GB407761A - Improvements in and relating to work-holding and positioning means for use in metal-cutting machine tools - Google Patents
Improvements in and relating to work-holding and positioning means for use in metal-cutting machine toolsInfo
- Publication number
- GB407761A GB407761A GB2946632A GB2946632A GB407761A GB 407761 A GB407761 A GB 407761A GB 2946632 A GB2946632 A GB 2946632A GB 2946632 A GB2946632 A GB 2946632A GB 407761 A GB407761 A GB 407761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jaw
- jaws
- needle
- shank
- needles
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G1/00—Making needles used for performing operations
- B21G1/12—Securing, cleaning-off burrs, reconditioning polishing, grinding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
407,761. Making needles &c. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) Oct. 21, 1932, No. 29466. [Classes 83 (ii) and 83 (iii).] Milling; blanks, transferring.-In a device for positioning round longitudinally grooved articles, such as sewing-machine needle blanks, so as to be presented correctly for a machining operation, the article is frictionally rotated and is arrested in a definite position by a yielding detector which engages the longitudinal groove. As applied to the machining of needles, such as milling near the eye or slabbing of the shank, the needles are fed one at a time along a groove 1<1> in the bed 1, point first, towards the holding jaws 4, 7. Both jaws are pivoted to the bed at 11, the jaw 4 having an extension 4<1> connected by a linkage 20, 18, 17, 7<1> to the jaw 7 so that the two jaws oscillate about the pivot 11 in opposite directions. A spring 10 acting on the extension 4<1> normally maintains the jaws closed. The jaw 7 is grooved at 21, Fig. 6, to receive the cylindrical shank of the needle and the jaw 4 has a semi-cylindrical recess 5 to receive the blade of the needle and a depression 22 for the end of the shank, the recesses 5, 22 being formed in an interchangeable block 2 attached to the jaw 4. The jaw 7 is also replaceable to suit different sized needles. A spring blade 8 attached to the jaw 7 projects up through a slot 9 in the jaw and into the recess 5 so that as a needle is fed axially between the jaws, its shank is rotated by a friction roller 6 until the end of the blade engages the longitudinal groove therein, thus positioning the needle for the machining operation. On completion of the machining operation, the jaws are released by a cam-actuated lever 14 having an adjustable screw 15 engaging a projection 13 on the jaw 7. Whilst the needle is being machined, its free end is held by a chuck, (not shown). The closed position of the jaws 4, 7 is determined by an adjustable stop contacting with a projection on the jaw 7. Specification 26096/11, [Class 83 (iv)], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2946632A GB407761A (en) | 1932-10-21 | 1932-10-21 | Improvements in and relating to work-holding and positioning means for use in metal-cutting machine tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2946632A GB407761A (en) | 1932-10-21 | 1932-10-21 | Improvements in and relating to work-holding and positioning means for use in metal-cutting machine tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB407761A true GB407761A (en) | 1934-03-29 |
Family
ID=10291988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2946632A Expired GB407761A (en) | 1932-10-21 | 1932-10-21 | Improvements in and relating to work-holding and positioning means for use in metal-cutting machine tools |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB407761A (en) |
-
1932
- 1932-10-21 GB GB2946632A patent/GB407761A/en not_active Expired
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