US2638067A

US2638067A - Sewing machine attachment

Info

Publication number: US2638067A
Application number: US790476A
Authority: US
Inventors: Jr Robert Toombs Cozart
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-12-09
Filing date: 1947-12-09
Publication date: 1953-05-12
Anticipated expiration: 1970-05-12

Description

y 1953 R. T. cozART, JR 2,638,067

SEWING MACHINE ATTACHMENT Filed Dec. 9, 1947 5 Sheets-Sheet 1 IN VE N TOR ROBERT T, C m P JR 0mm 2 m, o6 rwan+dmnnnu 2; as? a: arrow/2Y8 May 12, 1953 R. T. COZART, JR ,0

SEWING MACHINE ATTACHMENT Filed Dec. 9, 1947 3 Sheets-Sheet 2 /NVENTOR POBERT T COZHRT, J/a.

29mm, 55 2231:- Rafi/rum 4- dmn/mu HTTORNE Y5 y 12, 95 R. T. COZART, JR

SEWING MACHINE ATTACHMENT 3 Sheets-Sheet 5 Filed Dec. 9, 1947 awe/M01; ROBERT 7f COZHRZ JR:

$21 dr/mmaq, feepnz, Roman zflmww HTTOENEYS Patented May 12, 1953 UNITED STATES PATENT OFFICE 2,638,067 SEWING MACHINE ATTACHMENT Robert Toombs cozart, Jr.-,- Goldsboro; N. o. ApplicationDecelnber 9, 1947, Serial No.790,476

7 Claims. 1

This invention relates to an attachment for sewing machines and more specifically to an attachment to aid in the sewing of elastic tape in waist bands of garments.

The usual procedure in sewing elastic tapes waist bands is for the operator of a sewing machine to hold the material and the elastic tape together in a stretched condition and sew the tape and the material in relatively short sections. The sewing operation is frequently interrupted as the operator changes her grip on the garment to sew the tape completely around the waist band. The frequent interruptions make it extremely diiiil cult to form a straight seam around the garment. Another disadvantage is that the oontinualstretching or the material and the elastic tape causes considerable operator fatigue. Moreover itis not possible to' maintain the elastic in a uniformly stretched condition when ashort section of the waist band is sewed at one time.

Eilorts heretofore made to overcome the objections to the operator stretching a series of short sections of the waist band and holding the material in the stretched condition while the elastic tape is sewed to the material have generally required a special sewing machine. Because of the numerous general purpose machines now in use and their long period of satisfactory use, it is desirable to provide" an attachment'which will'aid in the sewing of elastic bands to garments which maybe installed" on existing general purpose sewing machines.

It is an object of this invention top'rovide an attachment for a sewing machineand a method I of constructing waist bands which will greatly increase therateat which an operator can form waist bands" containing elastic tape on' garments. Another object or" this invention is to provide a method and apparatus for formingwaistbands which will greatly lessen operator fatigue.

Still another object of this invention is to provide an attachment for running tape in a waist band which may be installed on; all general purpose domestic or industrial machines" com monly in use.

A further object of this lnvention is to provide an attachment which Willa-id in the, construction of elastic waist hands in which theelasticj tape is under a uniform hand is stretched.

Still anotherflobjectis to provide an attach ment which" willrallow the sewing of straight seams as'the elasticytape issecur'ed in the waist band of a garment.

tension when the waist With these and other objects in mind which will become apparent in the detailed description of the invention following, this invention resides in an 'elcngated; arm extending substantially parallel tofthe line of feed of a sewing machine and her protruding from the ends of the arm substan alivfiperpendicular thereto. The elastic tape any. garment in which the waist band is to be ;..tructed is stretched over the horns which he i 'je material under a uniform tension in position ior feeding to the sewing. machine. This inventio further contemplates a new method or r g a waist band.

In the drawings:

Figure l is a perspective view oi" a sewing machine on which the attachment of this inve'ntion has been installed.

Figure 2 is an end'. perspective view of the sewing machine illustrated in Figure l.

/ Figure 3 is a detailed perspective view of the feed plate, presser bar and presser foot of the sewing'machine on which a guard forming part of this invention has been installed.

Figure 4' is a detailed plan" view of the sewing machine attachmentillustrated in. Figure 1.

Figure 5 is a plan View partially in. section of a modification of an eleinentioi this invention.

Figure sis a section uses silient cons uc ion of the attachment.

Figure is sectional view along the line 1-? in Figure 4.

Figure8'is a vertical sectional view taken along showing the first step in themethod of'inserture 11.

pleted waist band prepared according to this ing the tape according'to'this invention;

Figure 11 is alsoa perspective view somewhat diagrammatic in nature showing in the formation of the waist band.

