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:
Feb. 14, 1978
Filed:
Mar. 24, 1977
Reinhold Schrudde, Bielefeld, DT;
Kochs Adler AG, Bielefeld, DT;
Abstract
A lubricating arrangement for the raceway of the bobbin case of a rotary sewing machine looptaker having a body with a recess formed by a bottom and a substantially cylindrical sidewall for holding the bobbin case. A hub of the looptaker has an oil collecting chamber in the form of an annular cavity with undercut inside peripheral area. The chamber receives oil supplied from an oil collecting sump. Centrifugal action causes the oil to flow through a conduit located between the oil collecting chamber and the bottom of the recess, via an adjusting device, to the raceway for the bobbin case. For regulating the oil delivery, the conduit is surrounded along a portion of its length by a borehole located in the bottom. An adjusting screw is provided for tilting the conduit in relation to the axis of the loop taker. An oil collecting sump closed by a cover, is in the bottom of the looptaker body. Oil is supplied to the oil collecting sump through a hollow looptaker shaft. The oil collecting sump has a sidewall tapering towards the bottom of the recess, and an oil line extends from the oil collecting sump outward to the oil collecting chamber for delivering oil from the sump to the collecting chamber.