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Show - - - - - Photo-Cell Photo Cell Photo.Cell PhotoCell - . Enables EnablesBlind EnablesBlind Blind to Operate OperateMachinery I Machinery SafelyImportant Safely SafelyImportant Important new mechanical de- de devic devices de device - - vic vice vices S to simplify life for retumlIlf retumutg retumlIlf8ervlcem retumutgservicemen returningservicemen 8ervlcem servicemen n who have lost their sigbt sight sigbtand sightand sightand and for 101 tor ' the upward upwards * . of 2WOOO 200000 200 ' 000 civil civilian civilIan civillan ian blind tn In the United States State * are areannounced areannounced areannounced announced by the American Aroerican Foun Foundation Foundation Foundation dation for the BhodChief BlindChief Blind Bhod BlindChief FounI I Chief of these devices In view of ofIts ofits ofIts Its wide wlde application applicat10n to the em employment employment employment ofI I ployment of blind peopir people is I * . a new newuse newuse newuse use for the versatile photo photoelectriccell electric electriccell electriccell cell ' The 'I'he Ihe foundation baa haa has adapted theelectric theelectric the theelectric electric eye principle to make makecompletely makecompletely makecompletely completely . cafe .afe afe safe the operation by byblind byblind byblind blind people of electric sewing sewine ma machines machines machines chines in workshops and In 1n their theirhomes theirhomes theirhomes homes In practice this device puts putsa puta * a safety curtain of light around the therapidly therapidly therapidly rapidly plunging needle The Th mo mo- moment mo- mo momeat moment - - ment meat the finger fingers * of the blind opera operator operator operator tor reach dangerously near the theneedle theneedles theneedle needle needles s , point and come within wthia'the wthiathe wthia'thelight withl ! ' & * thelight the thelight light circle the machine stops in a asplit asplit asplit split second . . . Another usefulmvention useful mventlon invention which wIn will wInaid willaid willaid aid sightless people in business busmess IS IScalled iscalled iscalled called the bill 'bIll ' detector This gad gadget gadget gadget get also utilizes the electric etectric eye eye.principle eyeprinciple ' . . prmclple principle and was first thought of ofby ofby ofby by a sightless Canadian George A- A - AThe A . i Www , iog iog'S"tiw f W Wf 'S"tiw Stiw ' f " y 1s z ' 5 , g $ I IThe The ' magic mae-ic mae ic - eye , " a photo-electric photo electric photoelectriccell - - - cell stops the needle of the th ( he power powersewmg powersewing powersewing sewmg sewing machine macblne as soon as the op- op operator op - p-erator p erator - . erator s fingers come within the thecircle thecircle thecircle circle of light With this attachment attachmentblind attachmentblind attachmentblind blind pers persons lIs may safely lise "Use Use " many manykinds manykinds manykinds kinds of f machines machint's machints ' Laileur Lafleur of Overbrook Ontario In Inthis Inthis Inthis this contrivance a beam of lightscans light lightscans lightscans scans the numerals of paper cur currency currency currency rency and the number of times the thehght thelight thebght hght light is reflected refiected from the b bill l is indJ lndi indJcated lndicated indicated cated by a buzzing buzzmg noise The num number numbcr numbcr ber bcr of audible sounds indicates mdlcates thedenomination the thedenomination thedenomination denomination of the billAlready bill billAlready Already In limited lumted use by sightless sightlessworkers sightlessworkers sightlessworkers workers is the audio scale Thisenables This Thisenables Thisenables enables them to weigh certain certam ob obJects oblects objects Jects lects by sound rather than by bytouch bytouch bytouch touch Here a flashing ashmg light hght is regs regrs regrstered regstered registered ! tered by a photo electric cell If U the thescale thescale thescale scale registers overweight , , , the thesightless thesightless thesightless sightless operator hears a sound of oflugh ofhigh ofhigh lugh high pitch if underweight a sound soundof soundof soundof of low pitch and if in 10 m balance no nosound nosound nosound sound at all This idea too first firstcame firstcame firstcame came to a blind bhod person Mrs Evelyn EvelynWatson EvelynWatson EvelynWatson Watson of Buffalo In war plants plantsthis plantsthis plantsthis this audio scale has such uses as aswelghmg asweighing asweighing welghmg weighing out specific amounts of ofpowder ofpowder ofpowder powder tor for fuses tuses mica for radio radiomechamsms radiomechanisms radiomechanisms mechamsms mechanisms and uniform buttons |