US1288076A - Sewing-machine. - Google Patents

Description

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

SEWING MACHINE.

APPLICATION FILED FEB. 12. I912. RENEWED NOV. 30.1917.

Patented Dec. 17, 1918.

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

SEWING MACHINE.

APPLICATION FILED FEB. 12. I9I2- RENEWED NOV. 30,1917.

1,288,076., Patented Dec. 17,1918.

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. tion of OFFICE.

ROBERT L. LYONS, OF WALTHAM, HAROLD W. MORRIS, OF ROXIBU RY, AND CARL INGOLF NIELSEN, OF ARLINGTON, MASSACHUSETTS, ASSIGNORS TO FREDERICK OSANN COM- PANY, OF NEW YORK, N. Y.,

A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Dec. 17, 1918.

Application filed February 12, 1912, Serial No. 677,096. zt eneweii November 30, 1917. Serial No. 204,786.

To all whom it may concern:

Be it known that we, ROBERT L. LYoNs, of 'althain. in the county of Middlesex, HAR- OLD W. MORRIS, 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 oer-- tain new and useful Improvements in Sewing-Machines, of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.

This invention has reference to improvements in sewing machines and particularly to improvements in machines for sewing shank buttons to fabrics. One object of the invention is to so construct a button sewing machine that the placing of a shank button in position for sewing the same to fabric is facilitated.

Another object of the invention is to so construct a machine for sewing shank buttons to fabrics that the sewing thread may be knotted and broken or parted at a point between thebutton and the fabric towhich said button 1s sewn.

Another object of the invention is to improve the means for supporting the button and the fabric in their relative positions.

Other objects of the invention will appear from the following description.

The invention consists in the peculiar means for sustaining the button and the fabric.

The invention also consists in such other novel features of construction and combinaparts as shall hereinafter be more fully described and pointed out in the claims.

Figure 1, represents a side elevation, partly in section, of portions of the improved sewing machine.

Fig. 2, represents a sectional plan view of parts thereof taken on line 2-2 Fig. 1.

Fig. 3, represents an end view of portions of the same, partly in section.

Fig. 4, represents a sectional view taken on line 4-4 Fig. 1.

Fig. 5, represents a plan view of portions of the machine.

Fig. 6, represents a diagrammatical view illustrating approximately the relation of the stitch forming devices and work sustaining means at the completion of the sowing operation before the chain stitches are drawn tight.

Fig. 7, represents a plan sectional view of parts of the fabric support on line 7-7 Fig. 3, looking downward.

Similar numbers of reference designate corresponding parts throughout.

s shown in the drawings 10 indicates the base of the machine having the comlower, whereby the operation of said followercomprises a series of vibrations representing a series of stitches and a dwell representing a chain forming period. v

The follower 23 is mounted on the shaft 24 which is journaled in a vertical bearing of the post 25 mounted on said base 10. At its upper end shaft 24 has the grooved arm 26 in the slide member 27 of the clamping device 28 whereby the end of the two part connecting rod 29, pivotally connected with said clamping device 28, may be adjusted along said arm 26 to vary the throw of said rod, while the forward end of said rod 29 is pivotally engaged with the post 30 which has the clamp. 31 and is adjustably secured in the base of the standard 32 of the slide member 33 which is slidably mounted on the plate 10 of the bed 10 and has the fingers as 34 extending through an opening in said plate 10' and engaged between the collars 35 and 36 of the looper shaft 37 carrying the looper 38. The looper'shaft 37 is slidable and rotatable in bearings of the frame members 15 and 16 and its collar 35 has the pinion 39 whereby the looper shaft is driven by the pinion 18 of shaft 17 while the collar 36 of the looper shaft has the flange 40 which is engaged in a groove of the thread-moving plate 41 having the needle passage 42 and the cam without. effecting a relative movement of said folfollower 23, en-

slidably mounted in guides 43 at the under side of plate 10.

lVIounted on the base 10 is the head 44 having the lever 45 which is vibrated in any usual manner to effect the vibration of the needle bar 46 which is connected with said lever 45 by the link 47 p-ivotally connected with said lever and with the member 48 of said needle bar which latter is slidable in the sleeve 49 of the bar 50 and the latter is secured in the clamp 31 of the rod 80.

It will thus be seen that during the rotation of cam 21 its cam groove 22 will actuate follower 23 to effect the lateral vibration, through the connections therewith, of slide 33, the looper shaft 37 and looper 88, plate 41 and the needle bar 46 with its needle in unison while at the same time the needle bar and its needle and the looper will be operated to form stitches. When. however, the dwell in said cam groove 22 travels by said follower'23 no lateral vibratory movement of the needle and the looper will be effected but the stitch forming operation of the needle and the looper will be continued.

