US2910949A - Sewing machines - Google Patents

Sewing machines Download PDF

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Publication number
US2910949A
US2910949A US611432A US61143256A US2910949A US 2910949 A US2910949 A US 2910949A US 611432 A US611432 A US 611432A US 61143256 A US61143256 A US 61143256A US 2910949 A US2910949 A US 2910949A
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United States
Prior art keywords
machine
bag
strip
guide
sewing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US611432A
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English (en)
Inventor
Greisman Samuel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COMTEX Ltd
Original Assignee
COMTEX Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COMTEX Ltd filed Critical COMTEX Ltd
Application granted granted Critical
Publication of US2910949A publication Critical patent/US2910949A/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B13/00—Machines for sewing sacks

Definitions

  • This invention concerns improvements in or relating to sewing machines for use in applying a binding over the edge or edges of one or more layer or layers of material and simultaneously sewing such binding and said layer or layers together, and more particularly the invention concerns improvements in or relating to machines for closing or sealing (hereinafter referred to as sealing),
  • paper, plastic, or fabric envelopes or containers and matsuccessively through the said gap (usually with the machine so disposed that the said U-shaped gap is in a vertical inverted position) and being sewn up by stitching passing directly through the opposite walls of the bag.
  • the sewing machine is of a portable character and is taken to the bags instead of the latter being taken to the machine.
  • a portable sewing machine also has a U-shaped gap as aforesaid and has a handle at its upper part whereby the machine may be suspended over the mouth of the bag and passed laterally across the bag to sew up the mouth thereof.
  • Figure 1 is a perspective view of a reel holding and folding attachment constructed in accordance with this invention for attachment to a bag sealing sewing machine;
  • Figure 2 is a front perspective view from one side of a bag sealing sewing machine having the attachment illustrated in Figure 1 and a co-operating guillotine applied thereto;
  • Figure 3 is a front perspective view taken from the other side of the machine shown in Figure 2;
  • Figure 4 is a fragmentary part-sectional plan of the machine shown in Figures 2 and 3 and illustrates how the attachment shown in Figure 1 can be collapsed into an out of the way position on the said machine;
  • FIG. 5 is a fragmentary section on line V-V of Figure 4.
  • 1 is the bag sealing sewing machine which comprises a head 2 having an inverted U-shaped gap 3 and furnished at its upper part with a handle 4 whereby the machine may be suspended over the mouth of a bag such as 5 (Figure 2) passed between the foot 6 of the sewing machine (carried by the forward limb 7 of the head) and the feed mechanism 8 carried by the rear limb 9 of the head of the machine, the arrangement being such that the machine may be suspended over the mouth of the bag 5 and traversed along such mouth to enable the mouth of the bag to be sewn upby means of the needle 1i) of the machine, and thread 11 fed from a bobbin 12 carried by the machine, said needle being driven conveniently from an electric motor 13 through a driving shaft and suitable transmission.
  • the foot 5 is withdrawa'ole by means of a lever 15.
  • the sewing machine so far described is of normal known form and no claim is made per se to such a machine.
  • the machine 1 is provided with a tape or covering strip applying attachment.
  • This attachment is mounted on one side of the machine 1, Le. on the right-hand side viewing themachine from the front, and comprises a reel holder bracket or support generally indicated by the reference 16 and which is
  • This bracket 16 is conveniently formed from a blank of appropriate sheet metal (e.g.
  • the main panel 17 of the bracket 16 is capable of swinging about the vertical axis 19 relatively to the wing 18 so that the panel 17 may either be arranged in the operative position shown in Figures 1 and 2 and in full lines in Figure 4 or swung rearwardly through into the position indicated in chain-dotted lines in Figure 4 when the main panel 17, and the parts carried thereby and subsequently described, are located in an out-ofthe-way position enabling the sewing machine to be used for normal purposes as if the attachment being described was not applied to the machine.
  • a displaceable strut member 22 hinged at 23 to the lower end of the wing 18 and capable of swinging from an out-of-the-way collapsed position shown in chain dotted lines at 24 in Figure 1 into the horizontal position shown in full lines in Figure 1 behind the panel 17 so as to hold this out from the wing 18 at right angles thereto, the strut 22 having a corner part 25 adapted to engage upon a protuberance 26 extending rearwardly from the panel 17.
  • This panel is prevented from swinging forwardly more than 90 from the wing 13 by means of a vertical stop flange 27 formed integrally with the lower part of the hinged edge of the panel 17 and projecting at right angles forwardly therefrom so that, when the panel 17 is arranged at right angles to the wing 18 and thus perpendicular to the side face of the head 2 of the sewing machine, the stop 27 bears against the side of the rear limb 9 of the head 2 and limits the further forward movement of the panel 17.
  • the front edge of the stop 27 is furnished with a return portion 28 which is adapted to clip the front of the rear limb 9 of the head 1 of the machine as is shown clearly in Figure 4 of the drawings.
  • the panel 17 may be constantly spring urged to its out-of-the-way position and be held in its operative position, when required, by means of the strut 22.
  • the panel 17 is furnished with a forwardly projecting spindle 3d fixed at one end, cantilever fashion to the panel.
  • the spindle 30 has a plain portion 31 to receive a reel 32 of covering strip or tape 33 and terminates in a reduced screw threaded portion 34 which receives a cup shaped washer 35 and a clamping nut 36, a spring 37 being provided between the clamping nut 36 and the washer 35 to press the latter into frictional engagement with the reel 32 thereby to hold the latter on the spindle 30 and to prevent the reel 32 overrunning in use.
  • the reel may be formed by winding the covering strip upon a metal, cardboard, wooden or other suitable tubular core which fits freely upon the spindle 30.
  • the strip may be carried by a reel having side flanges between which the strip is located, the reel then being similar to a cinematograph film reel.
  • a guide carrying flange 38 having secured on its underside guide means in the form of a covering strip guide 39 having a flattened cross-sectional form at its input end 40 and progressively assuming an even deepening channel section towards its output end 41 ( Figure 1).
