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:
Oct. 11, 1988
Filed:
Mar. 16, 1987
Heinrich Rake, Aachen-Laurensberg, DE;
Wolfgang Wiening, Aachen, DE;
Trutzschler GmbH & Co. KG, Monchengladbach, DE;
Abstract
An apparatus for evening a fiber lap fed to a carding machine. The latter has a licker-in, a feed table and a feed roller cooperating with one another in feeding the fiber lap to the licker-in; a drive motor connected to the feed roller; and an arrangement providing for a relative movement of the feed roller and the feed table towards or away from one another as a function of the thickness of the fiber material passing therebetween. There is further provided an excursion measuring device for generating signals representing the magnitude of the relative movement; and a control device connected to the excursion measuring device. The control device is connected to the drive motor for regulating the rpm of the feed roller as a function of the relative motion between feed roller and feed table. A delay device is connected between the excursion measuring device and the control device for delaying transmittal of signals from the excursion measuring device to the control device. An angular displacement measuring device for generating signals corresponding to an angular displacement of the feed roller is connected to the delay device for varying the extent of delay of transmittal of signals by the delay device as a function of the signals generated by the angular displacement measuring device.