I-Pratt knot iyindlela yokubopha ithayi entanyeni nasekholoni. Yaziwa nangokuthi ifindo likaShelby kanye nePratt-Shelby. Ifindo lakhiwe nguJerry Pratt, isisebenzi se-US Chamber of Commerce. Laduma njengefindo likaShelby ngemuva kokuthi uPratt owayeneminyaka engu-92 ubudala ngaleso sikhathi elifundisa ngo-1986 intatheli kamabonakude uDon Shelby ayenomuzwa wokuthi ubengayibophela kahle ithayi lakhe emoyeni. UShelby wabe eselungisa ifindo le-Pratt nomgqoko wendawo u-Kingford Bavender futhi waligqokisa emoyeni nokhololo olusabalele lapho laligqama khona futhi ladonsa ukunaka kwalo ngokulingana nokunemba kokunquma. Ifindo le-Pratt alivamile ngoba indawo yalo yokuqala 'i-reverse side', njenge-Nicky knot, okuhlukile okuzikhululayo kwe-Pratt. Isebenzisa ubude obuncane kune-half-Windsor noma i-Windsor knots, futhi ifaneleka kahle othayi abafushane noma amadoda amade. Ngokungafani nefindo lezandla ezine, indlela yePratt ikhiqiza ifindo elilinganayo. Iwugqinsi olumaphakathi.