US1241022A - Embroidering-machine. - Google Patents

Description

J. C. RINGE.

EMBROIDERING MACHINE. APPLxcATmN FILED 1uLY25, w14.

1,241,622, Patented sept. 25,1917.

' 2 SHEETS-SHEET l.

I. C. RINGE.

EMBROIDERINC MACHINE. APPLICATION FILED JULY 25, I9I4.

1,241,022. Y Patentedsept. 25,1917.

. ZSHEETS--SHEET 2.

JOI-IN C. RINGE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR T0 THE SINGER MANU- FACTURING COMPANY, .A CORPORATION OF NEW JERSEY.

EMBROIDERING-MACI-IINE.

Application filed July 25, 1914.

To all whom t may concern:

Be it known that I, JOHN C. RINGE, 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 Embroidering-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates more particularly to an improvement in that class of scallopstitching embroidering machines forming the subject of my lPatent No.` 1,158,391, dated October 26, 1915; and vit has for its objects partly to provide simple and effective means for spreading loops of thread of one of the laterally spaced reciprocating needles beneath the other needle to produce a covering seam by means of the stitching threads only, partly to provide advantageous means for varying the spacing apart of the needles to produce a covering seam of varying width and to provide a strong and effective connection between the needle-actuating crank and two needle-bars reciprocating in unison but relatively movable laterally, and partly to provide a tension device for one of the stitching threads adapted to compensate in its intensity of action thereon for variations in the-width of the covering seam sq as to insure production of a flat seam without puckering the work.

As preferably constructed, the machine is provided with two needle-bars each carrying a needle coperating with a common loopstak'er, one of said needles being mounted in fixed bearings and the other' in a laterally movable needle-frame to which stepby-step movements are imparted by an adjustable link connection with a swinging lever actuated by a controlling cam performing step-by-step rotary movements. The needle-actuating shaft has a crank-pin connected by a link with a tubular stud-pin fixed upon one of the needle-bars and entered by a second stud-pin fixed to the other needle-bar. y

rfhe thread of the needle having a laterally xed rectilinear movement is spread beneath the other needle by means of an oscillating looper adapted to seize such thread between the point of the first-named needle and the work and to distend a loop thereof Specification of Letters Patent.

'their coperative movements.

Patented Sept. 25, 1917.

Serial No. 852,988.

laterally in front of the needles for seizure by a spreader which carries it laterally and backwardly for engagement of the upper limb of the loop with the blade of the second needle adjacent the eye while the lower limb of the loop passes beneath the point of the second needle preparatory to its descent through said loop. The said looper and spreader are sustained by independently mounted oscillatory bars journaled in fixed bearings of the bracket-arm and deriving operativemovements from independent cams upon the needle-actuating shaft.

The machine is provided with a variable tension device for the covering needle-thread comprising thread engaging means acted upon by a spring whose-degree of compression is varied by a connection with the swinging needle-gate so as to produce a greater tension upon such thread when the needles are close together for production of the narrow portions of the seam than when they are more widely spaced.

rlhe feeding mechanism and presser-foot are preferably given step-by-step sidewise movements whereby the work is fed to the stitch-forming mechanism for production of zigzag or curved covering seams, and the independent lateral movements of one needle relatively to the other provide for suitable variations in the width of the covering seam for production of compound scallops in patterns which are'well known in the art.

In the accompanying drawings, Figure 1 is a sectional front elevation of the forward portion of an embroidering machine of the well known Singer type embodying the present improvement, Fig. 2 is a plan of the same, and F ig.. 3 a front end elevation of the same with the bed-plate in section and the face-plate of the bracket-arm removed. Fig. 4 is a perspective view of the needle` actuating means and the tension controlling device connected therewith. Figs. 5 and 6 are perspective views showing the needles, the looper and spreader in two stages yof Fig. 7 represents in detail the needle-reciprocating means. Fig. 8 is a detail sectional view of the variable tension v device.

