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:
Jun. 21, 1977
Filed:
Jun. 16, 1976
Charles P Collins, Torrington, CT (US);
Bernard P Lampietti, Goshen, CT (US);
Torin Corporation, Torrington, CT (US);
Abstract
A spring coiling machine with an improved drive means has a pair of feed rolls for advancing wire from a source of supply to a coiling station. Coiling tools at the station obstruct feed movement and form coil springs and a cut-off tool successively severs the springs. The coiling tools and cut-off tool are operated from a camshaft driven by a first electric motor and a second electric motor drives the feed rolls. Continuous rotation for both camshaft and feed rolls is provided by the electric motors and a mechanism operated by the camshaft lifts an upper feed roll to terminate feed roll gripping action on the wire and to thus terminate wire feed at the completion of each spring. The first or camshaft motor serves as a lead motor and the feed roll motor as a follower. A digital feedback from the first motor is introduced to the control system therefor and also as an input to a second control system for the feed roll motor. The second motor also has its own digital feedback and a 'ratio set' input is provided through its control system thus accommodating manual selection of motor speed ratio and selection of wire feed length and spring configuration.