US1414352A - Take up - Google Patents

Description

G. S. G'ATCHELL'.

TAKE-UP.

APPLICATION F ILED MAY 23, 1 919.

Patented May 2, 1922 2 SHEETS-SHEET l- 'ATTORNEY um'reo sir -.;on the looper-thread.

. "panying drawings 10' GEORGE GATCHELL, .OF ROSELLE'PARK,

TAKE UP.

Application filed May 23, 1919., Serial No. 299328. 1 e P To all whom it may concern: I

.Be it known that I, GEORGE S. GAT HEL a citizen of the United States, residing at Roselle Park, in the county ofUnion and State of New Jersey, have invented certain.

new and useful Improvements in Take -Ups, of which the following is a specification, reference being had therein to the accom- Theiobject of thepresent invention is to provide a take-up-for accomplishing the .aboye stated result, which wilLbe simple in p to the toplof. the n achinehead by a set-screw 19 cnteringa slot, 18 and said shank carries construction and economical in manufacture.

- Inthe drawings, Fig. l is a frontend view I of a machine. with parts broken awayshowing the position of the take-up as the looper is about to shed its first loop. Fig. 2 is atop; plan view of the take-up. Fig. 3 is a view.

, of the take-up from the side opposite to Fig.

1, with the. cast-ofi' arms about to-shift the 1 thread from a horizontal portion of atakeup slot to an inclined portion. Fig. 4 is an elevation showing the take-up elements in endview with the take-up at its highest point. Fig. 5 is a view of the take-up plate detached and showing it as arranged .for three threads. Fig; 6 is a detail sectional. view showing the position of one of the threads in the take-up when the-looper is shedding the loop of said. thread as shown in Fig.1. Fig. 7 is a detail sectional view showing the position of the second thread in the take-up as its thread-loop is being shed by the looper. p j

Referring to the drawings, 1 represents the head of a sewing machine bracket-arm, 2 the needle-bar, 3 the needles, ithe pressere bar and 5 the presser-foot. Awork-arm 6 arm is a looper 7 cooperatingwith the needles is located below the head and in 'said 'wor k- Specification of Letters Patent. 2 Patented 3. Any suitable means ,may be provided for Tr Yer IE.

new JERSEY, ASSIGNOR To THE smenn- MANUFACTURING oomrelvxfa CORPORATION or NEW JERSEY.-

actuating the stitch forming mechanism. Secured to the upper end of the needle-bar stance two innumber. .The aperture 9 for the thread 6 whose needle-loop is .first enshaped slot having an inclined portion '10? extending above and below the eyelet 9,. and

May 2, 1922.

isa take-up plate 8. This plate is provided, with thread-apertures, in the present ina horizontal portion 10 at its lowerend i i forming an acute angle withthe inclined portion anddefining 'a'horizontal shoulder 10%;. A'horizontal plate or arm 11has a downwardly turned shank 12. adj ustably; se

cured to the side of the :machinehead by: the set-screw, 13 entering slotfl At 'its.free end, the arm 11' is forked to provide .arms '15; e itending lon each, side of "the path of, the take-up plate adjacent theeyelet 9,;-.thef eX.-,

tremitiesof the arms 15 being upturned at j 16 to retain thethreadi ,A horizontally di'sposed shank .17, (Fig. 3 is'zadj ustably secured a pair of-castpfl arins20 disposedlon ,opposite sides o fthe pathof thetake-up plate adjacent .theapertur'e 10. Said arnis'have ine clined edges 21 whichact-at the proper 'ti'me to cast off the thread from the-shoulde'1'"10' slot :The standard. is forked-or. slotted transversely of the path of tli e'needl'ethreads to form arms 25 and 26. T he back portions of said arms are extended upwardly at 27, 28, to form guides for as'prmg-wue, slack-thread controller 29, the free end of,

which is movable up. and down in the space between the arms 25 'and26 and their extensions 27 and 28. The otherendof the wire is coiled around a screw 30secured-to an arm 31 adjustably mounted on themachine head by a. set-screw-32 entering a slot 33.

The. tension of the spring-arm maybe varied by securing .the coiled end. ofthe eonl e' 2 1 h r he 1 arm 31. The extent of downward movement of, the free end of the controller 29,

is limited by an adjustable stop comprising a slotted plate secured to the extension 28 by a screw 36 and having an arm 37 at its lower end projecting across the space" the extension 27 and an extension 41, which latter isbent forwardly at upper end at 12 and orerhan s'the part 40. g V

Y standard 43 projects upwardly from the inachiiiehead, and pivoted atits upper end is a rookdever 44, one end of whiclrcarries pull-off and slack-thread controlling arms 7 45 and 4-6,'while the other end ofthe lever is conneleted link 47 to the pres'serbar in and oorr'esp "a master well know-"n forming-no part of the invention. 7 The jslaek-thread centre-L ling arms actin theprdihary mantra vary the amountof thread pulledofi' by the take up, the press'er-foot rising and fallin'g'in i a'ce'oi'dfance with the thickness of the tnaterial ondinglyl'ow'ering or raising the I thread-Controlling arms V I V V v If more than two needles are used addistun aag' -shapea i'os 1 0' are presti e in posed at 'suooessiv'ely lQ'werelevzttiohs', is obvious the inclined portions of the slots may be turned in the reverse direction if desired, and all the threads may"be conv the' take-up plate as shown i'n Fig. 5, the horizontal portions ofs'aid slots being dis- It trolled bythe angle-shaped slots,if desired, instead of using the eyelet 9 for the la'st one.

" In operation, when the needles are all the way up the needle-bar and take-up are in the position shown in Fig. 4, with the thread a -in the horizontal slot portion 10 ,the looper is in extreme forward position and encircled spring wire slaclothread controller is pulled up. As the needles and take-up start down, the looper. starts rearwardly and the spring wire 29 takes up v the slack in the needleth readf The needles enter the well known triangles formed by the looper, itsthread and the previous needle-loops. Before the needles reach their lowest position, the previous needle-loop or thread a is shed by the leeper, but just previous to its shedding the shoulder 10 formed by the upp'erwall of the horizontal slot portion 10? of thetake-up passes below the plane of the thread a leadingto the tension at the rear of the overhanging small-d has placed said thread additionaltension (see Fig. Hence Ye the 9 99f hr ad a i he i s a 9 gawn up into theworkfand'ojut of the way. I

n fu rthi" retraction ofthe loop'er the previous needle-loop of thread I) is shed and at this time the eyelet 9 of the take-up passes below the plane of the thread-guiding arms 15 at each side of it, placing the thread 6 under tension and quickly drawing up the loop thus shed (see Fig. 7 Shortly after the loop of thread I) is drawn up the takeup plate has moved down to the position shown in Fig. 3 and the inclined edges 21 of arms 20 Castofl' the thread 0; from the shoulder 10. When the looper reaches its extreme rearward position the needles are all the way down and the doubling of the threads along the needles has drawn up the form to produce; the needle -loops for entry As the take-up plate rises t me looper. with the needle-bar the thread a slips down as inclined 81 6i? portionrot and into the o v horizontal portien" 10 again, the take-hp eontinuesto rise, and'suocessively tightens the needle-threads around the advancin meter, and the take-up parts again assume the position shown in Fig. 4:.

invention, what I 01am 'h'ei-ein is;

1. fIn a sewing machine, a ino-vabletake- 1115 member haying an extended threada'perture therein, thread-guides "cooperating with said take-up member and east-(sir ine'a'ns' ooactiiig with said aperturet'o east on the Having time set forth the nature of the threadffr'oin one partcof the aperture to an-- other as the take-hp action i's'completed; I 1

2. ,In as'e'win'g machine, stitch foimii1g m'efeha-nisin including anee'dle and a looper, 'a n'eedle-thread take-hp having a threadaperture with "inclined portions, 1011's of which 'ha s a wall adapted to instantly take up a needle-loop asit is shed from the lo'ope'r, and meaiis eoacting with said wall to shift I f the needle-thread to the other portion of the by the two prevlousneedle-loops, and the aperture after the'loop hasbeen taken up. 3. In a sewing machlne, stltch-fornung mechanism ln'cludlng a needle and a l'ooper,

a needle-thread take-up movable across the path of the thread and having a thread-slot with differently directed portions, one of which has a wall at substantially right,

angles to the path of the thread and inclined to shift the latter into the second person,

anda second portion having a, wall transverse to the path of thethread to take up the same and means for. shifting the thread from the second portion to the first as the take-up action is completed. V

I it. In a sewi'n': machine, stitch-forming me'oh'a'nism incl a needle and a looper, andt ke-up inane for the assarethreaa comprising a relatively movable threz'tfl-v uide and take-up said hair up havin a thraaapertiire, it passes of whose wall acts as a take-up, and cast-off means for shifting the thread away from said wall as the take-up action is completed.

5. In a sewing machine, stitch-forming mechanism including a needle and a looper, a needle-thread take-up comprising a movable member having an angle-shaped thread aperture therein to quickly draw up the needle-loop as it is shed from the looper, and stationary members coactin with said aperture to castofl the thread irom one portion of said aperture to another after it is drawn up.

6. In a sewing machine, a movable take-up member having an extendedthread-aperture therein formed with a thread-detaining portion, thread-guides cooperating with said thread-detaining portion and a cast-off co-" acting with said aperture to cast off the thread from the detaining portion of the. portion as the take-up aperture to another action is completed 7. In-a sewing machine, a head, multineedle single-looper stitch-forming mechanism including a plurality of needles, a needle-bar and a single looper, and coacting take-up devices carried by the needle-bar and head and including means having a plural-*' ,ity of difl'crently shaped apertures for successively taking up the needle-thread loops immediately as they are shed by the looper.

8. The combination with stitch-forming mechanism including a reciprocating needlebar carrying a needle, ofneedle-thread takeup means including a thread-engaging device mounted on the needle-bar and having a shoulder adapted to engage and take up the needle-thread, and a cast-off for dislodging the thread from said shoulder before the needle-bar completes its stroke.

9. In a sewing machine, in combination, a reciprocating needle-bar carrying a'needle, a looper cooperating with said needle to form stitches, a thread-engaging device plurality of thread apertures therein definportion after thethr'eads are drawn up,

ing shoulders at difierent elevations adapted to successively take up the needle-loops as they are shed by the looper, and means for successively shifting the respective threads from one of said portions to another astheir take-u action is completed.

11. n a sewing machine, stitch-forming -mechanism including a plurality of needles and a single looper cooperatingthere'with to form stitches, a member having thread guiding openings arranged in a plane, take-up means movable across the path of the threads and having a pluralityof thread-apertures therein, each'aperture having angularly related take-up and idle portions, the take-up portions being disposed successively at different distances from the plane of the thread guiding openings, and means for shifting the threads to the idle portions ofthe apertures as their take-up actionis completed.

- 12. In asewing'm'a'chine, stitch-forming mechanism including a needle-bar, a" plu rality of needles-and a looper, a stationary thread-guide having thread "apertures -therein, a cooperating take-up member carried by v the needle-barf and provided with threadapertures, each of said latter apertures having a horizontal take-up portion and an inclined idle portion leading therefrom, and I stationary, cast-olf means for shifting the, threadsfrom the take-up portion to the idle 1 13-. In a sewing machine," stitch-forming mechanism including; a plurality of needles and a looper, and means for successively taking'up the needle-threads as they are shed by the looper,.said means comprising :relai a seriesof'thread-guiding apertures therein, each aperture of one ofsaid series hav ng portions disposed at" an. angle toeach other, and cast-oftmeans for shifting the threads from one of said portions to the other.

14. A sewing machine having, in combination, stitch-forming mechanism including a needle-bar carrying a plurality of needles, a single looper cooperating with said needles to' form stitches, multiple thread take-up means mounted on the needle-bar andincluding a take-up shoulder for the thread of the first needle-thread loop shed by the looper on its retracting stroke, and a cast-ofl for dislodging the. needle-thread from said shoulder after saidneedle-thread loop is tightened.

In testimony whereof, I have signed my name to this specificatio i GEORGE s. GATGHELII.

tively movable-elements, each of vvhich has Y i ioo

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