The-machine is constructed with a frame comprising the usual bed-plate 1 with bracket-arm formed with the hollow standard 2 and overhanging member' 3 terminating in the head 4 and provided with suitable bearings in which is journaled the main or needle-actuating shaft 5. The primary needle-bar 6 is journaled in fixed bearings in the bracket-arm head 4 and carries the needle 7 which is disposed in laterally spaced relation with the sidewise movable needle 8 carried by the reciprocating needle-bar 9 journaled in bearing bosses 10 of the laterally swinging needle-frame 11. The needleframe 11 isv provided with the alined fulcrum-pins 12 which are suitably journaled in the bracket-arm head 4 to permit the lateral movement of the needle-bar 9 toward and from the needle-bar 6.

The needle-bar 6 `has fixed thereon by means ofthe set-screw 13 the laterally projecting arm 14 having an opening 15 through the same embracing the needle-bar 9 and provided with a depending lug 16 carrying the laterally projecting tubular stud-pin 17 which is embraced by the tubular boss 18 vat the lower end of the link 19 having the tubular boss 2O at its opposite end embracing` the shouldered crank-pin 21 upon the take-up cam-cylinder 22 fixed upon vthe forward end of the main-shaft 5. The

tubular stud-pin 17 has slidingly fitted thereiny the stud-pin 23 which is formed with a head 24 having a transverse aperture 25 loosely embracing theneedle-bar 9 and an intersecting transverse aperture 26 within which is fitted the plug 27 apertured to admit the needle-bar 9 to which it is secured by means of the set-screw 28. Through the means just described, the needle-bars are reciprocated in unison by a connection with the common actuating crankelement and link .and are permitted to have relative lateral movement.

The boss 18 is reduced at its outer end to receive the anti-friction roller 29l which moves in the vertical guiding groove 30 in the bracket-arm head 4 to prevent the turning of the needle-bars in the operation of the. machine.

. Cooperating with the needles inthe procation, the main-shaft has secured thereon'a i As represented in myl said ypending applilaterallyv adjustable eccentric 38 connected by the rod 39 with a rocker mounted upon the bearing studf40 and having an arm carrying the pawl 41 meshing with theratchetwheel 42. Rotating with and deriving step-by-step movements from the ratchetwheel is the pattern-disk 43 formed in its inner face with the cam-groove 44 which is entered by the stud 45 of the rock-lever 46 having a depending arm connected by the link 47 with the laterally movable feed-dog carrier 48 sustaining the feed-dog 49 and deriving reciprocatory work-advancing and rising and falling movements from usual or suitable means.

Securedl upon the rearward face ofthe ratchet-wheel 42 by screws 50 is the camdisk 51 provided in its rearward face with the cam-groove 52 which is entered by the roller-stud 53 carried by a lateral lug 54 of the swinging segment-lever 55 having the fulcrum-pin 56 journaled in a suitably apertured bearing lug 57 depending from the bracket-arm member 3. The segment-lever 55 is formed with an undercut slot 55 entered'by the similarly shaped head of a studscrew 60 passing through the end section 58 of the bent link 59 and provided with the clamp-nut 61 by means of which the studscrew 60 is adjustably secured upon the lever 55. The link section 58`is'channeled in its rearward face to receive the extremity of the sectiony 59 which isl adjustably secured thereto by means of fastening screws 62 passing through a slot 58 of the section 58 and tapped into vthe section 59, a washer 62 ,l being interposed between the heads of the, screws 62 and the section 58; ,The eyed opposite extremity of the link section59 emf braces the screw-pin 63 tapped into the lateral ear 64 of the lower bearing boss 10 of the needle-frame. Through the described connections, the needle-bar 9 derives from the cam-groove 52 step-by-step lateral movements toward and from the needle-bar 6.

Journaled in fixed bearingsin the bracketarm head'4 yare the vertical oscillatory shafts 65 and 66, arranged in alinement with the needle-bar 6 relatively to the direction of ladvance of the work; the one ypositioned in front of the needle-bar 6 and the other rearywardlyof the needle-bar 9 `relatively to the direction of feed. Secured by means of the fastening screw 67 within a slotof the bar 65 is the shank 68 of the depending and laterally extending hooked looper 69adapted to move in a segmental path beneath the needle 7. The bar 66 has secured uponits lower end by means of the set-screw 7 0 the apertured boss 71 of a curvedy arm 72v having a depending lug 73 to which is secured by screws 74 the shank 75 of the laterally and ldownwardly extending spreader 76 moving in a segmental path across the forward extremity of thatof the looper 69 and transversely to the side of the laterally moving needle and slightly rearwardly thereof.

