US861276A - Sewing-machine. - Google Patents

Description

5 SHEBTFSHBL'T 1.

No; 861,276. PATENTED JULY 3o, 1907. o. B. RADLEY. SEWING MACHINE.

APPLIGATION FILED 00T. 9. 1902.

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No. 861,276. PATEN'IED JULY 30,` 1907.

C. E. HADLEY.

SEWING MACHINE. APPLIOATION FILED 00T. 9`. 1902.

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N0.s61.276. l 'Y PATENTBD JULY 3o, 19o?.

GI B. RADLEY.

SEWING MACHINE.

ArrLlcATIoN P ILBD ocT. s, 1902.

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- No. 861,276. PATENTBD JULY so, 1907.

G. E. RADLEY. SEWING MACHINE.

APPLIULTIOF'PILED 00T. 9, 1902.

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UNITED lsrnrns PATENT `OFFICE.

CHARLES E. HADLEY, OF CHIGO'PEE, MASSAH-USETTS.

SEWING-MACHINE.

To all whom it may concern: IBeit known that VLCHARIJszs E. HADLE-ma citizen of the United States of America, and a resident ofChicopee, inlthe county of Hampden and State of .Massachusetts, have invented .certain new and useful Improvements in Sewing-Machinesfof whichfthe vfollowing-.is a full, clear, and' exact description.

This invention relates to sewing-machines,.and-ithas foroneof its objects'the provision ofamachine for uniti ing the abutting edges-of two pieces offabric, or otheri wise sewing a fabric or lfabricsbyan overstitch formed v 'of two threads, .the successiveloops-of whichareinterlocked, -thus constituting what might be termed .al lock over stitch.

Hence .my inventioncomprises as one of its features an eye-pointed needle, mounted 'for movement transverselyof the `fabric and :in vsuch a manner vthat the needle'thread .is carried through thecloth, and in the combination therewith, o f a device wherebythe other 0r interlocking thread .is passed through .the Sloops formed b y the needle threadI atiboth ends of the needle stroke.

The needle-operatingimechanism includesin its `preferred organization .fan loscillatory 'needle arm, the movement of which, onbothsides of theseam line, :is such that ailoop will beformed in the needle `thread `immediately uponfthe initial .movement ofsaid arm on p itsireturnfstrole, in either direction, sothat thefshuttle or locking thread may be passed through said -.loops, L Lrst v on one side and lthen l on 'the other, successively, thus vnot-only preventing .the loops yfrom being .drawn out of'thefabric, but furthermore, vforming afzigzag line I `across the joint line between the `cloth sections, *andi consequently assisting in drawing, in caseswherefseparateipieces are lbeing -sewed, vthe abutting edges to, .gethen While itis obviousthat thisiresultmaybe ac- .complishedin various Ways, I have shown the-second- E ary or :locking lthread wound lon a bobbin, .which iis: carriedin a shuttle, having-both-ofitsends pointed, `so E as .to .pa-ss through the'loop,'when-movingvin either di- .rection back and forth, lthuspassing the sh'uttlethread .entirely-through the loop alternat'elyon'opposite--sides 1 Yof `the cloth joint line, fsaid .loop being drawn in as -soon as theshuttle has passedthrough, `byanysuitable tension device cooperative-with the yneedle Amoveunent.

My invention 'has furthermore Vfor -itsrobj ect the provisioniof ashuttleand -its carrier l-having a vqoredeter- .mined movementand disposed on the samefside ofthe fabric with the needle arm, `thepaths offtheshuttle and needle .intersecting each other vat two points l disposed Tat'opposite sides of the-cloth seam vline,:and .in such ra 'fmanner ythat the lmovement of needle on its return fstroke `will leavea loopiof the needle thread in afdirect .line withthe -path of the shuttle.

"Specification of Letters Patent.

Applicatiuniiledetober 9, 190,2. SerialNo. 126,408.

latented. July 30, 1907.

around `parallel axes, one of which lis superposed relativelyto the other, the radial distance of the needle from its oscillation axis being smaller than that of the shuttlelfromits axis.

.Eromtheabove it .will vbe understood that=the Vpaths of both needle and shuttleare xed,.and.inasmuch as themachine is adapted to goods of diiferentthicknesses, the table is mounted for movement to conform tothe various requirements, suitable .means being provided forforcing-thetable upward, and thuscausethe fabric tocome .into lproper position ,tobe operated upon, this position beinggoverned by a presser foot, which is normally stationary but may be adjusted for `different thicknesses of cloth as well asto regulate the penetration depth of the needle, so that the needle thread may appear on both sides of the-fabric, or else a blind stitch i may be made.

In theaccompanying drawings, in which similar Char- 1 vacters Ydenote similar {Jawa- Figure 1 is a side view ofa .machine embodying my invention. Fig. 2 .is a top view thereofpartly broken away to disclose the interior. fFig. 3 isan end View of the machinelookingfrom the right of Fig. 1. Fig. 4 is a vertical cross sectionithrough thetable, andillustratesthe shuttle-carrier and shuttle in detail. Fig. 5 is a front view oftheshuttlecarrier removed from the machine in :its operating mechanism. fFijg. 6 is a side view'thereof `looking fromthe left of sFig. .5. Fig. 7 is raifront view ofthe shuttle race. Fig. .8 is a transverse -section thereof,` on -line 8-8, of Eig. 7. Eig. 9 is acentral section of the .eccentric for-operating' .the 4-feed mechanism. Fig. l0 .is a yfront view thereof .looking fromithe right of Fig. 9,.and Figs. 1l to 18 inclu- -.sive are perspective lviews.illustratingthe stitchasit is progressively formed .bythe movement of theshuttle :and meedle.

Referringftofthe drawings, 20 denotes a suitable-frame having bearingsZl, v22, for'supportingthemain vdriving .member vor shaft 23,-on which the severalactuatingde vices ofthe.machineareemounted and whichmaybe opieratedfrom a band wheel v24in any convenientmanner.

The fneedle .N is .in the l.present instance, secured -to van.arm.25 ymounted upon a :needle-shaft 26, which .is )journaledin .the frame20 andis'providedlnearits rear -end .with an-arm'27 Y connected` and operated for oscilla- :tion by an eccentric-28. secured upon-thelinainshaft123 iabovementioned. .In thisLmannerthe needlehas virny parted .to it an loscillatory lmovement .ein a Apredetermined path relative to the needle N so as to vconformto the variousthicknesses.ofmaterial to be sevvfed- .The presser foot, whichfisherein designated by P, is normally stationary during the operation of sewing, -but vis adaptedfor verticaly adjustment relatively-to the needle path so that the position of the cloth to be sewed may be varied to permit the needle to penetrate the cloth at a higher or lower point thereof, and thus produce either a blind stitch or one in which the needle thread will appear on both sides of the cloth as will be hereinafter described,

The adjustment of the presser foot may be accomplished in any suitable manner, and in the present instance 1 have mounted the same for sliding movement in the frame 20; while a screw 29 rotatably held in a bracket may be employed for adjusting the presser foot as desired.

While from this construction it will be understood that the upper side of the cloth will be substantially in a predetermined position relative to the needle, the table is as has been above mentioned, mounted for movement relative thereto, it being preferably provided with an arm 31, the rear end of which may be pivotally supported, as at 32, on the frame; while a direct support is afforded to the table by a spring 33 interposed between the head 34 of a bolt 35 and a Washer 36 through which said bolt may loosely pass and which in turn is supported by a projection 37 provided therefor on the frame 20.

r1`he upward movement of the table may be limited, as for instance, by a nut 38 in screw-threaded engagement with the bolt and adapted to come into contact with the lower surface of the projection 37 above re- 'i'erred to.

