FR2381444A7 - Lathe chuck key safety device - has key constructed to tilt and fall out if released - Google Patents
Lathe chuck key safety device - has key constructed to tilt and fall out if releasedInfo
- Publication number
- FR2381444A7 FR2381444A7 FR7705165A FR7705165A FR2381444A7 FR 2381444 A7 FR2381444 A7 FR 2381444A7 FR 7705165 A FR7705165 A FR 7705165A FR 7705165 A FR7705165 A FR 7705165A FR 2381444 A7 FR2381444 A7 FR 2381444A7
- Authority
- FR
- France
- Prior art keywords
- key
- tilt
- safety device
- fall out
- released
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B33/00—Hand tools not covered by any other group in this subclass
- B25B33/005—Chuck keys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The safety device prevents a lathe chuck key being left in position when the lathe is started up, causing it to tilt and fall out it forgotten. The key can be so designed that it cannot remain in position in the chuck if pressure on the thin end of the tommy bar ceases, the imbalance being produced by difference in the weights of the bar ends. Tilting can be arranged to cause a cam to thrust against a ring sliding on the square drive end and in turn bearing against the chuck. This drives the drive end out of the socket so that the key falls free.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7705165A FR2381444A7 (en) | 1977-02-16 | 1977-02-16 | Lathe chuck key safety device - has key constructed to tilt and fall out if released |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7705165A FR2381444A7 (en) | 1977-02-16 | 1977-02-16 | Lathe chuck key safety device - has key constructed to tilt and fall out if released |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2381444A7 true FR2381444A7 (en) | 1978-09-15 |
Family
ID=9187082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7705165A Expired FR2381444A7 (en) | 1977-02-16 | 1977-02-16 | Lathe chuck key safety device - has key constructed to tilt and fall out if released |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2381444A7 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4395171A (en) * | 1980-02-08 | 1983-07-26 | Roehm Guenter H | Chuck key |
-
1977
- 1977-02-16 FR FR7705165A patent/FR2381444A7/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4395171A (en) * | 1980-02-08 | 1983-07-26 | Roehm Guenter H | Chuck key |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |