US1995078A - Multiple needle sewing machine - Google Patents

Description

March 19, 1935. Cir? RUBEL 1,995,078

MULTIPLE NEEDLE SEWING MACHINE Filed July 24, 1953 4 Sheets-Sheet 1 March 19, 1935. v c. F. RUBEL 1,995,078

MULTIPLE NEEDLE SEWING MACHINE 7 Filed July 24, 1933 4 Sheets-Sheet 2 w N N lllll March 19, 1935. c. F. RUBEL 1,995,078

' MULTIPLE NEEDLE SEWING MACHINE Filed July 24, 1935 4 Sheets-Sheet 3 March 19, 1935. c. F. RUBEL MULTIPLE NEEDLE SEWING MACHINE Filed July 24, 1933 4 Sheets-Sheet 4 r I/ m Patented Mar. 19, 1935 UN TED-STATES PATENT OFFICE MULTIPLE NEEIEZZSZZEZIING MAonI J I Charles F. Rubel, Chicago, Ill., assignor to Union Special Machine Company, Chicago, Ill.,' a corporation of Illinois Application July 24,1933, Serial No. 682,016

3 Claims. (01. 112-166) The invention relates to new and useful improperly spaced to cooperate with theloopers provements in a multiple needle sewing machine, in a predetermined settingthereof. .Thesespreadandmore particularly toa machine of this type er fingers are all integral with acommon shank wherein a thread carrying looper cooperates formed from the same piece of metal. The metal with each needle for making independent lines plate is shaped to provide the spreaders by the -5 of stitching. manufacturer of the machine. This metal plate An object ofthe invention is to provide a mais attached to a support which is mounted in the chine of the above type having athread carrymachine for movement in a direction at right ing looper moving in the line of feed, with a angles to the line of feed.

3 spreader for each looper, which spreaders are It is thought that the invention will be better all formed from a single piece of metal with a understood by a detail description of the machine common connecting shank, so that said spreaders illustrated in the drawings. The machine shown will always remain in the same set position relais a multiple needle machine which includes four tive toeach other as that determined by the needles 1, 2, 3 and 4. These needles are all car'- manufacturer of the machine. ried 'by a needlebar 5 which is reciprocated by 15' In the drawingsaneedle lever 6 connected thereto through a Figure 1 is a view partlyin vertical section and link 7. Coope at h e needle eneath partly in front elevation showing a portion of the work support is a threadlcarrying looper 8. the machine embodying the improvement; Cooperating with the needles'3, 4 and 5,-respec- Fig. 2 is a plan View of the parts beneaththe tively, are t d c y loopers andyll- 20 work support; I These thread carrying loopers are mounted on a Fig. 3'is a view partly in vertical section along ca er 12 W h in tu is Supported y a} af the line of feed and in end elevation; c 13. The carrier is attached to the shaft so that Fig. 4 is a perspective View of they spreaders it can be released therefrom and movedlaterally and the supporting means therefor; for threading purposes. The shaft 13 is moved 25 7 Fig. 5 is a View showing the relative position endwise to give to the loopers a needle'avoiding of the Spreaders andthe looperswhen the loopers v me t by link 14 Which is pivoted ball areat the forward ends of their stroke; V stud carried by the end of the shaft. This link Fig. 6 is a view showing the relative position 14 is'attached to the arm 15 carried by a sleeve of the loopers, Spreaders and needles .whe'nthe 16 mounted for oscillation n a ub shaf 17- loopers are at the rear ends oftheir stroke; Said sleeve isprovided with an arm 18 which is Fig. '7 is a detail showing one 'of 'the loopers connected to an eccentric strap 19 cooperating and its cooperating spreader, with the looper-at with an eccentric on. the main shaft 20. The the'forward end'of' its stroke and the spreader shaft 13 is oscillated fo vi g the loopers operating t h ld th thr ad triangle n for into and out of the needle thread loops byjmeans 35 the point of the needle toenter, and J 1 ofa link'21: which is connected to'fa ball stud Fig.8 is a plan view ofjthe parts shown in carried'atthe lower end of an arm 22 fixed to Fig. 7; the shaft 13. The other end ofthelink 21 is,

