US1253614A - Sewing-machine. - Google Patents

Description

R. L. LYONS, H. W MORRIS & C. NIELSEN.

SEWING MACHINE.

, APPLICATION FILED MAR. 16. 19x4.

fivvfnions. R

W WM

entrain snares rarnnr cannon ROBERT L. LYONS, OF WALTI-IAM, HAROLD W. MORRIS, 0F ROXBURY, AND CARL I. NIELSEN, -OF ARLINGTON, MASSACHUSETTS, ASSIGNQRS TO- FREDERICK OSANN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK;

SEWING-MACHINE.

iasaeia.

Specification of Letters Patent.

Patented Jan. 15, itfi i Application filed March 16,1914. Serial No. 824,873.

To all whom} it may concern. 7

Be it known that we, ROBERT L. LYoNs, of WValtham, in the county of Middlesex, I-TAROLD V. Momns, of Roxbury, in the county of Suffolk, and CARL I. NIELSEN, of Arlington, in said county of Middlesex, all in the State of Massachusetts, have invented certain new and useful Improvements in Sewing-Machines, of'wliich the following is a specification, reference being had to the accompanying drawings, forming part thereof: 9

This invention has reference to improvements in sewing machines and particularly to such machines as are adapted to attach by sewing stitches tags or other flat devices to a fabric. V

The object of theinvention is to so construct asewing machine, particularly a singlethread sewing machine, that a tag or other flat article may be attached to afabric by a group of stitches, that the relative movement of the work withrespect to the stitch forming devices may be arrested during the's'ewingof one or more tying stitches and that the sewing threadmay b'e strained to break saidthread.

Other objects of the invention are to facilitate the operation of the various parts of the machine as, for instance,the release and return of the lifter plate to its normal position.

The'invention consistsin the novel means for" liftingthe work to strain the thread;

The invention also consists in such other novel features cinema-action andcombinations of parts as shall hereinafter be more rod from release movement.

fabric a having the tag 6 attached to said fabric by the sewing stitches c, c.

Fig. 6, represents adetail view of the camfor holding the thread clamp actuating Similar characters of reference"designate corresponding parts throughout;

WVe are awarethat buttons have beenattached to fabric bygroups of stitchesand that, after the formation of tying stitches, said button and its attached fabric has been lifted to strain and break the thread. In such operation the button has such stability that it is engaged by the arms of a button clamp and the lifting of the work to eflect the breaking of the thread is accomplished by the swinging upward of the arms of the button clamp. In carrying our present invention into practice the tagor flat article which is to be attached to the fabric has neither the shape nor the stability to be engaged by a lifting device adapted to apply sufiicient strain to effect the breaking of the sewing thread; The tag referred to herein is often of paper or of comparatively thin cloth and is therefore not adapt ed to resist any severe strain. e therefore find that it is desirable and often necessary to effect the straining of the thread by lifting the under fabric by means of a cloth plate against which said under fabric rests during the sewing operation. This preferred means of lifting the work to strain the thread usually requires the return of the'cloth plate to normal position, toreceive the work, beforethe presser foot is returned to its normalposition to bear on the work.

In order to morefully describe the new improvement reference isnow made to the drawing in which 10 represents the bed plate of a sewing machine having the standard 11 furnished with the arm 12 havingthe head 13 by whichhead 13 operatively sustains the needle bar 14 which, with-its The means for operating the needle mechanism and the looper mechanism may be of any known construction and does not necessarily form part of the present mvention.

The frame arm 12 has the thread tensions 16 and 17, the posts 18*and 19 and the in theother direction by'the slide "rod which 1s shdable 1n the guide 12 and has the pin members 23 and 2st. The lower end of said slide rod 22 is in position to be acted upon by the r1se25of cam'26 which latter is adapted to be rotated by the driv-v ing mechanism of the machine, in any known manner. and has a. cam or path 27 of any known shape to effect the vibration of the follower, 28, engagedjwith said cam, during a period in the rotation of said cam 26 and to arrest such vibration during another period in the rotation of-said cam26 as is-well known. 3 i T On the base plate 10 is movably'mounted a work holder having the post 29- and the forwardly extending member 30 which latter has the hinged cloth plate 31 extending forward to the path of the needle and having a slot which is in registry withslot of presser member 33 which latter has spurs at:

its under side and. is carried by arm 34 pivotally mounted on said post 29. Cloth plate 31 hasalso the guide 35 with which the for- 21rd end of the lifter arm 36 is slidably engaged, the rear end of this arm 36 being pivotally mounted on the post'37 which in.

turn is niountedon the bed plate 10.

In bearing'members 38, 39 carried respe'c tively by the arm 12 and head 13 is jour'naled. the shaft lO'havingthe arnreil whichiaian is adapted'to be swung by the actuation-of its connection 42 to effect the rocking of said shaft 10 and the swinging of its thread puller arms 4-3 and 44: the former of which, (43) is located back of the thread clamp (19 21) to pullthread T through the tensions 1 6 and 17 when the thread is clamped by said thread clamp to provide loose thread for the next sewing operation, after the thread has been releasedmby said thread clamp. Thread pullcrarm 4'4; is free on said shaft and has'the finger45 andzthe depending member dwhich latter has the? drawing spring 47, attached to arm 12, and tending constantly, to draw'this member 16 toward the machine arm 12 and to swing outward the upper end of said thread puller arm 44 to take up slack thread between. the, thread-clamp and the w0'rk. The outward sw ng ng of sa1d thread puller 414 under theaction of spring17 is limited by thestop' is fined onthemachme arm 12 and cooperating wlth the finger 15 of puller 4:41Vhll the Said pivoted arm 21 to the peripheral portion of said cam as 1 shown in Fig. 6 and issustained thereby to hold the thread clamp member2l in the closed position, In starting a new sewing operation the primary movement of the work holder causes the rear end of itslmem ber 34 to strike pin 21 of said rod 22 where'- bysaid rod is partially rotated and its pin 23 is released from the periphery of said cam 50 and is permitted, by thesha-pe of 'said' cam, to move downward thus releasing thread clamp member 21 from the closing action of rod 22 and permitting the spring of said member 21- to act to open 'thcthread clamp. V. I

Mounted on shaft 40 is thearnrfijl with.

which is pi votally connected the lifter, rod,

52 having the cam Y53 and, at or near its lower end, the engaging member 54-.QThis lifter 130C152 is drawn towardflthe machine arm-12 bythe spring 55 and said-arm 12, is provided with the cam 56 which inithe upward movement of rod 52 acts against cam 53 of said'rod and forces said rod-to-swing outward whereby the, member 51 thereofyiscaused to move outward, from the, position shown in Fig. 2, sufficiently to release the; lifter a m 36 whereby said arm '36 andlts vcloth plate 31 may fall back topositio'n on the bed'plate irrespective of the-position of the presser arm 34 which latter is raised by l-Vith parts in position shown inaFigi; 1

1 05 its connection 57 with the arm 58 Ofshaftifl. 1

it is necessary to raise the presser foot 33 in order to introduce the clothfor fabric the cloth plate 31. This is preferablylac- 'complished by manuallyfactuating thcfcon ,nection 41-2 of .arm 11 whereby shaft 40Ris partiallyrotated and arm "58 is swun :toj draw up said presser foot 33, by means ofthe 7 connection 57 At the same. time the block or member 5 1; engages and. draws up the lifter arm 36-and the cloth plate 31 isthus raised until-the a cam i 53 ofrod '52 rides agamst cam 56 and 1s, by sa dicamq56,

forced outward 'sufliciently toq-rdisengage member 54 from the lifter arm 136 tlius;,per-

mitting said arm 36 and plate 31 tofdrop,

back to a position where plate 31 is spaced from presser foot.33.

The material a with its tag I) is nowiin sorted between plate '31; and, presser foot and the connection 42 18 released to pernnt the retractive rotation of shaft 40- and the downward movement of the presser foot; 33

lee

whereby the material to and tag Z) are en- 'gaged bvt'he spurs on said presser foot and clothplate as is indicated in Fig. 1.

1th the material a and tag Z) in position, asqust above descrlbed, the machine 1s operated and a group of stitches is sewn through a and b and at or about the completion of said group of stitches therelative movementbetweenthe work and the needle is arrested, by cam 26, in the usual manner and one or more tying stitches is formed.

