Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
384 words
Apparatus for preparing spun yarn of 100 percent elastic fiber or blended spun yarn of elastic fiber and hard fiber, said apparatus comprising: a back roll means for feeding fiber from a supply thereof, a front roll means spaced from said back roll means for drafting fiber received therefrom, a stretch breaking zone and a draft zone arranged in succession in that order between the back roll means and the front roll means, an endless bottom apron means extending between the back roll means and front roll means over the stretch breaking zone and the draft zone, respective plates adjacent the back roll means and front roll means supporting the bottom apron means at the opposite ends thereof, output roll means in said stretch breaking zone for drawing fiber from said back roll means and stretch breaking said fiber, input roll means in said draft zone for receiving fiber from said output roll means and advancing the fiber to said front roll means, said output roll means including top and bottom rolls for advancing the fiber therebetween, saiD input roll means including top and bottom rolls for advancing the fiber therebetween, said bottom apron means including an endless apron member which extends on and is driven by the bottom rolls of said input and output roll means, a first top apron means in said stretch breaking zone, a second top apron means in said draft zone, each of the first and second top apron means having a respective input and output, two further plates, one adjacent the back roll means and the other adjacent the front roll means, said first top apron means including a first endless top apron member passing on said one further plate and the top roll of said output roll means in said stretch breaking zone and driven by the latter, said second top apron means including a second endless top apron member passing on said other further plate and the top roll of said input roll means in said draft zone and driven by the latter, said first and second top apron means being opposed to said bottom apron means to control the feed of the fiber therethrough, and means to adjust the pressure applied by the top apron member in the stretch-breaking zone to the bottom apron member.
Claim 2
Dependent Claim
384 words
Apparatus for preparing spun yarn of 100 percent elastic fiber or blended spun yarn of elastic fiber and hard fiber, said apparatus comprising: a back roll means for feeding fiber from a supply thereof, a front roll means spaced from said back roll means for drafting fiber received therefrom, a stretch breaking zone and a draft zone arranged in succession in that order between the back roll means and the front roll means, an endless bottom apron means extending between the back roll means and front roll means over the stretch breaking zone and the draft zone, respective plates adjacent the back roll means and front roll means supporting the bottom apron means at the opposite ends thereof, output roll means in said stretch breaking zone for drawing fiber from said back roll means and stretch breaking said fiber, input roll means in said draft zone for receiving fiber from said output roll means and advancing the fiber to said front roll means, said output roll means including top and bottom rolls for advancing the fiber therebetween, saiD input roll means including top and bottom rolls for advancing the fiber therebetween, said bottom apron means including an endless apron member which extends on and is driven by the bottom rolls of said input and output roll means, a first top apron means in said stretch breaking zone, a second top apron means in said draft zone, each of the first and second top apron means having a respective input and output, two further plates, one adjacent the back roll means and the other adjacent the front roll means, said first top apron means including a first endless top apron member passing on said one further plate and the top roll of said output roll means in said stretch breaking zone and driven by the latter, said second top apron means including a second endless top apron member passing on said other further plate and the top roll of said input roll means in said draft zone and driven by the latter, said first and second top apron means being opposed to said bottom apron means to control the feed of the fiber therethrough, and means to adjust the pressure applied by the top apron member in the stretch-breaking zone to the bottom apron member.
Claim 3
Dependent Claim
25 words
Apparatus as claimed in claim 1 comprising means for feeding roving from a second supply directly to the input rolls means in said draft zone.
Claim 4
Dependent Claim
58 words
Apparatus as claimed in claim 1 comprising a second input roll means for feeding a second fiber to said input roll means in said draft zone, said second input roll means and said input roll means in said draft zone having different surface speeds to form a second draft zone which is distinct from the first draft zone.