GB225512A - Improvements in mechanical pencils - Google Patents
Improvements in mechanical pencilsInfo
- Publication number
- GB225512A GB225512A GB19052/24A GB1905224A GB225512A GB 225512 A GB225512 A GB 225512A GB 19052/24 A GB19052/24 A GB 19052/24A GB 1905224 A GB1905224 A GB 1905224A GB 225512 A GB225512 A GB 225512A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- lead
- refill
- wahl
- screw
- 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
- B43K21/00—Propelling pencils
- B43K21/003—Propelling pencils with lead sections or lead cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
225,512. Wahl Co., (Assignees of Wahl, J. C.). Nov. 26, 1923, [Convention date]. Pencil holders. - Relates to the reserve lead or refill chamber of mechanical pencils of the kind wherein the chamber is within a portion of the lead feeding mechanism, and consists in means to enable leads which are of greater length than the outlet aperture to be withdrawn from or inserted into the chamber by varying the length of the chamber. In the example shown in Figs. 1 and 4, the refill chamber is at the end of a tubular portion 8 carrying the screw - threaded follower of the screw-propelling mechanism. The upper end 11 of the tube is externally threaded to receive a cap member 12 containing an eraser which rests upon a disc 14 and closes the upper end of the refill chamber. The outlet aperture 10 of the refill chamber is conical, with its bottom and wider end extending to a short distance from the bottom disc 13 of the chamber. To withdraw a lead the cap 12 is unscrewed about four turns as shown in Fig. 4 until the end of the lead drops out of the aperture. Specification 222,450 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US676876A US1578565A (en) | 1923-11-26 | 1923-11-26 | Mechanical pencil |
Publications (1)
Publication Number | Publication Date |
---|---|
GB225512A true GB225512A (en) | 1925-02-26 |
Family
ID=24716401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19052/24A Expired GB225512A (en) | 1923-11-26 | 1924-08-11 | Improvements in mechanical pencils |
Country Status (3)
Country | Link |
---|---|
US (1) | US1578565A (en) |
DE (1) | DE432960C (en) |
GB (1) | GB225512A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD728025S1 (en) | 2013-06-21 | 2015-04-28 | F.I.L.A.—Fabbrica Italiana Lapis Ed Affini S.p.A. | Marker |
USD752146S1 (en) | 2015-01-14 | 2016-03-22 | F. I. L. A.—Fabbrica Italiana Lapis Ed Affini S.P.A. | Marker |
JP1659747S (en) * | 2019-08-22 | 2020-05-18 |
-
1923
- 1923-11-26 US US676876A patent/US1578565A/en not_active Expired - Lifetime
-
1924
- 1924-08-03 DE DEW70935D patent/DE432960C/en not_active Expired
- 1924-08-11 GB GB19052/24A patent/GB225512A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE432960C (en) | 1926-08-20 |
US1578565A (en) | 1926-03-30 |
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