GB991598A - Improvements in or relating to machine guards - Google Patents
Improvements in or relating to machine guardsInfo
- Publication number
- GB991598A GB991598A GB2176860A GB2176860A GB991598A GB 991598 A GB991598 A GB 991598A GB 2176860 A GB2176860 A GB 2176860A GB 2176860 A GB2176860 A GB 2176860A GB 991598 A GB991598 A GB 991598A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- guard
- switches
- machine
- operate
- 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)
- Earth Drilling (AREA)
Abstract
991,598. Machinery guards. W. J. BROWN. Sept. 14, 1961 [June 21, 1960], No. 21768/60. Heading F2J. A guard for a machine tool is arranged, in its fully lowered position, to operate a number of switches 107 simultaneously, the switches being arranged along the width of the guard and connected in parallel to an overriding relay 103. If the guard is correctly lowered, relay 103 is de-energized, and after a short delay relay 114 operates and in turn energizes relay 115. Operation of pedal 102 to close switch 116 then energizes a clutch coil 117 to operate the machine. If the guard is obstructed one or more of switches 107 will be changed over before the rest and relay 114 operates before 103 releases so that the circuit of clutch coil 117 is opened and operation of the machine is prevented. The work table is mounted on a parallel linkage operable by a screw and nut mechanism to adjust the height of the table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2176860A GB991598A (en) | 1960-06-21 | 1960-06-21 | Improvements in or relating to machine guards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2176860A GB991598A (en) | 1960-06-21 | 1960-06-21 | Improvements in or relating to machine guards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB991598A true GB991598A (en) | 1965-05-12 |
Family
ID=10168458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2176860A Expired GB991598A (en) | 1960-06-21 | 1960-06-21 | Improvements in or relating to machine guards |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB991598A (en) |
-
1960
- 1960-06-21 GB GB2176860A patent/GB991598A/en not_active Expired
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