Figure l2is a perspective viewillustrating the final step'in the formation of the waist band according in this invention.

Figure 13is acrosssectional view of the waist stage illustrated in Fi band structure at the 'Figurele is a crosssectional view of the coma sectionaluview, along the; gur'e l, illustrating the rediagrammatic perspective view a further step table and on which a housing l is mounted. A

gooseneck 5 extends from one side of the upper end of housing 4 and joins a head 6 in which is located the mechanism for actuating the needle I. A fly wheel 8 is provided at the upper end of the housing 4 on the side opposite the gooseneck for imparting a uniform rate of movement to the machine. A presser bar 9 extends from the lower end of head 6 and supports a presser foot :9 which engages the feed mechanism H in the work plate 12 of the machine. The above mentioned elements of the machine are conventional parts of the ordinary sewing machines and do not form a part of this invention.

A bracket [3 is secured to the base plate 3 of the machine below the head 6 near the work plate i 2. Bracket [3 serves as a mounting for an arm 14 extending substantially parallel to the line of feed of the sewing machine. Horns l5 and I6 extend from the rear and forward ends of the arm M, respectively, toward the line of feed of the machine for the reception of the garment in which the waist band is to be constructed.

Referring to Figure 4, bracket i3 is shown attached to base plate 3 by a pair of screws I! and 5;

over arm I4 to hold it rigidly in place and are provided with screws 22 and 23 to allow them to be tightened,

In the preferred form of the attachment illustrated in Figure 4, arm 14 consists of a central sleeve portion 24 which is clamped in bracket i3 ;t-'

and is of tubular construction at the

end sections

25 and 26 for the reception of

rods

21 and 23, respectively. Rod 21 is drilled and tapped at 29 for the reception of a bolt 30. Bolt 30 passes through a slot 3|, similar to the slot 35, in the section 25 of sleeve 24 and locks against the sleeve to hold rod 21' firmly in position. By loosening bolt 30 rod 21 may be slid to the de sired position and then looked firmly in place by tightening the bolt. For convenience the section 25 of the sleeve may be calibrated as indicated at 32 to indicate the size of the garment for which the attachment is set.

Ordinarily section 26 and rod 28 will extend considerably farther towards the rear of the sewing machine than section 25 and rod 21 extend towards the front. This construction allows the operator of the machine conveniently to work close to the needle of the machine without interference by the horn Hi. It is preferred that the adjustable and calibrated features provided by bolt and calibrations 32 be on the section of the arm extending towards the front of the machine tofacilitate adjustment of the attachment.

Rod 28 is drilled and tapped at 33 for the reception of a pin 34 which extends from the surface of the rod through a slot 35 in the sleeve 24. Pin 34 bears against the ends 3% and 37 of the slot 35 to limit the movement of rod 28 relative to the sleeve. A plug 33 is inserted in the section 25 of the sleeve between the end of the rod 28 and the bracket 13. The movement of plug 38 towards the center of the sleeve is prohibited by a pin 39 passing through the sleeve. Between the outer end of plug 38 and the inner end of rod 28 is a compressed helical spring 40 Which continually urges rod 28 outward. When the attachment is not in use spring 40 will force rod 28 to the position indicated in Figure 6 in which the pin 34 bears against the outer end 36 of slot 35. When a garment is in place over the horns l5 and i6, spring 48 is slightly compressed, thereby holding the garment in a stretched condition.

Horns i5 and. it extend from the ends of the

rods

21 and 23 toward the line of feed of the sewing machine. The garment to which the waist band is to be attached fits over the horns and is held thereon in. a stretched condition. The horns should be long enough to extend beyond the line of the feed of the machine to allow the garment to be supported on the horns and still move in a straight line from the front horn 16, past the needle, to the rear horn 15 as the tape is sewed to the garment. Ordinarily there will be atendency for the garment to slide off the end of the horns because the upper run of the garment is held outside of the needle I of the machine. The horns are, therefore, preferably constructed at a. slightly obtuse angle with the arm M as shown in Figure 15. The exact angle required to hold the garment on the horns l5 and I6 is a matter of experiment. Horns l5 and It are also equipped with shoulders 41 and 42 and knobs 43 to hold the garment in the proper position on the horns.

A modification of the horns l5 and I8 is shown in Figure 5 of the drawings. In this modification the horns are formed by a shaft 44 of re duced diameter on which a washer 45 rotatably fits. A sleeve 46 is rotatably mounted on the shaft 44. A second washer 41 is installed at the outer end of the shaft 44 and the sleeve 46. The end of shaft 44 is drilled and tapped for the reception of a screw 43' which holds washer 4'! in place. The modification of the invention illustrated in Figure 5 provides an attachment with freely rotating horns. This structure will facilitate moving the garment as the waist band is being constructed. In certain instances it may be desirable to insert needle bearings between the sleeve 46 and the shaft 44, or in some instances, sleeve 46 may be motor driven.