  • the covering strip 23 is fed from the reel 32 to the guide 39 which progressively converts the strip from its initial substantially flat form into a deep inverted U- or V-form in cross-section.
  • the guide 39 is conveniently formed from a blank of sheet metal of initially substantially rectangular form having portions 42 of its longitudinal edges 43 doubled over, as shown in Figure 5, upon the blank to form channels into which the edges of the covering strip 33 pass as the strip is fed through the guide 39 and in which the edges of the strip are held until the strip passses from the guide to the head 2 of the sewing machine 1, the said blank being doubled upon itself along its centre line to a progressively increasing extent from its input end 49 to its output end 41 where the blank is most severely bent upon itself.
  • the arrangement being such that the flat strip of covering material is progressively converted from the said flat strip form to the said deep inverted U- or V-shape in cross-section when it is ready to receive between its side flanges the mouth of the bag 5.
  • the guide 39 is rolled upwardly and over upon itself so as to form wide bearing element or a cylindrical tranverse portion 44 perpendicular to the longitudinal edges of the guide and over which the strip passes as it travels from the reel 32 to the guide 39 and by which the strip is smoothed out and slightly tensioned before passing to the guide.
  • the portion 44 may be replaced by a roller to minimise Wear and tear on such portion.
  • the covering strip 33 is conveniently drawn off from the top outer portion of the reel 32 and then fed downwardly and around the cylindrical portion 44, into the guide 39, with the edges of the strip in the laterally spaced side channels of the guide, and forwardly through the guide to the gap 3 in the sewing machine head 2.
  • an adjustable mirror 45 is arranged below the level of the guide, this mirror 45 being carried by a screw 46 itself carried by the free end of an arm 47 which is attached at its other end to the cylindrical portion 44 of the guide 39, which for this purpose conveniently extends forwardly beyond the forward longitudinal edge 43 of the guide, by the doubling of the end of the arm 47 over the cylindrical portion 44 and the securing of this doubled over end to an intermediate part of the arm by a thumb screw 48.
  • the mirror 45 is universally adjustable relative to the screw 46, as by being connected thereto through the medium of a ball and socket joint so that the position of the mirror 45 can be set to suit the particular operating position assumed by the operator who can then observe any breakage in the strip 33 or any other untoward happening.
  • the position of the arm 47 may be adjusted angularly around the axis of the cylindrical portion 44 of the guide 39 by loosening the thumb screw 48 and retightening the same when the arm has been moved. By this means the arm 47 may be moved to the position shown in chain dotted lines in Figure 1 to move the mirror 45 to an out-of-the-way position when the panel 17 is to be moved to its out-of-the-way position shown in chaindotted lines in Figure 4.
  • the sealing strip will preferably be crepe paper as this is inexpensive, resilient and suitable for the purpose, but other suitable materials may be employed if desired, e.g. stronger materials such as fabric strip.
  • a guillotine assembly for severing the covering strip just beyond the trail: ing end of the sealed mouth of the bag.
  • This assembly comprises a pair of guillotine blades 49, 50 (see Figure 3) pivoted together at one end so as to operate scissor fashion, the blade 49 being secured, e.g. by screwing, to the lower part of the rear limb 9 of the head 2 and at the side of the head so that, as a sealed bag passes entirely from the head of the machine, the other blade 50 can be closed upon the blade 49 to cut off the strip.
  • the movable blade 50 is furnished with a forwardly extending operating lever 51 having at one end an L-shaped plate 52 by which it is secured to the blade 50 and at the other end a hand knob 53, conveniently formed of rubber or like material, and passing through a guide slot 54 provided in a bracket 55 fitted to the forward limb 7 of the head 2 of the machine.
  • the guide slot 54 limits the extent of movement of the blade 50 and also ensures that the latter will mate satisfactorily with the other blade 49.
  • a spring 56 is secured between the upper edge of the blade 50, and the upper part of the bracket 55 and serves to urge the guillotine blades to their relatively opened positions.
  • the guillotine above described serves not only to cut off the sealing strip but also to sever the cotton used in the sewing operation so that this guillotine will preferably be used whether a sealing strip is being applied to a bag, or not.
  • the above described guillotine may be modified to make the blades longer, the pivot for the blades being near the top of the gap, the operating arm or lever being curved, the position of the spring modified and the guard suitably correspondingly formed.
  • an auxiliary device for applying and stitching a covering tape over the edge of material to be sewn, said device comprising a support having a wall and a flange extending from a vertical edge thereof, said flange provided with slot means adapted to detachably engage cooperating means disposed on said machine, a spindle carried by said wall adapted to mount a reel of said tape thereon in alignment with said mechanism, adjustable friction means adapted to engage the reel when mounted thereon to oppose free turning of said reel, fold guide means carried by said wall adjacent the lower edge thereof, the input end of said fold guide means being provided with a wide bearing element adapted to spread and smooth said tape, said guide means having a narrow inverted channel output end and adapted to continuously feed said tape in folded position over the edge of material being fed to said sewing machine for stitching during operation of said mechanism.
  • a device wherein said wall and said flange are connected by a collapsible support means, whereby said spindle-mounted reel and said guide means may be moved from aligned operative position relative to said mechanism to an inoperative position, and means for retaining said device in such inoperative position.
  • a device wherein a displaceable strut disposed on said flange is adapted to engage said wall and maintain said wall in operative position.
  • a device according to claim 3 wherein said wall is provided with a clip means adapted to engage said machine and cooperate with said slot means to maintain said device in operative alignment with said mechanism.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US611432A 1956-07-05 1956-09-24 Sewing machines Expired - Lifetime US2910949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB352225X 1956-07-05

Publications (1)

Publication Number Publication Date
US2910949A true US2910949A (en) 1959-11-03

Family

ID=10375260

Family Applications (1)

Application Number Title Priority Date Filing Date
US611432A Expired - Lifetime US2910949A (en) 1956-07-05 1956-09-24 Sewing machines

Country Status (5)

Country Link
US (1) US2910949A (de)
BE (1) BE551857A (de)
CH (1) CH352225A (de)
FR (1) FR1162701A (de)
GB (1) GB844443A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084642A (en) * 1960-03-21 1963-04-09 Bemis Bro Bag Co Bag top guide assembly
US20050150570A1 (en) * 2003-12-13 2005-07-14 Vital Levesque Process and device for handling a bag during the sewing operation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1748770A (en) * 1927-02-25 1930-02-25 Joseph F Horning Binding feeder
US2199005A (en) * 1937-12-06 1940-04-30 St Regis Paper Co Tape applying and cutting apparatus
US2282200A (en) * 1939-01-03 1942-05-05 Us Patent Dev And Royalty Comp Tape cutter for bag closing machines
US2423080A (en) * 1944-11-10 1947-07-01 Bemis Bro Bag Co Bag closing machine
US2758556A (en) * 1953-12-18 1956-08-14 Bemis Bro Bag Co Mechanical clutching and braking device for sewing machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1748770A (en) * 1927-02-25 1930-02-25 Joseph F Horning Binding feeder
US2199005A (en) * 1937-12-06 1940-04-30 St Regis Paper Co Tape applying and cutting apparatus
US2282200A (en) * 1939-01-03 1942-05-05 Us Patent Dev And Royalty Comp Tape cutter for bag closing machines
US2423080A (en) * 1944-11-10 1947-07-01 Bemis Bro Bag Co Bag closing machine
US2758556A (en) * 1953-12-18 1956-08-14 Bemis Bro Bag Co Mechanical clutching and braking device for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084642A (en) * 1960-03-21 1963-04-09 Bemis Bro Bag Co Bag top guide assembly
US20050150570A1 (en) * 2003-12-13 2005-07-14 Vital Levesque Process and device for handling a bag during the sewing operation

Also Published As

Publication number Publication date
FR1162701A (fr) 1958-09-16
BE551857A (de)
CH352225A (de) 1961-02-15
GB844443A (en) 1960-08-10

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