Patent ID: 8646396
Filing Date: 2014-02-11
Classification: D05C

Abstract:
1. A tufting machine for creating a cut pile carpet with two different pile heights, the machine comprising a housing; a needle bar which is reciprocally movable within the housing and on which a plurality of needles are mounted, whereby, in use, as a web of backing medium is fed through the machine in a first direction, the plurality of needles reciprocate towards and away from the web in a second direction; a respective hook assembly associated with each of the needles of said plurality of needles; each said hook assembly being reciprocally mounted so as to grab each loop of yarn as it is created by a respective needle; and a knife associated with each said hook assembly and having a cutting edge, the knives being reciprocally mounted and inclined with respect to said hook assemblies so as to pressurize the knife against said respective hook assembly; wherein at least one of said hook assemblies is provided with upper and lower hooks each having a cutting edge at a lower edge thereof and a means for selectively directing the yarn onto one of the upper and lower hooks; each respective knife having a single cutting edge arranged to co-operate with both the upper and lower hooks to cut each loop of yarn seized by said at least one hook assembly with a scissor action whether the loop is on the upper or lower hook; a relief being provided between the knife and the lower hook allowing the knife to clear the lower hook when the cutting edge of the knife approaches the cutting edge of the upper hook.