The lifter rod 51 is vertically slidable in guides of the head 44 and is pressed downward clamp 53 adjustable on said rod 51 which latter at its lower end has the laterally extending presser foot or plate 54 having the fingers 55 and 56 forming the means for engaging the upper edge of a button B. positioned as shown in the drawings, while the lower edge of said button is seated or engaged in the cavity 14 formed in the throat plate 12 adjacent the throat 13. On said rod 51 is adjustably secured the sleeve 57 having at its lower end the flange 58 which supports the swinging arm 59 of a fabric sustaining device which comprises the depending member 60 and the fabric sustaining plate 61 ance opening 62 so that, when this plate 61 is swung toward a button under operation the edges of this clearance 62 may support the fabric close to the button without obstructing the passage of the needle. Preferably the sleeve 57 is furnished with the spring 63 mounted between and 65 of said sleeve and having the end 63', Fig. 7, which engages the arm 59 and acts to swing said arm and its member 60 and fabric sustaining plate 61 in a direction to bring the free end of plate 61 toward the path of the needle while the swinging movement of said arm 59 is limited by the stop 58 of flange 58 which is positioned to interrupt shoulders of said arm as is shown in Fig. 7.

By reference to Fig. 3 it will be seen that by the release of screw 66 the sleeve 57 may be adjusted along rod 51 to adjust the plate 61 relative to arm 54 which defines the height of the upper edge of the button B when poby the spring 52 acting against the.

having, preferably, the clear-,

the collars 64' raeaore sitioned as shown in the drawings. Such adjustment of the plate 61 is for the purpose of adjusting the height of the material or fabric M relative to the center of the button or to its shank b. The manner of mounting plate 61, so that its free end having the clearance 62 may be swung away from the position shown in Fig. 2, in the direction indicated by the arrow, is for the purpose of clearin the wa for the placing of the button B beneath the fingers 55 and 56 of arm 54 with the lower edge of the button seated in the seat or cavity 14 of the throat plate 12. In such placin of the button 13 the plate 61 is first swung outward and then rod 51 with its arm 54 is moved sufficiently upward to permit of the insertion of button B beneath the said fingers 55 and 56.

The upward movement of rod 51 is accomplished by the finger 67 of shaft 68 which finger engages with the adjustable clamp 53 of said rod 51. Shaft 68 is journaled in bearings at the side of the head 44 and has the arm 69, the thread puller arms 70 and 71 and the lifter cam 72. Arm 69 is pivotally engaged by the rod 7 8 which is slidable in a guide of the base 10 and has the plate 74 connected by the chain 75 with any well known actuating mechanism used in sewing machines for raising the presser foot.

On the head 44 are mounted the thread tension 76, a thread clamp having the member 7 7 and the arm or clamping member 78 pivotally mounted on the post 79, and the thread guides 80 and 81. This thread clamping member 78 is actuated to the closing position to clamp the thread against said member 7 7 by the rod 82 which is slidable in guides of the head 44 and has the pin 83 hearing onv the cam 72.

plate 61 in the direction indicated by the.

arrow in Fig. 2 a button B can readily be placed in the vertical position shown in Figs. 1, 2 and 6 with its lower edge engaged or seated in the cavity 14 of the throat plate 12 and with its shank 5 extending transversely of the throat 13 whereby the perforation in said shank b is adapted to receive the needle Nin one or more of the stitch forming movements of said needle. The presser foot 54 is now released and, in its downward movement, its members 55 and 56 engage the upper edge of said button B and said members 55 and 56 with the cavity 14 of throat plate 12 thus form complemental button holding means.

Sleeve 57 is now adjusted along rod 51 and secured in the adjusted position which is relative to the center of the button shank I), so that the material or fabric M folded upon itself and placed on said plate 61 will be located approximately as shown in Figs. 1 and 6 of the drawing.

The machine is now started and is operated for the usual length of time to effect, through the stitch forming. devices, the completion of a group of stitches. In such operation the cam '21 is caused to make a complete rotation whereby the follower 23 is caused to vibrate by the shape of cam groove 22 until said cam rotates to a point where the dwell 22 of said groove holds said follower 23 from vibration. The vibration of the follower 23 is transmitted through shaft 2%, arm 26 and rod 29 to slide 33 and to the post 30 and rod to sleeve 49 whereby during the rotation of the looper 38 and the reciprocation of the needle bar 46 these parts and the plate 41 are caused to vibrate with respect to the presser foot 54 and the fabric sustaining member 61 so that, in its successive downward movements the needle N passes alternately through the perforation or openingin the button shank b and through the fabric or material M. At the comple tion of said group of stitches, when the follower 23 is in the dwell 22' of cam groove 22, the operation of the needle and the looper are continued for one or more. preferably 3, loop delivery movements of the needle whereby a chain, so called, is formed between the looper and the stitches which. secure the button to the fabric and the thread extends from said chain around the looper and through the fabric orthrough the perforation in the button shank to the needle and thence through the guides 81 and 80 and between the members 77 and 78 of the thread clamp and, ultimately, to and through the tension device 76 which is set to so resist the feeding movement of the thread that said chain stitches are drawn approximately tight close to the group of stitches which se cure the button B to the fabric.

