US1528953A - Embroidery-machine attachment for producing cross-stitches - Google Patents

Description

March 10, 1925. 1,528,953

B. SCHWARTZ EMBROIDERY MACHINE ATTACHMENT FOR PRODUCING CROSS STITCHES Filed Aug. 4, 1922 2 Sheets-Sheet l 26 I7 6 I i March 10, 1925.

B. SCHWARTZ EMBROIDERY MACHINE ATTACHMENT FOR PRODUCING CROSS STITCHES Filed Aug. 4, 1922 2 Sheets-Sheet 2 I TTORNEY Patented Mar. 10, 1925 UNITED STATES 1,528,953 PATENT OFFICE.

BERNARD SCHWARTZ, OF NEW YORK, N. Y., ASSIGN OR TO NEW IDEA EMBROIDERY WORKS, A PARTNERSHIP OF NEW YORK.

' EMBROIDERY-MACHINE ATTACHMENT FOR PRODUCING CR-OSS-STITOHES.

' Application filed August 4, 1922. Serial No. 579,782.

To all wkom z't may concern:

Be it known that I, BERNARD SCHWARTZ, a citizen of Poland, residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Embroidery-Machine Attachments for Producing Cross-Stitches, of which the following is a specification.

The present invention relates to-embroidering machines of the sewing machine type and has for its object to provide a method of and means for producing by machine embroidery work composed of so-called cross stitches which heretofore have been made by hand.

This object I accomplish by imparting to the needle bar having two parallel needles for different threads a horizontal swinging movement in addition to its usual vertical reciprocating stitching movement, so that the threads of the two needles are caused to alternately cross each other, as will u be hereinafter more fully explained. \Vith this and other objects in view my invention consists in the novel construction,

combinationv and arrangement of parts as will be hereinafter described and defined in theappended claim.

In the accompanying drawing F 1" is a side elevation of an embroidering machine equipped with my new means; Fig. 2 a section on line 2-2 of Fig. 1; Fig. 3 a top plan view of the means for imparting a horizontal rocking movement to the needle bar and Fig. 4 shows embroidering stitches produced according to my invention.

The embroidering machine is of the ordinary sewing machine type having a head piece 11 carrying the presser foot bar 12 and the needle bar 13. In the base frame 14; in which operates the shuttle (not shown) is mountedthe main driving shaft 15 which may be driven from a suitable source of power through belt 16 and pulley 17. The needle bar has a carrier 18 in which arefixed .in theusual manner two parallel stitching or embroidering needles 19, 19each' designed for a different thread and arranged equidistantly from the axis of the needle bar. g I

The vertical reciprocatory stitching movement is transmitted to the needle bar 13 from the driven shaft 15 by means of an eccenter 20 mounted on the shaft whose eccenter rod 21 is connected to the free end of one arm 22 of a double armed lever 22 mounted on a cross spindle 23. The other arm 22 of said lever is connected by links 21 to a sleeve 25 mounted on the needle bar. The threads 26, 26 are conveyed to the needles 19, 19 from spools (not shown) through guides 27 over rollers 27, when through guide pieces 28, 29 the latter being fixed to the arm 22 and a guide piece 30 projecting upwardly from and fixed to the collar 25. Thus far the construction is well known.

To produce the desired cross stitches the needle bar in addition to the vertical re,

. each time the needles pass out of the fabric is swung horizontally-alternately in opposite directions sothat the stitches w, 3 formed by the needles 19, 19 during such swinging movement will 'cross each other, as shown in Fig. 4. This rocking movement according to the present embodiment of my invention is effected by the following attachment.

Fixed on the driven shaft 15 is a cam 31,

substantially as shown in Fig. 1, which operates a double armed lever 32 having its fulcrum on the cross spindle 23.- The upper arm 32 of said lever has pivotally connected to it a rod 33 the opposite end of which is connected by a-ball joint 34 to a sleeve 35 fixed on a vertical spindle 36 rotatively borne in the head piece 11 of the machine. This spindle has also ,mounted on it a toothed sector 37. Mounted on the upper end of the needle bar 13 is an elongated gear 38 which is adapted to mesh with said sector and which while in meshing connection with the latter can be reciprocated vertically together with the needle bar.

In use the needles 19, 19 will be reciprocated vertically through the action of the eccenterto perform the stitching operation. The cam 31 will rock the needle bar 13 so that each time the needles pass out from the fabric they will be swung horizontally around the axis of the needle bar .13, as a result of which during the subsequent downward stroke the threads will be crossed, as shown in Fig. 4.

It is understood that various changes may be made in the construction of the attachment without departing from the principle of my invention. I, therefore, do not wish verticallyreciprocating needle bar having two parallel needles, of a device for oscillating said needle bar to produce cross stitches, comprising a cam controlled double armed lever, a vertical spindle, a sleeve fixed thereon, a universal joint connecting said lever to said sleeve, a toothed sector on said spindle and an elongated gear on the needle bar meshing with said sector.

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

BERNARD SCHWARTZ.

Witnesses: A

MAX D. ORDM'ANN, JOSEPH T. MoMAnoN.

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