Referring to Figure 3, a guard 49 is attached to the presser bar 9 by a screw 50. Guard 49 serves as a shield around the needle to prevent it from becoming entangled with the upper run of a loop of the garment as the waist band is attached on the lower run. In many instances it will be desirable to have the shield somewhat bell-shaped to present a concave outer surface urging the upper run of the garment to which the waist band is being attached upward to hold it clear of the lower run.

The operation of the attachment of this invention may best be understood by referring to Figures 10, 11 and 12 in which the apparatus of this invention is schematically illustrated. The arm [4 i adjusted to locate the horns l5 and IS the proper distance apart to hold a loop of the garment in a stretched condition. Anelastic tape tightness with which the garment is to'fit. Tape 5iv is stretched over the horns l5 and |6 asindisated inl igure l; Theedge 52 0f thegarment 53 in. which the waist bandis to be installed is slid over the horns until edge 52 extends: past the outer edge 540i the tape Edge 52. of the garmentis foldedover the outer edge 56 oi the tape 5| along the lower run 55. The upper run 56 of the endless tapeand 51 of the garment 53 are folded back toward the ends of the horns and engage the outer surface of guard 49 surrounding the needle I of the sewing machine. The machine is started and the edge 52 is stitched at 59. tothe lower run of the tape. The: operator guides the lower run of the tape with the edge 5210f the garment into the stitching mechanism. In most cases the feeding mechanism of the macliinewill move the earment over the horns to allow the machine to operate continuously until the tape is stitched to. the garment its full length. In any event, the operator has one hand free to help feed the materialto the machine. Thestitchingsfis hold the material of the garment securely against both faces of v the tape.

The garment and the tape are removed from the. horns after the. stitching at 59' is completed over the full length of the tape. The edge of the garment. and the tape. are now reversed by folding. the. garment. inwardly over the inner edge 6% of the tape which completely encases it with the material of the garment '53. The garment is now replaced over the horns I5 and i6 and the upper run. of the tape and material of the garment are folded back along the outer surface of the guard 49, and a second row of stitches 8| is run adjacent the line of stitches 59. Stitches 61 completely close the waist band with the elastic secured therein in a uniformly stretched condition.

The tape running attachmentherein described facilitates the construction of Waist bands having an elastic tape under. a uniform tension therein. The attachmenteliminates' the necessity of the operator making the garments holding the elastic tape in a stretched condition as the" elastic is stitched to the garment. Since the operator has both hands free to guide the materialas' it, passes the needle of the sewing machine, the workmanship on the garments is improved. Moreover, the reduced fatigue of the operator results in an important increase in the rate atwhich they can construct the waist bands.

The attachment herein described may be installed on any of the conventional, domestic and industrial sewing machines of the general purpose type wherein the base plate is inset in the table and its upper surface lies substantially yfiush with the surface of the table. By stitching along the lower run of the loop of material, the

necessity of a special machineallowing thelower loop of the garment topass under the base of the machine isobviated.

vA novel method of constructing a Waist band having a tape stitched therein has been described which requires a minimum of steps for the formation of the band. The waist band structure herein described completely encloses the tape with the materialof the garment to form a highly satisfactory garment. The reducwithin the sleeve tioninqthe steps required for: the formation-ct the waist band increases the rate at which an operator isable to producezthe bands.

While the preferred modification of this inven tion has been described in detailrit' iscto be un derstood that the: concept of theainvention istnot limited to those detailsglvbut 'i-alls witliin; the scope of the appcndedclaimsi I claim: 1-. A tape running attachment for sewing machine comprising an arm :supported above; the: base of the machine parallelto the line of. feed of the machine; said arm comprising a. central:

sleeve, a first rod and a second: rod slldablewin said central sleeve and: extending. fromxopposit'e" ends thereof, a slot in thecentral sleeve-adjacent the first. rod, a bolt screwed into the first rod extending" through: the. slot and engagingthe sleeve to lock thefirstrodinthe desired position, a second slot in the central sleeve-addacent the" second rod,.a pin attachedtto thessecond -rod exitending through: tl'u-rsecond. slot, resilient means within the sleeve urging the second rod outwardlytowards'the end of thesleeve,said resilientmeans including, a spring compressed: between theend.

