US1016900A - Take-up and thread-measurer for sewing-machines. - Google Patents

Description

G. s. sum-NAG & \m EvMYERS. TAKE-UP AND THREAD MEASUB-ER FDR SEWING MACHINES. APPLIOATION FILED NOV 19, 1909. 1,01 ,900, Patented Feb. 6, 1912.

s SHEETS-SHEET 1.

v G. s. SAVIGNAO & c. E. MYERS;

TAKE-UP AND THREAD MEASURER. FOR SEWING MAUHINES. APPLICATION FILED HOVQIQ, 1909. 1,016,900. I I Patented Feb. '6, 1912.

3 SHEETS-SHEET 2.

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G. s. $AVIGNAO & c. MYERS. TAKEUP AND THREAD MEASURBR FOR SEWING MACHINES. APPLICATION FILED NOV. 19, 1909.

q 1,016,900. Patented Feb. 6, 1912.

3 SHEETS-SHEET 3.

' St Louis and csonen s. SAVIGNAC Ann was "Lotus, MISSOURI; ASSIGNORS 'ro WALTER G. BATTLE, oYnos E.ZLARK, ,NI mamas w, FUQUA, ALL or sr. Louis,

MISSOURI.

To all whom. it may concrn;

Be it known that we, GEORGE S. SAVIGNAC and CHARLES E. MYERS, both citizens of the United States andresidents of the city of State of Missouri, have invvented a certain new-and useful Improvementin Take-Ups and Thread-Measurers for Sewing-Machines, of which"the following is a specification.

The subject matter of the present inventionis divided out of an application for Letters Patent for an improvement insewing machines, Serial No. 501,462,- filed by us on-June 1 11909.

' The presen "invention relates to take-ups and thread-measuring devices for sewing machines and more pa icularly I .those use for sewing leather and like.

The principal objects of the invention are to produce a simple and efifective' device which will readily take up the thread to set or complete the stitch, to provide for adjusting said device to measure ofi the proper amount of thread according to the length (if. stitch and thickness of the work,'.and to at tain certain other advantages hereinafter I more fully appearing.

The invention consists :in the parts and in the arrangements and combinations of partshereinafter described and claimed.

'In the" accompanying drawings which {oi-m part of this specification and wherein ike symbols refer to like parts wherever they occur, Figure 1 is a front elevation of a sewing machine embodying our invention; J

. Fig. 2 is a side elevation of aportio n of the sewing machine showing the position of the take up arm at the two limits (if its move- :ment; and, Fig. 3 is a view similar to Fig,

l t "'The machine comprises a suitable base 1 which may be mountedi-on any suitable table ,2 showin the take-up in the act of ihahrea to set the stitch.

:1 e general construction and arrangemiiht o the sewing machine is; fully set flirth in the application for Letters Patent, Se-rial No. 501,462, hereinbefore referred to.-

or. stand, 'not'shown. On-the hash Lisa suit-. ablejstandard 2 the lo ve gp ort-ion of sienna "axiom-malted a1 drains shaf 3- 0n d1eene of: the shaft is a pinion illThis pinionmeshes with a: agheel 5 'is'mounte Specification of Letters Patent.

Original application filedJnne 11, 1909, Serial No. 501,462. Divided and this 19, 1909. Serial No; 528,943.

pulling I .r ear'p0rt10n of the housing 1S3. segment gear gear-wheelfi. The gearupon-a countershg ft' Patient-ed Fpb. e, 1912. application filed November whicli'is journaled in the standard 2 above the driving shaf 1 Fixedly secured to the geap wheel 5 or on the shaft 6 is a cam disk or member 7. This -cam disk or member 7 is provided in its front face with two continuous cam grooves 8, 9, whose functions will hereinafter more fully' appear.

