US1325034A

US1325034A - Trimming-sttppi

Info

Publication number: US1325034A
Authority: US
Publication date: 1919-12-16
Anticipated expiration: 1936-12-16

Description

I W. MYERS. TRIMMING SUPPLY CONTROLLING DEVICE FOR EMBROIDERING MACHINES.

APPLICATION FILED APR. 9. 191B.

1,325,034. Patented Dec. 16,1919.

11in I f 1 L 1 iiiilllil nlm i' w hi-m |111ml11mm1111111111111 III' In 11 /f a L i r 7m WITNESSES INVENTOR W, J Walierjkfyers,

ATTORNEY UNITED STATES PATENT OFFICE.

WALTER MYERS, or BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE SINGER MANUFAC- TUBING COMP.A,1\TY,A CORPORATION or N W JERSEY.

TRIMMING-SUPPLY-CONTROLLING DEVICE FOR EMBROIDERING-MACHINES. I

Specification of Letters Patent. Patented Dec. 16, 19 19.

Application filed April 9, 1918. Serial No. 227,442.

To all whom it may concern Be it known that I, WALTER MYERS, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Trimming- Supply-Controlling Devices for Embroidering-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improvement in sewing machines for embroidering, especially to those employed for sewing to a body-fabric ornamenting trimmings such as braids, tapes, edgings, ribbons and the like.

Sewing machines of this character ordinarily include stop-motion devices automatically operative to stop the machine at the completion of each stitch and with the needle out of the work, but which may be manually rendered ineffective during the formation of any desired number of stitches. Whenever the machine was stopped with the needle out of the material in machines employing a trimming unwinder bodily rotatable around the needle-bar, the spool or reel forming the trimming supply invariably overran itself, thereby loosening an undesirable quantity of improperly controlled trimming between the supply and the needle. This defect is not overcome by the provlsion of a constant tension on the trimming, for in certain classes of work it is undesirable to have any tension on the trimming durmg the period of stitch-formation.

The present invention has for its pr mary object to provide a construction obviating any tendency of the trimmmg supply to overrun itself upon the stopping of the machine, but to nevertheless properly control the trimming during the feeding action of the machine.

To the attainment of these ends there is embodied in the sewing machine a supplyreel for the trimming mounted for bodily rotating movement to accord with the direction of feed and including a trimming-supporting spindle adapted to rotate during the unwinding of the trimming. Mounted .torotate with the spindle is a checkingor click-disk having a notched periphery adapt-,

ed to be yieldingly engaged during the feeding of the material bya spring-pressed finger on one arm of a two-armed lever fulcrumed on a trimming-reel supporting bracket. The other, armof the leveris adapted to be acted upon by a cam-roller Carried by the needle-bar in such wise as to permit the spring to act:upon the lever to check the trimming when-the needle is out of the material, during which time the feeding of the fabric occurs Whenthe machine a is in operation and which is also the stopping position of the machine. During the 7 time the needle is in the material, the camroller acts upon the two-armed lever to release the .checking disk, a condition essential to certain classes of work.

In the accompanying drawings Figure l is a front side elevation, partly in section, of a sewing machine embodying the present improvement- Fig. 2 is a top-plan view of the trimming reel and its supporting bracket, with the trimming carrying spindle partly broken away. Fig, 3 is a fragmentary view of the checking disk and finger.

Referring to the drawings, the sewing ma- Mounted forvertical reciprocatory movements in the cylinder 9 is the needle-bar 10,

carrying the needle 11 and constrained in the usual manner to rotate with the cylinder. Secured to the needle-bar and slidingly mounted upon the cylinder is the peripherally grooved collar 12 embraced by the forked end of the arm'l3 projecting from the usual needle-bar'driver, vertically slidable'inways formed in the frame .5 and reciprocated in a well known manner from the driving shaft 6. Any well known form of looper mechanism may be employed to cooperate with the needle in the formation of stitches.

The cylinder 9 is adapted to be manually rotated to obtain the desireddirection of feed by means of a hand-crank :14 carried by a crank-arm 15 secured to a Crank-Shaft 16 journaled in a bearing provided in the bracket 17 suitably secured to the under side of the cloth-plate. The crank-shaft 16 through intermeshing gears actuates a shaft 18 which in a similar manner actuates a shaft 19, both of which shafts are journaled in the bracket 17. The shaftflt) at its rearward end, through inter-meshing gears, drives a vertical shaft 20, which in a similar manner actuates a horizontal shaft 21, journaled in the overhanging bracket-arm. The shaft 21 at its forward end carries a gearmember 22 in mesh with a gear-member 23 rotatably supported upon a stud-shaft 24 upon the frame 5. Mounted to rotate with the-gear-member 23 is a bevel-gear 25 in mesh with a similar gear 26 suitably secured upon the cylinder 9.

As usual in machines of this class, there is provided a stop-motion device adapted to automatically stop the machlne after the completion of each stitch unless manually prevented from operating. The stop-motion device disclosed in the accompanying drawings is of well known construction, the several parts thereof being designated by the reference character m and constructed substantially as shown and described for in stance in the United States patents to A. Bonn-as, No. 83,910, dated November 10, 1868 and to E. Cornely, No. 182,80at, dated October 3, 1876.

The feeding mechanism includes a feed ng foot 7 capable of being manually controlled under the action of the hand-crank 14 to feed the material in any desired direction in a single plane and as, for the purposes of this invention, any well known form of universal feeding mechanism such as is dlsclosed for instance in the United States patent to D. Noble, No. l,0i9,520, dated January 7, 1913, may be employed, it is deemed unnecessary to enter into a detailed description of the feeding mechanism partly disclosed in the accompanying drawings.

