GB1297384A - - Google Patents
Info
- Publication number
- GB1297384A GB1297384A GB1297384DA GB1297384A GB 1297384 A GB1297384 A GB 1297384A GB 1297384D A GB1297384D A GB 1297384DA GB 1297384 A GB1297384 A GB 1297384A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bore
- water
- pressure
- aperture
- switch
- 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
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
1297384 Pressure casting machines JOSEPH LUCAS (INDUSTRIES) Ltd 2 April 1970 [13 May 1969] 24237/69 Heading B3F [Also in Division F1] In an automatic die-casting machine having a water cooled injection plunger 12, the operation of the machine is automatically stopped when the pressure of water in the injection plunger falls below a pre-set value. Water emanating from the plunger 12 is conveyed along a conduit 14 to a switching device 21 (see Fig. 3). The stream of water enters the switch 21 through a pipe 15 and obstructs an aperture 24 at the end of a bore 23. Low pressure air fed in through the bore 23 leaves the switch through a bore 25. If the water pressure falls the aperture 24 becomes unobstructed and air does not enter the bore 25. The low-pressure output from bore 25 controls the flow of high pressure air in a circuit 26, 27, 28. A transducer 27 produces an electrical signal, which allows the operation of the casting machine to continue, when the high pressure air flows through it.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2423769 | 1969-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1297384A true GB1297384A (en) | 1972-11-22 |
Family
ID=10208586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1297384D Expired GB1297384A (en) | 1969-05-13 | 1969-05-13 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1297384A (en) |
-
1969
- 1969-05-13 GB GB1297384D patent/GB1297384A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |