US2477941A - Buttonhole sewing machine - Google Patents

Buttonhole sewing machine Download PDF

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Publication number
US2477941A
US2477941A US659588A US65958846A US2477941A US 2477941 A US2477941 A US 2477941A US 659588 A US659588 A US 659588A US 65958846 A US65958846 A US 65958846A US 2477941 A US2477941 A US 2477941A
Authority
US
United States
Prior art keywords
cam
buttonhole
eye
stitching
stitches
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
US659588A
Other languages
English (en)
Inventor
Jr Franklin A Reece
Walter E Nichols
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.)
Reece Corp
Original Assignee
Reece 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 Reece Corp filed Critical Reece Corp
Priority to US659588A priority Critical patent/US2477941A/en
Priority to GB15273/49A priority patent/GB659655A/en
Priority claimed from GB15273/49A external-priority patent/GB659655A/en
Application granted granted Critical
Publication of US2477941A publication Critical patent/US2477941A/en
Priority to DEJ93D priority patent/DE851888C/de
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
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/06—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing for sewing buttonholes
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/32—Measuring
    • D05D2305/34—Counting
    • D05D2305/345—Stitch counting

Definitions

  • Eyelet-end buttonholes are of two main classes, open-end buttonholes and fly-bar :hwttonholes.
  • the machine embodying the present invention can be used for sewing either of these types of buttonholes.
  • our present invention provides means which automatically adjusts the feed? during the sewing of the buttonhole so that the number of stitches on one side of the buttonhOlB/Cfilflhfi varied with respect to the'number of stitches :on theother side, and also provides means iior omitting-ethenecessary number of stitches at the rounded .endwhen a no-eye buttonhole is sewn, the remaining stitches being spaced uni- .ifiormly.
  • FIG. I is a side elevation of a substantially com- :pletecbuttonhole sewing machine having applied theretomeohanismembodying the present invention';
  • Figs.2 and 3 are sectionstakenrespectively on the-lines 2--2 and 3--3-of Fig. 1;
  • Fig: l isa detail View
  • Figs. 8-:a-nd 9 are plan views of different types ef battonholes the present machine is capable'of
  • Fig. 10 is a view similar to Fig. 2 but with the 1 arts in a di-fierent operative position;
  • Fig. 11 is a- View similar to Fig. 1 but with certain partsdifferently adjusted;
  • Fig. 1-2 is a view similar to Figs. 2 and 10 but with the parts in a different operative position after the adjustment of Fig. 11 has been made;
  • Fig. 13- is a view looking in the directionof the arrow 13 in Fig. 12.
  • the machine comprises a stationary workholding or bed frame B, carrying clamps 20 for holding the work W in which buttorrholesare to be formed, and a movable stitching frame S carrying thetstitching instrumentalities and buttonhol'e cutting devices together with mechanism for imparting the necessary movements to the stitching frame to position the stitches and for other purposes.
  • the stitching instrumentalities comprise needle .21 carried by the upper turret 25, and a conventional 'looper' (not shown'i carried-bythe lower turret 25".
  • the turrets 2'5 and it are eperated in the usual. manner by the turretoperat ing lever 3t and main cam C.
  • the main cam C is carried on the: stitching frame S and is provided with three grooves 21,- 22' and 23 of which the groove 5&2 on the under surface cooperates witl i a cam roll 35 to move the turret operating lever 34.
  • the groove 2 I cooperates with the 'fi x'ed roll 2'4 mounted on the' bed frame B to move the .s-titchingframe as required and to feed the stitching instrumentalities with respect to the work.
  • the groove 2-3 cooperates with acam roll 1- to provide the necessary lateral motion of the stitching frame S with respect-to-the work. This lateral. movement of the stitchin frame S is required' during the barringoi the buttonhole and in putting in the stitches at the eye end of the buttonhole.
  • the main cam C is driven by'a Worm 1511 (Fig. 2 engaging teeth on the edge of the cam and the worm is. given avariable step-by-step movement by a feed crank 48 and a one-way driving.
  • the turret-operating mechanism comprises the turret operating lever 34 pivoted at It to the stitching frame S, the link 83 connected toan arm 32 on the gear sector shaft" 3'1, thegear sectors 29, and the gears 28 which operate the-upper and lowerturrets '25 and 26.
  • the mechanism described thus far is-conveiitional; and provides-means for rotatingthe main cam step by'step, for feeding the stitchingdc vices lengthwise andlaterallyof the button hole and for rotating the turrets to stitch around the eye of the button hole.
  • the oscillating feed crank 48 is provided with a way 52 in which is slidably mounted a pivot block 41 carrying a pivot stud '53 (Fig. 3) which is received in the eye of link 46.