The bar 65 has secured upon its upper end by means of the set-screw 77 the apertured hub of a crank-arm 78 carrying the ball-stud 7 9 which is embraced by one end of a connecting rod 8O whose opposite end embraces No a ball-stud 81 upon4 the 'upper arm oi'a lrocklever 82 mounted'upon the fulcrum-stud 83 and carrying upon its-lower arm the' rollerstud 84which enters the cam-groove85 of the cam-cylinder 86 fixed upon the main-shaft 5. The upper end of the bar 66l is similarly provide'dwith the crank-arm 87 carrying the ball-stud 88 connected by means of the rod `enters a kcam-groove 91 ofthe cam-cylinder 495 also'iXed upon the main-shaft 5.

As represented in Fig. 3, the bars A and 66 have secured thereon directly'beneath the upper'bearingmember of the bracket-arm head thrust-collars acting in conjunction with the hubs ofthe crank-arms 78 and to restrain' them against vertical or endwise movement while permitting oscillatory movement. Y

The cam-groove is 'shaped to impart to the looper l69 aquick movement from a position at the outer side and rearward of the rectilinearly reciprocating needle 7 to a position'in advance of the laterally lmoving needle 8 at whichrpoint lthe `loop .of needle-thread thusiormed isseized by the spreader' under the influence of the camgroove 91 and carried to its extremelateral and rearward posi-tion wherein the upper limb of saidloop is engaged by the needle 8 while the lower limb is carried beyond the path or' movement of the same and between v its blade and the thread leading from its eye to the work preparatory to the descent of the needle 8 through the thread of the needle v'7 thus presented to it. l rlhe looper immediately moves back toI its initial position where it remains immovable until thel needles rise for a succeeding stitch, while the spreader performs 'a corresponding retractive movement into initialposition in advance of the needles whereit dwells until the succeeding covering needle-threadvloop is carried'into itsy path'for presentation to the needle 8.

" Secured upon the rearward face of the bracket-arm head 1 is a rigid arm 96 having transverse apertures in which are secured by means 'of thev set-screws 97 the axially socketed plugs 98 of the-needle-thread tension devices, the upper one owhich corni prises the opposed dished washersl 99` pressed normallytogether 'by means of the spring 100 surrounding the threaded stem 101 and 4interposed' between the outer lof said washers rand the-nut 102 applied to said stem, the

usual. check-spring-108 being'I housed within the cavityof theplug 98. `The lower of fthese tension devices is of well-known form,

and comprises, as represented in Fig. 8. the

within an axial aperture of the plug 98 by means of the set-scre-w 105, a-nd--having-its split opposite end"portionthreaded to receive the thrust-nut v106. Mounted upon `the stud 101"exterior to the plug 98is the tubular hub 1070i' the washer 108 upon "which are mounted' the cupped tension disks 1109 between the outer'one ofwhich and the Inut 106v is interposed thev tension springll. 'l/Vithin the'aXial; bore `oi the stud 101 is inltroduced the push-pin 111 having a cross-bar 112 working withinthe' transverse slotk of the stud 104 and interposed between Ithe washer 108 and a shoulder of the stud 101.

Secured upon the upper needle-framel fulcrum-pin 12 by means oi' the set-screw 113 isthe hub '114; of a crank-arm 115 whose outerend is connected by means of the short I "link 116 withthedepending'armlll' 4oi a tension controlling cam-lever'mounted'upon eyes oi the take-uparm 1211 to the laterally moving needle 8, while the other needlethready'is' led from its source of supply be- 'tvveen the tension-disks 109 and thence beneath the guide-pulley128'a'ndl through the other eye of the take-up arm '124'to the recti-linearly reciprocating needle 7. As the needle-frame 11 performs its 1 lateral step- 'by-step movements, it communicates to the cam-lever v117 119 rocking lmovements through the described connections from which' the axial push-pin 111 derives opervative -movements inl thrusting the tensiondisks 109 toward the nut 106 and thereby compressing the tension-spring 107 to vary the drag uponthe' thread leading to the Vneedlev7.

