United States Patent (19) 11) Patent Number: 4,809,412 Nelson 45) Date of Patent: Mar
United States Patent (19) 11) Patent Number: 4,809,412 Nelson 45) Date of Patent: Mar. 7, 1989 54 APPARATUS FOR PRODUCING A 3,433,007 3/1969 Myers . NOVELTY NUB YARN 3,653,196 4/1972 Pike ................................... 57/350X 3,795,367 3/1974 Mocarski. (75) Inventor: Thomas L. Nelson, Georgetown, Del. 3,852,857 12/1974 Etbridge et al. ...................... 28/255 73 4,119,253 10/1978 Benson .............. ... 28/252 X Assignee: E. I. Du Pont de Nemours and 4,212,152 7/1980 Roman ...... ... 28/271 X Company, Wilmington, Del. 4,453,297 6/1984 London, Jr. et al. ............ 28/258 X 21) Appl. No.: 46,090 FOREIGN PATENT DOCUMENTS Filed: May 5, 1987 22) 45-14580 5/1970 Japan ..................................... 28/271 48-25387 7/1973 Japan ..................................... 28/258 Related U.S. Application Data 51-60749 5/1976 Japan .................................. 28/271 (62) Division of Ser. No. 804,408, Dec. 4, 1985, Pat. No. 51-75156 6/1976 Japan. ... 28/271 4,697,317. 60-17135 1/1985 Japan. ... 28/271 60-17134 1/1985 Japan ..................................... 28/271 51 Int. Cl." ........................... D02G 1/16; D02J 1/06 (52) U.S. C. ........................................ 28/271; 28/258; Primary Examiner-Robert R. Mackey 57/209; 57/350 57 ABSTRACT (58) Field of Search ......................... 28/252,258, 271; A substantially twist-free, crimped, continuous, multifil 57/209,350 ament yarn containing randomly-spaced, tightly entan (56) References Cited gled nubs and the process and apparatus used for mak ing such yarns is disclosed. The nub yarn is made by U.S. PATENT DOCUMENTS feeding a substantially entanglement-free, multifila 1,997,771 4/1935 McGowan .
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