After such completion of the chain stitches rod 73 is actuated to rotate shaft 68 and to effect the lifting of presser foot rod 51 which of course carries with it the presser foot 51- and the fabric sustaining member or plate 61 whereby the fabric M and the button B sewn thereto are moved upward, that is away from the looper 38. Primarily the rotation of shaft 68 and its cam 72 effects the lifting of rod 82 and the closing movement thereby on the thread clamp member 78 which clamps the thread against its cooperating member 77 to p event the movement of the thread toward the looper 38. After such clamping of the thread the thread puller 70 engages the thread and draws the same laterally whereby a supply is drawn through the tension 76 to facilitate the starting of another sewing operation. Approximately at this time the thread puller 71 acts to draw laterally on the thread at a point between the thread clamp and the needle to take up the slack thread while the continued movement of the fabric sustaining plate 61, wit-h the work thereon, away from the looper so strains the thread that said thread breaks in the chain stitches which are drawn tight between the fabric and the button, so that after the fabric M is flattened out in its normal condition no knot is located at its back and the knot is hidden beneath the button.

With this device no trimming of the thread is necessary.

It is not our intention to limit our invention to the specific construction herein shown as we are aware that the same may be modified without departing from the spirit of our invention.

Claims 14. 15 and 16 have been canceled as the subject matter thereof and particularly the thread tension, the thread engaging and restraining device and the thread puller or means located between said thread engaging and restraining device and said tension whereby the thread may be drawn through said tension without necessarily drawing said thread backward from {the needle, constitutes no part of the present invention.

Having thus described our invention we claim as Patent. v

1. A sewing machine comprising stitch forming means, a. stationary throat plate, a presser foot. forming with said throat plate complemental means for engaging the head of a shank button to sustain said head vertically, and fabric sustaining means adjustable relative to said presser foot.

2. A sewing machine comprising stitch forming means, a throat plate, a presser foot forming with said throat plate complemental button holding means, a presser foot support, and fabric sustaining means carried by said presser foot support.

3. A sewing machine comprising stitch forming means, a throat plate, a presser foot forming with said throat plate complemental button holding means, a presser foot support, and fabric sustaining means mounted on said presser foot support and adjustable relative to said presser foot.

4. A sewing machine comprising stitch forming means, a throat plate, a presser foot forming with said throat plate complenew and desire to secure by Letters mental button holding means, a fabric susmeans may move approximately parallel to said throat plate.

6. A sewing machine comprising stitch forming means, a presser foot bar having means for engaging the upper edge of a vertically extending button, and a fabric sustaining member adjustably mounted on said bar whereby said sustaining means may be adjusted relative to the center of the button so engaged.

7. A sewing machine comprising stitch forming means, a presser foot bar having means for engaging the upper edge of a button, and a fabric support having an adjusting member slidably mounted on said rod and a. sustaining member movable laterally with respect to such rod.

8. A sewing machine comprising stitch forming means, a presser foot rod having a lateral button holding member, a sleeve slidably adjustable on said rod, and a fabric sustaining member pivotally supported by said sleeve.

9. A sewing machine comprising stitch forming means, button holding means having a fixed element with respect to which said stitch forming means are relatively movable, means for releasing said button holding means from the button, and a fabric sustaining means movable with respect to onemember of said stitch forming means.

10. A. sewing machine comprising stitch forming means, button holding means for holding a shank or tail button, means for sustaining fabric against said shank, means for operating said stitch forming means relative to said button holding means and fabric sustaining means to form a group of stitches and subsequently to form one or more knot forming loops, means for clamp ing the thread to prevent its movement toward the stitch forming devices, means for moving the button holding means, to release the button, and for moving said fabric sus taining means to strain the thread, and mechanism for efiecting approximately the simultaneous operation of said thread clamp asaove and said means for moving the fabric sustaining means substantially as described.

11. A sewing machine comprising a frame having a base furnished with a throat plate, a member slidable with respect to such base, means for vibrating said member, a needle bar guide carried by said member, a looper shaft mounted to rotate and slide beneath said throat plate and connected with said member, a pinion on said looper shaft and a driver shaft having a pinion engaged with the pinion of the looper shaft, substantially as described.

12. A sewing machine, comprising a frame having a base furnished with a throat plate, a member slidable with respect to such base, means for vibrating said member, a needle bar guide carried by said member, a needle bar slidable in said guide, means for operating said needle bar, a looper shaft in engagement with said member and mounted to slide and rotate, a plate slidablv mounted beneath said throat plate and having a needle opening, means on said looper shaft and in engagement with said sliding plate, a pinion on said looper shaft, and a driver shaft having a pinion engaged with the pinion of said looper shaft. substantially as described. I

13. A sewing machine comprising a. throat plate having a throat, means for sustaining a shank button with its shank extending over said throat, means for sustaining fabric above said throat and in contact with said but-ton shank, and vibratory stitch forming means comprising a needle, a looper. and a thread moving plate movable coincidently with the looper and located beneath said throat plate. p

ROBERT L. LYONS.

HAROLD W. MORRIS. CARL KNGOLF NIELSEN. Witnesses J. MILLER, M. F. McKay.

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