As ydescribedf'more'fully -in my said pateiit7tlie presser-bar 125 sustains upon its lower end the sidewise movable presser-foot 126 rearward of the needles-and the spring smoothing-plate 127 and cord-guiding stripf per-finger 128 in advance thereof.

In the operation of the machine, the -needles descend through the work, and as their. points emerge therefrom the thread of vthe needle 7 is seized by the looper and passed in the form ora loop to the spreader which presents it distended for passage by the needle 8 in its succeeding descent. As the stitching progresses, thework'is advanced and simultaneously moved sidevvise step-by-step to produce a curved seam which is varied in width according to the pattern determined by the shape of the cam-groove 52 by the step-by-step sidewise movement of the needle 8. The rocking of the needleframe causes the actuation of the cam-lever arm 119 which acts through the push-pin 111 to vary the compression of the spring and hence correspondingly vary the drag upon the thread of the needle 7 by means of which, in conjunction with the action of the take-up, the covering needle-thread is maintained taut in each stitch so as to produce a fiat seam but without drawing the fabric sufiiciently to pucker it.

wWhen it is desired to produce a covering seam of uniform width, the stud-screw 60 is shifted into neutral position in alinement with the fulcrum-pin 56 in which position the needle-frame link 58 59 is maintained against operative movement and the needleframe is held stationary. The spacing of the needles apart under such condition may be adjusted by loosening the screws 62 and adjusting the link section 59 endwise of the section 58.

While the present improvement is herein shown and described in connection with the machine forming the subject of my preau viously mentioned patent, it is obviously adapted for embodiment in other types and varieties of machines, the` various 4features of the improvement being adapted for indi-V vidual employment Without the others, and being susceptible of considerable modification in the construction and arrangement of the component parts without departure from the scope of the invention.

Having thus set forth the nature of the in- 40 vention, what I claim herein is l. In a sewing machine, the combination with stich-forming mechanism vcomprising a plurality of laterally spaced reciprocating needles, kof a looper adapted to seize the thread of one needle at one side of the work and carry a loop thereof laterally, a spreader adapted to seize said thread-loopl from the looper and present it for passage of the other needle at the same side of the work, oscillatory bars fixed against endwise movement and sustaining respectively said looper and spreader, and means for imparting to said bars operative movements.

2. In a sewing machine, the combination with stitch-forming mechanism comprising a plurality of laterally spaced reciprocating needles, of' a looper adapted to seize the thread of one needle at one side of the work and carry a loop thereof laterally, a spreader 6U adapted to seize said thread-loop from the looper and present it for passage of the other needle at the same side of the work, oscillatory bars mounted in fixed bearings parallel with the direction of thrust of the needles and sustaining respectively said looper and spreader, and means for imparting to said bars differentially timed operative movements. p

3. In a sewing machine, the lcombination with stitch-forming mechanism comprising a plurality of laterally spaced reciprocating needles, of a looper adapted to seize the thread of one needle at one side of the work and carry a loop thereof laterally, a spreader adapted to seize said thread-loop from the looper and present it for passage of the other needle at the same side of the work, oscillatory bars mounted in fixed bearingsv and sustaining respectively said looper and spreader, means for imparting to said bars differentially timed operative movements, and means for imparting to the last-named needle step-by-step lateral movements toward and from the other needle.

4. In a sewing machine, thel combination with a rectilinearly reciprocating needle-bar mounted in fixed bearings and carrying a needle, of a laterally jogging needle-frame,

a reciprocating needle-bar journaled therein and carrying a needle, loop-taking devices, common means for reciprocating said needlebars, and means sustained independently of said rectilinearly reciprocating needle-bar and of the bearings therefor for imparting yto the needle-frame a plurality of step-bystep lateral movements in the same direction.

5. In a sewing machine, the combination with a reciprocating needle-bar mounted in fixed bearings and carrying a needle, of a laterally jogging needle-frame, a reciprocating needle-bar journaled therein and carrymg a needle, spreader mechanism adapted to seize a loop of one needle-thread and present it for passage of the other needle at the same side of the work, loop-taking devices, common means for reciprocating said needle-bars, jogging means including an actuating element and a reciprocatory element in constant operative relation therewith, for imparting to the needle-frame step-by-step 11o lateral movements, means for rendering said jogging means ineffective, and means wherebv the spacing apart of said needles may be adjusted.

