GB538766A - Improved safety guard for power presses and the like - Google Patents
Improved safety guard for power presses and the likeInfo
- Publication number
- GB538766A GB538766A GB279040A GB279040A GB538766A GB 538766 A GB538766 A GB 538766A GB 279040 A GB279040 A GB 279040A GB 279040 A GB279040 A GB 279040A GB 538766 A GB538766 A GB 538766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guard
- rod
- clutch
- cam
- crankshaft
- 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
-
- 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)
- Press Drives And Press Lines (AREA)
Abstract
538,766. Machinery guards. GRAINGER, J. A Feb. 14, 1940, No. 2790. [Class 80 (iv)] The guard of a press is power actuated ; the press cannot be started unless the guard is in the safe position and should the guard be obstructed the press cannot be started. The main shaft 4 has a flywheel 5, a gear wheel 6, a main clutch 7 and two cams 8, 9. The cam 8 is adapted to actuate a swinging guard 10 through a lever 11 and rod 13. Cam 9 is adapted to actuate a secondary clutch 14 on the crankshaft 15 through a rod 16, a member 17 pivoted to a lever 34, an arm 18 and rod 20. The main clutch 7 is actuated by a pedal 21 through a rod 22 and member 23. The crankshaft has a gear wheel 26 gearing with and having half the number of teeth of the wheel 6. Pivoted to member 17 is a rod 28 pivoted also to a guard frame 29 which carries the guard 10. During the first 90 degrees of revolution of shaft 4, the guard 10 is moved to closed or safe position ; during the next 180 degrees the cam 9 closes the clutch 14 and the crankshaft makes one revolution, the guard being held closed, and during the last 90 degrees the guard is opened. Should the guard, in approaching its closed position, be obstructed, e.g. by the operator's arm, the frame 29 is moved and the member 17 displaced from under the rod 16 so that the connection between the cam 9 and clutch 14 is broken and the crankshaft 15 remains at rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB279040A GB538766A (en) | 1940-02-14 | 1940-02-14 | Improved safety guard for power presses and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB279040A GB538766A (en) | 1940-02-14 | 1940-02-14 | Improved safety guard for power presses and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB538766A true GB538766A (en) | 1941-08-15 |
Family
ID=9745950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB279040A Expired GB538766A (en) | 1940-02-14 | 1940-02-14 | Improved safety guard for power presses and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB538766A (en) |
-
1940
- 1940-02-14 GB GB279040A patent/GB538766A/en not_active Expired
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