GB592334A - Improvements in means for interlocking hydraulic press rams and the press guards thereof - Google Patents
Improvements in means for interlocking hydraulic press rams and the press guards thereofInfo
- Publication number
- GB592334A GB592334A GB1269745A GB1269745A GB592334A GB 592334 A GB592334 A GB 592334A GB 1269745 A GB1269745 A GB 1269745A GB 1269745 A GB1269745 A GB 1269745A GB 592334 A GB592334 A GB 592334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- guard
- ram
- closed
- press
- 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
- 240000000800 Allium ursinum Species 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/02—Screens or other safety members moving in synchronism with members which move to and fro
- F16P3/04—Screens or other safety members moving in synchronism with members which move to and fro for machines with parts which approach one another during operation, e.g. for stamping presses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Presses (AREA)
Abstract
592,334. Machinery guards. TAYLOR, A. H. May 21, 1945, No. 12697. [Class 80 (iv)] [Also in Group XXIX] A safety device for a hydraulic press ram to prevent actuation should the press guard not be in its closed position comprises a valve 2 controlling the supply of pressure liquid from a passage 3 to an outlet 4 leading to the ram cylinder. On the lower end of the stem 6 of valve 2 is a piston member 9 working in chamber 26 to which the supply and exhaust of hydraulic fluid is controlled by an inlet valve 12 and an exhaust valve 14. These valves are actuated by a lever 23 under control of an electrical solenoid (not shown) which is energised by the making of an electrical contact when the guard is in its closed position. The lever 23 is then raised to close exhaust valve 14 and open valve 12 to a supply pipe 18 so that the hydraulic fluid is passed to chamber 26 to actuate piston 9 to open the valve 2. When the solenoid is de-energised by opening the guard the chamber 26 is exhausted and the valve 2 closed by the pressure above it. A return spring 7 for the piston 9 is made of sufficient strength to overcome any back pressure during the return stroke of the ram so that the valve 2 is closed to stop the return movement of the ram also if the guard is not closed.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB592334A true GB592334A (en) | 1947-09-15 |
Family
ID=1720850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1269745A Expired GB592334A (en) | 1945-05-21 | Improvements in means for interlocking hydraulic press rams and the press guards thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB592334A (en) |
-
1945
- 1945-05-21 GB GB1269745A patent/GB592334A/en not_active Expired
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