As previously stated, the present machine is especially designed for the production of a lock stitch, and for this reason the needle thread is coperative with a lock thread preferably carried in a shuttle S, the movement of which is such as to intersect the path of the needle point near both ends of its movement, and which may be supported in a carrier, designated in a general way by Gand mounted for oscillation around anaxisnot in alinement with the needle shaft 26 and preferably superposed thereto. l

The carrierrO is provided with pins 40 exteriorly engaging the shuttle near both ends thereof, but allowing free play thereto in order to allow the thread, or more `particularly speaking the loop of the needle thread to v slip over said shuttle, as is usual in lock stitch machines.

The operation of the carrier C depends upon the action of a shaft 41 constituting its actuating member and journaled in suitable bearings in the frame 20. Oscillatory movement may be imparted tothe shaft 41 by an arm 42 mounted upon a shaft 41 and connected with an eccentric 43 secured upon the main shaft 23.

From this construction it will be seen that the movement of the shuttle is predetermined, and that on account of the non-alinement of the two axes of oscillaltion, the paths of the shuttle and needle will intersect each other at opposite sides of a line passing through both of the centers of said shafts; this line being in a "plane with`the joint line of the cloth pieces to be sewed "tcgether and supported on the table T, the cross section of whichis substantially inverted V-shaped and clearly 'shown in Figs. 3 and 4, so that their edges may abut in proper positionrelative to the movement ofthe needle and shuttle.

I As above stated, the shuttle S is supported in a carrier G, and inasmuch as the pins 40 of the carrier are only functional in causing the shuttle to move in unison with the carrier, means are provided whereby said Shut,

tle will be held in proper engagement with and between the pins 40; these means consisting substantially of a plate 44 disposed in front of the shuttle and constituting a protection and a race-way for the shuttle.

Thel plate 44 is preferably made L-shaped in section, to afford a bearing member 45 for the carrier C, the construction of which is necessarily light and which is provided with grooved lugs 46 to straddle the rib portion 45 of the shuttle race.

The plate 24 is preferably stationary and securedto the arms 47 of a support member 48 clamped on a proj ecting hub on the frame 20, as forinstance, by a screw 49.

The feed mechanism, which I preferably employ in connection with my present machine, is clearly illustrated in Figs. 1, 3 and 4 of the drawings, and comprises a feed dog 50 the cloth-engaging teeth of which have a vertical as well asa longitudinal movement relative to the stationary presser foot P.

The longitudinal movement of the feed dog is in the present instance, dependent upon the movement of a slide 51 on which said feed dog is pivotally supported, as at 52, and which is guided by a bracket 53 secured upon the under side ofthe table T, as for instance, by a screw 54.

Reciprocatory movement is imparted to the slide 51 by a lever 55 constituting a link between said slide and an actuating member consisting substantially of an eccentric 56 mounted upon the shaft 23 and comprising a cylindrical member 57 the axis of which is disposed at an angle with that of the driving shaft 23 as clearly shown in Fig. 1. The cylindrical member 57 is fast to, and driven by, the driving-shaft. Surrounding part 57 is a sleeve 58 loosely fitted for free rotation, relatively thereto. The periphery of sleeve 58 is spherical so as to allow a manner of universal joint action.

59 is a case having a socket into which the spherical sleeve 58 is tted to freely move and which carries a Spline preventing the sphere from revolving in thecase, see Figs. 9 and 10.

On the exterior of the socketed case are provided Ways to allow the approximately vertical adjustment of the yoke which is fastened by set screws 75, Figs. l and 10, which adjustment regulates the throw of the feed dog50.

