US1882886A - Sewing machine - Google Patents

Description

J. V. POOLE SEWING MACHINE Oct. 18, 1932.

Filed March 11, 1930 Um; ljbazt Patented Oct. 18, 1932 UNITED STATES JESE V. POOLE, '01 ABINGTON, MASSACHUSETTS, ASSIGNOR TO PUBITANEM'ANUFKC- TUBING COMPANY, OF'IBOSTON, MASSACHUSETTS, A CORPORATION/OF "MASSAZCE'U-' SETTS SEWING- MACHINE Application filed March '11, 1930. Serial No. 434,849.

This invention relates to improvements in sewing machines, and more particularly to the stitch forming and work supporting mechanism thereof. In the sewing of golf bags and like articles diificulty has been experienced in obtainng a work supportingarm small enough to receive relatively small golf bags and like articlesthereover,.the construction of the needle block .andiguide' mechanism in the work supports heretofore used rendering any further reduction in the size of the arm impossible. It is the objectofmy invention to provide an improved mechanism for this purpose which is of such smaller and more compact construction as to permit such a substantial reduction in the'sizeofthe arm as to adapt it to readily enter these smaller articles.

My invention furthermore contemplates the provision ofimproved needle and cast-off carrying mechanism mounted on the .feed

rocker. Heretofore theseielements have been carried byrelatively long reciprocating bars means being longer than the slides and wholly within the outline of the feed-rockeron which the guidemeans is mounted. The slide mechanism is of very substantial construction and the mounting of the slides is so compact as :to permit the use of a much smaller worksupporting arm for the purpose above stated. The invention further contemplates a novel mounting of the needles and cast-offs on the slides whereby such elements are easily ac cessible and readily removed and changed when occasion requires. It is another object of my invention to provide an improved machine embodying these novelfeatures.

With the above and other objects in view,

as will appear as this description proceeds,

.my invention consists 'inrthe features ofconstructionand operation set forth in thefollowingv specification and illustrated :in the accompanying drawing. In. such drawing,.I have illustrated certain specificembodiments of my invention but it will be'understood therein;

Figure 2is a fragmentary side elevation thereof; I

Figure '3is a vertical section taken oniline 3-3 of Figure 1;

Figure 4 illustrates one of the slides Figure 5 illustrates a modifiediform of-cas'toff holding block; Figure 6 illustratesthe needleblock; Figure 7 is a side elevation'of a sewing-machine illustrating one use of my invention.

Referring more specifically to the drawing by reference characters '1 indicatesva sewing machine provided with a worksupporting arm 2. This type ofzmachine is particular y adapted .for closed work, i. e., work which cannot be laid out fiatand whichis of bag-like form with a closed outline such as golf bags, helmets, etc. The armQ permits such work to be placed insewing position thereoverinline with theneedle 20 andaw1 3.

.InFigure 7 Ihave illustrateda golf bag 4 in sewing position on the arm 2. The needle or needles (not shown in Fig. 7) and vco-operating mechanism are carried 'in thearm .2 beneath the awl 3 and presser-footfi, and one object ofmy inventionis to make this mechanism so compact and the arm .suflicientl-y small to receive articles withrelatively small openings in sewing position thereover.

Mounted within the-arm 2 (Fig. 1) :is .the'

usual feed rocker 6 which has a yoke-like end 7 In the machine as illustrated herein this rocker is adapted to carry the needle and cast-off mechanisms, and to feed the work by the lateral movement which it gives to the needle. In order to permit reducing the size, and particularly the height, of the work supporting arm to a minimum, I mount the needle and cast-off carrying mechanisms entirely between the arms of the yoke-like end of this rocker. In the machine heretofore known it has been necessary to extend these mechanisms considerably outside the rocker, thereby requiring the work supporting arm to be ofrelatively large dimensions, or requiring a post of relatively great height.

I provide slides 8 and 9 for the needles and cast-ofi's respectively and, as one convenient means of mounting such slides,- I provide two vertical guide bars 10 mounted in the ends 7 of the rocker. The slides are each provided with a vertical bore 11 slidably fitting over one of these bars. Each slide has a lateral ofiset portion 12 having a vertical bore or socket 13 adapted to receive a supporting post, the posts being secured therein by means of set screws 14. These two slides are substantially alike and may be operated by any desired means. As here shown, the needle slide 8 is reciprocated by a shaft 15 having a crank arm 16 connected by a link 17 to a stud 18 on the slide. The cast-ofif slide 9 may be and is illustrated as operated from a similar shaft 15 through a crank arm 16, link 17 and stud 18.

laterally projecting portion 25 and a needle engaging finger 26, whereby the fingers 26 of the two cast-offs arelocated at opposite sides "of the needle to cooperate therewith in the usual way. The stems 24 are secured in the top part 27of a block 28 by means of set screws 31, the block being'supported on a post 29 in bore 13 of slide 9.

My invention contemplates the quick and easy transformation of the machine to adapt it either for sewing a single seam or for sewing a plurality of seams at one time. In Figure 6 I have illustrated a carrier for three needles interchangeable with the single needle carrier of Figures 1 and 2 for this pur- "which, like the post 22, is adapted to fit into the bore 13 of slide 8. The cooperating castofi's 32 for needles of this character are car- The shafts 15and 15 7 may be oscillated in the usual and Well ried by a block 33 on a post 34, the block being provided with a holding portion 35 in which the cast-oil's at one side of the needles are mounted. When the post 34 is in position in the bore 13 of the slide 9, this portion 35 eX- tends to a position directly over the needle block 21 and contains receiving holes 36 in line with the needles 20. The cast-ofis are removably secured in pairs flanking the holes 36, half of them in the portion 35, and the others in a detachable plate 37.

The posts 22 and 22 and posts 29 and 34 are adapted to fit interchangeably within the bores 13 of the slides 8 and 9 in a manner adapting the machine to bereadily transformed for operation with one needle or with a plurality of needles.

It will be noted that the compact arrangement of the needle and cast-off slides enables the work supporting arm to be made with minimum height, whereby it is adapted to conveniently receive relatively small work. Furthermore,-the needles and cast-offs are accessible and may be readily removed and changed when occasion requires. It will also be noted that the construction is exceedingly simple and cheap to manufacture, particularly since the needle and cast-oft mechanism may be duplicates one of the other.

I claim:

1. In a stitch forming mechanism, a feed rocker, guide means within the outline of the rocker, two slides slidable on the guide means, needle carrying means on one slide, cast-oft carrying means on the other slide, andmeans for reciprocating the slides.

2. In a stitch forming mechanism, a feed rocker, guide means within the outline of the rocker, two slides slidable on the guide means, needle carrying means on one slide,

cast-0E carrying means on the other slide, and means for reciprocating the slides including means for positively reciprocating the needle carrying slide. 7

3. In a stitch forming mechanism, a feed rocker having separated arms, two guide bars between said arms, secured thereto, a slide on one bar, a second slide on the other bar, needle carrying means on one slide, cast-oil carrying means on the other slide, and means for reciprocating the slides.

4. In a stitch forming mechanism, a feed rocker, two guide bars, two slides respectively mounted on the bars, needle carrying means on one slide, cast-off carrying means on the other slide, and means for reciprocating the slides.

5. In a stitch forming mechanism, a feed rocker, a guide'bar thereon, a slide on the bar, a post in the slide, needle carrying means on the post, and means for reciprocating the slide.

6. In a stitch forming mechanism, a guide bar, a slide thereon, a post removably mounted in the slide, needle carrying means on the post and means for reciprocating the slide.

7 In a stitch forming mechanism, a uide bar, a slide thereon, a needle carrying lock on the slide, a second slide, a post therein, a block on the post having a hole therein for receiving the needle on the first named block, means on the second block for holding cast-off means in position to co-operate with the needle in said hole, and means for reciprocating the slides.

8. In a stitch forming mechanism, two slides, guide means therefor, each slide having a lateral offset portion, needle holding means on said offset portion of one slide, castoff supporting means on the ofiset portion of the other slide and including a lateral offset cast-off holding portion over the needle holding means, and means for reciprocating the slides.

9. In a stitch forming mechanism, guiding means, a slide reciprocatable along said guiding means, a member of stitch-forming means carried by said slide, a slide-propelling shaft mounted beside, and at a level intermediate the ends of, said guiding means, and motiontransmitting connections between said shaft and slide.

10. In a stitch forming mechanism, a feed rocker having guide means extending between its upper and lower terminations, a slide reciprocatab-ly held by said guiding means, a stitch forming element carried by said slide, an oscillative shaft perpendicular to the plane in which said rocker moves, located at a height intermediate the ends of said guiding means, and motion transmitting connections from the shaft for reciprocating the slide.

11. A sewing machine having a horizontal work supporting arm, elements of stitch forming mechanism carried on the outer end of said arm and comprising a needle, an oscillative feed rocker having guiding means between the upper and lower extremities of said rocker, a needle holder designed to slide on said guiding means, and needle reciprocating mechanism located at a height intermediate the upper and lower terminals of said rocker.

12. In a sewing machine, the combination with a reciprocative needle carrier of a reciprocative cast-ofl' carrier, means for guiding said carriers in parallel paths, the cast-ofi carrier having a laterally offset portion overlying the needle carrier and formed with a hole to permit passage through it of the needle, and cast-offs secured to said cast-off carrier at relatively opposite sides of the needle-admitting hole whereby to cooperate with the needle in forming stitches.

In testimony whereof I have aflixed my signature.

JESSE V. POOLE.

Images