6. In a sewing machine, the combination with a rectilinearly reciprocating needle-bar and a laterally movable reciprocatingneedlebar each carrying a needle, and means for imparting lateral movements to the secondnamed needle-bar, of an actuating crankelement, a tubular stud-pin rigidly secured 'to one of said needle-bars, a `stud-pin carried by the other of said needle-bars and entering said tubular stud-pin, the aXes of said stud-pins substantially intersecting the axes of the needle-bars, and a link connection between said crank-element and'one of said needle-bars.

7. In a sewing machine, the combination with a rectilinearly reciprocating needle-bar and a laterally movable reciprocating needlebar each carrying a needle, and means :tor imparting lateral movements to the secondnamed needle-bar, of an actuating crank element, a tubular stud-pin rigidly secured to the rectilinearly reciprocating needle-bar, a link connection. between said crank element and stud-pin for recipro .atin;.,)` said needlebar, and a stud-pin carried by the laterally movable needle-bar and entering` said tubular stud-pin.

8. In a sewing machine, the combination with a rectilinearly reciprocating needlebar and a laterally movable reciprocating` needle-bar each carrying a needle, and means for imparting lateral movements to the second-named needle-bar, of an actuating crank-element, a. rigid arm fixed t0 the rectilinearly reciprocating needle-bar and apertured to embrace the laterally movable needle-bar and carrying a tubular stud-pin, a link connection between said crank element and stud-pin, and a stud-pin carried by the laterally movable needle-bar and slidingly tted within said tubular stud-pin.

9. In a sewing machine, the combination with a reetilinearly reciprocating needle-bar and a laterally movable reciprocating needle-bar each carrying a needle, and means for imparting lateral movements to the second-named needle-bar, of an actuating crankelement, a tubular stud-pin rigidly secured to the rectilinearly reciprocating needle-bar, a link connection between said crank element and stud-pin for reciprocating said needlebar, a transverse plug apertured to fit the laterally movable needle-bar, means for securing it in position, and a second stud-pin entering said tubular stud-pin and provided with a head transversely apertured to iit said plug and to embrace the needle-bar to which it is secured.

10. In a sewing machine, the combination with stitch-forming mechanism comprising a plurality of reciprocating needles, means for producing between them relative lateral movements, and means whereby thread is laid between said needles upon the work in the production of stitches, of a needlethread tension device, and means for vary- Copies of this patent may be obtained for ing the intensity of action of the tension device upon the thread proportionately with the lateral spacing apart of said needles.

l1. In a sewing machine, the combination with stitch-forming mechanism comprising a plurality of reciprocating needles, sideshifting means for imparting to one of said needles step-by-step lateral movements toward and from the other needle, and means whereby thread is laid between said needles upon the work in the production of stitches, of a needle-thread tension device, and means connected with said side-shifting means for varying the action of said tension device upon the thread of one of said needles.

12. In a sewing machine, the combination with a reciprocating needle-bar mounted in iixed bearings and carrying a needle, a laterally jogging needle-frame, and a reciproeating needle-bar journaled in said needleframe and carrying a needle, of a tension device, a crank-arm rigidly connected with said needle-frame, and means connected with said crank-arm for controlling the intensity of action of the tension device upon the thread leading to one of said needles.

13. In a sewing machine, the combination with a reciprocating needle-bar mounted in fixed bearings and carrying a needle, a laterally jogging needle-frame, and a reciprocating needle-bar journaled in said needleframe and carrying a needle, of a tension device comprising thread-engaging means, a spring acting thereon to produce a drag upon the thread, an endwise movable pin acting upon said spring to vary its normal degree of compression, a cam-lever acting upon said pin, a crank-arm rigidly connected with said needle-frame, and an operative connection between said cam-lever and said crank-arm.

In testimony whereof, I have signed my name to this specication, in the presence of two subscribing witnesses.

JOHN C. RINGE.

ve cents each, by addressing theY Commissioner of Patents, Washington, D. C.

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