US1999302A - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
US1999302A
US1999302A US642051A US64205132A US1999302A US 1999302 A US1999302 A US 1999302A US 642051 A US642051 A US 642051A US 64205132 A US64205132 A US 64205132A US 1999302 A US1999302 A US 1999302A
Authority
US
United States
Prior art keywords
needle
thread
looper
shoe
work
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
US642051A
Other languages
English (en)
Inventor
Ricks Fred
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.)
United Shoe Machinery Corp
Original Assignee
United Shoe Machinery Corp
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 United Shoe Machinery Corp filed Critical United Shoe Machinery Corp
Application granted granted Critical
Publication of US1999302A publication Critical patent/US1999302A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B15/00—Machines for sewing leather goods
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00—Applied objects or articles
    • D05D2303/02—Tape

Definitions

  • This invention relates. to sewing. machines and is. particularly, but by no means exclusively; concerned: with boot or. shoe inseam. sewing ma chines for use in sewing, together the welt, up-
  • Machines of thisclass have a curved hookneedle, a looper, a-thread finger and: take-up which cooperate 1 informing a. chain stitch seam;
  • the thread finger isiswung rearwardly of the machine and draws a bight of: the'thread which extends between the workand'ztherlooper, the needle then having penetrated the-work and; beingin posi tion to have the thread. laid in itsrhook. bythe 1ooper.-
  • the thread After the. looperhas laid the. thread inthe-hook. of. the needle and. as the needlemoves back. to draw a loop ofv thread. through. the work, the thread: fingerswingsforwardly and gives up' thread to one side of the: needle while the thread. at the other side of. the needle is drawn through the looper.
  • Fig. 1 illustrates, in side ele vation, a portion of a welt shoe sewing machine embodying the present invention, which sewingmachine-is of the general construction described inthe patents abovereferred to,- andmore par ticularly in. the patent to-Topham;
  • Fig. 2' is a view in side elevation on a somewhat larger scale than Fig. 1 ofpart of awelt-shoe sewingmachine embodying thepresent invention, which machine. is of the. general construction described in thepatents above referred topand more particularly.
  • Fig. 3 is a-view in front elevationpartly in section of a portion of the mechanism illustrated in Fig; 2';
  • Fig. 8 shows in plan the toe end. of a welt shoe and the relative'position of the parts illustrated in Figs. 4 to 7- at one point in the formation of a stitch, and
  • Fig; 9 illustrateson an enlarged scale a portion. of the arrangement for supporting and actuating the looper.
  • the looper 4 To enable the looper 4, however, to lay the thread in the barb of the customary needle coming in each cycle to the conventional position, it is caused to move towards the needle in the direction of the length of the needle or dip by suitable modification of its operating mechanism as hereinafter described from its raised position so that it can perform its looping operation and is then raised again so that the thread finger can take its bight of thread duringthe next cycle.
  • the thread finger and looper By causing the thread finger and looper to cooperate in a raised position and causing the looper to have an up and down movement in the direction of the length of the needle to efiect the laying of the thread in the barb of the needle, ample clearance is provided between the work and the thread finger at all times so that the shoe can be freely manipulated when the needle is out of the work without interference by the thread finger.
  • the looper s is actuated in its movement across and forwardly and rearwardly of the machine to lay the thread in the barb of the needle by mechanism similar to that shown in the Eppler patent, but the looper instead of being fixed in the arm 6 is formed on a bar I which is slidingly mounted in a guideway formed in the lower end of the arm 6, which guideway is substantially parallel when viewed from the front and side of the machine to the arm.
  • the bar I has extending laterally from it a stud 8 having a ball end which makes a universal connection with the lower end of an upwardly and forwardly extending link 9, the upper end of which, in a welt shoe sewing machine in which the work is fed continuously as in the machine described in the Topham patent, and shown in Fig. 1 of the drawings, has a universal connection with the cam arm H! which efiects the swinging of the channel guide towards and. from the channel.
  • the upper end of the link 9 is, as shown in Figs.
  • the arm H is pivoted on the head of a shaft l2, corresponding to the shaft referred to as 15 in the Eppler patent, and is secured by a screw I3 to an arm M of a cam lever l5 which is pivoted on a sleeve H5 in which the shaft I2 is rotatably mounted and which sleeve is secured in a bracket ll fixed on the machine head.
  • the lever l5 carries a cam roll l8 which enters a cam groove in a cam ring l9 secured to the cam block 28, in which is the usual cam groove by which the channel guide is moved towards and from the work.
