US1346884A - Sewing-machine - Google Patents

Description

Cc Fl SEWING MACHINE. APPLICATION FILED MAR. 24, 1919.

2 SHEEISSHEEI l.

WITNESSES IIVVENTOR if Ulmrlcsfray.

Patented J My 20, 1920.

. I ww.

- A TTO/M/EY C- F. GRAY.

SEWING MACHINE. APPLICATION FILED MAR.24, 1919.

1 46,884, Patented July 20, 1920 Z SHEEIS-SHEET 2. 1\- I L INVENTOR WITNESSES: I 0% 6. 7 W (771 esrar 'M v '7 UNIT ED' s 'a-Ts s P A T T Q FF ZC E- specification, reference being hadtherein to.

guides, especially such as binders, folders CHARLES F. GRAY, or SIERRA MAIDBE, cA Ii oR ImAssIGnoR ro r'rin smena;

- MANUFACTURING G01VIPANY,-A CORPORATION on. NEW JERSEY,

' SEWING-MACHINE. V

Sierra Madre, in thecounty' of Los Angelesand State of California, have invented certain new and usefulImprovements in Sew- Y ing-Machines, of which the following is a the accompanying drawings.

This invention relates toimprovements in and the like, for use in oonnectioniwith sewing machines and more particularly withsewing machinesemp'loying an endwisereciprocating needle mountedfor bodily lateral movements, as for instance in so termed needle-feed sewing machines wherein the needle :moves bodily laterally during the feeding of the material, thereby maintaining the severalplies of material beingv stitched in definite relation; Y f Y In the employment of guides in sewing machinesof the class referred to, it has heretofore been'the practice to securethe guide on the cloth-plate or work-cylinder as close as practicable and in advance of the point of penetration of the "material by the needle, As the needle then moved bodily away from this point during the feed of the material it was impossible to at all times sharply turn the work, as the material was held attwo spaced points.

The present invention has for its object to obviate this difliculty-inherent inmachins as described and to provide a sewingmachine having an endwise reciprocating and bodilylaterally movable needle with aiguide maintaining a] substantially definite spaced relationwith respect -to' the needle throughout the lateral movem'entsofithe latter.

Y In the-preferred embodiment ofthe-present improvement, the sewing machine mechanism employed is substantiallya's disclosed in the Unitedf States patent to: Albert Rontke, No. 989,538, dated April 11, 1911, employing an 'os'cillatingfeed actuating frame in which the needle-bar is journaled for reciprocating movements and upon whichthe feed+dogis secured.- It is .to be understoodhowever that the nvention is 1 ment.

my os a ma 'r Patented July 20,1920. Application filed. March-24, 1919. Serial no. 284,789.

limited to a sewing mama- Gamingthis mechanism, but is equally applicable to other'types of sewing. machines embodying f bodily laterally movable needles.

In accordance with the present construe tionand in order to maintain the definite relation'referred to withthe' needle, av guide in the present instance in the-form of a binder is carried by'a supporting platesuitablyful- 1 1 crume d 'atja; point substantially in alinement Y5 with the fulcrumof the'joscillating 'feed ac- Y ;tuating frame.

-A stud carried by the binder-supporting; plate projects downwardly into an aperture in the feed-bar, in-' suring lateral movements of the binder with the needle. ;'The binder is positionedclosely 1 in advance of the needlei'andfinasmi'iclr as it V maintains this relative position throughout the feeding-movements of the needle, 'it is practicable to-turn the sharp curves.

WOrkto stitch around In the accompanying drawings,

.is. a. front sectional elevation-of a;- sewing machine embodying the present 5 improvechine in front; endelevajtion. Fig; '3 is :a

. ing plate partly cutaway.

Inasmuch as the, sewing*n1acl 1ine mechaings is constructed substantially] as fully shown and described in theprior U. S. Patent No. 989,538 hereinbeforerefe'rred to, ref- FigQQ'is; a View oiizthe sewingjma;

'11lSI11 illustrated in-the accompanying draw I erence will be made'to'gonlysuch portions thereofas' is deemed essentialto an-underv standing of the present-invention. 5 i

' Referringto the drawings, the sew'm ma;

chine comprises a. work-arm or cylinderfl,

from which rises the: hollow'arm-standard' 2 and'overhangingbracket-.arm3 terminating 1 in thehead 4. Journaled in suitablebearings provided in the armstanda'rd ando'ver-g hanging bracket-arm is the mainor needl'e; 7 bar actuatingnshaft 5 carrying at onefend v of the Y belt 8. with the pulley. -9 secured'upon the usual 1 belt-wheel V 6. Thev main-shaft; 5- .-also:carries the pulley 7,.connectedbymeans Y link 16. The other end of the link l6is provided with a sleeve 17 entered by the pin 18 projecting from the collar19 suitably-secured upon the needle-bar 20, carrying the needle 21. a By means of this construction,

endwise'recipr'ocatory movements are im parted to theneedle-bar 20, which is journaled in'vertically'alined apertures formed in the oscillating feed-frame 22. 5

