GB1161306A - Improvements in or relating to Sewing Machines - Google Patents

Improvements in or relating to Sewing Machines

Info

Publication number
GB1161306A
GB1161306A GB25620/68A GB2562068A GB1161306A GB 1161306 A GB1161306 A GB 1161306A GB 25620/68 A GB25620/68 A GB 25620/68A GB 2562068 A GB2562068 A GB 2562068A GB 1161306 A GB1161306 A GB 1161306A
Authority
GB
United Kingdom
Prior art keywords
shaft
feed
shafts
wheels
coupled
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
Application number
GB25620/68A
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.)
GM Pfaff AG
Original Assignee
GM Pfaff AG
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 GM Pfaff AG filed Critical GM Pfaff AG
Publication of GB1161306A publication Critical patent/GB1161306A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/10—Edge guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

1,161,306. Sewing machines. G. M. PFAFF A.G. 29 May, 1968 [13 June, 1967], No. 25620/68. Heading D1G. A sewing machine adapted to vary the direction of work feed comprises two intermittently-driven feed members disposed below the work-supporting plate in parallel relationship to one another, the feed step values of said members being variable inversely to each other in a constant ratio relatively to a common median value. Needles 11, 12 co-operate with looptakers 20, 21 carried by vertical shafts 18, 19 coupled by gearing 16, 17 to a shaft 15 driven by a belt 14 from a main shaft (9). Cam means (23) on shaft (9) is coupled to a crank 25 on a hollow shaft 26 by a pitman 22 associated with conventional means (24) for varying the extent of oscillatory movement imparted to shaft 26. Housings 27, 28, rigid with shaft 26, slidably support crank members 29, 30 for movement perpendicular to the axis of shaft 26. A shaft 53, slidable in shaft 26, is formed within the housings 27, 28 with oppositely-directed helical teeth meshing with corresponding toothed racks formed on the crank members 29, 30. The latter are coupled by respective links 31, 32 to uni-directional clutches 33, 34 having driven shafts 35, 36 which are coupled by gearing 37, 38 to hollow shafts 39, 40 journailed on shafts 18, 19 respectively. Wheels 41, 42 on the shafts 39, 40 have friction flanges drivingly engaging feed wheels 43, 44 co-operating with respective presser wheels 47, 48. A lever 57, pivoted at 56 on the machine frame is formed with a boss 59 journalling a pin 58 rigid with shaft 53. Springs 61, 62 bias washers 63, 64, mounted on shaft 53, against boss 59 and normally against opposed sides of a fixed bar 60 for centering lever 57. Equal increments of rotation are then thereby imparted to the feed wheels 43, 44 for straight stitching. If lever 57 is moved either to one side or to the other, one of the crank members 29, 30 is lengthened and the other is correspondingly shortened for effecting curved stitching. It is stated that the feed wheels may be replaced by feed dogs, and that the feed may be automatically controlled.
GB25620/68A 1967-06-13 1968-05-29 Improvements in or relating to Sewing Machines Expired GB1161306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP0042345 1967-06-13

Publications (1)

Publication Number Publication Date
GB1161306A true GB1161306A (en) 1969-08-13

Family

ID=7378545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25620/68A Expired GB1161306A (en) 1967-06-13 1968-05-29 Improvements in or relating to Sewing Machines

Country Status (3)

Country Link
US (1) US3495558A (en)
DE (1) DE1660968C3 (en)
GB (1) GB1161306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30091E (en) * 1972-11-09 1979-09-04 The Shoe & Allied Research Assoc. Automatically guiding workpieces through a machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1043087B (en) * 1975-10-03 1980-02-20 Rockwell Rimoldi Spa SEWING MACHINE FOR THE FORMATION OF FABRIC SHAPED BELTS
IT1191514B (en) * 1986-01-22 1988-03-23 Necchi Spa LOWER WHEEL TRANSPORT IN COLUMN SEWING MACHINE
DE9011178U1 (en) * 1990-07-30 1990-10-04 Dürkopp Adler AG, 4800 Bielefeld Single-needle or multi-needle sewing machine with a fabric transport device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875716A (en) * 1955-07-27 1959-03-03 Singer Mfg Co Feed regulating mechanisms for sewing machines
CH348602A (en) * 1955-12-22 1960-08-31 Pfaff Ag G M Feed device on a sewing machine
US2979745A (en) * 1959-07-17 1961-04-18 United Shoe Machinery Corp Work feeding and guiding means
DE1279434B (en) * 1964-11-20 1968-10-03 Union Special Maschinenfab Differential material feed device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30091E (en) * 1972-11-09 1979-09-04 The Shoe & Allied Research Assoc. Automatically guiding workpieces through a machine

Also Published As

Publication number Publication date
DE1660968C3 (en) 1973-11-08
DE1660968A1 (en) 1971-07-15
US3495558A (en) 1970-02-17
DE1660968B2 (en) 1973-04-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees