US1440569A - Sewing-machine shuttle - Google Patents

Description

Jan. 2', 1923. 1,440,569

. L. E. WEAVER. SEWING MACHINE SHUTTLE.

-' Fl'L-ep Fee. 28, 192.

FIG. 1

F I [3-- E INVENTUR ATTEIRNEYS Patented Jan. 2, 192

arias;

LUCIUS E. WEAVER. OF EAST HAMPTON, CONNECTICUT, ASSIGNOR T0 SUMMIT THREAD GOIEIPANY, OF EAST HAMPTON, CONNECTICUT, A CGR-PORATTON OF Ivi'AINE.

SEtVING-IMACHINE SHUTTLE.

Application filed February 28, 1921. Serial No. 448,688.

To all to hem it may concern:

Be it known that 1, Loans E. VVEAVER, a citizen of the United States, residing at East Hampton, in the county of Middlesex and State of Connecticut, have invented new and useful Improvements in Sewing-Machine Shuttles, of which the following is a specification.

This invention relates to a rotary shuttle body having a stud on which a bobbin case is mounted, the case being provided with a tubular post, detachably confined on the stud, and constituting a bearing on which a universally wound bobbin is rotatable.

The object of the invention is to provide the shuttle body with resilient means for yieldingly retarding the rotation of the bob bin, and preventing undesirably loose and tree rotation thereof without requiring limitation of the bulk of the winding of thread, said means being caused to perform its function by the bobbin, and without manipulation by the operator.

The invention is embodied in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings forming a part of this specification,--

Figure 1 is a plan view of a shuttle embodying the invention.

Figure 2 is a section on line 22 of Figure 1.

The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 represents a shuttle body provided with the usual stud 13, on which is mounted the usual bobbin case 14, the bobbin case being separably engaged with the outer end of the stud by means-well known, and requiring no description and illustration. The stud 13 projects through the usual space provided in the body 12 for the reception of the bobbin case. The bobbin case has the usual tubular post 15, mounted on the stud 13 and constituting a bearing for a universally wound bobbin, composed of a tubular core 16 and a winding 17 of thread thereon. The bobbin is adapted to rotate loosely on thetubular post 15. The end of the case shown at the upper portion of Figure 2, is closed to form a seat or support for the inner end of the bobbin, the opposite end of the case being open, so that the outer end of the bobbin is exposed. The

jacent to and surrounds the outer end portion of the stud.

The construction thus far described involves nothing new.

In carrying out my invention, I attach to the outer portion of the body 12, as by brazing, or riveting, at the point 18, a resilient tongue 19 which projects inward from the point of attachment, and normally projects into the open end of the bobbin case 14, in position to bear yieldingly on the outer end of the bobbin, between thetubular post 15 and the perimeter of the thread winding, as shown by Figure 2. When there is no bobbin in the shuttle, the free end portion of the resilient tongue 19 projects considerably inward from the position shown by 1 Figure 2, so that when the bobbin case and a bobbin therein are applied to the shuttle body, the tongue is displaced from its normal position by the outer end of the bobbin, as shown by Figure 2, and is thereby caused to press the inner end of the bobbin against the bobbin-supporting end of the case and yieldingly retard the rotation of the bobbin, and permit the latter to rotate only as fast as is required by the call of the thread. In the type of shuttle body here shown, the resilient tongue 19 extends through a portion of the elongated opening 20 formed in one side portion of the shuttle body.

It will be seen that when the shuttle is in use, the tongue 19 is wholly-outside of the space occupied by the bobbin in the bobbin case, so that the employment or the tongue does not involve any reduction of the bulk of the winding 17, no reduction of the yardage of the winding being involved by the employment of the resilient tongue.

It will also be seen that the tongue 19 has a free end portion, formed and arranged to spring into the case-receiving space in the body 12, and adapted to be displaced by and caused to bear yieldingly on the-outer end of the bobbin, when the case and a bobbin therein are placed upon the stud, the an rangement being such that the removal of the case leaves the tongue 19 in position to be displaced and caused to perform its function Wholly by the bobbin, when the case is replaced, so that no manipulation of the tongue by the operator is required.

I claim:

A sewing-machine shuttle comprising a body forming a space to receive a portion o1 a bobbin case, a stud fixed at its base end to the body and extending through said space, a bobbin case fitted on and detachably connected to said stud adjacent its outer end and having an open end adjacent and surrounding the base portion of the stud, and a resilient tongue fixed at one end to the body and having its free end portion extending into the case receiving space of the body and through the open end oi the bobbin case, when the case is in operative position on the stud, to bear yieldingly on the inner end of a bobbin in the case substantially as and for the purpose described.

In testimony whereof I have afiixed my signature.

LUCIUS E. WEAVER.

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