US1923827A - Method of forming sinkers for knitting machines - Google Patents
Method of forming sinkers for knitting machines Download PDFInfo
- Publication number
- US1923827A US1923827A US639348A US63934832A US1923827A US 1923827 A US1923827 A US 1923827A US 639348 A US639348 A US 639348A US 63934832 A US63934832 A US 63934832A US 1923827 A US1923827 A US 1923827A
- Authority
- US
- United States
- Prior art keywords
- strip
- sinkers
- thickness
- knitting machines
- reduced
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/04—Strips of repeated articles - cut up later
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
Definitions
- This invention relates to a method of manufacturing sinkers for knitting machines and it is an object of this invention to provide a method of forming sinkers which will produce sinkers properly formed and tempered and which will not necessitate the straightening of the sinkers after tempering. It is also an object of this invention to provide a method of forming sinkers from continuous metal strips.
- FIG. 1 is a plan view of the metal strip used
- Fig. 2 is a plan view of the strip of Fig. 1 after the first operation of reducing its thickness at intervals and punching index openings therein;
- Fig. 3 is an edge view of the strip shown in Fig. 2;
- Fig. 4 is a plan view of strip of Fig. 2 after the sinkers have been punched therefrom;
- Figs. 5 and 6 are plan and edge views, respectively, of a sinker punched from the strip of Fi 4.
- the sinkers are formed from a strip 1 of steel of suitable composition which, for convenience in handling, is rolled into coils of suitable length and weight.
- the strip is first annealed so as to make it of substantially uniform softness throughout.
- the annealed strip is then passed through one or more sets of rolls which reduce the thickness of the strip at uniform intervals providing areas 2 of reduced thickness and forming a strip having areas 3 of normal thickness alternating with the areas 2 of reduced thickness.
- the index openings 4 are punched in the strip to serve as means for correctly positioning the portions of reduced and normal thickness for a sub-.
- the strip is then subjected to a hardening and tempering treatment, the furnace and cooling apparatus used being of types permitting of the continuous passage of the strip therethrough, and the strip, during this operation, is kept under sufficient tension to hold the strip flap and prevent warping or distortion thereof.
- the strip may be polished and the sinkers are then punched from the tempered strip, the index openings 4 serving to accurately position the portions of the strip of reduced and normal thickness with respect to the dies which punch the sinkers therefrom.
- the sinkers 6 shown in Figs. 5 and 6 which illustrate but one design of sinker to which this invention is applicable have the yarn engaging portion formed from a portion of the strip of reduced thickness while the remainder of the sinker is formed from a portion of the strip of normal thickness.
- sinkers Upon punching, the sinkers are completed except for rumbling and inspection. Sinkers made as above described being punched from a hardened fiat strip are free from distortion and the slow and costly straightening operation necessary to correct distortion when sinkers are tempered after punching is unnecessary, and loss due to rejections because of distortion is avoided. Further, tempering the sinkers in the strip permits of maintaining the temper of the sinkers more uniform than when the sinkers are tempered after being punched from the strip.
- I claim- 1 In the manufacture of sinkers for knitting machines the steps of reducing the thickness of an annealed strip at regular intervals and punching an index hole adjacent each reduced portion, tempering the strip while holding the strip under tension and punching sinkers from sections of the strip comprising a portion of reduced thickness and an adjacent portion of regular thickness.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knitting Machines (AREA)
Description
Aug. 22, 1933. L. B. HOLT 1,923,827
METHOD OF FORMING SINKERS FOR KNITTING MACHINES Fild Oct. 24. 1932 INVENTOR LAURENCE B. HOLT BY HIS ATTORNEYS MMM Patented Aug. 22, 1933 UNITED STATES PATENT; OFFICIE METHOD OF FORMING SINKERS FOR KNITTING MACHINES Application October 24, 1932. Serial No. 639,348
5 Claims.
This invention relates to a method of manufacturing sinkers for knitting machines and it is an object of this invention to provide a method of forming sinkers which will produce sinkers properly formed and tempered and which will not necessitate the straightening of the sinkers after tempering. It is also an object of this invention to provide a method of forming sinkers from continuous metal strips.
In the drawing- Fig. 1 is a plan view of the metal strip used;
Fig. 2 is a plan view of the strip of Fig. 1 after the first operation of reducing its thickness at intervals and punching index openings therein;
Fig. 3 is an edge view of the strip shown in Fig. 2;
Fig. 4 is a plan view of strip of Fig. 2 after the sinkers have been punched therefrom; and
Figs. 5 and 6 are plan and edge views, respectively, of a sinker punched from the strip of Fi 4.
In the manufacture of sinkers in accordance with this invention, the sinkers are formed from a strip 1 of steel of suitable composition which, for convenience in handling, is rolled into coils of suitable length and weight. The strip is first annealed so as to make it of substantially uniform softness throughout. The annealed strip is then passed through one or more sets of rolls which reduce the thickness of the strip at uniform intervals providing areas 2 of reduced thickness and forming a strip having areas 3 of normal thickness alternating with the areas 2 of reduced thickness. During the same passages through the rolls the index openings 4 are punched in the strip to serve as means for correctly positioning the portions of reduced and normal thickness for a sub-.
sequent operation.
The strip is then subjected to a hardening and tempering treatment, the furnace and cooling apparatus used being of types permitting of the continuous passage of the strip therethrough, and the strip, during this operation, is kept under sufficient tension to hold the strip flap and prevent warping or distortion thereof. After tempering, the strip may be polished and the sinkers are then punched from the tempered strip, the index openings 4 serving to accurately position the portions of the strip of reduced and normal thickness with respect to the dies which punch the sinkers therefrom. The sinkers 6 shown in Figs. 5 and 6 which illustrate but one design of sinker to which this invention is applicable have the yarn engaging portion formed from a portion of the strip of reduced thickness while the remainder of the sinker is formed from a portion of the strip of normal thickness.
Upon punching, the sinkers are completed except for rumbling and inspection. Sinkers made as above described being punched from a hardened fiat strip are free from distortion and the slow and costly straightening operation necessary to correct distortion when sinkers are tempered after punching is unnecessary, and loss due to rejections because of distortion is avoided. Further, tempering the sinkers in the strip permits of maintaining the temper of the sinkers more uniform than when the sinkers are tempered after being punched from the strip.
I claim- 1. In the manufacture of sinkers for knitting machines the steps of reducing the thickness of an annealed strip at regular intervals and punching an index hole adjacent each reduced portion, tempering the strip while holding the strip under tension and punching sinkers from sections of the strip comprising a portion of reduced thickness and an adjacent portion of regular thickness.
2. In the manufacture of sinkers for knitting machines, thesteps of reducing at intervals the thickness of an annealed metal strip, tempering the strip and punching the sinkers from sections of the strip comprising portions of reduced and normal thicknesses.
3. In the manufacture of sinkers for knitting machines, the steps of reducing at regular intervals the thickness of an annealed metal strip of uniform thickness, tempering the strip while held under tension and punching the sinkers from sections of the tempered strip comprising portions of reduced and normal thicknesses.
4. In the manufacture of sinkers for knitting machines, the steps of rolling an annealed strip to reduce its thickness at regular intervals, tempering the strip while under tension and punching the sinkers from sections of the hardened strip comprising portions of reduced and normal thicknesses.
5. In the manufacture of sinkers for knitting machines, the steps of rolling an annealed strip to reduce its thickness at regular intervals, tempering the strip in a continuous process while under tension and punching the sinkers from sections comprising portions of normal and reduced thicknesses.
LAURENCE B. HOLT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US639348A US1923827A (en) | 1932-10-24 | 1932-10-24 | Method of forming sinkers for knitting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US639348A US1923827A (en) | 1932-10-24 | 1932-10-24 | Method of forming sinkers for knitting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1923827A true US1923827A (en) | 1933-08-22 |
Family
ID=24563738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US639348A Expired - Lifetime US1923827A (en) | 1932-10-24 | 1932-10-24 | Method of forming sinkers for knitting machines |
Country Status (1)
Country | Link |
---|---|
US (1) | US1923827A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2766777A (en) * | 1952-01-25 | 1956-10-16 | Warner Swasey Co | Die cast shuttle guide |
US3122827A (en) * | 1960-08-04 | 1964-03-03 | Hughes Aircraft Co | Polycrystalline article and method for making same |
US3222910A (en) * | 1962-02-23 | 1965-12-14 | Wallace Expanding Machines | Method of forming metallic sheet members |
US6185805B1 (en) * | 1996-01-10 | 2001-02-13 | Cooper Automotive S.A. | Method of forming a windshield wiper |
-
1932
- 1932-10-24 US US639348A patent/US1923827A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2766777A (en) * | 1952-01-25 | 1956-10-16 | Warner Swasey Co | Die cast shuttle guide |
US3122827A (en) * | 1960-08-04 | 1964-03-03 | Hughes Aircraft Co | Polycrystalline article and method for making same |
US3222910A (en) * | 1962-02-23 | 1965-12-14 | Wallace Expanding Machines | Method of forming metallic sheet members |
US6185805B1 (en) * | 1996-01-10 | 2001-02-13 | Cooper Automotive S.A. | Method of forming a windshield wiper |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110000221B (en) | Method for improving linear warping defect of non-oriented silicon steel hot-rolled edge | |
JP6633025B2 (en) | Core plate manufacturing method | |
US2224997A (en) | Coiling means for metal bands for the purpose of heat treating the same | |
US1923827A (en) | Method of forming sinkers for knitting machines | |
DE112016004387T5 (en) | SEPARATORHERSTELLUNGSVERFAHREN | |
KR101589913B1 (en) | Heat treating method for advanced high strength steel hot coil and cold rolling method using the same | |
US2060400A (en) | Method of and apparatus for treating sheet metal | |
CN106319193B (en) | The very thin stainless steel band low temperature destressing heat treatment technique of precision cold-rolled | |
US11008637B2 (en) | Method of producing martensitic stainless steel strip | |
CN113020278B (en) | Method for prejudging cold rolling brittle failure occurrence of oriented silicon steel | |
JP3283513B2 (en) | Method for manufacturing ski edges | |
CZ67499A3 (en) | Process for producing difficult to form parts from light metal bands | |
SU612964A1 (en) | Method of manufacturing hot-rolled strip for deep drawing | |
US2169020A (en) | Process of making resistor elements | |
JP6596905B2 (en) | Manufacturing method of high carbon steel strip with excellent workability and heat treatment | |
SU835536A1 (en) | Method of producing sheets for offset printing | |
KR101591792B1 (en) | Heat treating method for advanced high strength steel hot coil and cold rolling method using the same | |
US2643438A (en) | Method of making plow bottom parts, particularly moldboards | |
JP2017144483A (en) | Cold Rolling Method | |
US1932307A (en) | Silicon steel and method of making the same | |
US1789968A (en) | Method of making splined gears | |
SU1142195A1 (en) | Method of manufacturing high-rigidity sections | |
GB512811A (en) | Method of and apparatus for use in the heat treatment of metal bands | |
US2103777A (en) | Ductilizing process | |
JPH0130893B2 (en) |