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 released

Info

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
Application number
FR7705165A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PINEDE HENRI
Original Assignee
PINEDE HENRI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PINEDE HENRI filed Critical PINEDE HENRI
Priority to FR7705165A priority Critical patent/FR2381444A7/en
Application granted granted Critical
Publication of FR2381444A7 publication Critical patent/FR2381444A7/en
Expired legal-status Critical Current

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.
FR7705165A 1977-02-16 1977-02-16 Lathe chuck key safety device - has key constructed to tilt and fall out if released Expired FR2381444A7 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395171A (en) * 1980-02-08 1983-07-26 Roehm Guenter H Chuck key

Cited By (1)

* Cited by examiner, † Cited by third party
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