of the second rod and atstop within the sleeve, the pin engagingthe end of the" second slot-to limit. the movement of: the. second. rod, and! a horn extending from eachen'dof. the arm bcyondthe line of feed of themachinel 2. A tape running attachment-for asewin'g machine comprising a bracket attached to the base of the machine. under the head of the-machine,

an arm supported in the bracket parallel tothe" line of feed of the machine, saidarmcomprisi-ng a central sleeve, a firstrod' and asecondrod-slidable in said central sleeve andextending from opposite'ends thereof, e slot inthe central? sleeve adjacent the first rod; a bolt screwed. int-"o the rod extending through the slot and engaging the sleeve to lock the-first rodinthe desired posi tion, a second slot in the central sleeve adjacent a pin attached to the second red the second rod, extending through thesecond slot, resilient means the pin engaging theend of the" second" slotto limit the movement of the second rod, anda horn extending from each end o'f-the armlo'eyond the line of feed of the machine, ,and mean'shdjustabl attaching the'bracket to the, base or: the machine to allow adjustment-oi the bracket in a directionperpendicular to the'line ojv fe ed oi the machine.

3. In a sewing machine having a-table and a base plate set therein and substantially flush therewith, a tape running attachment comprising an arm parallel to theline of feed of the machine secured above the base of the machine, a horn extending substantially horizontally from each end of the arm beyond the line of feed to receive a stretch of a garment and tape and hold it in an extendedposition in the line of feed, said horn extending at an obtuse angle from the arm,

urging the second r'o'd outwardly arm toward the line of feed and substantially parallel with the base plate, said horns adapted to hold a loop of the material and an endless band of tape in an extended condition thereover in said line of feed, a guard surrounding at least one side of the needle of the machine to engage the upper stretches of said loop of material and band of tape and hold the same out of the path of movement of the needle while the needle is stitching the lower stretches of tape and material together, and said horns forming obtuse angles with the arm and diverging from the arm to counteract the tendency of movement of the lower stretch of the material and tape from the line of feed occasioned by the engagement of the upper stretch with the guard.

5. A sewing machine attachment for sewing an endless tape to a loop of material comprising an elongated member formed of a central sleeve and a rod slidable therein and extending from one end thereof, a horn carried by the central sleeve and extending laterally therefrom, a second horn carried by the rod at the end thereof projecting from the sleeve, said horns lying substantially in thesame plane and adapted to be inserted into the loop of material and tape, spring means intel-posed between said sleeve and rod and yieldingly urging the rod outwardly toward the end of the sleeve to maintain said horns in spaced relation and to hold the loop of material and tape in a stretched condition while sewing the tape to the material, and means for attaching said elongated member to the sewing machine with the central sleeve thereof extending parallel to the line of feed of the machine and said horns intersecting the plane containing the needle of the machine and the line of feed of the machine.

6. A sewing machine attachment for sewing an endl ss tape to a loop of material comprising an elongated member formed of a central sleeve and a rod slidable therein and extending from one end thereof, a horn carried by the central sleeve and extending laterally therefrom, a second horn carried by the rod at the end thereof projecting from the sleeve, said horns lying substantially in the same plane and adapted to be inserted into the loop of material and tape, spring means interposed between said sleeve and rod and yieldingly urging the rod outwardly toward the end of the sleeve to maintain said home in spaced relation and to hold the loop of material and tape in a stretched condition while sewin the tape to the material, and means for attaching said elongated member to the sewing machine with the central sleeve thereof extending :parallel to the line of feed of the machine and said horns intersecting the plane containing the needle of the machine and the line of feed of the machine, and a stationary guard spaced about the needle to hold the upper stretch of said loop of material and tape away from the needle as the lower run of tape is stitched to the lower run of the material.

'7. A sewing machine attachment for sewing an endless tape to a loop of material comprising an elongated member formed of a central sleeve and a rod slidable therein and extending from one end thereof, an elongated roller rotatably journalled on the central sleeve and extending laterally therefrom, a second elongated roller rotatably journalled. on the rod at the end thereof pro jecting from the sleeve and extending laterally therefrom, the rotational axes of said rollers lying substantially in the same plane, said rollers adapted to be inserted into the loop of material and tape, spring means interposed between said sleeve and rod and yieldingly urging the rod outwardly toward the end of the sleeve to maintain said rollers in spaced relation and to hold the loop of material and tape in a stretched condition while sewing the tape of the material, and means for attaching said elongated member to the sewing machine with the central sleeve thereof extending parallel to the line of feed of the machine and said rollers intersecting the plane containing the needle of the machine and the line of feed of the machine.

ROBERT TOOMBS COZART, JR.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,231,542 Weis June 26, 1917 1,453,506 Kershner May 1, 1923 1,857,058 Maier May 3, 1932 2,074,929 Martin Mar. 23, 1937 2,175,030 Rosenfielcl Oct. 3, 1939