Evening Star Newspaper, March 22, 1931, Page 112

.lCTLIQES ’ PRODUCES GREAT QUANTITIES IN B OF GOLD AND SILVER EVERY THE: MAP HIGH LIGHTS OF HISTORY - LTS SHAPE APPROPRIATELY SUGGESTS A LARGE INVERTED CHEST, WITH THE LID OPEN, POURING OUT ITS TREASURES. 2/ i ® ¢ o o e o ® s o o e o o a o o AVE YOU EVER NOTICED HOW CLOSELY OF MISSOURI AND GEORGIA RE TATES ER? The Story of the Telephone — Part 1 'oww WE LIVE IN AN AGE OF SCIENTIFIC MARVELS . EACH YEAR BRINGS ITS CROP OF NEW INVENTIONS ADDING TO THE CONVENIENCE AND COMFORT OF MAN.... WE ARE S0 ACCUSTOMED> 70 THESE MIRACLES, MANY OF WHICH ARE EMPLOYED OR ENJOVYED BY ALL OF US EVERY DAY, THAT WE TAKE THEM FOR GRANTED. EACH OF THESE MECHANICAL SERVANTS HAS AN INTERESTING STORY BEHIND IT, AND NONE- 1S MORE FASCINATING THAN THAT OF THE TELEPHONE . ... MECHANISM THAT BELL DESIGNED WAS QUITE SIMPLE - TWO"VIBRATING REEDS,ONE AT EACH END> OF ATELEGRAPH WIRE-. THE VIBRATING REED WAS MERELY AFLAT PIECE| OF STEEL CLOCK SPRING PLACED OVER THE POLES OF AN ELECTRO-MAGNET g8 WITH ONE END LEFT FREE SO THAT 1T WOULD> VIBRATE WITH AWHINING SOUND WHEN THE ELECTRIC CIRCUIT WAS CLOSED> . AS THE CURRENT FLOWED THROLGH THE- WIRE THE RECEIVER ,WHOSE SPRING ) WAS TUNED> TO EXACTLY THE SAME PITCH AS THAT OF THE TRANSMITTER. , WOULD VIBRATE ANP REPRODUCE THE WHINE .- ITwWAS BELLS IDEATO BREAK UP THE WHINE INTO MORSE CODE "DOTS AND DASHES™ TO SPELL OUT MESSAGES. . . . » BELL WENT TO THE ¥ SHOP OF CHARLES WILLIAMS, A MANU- FACTURER OF YELEGRAPH INSTRUMENTS,IN COURT STREET, BoSTON, AND HAD Six SETS OF VIBRATING REEDS MADE FROM HIS 7 DESIGNS. ETE oY T BewLs VIBRATING REEPD ... 1847-1922 - ~THE INVENTOR OF THE TELEPMONE WAS ALEXANDER GRANAM BELL , A ScoTCHMAN BY BIRTH (BorN IN EDINBURGH-1847) AND> AN AMERI- CANBYADOPTION . . 2 ¢ 4 o« & » ~ ANY NUMBER OF ELECTRIC MESSAGES COULD BE CARRIED SIMULTANEOUS- LY OVER ONE WIRE ; THE PROBLEM WAS TO SEPARATE THEM AT THE RECEIVING END TO MAKE THEM INTELLIGIBLE . BELL PLANNED TO USE 6 TRANSMITTERS, EACH TUNED TO A DIFFERENT PITCH AND EACH WITH A RECEIVER OF CORRESPONDING PITCH AT s THE OTHER END . N WHEN ALLTHE P TRANSMITTERS WERE P> SENDING AT ONCE,THE P RECEIVERS woulLp VIBRATE, EACH PICKING UP AND REPRO-~ DUCING THE MESSAGE OF THE TRANSMITTER TO WHICH IT WAS WEBER? . o Ve o »'s WHEN ONLY ONE TRANSMITTER WAS SENDING,ITS OWN RECEIVER WOUILD VIBRATE ANDTHE OTHER FIVE REMAIN SILENT. . . -« THomMAS A.WATSON,A TALENTED YOUNG ELECTRO-MECHANICIAN,WAS ASSIGNED To MAKE BELLS INSTRUMENTS . THIS WAS THE BEGINNING OF A WARM FRIEND SHIP BETWEEN WATSON AND BELL .THE FORMER LATER BECAME THE PROFESSOR'S REGULAR ASSISTANT. STORY BEGINS INTHE FALL OF 1874 EN BELL WAS PROFESSOR OF VOCAL IOLOGY AT BOSTON UNIVERSITY AND - 1§ DEAF-MUTES TO SPEAIKK BY A METHOD KNOWN 'AS “"VISIBLE SPEECH ™, THAT HIS FATHER HAD INVENTED. . . . SYSTEM COULD ONLY S| ATATIME , BELL WAS CO HIS INVENTION WHEN PERFECTED - BRING HIM FAME AND FORTUNE . . . . . SOMETIMES ATTHE END OF THE DAY THE PROFESSOR MET WATSON AT WILLIAMS' SHOP AND THE TWO EX- PERIMENTED WITH THE HARMONIC TELEGRAPH UNTIL FAR INTO THE NIGHT. INTHE EVENINGS BELL WORKED, ON AN INVENTION THAT HE CALLED THE HARMO! IC TELEGRAPH , AN INSTRUMENT BY WHICH HE HOPED TO MAKE IT POSSIBLE TO TRANSMIT SIX OR MORE MESSAGES OVER ONE TELEGRAPH WIRE AT THE SAME TIME-, PITAL FOR EXPERIMENTAL OBTAINED FINANCIAL AND GARDINER HUBBARD>, WHO WERE IMPRESSED WITH THE FEASIBILITY OF THE HARMONIC TELEGRAPH . . . . \ ALL THROUGH THE WINTER BELL STRUGGLED WITH HIS WHINING BATTERY OF VIBRATING REEDS. THE RESULTS WERE DISCOURAGING, BUT THE INVENTOR UNKNOWINGLY WAS ON THE TRACK OF A GREAT DISCOVERY. — 70 BE CONTINUED>.