The upper end of the cylinder 9 is formed with a flange 27 to which is secured a supporting disk 28 carrying the trimming supply holder and the needle-thread holders and guides. To the disk 28 is suitably se-- cured a supporting bracket 29 carrylng a trimmingsupporting spindle 30 adapted to rotate with the trimming during the unwinding thereof. Secured to the spindle is a checking or click-disk 31 having a notched periphery adapted to be yieldingly engaged by a checking finger32 forming one arm of a lever fulcrumed upon the bracket 29 by means of a pivot-screw 33. This arm of the lever is acted upon by a spring 341 positioned in a socket in the bracket 29 and acting when permitted to cause the checking finger to engage the notched periphery of the checking disk. The other arm 35 of the lever is '65 adapted to be engaged by a roller '36 carried by a collar 3'? suitably secured to the upper end of the needle-bar. The inclination of the arm 35 relative to the needle-bar when the latter is at its upperposition is due to the action of the spring 3%. When the machine is stopped with the needle out of the material, the checking disk 31 is prevented from overrunning by the action of the finger 32. Further as the feed of the material occurs when the needle is out of the material, the trimming is properly controlled during the feeding action. When the needle-bar descends and penetrates the material, that is, during the return movement of the feeding member, the finger 32 is positively removed from contact with the disk, thereby freeing the latter from tension, a condition essential to certain classes of work during the formation of stitches. The trimming is led from its unwinder through either of the apertured ears, as 38, thence through the hollow cylinder 9 and'to the usual braidguide 39.

The supporting disk 28 further carries a spool-pin 10 for the needle-thread spool, a tension device 11 including a thread-controlling spring i2 and thread-guiding posts s3, 4% and The needle thread is led around the bracket 29, through the tension device &1, around the post 13, through an aperture in the end of the spring 12, thence through openings in the posts 4-1 and 45, respectively, through an aperture in the collar 37 and downwardly through the hollow needle-bar to the needle. This manner of leading the thread to the needle, permits the needle- "-ar, in its reciprocations, to pull off the necessary supply of thread and set the stitches.

Having thus set forth the nature of the invention, what-I claim herein is zr 1. In a sewing machine, in combination, stitch-forming mechanism including a reciprocable needle-bar, a needle carried by said needle-bar, a trimming supply-holder bodily rotatable around said needle-bar, and means brought into action when the operation of the machine is arrested for checking the trimming supply and to prevent overrunning of the same.

2. In a sewing machine, in combination, stitch-forming mechanism including a reciprocable needle-bar, a needle carried'by said needle-bar, a trimming supply-holder bodily rotatable around said needle-bar, a stop-motion device adapted to bring the machine to rest with the needle out of the material, means brought into action during the stopping of the machine to check the rotation of the trimming supply and prevent overrunning of the same, and means for releasing said trimming supply on the initial downstroke of the needle-bar of a succeeding stitching operation.

3. In a sewing machine, in combination, 1

stitch-forming mechanism including a reciprocable needle-bar, a needle carried by said needle-bar, feeding mechanism including a feeding member having fabric feeding and return movements, a trimming supply,

means for checking the supply against over- 7 running during the fabric feeding action of said feeding member, and means for releasing said trimming supply during the return movement of said feeding member.

4. In a sewing machine, in combination, stitch-forming mechanism including a reciprocable needle-bar, a needle carried by said needle-bar, a trimming supply, a stopmotion device adapted to bring the machine to rest with the needle out of the material, means brought into action during the stopping of the machine to check said trimming supply and prevent overrunning of the same, and means carried by said needle-bar for releasing said trimming supply.

5. In a sewing machine, the combination with stitch-forming mechanism including a reciprocable needle-bar, a needle carried by said needle-bar, of a trimming supplyholder including a rotatable trimming-supporting spindle, a checking disk rotatable with said spindle, and a checking finger adapted to yieldingly engage said disk and intermittently check the trimming supply during the operation of the machine.

6. In a sewing machine, the combination with stitch-forming mechanism including a reciprocable needle-bar, aneedle carried by said needle-bar, of a trimming supplyholder including a trimmingsupporting spindle, a checking disk rotatable with said spindle, a checking finger adapted to yieldingly engage said disk to check its rotation, and means carried by said needle-bar for releasing said checking finger.

7. In an embroidering machine, the com bination with stitch-forming mechanism including a vertically reciprocable and axially rotatable needle-bar, a needle carried by said needle-bar, and feeding mechanism adapted to feed a material being acted upon in any direction in a single plane, of a trimming supply-holder bodily rotatable to accord with the direction of feed, an axially rotatable trimming-supporting spindle, a checking disk rotatable with said spindle, a checking finger adapted to yieldingly engage said disk to check its rotation, and positive means for releasing said checking finger.

8. In an embroidering machine, the combination with stitch-forming mechanism including a vertically reciprocable needle-bar, a needle carried by said needle-bar, a cylinder upon which said needle-bar is adapted to reciprocate, feeding mechanism, and means for rotating said cylinder to change the direction of feed, of a trimming supplyholder supported by said cylinder and bodily rotatable around said needle-bar, a rotatable checking disk, a finger adapted to yieldingly engage said disk to check its rotation, and means for releasing said finger.

9. In an embroidering machine, the combination with stitch-forming mechanism including a vertically reciprocable needle-bar, a needle carried by said needle-bar, a cylinder in which said needle-bar is adapted to reciprocate, feeding mechanism, and means for rotating said cylinder to change the direction of feed, of a trimming supplyholder supported by said cylinder, a rotatable checking disk having a notched periphery, a finger adapted to yieldingly engage the notched periphery of said disk to check its rotation, and means carried by the needle-bar for releasing said finger.

In testimony whereof, I have signed my name to this specification.

WALTER 'MYERS.