  • the outer end of the pin 53 passes through a hole in a link 63 which is also slotted as shown at 86 and the parts are held in position on the pin by a nut 54.
  • the slot 80 in the link 63 receives a pin 62 mounted on a swinging arm 68.
  • This arm is pivoted at 6
  • This turns the worm 50 through .a smaller angle and consequently turns the main cam C a smaller amount, shortening each step of the feed.
  • the movement of the swinging arm 69 as required is accomplished by the following mechanism.
  • the turret-operating lever 34 is provided with two ears 69 in which are screw-threaded studs 18.
  • the clamping nut 9 is loosened.
  • one of the studs 10 is unscrewed a little and the other is screwed in further, tilting the cam on the turretoperating lever.
  • the clamping nut 9 is tightened.
  • cam follower mounted on one arm of a bell crank 12 pivoted at 13 to the stitching frame S.
  • the other end of the bell crank carries a stud 14 which is movable in a slot 15 formed on one arm of a second bell crank 16.
  • This second bell crank is pivoted at 17 on the stitching frame S and its other arm is connected by a link 18 to a rod 19 which slides in guides 8 secured to the stitching frame S.
  • the rear end of the rod 19 is connected by a pivot 8
  • the stitch feed varying cam 66 moves the cam follower II from the position shown in Fig. 2 through the position shown in Fig. 12 to the position shown in Fig. 10. This moves the bell cranks I2 and 76, as shown in Fig. 10, and pulls the swinging arm 60 to the left, as shown in Fig. 1, thereby increasing the effective length of the crank 48 so that more stitches will be put in on the succeeding side of the buttonhole.
  • the cam groove 61 in the stitch feed varying cam 66 on the turret-operating lever 34 is given its peculiar shape for the following reasons:
  • an eye-feed adjusting handle pivoted at 81, and provided with a latch 88 moving about a pivot 89 and normally held in latched position by a spring 96.
  • the latch carries a pin 9
  • a stop piece I66 adjustabl held to the quadrant by a bolt
  • another adjustable stop piece I82 At the left hand end of the quadrant there is another adjustable stop piece I82.
  • Each stop piece has a hole I03 in it to receive the pin 9
  • the stop pieces I00 and I02 are adjustable along the quadrant 93 as required in sewing eyes of diiferent sizes.
  • the upper end of the eye-feed adjusting handle 86 which extends beyond the pivot 87 is connected to a rod 94, the
  • Figs. 1 and 2 the parts are shown in the position which they occupy when a buttonhole having an eye such as is shown in Fig. 8 is to be sewn.
  • the eye-feed adjusting handle 86 is at the extreme right and the stop 96 is in its extreme left hand position and, therefore, limits the movement of the swinging arm 66 to the right.
  • the eye-feed adjusting handle 86 is placed in the position shown in Fig. 11 and the stop 96 is moved to the right.
  • the stop 96 is in the right hand position shown in Fig. 11 the block 41 is pulled to the right as shown in Fig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US659588A 1946-04-04 1946-04-04 Buttonhole sewing machine Expired - Lifetime US2477941A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US659588A US2477941A (en) 1946-04-04 1946-04-04 Buttonhole sewing machine
GB15273/49A GB659655A (en) 1946-04-04 1949-06-08 Improvements in or relating to buttonhole sewing machines
DEJ93D DE851888C (de) 1946-04-04 1949-10-29 Mechanismus fuer eine Knopflochnaehmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US659588A US2477941A (en) 1946-04-04 1946-04-04 Buttonhole sewing machine
GB15273/49A GB659655A (en) 1946-04-04 1949-06-08 Improvements in or relating to buttonhole sewing machines

Publications (1)

Publication Number Publication Date
US2477941A true US2477941A (en) 1949-08-02

Family

ID=41572619

Family Applications (1)

Application Number Title Priority Date Filing Date
US659588A Expired - Lifetime US2477941A (en) 1946-04-04 1946-04-04 Buttonhole sewing machine

Country Status (2)

Country Link
US (1) US2477941A (de)
DE (1) DE851888C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183309A (en) * 1977-12-30 1980-01-15 Elitex, Koncern Textilniho Strojirenstvi Buttonhole sewing machine for sewing eye or straight buttonholes with or without a wedge bar tack

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546872C2 (de) * 1984-09-14 1996-10-02 Suzuki Mfg Knopflochnähmaschine
DE3533022C2 (de) * 1984-09-14 1996-09-19 Suzuki Mfg Knopflochnähmaschine
JP2734769B2 (ja) * 1990-10-08 1998-04-02 ブラザー工業株式会社 穴かがりミシン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183309A (en) * 1977-12-30 1980-01-15 Elitex, Koncern Textilniho Strojirenstvi Buttonhole sewing machine for sewing eye or straight buttonholes with or without a wedge bar tack

Also Published As

Publication number Publication date
DE851888C (de) 1952-10-09

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