The invention has to do with a multiple needle attached to a crank 23 carried by the main actu-. machine which includes a plurality of needles ating shaft 20. This looper operating mechanism 40 arranged in a line at right angles to the line of and the means whereby the looper carrier may, feed. Cooperating withleach needle is a thread. be released from the shaft per se form no part carrying looper, which moves in a plane parallel of the present invention, but are shown, described with the line of feed and in a direction opposed and claimed in the patent granted J ames' R. Mofto the feed'as it entersithe needle thread loop. fatt and Albert H. Simmons, January 10, 1922', Associated with each looperis a spreader which No. 1,40 V f moves across the upper face'of the looper and .Thermaterial is fed acrossthe work support engages thelooper thread so as to carry it away by a feed dog24 carried by a feed bar.25. The from the body of the lo0per,thus opening the feedbar is raised and lowered by aneccen'tric present invention has to do with the construction bar is moved back and forth by a feedrockerf of the spreaders in this type'of machine. The 27 which is provided with an arm 28 connected Spreaders are all formed from the same piece of to an eccentricstrap 29 cooperating with an ec- W metal. A metal plate is machined and shaped centric attached to and rotating with the .main

thread trianglefor the needle to enter. The 26 on the main actuating shaft 20 "-1The feed 0' so as to provide projecting fingers which are actuating shaft 20. As shown in thedr'awin'gs', 5

the needles 1 and 2 are arranged comparatively close together. The needles 3 and 4 are also arranged close together. These pairs are widely spaced. There is a feed dog 24 associated with each pair of needles. The needles and the loopers and the feed dogs are capable of adjustment at right angles to the line of feed, so that a machine canbe changed from one gauge to another. The loopers are so disposed that they move in a plane substantially parallelwith the line of feed and in a directionopposed to the feed as they enter the needle thread loops.

Associated with the looper 8 is'a spreader finger 30. There are also spreader fingers 31, 32 and 33 associated, respectively, with the loopers 9, 10 and 11. and 33 are all formed as an integral part of a plate which is shaped so as to provide a common shank 34 for all of the spreaders. The plate is made of steel and is shaped so as toprovide these. projectingfingers properly spaced to cooperate with the loopers in} a predetermined setting thereoffor a certain predetermined needle gauge. The plate forming the supporting shank and the spreaders is constructed by the manufacturer of the machine, and the spreaders are properly dimensioned as has already been noted for use on a certain setting of the loopers. These spreadersare.non-adjustable. The shank portion 34 carrying the spreaders is secured to a carrier '35 by suitable screws 36, 36. The carrier 35 is mounted on a shaft3'7 and is secured thereto by set screws 33, 38. The shaft37 is mounted forendwise'movement in supporting brackets 39 and 40. Fixed to the shaft 37 is an arm l'which is provided with a fork 42 at its lower end adapted tov straddle a pin 43 carried by the bracket 39, (see Fig. 1). The purpose of this. arm and pin is to permitjthe shaft to move endwise, but to prevent any oscillation of the shaft. 1

The shaft is provided with a collar 44 carrying an arm 45 to which is attached a link 46. This link at itsother end is attached to a ball stud 47 carriedby the sleeve 16. As the sleeve 16 oscillates, it not only moves the looperlaterally, but it also moves this'shaft 37 endwise', and thus imparts a lateral movement to the spreaders. When the looper is moved to the right as viewed in Figures 5 and 6, the spreaders are moved to the left. After the loopers have moved forward into the needle thread loops and the needles have been retracted, then the loopers are given'the usual lateral needle avoiding movement, which is a movement'to the right as viewed in Figures 5 and 6. At the same time, thespreader is moved to the left, and each spreader will contact with the looper thread extending from the eye of the looper to the previous stitch "formation of the looper with'whioh it is associated. This continued lateral movement of the looper in one direction and the spreader in the other, will separate the looper thread loop from the body of the looper, thus spreading the thread triangle so that when the needle descends, it will, with certainty, pass between the looper thread and the body of the looper or enter the'thread triangle. Itwill be noted that the face of the spreader which contacts with the looper thread is straight and slightly inclined to a plane at .right angles to the path of movementof the spreader, so that when a spreader face contacts with the looper thread,

it willretain the looper thread during the retractin'g movement of the looper a sufiicient time for the spreading of the looper thread loop so that the point'of the needle may'enter the same,-

These spreader fingers 30, 31, 32

'dles.

and just as soon as the point of the needle has passed the looper thread I as indicated in Figures 7 and 8, then the continued backward movement of the looper will cast the thread from the spreader. The straight inclined face greatly facilitates the casting of the thread therefrom.

In Figures '7 and 8, the looper thread of the looper 8 is indicated at Z. The spreader 30 is shown in contact with a looper thread and carrying the same to one side so as to open the thread triangle for the needle 1 to enter.

The plate from which the spreader fingers are formed is made by the manufacturer, and each spreader finger is shaped so as to properly cooperate-with its looper when the loopers in the multiple needle machine are properly set to cooperate with the needles for a certain desired gauge of nee- Inasmuch as the spreaders are not adjustable, there is no chance of the operator shifting the same and thus throwing the cooperating parts out of proper timing. Furthermore, when. the spreaders and the supporting plate are formed from a single piece of metal, there is no chance of the spreaders workingloose and. shifting out of proper position. The structure is strong and durable and the spreader fingers are held in a rigid position relative to the supported shank. The supporting shank is broad and can be firmly attached to the carrier therefor. It is essential that the spreader shall be supported in front of the extreme position to which the loopers are moved andshall project so as to overhang the loopers, and by. forming the spreaders and the shank from a single piece of metal, a very rigid support is provided for these overhanging spreader fingers. Then again, the number of parts are reduced so that the structure may be made light, all of which contributes to high speed in this type of machine.

It is obvious that minor changes in the shaping of the parts may be made without departing from thespirit of the invention as set'forth in the appended claims.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is v 1. A multiple needle sewing machine. including in combination a plurality of needles arranged in a line at right angles to the line of feed, a thread carrying looper associated with each needle .and moving in a plane substantially parallel with the line of feed and in a direction opposed to the feed as it enters its needle thread loop,' a spreader finger associated with each looper, a common shank supporting all of said spreaders, said spreaders and common shank being integral whereby .said spreaders have a rigid set position relative to each other, a carrier for said shank, and means for, moving said carrier in a directiontransversely of the line of feed for causing the spreader to engage the looper thread loop and position the same for the needle to enter, each spreader having the face thereof contacting with the looper thread straight and slightly inclined to a plane at right angles to the path of movement of the'spreader.

, 2. A multiple needle sewing machine including in combination a plurality of needles arranged in a line at right angles to the line of feed, a thread carrying looper associated with each needle and moving in a plane substantially parallel with the line of feedand in a direction opposed to the feed as it enters its needle thread loop, a spreader finger associated with each looper, a common shank supporting all of said spreaders, said spreaders and common shank being integral whereby said spreaders have a rigid set position relative to each other, a carrier for said shank, and means for imparting a needle avoiding movement to the looper and for moving said carrier for the spreaders in a direction at right angles tothe line of feed and said spreaders in a direction opposed to the movement of the loopers for causing the spreaders to engage the looper thread loops to position the same for the needles to enter their respective thread triangles, said spreaders having the faces thereof which contact with the respective looper threads straight and inclined away from a plane at right angles to the path of movement of the spreaders;

feed as it enters its needle thread loop, a spreader finger associated with each looper, each spreader finger having the face thereof which contacts with the looper thread straight and inclined away from a plane at right angles to the path of movement of the spreader, a common shank supporting all of said spreaders, said spreaders and common shank being integral whereby said spreaders have a rigid set position relative to each other, a carrier for said shank, said shank overlying said carrier and screws for rigidly attaching the same to the carrier, a shaft on which said carrier is mounted, and means for moving said shaft endwise for imparting a lateral movement to said spreaders, said movement of the spreaders being timed so as to cause the spreaders to engage the looper thread loops during the lateral movement of the loopers for spreading the thread triangles for their respective needles to enter.

CHARLES F. RUBEL.

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