New Britain herald., 1923-10-19
I'LL TELL THE WORLD
 NOT EMPTY THREAT
Sound Ampllhtrs May Make Il
 Possible N. H. Bristol Says

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 The old fashioned train caller al
 the his city fsilEead station ls deemed
 The hlus uniformed, hFass huilened
 s'aHlelsls Aho wandsrs about through
 lAs crowds Of waiting passengers
 shouting ualnlellisable sounds as
 trains pull in and out Of The ssaiieAi
 is fading away silA the cigar store
 IHaian, the wooden horse in The sads
 aisras shen, the curly tailed pug dog and the God fslsss Our Home moi 10, hanging just over the family ai- bum in the ald.fashianed paflor.
 Hsnesforth train eallnlg Will be done with the aid of automatic ''aadlr ophone" or mechanical annauneers 50 nearly in the immediate presen. rather than the distant future Is thls innovation coming. according 10 Will liam f. Bristol at Waterbury. presls dent Of the Bristol company. and lns sentor of the andionhane, talking movies and radio amplineFk, that an order for an ampllfier system con taining 100 horns. similar In shape and size 10 photograph horn has been placed for inc New York Central and New York. New Haven and Hart. ford station al isbth St., New York,
 Negotiations also are under way for a similar one for the polo grounds in New York
 Professor Bristol addressed and demonstrated sound amplifers 10 the first meeting or the season Of the American society Of Mechanical En- Kineers in this city last evening. The meeting was held At the \. NJ. [. 4, and was attended by about i5o en- Kineers and radio fans.
 .Tf n speaker has station with proper power facilities for transmit ting, one man can talk 10 a million people," said Professor Bristol in re- ferring to the radio. He explained by means of charts placed at convenient points along the wall Of the banquet hall where the meeting was held, tho technical construction Of the various receiving and transmitting apparatus.
 An interesting apparatus demon- strated by Professor Bristol was the audiophone attachment for phon- oxraph. which not only increases to q considerable extent the volume Of sound, but brings out the base and lover tones, which are entirely lost in the ordinary photograph rendi- ton.
 .sThe sound amplifier to carry voice and other sounds to further distance and talking ot larger audi ence as demonstrated last evening any trouble which might be, experienced in the future With acoustics. Two sets of horns. one ot our and one of five. rigged up for he amplifer and attached to phon- ,rraph and later rigged up to new V invented transmitter. made the plume so large that 1t was entirely oo much for the hall. This appara- us the speaker said can be amplified . any desired volume and is of con iderable value to speakers in. public ,arks, because the horns can De ,laced in different locations in the ark. thus carrying the voice to all ections.
 Outfits such as these arc being dopted for bulletin service by large ewspapers The transmitter may be laced several feet away from the peaker, who can still walk back and orth across a platform while ad- ressing a vast audience. In public arks. etc, the inventor stated horns an be located as much as mile way, permitting q man to speak to aousands of people away beyond the each of his ordinary voice.
 Due to outside interference it was npossible to give a radio demon- ration