The automatic stopping of the machine is timed with relationjtothe formation of said tying stitch or stitches an d, preceding said stopping, -the rise *of said cam 26 acts on the slide rod'22 to raise said rod and to thereby move thread clamp member 21 against the action of its spring to the closed position whereby thread T is clamped or engaged between members 21 and 19 so that the forward movement of the thread is re sisted. 1

Connection 12 is now actuated or effected to rock or partiallv rotate shaft 10 and as a result of said partial rotation several operations occur, the sequence of which occurrence depends somewhat upon the relative positions and dimensions of the members carried by or actuated by the rotative movement of said shaft 40. Cam acts on pin 23 of rod 22 and effects the swinging of said pin on to the periphery of said cam 50 whereby said rod 22 is held in position to resist the opening movement of thread clamp member 21. Thread puller arm 43 is swung to draw thread through the tensions 16 and 17 or through one of said tensions if one only be used. Thread puller arm actuator 49 is moved vor swung outward to permit spring +17 to swing thread puller arm 44 to take up slack thread between the thread clamp (19, 21) and the tying stitch at the work. Arm 58 is swung to draw upward presser foot arm 34 by means of the connection 57. Arm 51 is swung to draw up rod 52 which acts, through its member 5 1 on the lifter arm 36 to effect the lifting of the cloth plate 31 whereby the work is lifted and a strain is put upon the thread T to break said thread, the break occurring at the tying stitch.

Before the upward movement of rod 52 is completed its cam 53 rides against cam 56 and cam 53 and its rod 52 is caused to swing outward whereby the member 54 of said rod 52 is disengaged from lifter rod 36 and said rod and its cloth plate 31 are caused to move downward under gravity or by the assistance of the spring of said rod 36. By thus returning cloth plate 31 to normal position said plate 31 is spaced from presser foot 33 so that work may readily be placed between these parts.

When connection 12 is permitted to move upward shaft 410 is retractively rocked 1 whereby thread puller arm 43 is swung backward out of the way of the thread. Actuator arm 19 actsto effect the backward swinging ofthread puller arm 1-1. Arm 58 in its movement permits the downward movement of presser foot arm 31, and arm 51 permits rod 52 to move downward until its member-5i rides against lifter ar-111 36 and thus become engaged beneath said arm 36as indicated in Fig. 3, thisengaging movement, laterally, of rod 52 and its member resulting from the action of spring I Nhen the 'machine is again started the rear portion of presser foot arm 3%, in making its first vibratory movement, strikes pin 2% of rod 22 and causes said pin to swing whereby rod 22 is partially rotated to bring its pin 22 into the position shown in Fig. 1 where said pin 23 may be received in the groove of cam 50 to permit the downward movement of said rod 22 and the opening movement of thread clamp member 21 under action of its spring.

It is not our intention hereby to limit our invention to the specific features of construction herein shown or to the relative operation of some of the parts but only as herein claimed.

Having thus described our invention we claim as new and desire to secure by Letters Patent:

1. A sewing machine comprising stitch forming means to form a group of stitches and a tying stitch and including a work holder for effecting relative movement between the work and the needle, said work holder having a presser foot and a cloth sustaining plate, means adapted to be operated to resist the movement of the thread, and means for operating said cloth plate to move the work and thus to break the thread.

2. A sewing machine comprising stitch forming means and a work holder cooperating to form a group of stitches and a tying stitch, said work holder having a cloth sustaining member mounted on said work holder and movable relative to such holder, means for moving said member, and means for resisting the feeding movement of the thread at times to break the thread.

3. A sewing machine comprising stitch forming means and a work holder cooperating to form a group of stitches and a tying stitch, said work holder having a member engaged beneath the work for moving the work, means for operating said member to lift the work, a thread clamp, means for taking up the slack thread between said clamp and the stitch forming means, and means for o )erating said thread clamp and take up whereby thread may be broken.

4. A sewing machine comprising a work holder having a presser foot and a cloth sustaining member mounted for independent movement, means for moving said presser mechanism for moving both said presser foot and sustaining member in one direction approximately simultaneously and for permit- 1 ting the return of the sustaining member to its normal, position lndependently of the presser foot.

6. A sewing machine comprising cooperating means for forming a group of stitches and a tying stitch and including a member movable independently of the presser foot in a direction to draw the thread, means 10- Gopies of this patent may be obtained for catcd-above the stitch forming devices for resisting the movement of-the thread, and meaiis for moving said member to strain and break the thread.

7. A sewing machine comprising a work holder having a presser foot and a work carrying member both pivotally mounted for relative upward movement, a lifter rod pivotally mounted on a member independent of said work holder and releasably engaged with said work carrying member, means for moving upward said'lifter rod, and means for moving upward said-presser foot.

ROBERT L. LYONS.

HAROLD W. MORRIS. CARL I. NIELSEN.

\Vitnesses HENRY J. MILLER, v ESTHER ,C. MU PHY.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

Images