GB589995A - Improvement in lock-stitch sewing machines - Google Patents
Improvement in lock-stitch sewing machinesInfo
- Publication number
- GB589995A GB589995A GB8646/45A GB864645A GB589995A GB 589995 A GB589995 A GB 589995A GB 8646/45 A GB8646/45 A GB 8646/45A GB 864645 A GB864645 A GB 864645A GB 589995 A GB589995 A GB 589995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feed
- bar
- needle
- shaft
- shafts
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
- D05B57/10—Shuttles
- D05B57/14—Shuttles with rotary hooks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
589,995. Sewing-machines. SINGER MANUFACTURING CO. April 7, 1945, No. 8646. Convention date, Jan. 1. Drawings to Specification. [Class 112] Lock-stitching by hooks; presser-bars; frames. -In order to improve high-speed stitching by reducing the pressure of the under-thread against the needle-hole in the throat-plate and thus its friction against the needlethread and the resistance to feed of the work, the needle-bar of a straight eyedneedle machine is inclined so that the descent of the needle has a forward component; the needlehole can thus be more nearly above the rear edge of the bobbin-case, from which the underthread emerges, while the needle still passes through the axis of the loop-taker. The presser bar is substantially parallel to the needle-bar. The whole standard and arm of the machine may be inclined, thus facilitating inspection of the work, or the inclination may be confined to the head or to the guides for the needle-bar and presser bar. Feed by dogs.-In order,to provide additional clearance near the loop-taker in the usual fourmotion feed mechanism comprising arms on two horizontal rock-shafts, the feed-lift rock-shaft carries a forked arm engaging a block on the feed-bar, instead of the usual arrangement in which the feed-bar is forked. The arm on the feed rock-shaft is arranged so that it never reaches the vertical position, the rear-end of the feed-dog being thus made to rise before the front end and to drop quickly near the end of the feeding movement. ' Upper and lower shafts, connecting; lubricating.-The two shafts are bevel-geared to a vertical shaft, the gearing giving a two-to-one ratio. The bevel gear on the lower shaft also engages a bevel gear on the shaft of a rotary oil-pump which supplies the bearings of the machine. Specification 452,001 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US570926A US2394511A (en) | 1945-01-01 | 1945-01-01 | Lock-stitch sewing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB589995A true GB589995A (en) | 1947-07-04 |
Family
ID=24281630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8646/45A Expired GB589995A (en) | 1945-01-01 | 1945-04-07 | Improvement in lock-stitch sewing machines |
Country Status (5)
Country | Link |
---|---|
US (1) | US2394511A (en) |
CH (1) | CH257088A (en) |
DE (1) | DE850376C (en) |
FR (1) | FR916360A (en) |
GB (1) | GB589995A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2680417A (en) * | 1951-06-29 | 1954-06-08 | Singer Mfg Co | Lockstitch sewing machine |
US3628480A (en) * | 1970-07-09 | 1971-12-21 | Singer Co | Loose stitch forming mechanism for lockstitch sewing machines |
JP2972965B2 (en) * | 1991-03-31 | 1999-11-08 | ブラザー工業 株式会社 | Full rotation of the sewing machine |
CN106835513A (en) * | 2017-03-24 | 2017-06-13 | 杰克缝纫机股份有限公司 | The material feeding driving mechanism and sewing machine of sewing machine |
CN108223825B (en) * | 2018-02-23 | 2019-03-15 | 孙艳芬 | Chemical pipeline plug valve |
-
1945
- 1945-01-01 US US570926A patent/US2394511A/en not_active Expired - Lifetime
- 1945-04-07 GB GB8646/45A patent/GB589995A/en not_active Expired
- 1945-05-25 CH CH257088D patent/CH257088A/en unknown
- 1945-10-23 FR FR916360D patent/FR916360A/en not_active Expired
-
1948
- 1948-11-20 DE DEP22126A patent/DE850376C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH257088A (en) | 1948-09-30 |
DE850376C (en) | 1952-09-25 |
FR916360A (en) | 1946-12-04 |
US2394511A (en) | 1946-02-05 |
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