FR2400437A1 - Lock for head of draughting machine - has rigidly held locking plate with detent notches spaced radially along circumference - Google Patents
Lock for head of draughting machine - has rigidly held locking plate with detent notches spaced radially along circumferenceInfo
- Publication number
- FR2400437A1 FR2400437A1 FR7824211A FR7824211A FR2400437A1 FR 2400437 A1 FR2400437 A1 FR 2400437A1 FR 7824211 A FR7824211 A FR 7824211A FR 7824211 A FR7824211 A FR 7824211A FR 2400437 A1 FR2400437 A1 FR 2400437A1
- Authority
- FR
- France
- Prior art keywords
- locking
- head
- lock
- locking plate
- spaced radially
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
- B43L13/08—Protractor heads
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Machine Tool Units (AREA)
- Sawing (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The drawing head of a draughting machine has a locking plate held rigid against turning on the drawing head, which has a number of locking notches offset against each other at pre-set angular distances along the outer edge of the plate. A spring tensioned locking lever has a swivel linkage, with the scale rulers mounted on a rotatable section and a centring projection in the form of the locking notches. Stops on either side of each locking notch(16) are located radially outside, with hard non-wearing surfaces against which an attachment of the centring projection of the locking lever hits before the centring projection makes soft contact with the fine locking notch.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2737556A DE2737556C3 (en) | 1977-08-19 | 1977-08-19 | Locking device for the drawing head of a drawing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2400437A1 true FR2400437A1 (en) | 1979-03-16 |
FR2400437B1 FR2400437B1 (en) | 1983-10-07 |
Family
ID=6016859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824211A Granted FR2400437A1 (en) | 1977-08-19 | 1978-08-18 | Lock for head of draughting machine - has rigidly held locking plate with detent notches spaced radially along circumference |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5442215A (en) |
DE (1) | DE2737556C3 (en) |
FR (1) | FR2400437A1 (en) |
IT (1) | IT1098109B (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR884222A (en) * | 1942-03-12 | 1943-08-06 | Improvements to drawing devices |
-
1977
- 1977-08-19 DE DE2737556A patent/DE2737556C3/en not_active Expired
-
1978
- 1978-08-18 JP JP10010678A patent/JPS5442215A/en active Pending
- 1978-08-18 IT IT26829/78A patent/IT1098109B/en active
- 1978-08-18 FR FR7824211A patent/FR2400437A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR884222A (en) * | 1942-03-12 | 1943-08-06 | Improvements to drawing devices |
Also Published As
Publication number | Publication date |
---|---|
DE2737556C3 (en) | 1980-03-06 |
DE2737556B2 (en) | 1979-06-21 |
FR2400437B1 (en) | 1983-10-07 |
IT7826829A0 (en) | 1978-08-18 |
JPS5442215A (en) | 1979-04-04 |
IT1098109B (en) | 1985-09-07 |
DE2737556A1 (en) | 1979-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |