US1277741A - Needle-threader. - Google Patents

Description

G. P. MARTINELLI.

NEEDLE THREADER.

APPLICATION mg!) JULY 5,1916.

1 ,277,741 Patented Sept, 3, 1918.

.INVENTOR BY W,

ATTORNEY GUIDIQP. MARTINELLI, on NEW YORK, N. Y.

1\I EEDLE-THREADER. I

To all whom it may concern: e

Be it known that L-Gumo P. lVIARTINELLI,

' a subject of the King of Italy, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Needle Threaders, of whlch thefollowing 1s a specificatlon.

This invention relates to needle threading devices for use in connection with sewing machines, and aims particularly to improve and generally. increase the efficiency of devices of this character. 7

A further Object of the invention is to provide a device for this purpose which may to an out of the way position during the operation of the machine.

lVith these objects in view, together with others which will appear as the description proceeds,'the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the accompanying'drawings, and particularly pointed out in the claims. v

The invention will be best understood by reference to the accompanying drawings, wherein Figure 1 is a fragmentary side elevation of a conventional form of sewing machine head and needle bar, and illustrating the application of a threading device constructed in accordance with the invention;

Fig. 2 is a detail perspective view of the threading device removed from the machine bar; and

Fig. 3 is a similar view of the threading arm support.

Referring now more particularly to the drawings, 3 indicates the .machine head, within which the needle bar 4 reciprocates in the usual manner. A needle 5 of conventional form is secured to the lower end of Specification of Letters Patent.

Application filed July 5, 1916. Serial No. 107,615.

1 Patented steps- 3191s.

the needle ban tlie samebeing by the block 6. H a Secured to the needle bar tas by a screw 7 is a thrcader arm' supporting member 8.

This member is preferably of L shaped construction as shown, andihas an angularly disposed ear 9 upon the upright portion'of the same by means of which the said member is fastened to the needle bar.

is slitted as. at 10 inwardly from oneend to provide a spring portion 11, the latter having a lug? 12 at itsextremity. The opposite endjof the horizontally disposed portion is providedwith anaperture 13.

as at 15 to the meinber8, 'the pivot pin extending through the opening 13. This arm is provided at' its lower end with an .angularly disposed foot 16, and a back plate 17. The back plate is cut away as at 18 at its juncture with the threader arm to provide a thread guide. A block 19 is arranged upon the threader arm at the foot portion thereof, and has one face alining withone wall of the thread slot 18. Secured upon this block by means of screws 20 or other suitable securing elements is an angular plate 21, the outer face of which is disposed in the same plane with the thread slot 18. This portion of the plate is provided with an opening through which a thread hook 22 extends. A backing element 23 may be arranged adjacent the outer edge wall of the guide slot 18 to facilitate engagement of a thread inserted through said slot with the hook 22. r

The threader-arm 14 is of such length as when swung to downward position, as indicated in Fig. 1 of the drawings, to aline the hook 22 at the foot end thereof with the eye ofthe needle 5. This hook is of such small dimension as will enable the same to extend through the needle eyeswithout engaging the walls thereof, and it is apparent that when in the position indicated in Fig. 1 and athread is inserted into the guide slot 18 and engaged with the hook 22, rearward swinging movement of the said arm will draw the thread held by the hook through the needle eye. When the thread has thus been drawn through the needle eye, the same may be detached from the hook, and the arm 14 swung upwardly into the position indicated by dotted lines in Fig.1. When in The horizontally disposed portion of the member 8 r The threaderarm 14 is pivotedat one end under the foremost edge of the bar 14, whereby the latter is held against downward movement.

From this description, it is apparent that I have provided a simple and efiicient means for attaining the ends set forth. The device is capable of being readily swung to such position as not to interfere with the sewing operation of the machine. The means for supporting the threader arm in upward position is capable of being easily manipulated to lower the arm when required.

It is also apparent that other changes in the ing means carried by the arm, said arm being movable from a position adjacent the needle, to a'position wherein it is engaged over the lug which acts-to retain the arm in place 2. A'needle threading attachment for sewing machines including a plate for connection to the needle bar of the machine, an arm pivotally mounted on the plate for movement toward and away from the needle, :1 diverging member in the plane of the arm and formed upon the terminal thereof to form a thread guide, a laterally extending plate carried by said terminal of the arm, a block carried by the plate, an angular plate mounted on the side of the block, and a hooked threading member carried by the angular plate and intersecting the space between the arm and diverging member.

In testimony whereof I afliX my signature in presence of two witnesses.

V GUIDO P. MARTINELLI.

\Vitnesses NICK BRACCINI, FRANCK COSTA.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0;"

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