GB625081A - Improvements in or relating to screw thread-cutting apparatus - Google Patents
Improvements in or relating to screw thread-cutting apparatusInfo
- Publication number
- GB625081A GB625081A GB1836/47A GB183647A GB625081A GB 625081 A GB625081 A GB 625081A GB 1836/47 A GB1836/47 A GB 1836/47A GB 183647 A GB183647 A GB 183647A GB 625081 A GB625081 A GB 625081A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- nut
- spindle
- head
- disc
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
625,081. Screwing. SOC. ANON. DES ACIERIES CI-DEVANT G. FISCHER. Jan. 20, 1947, No. 1836. Convention date, Jan. 25, 1946. [Class 83 (iii)] A screw thread cutting apparatus with rotatable die head, the spindle of which has mounted thereon a screwed sleeve guided by a nut, is characterised in that a ring-gear 4 is keyed to the die head spindle 3 so as to be rotatable therewith and to allow of axial displacement, pinions 19, 22, of different diameter meshing with the ring-gear so that the spindle 3 and ring-gear can be rotated manually either directly or from one of the pinion spindles. The nut 9 is secured in the axial direction by means of a pawl 12 pivoted on the casing 1, the pawl engaging a groove in the nut flange 10 to prevent the nut from rotating. In a modification, the die-head spindle comprises three portions secured together by means of T-shaped heads and recesses, the front portion carrying the die head, the rear portion the ring gear, and the intermediate portion the screwed sleeve with screwed-on nut, the latter being held in a clamp comprising two portions pivoted together so that when the clamp is released the intermediate portion of the spindle can be removed and replaced. Die-heads.-The cam surfaces 55 of a cam disc 54 engage grooves in radially-slidable die-head jaws 56, the socket 53 of the disc 54 having a slot 57 so that the disc can be adjusted circumferentially of the die-head, the disc being secured in the adjusted position by a screw 58.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH625081X | 1946-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625081A true GB625081A (en) | 1949-06-21 |
Family
ID=4524346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1836/47A Expired GB625081A (en) | 1946-01-25 | 1947-01-20 | Improvements in or relating to screw thread-cutting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB625081A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2716905A (en) * | 1950-10-05 | 1955-09-06 | Fischer Ag Georg | Selective speed reduction gearing |
-
1947
- 1947-01-20 GB GB1836/47A patent/GB625081A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2716905A (en) * | 1950-10-05 | 1955-09-06 | Fischer Ag Georg | Selective speed reduction gearing |
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