As the distance of pin 66 from center of driving shaft 23 i's increased, it will be seen that the wabbling leffect will be correspondingly increased As the only motionswhich this wabbling eccentric is called upon to` perform are a reciprocatory vertical, and a horizontal reciprocatory motion, the lateral throw of the eccentric is neutralized or rendered non-effective by the provision of duplicate studs 66 66 fast to the yoke 65 and free to slide in the ends of the bifurcated or bowed part 55. Thus the lever has a movement in a vertical plane imparted thereto from a shaft parallel therewith by the interposition of the wabbling eccentric device just above described-which movement of the lever is approximately a motion in which the longitudinal and vertical effects are properly alternated to give the required motions to the feed dog.

sov

The strap 65 of the eccentric carries one end of theV Aloop and binding the shuttle thread t in place.

vary the position oi the slide relatively to the actuat ing point 66, and in this manner controlling the working position of longitudinal movement of the feed dog 50 as will be readily understood.

Since the strap 65 imparts a vertical movement to the point 66, as well as a longitudinal movement, the link 55 is provided with an extension 55 in order to take advantage of this movement for operating the feed dog in a vertical plane and in the required manner; the end of the extension 55 being connected by a link 69 with the rearward extension 50 of the feed dog 50.

Means are provided whereby the working position or vertical movement of said feed dog may be varied so as to take a rmer or looser hold upon the under side of the material to be sewed, and for this reason, the link 69 is slotted as shown at 69/ to permit the dog 50 to be adjusted in a vertical plane without in any way altering the amount of vertical movement thereof, during its regular operation.

As previously stated, the machine is especially designed for an over lock stitch such as is for instance illustrated Yin Figs. 1l to 18, inclusive, of the drawings. In these figures, Fig. 11 shows the needle after it has passed the needle thread through the cloth and has just commenced on its return stroke, the shuttle being in position to carry the needle thread t through the loop L which is formed in the needle thread N by the needle during its backward stroke at the right hand side ofthe cloth joint line .l in Fig. 12 the needle thread N is shown as having its loop surrounding the shuttle; while in Fig. 13 the shuttle is illustrated as having passed through the loop L and the needle is just about to complete its return stroke thus drawing in said In Fig. 14, the needle has commenced its forward stroke, and the shuttle is about to pass through the loop L/ formed by the slacking of the thread 'n While in Fig. 15, the shuttle thread t has been drawn throughsaid loop L and the shuttle is about to finish its return stroke, thus leaving the shuttle thread t between the needle thread n and the upper surface of the cloth. In Fig. 16 the needle is shown in position corresponding substantially to that of Fig. 12, having left a loop on the right hand side ofthe clothjoint line to permit the shuttle thread to be carried therethrough, which condition is shown in Fig. 17, so that the stitch line as really completed, will have an appearance like that shown in Fig. 18, in which it is clearly shown that the shuttle thread is entirely on one side of the cloth and forms a zig-zag line between the loops formed in the needle thread at opposite sides of the cloth joint line.

It is, of course, obvious that the shuttle thread may be drawn through the cloth at the right hand of the cloth joint line provided the tension of the needle thread is sufficient to produce this result. I

Having described my invention, what l claim as new and desire to secure by Letters Patent is 1. The combination, with a table, a needle, and means for oscillating said needle relatively to said table, of a shuttle pointed at both ends, a shuttle-carrier having pins for loosely engaging said shuttley a stationary race having an L shaped cross section and for guiding said shuttle in a path to intersect the needle-path at both ends of its travel, and means for oscillating said shuttle-carrier.

2. The combination, with a table, a needle, and means for oscillating said needle relatively to, and on an axis above, said table, of a shuttle, pointed at both ends, a shuttle carrier having pins for loosely engaging said shuttle, means for oscillating said carrier on an axis offset from, and parallel with, said needle axis, and an arc shaped shuttle-race having an L shaped cross section, for guiding said shuttle in a path substantially concentric with the center of oscillation of the carrier.

Signed by me at Springfield, Massachusetts, in the presence of two subscribing witnesses.

CHARLES E. HADLEY.

Witnesses:

ANNIE V. LEAHY, WM, S. BELLOWS.

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