GB693450A - Improvements relating to presses for consolidating finely divided materials - Google Patents
Improvements relating to presses for consolidating finely divided materialsInfo
- Publication number
- GB693450A GB693450A GB2500650A GB2500650A GB693450A GB 693450 A GB693450 A GB 693450A GB 2500650 A GB2500650 A GB 2500650A GB 2500650 A GB2500650 A GB 2500650A GB 693450 A GB693450 A GB 693450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hooks
- rollers
- plunger
- mould
- article
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
693,450. Compression - moulding machines. CLARK, F. H., and LEES, C. A. Oct. 15, 1951 [Oct. 13, 1950], No. 25006/50. Addition to 669,835. Class 87 (ii). The parent Specification describes a press for consolidating finely-divided material in a mould the air being removed from the material by vacuum before it is consolidated by pressure. It has been found that when the mould is put under vacuum there is a tendency for the bottom die (the article-ejector) to be sucked upwards, and the present invention seeks to remedy this by holding the die down. The die is secured to the upper end of a vertical plunger a, and this plunger is held down, during the application of the vacuum, by two hooks r which engage rollers q mounted in lugs p secured to the plunger. The hooks are mounted on fixed pivots t and are pulled together by a spring (not shown) engaged in holes v in the hooks. When the consolidation has been effected and the moulded article is to be ejected, a manually-operated lever (not shown) engaging in a slot k in a sleeve j is raised, whereby chamfered edges x on the upper end of the sleeve engage rollers w on the hooks and cam them aside, the hooks being thus moved aside off the rollers q and a spring n urging the plunger a upwardly to eject the article. The retaining edges y of the hooks are struck from centres z displaced inwardly from the centres of the pivots t, so that as the hooks move inwardly they pull down on the rollers q to seal the bottom of the mould. An extension e of the plunger has a pin l which moves in a slot m in the fixed support s on which the hooks are pivoted. If the rollers q are to rise above the hooks, the upper ends of the hooks may have rollers by which the hooks may be moved apart by descent of rollers g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2500650A GB693450A (en) | 1950-10-13 | 1950-10-13 | Improvements relating to presses for consolidating finely divided materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2500650A GB693450A (en) | 1950-10-13 | 1950-10-13 | Improvements relating to presses for consolidating finely divided materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693450A true GB693450A (en) | 1953-07-01 |
Family
ID=10220701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2500650A Expired GB693450A (en) | 1950-10-13 | 1950-10-13 | Improvements relating to presses for consolidating finely divided materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB693450A (en) |
-
1950
- 1950-10-13 GB GB2500650A patent/GB693450A/en not_active Expired
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