Патент USA US2411499код для вставки
NOV. 26, 1946. H. BOOTHROYD ' 2,411,499 SEWING MACHINE Filed June 29, 1945 1a., 2, ' , Inventor Hubev-i- BOOi/myd ‘LS Aizfov-neg Patented Nov. 26, 1946 r 2,411,499 UNITED STATES PATENT OFFICE 2,411,499 SEWING MACHINE Hubert Boothroyd, Leicester, England, assignor to United Shoe Machinery Corporation, Flem ington, N. J., a corporation of New ‘Jersey Application June 29, 1945, Serial No. 602,197 In Great Britain July 19, 1944 6 Claims. (Cl. 112-35) 2 This invention is concerned with improvements in or relating to sewing machines and is par ticularly, but by no means exclusively, concerned sist in certain devices, combinations and arrange ments of parts, hereinafter described and claimed, the advantages of which will be apparent from the following description taken in connection with with curved hooked needle chainstitch welt shoe ‘ sewing machines organized for sewing an inseam the accompanying drawing. through an upper, a Welt and an insole of a Good ‘ In the drawing, year welt shoe; the term shoe used ‘herein being intended to include outer footwear generally. By way of example, the invention is herein illus part of the illustrative mechanism; trated as embodied in a welt and turn shoe sew II—-II in Fig. 1; and ing machine in which mechanism for supporting awl, needle and other stitch forming devices is arranged to cause the awl and needle to enter the work from the same side thereof and the chain of the inseam, i. e., the interlocking loops of thread, to lie on the welt. Fig. 3 is a sectional view, in left-hand side ele vation, of the illustrative mechanism taken on the line III—-III in Fig. 2. The machine illustrated in the drawing is a welt shoe inseam sewing machine of the general character of the machine ‘described in United Fig. 1 is a left-hand view in side elevation of Fig. 2 is a sectional View, taken on the line One of the various objects of the present in- , vention is to enable relatively movable parts of a shoe inseam sewing machine to be supported in the machine in such a manner as to prevent un desirable relative movement. Another of the various objects of the present invention is to enable parts of a shoe inseam sewing machine which are particularly subject to relatively rapid wear to be readily and inex pensively renewed in a particularly convenient States Letters Patent No. 2,041,945, granted May 26, 1936, on application of Alfred R. Morrill, ex cept that the machine of the present application 20 is arranged, as in United States Letters Patent No. 1,920,998, granted August 8, 1933, also on' application of Alfred R. Morrill, to lay the chain it of the seam on the welt instead of in the channel of the insole of the shoe being operated on, as described in said ?rst-mentioned patent. ' The illustrative machine comprises a curved manner. awl I secured in an awl support or carrier 3 ar In the illustrative machine hereinafter de scribed a needle support, a needle guide support ranged to oscillate about an aXis 5 into engage , ment with a workpiece and away therefrom. The and a channel guide support all form together a 30 awl support 3 has extending from it cylindrical carrier movable towards and from the work about the same axis and in the direction of work feed so that a needle and a channel guide respectively secured on the needle support and channel guide support cooperate with an awl support compris ing a second carrier similarly mounted in the machine to eifect a continuous or substantially continuous feed of the work, the needle and chan nel guide carrier and awl carrier being mounted inreadily removable bearings secured to the ma chine frame with fastenings common to more than one of the bearings to enable easy replacement. In order to provide support for the needlean'd channel guide carrier additional to ‘that pro vided by the removable bearings, the needle and channel guide supports are provided with inter engaging portions arranged outside the circle of the needle as far as is convenient away from the axis about which these supports move. These portions 1, ‘l rotatably and slidably mounted in readily renewable bearings or bushes 9, 9. The bushes 9, 9 are secured in a bracket H which is ?xed to the head of the machine by bolts, one of which is shown at l3. The bracket II has a por tion I5 which connects the parts of the bracket ll directly contacting the machine frame. The bushes 9, 9 each have a ?ange ll extending there from, which ?anges are secured by fastening screws !9, 19 to the frame bracket H. The awl support 3 is moved to and fro in the line of feed by cam-operated levers, portions‘ of which are shown at 2!, 2| which engage hardened discs 23, 23 in bores in the cylindrical portions 1, 1 of the awl support 3 and the awl support is oscillated about the aXis 5 by cam-operated mechanism sim ilar to that disclosed in Patent No. 1,920,998, re-' ferred to. Y i The curved hooked needle of the machinaiin portions, while they allow relative oscillating 50 dicated at 25, is mounted on a separate carrier movement of ‘the needle and channel guide 'sup and=is secured in a needle support 21 which has ports about said axis, are arranged to prevent projecting from it a sleeve portion 129 (Fig. 2) undesirable relative lateral or twisting or cant‘ rotatably and slidably mounted in a‘readily're lng movements of the supports. ' - These and other features of the ‘invention con placeable bearing bracket 3! secured by the afore 55 said fastening-screws l9, l9 to the frame bracket ‘ 2,411,499 3 4 of the flange. By this construction it is possi 51 which has on it a ?ange 59 engaging the end of the sleeve portion 31. At the end of the spindle 5i opposite the flange the spindle is secured to the sleeve portion 28 by a pin 6!. The pin BI and ?ange 59 on the spindle prevent relative axial movement between the needle, needle guide and channel guide support parts of the carrier but jecting from it a sleeve portion 3'! ' rotatably patents above referred to. H. The screws i9, I!) are threaded into the bearing bracket 3! at one side of the frame bracket I! and pass through clearance holes in the frame bracket I! and flange H at the other side of the frame bracket it, the undersides of the heads of the screws engaging the outer face allow the, supports to oscillate relatively about ble to renew the bearing bracket 3| and the bush the axis of the spindle 5?. At each end of the 5} at the left side of the machine merely by removing the set of screws IE3 at the left which 10 spindle 51 is a small block 63 arranged to be engaged by cam-operated levers, indicated at 65, form common fastenings for both the bearing acting to move the carrier for the needle, needle bracket 3! and adjacent bush 9. guide and channel guide to and fro in the direc The channel guide 33 is secured on a channel tion of work feed. The needle, needle guide and guide support 35 which is mounted for oscilla tion relatively to the needle but forms a part of 15 channel guide are oscillated relatively to each other about the axis of the spindle 5'! by cam the carrier for the needle and channel guide operated means, as described more fully in the together. The channel guide support has pro The awl support-3 alone comprises the awl and slidably mounted in a bracket 39, similar to the bearing bracket 3i, secured to the bracket 20 carrier and is separate from that formed by the needle and channel guide'supports 2'! and H by fastening screws in the same manner as 35 together with the spindle 5] on which the that of the bearing bracket 3!. The bearings for needle, channel guide and needle guide are the awl carrier and the needle and channel guide carrier formed‘by the pair of bearing brackets .mounted. The construction and arrangements 3!, 3i) and the adjacent pair ofibushes 9 thus 25 of the carriers thus are compact, rigid and dura ble in use and serve in minor particulars to assist may readily be removed from the frame bracket in assembling the various carrier parts and_bear i l and renewed if the parts become worn, saving ing members therefor during the manufacture expense of replacing the larger and heavier parts of the machine. The construction of the arcuate of the machine; Renewing the bearing brackets when worn, also restores the axial alinement of 30 guiding portion 43 and groove 45;, being remote from the spindle 51, obviously interferes in no' the needle support and the channel guide sup way with the assembly of the needle and channel port, > guide supports and is conducive to an extremely To provide additional support for the needle and channel guide carrier parts the channel guide support 35 has secured to it a block M having 35 rugged construction. ' . - The nature and scope of the invention having been indicated and‘ a particular embodiment formed on it an arcuate guiding or rib portion thereof having been described, what is claimedis: 43 concentric to the axes of the needle and chan 1. A chain stitch inseam shoe sewing machine nel guide support sleeve portions 29, 3? which having a frame member, stitch forming devices are themselves in axial alinement. The arcuate guiding portion ‘i3 engages a groove 45 in the 40 in the frame member including a curved hook needle, an awl, a channel guide, and a carrier needle support 2?, which-is arranged as far as is on which the needle and a second one of the convenient outside the circle of the needle from stitch forming devices are mounted, and a sepa the axis of the sleeve portion 29. The arcuate rate carrier on which the third one of the stitch guiding portion 53 has on it a face 41*, at right angles to the axes of the sleeve portions 29, 31 45 readily formingremovable devices is bearing mounted,members in combination for said car' and engages a face 49‘ on the needle support, which engaging faces prevent the needle support and channel guide support from separating move riers secured in the frame member with a fasten ing common to more than one of the bearing ment axially away from each other. members. 2. A chain stitch inseam shoe sewing machine having a frame member, stitch forming devices As shown particularly in Fig. 3, the arcuate guiding por 60 tion 43 is of. such angular extent around the aforesaid axes‘that, after wear of the bearing in in the frame member including a curved hook needle, an awl, a channel guide, and a carrier on which the needle and a second one of the twisting or canting movement of the needle sup port in the bearing about the point of engage 55 stitch forming devices are mounted, and a sepa rate carrier on which the third one of the stitch ment of the needle in the work relatively to the the bracket 39, the arcuate portion also prevents channel guide during work feed and ensures that the portion 413 and groove 4-5 will be in engage forming devices is mounted, in combination with readily removable bearing members for said car riers comprising a bearing bracket and‘ a ?anged ment during the whole of the relative oscillating movement between the needle support and chan 60 bearing bush with a common fastening screw passing through the flange of the bush, the frame nel guide support about said axes. member and the bearing bracket to secure said The needle'is equipped with the usual form of needle guide 5! secured to a needle guide sup 3. A chain stitch inseam shoe‘ sewing machine port 53 positioned between the needle support 2'! and channel guide support 35. The needle 65 having a frame member,- stitch forming devices parts-together. guide support pivotally mounted on a bush ing 55 having a tongue-and-groove connection to the needle support so that it rotates there with. The block M spans the thickness of the needle guide support 53 and thus serves to hold 70 all the parts of the needle and channel guide ‘ - ' ' ' in the frame member including a curved hook needle, an awl, a channel guide; and a carrier on which the needle and a second. one of the stitch forming devices are mounted, and asepg arate carrier on which the third one‘ of, the'stitch; forming devices is mounted, in combination'with readily removable bearing members for said car-: riers comprising a pair of bearingbrackets and Passing through the sleeve portions 29 and 3‘! a pair of ?anged bushes with common fastening of the needle and channel guide carrier and the bushing 55 of the needle guide support is a spindle 75 screws, each passing through; the ?ange of? a carrier together. _ 5 2,411,499 bush, the frame member and a bearing ‘bracket to secure said parts together. 4. A chain stitch inseam shoe sewing machine having work feeding and stitch forming devices including a curved hook needle, an awl, and a 6 the needle and channel guide, and a spindle for preventing relative movement from axial aline ment between the needle and channel and needle guide supports, in combination with rib and groove means on the needle and channel guide channel guide mounted for relative oscillating supports spanning the needle guide and prevent movement, a carrier movable back and forth in the direction of Work feed upon which the awl is mounted, a separate carrier movable back and ing axial movement of the needle support rela tive to the channel guide support during the whole of the relative oscillating movement of forth in the direction of work feed comprising 10 said supports. axially alined supports for the needle and chan 6. A chain stitch inseam shoe sewing machine nel guide, and a spindle for preventing ‘a rela having work feeding and stitch forming devices tive movement from axial alinement between the including a curved hook needle, an awl, and a needle and channel guide supports, in combina channel guide mounted for relative oscillating tion with interengaging portions on the needle 15 movement, a carrier movable back and forth in and channel guide supports outside the circle of the direction of work feed upon which the awl is the needle for preventing axial movement of the mounted, a separate carrier movable back and needle support relative to the channel guide dur forth in the direction of work feed comprising ing the whole of the relative oscillating movement axially alined supports for the needle and chan of said supports. 20 nel guide, and a spindle for preventing a rela 5. A chain stitch inseam shoe sewing machine tive movement from axial alinement between the having work feeding and stitch forming devices needle and channel guide supports, in combina including a curved hook needle, a channel guide, tion with interengaging portions on the needle and a needle guide located between the needle and channel guide supports remote from said and channel guide and mounted for relative os 25. spindle for preventing relative axial movement cillating movement, and a carrier on which the of separation between said supports. needle,‘ channel guide and needle guide are mounted, including axially alined supports for HUBERT BOOTHROYD.