Mounted on the base 1 close to the fioiit face of the cam disk 7 is a vertically .dis posed which 18 slidabl mounted a block or, member 11. This b ock is' -preferablyprovided -with grooves in its side edges WllICh-Slidfiblj.

uide frame or column guides iQ on fit vertically disposed ribs 12 provided there for on the inner side face of the guidejranie or COHIIDII guides 10. The upper-fiends oi the column uides are connected' bv' a cross bar or memger 13 which is secilre'd by bolts or other suitable securing devices 14. Projecting rearwardly from the block 11 is a stud or roller 15 which -is-ada ;otedv to fit in the cam groove 8. of the-disk 7, whereby a vertically reciprocating motion is' imparted to said block when the cam disk 7 is rotated.

Mounted on the forward-portion, of the base 1 is a Standard 16 which is preferably stiffened by suitable marginal and "inter mediateribs or flanges 17, The upper por tion of the standard 16 is formed into a circular easing or housing 18 having flattened side walls; and the housing is prefmblydivided, or one of its side walls is made re movable so that access inay be conveniently gained to the interior of the housing.

Journaled -t1 'a nsversely of the housing is a rock-sha.fti1ti 'onwhich is fixedly mounted a-segment.vgeai' :20 which is provided with two oppositely disposed segmental extensions or wings 21, 22. F

-Journaled on a transverseis'l aft 23 in the @24; which meshes with said segment gear 20. The segment gear '24:,is provided with a lever-extension o rock arm 25 which is pivotally connecte to one end ota link or-.bar 26 whose opposite end is. pivotally mounted between-a pair of cars or lugs located on the front face of the vertically reciprocating member 11, whereby, when said membi is rcciprocated vertically, the segment gear 20 and the roclcshaft-IQ u on which it is fixed, are rocked or oscillat' The upper front. portion of the housing 18 is cut away to provide a space fora work. table or shelf. The work table or shelf preferably comprises a fiat plate 28-having a down turned portion 29 which is secured by screws or by any other desirable means to the side Wall of the housingi This plate '28, is provided with a laterally" elongated slot, not shown needle work. 1 0

through which the awl and An awl 31 ispivotally mounted on the seg,

"- mental extension 21 of the segment gear TheaWl-is arranged to cotiperate with cer-' 'tain devices within the casing or housing 18 so'as to be shifted or oscillated laterally on its pivot whenit 1s reciprocated' by the oscillation of the segment gear 20. A'needle 32 isi'nouhted on the segmental-extension 22 of Y. the'segment gearQO. Both the needle and the awl are curved on the same radius from the center of the rock-shaft 19; "Thejneedle provided-with an eye near its p'binted ieii'a through which the needle'thread A isfpassed' s that when the needle moves through the work, carries a bight'or loop of the thread theretlirough; 1 i cIn-the operation of the machine, the awl upon' its upwar l stroke'pierces or punctures V the workand during this'upward'move'nient of the awl, it is shiftedlaterally; thereby feeding thel work a. predetermined distance into position to bring the puncture 'in'the work into 'the path of the needle. As the awl backs out of the work, upon its reverse i or downward stroke, the needle; follows through the 'puncture- This operation is successively repeated for the succeeding stitches. As above stated, the needle 32 carries a 100 of the thread A through the work. W en the needle starts to back-outof the work, the loop'is opened. At the in; stant the loop is opened, a locking loop carrier 33 carrles'a loop of the locking loop thread B through the first mentioned needle thread loop. This locking loop carrier is arranged to reciprocate horizontally and r is actuated to quickly return to normal pOSP tion and thereby leaving the locking 100 in the needle loop. Immediately after'this actuation, the take up device is actuated to pull the needle thread A and thereby inter-- lock'the two loops and draw the same into the Work to set or complete the stitch. 'As

'shown ,in the dra-wing, the lockingloop carrier is actuated by an arm 34 on a rock shaft- 35 having a second arm 36 thereon. The

' arm is provided with a stud or roller 37 which fits in the groove 9 in the cam disk' 7 whereby an intermittent rocking motion is imparted to the shaft and the arms thereon.

