Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
290 words
In a false-twisting apparatus for producing crimps in filament yarns comprising: a first set of two spaced pulleys, a first endless belt having a backing member applied between said two spaced pulleys to have a straightly extending region therebetween and having a plurality of endless longitudinally extending, transversely spaced projecting ridges integrally formed on said backing member of this first belt, a second set of two spaced pulleys, a second endless belt having a respective second backing member applied between said second set of two spaced pulleys to have a straightly extending region therebetween and having at least one endless longitudinally extending projecting ridge integrally formed on said second backing member, said straightly extending region of said second belt being parallel with and opposite to the straightly extending region of said first belt, in staggered relation thereto, the direction of travel of said straightly extending region of said second belt being the opposite of the direction of travel of said first belt, said at least one projecting ridge in the straightly extending region of said second belt being positioned between two adjacent projecting ridges in the straightly extending region of said first belt, and means for adjusting the parallel distance between the straightly extending regions of the first and the second belts to enable the required false-twisting to be given to filament yarns fed from one of the projecting ridges in the straightly extending region of one of said belts to a projecting ridge in the straightly extending region of the other of the belts and therefrom to the next projecting ridge in the straightly extending region of said one of said belts in alternate contact with the respective projecting ridges in the straightly extending regions of these two belts.
Claim 2
Dependent Claim
290 words
In a false-twisting apparatus for producing crimps in filament yarns comprising: a first set of two spaced pulleys, a first endless belt having a backing member applied between said two spaced pulleys to have a straightly extending region therebetween and having a plurality of endless longitudinally extending, transversely spaced projecting ridges integrally formed on said backing member of this first belt, a second set of two spaced pulleys, a second endless belt having a respective second backing member applied between said second set of two spaced pulleys to have a straightly extending region therebetween and having at least one endless longitudinally extending projecting ridge integrally formed on said second backing member, said straightly extending region of said second belt being parallel with and opposite to the straightly extending region of said first belt, in staggered relation thereto, the direction of travel of said straightly extending region of said second belt being the opposite of the direction of travel of said first belt, said at least one projecting ridge in the straightly extending region of said second belt being positioned between two adjacent projecting ridges in the straightly extending region of said first belt, and means for adjusting the parallel distance between the straightly extending regions of the first and the second belts to enable the required false-twisting to be given to filament yarns fed from one of the projecting ridges in the straightly extending region of one of said belts to a projecting ridge in the straightly extending region of the other of the belts and therefrom to the next projecting ridge in the straightly extending region of said one of said belts in alternate contact with the respective projecting ridges in the straightly extending regions of these two belts.
Claim 3
Dependent Claim
24 words
In a false-twisting apparatus according to claim 1, said projecting ridges each has an outer surface which is of a rounded, semi-circular cross section.
Claim 4
Dependent Claim
18 words
Apparatus as in claim 1 including means for preventing expansion and elongation of said first and second belts.
Claim 5
Dependent Claim
24 words
Apparatus as in claim 3 wherein said preventing means includes cotton yarn embedded in the said backing members of said first and second belts.
Claim 6
Dependent Claim
67 words
Apparatus as in claim 1 wherein said second belt backing member has at least a second endless longitudinally extending projecting ridge integrally formed on said second backing member and being transversely spaced from said one ridge thereon, one of said projecting ridges of said first belt being positioned between said one and second ridges of said second belt in the straightly extending region of said second belt.
Claim 7
Dependent Claim
22 words
Apparatus as in claim 5 wherein each of the projecting ridges on each of said belts has a rounded, semi-circular cross section.