GB258779A - Improvements in and relating to presses for drawing sheet metal - Google Patents
Improvements in and relating to presses for drawing sheet metalInfo
- Publication number
- GB258779A GB258779A GB364026A GB364026A GB258779A GB 258779 A GB258779 A GB 258779A GB 364026 A GB364026 A GB 364026A GB 364026 A GB364026 A GB 364026A GB 258779 A GB258779 A GB 258779A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- work
- holder
- valve
- piston
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/04—Blank holders; Mounting means therefor
- B21D24/08—Pneumatically or hydraulically loaded blank holders
Abstract
258,779. Fitzpatrick, H. D., (Marquette Tool & Manufacturing Co.) Feb. 9, 1926. Cupping.-A work-holder for a cupping-press comprises a ring 14 supported by pillars 16 which rest on a plate 17 carried by a piston rod 22. A piston 21 secured to the rod, works in a cylinder 19 to which fluid-pressure may be admitted through pipes 25, 27. The pipe 25 is in communication with a pipe 26 connected to a threeway valve-box 28 in which is housed a valve 32 actuated by adjustable tappets 35. 36 on a rod 34 moving with the press-head. The upper part of the cylinder 19 is connected to the atmosphere at 31 during the operative stroke of the die 12, the pressure in the lower part of the cylinder meanwhile holding the blank 15. Towards the end of the downstroke, the actuation of the valve 32 places the two ends of the cylinder in communication, and owing to the difference in theeffective areas of the piston on the two sides, the work-holder is caused to rise more gradually than the upper die, this upward movement of the work-holder serving to strip the cupped blank from the lower die 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB364026A GB258779A (en) | 1926-02-09 | 1926-02-09 | Improvements in and relating to presses for drawing sheet metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB364026A GB258779A (en) | 1926-02-09 | 1926-02-09 | Improvements in and relating to presses for drawing sheet metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB258779A true GB258779A (en) | 1926-09-30 |
Family
ID=9762128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB364026A Expired GB258779A (en) | 1926-02-09 | 1926-02-09 | Improvements in and relating to presses for drawing sheet metal |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB258779A (en) |
-
1926
- 1926-02-09 GB GB364026A patent/GB258779A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1107331A (en) | Improvements in or relating to methods for the handling of preformed tyre blanks | |
| GB258779A (en) | Improvements in and relating to presses for drawing sheet metal | |
| GB223430A (en) | Improvements in or relating to multiple drawing presses | |
| US1550626A (en) | Power press | |
| GB256865A (en) | Improvements in and relating to blank-holders for presses for drawing sheet metal | |
| GB258790A (en) | Improvements in and relating to presses for drawing sheet metal | |
| GB300689A (en) | Improvements in presses for drawing sheet metal and the like | |
| GB287392A (en) | Improvements in presses for drawing sheet metal and the like | |
| GB300687A (en) | Improvements in presses for drawing sheet metal and the like | |
| GB261956A (en) | Improvements in blank holding means for presses for drawing sheet metal and the like | |
| GB277231A (en) | Improvements in and relating to presses for drawing sheet metal and the like | |
| US1638881A (en) | Drawing press | |
| GB261225A (en) | Improvements in and relating to presses for drawing sheet metal and the like | |
| GB357328A (en) | Improvements in or relating to presses for drawing sheet metal and the like | |
| SU640790A1 (en) | Die for finish punching-out of parts from sheet work | |
| GB332712A (en) | Improvements relating to the compression of moulding masses for the production of casting moulds and cores | |
| GB300688A (en) | Improvements in and relating to presses for working sheet metal and the like | |
| GB357182A (en) | A cushioning device for sheet metal drawing presses | |
| GB260146A (en) | Improvements in and relating to presses, for drawing sheet metal | |
| GB730286A (en) | Improvements relating to presses for drawing or bending metal blanks or sheets | |
| GB344714A (en) | Plate-holder for drawing presses having a movable draw-stamp | |
| GB260466A (en) | Improvements in and relating to presses for drawing sheet metal and the like | |
| GB371285A (en) | Improvements in and relating to horizontal hydraulic drawing presses | |
| GB382133A (en) | Improvements in metal stamping or drawing presses | |
| GB261590A (en) | Improvements in and relating to presses for working metal |