WINDSCREEN WIPERS

Earlierwhenautomobileswerejustinvented,themodelsweremissingmanyfeaturesthatwe
caneasilyfindintoday’scars.Thecarmodelsevolvedbecauseoftheproblemsfacedbythe
peoplethroughouttheyears.Themainproblemthatthedriversfacedwasvisibilitybecauseof
theclimatechanges.Accumulation ofwaterdropletsinrainyseasonandsnowflakesduring
winters onthewindscreenaffectedthetransparencyoftheglass.Invisibilitywasthemain
reasonfortheincreasingnumberofaccidentsduringthattime;thiswasthedrivingreason
whichledtotheinventionofwindscreenwipers.Weallhaveheardaboutwindscreenwipersin
ourlife,butweneverhadanopportunitytodigintoitindetail.Nowtimewewilltalkaboutits
history,whoinventedthem,howitworks,anddifferenttypesofgeometriesofwindscreen
wipers available in the market.
One can interpret windscreen wipers to be adevice that comeshandy to remove water
particles,dust,snowandotherdebrisfromthewindscreenofanautomobileprovidingbetter
visibility to the person driving the automobile.

Swiperconsistsofametalarmwhoseonesideispivotedtoapoint,andtheothersidehasa
rubberstripattachedtoit.Thefreesideofthearmwhileinmotiongenerallyundergoesan
arc-shapedgeometryforcingtheunwantedparticleslikewater,icetoleavethesurfaceofthe
windscreen.Onemightwonderhowtheymovetheanswerbeingthearmsaremostlypowered
by motors that can be either electric or pneumatic(using fluid pressure principle).