The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1989
Filed:
Jul. 13, 1987
Dan W Benfield, Easley, SC (US);
Platt Saco Lowell Corporation, Easley, SC (US);
Abstract
A textile comber drawbox shut-off and method are disclosed for terminating the supply of suction air to the drawbox during doffing. Suction air shut-off assemblies B are placed in suction lines 56 leading to vacuum cleaning nozzles 50, 52 of the drawback which clean coiler units A during drawing off of combed sliver 48. Pivotal flapper valves C are tied together by air cylinder D for simultaneous operation. In accordance with the method, upon a prescribed amount of sliver being deposited in cans 26, the comber and supply of suction air are stopped. Following doffing of the full cans, the comber is restarted and the supply of suction air remains shut off by closed valves C. After approximately 60 seconds, of high operation speed, the closure valves C are simultaneously actuated to once again establish suction air in drawbox enclosure 28 for cleaning. Elimination of excessive suction in enclosure 28 during restart eliminates air interference in coiler tube 40 caused by air seepage in a direction opposite that to which sliver 48 travels through coiler tube 40.