US2525312A

US2525312A - Embroidery sewing machine

Info

Publication number: US2525312A
Application number: US79068A
Authority: US
Inventors: Prazak Emil; Kierner Anton
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-03-01
Filing date: 1949-03-01
Publication date: 1950-10-10
Anticipated expiration: 1967-10-10

Description

Oct. 10, 1950 E. PRAZAK ETAL EMBROIDERY SEWING MACHINE Filed March 1, 1949 4 Sheets-Sheet 1 W a g W W JNVEN TORS Emil P226 i, Byg

Oct. 10, 1950 E. PRAZAK ETAL EMBROIDERY SEWING momma 4 Sheets-Sheet 2 Filed March 1, 1949 Oct. 10, 1950 E. PRAZAK ETAL Y 2,525,312

' EMBROIDERY SEWING MACHINE I Filed March 1, 1949 4 Sheets-Sheet 3 IN V EN TORS 147%??? knyerkfivz'l Pra a/i;

- fizz Z 375 a Oct. 10,. 1950 E. PRAZAK ET AL 2,525,312

EMBROIDERY sEwiNG MACHINE Filed March 1, 1949 4 Sheets-Sheet 4 I 1N VEN TORS jvziwfieryer 2% 527 611 14 6;

Patented Oct. 10, 1950 UNITED STATES PATENT OFFICE EMBROIDERY SEWING MACHINE Emil Prazak, Elizabeth, and Anton Kierner, Union, N. J.

Application March 1, 1949, Serial No. 79,068

12 Claims. 1

This invention relates to improvements in sewing machines, and the invention has reference, more particularly, to means cooperative with the sewing mechanism of the machine for applying decorative embroidery to material worked upon so that said. embroidery is secured to the surface of the material by running stitches produced by the sewing mechanism.

The invention has for an object to provide, in a sewing machine, novel means for laying a plurality of embroidering threads upon the face of material worked upon in desired predetermined and cooperative pattern forming relation, such application of the embroidering threads being synchronized with the machine sewing mechanism so that the applied embroidering threads, as disposed in pattern forming relation, will be tacked to the material, by lines of running stitches produced by the sewing mechanism, in firmly and strongly attached relation to the face of said material.

The invention has for a further object to provide a plurality of transversely reciprocable embroidering thread distributing members disposed in advance of the needles of the machine sewing mechanism, and in association with the presser foot of said sewing mechanism, together with cam means operated by the drive shaft of the machine for reciprocating said distributing members in timed relation to one another, whereby to lay the embroidering threads in desired pattern forming relation, upon the face of material worked upon, preparatory to tacking the same to said material by lines of running stitches which are sewn across the pattern forming embroidering threads by the machine sewing mechanism.

Another object of the invention is to provide a novel coupling connection between the sewing machine drive shaft and the transmission actuated thereby for driving the cam means of embroidering thread distributing mechanism, whereby the latter mechanism can be quickly and easily disconnected from the machine drive shaft and manipulated to bring it into properly timed relation to the machine sewing mechanism as operated by the machine drive shaft.

Other objects of the invention, not at this time more particularly enumerated, will be understood from the following detailed description of the same.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which:

Fig. 1 is a side elevation of a sewing machine drive shaft ,an illustrative form of one cam race of the cam for actuatin the embroidering thread distributing members; and Fig. 5 is a fragmentary view showing an illustrative form of another cam race of said actuating cam. g

Figs. 6, '7, 8 and 9 are fragmentary plan views showing Various operative positions of embroidering thread distributing members as relatively moved by the actuating cam for the production of an illustrative character of embroidery pattern as shown.

Fig. 10 is a fragmentary longitudinal sectional view of the releasable coupling means by which the embroidering thread distributing mechanism is connected with the sewing machine drive shaft so as to be actuated by the latter.

Similar characters of reference are employed in the above described views, to indicate corresponding parts.

Referring to the drawings, the reference character It) indicates the bed of a sewing machine 'having an upstanding pedestal H from which projects the forwardly extending arm [2. Said arm [2 terminates in a vertically disposed head 13. Journaled in the arm I2, so as to extend longitudinally therein, is the machine [4. Mounted on the head 13, for vertical reciprocation by the usual transmission means (not shown) which is actuated by the drive shaft I4, is a needle bar 15, to the lower end of which is afiixed a needle carrier It for mounting a plurality of suitably spaced apart sewing machine needles H, which, in the illustrative machine shown, are twelve in number, arranged in a row transverse to the path of movement of material M to be operated upon by the machine. The needles I? cooperate with shuttle or like means (not shown) for the formation of sewn stitches/in manner well known to the art. Also supported by the head 13 is the usual vertically yieldable presser foot is which cooperates with the usual feed dog means (not shown) by which thematerial M operated upon is controlled and advanced over the bed 10 of the machine relative to the sewing mechanism. A strand of sewingthread S is supplied to each needle l1. Fixed on the machine arm l3, to

extend across the top thereof, is a supporting bar I9 upon and along which are mounted, in suitably spaced apart relation, a plurality of sewing thread tensioning devices 20, one for each needle IT. The strands of sewing thread S are drawn from suitable supplies thereof to respectively pass through the respective tensioning devices 2 being thence led through suitbroidering threads in place as the pattern is progressively formed. The means for manipulating and laying the embroidering threads in pattern forming relation comprises the following mechanisms: V

Aflixed to the rearward side of the head I3, to depend from its lower free end behind the presser foot I8 and sewing needles I1, is a bracket 24 provided with rearwardly projecting, horizontal bearing arms 25 which overhang the path of movement of the material M as it is advanced through the machine during the embroidering operation. Slidably supported by said bearing arms 25 for independent reciprocable movements transverse to the path of movement of the ma terial M which is to be worked upon, are a plurality of parallelly spaced slide shafts. As shown, said slide shafts comprise a forward slide shaft 26, an intermediate slide shaft 27, and a'rearward slide shaft 28. Disposed to overlie the presser foot I8, adjacently in front of and parallel to the row of sewing needles II, are a plurality of superposed transverse embroidering thread distributor members or bars. Asshown said distributor members or bars comprise a top member or bar 29, an intermediate member or bar 33, and a bottom member or bar 3|. Said distributor members or bars each terminate at their opposite ends in'rearwardly extending and upwardly inclined side arms 32 which straddle the needle carrier I6 and its needles I! and the presser foot 18, and by which said distributor members or bars are adjustably affixed, by fastening screws 33, respectively to the slide shafts 26, 21 and 28, subject to independent reciprocation by the latter transverse to the path-of movement of the material M through the machine. Each distributor member or bar is provided with a row of endwise open embroidering thread passages 34 corresponding in number and spacing to the number and spacing of the sewing needles I 'I. Said passages 34 extend through the distributor members or bars from the forward to the rearward edges thereof.

. Strands of embroidering thread E are selectively supplied to the distributor members or bars. Afiixed to the rearward side of the head I3, to extend outwardly'therefrom, is a bracket arm 35, upon the freefend portion of which is affixed a second supporting bar 36 which parallels the machine arm I2. Mountedonand along this supporting bar 36, in suitably spaced apart relation, are a plurality of embroidering thread tensioning devices 31. j The strands of embroidering thread E are drawnfrom suitable supplies thereof to respectively pass through respective ten- 4 sioning devices 31, being thence led through suitably located

thread guides

38 and 39, which are afiixed to the head I3, to selected distributor members or bars so as to be threaded rearwardly through selected passages 34 of the latter.

The means for producing independent but suitably related reciprocablemovements of the slide bars 26, 21 and 28, are consequently like reciprocable movements of the embroidering thread distributor members or

bars

29,3 0 and 3!, all in properly timed or synchronized relation to the tacking stitch forming operations of the sewing needles I! and the accompanying advance of the material M through the machine, comprises the following mechanism:

Supported by an upstanding bracket 40, the base 4I of which is affixed to the rear end of the machine bed I0, is a bearing frame 42 provided at its upper end with a gear box 43 in which is journaled a secondary shaft I4. Said secondary shaft I 4 is aligned with the-"machine and is coupledthereto so as to be driven thereby, as will be hereinafter further described. Journaled in a bearing member 44 which projects from the upper end of the bearing frame 42 and its gear box 43, transverse to the axis of the machine drive shaft I4, and outwardly relative to the rear side of the machine, is a cam shaft 45. Said cam shaft 45 is driven from the secondary shaft I4 by gearing which is housed in' the'gar box 43. Said gearing preferably comprises a worm 46 fixed on the secondary shaft I4- so as to mesh with and drive a worm gear 41 which is fixed on the camshaft 45. Secured to the outer end of the cam shaft 45, so as to be driven thereby, is an actuating cam 48 by which operative movements of the embroidering thread distributor members or bars are produced.

Pivotally supportedona fulcrum-stud 49, which 'is mountedon the bearing frame 42, is an'upwardly extending rocker arm 50, the upper end portion of which is disposed contiguous to the inner face of said actuating cam 48. The lower end of the bearing frame 42"isprovide'with an angular extension 5I' which projects from its rearward side. Pivotall'y" supported onian inner fulcrum stud'52, which is mounted in the extension 5I, is an upwardly extending rocker arm 53, the upper end portion of which is:v disposed contiguous to the outer face iof the actuating cam '48 atone side thereof. Similarly,'pivotal1y supported on an outer-"fulcrum stud 54,'whicl1 is mounted in the extension 5|, is another upwardly extending rocker arm '55, the upper end portion of :which-is disposed contiguous to the outer face of the actuatingfcam'48at'the other side thereof. Asshown, the rocker'arm 56 is interconnected with the forward slide rod 25 by a cillated to impart, through the: connecting rod .56, desired reciprocable movements to the slide shaft 26 andthus to the top embroidery thread distributor member or bar 29. The outer face of the actuating cam 48' is similarly-:prcvdied with a'suitably shapedcam race BI whichis operatively engaged by the respective roller-studs -62:and 63 with whichthe

rocker arms

53 and 55 are respectivelyprovided,whereby said latter .5 rocker arms are oscillated to impart, through the respective connecting rods and 58, desired reciprocablemovements to the respective slide shafts 2'! and 28 and thus to the respective intermediate and. bottom embroidery thread distributor members or bars 30 and 3 I.

To permit adjustment of the overalllengths of the respective connecting rods E56, 51' and 56, whereby to properly predetermine the relative positions of the slide rods 28, 27 and 28 and their distributor members or

bars

29, 39 and 3|, and so that the embroidering thread passagest i of the latter are properly related to the sewing machine needles ll, each connecting rod is provided at its rocker arm engaging end with a coupling link 52, to which said connecting rod is secured by attachment screws 65, subject to longitudinal adjustment relative to the coupling link.

As previously hereinabove pointed out, the superposed distributor members or

bars

29, 3t and 3| overlie the free end portion of the presser foot l8 so as to be subject to lift thereby, when said presser foot is raised, by its manipulating lever 66, to permit initial insertion of material M between the same and the cooperating feeddog means of the machine sewing mechanism. The presser foot l8 includes keeper lugs i8 which engage over the superposed distributor members or bars, whereby to brace the latter against upward displacement and undue vibration during the operation thereof. In order to permit such lifting movement of said distributor members or bars, the same and their side arms 32 must be capable of up and down swinging movement respectively about the axes of the slide shafts 26, 2! and 28 by which the same are supported and actuated. This requirement necessitates that the slide rods be free for rotative movement as well as sliding movement in their supporting bearings 25. To permit this, each slide bar is connected with its associated connecting rod by a swiveling connection, which, in an illustrative form thereof as shown, comprises a coupler ball 6! axially connected with a slide rod by a neck portion 68 of reduced diameter. The associated connecting rod terminates in an angular stop lug 69 adapted to abut the coupler ball, and a coupler clip '18 is secured to the connecting rod for extension therefrom over the coupler ball, saidclip terminating in a bifurcated coupler lug ii which straddles the neck portion 68 intermediate the coupler ball 6! and the end of the slide rod from which it extends.

For the purpose of illustrating the principles and mode of operation of the mechanism for manipulating and laying the embroidering threads E, the mechanism is shown by way of example as arranged to produce the illustrative embroidery pattern shown in Fig. 6. In such arrangement, outermost pairs of embroidering threads 6 are led to the top distributor member or bar 29, one pair of said threads being threaded through a pair of passages 3-5 of said distributor member or bar at one end of the row thereof, and the other pair of threads e being threaded through a pair of passages 3 at the other end of said row thereof. The cam race 59 of the actuating cam A38 is provided with alternated outthrusting sections 59 and. in-thrusting sections 59" which are equi-spaced along said race (in the illustrative case) thirty degrees apart. The rotative speed of the cam it, which turns in counterclockwise direction, is so predetermined that said race sections 59 and Ed successively function in timed relation tosuccessive tacking'stitch producing movements of the sewing machine needles IT. For example, after tacking stitches t have been formed by descent of the needles I1, an out-thrusting cam race section 59 will operate to cause the slide shaft 26 and top distributor member or bar 29 to move to the left from the position shown in Fig. 6, whereby the embroidering threads e will be swung outward across the path of tacking stitches t, so that on a succeeding descent of the needles H, succeeding tacking stitches will be carried across and sewn down over the out-swung embroidering threads 6, Whereafter an in-thrusting cam race section 59 will operate to cause the slide shaft 25 and top distributor member or bar 29 to move to the right back to the position shown in Fig. 6,.whereby the embroidering threads 6 will be swung inward relative to the last formed tacking stitches t, so that on the next succeeding descent of the needles [1, next succeeding tacking stitches will be carried across and sewn down over the thus in-swung embroidering threads 6. These operations are progressively repeated as the material M is advanced through the machine, thus producing the marginal portions of the embroidery pattern shown in Fig. 6.

The interior portions of the illustrative embroidery pattern shown in Fig. 6 are formed by two groups of the embroidering threads, viz. the group of threads 6 and the group of threads c". One group of these threads, 1. e. the threads 2', are led to the intermediate distributor member or bar 36, and the threaded through selected passages 34 of the row thereof with which said member or bar 3!] is provided; the other group ofthese threads, e. g. the threads e, are led to the bottom distributor member or bar 3|, and are threaded through corresponding selected passages 34 of the row thereof with which the member or bar BI is provided. The cam race 6! of the actuating cam s8 is provided with oppositely directed thrust sections 6| and 6! and with dwell sections 60" intermediate thereof, which (in the illustrative case) are equi-spaced along said race forty-five degrees apart. Since the

rocker arms

53 and 55 engage the cam race 61 at diametrically opposite points, it will be obvious that the slide rods 27 and 28, which are respectively actuated thereby through the connecting rods 57 and 58, will be relatively reciprocated in opposite directions, and consequently the distributor members or bars 30 and 38 will be likewise relatively reciprocated in opposite directions. Each rocker arm will be successively engaged by a thrust section M, a dwell section Bl', a thrust section GI", and then another dwell section 61", with the result that the distributor members or bars 30 and 3i will be intermittently moved in given directions, but in timed relation to successive tacking stitch producing movements of the sewing machine needles it. For example, after tacking stitches t have been formed by descent of the needles I! to cross over and sew down previously disposed portions of the threads 6 and 'e (see Fig. 7), a first step of outward movement of the intermediate distributor member or bar 30 is initiated and an opposite or inward movement of the distributor member or bar 3| is simultaneously initiated, with the result that the group of threads e will be swung outward by the member or bar 35 across the paths of tacking stitches t, while the group of threads 6" will be swung inward by the member or bar 3! across said paths of tacking stitches 12, whereby, on asucceeding descent of the needles [1, succeeding tacking stitches will be carried across and sewn down over the crossed threads e and 6''. After this, the members or bars 30 and Si will be caused to dwell in their initially advanced positions while following tacking stitches are produced (see Fig. 8), whereafter final step movements of the members or bars 30 and 3| are effected to further position the crossed threads e and e" for engagement by the next formed tacking stitches (see Fig. 9). Following these operations, the same sequence of operations are effected by movements of the members or bars 30 and 3| respectively in reversed or opposite directions. All these operations are progressively repeated as the material M is advanced through the machine, thus producing the interior portions of the illustrative embroidery pattern shown in Fig. 6; said operations being synchronized with and so as to be carried on simultaneously with the heretofore described production of the marginal portions of Said embroidery pattern.

As heretofore mentioned, the secondary shaft I4 is aligned with and coupled to the machine drive shaft I l so as to be driven thereby. The coupling connection between said secondary shaft 14' and machine drive shaft I4 is quickly and easily releasable, and to this end comprises a coupler member 12 having a socket H3 at its inner end sized to receive the hub 14 of a combined hand wheel and drive pulley 15 which is affixed to the drive shaft It. The coupler member 12 is secured to the hub 13 by at least one set screw 16. At its outer end the coupler member 12 is provided with a bore TI to receive the inner end of the secondary shaft [4, and the latter is secured to the coupling member by at least one set-screw 18. It will be obvious, that by merely withdrawing either the set screw 16 or the set screw 13, or both, the secondary shaft It may be quickly and easily released from its coupled and driven connection with the machine drive shaft Hi. This is of considerable advantage, since it permits the machine sewing mechanism, as driven by the drive shaft 14, to be set in a predetermined position, whereupon the released secondary shaft l l permits the cam 48 and its driving transmission to be easily and quickly adjusted so as to set the embroidering thread distributing mechanism relative to the machine sewing mechanism in a proper initial position which will assure the necessary timed relation of the operation of the former relative to the operation of the latter. After which timed relation is established, the set screw or screws 76 and/or 18 are again tightened to couple the machine drive shaft M in driving relation to the secondary shaft l4, whereupon properly synchronized operations of the distributing mechanism and machine sewing mechanism is assured. It will be noted that such timing adjustment of the machine may be easily and quickly accomplished without necessity for dismantling the mechanisms or disturbing the respective assembled relations of their parts.

Although in the illustrative embodiment of this invention as shown and as hereinabove described, the arrangement of superposed distributor members or bars comprises three such members or bars, it will nevertheless be understood that such number of distributor members or bars, together with the means for supporting and actuating the same, may be more or less than three, accordingly as may be desirable in connection with the production of specific pattern variations. It will also be understood'that pattern variations may be variously attained by selectively relatively spacing and positioning the embroidering threads with respect to their threaded engagement with respective distributor members or bars; by increasing or reducing the number of such em broidering threads employed in any given case; by varying the contours of actuating cam race or races; or by combinations of any one or more of these factors.

Having now described our invention, we claim:

1. In a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles supported by said head, a drive shaft for the sewing mechanism, a bearing bracket affixed to said head to project from its rear side, a plurality of transversely reciprocable slide rods slidably supported by said bearing bracket, a plurality of embroidering thread distributor members in advance of and parallel to the row of sewing needles, each distributor member terminating at its ends in rearwardly extending side arms, the side arms of the respective distributor members being affixed to respective slide rods in straddling relation to the sewing needles, each distributor member having thread passages corresponding in number and spacing to the number and spacing of the sewing needles, a plurality of rocker arms, connecting rods interconnecting said rocker arms respectively with respective slide rods, and rotatable cam means actuated by the machine drive shaft for oscillating said rocker arms to reciprocate said slide rods and distributor members in desired relative directions and in timed relation to-the operation of the sewing mechanism, whereby to lay embroidering threads served through selected passages of said distributor members in embroidery pattern forming disposition on material oper ated upon by the sewing mechanism subject to be secured to said material by runs of needle produced tacking stitches.

2. A sewing machine according to claim 1 wherein each connecting rod is provided with means for adjusting the length thereof.

3. In a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles supported by said head, a drive shaft for the sewing mechanism, a bearing bracket affixed to said head to project from its rear side, a plurality of transversely reciprocable slide rods slidably supported by said bearing bracket, a plurality of embroidering thread distributor members in advance of and parallel to the row of sewing needles, each distributor member terminating at its ends in rearwardly extending side arms, the side arms of the respective distributor members being affixed to respective slide rods in straddling relation to the sewing needles, each distributor member having thread passages corresponding in number and spacing to the number and spacing of the sewing needles, a plurality stitches, means including tensioning devices corresponding in number to the number of sewing needles for leading sewing thread to the respective needles, and means including tensioning devices corresponding to the number of embroidering threads for leading the latter threads to the distributor members.

,- 4.II1 a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles and a presser foot supported bysaid head, a drive shaft for the sewing mechanism, a bearing bracket afiixed to said head to project from its rear side, a plurality of transversely reciprocable slide rods slidably and rotatively supported by said bearing bracket, a plurality of superposed embroidering thread distributor members supported 'upon the presser foot in advance of and parallel to the row of sewing needles and subject to lift by the presser foot, each distributor member terminating at its end in rearwardly extending side arms, the side arms of the respective distributor members being secured to respective slide rods in straddling relation to the sewing needles and the presser foot, each distributor member having thread passages corresponding in number and spacing to the number and spacing of the sewing needles, and means actuated by the machine drive shaft for reciprocating said slide rods and distributor members in desired relative directions and in timed relation to the operation of the sewing mechanism, whereby to lay embroidering threads served through selected passages of said distributor members in embroidery pattern forming disposition on material operated upon by the sewing mechanism subject to be secured to said material by runs of needle produced tacking stitches.

5. In a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles and a presser foot supported by said head, a drive shaft for the sewing mechanism, a bearing bracket afiixed to said head to project from its rear side, a plurality of transversely reciprocable slide rods slidably and rotatively supported by said bearing bracket, a plurality of superposed embroidering thread distributor members supported upon the presser foot in advance of and parallel to the row of sewing needles and subject to lift by the presser foot, each distributor member terminating at its ends in rearwardly extending side arms, the side arms of the respective distributor members being secured to respective slide rods in straddling relation to the sewing needles and the presser foot, each distributor member having thread passages corresponding in number and spacing to the number and spacing of the sewing needles, a plurality of rocker arms, connecting rods interconnecting said rocker arms respectively with respective slide rods, and rotatable cam means actuated by the machine drive shaft for oscillating said rocker arms to reciprocate said slide rods and distributor members in desired relative directions and in timed relation to the operation of the sewing mechanism, whereby to lay embroidering threads served through selected passages of said distributor members in embroidery pattern forming disposition on material operated upon by the sewing mechanism subject to be se cured to said material by runs of needle produced tacking stitches.

6. A sewing machine according to claim 5, including a swivel connection for coupling each connecting rod to a slide rod to be actuated '10 thereby, and wherein each connecting rod is provided with means for adjusting the length thereof.

7. A sewing machine according to claim 6, wherein the presser foot of the sewing mechanism is provided with keeper lugs to overlie the superposed embroidering thread distributor members, whereby to brace the latter against upward displacement and undue vibration during operation thereof.

8. In a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles and a presser foot supported by said head, a, drive shaft for the sewing mechanism, a bearing bracket anixed to said head to project from its rear side, a plurality of transversely reciprocable slide rods slidably and rotatively supported by said bearing bracket, a plurality of superposed embroidering thread distributor members supported upon the presser foot in advance of and parallel to the row of sewing needles and subject to lift by the presser foot, each distributor member terminating at its ends in rearwardly extending side arms, the side arms of the respective distributor members being secured to respective slide rods in straddling relation to the sewing needles and the presser foot, each distributor member having thread passages corresponding in number and spacing to the number and spacing of the sewing needles, a plurality of rocker arms, connecting rods interconnecting said rocker arms respectively with respective slide rods, rotatable cam means actuated by the machine drive shaft for oscillating said rocker arms to reciprocate said slide rods and distributor members in desired relative directions and in timed relation to the operation of the sewing mechanism whereby to lay embroidering threads served through selected passages of said distributor members in embroidery pattern forming disposition on material operated upon by the sewing mechanism subject to be secured to said material by runs of needle produced tacking stitches, means including tensioning devices corresponding in number to the num ber of sewing needles for leading sewing thread to the respective needles, and means including tensioning devices corresponding to the number of embroidering threads for leading the latter threads to the distributor members.

9. A sewing machine according to claim 4, wherein the presser foot of the sewing mechanism is provided with keeper lugs to overlie the superposed embroidering thread distributor members, whereby to brace the latter against upward displacement and undue vibration during operation thereof.

10. A sewing machine according to claim 1, wherein the means for actuating the cam means comprises transmission means including a secondary shaft aligned with the machine drive shaft, and a releasable coupling connection between said drive shaft and said secondary shaft.

11. A sewing machine according to claim 5, wherein the means for actuating the cam means comprises transmission means including a secondary shaft aligned with the machine drive shaft, and a releasable coupling connection between said drive shaft and said secondary shaft.

12. In a sewing machine having a head, a sewing mechanism including a transverse row of spaced sewing needles and a presser foot supported by said head, a drive shaft for the sewing mechanism, a bearing bracket afiixed to said head to project from its rear side, a transversely reciprocable slide rod slidably and rotatively supported by said bearing bracket, an embroidering thread distributor member supported upon the presser foot in advance of and parallel to the row of sewing needles and subject to lift by the presser foot, said distributor member terminating at its ends in rearwardly extending side arms which are secured to said slide rod in straddling relation to the sewing needles and the presser foot, said presser foot having keeper lugs engaged over said embroidering thread distributor member whereby to hold the latter against upward displacement and undue vibration during operation thereof, and means actuated by the machine drive shaft for reciprocating said slide rod and distributor member in timed relation to the operation of the sewing machine, whereby to lay embroidering thread served by the distributor member in a pattern formation on material operated upon by the sewing mechanisn subject to be secured to said material by runs of needle produced tacking stitches.

EMIL PRAZAK. ANTON KIERNER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS