US256318A - Feank n - Google Patents

Description

(No Model.)

F. YN. HATHAWAY & G. A. LOOMIS.

SEWING MACHINE SHUTTLE. N0. 256,318. 'Patented Apr. 11,1882.

N. PETERS, Fhmmbagnplun wnhingtm. D. C,

r.Unirse STATES' PATENT @einem LFRANK N. HATHAWAY AND CHARLES A. LOOMIS, F SPRINGFIELD, MASS..

SEWING-MACHINE SHUTTLE.-

SPECIFICATION forming' part of Letters Patent No. 256,318, ldated. April 11, 1882.

Application tiled February 3, 1882.

To all whom it may concern Beit known that we, FRANK N. HATHAWAY and CHARLES A. LooMrs, both of Springfield, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in Shuttles for Sewing-Machines, of which the follow-ing is a specification and description.

The object of our inveution'is. to provide a shuttlewhich 'islight, durable, and strong, and which will move in the raceway of themachine with the minimum amount ofnoise, cheap in its construction, and whose thread-controlling devices are effective, and are easily made and adjusted; and we accomplish this by the ,mechanism and construction substantially ashereinafter described, and illustrated in the accompanying drawings, in which- Figure I is a plan view of the sheet-metal blank from which our improved shuttle is made. Fig. 1I is a side view ofthe blank after being bent up to f'orm'the shuttle. Fig. IlIis a side view/ot' the shuttle with a portion ofthe nose broken away, and showing the threadcontrolling appliances secured and adjusted in place. Fig. lVis a topview of Fig. III. Fig. V is a transverse section at line A of Fig. III, looking toward the nose of the shuttle. Fig. Vl is a transverse section at the same line, looking toward the heel or rear -cnd of the shuttle. Fig. VIIisa plan and edge view ofthe tensiousprin g. Fig. VIII is a plan view of the blank from which the bobbin-spring holder is formed, and Fig. IX is an end view ot' the bobbin-spring holder after being formed from the blank.

In thedrawings,Fig.Irepresentsourshuttleblank punched out in a single piece from suitable sheet metal-sheet-steel of the desired thickness being preferred-and the end, as 1,

.of this blank is of such form that when the blank is bent into the form shown in Fig. II the outer edges ofthe part, asl, will tit prop erly the pointed end of the part 2, the edges of the part l being kbent down all around to meet thel edges of the pointed end of the part 2, as shown in Fig. II. .The part 1 then forms the nose of the shuttle, the part2 forms the face-plate, and the part 5 forms the frame and heel of the shuttle.

(No model.)

It' desirable, in forming up a shuttlelin this manner from sheet-steel small projections, as

3, may be made on the edges ofthe part lof the blank to enter corresponding reeesses,as

' 4, inthe edges of the pointed end of the blank,

vextending parallel therefrom fora short distance,'and then outward and away from each other, and with a hole near each end. When thus bent into form its shape is shown in Fig. IX, 'in which 1l is a cylinder, open at one end and closed at the other by the projections, as 12, which extend inward, each about half the diameter of the cylinder, toward each other. A small cylindrical plug, as I3, (shown in Fig. IIL) with a small cavity in the end, is inserted in the open end of the cylinder, with a small spiral spring inside, 'and the parts, as l0, are riveted or otherwise secured tothe inside of the face-plate, inside the cavity formed byfthe part l, as shown clearly in Fig. Ill. The small cavity in the end of the plug, as 13, receives' one of the conical ends of the bobbin, and a small cavity is made on the inside of the frame at 14 to receive the other conical end of the bobbin, and the spiral spring within the cylinder 11 of Fig.III forces the plug, as 13, against the bobbin, and the latter against the opposite end of the shuttle, so that the bobbin is always firmly heldin place. A tension-sprin g, as 7, is pivoted by a screw, as 8, to one edge of the face-plate of the shuttle, on the inside,

said spring being provided with a threadnotch, as 9, and adistributing-bar, as1 6, is secured to the opposite edge of the inside of the face-plate.

The tension-spring, as 7, may be swung out ward on its pivot,.as shown in dotted lines in Fig. IV, and the bobbin being secured ,in the shuttle, the thread is passed from the bobbin over into the thread-notch, as 9, and then backward beneath the tension-spring, and the latter being swung inward into place, the thread is held between the spring and the face-plate more or less firmly, according as the spring is held more or less firmly against the face-plate by its screw, as S. rlhe thread then passes to the opposite edge of thc faceplate and out through the distributing-bar, as 6, and thence to the needle.

To remove the bobbin from the shuttle, the former is pressed against the plug, as 13, forcing the latter into the cylinder, as 11, when the opposite end ol' the bobbin isfree from the cavity in the shuttle, and another bobbin is inserted by placing its conical end in the cavity in the plug, as 13, pressing the latter in, and securing thcoppositc conical end in its cavity in the shuttle.

It' greater tension is desired on the bobbinthrcad, the screw, as S, is turned in more or less until the desired tension is obtained.

1t will be perceived that this shuttle is very light, and will consequently move in the raceway ot the machine with less noise than the ordinary heavier shuttles, and it will move with a certain amount of elasticity, as it is made of thin sheet metal, which possesses a certain degree ot' elasticity which cast metal does not possess.

Having illus described ourinvention, what we claim as new is machines, of a tension-spring, as 7, provided with a t.hreadnotch, 9, and pivoted at one end to swing outward, and adapted to be adjusted against the inside of the faceplate with more or less pressure, an adjusting-screw, 8, for adjusting the said spring, and a bobbin-holder and spring secured to theface-plate of the shuttle at the pointed end, and a distributing-bar, as 6, secured at both ends to the face-plate of the shuttle, substantially as described.

3. In an improved shuttle for sewing-machines, a bobbin-spring holder formed up from a thin sheet-metal blank in a single piece, and secured to the face-plate and provided with a cylinder adapted to contain a spring, and a plug to receive the end of the bobbin and hold the latter in place, substantially as described.

FRANK N. HATHAVVAY. CHARLES A. LOOMIS.

Witnesses:

T. A. Gnarls, CHAs. H. WOOD.

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