into the transmitter. The A nt i-N oise M onopho ne Hand Unit C ode N o. Anti -N o ise Monophone H and U ni t. In duct ion -Coil Receive r__ __ .____________ ________________ L- 9 15 A nti-Noise Monopho ne H and Unit, P olari zed Rec eiver__ __________________________________________ L-9 17 Telephones With Dial Blanks An y standard Monophone or Type 21 telephone may be supplied with the dial and its wiring omitted , and a plate placed over the dial hole. Such telephon es are used in manual systems which are to be superseded sh ortly by automatic installations. When ordering telephones for such service, give the code number of the corresponding dial telephone, and the code number of the dial cover plate, as listed below. Dial Cover Plates The dial cover plate is of heavy brass and 1s fitted with a celluloidcovered number-card holder and number card . Type 21 Wall Set with D -49318 -A C over Plate Code No . Di al Cover Plate-Black -Japan Finished -------------- ·------------------------------ ________ D -4 93 18 -A Dial Cover Plate-Gold Plated ---------------------------------------------------------------------- D -49 3 18 -B Dial Cover P late-Ch ro mium Plated ----------------------------------------------- ____________ D -49318 -C ../ Telephones with Special Features . ,. .. •/ .._., Peculiar climatic or operating conditions sometimes make it necessary to provid e special features in telephone equipment. Strowger telephones can be supplied with any of the following features : 1. Rubber-covered interior wiring. 2. Rubber-i nsulated cords. 3 . Metal parts brass instead of steel. 4 . White-nickel finish for all parts not otherwise protected. 5. Metal insect-excluding screen over ringer box openmgs. 6. Waterproof transmitters. 7 . Transmitter cut-off buttons (Type 21 telephones only) . 8. Supersensitive transmitters. 9 . Impregnated coils. See also under Transmitters, page 18. When ordering special telephones or Mono phones, add the word " Special " to the code number of the corresponding instrument , and state as full y as possible what changes are desired . ,, 12 TCI Library www.telephonecollectors.info and Telephone Parts The Hand Test-Telephone The test-telephone is a hand unit with a light but strong aluminum -silicon alloy case, mounting a transmitter at one end and a receiver and dial at the other. The receiver is wired in series with a condenser. Two push-buttons are mounted in th e handle. When the telephone is to be used for monitoring a busy line, the button designated "C" is pushed before connecting to the line. This opens the transmitter circuit and prevents the flow of direct current, so that n ei ther a " click" nor a loss of vo lume is caused in the telephones of the persons using the line. The push-button des ignated " R " is pushed to connect a 1200-ohm resis tance in series with the line fo( testing automatic switches over a maximum resistance loop. With Dial Without Dial Code No. Telephone wi th Cord and Automatic Test Plug ____________________________L -940-AO Telephone w ith Cord and Test C lips ____________________________________________ L-940-A2 Telephone with Cord and Manual P lu g ________________________________________ L-940-A6 Code No. L-940-BO L-940-B2 L-940-B6 When ordered without di al, Di al H ole Cover can be sup plied if desired . Mounting Bracket for Hand Test-Telephone The Hand Test-Telephone This bracket , for supporting a hand test -telephon e on a wall or other vertical surface, consists of a black-japanned casting into which one end of the test telephone can be fitted . Code No. Mo un ting Bracket --------------------------------------------------------------------- ------------------------------ D -7 3 0 3 7 0 Monophone Parts Code No . C radle fo r Monoph o nes Nos. I -A and 11 -A ___________ D -6203 7-A C radle for Monophones Nos. 2 and J2 ___________________ _D -620 4 3-A Transmitter SC- I . R eg ular Type ____________________________D- 3 8 192-A Current Range-. l 2S to .2S O Amp. Transmi tter SC-2 , W ea k-Current T ype _______________ _____ D -3 8204 -A Curren t Ran ge-. 060 to . l 2S Amp . T ransmitter SC -3, Weak -C urrent Type___________________ D -3 8200-A C urrent R ange-Below .060 Amp. Transmitter SL . Local Battery T ype -----------------------D -3 82 17-A Receiver, Polarized Type __________________________________________D -S l S 4 -A Code No . Hand Unit. w ith Polarized Receiver , and T rans mi tter D -3 8 1 92-A -----------------------------------· L-900-AO Hand Unit. with Inductio n -Coil R eceive r, and Transmitter D -3 8192 -A ____________________________________L-903-AO Transmitter Cap ---------------------------------------------------· D- 3 8 2 1 0 -A Rece iver Cap ---------------------------------------------------------· D - 6 7 14 9-A Hand Unit Shel !___ __________________________________________________ D -S 2 04 8 -A Base for M onoph ones N os. 1-A and l l-A _______________ D -4 7338-A Base fo r Monophones Nos. 2 and l 2 ________________________ D -4 7 1S 7 -A Wa ll Box for Monophones Nos. 4 and 14 __________ _____ D -492 48 Wall Box fo r Monophones Nos. 4 -A and 14 -A _______ D -49462 Receiver , Induction -Coil Type ---------------------------------D -S IS S-A Mon op hone Tools A special tool is used for removing the receiver cap and the Monophone switch-cover; also for checking adjustment of Monophone -sw