GB915522A - Retractable point protector for writing instruments - Google Patents
Retractable point protector for writing instrumentsInfo
- Publication number
- GB915522A GB915522A GB4354459A GB4354459A GB915522A GB 915522 A GB915522 A GB 915522A GB 4354459 A GB4354459 A GB 4354459A GB 4354459 A GB4354459 A GB 4354459A GB 915522 A GB915522 A GB 915522A
- Authority
- GB
- United Kingdom
- Prior art keywords
- point
- sleeve
- writing
- ears
- barrel
- 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
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
- B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
915,522. Writing instruments. JOHMANN, F. T. Dec. 22, 1959 [Jan. 21, 1959], No. 43544/59. Class 146 (3). A writing instrument having a resilientlymounted writing point, has a point protector movable in relation to the barrel between positions in which it respectively shields and exposes the point, the point protector being actuated by pressing its outer end, which is adjacent to the writing point, and the writing point against a rigid surface. A shown, the instrument comprises a two-part barrel 10, 11, whose parts are connected by a threaded, tubular plug 12. Slidably mounted in the open front end of the barrel part 11 is a sleeve 21 having series of ears 23 extending radially therefrom in the space between two tubular latch members 16, 17 which are frictionally secured in the barrel. The members 16, 17 are formed with opposed cam surfaces of the shapes shown in Fig. 6. The writing unit includes a reservoir 25, a feed tube 27 which is slidable in the plug 12 and the sleeve 21, and a ball-point 28. A spring 29 biases the writing unit forwards. The sleeve 21 is biased forwards by a spring 30 which is weaker than the spring 29 and tends to hold the ears 23 in contact with the latch member 16. In Fig. 1, the ears 23 are shown in the position 1 of Fig. 6, i.e. in the bottom of deep recesses 18 in the member 16, so that the sleeve 21 encloses the ball-point 28. To expose the ball-point the user presses the writing end of the pen against a rigid surface, thus forcing the sleeve 21 and the writing unit back into the barrel against the bias of their respective springs and bringing the ears 23 into contact with the member 17 (positions 2, 3, Fig. 6). When the pen is raised from the surface the sleeve and unit are carried forwards by their springs and the ears 23 pass through position 4 to position 5 so that the front end of the sleeve 21 is spaced to the rear of the ball-point 28. The point is concealed by a repetition of this procedure, the ears 23 passing through positions 6, 7, 8, 9 to 1<SP>1</SP>. In a modification, the ears 23 may be mounted, on the barrel and the members 16, 17 on the sleeve 21. Specification 792,185 is referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US738084A US2905147A (en) | 1958-05-27 | 1958-05-27 | Protraction-retraction mechanism for writing instruments |
US78809859A | 1959-01-21 | 1959-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB915522A true GB915522A (en) | 1963-01-16 |
Family
ID=31981679
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3105858A Expired GB854118A (en) | 1958-05-27 | 1958-09-29 | Protraction-retraction mechanism for writing instruments |
GB1658159A Expired GB900299A (en) | 1958-05-27 | 1959-05-14 | Projection-retraction mechanism for writing instruments |
GB4354459A Expired GB915522A (en) | 1958-05-27 | 1959-12-22 | Retractable point protector for writing instruments |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3105858A Expired GB854118A (en) | 1958-05-27 | 1958-09-29 | Protraction-retraction mechanism for writing instruments |
GB1658159A Expired GB900299A (en) | 1958-05-27 | 1959-05-14 | Projection-retraction mechanism for writing instruments |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH363906A (en) |
FR (1) | FR1236208A (en) |
GB (3) | GB854118A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3223072A (en) * | 1963-07-23 | 1965-12-14 | Frank T Johmann | Switching device |
US4319106A (en) * | 1980-03-31 | 1982-03-09 | Armitage Ralph T | Push button switch |
US5043546A (en) * | 1990-07-16 | 1991-08-27 | Oslo Controls, Incorporated | Push-button switch |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1248508B (en) * | 1962-08-16 | 1967-08-24 | Helmut Bross Dipl Ing | Switching mechanism for ballpoint pen |
DE1248510B (en) * | 1964-12-19 | 1967-08-24 | Helmut Bross Dipl Ing | Ballpoint pen with a push mechanism for either pushing forward or lowering the mine |
-
1958
- 1958-09-29 GB GB3105858A patent/GB854118A/en not_active Expired
-
1959
- 1959-05-14 GB GB1658159A patent/GB900299A/en not_active Expired
- 1959-08-31 FR FR803947A patent/FR1236208A/en not_active Expired
- 1959-09-21 CH CH7848459A patent/CH363906A/en unknown
- 1959-12-22 GB GB4354459A patent/GB915522A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3223072A (en) * | 1963-07-23 | 1965-12-14 | Frank T Johmann | Switching device |
US4319106A (en) * | 1980-03-31 | 1982-03-09 | Armitage Ralph T | Push button switch |
US5043546A (en) * | 1990-07-16 | 1991-08-27 | Oslo Controls, Incorporated | Push-button switch |
Also Published As
Publication number | Publication date |
---|---|
CH363906A (en) | 1962-08-15 |
GB854118A (en) | 1960-11-16 |
GB900299A (en) | 1962-07-04 |
FR1236208A (en) | 1960-07-15 |
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