US3013567A - Method of stitching strands of simulated hair to a workpiece and of brushing aside loose ends of hair - Google Patents

Description

y B. 'SOTZKY 3,013,567 METHOD OF STITCHING STRANDS OF SIMULATED HAIR TO A WORKPIECE Dec. 19, 1961 AND OF BRUSHING ASIDE LOOSE ENDS OF HAIR 4 Sheets-Sheet 1 Filed March 10, 1953 IN VEN TOR.

III wulalllfl Dec. 19, 1961 SQTZKY 3,013,567

METHOD OF STITCHING STRANDS OF SIMULATED HAIR TO A WORKPIECE AND OF BRUSHING ASIDE LOOSE ENDS OF HAIR Filed March 10, 1953 4 Sheets-$heet 2 f kk PIC-3.5.

IN VEN TOR.

3,013,567 STRANDS 0F SIMULATED HAIR TO A WORKPIECE 4 Sheets-Sheet 3 IN VEN TOR.

UWAwE mm @M B. SOTZKY Dec. 19, 1961 METHOD OF STITCHING STRANDS OF SIMULATED HAIR TO A WORKPIECE AND OF BRUSHING ASIDE LOOSE ENDS OF HAIR Filed. March 10, 1953 4 Sheets-Sheet 4 3,013,567 Patented Dec. 19, 1961 ice 3,013,567 METHOD OF STITCHHNG STRANDS LATED HAIR TO A WORKPIECE AND OF BRUSHING ASIDE LOOSE ENDS OF HAIR Bernard Sotzky, Flushing, N.Y., assignor to Rooted Hair, Inc, New York, N.Y., a corporation of New York Filed Mar. 10, 1953, Ser. No. 341,588 8 Claims. (Cl. 1325) This invention relates broadly to the manufacture of dolls heads and more particularly to an attachment for a high cost, chain-stitch producing sewing machine, whereby hair may be fed to the needlecontinuously and in equal quantities.

When, in the manufacture of dolls heads, a product such as vinyl plastic or any other suitable and desirable resilient material is used, it is found to be highly desirable to root hair midway its length into the scalp, thus permitting the ends of each strand of rooted hair to remain unattached, for combing and dressing. For the uninterrupted operation of the sewing machine mechanism used for this purpose, hair must be fed to the needle continuously, and for the production of uniformly perfect heads of rooted hair, simulated hair must be fed to the needle of the mechanism in equal quantities.

With this in view, it is the principal object of the present invention to provide a presser foo-t for use in association with a higher post, chain-stitch producing sewing machine, the presser foot being so constructed that a hair containing feeder may pass partly through the presser foot in order to follow the needle in its movement.

It is a further object of the present invention to provide a sewing machine mechanism of the character described with a feeder, upon which are placed transversely strands of simulated hair which are successively removed by the hooked end of the needle, the arrangement being such that all quantities of hair removed from the feeder contain substantially equal numbers of strands.

And a still further advantage of the present invention resides in the provision of an attachment for a sewing machine mechanism of the character described, the purpose of which is to wipe the loose ends of rooted hair out of the path of the vertically reciprocating needle.

And still another purpose of the present invention resides in the provision of a guard rail for the ends of the wiper arms to prevent them from slipping out of their adjusted positions.

These and other meritorious aims and advantages, which will become more fully apparent as the description hereof proceeds, are attained by the novel construction, combination and arrangement of parts, hereinafter described, and illustrated in the accompanying drawing,.

forming a material component of this disclosure, and in which:

FIGURE 1 is a partial side elevational view of a sewing machine, showing the attachments of the present invention secured thereto, the feeder being illustrated in its retracted position and the needle in its downward position.

FIGURE 2 is a diagrammatic view of the hair-containing feeder and part of the needle, showing the needle up and the feeder advanced.

FIGURE 3 is a front sectional view of the sewing machine illustrated in FIGURE 1, the section being taken on a line 3-3 of FIGURE 1.

FIGURE 4 is another sectional view, the section being taken on line 44 of FIGURE 1.

FIGURE 5 is still another sectional view, the section being taken on line 5-5 of FIGURE 4.

FIGURE 6 is a diagrammatic view in perspective of the hair-containing feeder, showing strands of hair positioned transversely thereacross.

OF SIMU- FIGURE 6a is a cross-sectional view of the hair-containing feeder shown in FIGURE 6, illustrating the track in which the feeder oscillates.

FIGURE 7 is a diagrammatic view of the hooked end of the vertically reciprocating needle, showing the needle after it has penetrated the scalp of a dolls head and has drawn a quantity of strands of hair through the scalp.

FIGURE 8 is a fragmentary view of a dolls scalp, showing a quantity of hair chain-stitched to the interior thereof.

FIGURE 9 is a detail view in perspective of the presser foot which constitutes a part of the present invention.

FIGURE 10 is a front view, partly in dot and dash lines, of a high-post, chain-stitch producing sewing machine to which the attachments of the present invention have been applied.

FIGURE 11 is a diagrammatic view of the pattern in which the needle reciprocates.

Referring in greater detail to the drawings, the numeral 20 illustrates in general the upper part of a conventional high-post, chain-stitch producing sewing machine mechanism, which is preferably used in connection with the present invention. Upper portion 20 is illustrated as comprising a machine head 21,-a needle plate 23, a vertically reciprocating needle 24, the upper end of the needle being hooked as at 26 and a needle bar 25. All of these several elements are standard equipment of sewing machine mechanisms of the type herein referred to and do not form a part of the present invention.

Extending from the front of the machine head 21 is a machine head extension 27, and extending from the back of the machine head 21 is a machine head extension 28. Extending downwardly from the machine head 21 is a presser foot bar 21a to which is attached a presser foot 22, the construction of which constitutes a part of the present invention and which will hereinafter be more fully described. A hair-containing feeder, generally referred to by the numeral 29, is oscillatingly or rockingly mounted on feeder support 30, the feeder 29 oscillating or rocking back and forth substantially on a horizontal plane in track 31. The reason for this arrangement will presently become more fully apparent.

Extending transversely through machine head 21 is a conventional horizontal drive shaft 32, which is actuated in a conventional manner by an electric motor (not shown) or in any other desirable and suitable manner.

Mounted on drive shaft 32 of machine head 21 is a sprocket 35 adapted to rotate with sprocket 38 which is mounted on shoulder screw 32a at the end of machine head extension 27. Sprockets 35 and 38 are joined by a chain 49 as illustrated in FIGURE 1 of the drawings.

Superimposed on sprocket 35 is a sprocket 36 cooperating with a larger sprocket 37 on shaft 32b at the end of machine head extension 28, sprockets 36 and 3-7 being joined by a continuous chain 39. The relative sizes of the several sprockets, as here illustrated, are such, that sprockets 35, 36 and 38 will rotate four times to each complete revolution of sprocket 37, for a purpose which will presently be explained.

Mounted on shaft 32b is a bevel gear 41 in mesh with a bevel gear 42, bevel gear 42 being mounted at one end of a vertically extending rotatable shaft 43, the said shaft 43 rotating in such manner, as to impart horizontally rotating motion to wiper 45 attached thereto. The lower portion of shaft 43 is provided with a spline 44 on which wiper 45 may move up and down. Shaft 46 rotates in bracket 47 which is an extension of member 28.

Foot bar 21a, which is a part of the machine head 21 and thus is a part of the standard and conventional equipment of the sewing machine mechanism herein referred to,

" has secured thereto by means of a set screw 54 or in any other suitable and desirable manner, a presser foot 22 constructed in accordance with the present invention.

Presser foot 22 comprises two vertically extending, spaced apart stems 50 joined across the top by a horizontal member 53 and across the bottom by a horizontal member 51, centrally of its length, member 51 is provided with an opening 52 for the passage of needle 24 therethrough as will hereinafter be further explained. Member 53 may be provided centrally thereof with a tapered opening 54a for set screw 54. A re-enforcing' bracket 53a may be secured to member 53, the other end of bracket 53 may be secured to the hub of wiper 45 by ball bearing 44a. Whenever it becomes desirable or necessary to allow for greater clearance, one of the uprights 50 may be eliminated, since the presser foot will accomplish its purpose effectively even when only one upright 50 is used.

Many kinds of hair-containing feeders or hair holders 29 may be used in connection with this invention. One type of hair-containing feeder is illustrated in the drawings. Hair-containing feeder 2? is formed from a unitary piece of material such as metal, which is bent upon itself centrally thereof to form an upper and a lower member, the two members being spaced apart as is shown in the drawings. Centrally of its front edge, a needle opening 59 may be provided, through which the hooked end 26 of vertically reciprocating needle 24 may enter during its upward stroke and engage and withdraw successive quantities of hair at the beginning of its downward stroke. At its rear, feeder 29 may be provided Wtih a plunger 57, normally urged toward the front of edge of feeder 29 by plunger shaft 66 actuated by a spring 53.

A bar 60 is provided near one of its ends with an elongated slot 61 and near its other end with another elongated slot 62. Superimposed upon sprocket 38 is an eccentric 63 to which is secured one end of a universal shaft 64, its other end being provided with an adjusting screw 65, slidably engaged in slot 61 in such manner that arm 64 will extend horizontally and bar 60 will extend vertically. Feeder 29, at the rear thereof, may be provided with an operating lug 67 engageable in slot 62 of bar 60. Substantially midway of its length, bar 68 may be fulcrumed, as at 80, to a support arm 81, which extends from member 27.

The rotatably mounted hair wiper 45 which constitutes a part of the present invention is here illustrated as comprising four arms '71 spaced equi-distant from each other, each of the said arms 71 terminating in a curved finger 72. In order to prevent fingers 72 from slipping out of their adjusted positions, there may be provided a circular track '73 in which fingers 72 rotate. Track 73 may be secured to member 51 of presser foot 22 by screws 74 or in any other suitable and desirable manner. One side of member 51 of presser foot 22 may be curved, as at 51a, the curved portion being provided with openings 39a for the passage of screws therethrough, by which feeder track support 30 may be screwed to member of presser foot 22.

The upper horizontal member 53 of presser foot 22 may be provided with an opening 21b centrally thereof for the pasasge of presser foot bar 21a therethrough, and with an opening 54a in alinement therewith for the passage of a screw or other retaining means therethrough, by which the presser foot 22 may be secured to presser foot bar 21a. Disc 70 of track 73 may be provided with a curved extension 7 9a corresponding in contour to the contour of the curved portion Sl'a of presser foot member 51, where the disc 70 of track 73 may be secured to member 51 by screws 74 or otherwise, as at 74a.

Head 21 may be mounted upon base 210 in a conventional manner, the said head being provided with a conventional activating wheel 21d for shaft 32, the wheel 21d being provided with a conventional continuous belt 21a.

The device operates as follows:

When it is desired toroot simulated hair into the scalp of a dolls head, the head is placed upon the needle plate 23 in such manner, that one part of it will extend downwardly alongside needle plate 23, and the other part will lie alongside needle 24 and needle bar 25, the part actually in work resting upon the horizontal part of needle plate 23. In its inoperative position, the vertically reciproeating needle will be down and the presser foot 22 will be down (see FIGURE 1). When the machine is activated in the conventional manner, the needle will reciprocate upwardly and the presser foot will remain down. Member 51 of presser foot 22 is provided with a slot 52 through which the needle reciprocates. During its upward stroke, the hooked end 26 of needle 24 will penetrate the work piece 76. Presser foot 22 will advance upwardly, releasing the work piece, and the needle will move backward, carrying the work piece with it. Thereupon the needle reciprocates downwardly and the presser foot goes down to hold the work piece; thence the needle goes forward and the pattern starts again.

Simultaneously with the reciprocatory movement of the needle and the presser foot, the following occurs: Activation of shaft 32 causes sprocket 35 which is mounted thereon, to rotate. Rotation of sprocket 35 will cause sprocket 38, which is connected thereto by chain 40, to rotate. Rotative movement of sprocket 38 causes the rotation of the eccentric 63 which is superimposed thereon, moving the eccentric arm 64 forward and backward. This causes bar 6i! to oscillate forward and backward (see FIGURES l and 2). As bar 69' below fulcrum point 39, moves away from the needle 24, feeder 29 will move away from the needle. When the needle 24 goes backward, feeder 29 will advance toward the needle. When the needle 24 reciprocates downwardly, its hooked end passes through opening 59 in hair-containing feeder 29 and engages and removes successive quantities of strands of simulated hair 75 from the feeder and draws them through the work piece 76 (FIGURE 7).

The size of sprocket 37 in relation to sprockets 35, 36 and 38 is such, that sprockets 35, 36 and 38 will rotate four times to each complete revolution of sprocket 37. The sprockets are so synchronized that, whenever the needle reciprocates downwardly in its backward position, the finger 72 of one of the arms 71 will contact the loose ends of hair carried by the needle and wipe them out of the path of the vertically reciprocating needle.

Many modifications are apparent and others will become apparent through use. For instance, there is shown and described a ratio of 4 to 1 between sprocket 37 and the other sprockets, since the wiper is illustrated as having four arms. The ratio would obviously change if the number of arms in the wiper were to change, thus a ratio of 3 to 1 would be required if there were three arms, a ratio of 5 to l for five arms etc. Another obvious expedient would be the use of direct gearing instead of the use of sprockets as shown. The mounting of the driving sprockets is optional in various locations on the shaft or related shafts of the machine.

Thus there has been shown and described a mechanism for feeding hair to the needle of a sewing machine continuously and in equal quantities in the preferred form of its embodiment. It is to be understood that this disclosure is to be regarded as descriptive and illustrative only of the best known form of its embodiment and not as restrictive or limitative to the exact details shown, applicant reserving the right to make such changes in the construction of his invention as may come within the scope of the appended claims without thereby departing either from the spirit or the scope of the present invention.

Having thus described the invention, what is claimed as new and desired to secure by Letters Patent, is:

l. The method of chain-stitching strands of simulated hair to the interior of a dolls scalp which comprises the steps of vertically reciprocating the hooked end of a needle into, through and out of a dolls scalp, advancing the needle past a hair-containing feeder, causing the needle to engage strands of hair on the feeder and to draw the hair downwardly from the feeder through the scalp midway the length or" the strands of hair, chainstitching the hair to the interior of the scalp, and by mechanical means brushing the free ends of chain-stitched hair out of the path of the reciprocating needle.

2. The process of stitching strands of simulated hair to the interior of a dolls scalp which comprises the steps of vertically reciprocating the hooked end of a needle into, through and out of a dolls scalp, advancing the needle past a hair-containing feeder, causing the needle to engage strands of hair on the feeder and to draw the hair downwardly from the feeder through the scalp, stitching the hair to the interior of the scalp and by mechanical means brushing aside the free ends of stitched hair out of the path of the reciprocating needle.

3. The method of stitching strands of simulated hair to the underside of a workpiece which comprises the steps of vertically reciprocating the hooked end of a needle into, through and out of a workpiece, advancing the needle past a source of supply of simulated hair, causing the needle to engage strands of hair from said source of supply and to draw said strands of hair through said workpiece, stitching said hair to the underside of said workpiece and by mechanical means brushing aside and holding down the free ends of stitched hair out of the path of the reciprocating needle.

4. In a machine for rooting hair into a dolls head, said machine having a vertical post for supporting said dolls head, said post having a vertical passage extending therethrough, a vertically reciprocable needle movable through said passage in said post, and means for moving said dolls head in a predetermined direction relative to said post; a presser foot including a bar movable to and from a position in which said bar is adapted to engage said dolls head for holding it against said post and from and to a position in which said bar is spaced from said dolls head to permit movement thereof relative to said post, means for moving said bar to and from said two positions, said bar being provided with a slot to permit passage of said needle therethrough, said slot extending in the direction of movement of said dolls head to the edge thereof to permit movement of the free ends of the hair out of the path of the needle.

5. In a machine for rooting hair into a dolls head, said machine having an upwardly extending vertical post for supporting said dolls head, said post having a vertical passage extending therethrough, a vertically reciprocable needle movable upwardly and downwardly through said passage in said post, and means for moving said dolls head in a predetermined direction relative to said post; a presser foot including a horizontal bar disposed above said post, said bar being movable to and from a lower position in which said bar is adapted to engage said dolls head for holding it against said post and from and to a raised position in which said bar is spaced from said dolls head to permit movement thereof relative to said post, means for moving said bar to and from said two positions, said bar being provided with a slot to permit passage of said needle therethrough, said slot extending in the direction of movement of said dolls head to the edge thereof.

6. The method of chain-stitching simulated hair to the interior of the scalp of a dolls head, comprising the steps of moving the hooked end of a needle from the inside,

of said head, through said scalp to the outside of said head, causing said hooked end to grasp a strand of hair while said hooked end is outside of said head, moving said hooked end together with the grasped portion of said strand in the reverse direction through said scalp into the interior of said head, chain-stitching said strand at the interior of said head, and moving the portion of said strand on the outside of said scalp out of the path of said needle.

7. The method of chain-stitching strands of simulated hair to the interior of a dolls scalp, said method comprising the steps of: vertically moving the hooked end of a needle into, through and out of a dolls scalp; advancing the needle past a hair containing feeder; causing the needle to engage a strand of hair supported by the feeder; and drawing the hair downwardly from the feeder through the scalp; chain-stitching the hair to the interior of the scalp; and by mechanical means brushing the free ends or chain-stitched hair extending above the scalp out of the path of the moving needle.

8. The method of stitching strands of simulated hair to a workpiece, said method comprising the steps of: vertically moving the hooked end of a needle into, through, and out of a workpiece in one direction; advancing the needle past a source of supply of simulated hair having free ends; causing the needle to engage hair from said source of supply; drawing the engaged hair through said workpiece in the other direction; stitching the hair drawn through the workpiece to the underside thereof; and by mechanical means brushing aside the free ends of the stitched hair exposed above the workpiece out of the path of the moving needle.

References Cited in the file of this patent UNITED STATES PATENTS 1,090,198 Butler Mar. 17, 1914 2,600,597 Winberg June 17, 1952 2,636,460 Seiderman Apr. 28, 1953 2,637,289 Grant et al. May 5, 1953 2,667,879 Mann et al. Feb. 2, 1954 2,670,570 Gnaizda Mar. 2, 1954 2,686,305 Hall Aug. 10, 1954 2,687,703 Shotsky Aug. 31, 1954 2,698,019 Sotzky Dec. 28, 1954 FOREIGN PATENTS 17,013 Great Britain 1910

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