  • the cam groove in the cam ring I9 is similar to the groove which actuates the cam lever referred to as 28 in the Topham patent, which latter cam imparts to the channel guide a movement towards and from the work support. In this way the looper is given a similar up and down movement in a welt sewing machine having a continuous work feed or in a machine having a step by step feed.
  • the dipping 0f the looper occurs at the same time as the moving ofthe channel guideway from the channel to allow of its return feed movement and the raising of the looper occurs when the channel guide is moved back into engagement with the channel.
  • the looper is caused to dip from its elevated position it is also swung to the right (viewing the machine from the front) and moved forwardly by the mechanism shown in the Eppler patent to move it from the left hand side of the needle, where the thread finger takes its bight of thread to the right hand side of the needle and remains in this dipped position while its lower end is moved completely round the needle by the latter mechanism to lay the thread in the barb of the needle.
  • the looper As the needle moves back to draw its loop of thread through the work, the looper is swung to the left by the last mentioned mechanism and at the same time is raised from its dipped position by the link and cam arm to return it to its position at the left of the needle where the thread finger can again take its bight of thread.
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle, a looper and a thread finger arranged to give up thread as the needle withdraws from the work and to move in an elevated path at a distance from the work and from the
  • the cam arm 2'! is secured at one end to the needle barb while the needle is through the work suflicient to clear the channel lip and upper margin of the shoe, means for actuating the looper to carry the thread into the path of movement of the thread finger and around the needle, and means for moving the looper during each cycle of operations towards the needle in the direction of the length of the needle to cause the thread first to be engaged by the thread finger and thereafter to be engaged in the needle barb.
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle, a looper and a thread finger arranged to give up thread as the needle withdraws from the work and to move back and forth across the channel lip and upper margin of the shoe in an elevated path at a distance from the work and from the needle barb While the needle is through the work sufficient to clear the channel lip and upper margin of the shoe, means for actuating the looper to carry the thread into the path of movement of the thread finger and around the needle, and means for moving the looper during each cycle of operations upwardly from the work to cause the thread to be engaged by the thread finger at the proper time in each cycle of operations for the next succeeding stitch.
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle and a looper, a back rest, a channel guide, means for actuating the channel guide towards and from the back rest, means for actuating the looper during each cycle of operation of the machine to carry the thread around the needle, and connections between the channel guide actuating means and the looper for moving the looper towards and from the needle in the direction of the length of the needle.
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle, a looper, a thread finger, a
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle and a looper, a back rest, a channel guide, means for actuating the channel guide towards and from the back rest, a slide on which the looper is supported, a looper actuating member having a guideway for the slide extending in apprcximately the direction of the length of the needle, means for moving the actuating member to carry the thread extending from the looper around the needle, and connections between the slide and the channel guide actuating means for reciprocating the slide to shift the looper towards and from the position where it may lay the thread within the needle barb.
  • An inseam shoe sewing machine having, in combination, stitch forming devices including a curved hook needle, a looper and a thread finger,
  • a slide on which the looper is supported a looper actuating member having a guideway for the slide extending in approximately the direction of the length of the needle, means for moving the actuating member to carry the thread extending from the looper into the path of movement of the thread finger and around the needle, and means for actuating the slide to shift the looper from one position in which the thread finger receives the thread into another position in which the thread is laid within the needle barb.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US642051A 1931-12-10 1932-11-10 Sewing machine Expired - Lifetime US1999302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34230/31A GB393643A (en) 1931-12-10 1931-12-10 Improvements in or relating to sewing machines

Publications (1)

Publication Number Publication Date
US1999302A true US1999302A (en) 1935-04-30

Family

ID=10363026

Family Applications (1)

Application Number Title Priority Date Filing Date
US642051A Expired - Lifetime US1999302A (en) 1931-12-10 1932-11-10 Sewing machine

Country Status (4)

Country Link
US (1) US1999302A (de)
DE (1) DE664688C (de)
FR (1) FR746931A (de)
GB (1) GB393643A (de)

Also Published As

Publication number Publication date
GB393643A (en) 1933-06-12
FR746931A (fr) 1933-06-08
DE664688C (de) 1938-09-03

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