Bobbin loading apparatus for sewing machines
OwnerHerman Rovininventor
Life of this patent
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Abstract
A device for automatically supplying thread to the bobbin of a sewing machine of the kind wherein there is a thread feed tube arranged to receive the thread from a bulk source, a predetermined length of the thread is delivered to a rapidly rotating bobbin for winding of the thread thereon and then the thread is severed from the source.
Claims15
Apparatus for presenting thread to a rapidly rotating bobbin comprising a carriage supported for linear reciprocal movement relative to the bobbin, means for effecting reciprocal movement of the carriage, and a thread carrier mounted on the carriage, for movement with and relative to the carriage, means for withholding forward movement of the thread carrier during a portion of the forward movement of the carriage, means for disabling the last-named means at a predetermined forward position of the carriage, and means for propelling the thread carrier forwardly relative to the carriage to advance the thread carrier to thread loading position.
Apparatus for presenting thread to a rapidly rotating bobbin comprising a carriage containing a track component, a thread carrier having a track component mounted on the carriage with its track component slidingly engaged with the track component on the carriage, a latch fixed relative to the movement of the carriage yieldably held engaged with the thread carrier, said latch withholding forward movement of the thread carrier during forward movement of the carriage, latch release means on the carriage movable into engagement with the latch at a predetermined forward position of the carriage to release the thread carrier and spring means connected at one end to the thread carrier and at its other end to the carriage extended by relative movement of the carriage and carrier and operable when the thread carrier is released to project the thread carrier forwardly to loading position.
Dependencies are inferred from the claim text.