The take up dev 'ice for the needle thread comprises an arm 38 which is fixed tightly 'on t side of the housing: This arm 38 is set with 'respect to the segmental extensions 21, 2:2,

s end portion'of the rock shaft- 19 out-- of-the segment gear 20 so it is in its :fih" .pi 9 ;i cured to'tlie'bracketextension byascrew or lowermost position when the needleand the awlare in their-uppermost positions. The arm 38 is provided near its outer end' with a circular portion 39 having a curved marginal flange of rib 40on its outer side. The

inner side of the'fiange or rib 40 is curved '46 on ;the cam disk 42. The free end of the lever arm 44 is for convenience turned at an an le as at 47 and it is roundedor point ed at'itsijend so as to cotiperate with a resilicut latoh'- n cmber 48. This latch memberF-is mounted foilan arcuate extension 49 of. .a bracket'fifliwhichis mounted on the top of the casing 8- The brack'etoextension 49;;jis

preferably suspended laterally. fromL'the:

casing" '30- asf to in convenient po'sithmti etiothe =a'r1n{ 2 8. 'T0n the free end of the latchijn ieiiiber 48 is rovided a lug '51 'o'rlbeve edside cam face 51 r= grooved top cam face 52. end-of the latch member is serivet 53and it-is additionally supportedby 'a pin 4 uponwhichitsintermediate free port-ionslidably rests.

face 5 1 on the lug-.51"on the end of the re silient latch member 48, thereby pressing "said'niemberinwa dlyuntil said lever arm has iiass'edF free o fg'the lug. NVhen the arm- 38 swings downwardly on its return stroke, the end portion 47 of the lever-arm 44 contacts with and rides over the.groovedcam portion 52 of"thelatch member, whereby said lever arm 44 is shifted and, owing to its slot-and pinbonnection with the cam disk 42,- the disk is turned until its high side con-v tacts with the innerfac-e of the curved iii) 40, as shownin Fig. 3. As the arm 38 On Assuming the partsjust described tobc in the position shown in Fig. 2; when the arm 38 is swung upwardly, the endportion '47'of the lever arm 44 rides over the cam tinues its downwardmovement a projecti n, '55fon' the cam disk '42 contacts with a ro eo- '{tion 56 on the'bracket extension 49 w every:

the cam disk 42 is -turned and restoredgito inoperative position, the lever 44', of course,- being also restored therewith to thG POSItIOII shown'in Fig, 2. The, projection 56 is prefierably'provided on a slotted plate 57 which 7 is secured in adjusted position on the bracket extension 49 a screw 68 or other suitable securing device. By adjusting the projection 56 to different positions periphorally of the arcuate extension 49, the cam v cam' d sk binds the thrald'against'the rib noigeoo disk 42-.maybe made to move out of contact with the rib 40 at different intervals from the tripping lu 51 on the end .of the latch memberl4 8,' an thereby the amount of the needle'thread taken up in the stitch ma he varied, as hereinafter more fully descri ed. V In order to releasably, hold the camdisk .-'42 ,in-Jopen position, as shown in Fi .2, a s ring-latchorretainer 59is p'r-ovi ed on 1 t e 'circular portion 39of the take-up arm 38. This retainer "preferably comprises a i curved leaf-spring which is provided with a V-shaped end portion which is ada ted to iitlin front, of a shoulder'60 provide on the cam disk 42 adjacent to the projection 55.

By'thisarrangement, theaugular end portion of the spring willride up over the shoulder when the cam disk is -forcibly turned and it will snap back into placeiniront of the shoulder when the cam disk is .qrestorcd to open position, yet the resiliency ofthe sprin is sufficient to hold the disk gfagainst acci'ental movement.

' In the operation of thethread-measuringand takeup device just described, the needle thread is takedirom' some conveniently arranged source of supply, preferably, from spool holder 61- mounted [or supported beheath the base 1 of the machine. The threadiscarried through an opening 62 in the base andthence through an ordinary tension device 63which may be conveniently mounted I on the base or gu de-frame 1.0, as shown. yIt is-then carried under a suitable guide piece or clip 64 on the lower end portion of the rib on the take up arm 3 8, thence between fth'e-innerside of said rib and the cam disk 42, thence through a slitted guide-opening 65in the upper end portion'of the rib 40, thence over a grooved idler or pulley 66 on the-top of the casing 18, and thence over the outer side of .the curved needle 32 and through the eye of .theneedle. Ibis-preferable, however, to 'pass the thread through a waxlng or treating device 67 whichis ref .-.era bly located between the idler 66 an the needle 32 as will be more fully set forth in another application to be divided out of our application, Serial-No. 501,462, hereinbefore set'f0'rth. Whenthe needle 32 moves 'downwardly, it carries-- a bight or loop of the threadA with it. The end of the thread A or portion thereof which is secured in the preceding. stitch is, of course, tightly held, 55 and,- therefore, the thread from the supply spool is pulled. through the tension, device and the take up; device and over the idler or pulley. It is-meted, also, that the take up arm moves upwardly'simultaneously with the downward movement of the needle. Thetripping-or latch member-is so located that immediately, or shortly after the take l p-arm starts 0, its return or downward stroke the lever-armfl is'actuated; and the,

40 on the take up arm. The thread is then pulled until the cam disk 42 is released from the thread by the projection 55 on said disk contacting with. the rojection 56 on the bracket extension"49.' t is during this pulling action on. the thread by said take up dois tightened or set. The lengthof the thread used to form and set the stitch is controlled by the distance" between the projection 56 and the tripping lug 51 on the member 48; and as hereinbeforetstated, said projection said grooved cam 52 inorder to measure the proper length of thread to suit different thicknesses of work orlen hs of stitches. The locking-loop thread. is preferably supplied from a spool mounted on a holder 68. located convenlentl The supply of. threa .-waxing or. treating the base 1. A supporting bracket 69 is base: It has two oppositely disposed arms 70,71, on which thespool holders 6-1, 68 are respectivelymounted. It also has a depending portion 72 to which the sup ly'tank or reservoir 73 is secured. The t read .B is

manner. similar to the thread A. It is thence passed through a guide member 74 dependmg within a receptacle 75 which is adapted for the-thread. I p p Obviously, the, device admits of considerable modi cation without departing from our invention. TherefOreywedo not wish arrangement. shown.

What we claim as our nvent on and desire to secure by Lette s Patent 18 with a stitch-forming mechanism, ofa combined thread'measur ngand take-up device comprising a mck-arm, aIT thread-guide thereon, 1 an eccentric disk *pivotally mounted on means for automatically throwing said eccentric disk into effective positionwhile the rockmg-arm-is movnigin the direction to comprising a lev er on therock arm and a cooperatln -tr.1'pp 1ng device on a stationary part of t e mach-me,- and means for throw- -mg said eccentric disk"into "inefi'ective position at a predeterminedtimeidhring the pull ing stroke ofsaid rocking-arm.

- 2. In a sewing machine, theicombination .bined thread-measuring; and take-u device 56 may be adjusted at will with relation topassed up through a hole inthe base 1 in a.

to be limited to the specific construction and 1. In a sewingmachine, the; combination v pull the thread andset the stitch, said means comprising a rock-arm, a'thread gui e there ,on,"a disk pivotally mounted on said rocks arm and having 'a'peripheral cam face in 00- 130 vice that the stitch hereinbefore described beneaththe base 1.

material is also preferably located beneath therefore, s'ecuredto the tinder side of-the to containgthe waxing or treating material said rock-arm'with its peripheral-face in 00- operative relation to said thread-guide and adapted to clamp the. threadgtherebetween,

with a stitch-forming'mechanism, of a comdisk atdi erent distances from said first mentioned actuating means for the disk, whereby the length of thread used in the Y respective stitches may be varied.

, ing'sa-id eccentric disk into effective posi-- 3. -In a sewin machine, the combination with a stitch orming mechanism, ofa thread-ineasuringand take-up device comprising an oscillatory arm, atthread-guide thereon, a curved flange located on said oscillatory arm in coiiperative relation tosaid thread-guide, an eccentric disk pivotally' mounted on said-oscillatory arm and adapted to clamp the thread against the inner side of said'curved flange, means'for throw- .tion when said oscillator arm moves in the direction tom-pull the t read and set the stitch, and means for moving said cam-into im-fiective position at a predetermined time during the pulling stroke of said oscillatory arm. z

4. In a sewin machine. .the combination with a st'itchorniing mechanism, of a thread-measuring and take-up device comprising an oscillatory arm. a thread-guide thereon, a member movably mounted on said arm in coiiperative relation to said ..thread-guide and adapted' to clutch the thread themin, a lever arm pivotally mounted on said oscillatory arm and operativelv connected to said movable member, a latch member in the path of said lever arm adapted to actuated-he same to 'iositively move v during the pulling stroke of said oscillatory arm. v

5. A thread-measuring and take-up device comprising an oscillatory arm having a curved flange, thereon which is provided said flange, a' le'ver-ar with thread g'll-ides at its opposite ends, a

'cam pivotally mounted on said arm in co- :gerative-relation to said flange and adaptto clutch the thread between the ends of pivotally fniounted d operatively con on said oscillatory arm for actuating said .llectd to said cam,

lever-arm to throw cam into effective sition when said oscillatory arm moves in the direction to' pull the thread, and means for moving said cam into inefi'ective' position at a predetermined time during the pulling stroke of said oscillatory arm.

6. A thread-measuring and take-up device comprising an oscillatory" arm having a curved flange thereon which provided with thread-guides at its opposite ends, a "c'am pivotally mounted on said arm 1n oo- .75 rative relation to said flange and adapt to clutchthe-thread between the ends of said flange, a lever-arm pivotally mounted on said oscillatory arm and operatively connected to said cam, a latch" member .mounted in the path of the'free end of said leverarm and ada ted to actuate said lever-arm when the osci latory arm moves inone direction, whereby said, cam is moved into effective position, and a tripping device arranged in the path of a projection on said cam, whereby said cam is moved into ineffective position at a predetermined time during the stroke of the oscillatory arm.

7. A thread-measuring and take-11p device comprising an oscillatory arm having a curved flan e thereon which is provided with thread-guid es at its opposite ends, a cam pivotally'mounted on said oscillatory arm and operatively connected to said cam, an armatebracket arranged in coiiperative relation to said oscillatory arm, a spring latch member mounted on said bracket in-the path of the freeend of said lever-armandadapted to actuate said lever-arm when the oscil- 1m,

latory' arnimoves in one direction, whereby said cam is moved into effective position, and a member adjustably mounted on said bracket and having a projection arranged in the path of a projection on said earn," whereby said cam is moved into ineffective position at a predetermined time during the stroke'of the oscillatory arm. r

8. A Unread-measuring andtake-up device comprising an ose'illatoryhrm having a threadsguld'e thereon, 'a clutch member pivotally monntedon said oscillatory arm in codperative relation tosaid threadide and adapted to clutch the thread therein, an actuating member movably mounted on said oscillatory arm and operatively connected with said pivotal clutch member, a resilient latch mem er arranged to engage said actuating member when the oscillatory arm moves inone direction whereby the clutch member is moved'to engage the thread in said thread-guide, an. arcuate su porting bracket and a tripping device adjnstably mounted on said arcuate supporting bracket so as to move said clutch member from the thread at a predetermined time.

9. A thread-measuring and taken device comprising an oscillatory arm having a thread-guide thereon, a. cam pivotally'mounted on-saidoscillatory arm in ootip'erative reota l cam, .an arcuate supporting bracket mounted adjacent to said oscillatory arm concentric with the pivot thereof, a resilient latch member arranged on said, arcuate sup 'porting bracket to engage said actuating member when said oscillatory arm moves in one dlrectlon whereby the cam is mcvedto engage the thread in said thread-guide, and:

a tripping device-adjustably mounted on said arcuate supp'erting bracket with respect to Saidlatch member and adaptedt c-"e'ngage said cam andlrelease the 'samejfrom the thread in said thread-guide atdifirent predetermined intervals during the stroke of oscillatory arm.

said

testimony whereof We; have signed our names. to thisspecification inthe presence l of tyilo subscribing witnesses.

GEORGE s. SAVIGNAG;

,- CHARLES E. -MYERS.

. Witnesses N. N. MITCHELL,-

Gr. A PENNINGTON.

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