Thefeed-frame 22 is mounted tooscillate upon oppositely arranged'pivotal bearings comprising the fulcrum stud 23 threaded into-theo'verhanging arm, and pivot-pin 24,

secured by the screw 25in the arm-26 of said feed-frame and, enteringan aperture 27 formed in the work-cylinder 1. To the for ward end of the arm 26, of the feed-frame is secured by means of the screw' 28 the feedbar 29 havinga raised serrated portion or feed-dog 30 and a needle-aperture 31. The :feed-frame 22 receives its oscillating movements from an eccentric 32 on the mainshafto, embraced by; a strap 33 having an aperturedboss; 34adaptedto be entered by af'pin 35'; The pin 35 is formed or other- -wise provided at its'lower end with an eccentric portion 36 which is adjustably secured by means of the screw 37 in the apertured ear 38 provided on the feed-frame. The eccentric 32-may be adjusted tovary the-feed by means of the rod 39 in a manner well known, and as fully shown and described'in the U. S. paten'tto W. F. Dial 6?? al., No. 718,988, May 27, 1903.

Pivotally' mounted upon the work-cylinderon' an axis substantially in alinement' with the axis of oscillation of the feed-frame 22is the supporting plate 40 of a guidein the form ofa binder 41 adjustably secured to said supporting plate-by screws, as 42. This supporting plate serves also as a cover "for the work-cylinder and it'is provided with an aperture entered by the pivot-pin j 24. IThreaded-intothe pivot-pin 24 is a screw 43 between the headof which and the supporting plate 40 is interposed a coiled spring 44 to yieldingly hold the supporting plate in position upon thework-cylinder. The binder herein shown is of 1 that well known type styled as British binders, but

7 it istobe understood that the invention f is not limitedto this type'of binder. It will be observed thatth'e binder-head is partially cut away to permit its positioning closely adjacent to the needle and that by means of a stud 40, projecting downwardly from the 'fsupporting plate and adapted to enter an aperture 29 in thefeed-barythe needle 21,

feed-dog 30 and binder 41 maintain a definite lateral relation with respect to each other thereby permitting the turning of sharp corners, at the same time obtaining the advantages inherentina needle-feed machine by preventing relative movement of the body and binding materials during the feed of the same. Owing to the distance'of the axis of oscillation of the feed-frame from the needle, it is obvious that the pivotal point of the binder might be slightly. offset from said axis of oscillation without to any great extent interfering with the effectiveness of the relatively positioned needle and binder.

Movable laterally with the feed-dog 30-is the step feeding-foot'45 carried by the -feeding-foot bar 46 journaled for vertical movement in the feed-frame 22. The vertical reciprocations of the feeding-foot alternate with like movements of-the resser-foot 47 the alternate reciprocations of these elements being caused by mechanism such as fully shown and described in the patent to Rontke, No. 989,538 before referred to or by any other suitable mechanism of a like char-. I acter which are well known in the art. The feeding foot '45 is partly cut away at 48 to permit of close adjustmentof the-cut-away binder relative tothe needle. The binding is'led between tension-pins, as 49 from a.

suitable: supply holder, through a guide 50 whichimparts an initial fold to thelfabricand thence to the binder 41.

Insthe operationof the sewingmachine and during the feeding movement-of the needle, .thebindingis held by the needle positively in position upon the margin of .thelbody-fabric, the feeding foot 45- contact-: ing with the work and thepresser-foot 47 being :raised. During. the return 'move ments of the feed, the feeding footis raised and the presser-foot contacts with the work.

The return movement of the binder at this.

time andthe holding of the binding and body fabric by thepresser-foot draws the binding through the binder and stretches it closely over the margin of the body-fabric. The needle now pierces the work and maintains this relation of the binding'andfbody fabric. 7 .7 V

aThe present machine therefore includes binding and body fabric in the desired relative positions, and stretching the binding closely"? about the wedge of thebody fabric inaddition to the improved feature of per- 'mitting the turning of sharp corners by 1 maintaining a substantially constant position relatively to the needle and the binder.

Having thus set forth the nature of the invention,"what I claim herein is the well known features of maintaining the y r 1; In a sewing machine,'the combination with an endwisereciprocating and bodily laterally movable needle, and meansfor im 7 parting said movements to the needle, of a binder, and means for actuating said binder to maintain a substantially constant posi- 'tion relative to the lateral positions of said needle.

' movements to said feed-dog in timed relation with respect to the lateral movements of the needle, of a binder, and means for actuating said binder to maintain a substantially constant relative position with respect to the lateral positions of said needle. 3. In a sewing machine, in combination, a needle, means for reciprocating said needle, a feed-dog, means for imparting feeding movements to said feed-dog, a binder, and means for moving said binder with said feed-dog, whereby the movements of the feed-dog and binder remain substantially in parallelism.

4L. In a sewing machine, in combination,

a needle, means for endwise reciprocating parting bodily lateral movements to said needle and to said binder upon axes substantially in alinement.

5. In a sewing machine, in comblnation,

said needle, a binder, and means for im-H F a needle, means for endwise reciprocating I said needle, a feed-dog, a binder, and means for imparting lateral movements to said. needle, feeding movements to said feed-dog and bodily movements to said binder upon axes substantially in alinement.

6. In a sewing machine, in combination, an endwise reciprocating needle, means for reciprocating said needle, means for .imparting bodily lateral movements to said needle, a binder and connections intermediate said last named means and said binder p for maintaining the binder at a substantially constant distance from said needle throughout the lateral movements'thereof.

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

' CHARLES F. GRAY.

Images