US1346120A - Sewing-machine - Google Patents

Sewing-machine Download PDF

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Publication number
US1346120A
US1346120A US212608A US21260818A US1346120A US 1346120 A US1346120 A US 1346120A US 212608 A US212608 A US 212608A US 21260818 A US21260818 A US 21260818A US 1346120 A US1346120 A US 1346120A
Authority
US
United States
Prior art keywords
stop
face
abutment
movement
operative
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
US212608A
Other languages
English (en)
Inventor
Francis Charles Edward
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.)
Vickers Ltd
Original Assignee
Vickers 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 Vickers Ltd filed Critical Vickers Ltd
Application granted granted Critical
Publication of US1346120A publication Critical patent/US1346120A/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
    • D05B27/00—Work-feeding means
    • D05B27/22—Work-feeding means with means for setting length of stitch
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/005—Doors or covers for accessing inner parts of the machine; Security devices therefor

Definitions

  • the usual stitch regulating mechanism comprises a forked rod or member which is reciprocated laterally by an eccentric or cam working in the fork and which is also capable of longitudinal or vertical reciproca' tion.
  • This member has pivoted to it a link which at its other end is pivoted to the end of a lever (hereinafter referred to as the control lever) which is fulcrumed on a fixed axis.
  • the longitudinal or vertical reciprocation of the forked member is obtained by the lateral movement causing the link to turn in an are on its axis on the said lever the restraint or control in movement thus provided causing the said member to reciprocate longitudinally or vertically more or less.
  • the said stop has a helical groove in which engages a member projecting from the bearing for the stop so that when the stop is rotated axial movement is imparted to'it.
  • This arrangement is in distinction to the stop being provided with a screw thread engaging with a screw thread in the stop bearing and has advantages over such an arrangement.
  • the helical groove aforesaid may be of definite limits corresponding to the desired length of travel of the stop whereby the parts may be assembled without the need of any initial axial adjustment of the stop in its bearing or adjustment relatively to an index as is necessary when the stop is engaged in its hearing by ordinary screw threads which are of indefinite length, that is, of a length having no limitation relatively to the desired limits of travel j of the stop.
  • the control lever e When the stop is in its outermost position the control lever e may be turned to the maximum extent on one or other side of the neutral, that is, until the operative extremity of the abutment face on one or other side of the neutral part bears against the stop 9, thus permitting the highest rate of feed in one or other direction.
  • the neutral part of the abutment face f is nearer to the axis on which the control lever e turns than the other operative parts of the said face the whole of the said face is on the outer side of an imaginary straight line, drawn between those operative parts of the abutment face most distant from the axis of the control lever, in other words the said abutment face is convex or outwardly angled.
  • the outer face of the boss 9 is shaped hel cally at a pitch equal to that of the helical groove and in the same direction so that the pointer may be close to the numerals on the face of the boss whatever he the position of the stop.
  • Fig. 7 illustrates the embodiment of the invention in which the reciprocatory member is caused to reciprocate vertically by the embodiment of a pivoted slotted or grooved block as hereinbefore explained.
  • the slotted or grooved block which is pivoted at m on a pin secured in the bracket arm, and n is a roller carried by the member a and engaging in the said block.
  • Stitch regulating and reversing mechanism comprising an axially. adjustable stop and an abutment member, the said stop having a helical groove in which engages the inner end of a screw that acts both as a guide to cause axial movement of thestop when rotated and as a fixing for the stop when adjusted.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US212608A 1917-10-29 1918-01-19 Sewing-machine Expired - Lifetime US1346120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15748/17A GB122663A (en) 1917-10-29 1917-10-29 Improvements in or relating to Sewing Machines.

Publications (1)

Publication Number Publication Date
US1346120A true US1346120A (en) 1920-07-13

Family

ID=33462958

Family Applications (1)

Application Number Title Priority Date Filing Date
US212608A Expired - Lifetime US1346120A (en) 1917-10-29 1918-01-19 Sewing-machine

Country Status (4)

Country Link
US (1) US1346120A (fr)
DE (1) DE346338C (fr)
FR (1) FR496578A (fr)
GB (1) GB122663A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523586A (en) * 1945-03-23 1950-09-26 Revco Products Sewing machine attachment
US2538565A (en) * 1939-08-12 1951-01-16 American Mach & Foundry Automatic stitch length adjusting mechanism
US2562009A (en) * 1948-03-26 1951-07-24 Revco Products Reverse stitch attachment for sewing machines
US2685266A (en) * 1951-12-14 1954-08-03 Vittorio Necchi S P A Stitch control lever limiting device
US3131658A (en) * 1959-11-17 1964-05-05 Prince Jidosha Kogyo Kabushiki Device for uniform regulation of forward and reverse stitches in automatic button hole stitching by means of a zigzag sewing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538565A (en) * 1939-08-12 1951-01-16 American Mach & Foundry Automatic stitch length adjusting mechanism
US2523586A (en) * 1945-03-23 1950-09-26 Revco Products Sewing machine attachment
US2562009A (en) * 1948-03-26 1951-07-24 Revco Products Reverse stitch attachment for sewing machines
US2685266A (en) * 1951-12-14 1954-08-03 Vittorio Necchi S P A Stitch control lever limiting device
US3131658A (en) * 1959-11-17 1964-05-05 Prince Jidosha Kogyo Kabushiki Device for uniform regulation of forward and reverse stitches in automatic button hole stitching by means of a zigzag sewing machine

Also Published As

Publication number Publication date
GB122663A (en) 1919-01-29
DE346338C (de) 1921-12-30
FR496578A (fr) 1919-11-11

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