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:
May. 09, 1989
Filed:
Dec. 09, 1987
Albert A Wilkins, Coventry, GB;
Wickman Bennett Machine Tool Company Limited, Coventry, GB;
Abstract
A lathe comprising first and second headstocks having respective rotatable spindles carrying a respective workpiece gripping devices, the second headstock being presented towards the first headstock, and being relatively movable towards and away therefrom so that a workpiece gripped by the gripping device of the first headstock can be transferred to the gripping device of the second headstock. Movable tool carrier means associated with the first and second headstocks, whereby machining operations can be performed on workpieces held in the gripping devices of the first and second headstocks, and there is means for monitoring the angular positions of the spindles whereby rotational datum positions of the spindles can be established. A first drive and positioning means is provided for rotating the first spindle, and for positioning said first spindle angularly in predetermined relation to its rotational datum position, and, second drive and positioning means is provided for rotating said second spindle and for positioning said second spindle angularly in predetermined relation to its rotational datum position. The invention further resides in methods of transferring a workpiece between spindles in such a lathe.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile